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'replace' : 'push');\n\t}\n\n\treturn routeTo(url);\n}\n\n/** Check if the given URL can be handled by any router instances. */\nfunction canRoute(url) {\n\tfor (var i = ROUTERS.length; i--;) {\n\t\tif (ROUTERS[i].canRoute(url)) {\n\t\t\treturn true;\n\t\t}\n\t}\n\treturn false;\n}\n\n/** Tell all router instances to handle the given URL.  */\nfunction routeTo(url) {\n\tvar didRoute = false;\n\tfor (var i = 0; i < ROUTERS.length; i++) {\n\t\tif (ROUTERS[i].routeTo(url) === true) {\n\t\t\tdidRoute = true;\n\t\t}\n\t}\n\tfor (var i$1 = subscribers.length; i$1--;) {\n\t\tsubscribers[i$1](url);\n\t}\n\treturn didRoute;\n}\n\nfunction routeFromLink(node) {\n\t// only valid elements\n\tif (!node || !node.getAttribute) {\n\t\treturn;\n\t}\n\n\tvar href = node.getAttribute('href'),\n\t    target = node.getAttribute('target');\n\n\t// ignore links with targets and non-path URLs\n\tif (!href || !href.match(/^\\//g) || target && !target.match(/^_?self$/i)) {\n\t\treturn;\n\t}\n\n\t// attempt to route, if no match simply cede control to browser\n\treturn route(href);\n}\n\nfunction handleLinkClick(e) {\n\tif (e.button == 0) {\n\t\trouteFromLink(e.currentTarget || e.target || this);\n\t\treturn prevent(e);\n\t}\n}\n\nfunction prevent(e) {\n\tif (e) {\n\t\tif (e.stopImmediatePropagation) {\n\t\t\te.stopImmediatePropagation();\n\t\t}\n\t\tif (e.stopPropagation) {\n\t\t\te.stopPropagation();\n\t\t}\n\t\te.preventDefault();\n\t}\n\treturn false;\n}\n\nfunction delegateLinkHandler(e) {\n\t// ignore events the browser takes care of already:\n\tif (e.ctrlKey || e.metaKey || e.altKey || e.shiftKey || e.button !== 0) {\n\t\treturn;\n\t}\n\n\tvar t = e.target;\n\tdo {\n\t\tif (String(t.nodeName).toUpperCase() === 'A' && t.getAttribute('href') && isPreactElement(t)) {\n\t\t\tif (t.hasAttribute('native')) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t\t// if link is handled by the router, prevent browser defaults\n\t\t\tif (routeFromLink(t)) {\n\t\t\t\treturn prevent(e);\n\t\t\t}\n\t\t}\n\t} while (t = t.parentNode);\n}\n\nvar eventListenersInitialized = false;\n\nfunction initEventListeners() {\n\tif (eventListenersInitialized) {\n\t\treturn;\n\t}\n\n\tif (typeof addEventListener === 'function') {\n\t\tif (!customHistory) {\n\t\t\taddEventListener('popstate', function () {\n\t\t\t\trouteTo(getCurrentUrl());\n\t\t\t});\n\t\t}\n\t\taddEventListener('click', delegateLinkHandler);\n\t}\n\teventListenersInitialized = true;\n}\n\nvar Router = function (Component$$1) {\n\tfunction Router(props) {\n\t\tComponent$$1.call(this, props);\n\t\tif (props.history) {\n\t\t\tcustomHistory = props.history;\n\t\t}\n\n\t\tthis.state = {\n\t\t\turl: props.url || getCurrentUrl()\n\t\t};\n\n\t\tinitEventListeners();\n\t}\n\n\tif (Component$$1) Router.__proto__ = Component$$1;\n\tRouter.prototype = Object.create(Component$$1 && Component$$1.prototype);\n\tRouter.prototype.constructor = Router;\n\n\tRouter.prototype.shouldComponentUpdate = function shouldComponentUpdate(props) {\n\t\tif (props.static !== true) {\n\t\t\treturn true;\n\t\t}\n\t\treturn props.url !== this.props.url || props.onChange !== this.props.onChange;\n\t};\n\n\t/** Check if the given URL can be matched against any children */\n\tRouter.prototype.canRoute = function canRoute(url) {\n\t\treturn this.getMatchingChildren(this.props.children, url, false).length > 0;\n\t};\n\n\t/** Re-render children with a new URL to match against. */\n\tRouter.prototype.routeTo = function routeTo(url) {\n\t\tthis._didRoute = false;\n\t\tthis.setState({ url: url });\n\n\t\t// if we're in the middle of an update, don't synchronously re-route.\n\t\tif (this.updating) {\n\t\t\treturn this.canRoute(url);\n\t\t}\n\n\t\tthis.forceUpdate();\n\t\treturn this._didRoute;\n\t};\n\n\tRouter.prototype.componentWillMount = function componentWillMount() {\n\t\tROUTERS.push(this);\n\t\tthis.updating = true;\n\t};\n\n\tRouter.prototype.componentDidMount = function componentDidMount() {\n\t\tvar this$1 = this;\n\n\t\tif (customHistory) {\n\t\t\tthis.unlisten = customHistory.listen(function (location) {\n\t\t\t\tthis$1.routeTo(\"\" + (location.pathname || '') + (location.search || ''));\n\t\t\t});\n\t\t}\n\t\tthis.updating = false;\n\t};\n\n\tRouter.prototype.componentWillUnmount = function componentWillUnmount() {\n\t\tif (typeof this.unlisten === 'function') {\n\t\t\tthis.unlisten();\n\t\t}\n\t\tROUTERS.splice(ROUTERS.indexOf(this), 1);\n\t};\n\n\tRouter.prototype.componentWillUpdate = function componentWillUpdate() {\n\t\tthis.updating = true;\n\t};\n\n\tRouter.prototype.componentDidUpdate = function componentDidUpdate() {\n\t\tthis.updating = false;\n\t};\n\n\tRouter.prototype.getMatchingChildren = function getMatchingChildren(children, url, invoke) {\n\t\treturn children.filter(prepareVNodeForRanking).sort(pathRankSort).map(function (vnode) {\n\t\t\tvar matches = exec(url, vnode.attributes.path, vnode.attributes);\n\t\t\tif (matches) {\n\t\t\t\tif (invoke !== false) {\n\t\t\t\t\tvar newProps = { url: url, matches: matches };\n\t\t\t\t\tassign(newProps, matches);\n\t\t\t\t\tdelete newProps.ref;\n\t\t\t\t\tdelete newProps.key;\n\t\t\t\t\treturn Object(__WEBPACK_IMPORTED_MODULE_0_preact__[\"cloneElement\"])(vnode, newProps);\n\t\t\t\t}\n\t\t\t\treturn vnode;\n\t\t\t}\n\t\t}).filter(Boolean);\n\t};\n\n\tRouter.prototype.render = function render(ref, ref$1) {\n\t\tvar children = ref.children;\n\t\tvar onChange = ref.onChange;\n\t\tvar url = ref$1.url;\n\n\t\tvar active = this.getMatchingChildren(children, url, true);\n\n\t\tvar current = active[0] || null;\n\t\tthis._didRoute = !!current;\n\n\t\tvar previous = this.previousUrl;\n\t\tif (url !== previous) {\n\t\t\tthis.previousUrl = url;\n\t\t\tif (typeof onChange === 'function') {\n\t\t\t\tonChange({\n\t\t\t\t\trouter: this,\n\t\t\t\t\turl: url,\n\t\t\t\t\tprevious: previous,\n\t\t\t\t\tactive: active,\n\t\t\t\t\tcurrent: current\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\n\t\treturn current;\n\t};\n\n\treturn Router;\n}(__WEBPACK_IMPORTED_MODULE_0_preact__[\"Component\"]);\n\nvar Link = function Link(props) {\n\treturn Object(__WEBPACK_IMPORTED_MODULE_0_preact__[\"h\"])('a', assign({ onClick: handleLinkClick }, props));\n};\n\nvar Route = function Route(props) {\n\treturn Object(__WEBPACK_IMPORTED_MODULE_0_preact__[\"h\"])(props.component, props);\n};\n\nRouter.subscribers = subscribers;\nRouter.getCurrentUrl = getCurrentUrl;\nRouter.route = route;\nRouter.Router = Router;\nRouter.Route = Route;\nRouter.Link = Link;\n\n/* harmony default export */ __webpack_exports__[\"default\"] = (Router);\n//# sourceMappingURL=preact-router.es.js.map\n\n/***/ }),\n\n/***/ \"/aYh\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar getPrototypeOf = __webpack_require__(\"UJE0\");\n\nfunction _superPropBase(object, property) {\n  while (!Object.prototype.hasOwnProperty.call(object, property)) {\n    object = getPrototypeOf(object);\n    if (object === null) break;\n  }\n\n  return object;\n}\n\nmodule.exports = _superPropBase;\n\n/***/ }),\n\n/***/ \"/sXU\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n/**\n * Copyright 2014-2015, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n */\n\n\n\n/**\n * Similar to invariant but only logs a warning if the condition is not met.\n * This can be used to log issues in development environments in critical\n * paths. Removing the logging code for production environments will keep the\n * same logic and follow the same code paths.\n */\n\nvar warning = function warning() {};\n\nif (false) {\n  warning = function warning(condition, format, args) {\n    var len = arguments.length;\n    args = new Array(len > 2 ? len - 2 : 0);\n    for (var key = 2; key < len; key++) {\n      args[key - 2] = arguments[key];\n    }\n    if (format === undefined) {\n      throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');\n    }\n\n    if (format.length < 10 || /^[s\\W]*$/.test(format)) {\n      throw new Error('The warning format should be able to uniquely identify this ' + 'warning. Please, use a more descriptive format than: ' + format);\n    }\n\n    if (!condition) {\n      var argIndex = 0;\n      var message = 'Warning: ' + format.replace(/%s/g, function () {\n        return args[argIndex++];\n      });\n      if (typeof console !== 'undefined') {\n        console.error(message);\n      }\n      try {\n        // This error was thrown as a convenience so that you can use this stack\n        // to find the callsite that caused this warning to fire.\n        throw new Error(message);\n      } catch (x) {}\n    }\n  };\n}\n\nmodule.exports = warning;\n\n/***/ }),\n\n/***/ \"0421\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar _typeof = __webpack_require__(\"b9XL\");\n\nvar assertThisInitialized = __webpack_require__(\"E7HD\");\n\nfunction _possibleConstructorReturn(self, call) {\n  if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) {\n    return call;\n  }\n\n  return assertThisInitialized(self);\n}\n\nmodule.exports = _possibleConstructorReturn;\n\n/***/ }),\n\n/***/ \"0fcM\":\n/***/ (function(module, exports) {\n\nfunction _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}\n\nmodule.exports = _classCallCheck;\n\n/***/ }),\n\n/***/ \"0x3/\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar dP = __webpack_require__(\"cb3v\");\nvar anObject = __webpack_require__(\"Aoj9\");\nvar getKeys = __webpack_require__(\"/CHd\");\n\nmodule.exports = __webpack_require__(\"Luod\") ? Object.defineProperties : function defineProperties(O, Properties) {\n  anObject(O);\n  var keys = getKeys(Properties);\n  var length = keys.length;\n  var i = 0;\n  var P;\n  while (length > i) {\n    dP.f(O, P = keys[i++], Properties[P]);\n  }return O;\n};\n\n/***/ }),\n\n/***/ \"12V7\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar $at = __webpack_require__(\"/1KO\")(true);\n\n// 21.1.3.27 String.prototype[@@iterator]()\n__webpack_require__(\"CiFW\")(String, 'String', function (iterated) {\n  this._t = String(iterated); // target\n  this._i = 0; // next index\n  // 21.1.5.2.1 %StringIteratorPrototype%.next()\n}, function () {\n  var O = this._t;\n  var index = this._i;\n  var point;\n  if (index >= O.length) return { value: undefined, done: true };\n  point = $at(O, index);\n  this._i += point.length;\n  return { value: point, done: false };\n});\n\n/***/ }),\n\n/***/ \"2gTp\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n\n\n/**\n * Use invariant() to assert state which your program assumes to be true.\n *\n * Provide sprintf-style format (only %s is supported) and arguments\n * to provide information about what broke and what you were\n * expecting.\n *\n * The invariant message will be stripped in production, but the invariant\n * will remain to ensure logic does not differ in production.\n */\n\nvar invariant = function invariant(condition, format, a, b, c, d, e, f) {\n  if (false) {\n    if (format === undefined) {\n      throw new Error('invariant requires an error message argument');\n    }\n  }\n\n  if (!condition) {\n    var error;\n    if (format === undefined) {\n      error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');\n    } else {\n      var args = [a, b, c, d, e, f];\n      var argIndex = 0;\n      error = new Error(format.replace(/%s/g, function () {\n        return args[argIndex++];\n      }));\n      error.name = 'Invariant Violation';\n    }\n\n    error.framesToPop = 1; // we don't care about invariant's own frame\n    throw error;\n  }\n};\n\nmodule.exports = invariant;\n\n/***/ }),\n\n/***/ \"2vmM\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\nObject.defineProperty(exports,'__esModule',{value:true});function _interopDefault(ex){return ex&&typeof ex==='object'&&'default'in ex?ex['default']:ex;}var firebase=_interopDefault(__webpack_require__(\"dP58\"));var tslib_1=__webpack_require__(\"7wws\");var util=__webpack_require__(\"58xA\");var logger$1=__webpack_require__(\"TUpU\");/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Wraps a DOM Storage object and:\r\n * - automatically encode objects as JSON strings before storing them to allow us to store arbitrary types.\r\n * - prefixes names with \"firebase:\" to avoid collisions with app data.\r\n *\r\n * We automatically (see storage.js) create two such wrappers, one for sessionStorage,\r\n * and one for localStorage.\r\n *\r\n * @constructor\r\n */var DOMStorageWrapper=/** @class */function(){/**\r\n     * @param {Storage} domStorage_ The underlying storage object (e.g. localStorage or sessionStorage)\r\n     */function DOMStorageWrapper(domStorage_){this.domStorage_=domStorage_;// Use a prefix to avoid collisions with other stuff saved by the app.\nthis.prefix_='firebase:';}/**\r\n     * @param {string} key The key to save the value under\r\n     * @param {?Object} value The value being stored, or null to remove the key.\r\n     */DOMStorageWrapper.prototype.set=function(key,value){if(value==null){this.domStorage_.removeItem(this.prefixedName_(key));}else{this.domStorage_.setItem(this.prefixedName_(key),util.stringify(value));}};/**\r\n     * @param {string} key\r\n     * @return {*} The value that was stored under this key, or null\r\n     */DOMStorageWrapper.prototype.get=function(key){var storedVal=this.domStorage_.getItem(this.prefixedName_(key));if(storedVal==null){return null;}else{return util.jsonEval(storedVal);}};/**\r\n     * @param {string} key\r\n     */DOMStorageWrapper.prototype.remove=function(key){this.domStorage_.removeItem(this.prefixedName_(key));};/**\r\n     * @param {string} name\r\n     * @return {string}\r\n     */DOMStorageWrapper.prototype.prefixedName_=function(name){return this.prefix_+name;};DOMStorageWrapper.prototype.toString=function(){return this.domStorage_.toString();};return DOMStorageWrapper;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * An in-memory storage implementation that matches the API of DOMStorageWrapper\r\n * (TODO: create interface for both to implement).\r\n *\r\n * @constructor\r\n */var MemoryStorage=/** @class */function(){function MemoryStorage(){this.cache_={};this.isInMemoryStorage=true;}MemoryStorage.prototype.set=function(key,value){if(value==null){delete this.cache_[key];}else{this.cache_[key]=value;}};MemoryStorage.prototype.get=function(key){if(util.contains(this.cache_,key)){return this.cache_[key];}return null;};MemoryStorage.prototype.remove=function(key){delete this.cache_[key];};return MemoryStorage;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Helper to create a DOMStorageWrapper or else fall back to MemoryStorage.\r\n * TODO: Once MemoryStorage and DOMStorageWrapper have a shared interface this method annotation should change\r\n * to reflect this type\r\n *\r\n * @param {string} domStorageName Name of the underlying storage object\r\n *   (e.g. 'localStorage' or 'sessionStorage').\r\n * @return {?} Turning off type information until a common interface is defined.\r\n */var createStoragefor=function createStoragefor(domStorageName){try{// NOTE: just accessing \"localStorage\" or \"window['localStorage']\" may throw a security exception,\n// so it must be inside the try/catch.\nif(typeof window!=='undefined'&&typeof window[domStorageName]!=='undefined'){// Need to test cache. Just because it's here doesn't mean it works\nvar domStorage=window[domStorageName];domStorage.setItem('firebase:sentinel','cache');domStorage.removeItem('firebase:sentinel');return new DOMStorageWrapper(domStorage);}}catch(e){}// Failed to create wrapper.  Just return in-memory storage.\n// TODO: log?\nreturn new MemoryStorage();};/** A storage object that lasts across sessions */var PersistentStorage=createStoragefor('localStorage');/** A storage object that only lasts one session */var SessionStorage=createStoragefor('sessionStorage');/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var logClient=new logger$1.Logger('@firebase/database');/**\r\n * Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).\r\n * @type {function(): number} Generated ID.\r\n */var LUIDGenerator=function(){var id=1;return function(){return id++;};}();/**\r\n * Sha1 hash of the input string\r\n * @param {!string} str The string to hash\r\n * @return {!string} The resulting hash\r\n */var sha1=function sha1(str){var utf8Bytes=util.stringToByteArray(str);var sha1=new util.Sha1();sha1.update(utf8Bytes);var sha1Bytes=sha1.digest();return util.base64.encodeByteArray(sha1Bytes);};/**\r\n * @param {...*} var_args\r\n * @return {string}\r\n * @private\r\n */var buildLogMessage_=function buildLogMessage_(){var var_args=[];for(var _i=0;_i<arguments.length;_i++){var_args[_i]=arguments[_i];}var message='';for(var i=0;i<var_args.length;i++){if(Array.isArray(var_args[i])||var_args[i]&&typeof var_args[i]==='object'&&typeof var_args[i].length==='number'){message+=buildLogMessage_.apply(null,var_args[i]);}else if(typeof var_args[i]==='object'){message+=util.stringify(var_args[i]);}else{message+=var_args[i];}message+=' ';}return message;};/**\r\n * Use this for all debug messages in Firebase.\r\n * @type {?function(string)}\r\n */var logger=null;/**\r\n * Flag to check for log availability on first log message\r\n * @type {boolean}\r\n * @private\r\n */var firstLog_=true;/**\r\n * The implementation of Firebase.enableLogging (defined here to break dependencies)\r\n * @param {boolean|?function(string)} logger_ A flag to turn on logging, or a custom logger\r\n * @param {boolean=} persistent Whether or not to persist logging settings across refreshes\r\n */var enableLogging=function enableLogging(logger_,persistent){util.assert(!persistent||logger_===true||logger_===false,\"Can't turn on custom loggers persistently.\");if(logger_===true){logClient.logLevel=logger$1.LogLevel.VERBOSE;logger=logClient.log.bind(logClient);if(persistent)SessionStorage.set('logging_enabled',true);}else if(typeof logger_==='function'){logger=logger_;}else{logger=null;SessionStorage.remove('logging_enabled');}};/**\r\n *\r\n * @param {...(string|Arguments)} var_args\r\n */var log=function log(){var var_args=[];for(var _i=0;_i<arguments.length;_i++){var_args[_i]=arguments[_i];}if(firstLog_===true){firstLog_=false;if(logger===null&&SessionStorage.get('logging_enabled')===true)enableLogging(true);}if(logger){var message=buildLogMessage_.apply(null,var_args);logger(message);}};/**\r\n * @param {!string} prefix\r\n * @return {function(...[*])}\r\n */var logWrapper=function logWrapper(prefix){return function(){var var_args=[];for(var _i=0;_i<arguments.length;_i++){var_args[_i]=arguments[_i];}log.apply(void 0,[prefix].concat(var_args));};};/**\r\n * @param {...string} var_args\r\n */var error=function error(){var var_args=[];for(var _i=0;_i<arguments.length;_i++){var_args[_i]=arguments[_i];}var message='FIREBASE INTERNAL ERROR: '+buildLogMessage_.apply(void 0,var_args);logClient.error(message);};/**\r\n * @param {...string} var_args\r\n */var fatal=function fatal(){var var_args=[];for(var _i=0;_i<arguments.length;_i++){var_args[_i]=arguments[_i];}var message=\"FIREBASE FATAL ERROR: \"+buildLogMessage_.apply(void 0,var_args);logClient.error(message);throw new Error(message);};/**\r\n * @param {...*} var_args\r\n */var warn=function warn(){var var_args=[];for(var _i=0;_i<arguments.length;_i++){var_args[_i]=arguments[_i];}var message='FIREBASE WARNING: '+buildLogMessage_.apply(void 0,var_args);logClient.warn(message);};/**\r\n * Logs a warning if the containing page uses https. Called when a call to new Firebase\r\n * does not use https.\r\n */var warnIfPageIsSecure=function warnIfPageIsSecure(){// Be very careful accessing browser globals. Who knows what may or may not exist.\nif(typeof window!=='undefined'&&window.location&&window.location.protocol&&window.location.protocol.indexOf('https:')!==-1){warn('Insecure Firebase access from a secure page. '+'Please use https in calls to new Firebase().');}};/**\r\n * Returns true if data is NaN, or +/- Infinity.\r\n * @param {*} data\r\n * @return {boolean}\r\n */var isInvalidJSONNumber=function isInvalidJSONNumber(data){return typeof data==='number'&&(data!=data||// NaN\ndata==Number.POSITIVE_INFINITY||data==Number.NEGATIVE_INFINITY);};/**\r\n * @param {function()} fn\r\n */var executeWhenDOMReady=function executeWhenDOMReady(fn){if(util.isNodeSdk()||document.readyState==='complete'){fn();}else{// Modeled after jQuery. Try DOMContentLoaded and onreadystatechange (which\n// fire before onload), but fall back to onload.\nvar called_1=false;var wrappedFn_1=function wrappedFn_1(){if(!document.body){setTimeout(wrappedFn_1,Math.floor(10));return;}if(!called_1){called_1=true;fn();}};if(document.addEventListener){document.addEventListener('DOMContentLoaded',wrappedFn_1,false);// fallback to onload.\nwindow.addEventListener('load',wrappedFn_1,false);}else if(document.attachEvent){// IE.\ndocument.attachEvent('onreadystatechange',function(){if(document.readyState==='complete')wrappedFn_1();});// fallback to onload.\nwindow.attachEvent('onload',wrappedFn_1);// jQuery has an extra hack for IE that we could employ (based on\n// http://javascript.nwbox.com/IEContentLoaded/) But it looks really old.\n// I'm hoping we don't need it.\n}}};/**\r\n * Minimum key name. Invalid for actual data, used as a marker to sort before any valid names\r\n * @type {!string}\r\n */var MIN_NAME='[MIN_NAME]';/**\r\n * Maximum key name. Invalid for actual data, used as a marker to sort above any valid names\r\n * @type {!string}\r\n */var MAX_NAME='[MAX_NAME]';/**\r\n * Compares valid Firebase key names, plus min and max name\r\n * @param {!string} a\r\n * @param {!string} b\r\n * @return {!number}\r\n */var nameCompare=function nameCompare(a,b){if(a===b){return 0;}else if(a===MIN_NAME||b===MAX_NAME){return-1;}else if(b===MIN_NAME||a===MAX_NAME){return 1;}else{var aAsInt=tryParseInt(a),bAsInt=tryParseInt(b);if(aAsInt!==null){if(bAsInt!==null){return aAsInt-bAsInt==0?a.length-b.length:aAsInt-bAsInt;}else{return-1;}}else if(bAsInt!==null){return 1;}else{return a<b?-1:1;}}};/**\r\n * @param {!string} a\r\n * @param {!string} b\r\n * @return {!number} comparison result.\r\n */var stringCompare=function stringCompare(a,b){if(a===b){return 0;}else if(a<b){return-1;}else{return 1;}};/**\r\n * @param {string} key\r\n * @param {Object} obj\r\n * @return {*}\r\n */var requireKey=function requireKey(key,obj){if(obj&&key in obj){return obj[key];}else{throw new Error('Missing required key ('+key+') in object: '+util.stringify(obj));}};/**\r\n * @param {*} obj\r\n * @return {string}\r\n */var ObjectToUniqueKey=function ObjectToUniqueKey(obj){if(typeof obj!=='object'||obj===null)return util.stringify(obj);var keys=[];for(var k in obj){keys.push(k);}// Export as json, but with the keys sorted.\nkeys.sort();var key='{';for(var i=0;i<keys.length;i++){if(i!==0)key+=',';key+=util.stringify(keys[i]);key+=':';key+=ObjectToUniqueKey(obj[keys[i]]);}key+='}';return key;};/**\r\n * Splits a string into a number of smaller segments of maximum size\r\n * @param {!string} str The string\r\n * @param {!number} segsize The maximum number of chars in the string.\r\n * @return {Array.<string>} The string, split into appropriately-sized chunks\r\n */var splitStringBySize=function splitStringBySize(str,segsize){var len=str.length;if(len<=segsize){return[str];}var dataSegs=[];for(var c=0;c<len;c+=segsize){if(c+segsize>len){dataSegs.push(str.substring(c,len));}else{dataSegs.push(str.substring(c,c+segsize));}}return dataSegs;};/**\r\n * Apply a function to each (key, value) pair in an object or\r\n * apply a function to each (index, value) pair in an array\r\n * @param {!(Object|Array)} obj The object or array to iterate over\r\n * @param {function(?, ?)} fn The function to apply\r\n */var each=function each(obj,fn){if(Array.isArray(obj)){for(var i=0;i<obj.length;++i){fn(i,obj[i]);}}else{/**\r\n         * in the conversion of code we removed the goog.object.forEach\r\n         * function which did a value,key callback. We standardized on\r\n         * a single impl that does a key, value callback. So we invert\r\n         * to not have to touch the `each` code points\r\n         */util.forEach(obj,function(key,val){return fn(val,key);});}};/**\r\n * Borrowed from http://hg.secondlife.com/llsd/src/tip/js/typedarray.js (MIT License)\r\n * I made one modification at the end and removed the NaN / Infinity\r\n * handling (since it seemed broken [caused an overflow] and we don't need it).  See MJL comments.\r\n * @param {!number} v A double\r\n * @return {string}\r\n */var doubleToIEEE754String=function doubleToIEEE754String(v){util.assert(!isInvalidJSONNumber(v),'Invalid JSON number');// MJL\nvar ebits=11,fbits=52;var bias=(1<<ebits-1)-1,s,e,f,ln,i,bits,str;// Compute sign, exponent, fraction\n// Skip NaN / Infinity handling --MJL.\nif(v===0){e=0;f=0;s=1/v===-Infinity?1:0;}else{s=v<0;v=Math.abs(v);if(v>=Math.pow(2,1-bias)){// Normalized\nln=Math.min(Math.floor(Math.log(v)/Math.LN2),bias);e=ln+bias;f=Math.round(v*Math.pow(2,fbits-ln)-Math.pow(2,fbits));}else{// Denormalized\ne=0;f=Math.round(v/Math.pow(2,1-bias-fbits));}}// Pack sign, exponent, fraction\nbits=[];for(i=fbits;i;i-=1){bits.push(f%2?1:0);f=Math.floor(f/2);}for(i=ebits;i;i-=1){bits.push(e%2?1:0);e=Math.floor(e/2);}bits.push(s?1:0);bits.reverse();str=bits.join('');// Return the data as a hex string. --MJL\nvar hexByteString='';for(i=0;i<64;i+=8){var hexByte=parseInt(str.substr(i,8),2).toString(16);if(hexByte.length===1)hexByte='0'+hexByte;hexByteString=hexByteString+hexByte;}return hexByteString.toLowerCase();};/**\r\n * Used to detect if we're in a Chrome content script (which executes in an\r\n * isolated environment where long-polling doesn't work).\r\n * @return {boolean}\r\n */var isChromeExtensionContentScript=function isChromeExtensionContentScript(){return!!(typeof window==='object'&&window['chrome']&&window['chrome']['extension']&&!/^chrome/.test(window.location.href));};/**\r\n * Used to detect if we're in a Windows 8 Store app.\r\n * @return {boolean}\r\n */var isWindowsStoreApp=function isWindowsStoreApp(){// Check for the presence of a couple WinRT globals\nreturn typeof Windows==='object'&&typeof Windows.UI==='object';};/**\r\n * Converts a server error code to a Javascript Error\r\n * @param {!string} code\r\n * @param {!Query} query\r\n * @return {Error}\r\n */var errorForServerCode=function errorForServerCode(code,query){var reason='Unknown Error';if(code==='too_big'){reason='The data requested exceeds the maximum size '+'that can be accessed with a single request.';}else if(code=='permission_denied'){reason=\"Client doesn't have permission to access the desired data.\";}else if(code=='unavailable'){reason='The service is unavailable';}var error=new Error(code+' at '+query.path.toString()+': '+reason);error.code=code.toUpperCase();return error;};/**\r\n * Used to test for integer-looking strings\r\n * @type {RegExp}\r\n * @private\r\n */var INTEGER_REGEXP_=new RegExp('^-?\\\\d{1,10}$');/**\r\n * If the string contains a 32-bit integer, return it.  Else return null.\r\n * @param {!string} str\r\n * @return {?number}\r\n */var tryParseInt=function tryParseInt(str){if(INTEGER_REGEXP_.test(str)){var intVal=Number(str);if(intVal>=-2147483648&&intVal<=2147483647){return intVal;}}return null;};/**\r\n * Helper to run some code but catch any exceptions and re-throw them later.\r\n * Useful for preventing user callbacks from breaking internal code.\r\n *\r\n * Re-throwing the exception from a setTimeout is a little evil, but it's very\r\n * convenient (we don't have to try to figure out when is a safe point to\r\n * re-throw it), and the behavior seems reasonable:\r\n *\r\n * * If you aren't pausing on exceptions, you get an error in the console with\r\n *   the correct stack trace.\r\n * * If you're pausing on all exceptions, the debugger will pause on your\r\n *   exception and then again when we rethrow it.\r\n * * If you're only pausing on uncaught exceptions, the debugger will only pause\r\n *   on us re-throwing it.\r\n *\r\n * @param {!function()} fn The code to guard.\r\n */var exceptionGuard=function exceptionGuard(fn){try{fn();}catch(e){// Re-throw exception when it's safe.\nsetTimeout(function(){// It used to be that \"throw e\" would result in a good console error with\n// relevant context, but as of Chrome 39, you just get the firebase.js\n// file/line number where we re-throw it, which is useless. So we log\n// e.stack explicitly.\nvar stack=e.stack||'';warn('Exception was thrown by user callback.',stack);throw e;},Math.floor(0));}};/**\r\n * @return {boolean} true if we think we're currently being crawled.\r\n */var beingCrawled=function beingCrawled(){var userAgent=typeof window==='object'&&window['navigator']&&window['navigator']['userAgent']||'';// For now we whitelist the most popular crawlers.  We should refine this to be the set of crawlers we\n// believe to support JavaScript/AJAX rendering.\n// NOTE: Google Webmaster Tools doesn't really belong, but their \"This is how a visitor to your website\n// would have seen the page\" is flaky if we don't treat it as a crawler.\nreturn userAgent.search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i)>=0;};/**\r\n * Same as setTimeout() except on Node.JS it will /not/ prevent the process from exiting.\r\n *\r\n * It is removed with clearTimeout() as normal.\r\n *\r\n * @param {Function} fn Function to run.\r\n * @param {number} time Milliseconds to wait before running.\r\n * @return {number|Object} The setTimeout() return value.\r\n */var setTimeoutNonBlocking=function setTimeoutNonBlocking(fn,time){var timeout=setTimeout(fn,time);if(typeof timeout==='object'&&timeout['unref']){timeout['unref']();}return timeout;};/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * An immutable object representing a parsed path.  It's immutable so that you\r\n * can pass them around to other functions without worrying about them changing\r\n * it.\r\n */var Path=/** @class */function(){/**\r\n     * @param {string|Array.<string>} pathOrString Path string to parse,\r\n     *      or another path, or the raw tokens array\r\n     * @param {number=} pieceNum\r\n     */function Path(pathOrString,pieceNum){if(pieceNum===void 0){this.pieces_=pathOrString.split('/');// Remove empty pieces.\nvar copyTo=0;for(var i=0;i<this.pieces_.length;i++){if(this.pieces_[i].length>0){this.pieces_[copyTo]=this.pieces_[i];copyTo++;}}this.pieces_.length=copyTo;this.pieceNum_=0;}else{this.pieces_=pathOrString;this.pieceNum_=pieceNum;}}Object.defineProperty(Path,\"Empty\",{/**\r\n         * Singleton to represent an empty path\r\n         *\r\n         * @const\r\n         */get:function get(){return new Path('');},enumerable:true,configurable:true});Path.prototype.getFront=function(){if(this.pieceNum_>=this.pieces_.length)return null;return this.pieces_[this.pieceNum_];};/**\r\n     * @return {number} The number of segments in this path\r\n     */Path.prototype.getLength=function(){return this.pieces_.length-this.pieceNum_;};/**\r\n     * @return {!Path}\r\n     */Path.prototype.popFront=function(){var pieceNum=this.pieceNum_;if(pieceNum<this.pieces_.length){pieceNum++;}return new Path(this.pieces_,pieceNum);};/**\r\n     * @return {?string}\r\n     */Path.prototype.getBack=function(){if(this.pieceNum_<this.pieces_.length)return this.pieces_[this.pieces_.length-1];return null;};Path.prototype.toString=function(){var pathString='';for(var i=this.pieceNum_;i<this.pieces_.length;i++){if(this.pieces_[i]!=='')pathString+='/'+this.pieces_[i];}return pathString||'/';};Path.prototype.toUrlEncodedString=function(){var pathString='';for(var i=this.pieceNum_;i<this.pieces_.length;i++){if(this.pieces_[i]!=='')pathString+='/'+encodeURIComponent(String(this.pieces_[i]));}return pathString||'/';};/**\r\n     * Shallow copy of the parts of the path.\r\n     *\r\n     * @param {number=} begin\r\n     * @return {!Array<string>}\r\n     */Path.prototype.slice=function(begin){if(begin===void 0){begin=0;}return this.pieces_.slice(this.pieceNum_+begin);};/**\r\n     * @return {?Path}\r\n     */Path.prototype.parent=function(){if(this.pieceNum_>=this.pieces_.length)return null;var pieces=[];for(var i=this.pieceNum_;i<this.pieces_.length-1;i++){pieces.push(this.pieces_[i]);}return new Path(pieces,0);};/**\r\n     * @param {string|!Path} childPathObj\r\n     * @return {!Path}\r\n     */Path.prototype.child=function(childPathObj){var pieces=[];for(var i=this.pieceNum_;i<this.pieces_.length;i++){pieces.push(this.pieces_[i]);}if(childPathObj instanceof Path){for(var i=childPathObj.pieceNum_;i<childPathObj.pieces_.length;i++){pieces.push(childPathObj.pieces_[i]);}}else{var childPieces=childPathObj.split('/');for(var i=0;i<childPieces.length;i++){if(childPieces[i].length>0)pieces.push(childPieces[i]);}}return new Path(pieces,0);};/**\r\n     * @return {boolean} True if there are no segments in this path\r\n     */Path.prototype.isEmpty=function(){return this.pieceNum_>=this.pieces_.length;};/**\r\n     * @param {!Path} outerPath\r\n     * @param {!Path} innerPath\r\n     * @return {!Path} The path from outerPath to innerPath\r\n     */Path.relativePath=function(outerPath,innerPath){var outer=outerPath.getFront(),inner=innerPath.getFront();if(outer===null){return innerPath;}else if(outer===inner){return Path.relativePath(outerPath.popFront(),innerPath.popFront());}else{throw new Error('INTERNAL ERROR: innerPath ('+innerPath+') is not within '+'outerPath ('+outerPath+')');}};/**\r\n     * @param {!Path} left\r\n     * @param {!Path} right\r\n     * @return {number} -1, 0, 1 if left is less, equal, or greater than the right.\r\n     */Path.comparePaths=function(left,right){var leftKeys=left.slice();var rightKeys=right.slice();for(var i=0;i<leftKeys.length&&i<rightKeys.length;i++){var cmp=nameCompare(leftKeys[i],rightKeys[i]);if(cmp!==0)return cmp;}if(leftKeys.length===rightKeys.length)return 0;return leftKeys.length<rightKeys.length?-1:1;};/**\r\n     *\r\n     * @param {Path} other\r\n     * @return {boolean} true if paths are the same.\r\n     */Path.prototype.equals=function(other){if(this.getLength()!==other.getLength()){return false;}for(var i=this.pieceNum_,j=other.pieceNum_;i<=this.pieces_.length;i++,j++){if(this.pieces_[i]!==other.pieces_[j]){return false;}}return true;};/**\r\n     *\r\n     * @param {!Path} other\r\n     * @return {boolean} True if this path is a parent (or the same as) other\r\n     */Path.prototype.contains=function(other){var i=this.pieceNum_;var j=other.pieceNum_;if(this.getLength()>other.getLength()){return false;}while(i<this.pieces_.length){if(this.pieces_[i]!==other.pieces_[j]){return false;}++i;++j;}return true;};return Path;}();// end Path\n/**\r\n * Dynamic (mutable) path used to count path lengths.\r\n *\r\n * This class is used to efficiently check paths for valid\r\n * length (in UTF8 bytes) and depth (used in path validation).\r\n *\r\n * Throws Error exception if path is ever invalid.\r\n *\r\n * The definition of a path always begins with '/'.\r\n */var ValidationPath=/** @class */function(){/**\r\n     * @param {!Path} path Initial Path.\r\n     * @param {string} errorPrefix_ Prefix for any error messages.\r\n     */function ValidationPath(path,errorPrefix_){this.errorPrefix_=errorPrefix_;/** @type {!Array<string>} */this.parts_=path.slice();/** @type {number} Initialize to number of '/' chars needed in path. */this.byteLength_=Math.max(1,this.parts_.length);for(var i=0;i<this.parts_.length;i++){this.byteLength_+=util.stringLength(this.parts_[i]);}this.checkValid_();}Object.defineProperty(ValidationPath,\"MAX_PATH_DEPTH\",{/** @const {number} Maximum key depth. */get:function get(){return 32;},enumerable:true,configurable:true});Object.defineProperty(ValidationPath,\"MAX_PATH_LENGTH_BYTES\",{/** @const {number} Maximum number of (UTF8) bytes in a Firebase path. */get:function get(){return 768;},enumerable:true,configurable:true});/** @param {string} child */ValidationPath.prototype.push=function(child){// Count the needed '/'\nif(this.parts_.length>0){this.byteLength_+=1;}this.parts_.push(child);this.byteLength_+=util.stringLength(child);this.checkValid_();};ValidationPath.prototype.pop=function(){var last=this.parts_.pop();this.byteLength_-=util.stringLength(last);// Un-count the previous '/'\nif(this.parts_.length>0){this.byteLength_-=1;}};ValidationPath.prototype.checkValid_=function(){if(this.byteLength_>ValidationPath.MAX_PATH_LENGTH_BYTES){throw new Error(this.errorPrefix_+'has a key path longer than '+ValidationPath.MAX_PATH_LENGTH_BYTES+' bytes ('+this.byteLength_+').');}if(this.parts_.length>ValidationPath.MAX_PATH_DEPTH){throw new Error(this.errorPrefix_+'path specified exceeds the maximum depth that can be written ('+ValidationPath.MAX_PATH_DEPTH+') or object contains a cycle '+this.toErrorString());}};/**\r\n     * String for use in error messages - uses '.' notation for path.\r\n     *\r\n     * @return {string}\r\n     */ValidationPath.prototype.toErrorString=function(){if(this.parts_.length==0){return'';}return\"in property '\"+this.parts_.join('.')+\"'\";};return ValidationPath;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var PROTOCOL_VERSION='5';var VERSION_PARAM='v';var TRANSPORT_SESSION_PARAM='s';var REFERER_PARAM='r';var FORGE_REF='f';var FORGE_DOMAIN='firebaseio.com';var LAST_SESSION_PARAM='ls';var WEBSOCKET='websocket';var LONG_POLLING='long_polling';/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * A class that holds metadata about a Repo object\r\n *\r\n * @constructor\r\n */var RepoInfo=/** @class */function(){/**\r\n     * @param {string} host Hostname portion of the url for the repo\r\n     * @param {boolean} secure Whether or not this repo is accessed over ssl\r\n     * @param {string} namespace The namespace represented by the repo\r\n     * @param {boolean} webSocketOnly Whether to prefer websockets over all other transports (used by Nest).\r\n     * @param {string=} persistenceKey Override the default session persistence storage key\r\n     */function RepoInfo(host,secure,namespace,webSocketOnly,persistenceKey){if(persistenceKey===void 0){persistenceKey='';}this.secure=secure;this.namespace=namespace;this.webSocketOnly=webSocketOnly;this.persistenceKey=persistenceKey;this.host=host.toLowerCase();this.domain=this.host.substr(this.host.indexOf('.')+1);this.internalHost=PersistentStorage.get('host:'+host)||this.host;}RepoInfo.prototype.needsQueryParam=function(){return this.host!==this.internalHost||this.isCustomHost();};RepoInfo.prototype.isCacheableHost=function(){return this.internalHost.substr(0,2)==='s-';};RepoInfo.prototype.isDemoHost=function(){return this.domain==='firebaseio-demo.com';};RepoInfo.prototype.isCustomHost=function(){return this.domain!=='firebaseio.com'&&this.domain!=='firebaseio-demo.com';};RepoInfo.prototype.updateHost=function(newHost){if(newHost!==this.internalHost){this.internalHost=newHost;if(this.isCacheableHost()){PersistentStorage.set('host:'+this.host,this.internalHost);}}};/**\r\n     * Returns the websocket URL for this repo\r\n     * @param {string} type of connection\r\n     * @param {Object} params list\r\n     * @return {string} The URL for this repo\r\n     */RepoInfo.prototype.connectionURL=function(type,params){util.assert(typeof type==='string','typeof type must == string');util.assert(typeof params==='object','typeof params must == object');var connURL;if(type===WEBSOCKET){connURL=(this.secure?'wss://':'ws://')+this.internalHost+'/.ws?';}else if(type===LONG_POLLING){connURL=(this.secure?'https://':'http://')+this.internalHost+'/.lp?';}else{throw new Error('Unknown connection type: '+type);}if(this.needsQueryParam()){params['ns']=this.namespace;}var pairs=[];util.forEach(params,function(key,value){pairs.push(key+'='+value);});return connURL+pairs.join('&');};/** @return {string} */RepoInfo.prototype.toString=function(){var str=this.toURLString();if(this.persistenceKey){str+='<'+this.persistenceKey+'>';}return str;};/** @return {string} */RepoInfo.prototype.toURLString=function(){return(this.secure?'https://':'http://')+this.host;};return RepoInfo;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @param {!string} pathString\r\n * @return {string}\r\n */function decodePath(pathString){var pathStringDecoded='';var pieces=pathString.split('/');for(var i=0;i<pieces.length;i++){if(pieces[i].length>0){var piece=pieces[i];try{piece=decodeURIComponent(piece.replace(/\\+/g,' '));}catch(e){}pathStringDecoded+='/'+piece;}}return pathStringDecoded;}/**\r\n * @param {!string} queryString\r\n * @return {!{[key:string]:string}} key value hash\r\n */function decodeQuery(queryString){var results={};if(queryString.charAt(0)==='?'){queryString=queryString.substring(1);}for(var _i=0,_a=queryString.split('&');_i<_a.length;_i++){var segment=_a[_i];if(segment.length===0){continue;}var kv=segment.split('=');if(kv.length===2){results[decodeURIComponent(kv[0])]=decodeURIComponent(kv[1]);}else{warn(\"Invalid query segment '\"+segment+\"' in query '\"+queryString+\"'\");}}return results;}/**\r\n *\r\n * @param {!string} dataURL\r\n * @return {{repoInfo: !RepoInfo, path: !Path}}\r\n */var parseRepoInfo=function parseRepoInfo(dataURL){var parsedUrl=parseURL(dataURL),namespace=parsedUrl.subdomain;if(parsedUrl.domain==='firebase'){fatal(parsedUrl.host+' is no longer supported. '+'Please use <YOUR FIREBASE>.firebaseio.com instead');}// Catch common error of uninitialized namespace value.\nif((!namespace||namespace=='undefined')&&parsedUrl.domain!=='localhost'){fatal('Cannot parse Firebase url. Please use https://<YOUR FIREBASE>.firebaseio.com');}if(!parsedUrl.secure){warnIfPageIsSecure();}var webSocketOnly=parsedUrl.scheme==='ws'||parsedUrl.scheme==='wss';return{repoInfo:new RepoInfo(parsedUrl.host,parsedUrl.secure,namespace,webSocketOnly),path:new Path(parsedUrl.pathString)};};/**\r\n *\r\n * @param {!string} dataURL\r\n * @return {{host: string, port: number, domain: string, subdomain: string, secure: boolean, scheme: string, pathString: string}}\r\n */var parseURL=function parseURL(dataURL){// Default to empty strings in the event of a malformed string.\nvar host='',domain='',subdomain='',pathString='';// Always default to SSL, unless otherwise specified.\nvar secure=true,scheme='https',port=443;// Don't do any validation here. The caller is responsible for validating the result of parsing.\nif(typeof dataURL==='string'){// Parse scheme.\nvar colonInd=dataURL.indexOf('//');if(colonInd>=0){scheme=dataURL.substring(0,colonInd-1);dataURL=dataURL.substring(colonInd+2);}// Parse host, path, and query string.\nvar slashInd=dataURL.indexOf('/');if(slashInd===-1){slashInd=dataURL.length;}var questionMarkInd=dataURL.indexOf('?');if(questionMarkInd===-1){questionMarkInd=dataURL.length;}host=dataURL.substring(0,Math.min(slashInd,questionMarkInd));if(slashInd<questionMarkInd){// For pathString, questionMarkInd will always come after slashInd\npathString=decodePath(dataURL.substring(slashInd,questionMarkInd));}var queryParams=decodeQuery(dataURL.substring(Math.min(dataURL.length,questionMarkInd)));// If we have a port, use scheme for determining if it's secure.\ncolonInd=host.indexOf(':');if(colonInd>=0){secure=scheme==='https'||scheme==='wss';port=parseInt(host.substring(colonInd+1),10);}else{colonInd=dataURL.length;}var parts=host.split('.');if(parts.length===3){// Normalize namespaces to lowercase to share storage / connection.\ndomain=parts[1];subdomain=parts[0].toLowerCase();}else if(parts.length===2){domain=parts[0];}else if(parts[0].slice(0,colonInd).toLowerCase()==='localhost'){domain='localhost';}// Support `ns` query param if subdomain not already set\nif(subdomain===''&&'ns'in queryParams){subdomain=queryParams['ns'];}}return{host:host,port:port,domain:domain,subdomain:subdomain,secure:secure,scheme:scheme,pathString:pathString};};/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * True for invalid Firebase keys\r\n * @type {RegExp}\r\n * @private\r\n */var INVALID_KEY_REGEX_=/[\\[\\].#$\\/\\u0000-\\u001F\\u007F]/;/**\r\n * True for invalid Firebase paths.\r\n * Allows '/' in paths.\r\n * @type {RegExp}\r\n * @private\r\n */var INVALID_PATH_REGEX_=/[\\[\\].#$\\u0000-\\u001F\\u007F]/;/**\r\n * Maximum number of characters to allow in leaf value\r\n * @type {number}\r\n * @private\r\n */var MAX_LEAF_SIZE_=10*1024*1024;/**\r\n * @param {*} key\r\n * @return {boolean}\r\n */var isValidKey=function isValidKey(key){return typeof key==='string'&&key.length!==0&&!INVALID_KEY_REGEX_.test(key);};/**\r\n * @param {string} pathString\r\n * @return {boolean}\r\n */var isValidPathString=function isValidPathString(pathString){return typeof pathString==='string'&&pathString.length!==0&&!INVALID_PATH_REGEX_.test(pathString);};/**\r\n * @param {string} pathString\r\n * @return {boolean}\r\n */var isValidRootPathString=function isValidRootPathString(pathString){if(pathString){// Allow '/.info/' at the beginning.\npathString=pathString.replace(/^\\/*\\.info(\\/|$)/,'/');}return isValidPathString(pathString);};/**\r\n * @param {*} priority\r\n * @return {boolean}\r\n */var isValidPriority=function isValidPriority(priority){return priority===null||typeof priority==='string'||typeof priority==='number'&&!isInvalidJSONNumber(priority)||priority&&typeof priority==='object'&&util.contains(priority,'.sv');};/**\r\n * Pre-validate a datum passed as an argument to Firebase function.\r\n *\r\n * @param {string} fnName\r\n * @param {number} argumentNumber\r\n * @param {*} data\r\n * @param {!Path} path\r\n * @param {boolean} optional\r\n */var validateFirebaseDataArg=function validateFirebaseDataArg(fnName,argumentNumber,data,path,optional){if(optional&&data===undefined)return;validateFirebaseData(util.errorPrefix(fnName,argumentNumber,optional),data,path);};/**\r\n * Validate a data object client-side before sending to server.\r\n *\r\n * @param {string} errorPrefix\r\n * @param {*} data\r\n * @param {!Path|!ValidationPath} path_\r\n */var validateFirebaseData=function validateFirebaseData(errorPrefix,data,path_){var path=path_ instanceof Path?new ValidationPath(path_,errorPrefix):path_;if(data===undefined){throw new Error(errorPrefix+'contains undefined '+path.toErrorString());}if(typeof data==='function'){throw new Error(errorPrefix+'contains a function '+path.toErrorString()+' with contents = '+data.toString());}if(isInvalidJSONNumber(data)){throw new Error(errorPrefix+'contains '+data.toString()+' '+path.toErrorString());}// Check max leaf size, but try to avoid the utf8 conversion if we can.\nif(typeof data==='string'&&data.length>MAX_LEAF_SIZE_/3&&util.stringLength(data)>MAX_LEAF_SIZE_){throw new Error(errorPrefix+'contains a string greater than '+MAX_LEAF_SIZE_+' utf8 bytes '+path.toErrorString()+\" ('\"+data.substring(0,50)+\"...')\");}// TODO = Perf = Consider combining the recursive validation of keys into NodeFromJSON\n// to save extra walking of large objects.\nif(data&&typeof data==='object'){var hasDotValue_1=false,hasActualChild_1=false;util.forEach(data,function(key,value){if(key==='.value'){hasDotValue_1=true;}else if(key!=='.priority'&&key!=='.sv'){hasActualChild_1=true;if(!isValidKey(key)){throw new Error(errorPrefix+' contains an invalid key ('+key+') '+path.toErrorString()+'.  Keys must be non-empty strings '+'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');}}path.push(key);validateFirebaseData(errorPrefix,value,path);path.pop();});if(hasDotValue_1&&hasActualChild_1){throw new Error(errorPrefix+' contains \".value\" child '+path.toErrorString()+' in addition to actual children.');}}};/**\r\n * Pre-validate paths passed in the firebase function.\r\n *\r\n * @param {string} errorPrefix\r\n * @param {Array<!Path>} mergePaths\r\n */var validateFirebaseMergePaths=function validateFirebaseMergePaths(errorPrefix,mergePaths){var i,curPath;for(i=0;i<mergePaths.length;i++){curPath=mergePaths[i];var keys=curPath.slice();for(var j=0;j<keys.length;j++){if(keys[j]==='.priority'&&j===keys.length-1);else if(!isValidKey(keys[j])){throw new Error(errorPrefix+'contains an invalid key ('+keys[j]+') in path '+curPath.toString()+'. Keys must be non-empty strings '+'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');}}}// Check that update keys are not descendants of each other.\n// We rely on the property that sorting guarantees that ancestors come\n// right before descendants.\nmergePaths.sort(Path.comparePaths);var prevPath=null;for(i=0;i<mergePaths.length;i++){curPath=mergePaths[i];if(prevPath!==null&&prevPath.contains(curPath)){throw new Error(errorPrefix+'contains a path '+prevPath.toString()+' that is ancestor of another path '+curPath.toString());}prevPath=curPath;}};/**\r\n * pre-validate an object passed as an argument to firebase function (\r\n * must be an object - e.g. for firebase.update()).\r\n *\r\n * @param {string} fnName\r\n * @param {number} argumentNumber\r\n * @param {*} data\r\n * @param {!Path} path\r\n * @param {boolean} optional\r\n */var validateFirebaseMergeDataArg=function validateFirebaseMergeDataArg(fnName,argumentNumber,data,path,optional){if(optional&&data===undefined)return;var errorPrefix=util.errorPrefix(fnName,argumentNumber,optional);if(!(data&&typeof data==='object')||Array.isArray(data)){throw new Error(errorPrefix+' must be an object containing the children to replace.');}var mergePaths=[];util.forEach(data,function(key,value){var curPath=new Path(key);validateFirebaseData(errorPrefix,value,path.child(curPath));if(curPath.getBack()==='.priority'){if(!isValidPriority(value)){throw new Error(errorPrefix+\"contains an invalid value for '\"+curPath.toString()+\"', which must be a valid \"+'Firebase priority (a string, finite number, server value, or null).');}}mergePaths.push(curPath);});validateFirebaseMergePaths(errorPrefix,mergePaths);};var validatePriority=function validatePriority(fnName,argumentNumber,priority,optional){if(optional&&priority===undefined)return;if(isInvalidJSONNumber(priority))throw new Error(util.errorPrefix(fnName,argumentNumber,optional)+'is '+priority.toString()+', but must be a valid Firebase priority (a string, finite number, '+'server value, or null).');// Special case to allow importing data with a .sv.\nif(!isValidPriority(priority))throw new Error(util.errorPrefix(fnName,argumentNumber,optional)+'must be a valid Firebase priority '+'(a string, finite number, server value, or null).');};var validateEventType=function validateEventType(fnName,argumentNumber,eventType,optional){if(optional&&eventType===undefined)return;switch(eventType){case'value':case'child_added':case'child_removed':case'child_changed':case'child_moved':break;default:throw new Error(util.errorPrefix(fnName,argumentNumber,optional)+'must be a valid event type = \"value\", \"child_added\", \"child_removed\", '+'\"child_changed\", or \"child_moved\".');}};var validateKey=function validateKey(fnName,argumentNumber,key,optional){if(optional&&key===undefined)return;if(!isValidKey(key))throw new Error(util.errorPrefix(fnName,argumentNumber,optional)+'was an invalid key = \"'+key+'\".  Firebase keys must be non-empty strings and '+'can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\").');};var validatePathString=function validatePathString(fnName,argumentNumber,pathString,optional){if(optional&&pathString===undefined)return;if(!isValidPathString(pathString))throw new Error(util.errorPrefix(fnName,argumentNumber,optional)+'was an invalid path = \"'+pathString+'\". Paths must be non-empty strings and '+'can\\'t contain \".\", \"#\", \"$\", \"[\", or \"]\"');};var validateRootPathString=function validateRootPathString(fnName,argumentNumber,pathString,optional){if(pathString){// Allow '/.info/' at the beginning.\npathString=pathString.replace(/^\\/*\\.info(\\/|$)/,'/');}validatePathString(fnName,argumentNumber,pathString,optional);};var validateWritablePath=function validateWritablePath(fnName,path){if(path.getFront()==='.info'){throw new Error(fnName+\" failed = Can't modify data under /.info/\");}};var validateUrl=function validateUrl(fnName,argumentNumber,parsedUrl){// TODO = Validate server better.\nvar pathString=parsedUrl.path.toString();if(!(typeof parsedUrl.repoInfo.host==='string')||parsedUrl.repoInfo.host.length===0||!isValidKey(parsedUrl.repoInfo.namespace)&&parsedUrl.repoInfo.host.split(':')[0]!=='localhost'||pathString.length!==0&&!isValidRootPathString(pathString)){throw new Error(util.errorPrefix(fnName,argumentNumber,false)+'must be a valid firebase URL and '+'the path can\\'t contain \".\", \"#\", \"$\", \"[\", or \"]\".');}};var validateBoolean=function validateBoolean(fnName,argumentNumber,bool,optional){if(optional&&bool===undefined)return;if(typeof bool!=='boolean')throw new Error(util.errorPrefix(fnName,argumentNumber,optional)+'must be a boolean.');};/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @constructor\r\n */var OnDisconnect=/** @class */function(){/**\r\n     * @param {!Repo} repo_\r\n     * @param {!Path} path_\r\n     */function OnDisconnect(repo_,path_){this.repo_=repo_;this.path_=path_;}/**\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */OnDisconnect.prototype.cancel=function(onComplete){util.validateArgCount('OnDisconnect.cancel',0,1,arguments.length);util.validateCallback('OnDisconnect.cancel',1,onComplete,true);var deferred=new util.Deferred();this.repo_.onDisconnectCancel(this.path_,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */OnDisconnect.prototype.remove=function(onComplete){util.validateArgCount('OnDisconnect.remove',0,1,arguments.length);validateWritablePath('OnDisconnect.remove',this.path_);util.validateCallback('OnDisconnect.remove',1,onComplete,true);var deferred=new util.Deferred();this.repo_.onDisconnectSet(this.path_,null,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {*} value\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */OnDisconnect.prototype.set=function(value,onComplete){util.validateArgCount('OnDisconnect.set',1,2,arguments.length);validateWritablePath('OnDisconnect.set',this.path_);validateFirebaseDataArg('OnDisconnect.set',1,value,this.path_,false);util.validateCallback('OnDisconnect.set',2,onComplete,true);var deferred=new util.Deferred();this.repo_.onDisconnectSet(this.path_,value,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {*} value\r\n     * @param {number|string|null} priority\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */OnDisconnect.prototype.setWithPriority=function(value,priority,onComplete){util.validateArgCount('OnDisconnect.setWithPriority',2,3,arguments.length);validateWritablePath('OnDisconnect.setWithPriority',this.path_);validateFirebaseDataArg('OnDisconnect.setWithPriority',1,value,this.path_,false);validatePriority('OnDisconnect.setWithPriority',2,priority,false);util.validateCallback('OnDisconnect.setWithPriority',3,onComplete,true);var deferred=new util.Deferred();this.repo_.onDisconnectSetWithPriority(this.path_,value,priority,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {!Object} objectToMerge\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */OnDisconnect.prototype.update=function(objectToMerge,onComplete){util.validateArgCount('OnDisconnect.update',1,2,arguments.length);validateWritablePath('OnDisconnect.update',this.path_);if(Array.isArray(objectToMerge)){var newObjectToMerge={};for(var i=0;i<objectToMerge.length;++i){newObjectToMerge[''+i]=objectToMerge[i];}objectToMerge=newObjectToMerge;warn('Passing an Array to firebase.database.onDisconnect().update() is deprecated. Use set() if you want to overwrite the '+'existing data, or an Object with integer keys if you really do want to only update some of the children.');}validateFirebaseMergeDataArg('OnDisconnect.update',1,objectToMerge,this.path_,false);util.validateCallback('OnDisconnect.update',2,onComplete,true);var deferred=new util.Deferred();this.repo_.onDisconnectUpdate(this.path_,objectToMerge,deferred.wrapCallback(onComplete));return deferred.promise;};return OnDisconnect;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var TransactionResult=/** @class */function(){/**\r\n     * A type for the resolve value of Firebase.transaction.\r\n     * @constructor\r\n     * @dict\r\n     * @param {boolean} committed\r\n     * @param {DataSnapshot} snapshot\r\n     */function TransactionResult(committed,snapshot){this.committed=committed;this.snapshot=snapshot;}// Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary\n// for end-users\nTransactionResult.prototype.toJSON=function(){util.validateArgCount('TransactionResult.toJSON',0,1,arguments.length);return{committed:this.committed,snapshot:this.snapshot.toJSON()};};return TransactionResult;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Fancy ID generator that creates 20-character string identifiers with the\r\n * following properties:\r\n *\r\n * 1. They're based on timestamp so that they sort *after* any existing ids.\r\n * 2. They contain 72-bits of random data after the timestamp so that IDs won't\r\n *    collide with other clients' IDs.\r\n * 3. They sort *lexicographically* (so the timestamp is converted to characters\r\n *    that will sort properly).\r\n * 4. They're monotonically increasing. Even if you generate more than one in\r\n *    the same timestamp, the latter ones will sort after the former ones. We do\r\n *    this by using the previous random bits but \"incrementing\" them by 1 (only\r\n *    in the case of a timestamp collision).\r\n */var nextPushId=function(){// Modeled after base64 web-safe chars, but ordered by ASCII.\nvar PUSH_CHARS='-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz';// Timestamp of last push, used to prevent local collisions if you push twice\n// in one ms.\nvar lastPushTime=0;// We generate 72-bits of randomness which get turned into 12 characters and\n// appended to the timestamp to prevent collisions with other clients. We\n// store the last characters we generated because in the event of a collision,\n// we'll use those same characters except \"incremented\" by one.\nvar lastRandChars=[];return function(now){var duplicateTime=now===lastPushTime;lastPushTime=now;var i;var timeStampChars=new Array(8);for(i=7;i>=0;i--){timeStampChars[i]=PUSH_CHARS.charAt(now%64);// NOTE: Can't use << here because javascript will convert to int and lose\n// the upper bits.\nnow=Math.floor(now/64);}util.assert(now===0,'Cannot push at time == 0');var id=timeStampChars.join('');if(!duplicateTime){for(i=0;i<12;i++){lastRandChars[i]=Math.floor(Math.random()*64);}}else{// If the timestamp hasn't changed since last push, use the same random\n// number, except incremented by 1.\nfor(i=11;i>=0&&lastRandChars[i]===63;i--){lastRandChars[i]=0;}lastRandChars[i]++;}for(i=0;i<12;i++){id+=PUSH_CHARS.charAt(lastRandChars[i]);}util.assert(id.length===20,'nextPushId: Length should be 20.');return id;};}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n *\r\n * @param {!string} name\r\n * @param {!Node} node\r\n * @constructor\r\n * @struct\r\n */var NamedNode=/** @class */function(){function NamedNode(name,node){this.name=name;this.node=node;}/**\r\n     *\r\n     * @param {!string} name\r\n     * @param {!Node} node\r\n     * @return {NamedNode}\r\n     */NamedNode.Wrap=function(name,node){return new NamedNode(name,node);};return NamedNode;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n *\r\n * @constructor\r\n */var Index=/** @class */function(){function Index(){}/**\r\n     * @return {function(!NamedNode, !NamedNode):number} A standalone comparison function for\r\n     * this index\r\n     */Index.prototype.getCompare=function(){return this.compare.bind(this);};/**\r\n     * Given a before and after value for a node, determine if the indexed value has changed. Even if they are different,\r\n     * it's possible that the changes are isolated to parts of the snapshot that are not indexed.\r\n     *\r\n     * @param {!Node} oldNode\r\n     * @param {!Node} newNode\r\n     * @return {boolean} True if the portion of the snapshot being indexed changed between oldNode and newNode\r\n     */Index.prototype.indexedValueChanged=function(oldNode,newNode){var oldWrapped=new NamedNode(MIN_NAME,oldNode);var newWrapped=new NamedNode(MIN_NAME,newNode);return this.compare(oldWrapped,newWrapped)!==0;};/**\r\n     * @return {!NamedNode} a node wrapper that will sort equal to or less than\r\n     * any other node wrapper, using this index\r\n     */Index.prototype.minPost=function(){return NamedNode.MIN;};return Index;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var __EMPTY_NODE;var KeyIndex=/** @class */function(_super){tslib_1.__extends(KeyIndex,_super);function KeyIndex(){return _super!==null&&_super.apply(this,arguments)||this;}Object.defineProperty(KeyIndex,\"__EMPTY_NODE\",{get:function get(){return __EMPTY_NODE;},set:function set(val){__EMPTY_NODE=val;},enumerable:true,configurable:true});/**\r\n     * @inheritDoc\r\n     */KeyIndex.prototype.compare=function(a,b){return nameCompare(a.name,b.name);};/**\r\n     * @inheritDoc\r\n     */KeyIndex.prototype.isDefinedOn=function(node){// We could probably return true here (since every node has a key), but it's never called\n// so just leaving unimplemented for now.\nthrow util.assertionError('KeyIndex.isDefinedOn not expected to be called.');};/**\r\n     * @inheritDoc\r\n     */KeyIndex.prototype.indexedValueChanged=function(oldNode,newNode){return false;// The key for a node never changes.\n};/**\r\n     * @inheritDoc\r\n     */KeyIndex.prototype.minPost=function(){return NamedNode.MIN;};/**\r\n     * @inheritDoc\r\n     */KeyIndex.prototype.maxPost=function(){// TODO: This should really be created once and cached in a static property, but\n// NamedNode isn't defined yet, so I can't use it in a static.  Bleh.\nreturn new NamedNode(MAX_NAME,__EMPTY_NODE);};/**\r\n     * @param {*} indexValue\r\n     * @param {string} name\r\n     * @return {!NamedNode}\r\n     */KeyIndex.prototype.makePost=function(indexValue,name){util.assert(typeof indexValue==='string','KeyIndex indexValue must always be a string.');// We just use empty node, but it'll never be compared, since our comparator only looks at name.\nreturn new NamedNode(indexValue,__EMPTY_NODE);};/**\r\n     * @return {!string} String representation for inclusion in a query spec\r\n     */KeyIndex.prototype.toString=function(){return'.key';};return KeyIndex;}(Index);var KEY_INDEX=new KeyIndex();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var MAX_NODE;function setMaxNode(val){MAX_NODE=val;}/**\r\n * @param {(!string|!number)} priority\r\n * @return {!string}\r\n */var priorityHashText=function priorityHashText(priority){if(typeof priority==='number')return'number:'+doubleToIEEE754String(priority);else return'string:'+priority;};/**\r\n * Validates that a priority snapshot Node is valid.\r\n *\r\n * @param {!Node} priorityNode\r\n */var validatePriorityNode=function validatePriorityNode(priorityNode){if(priorityNode.isLeafNode()){var val=priorityNode.val();util.assert(typeof val==='string'||typeof val==='number'||typeof val==='object'&&util.contains(val,'.sv'),'Priority must be a string or number.');}else{util.assert(priorityNode===MAX_NODE||priorityNode.isEmpty(),'priority of unexpected type.');}// Don't call getPriority() on MAX_NODE to avoid hitting assertion.\nutil.assert(priorityNode===MAX_NODE||priorityNode.getPriority().isEmpty(),\"Priority nodes can't have a priority of their own.\");};/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var __childrenNodeConstructor;/**\r\n * LeafNode is a class for storing leaf nodes in a DataSnapshot.  It\r\n * implements Node and stores the value of the node (a string,\r\n * number, or boolean) accessible via getValue().\r\n */var LeafNode=/** @class */function(){/**\r\n     * @implements {Node}\r\n     * @param {!(string|number|boolean|Object)} value_ The value to store in this leaf node.\r\n     *                                         The object type is possible in the event of a deferred value\r\n     * @param {!Node=} priorityNode_ The priority of this node.\r\n     */function LeafNode(value_,priorityNode_){if(priorityNode_===void 0){priorityNode_=LeafNode.__childrenNodeConstructor.EMPTY_NODE;}this.value_=value_;this.priorityNode_=priorityNode_;this.lazyHash_=null;util.assert(this.value_!==undefined&&this.value_!==null,\"LeafNode shouldn't be created with null/undefined value.\");validatePriorityNode(this.priorityNode_);}Object.defineProperty(LeafNode,\"__childrenNodeConstructor\",{get:function get(){return __childrenNodeConstructor;},set:function set(val){__childrenNodeConstructor=val;},enumerable:true,configurable:true});/** @inheritDoc */LeafNode.prototype.isLeafNode=function(){return true;};/** @inheritDoc */LeafNode.prototype.getPriority=function(){return this.priorityNode_;};/** @inheritDoc */LeafNode.prototype.updatePriority=function(newPriorityNode){return new LeafNode(this.value_,newPriorityNode);};/** @inheritDoc */LeafNode.prototype.getImmediateChild=function(childName){// Hack to treat priority as a regular child\nif(childName==='.priority'){return this.priorityNode_;}else{return LeafNode.__childrenNodeConstructor.EMPTY_NODE;}};/** @inheritDoc */LeafNode.prototype.getChild=function(path){if(path.isEmpty()){return this;}else if(path.getFront()==='.priority'){return this.priorityNode_;}else{return LeafNode.__childrenNodeConstructor.EMPTY_NODE;}};/**\r\n     * @inheritDoc\r\n     */LeafNode.prototype.hasChild=function(){return false;};/** @inheritDoc */LeafNode.prototype.getPredecessorChildName=function(childName,childNode){return null;};/** @inheritDoc */LeafNode.prototype.updateImmediateChild=function(childName,newChildNode){if(childName==='.priority'){return this.updatePriority(newChildNode);}else if(newChildNode.isEmpty()&&childName!=='.priority'){return this;}else{return LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateImmediateChild(childName,newChildNode).updatePriority(this.priorityNode_);}};/** @inheritDoc */LeafNode.prototype.updateChild=function(path,newChildNode){var front=path.getFront();if(front===null){return newChildNode;}else if(newChildNode.isEmpty()&&front!=='.priority'){return this;}else{util.assert(front!=='.priority'||path.getLength()===1,'.priority must be the last token in a path');return this.updateImmediateChild(front,LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateChild(path.popFront(),newChildNode));}};/** @inheritDoc */LeafNode.prototype.isEmpty=function(){return false;};/** @inheritDoc */LeafNode.prototype.numChildren=function(){return 0;};/** @inheritDoc */LeafNode.prototype.forEachChild=function(index,action){return false;};/**\r\n     * @inheritDoc\r\n     */LeafNode.prototype.val=function(exportFormat){if(exportFormat&&!this.getPriority().isEmpty())return{'.value':this.getValue(),'.priority':this.getPriority().val()};else return this.getValue();};/** @inheritDoc */LeafNode.prototype.hash=function(){if(this.lazyHash_===null){var toHash='';if(!this.priorityNode_.isEmpty())toHash+='priority:'+priorityHashText(this.priorityNode_.val())+':';var type=typeof this.value_;toHash+=type+':';if(type==='number'){toHash+=doubleToIEEE754String(this.value_);}else{toHash+=this.value_;}this.lazyHash_=sha1(toHash);}return this.lazyHash_;};/**\r\n     * Returns the value of the leaf node.\r\n     * @return {Object|string|number|boolean} The value of the node.\r\n     */LeafNode.prototype.getValue=function(){return this.value_;};/**\r\n     * @inheritDoc\r\n     */LeafNode.prototype.compareTo=function(other){if(other===LeafNode.__childrenNodeConstructor.EMPTY_NODE){return 1;}else if(other instanceof LeafNode.__childrenNodeConstructor){return-1;}else{util.assert(other.isLeafNode(),'Unknown node type');return this.compareToLeafNode_(other);}};/**\r\n     * Comparison specifically for two leaf nodes\r\n     * @param {!LeafNode} otherLeaf\r\n     * @return {!number}\r\n     * @private\r\n     */LeafNode.prototype.compareToLeafNode_=function(otherLeaf){var otherLeafType=typeof otherLeaf.value_;var thisLeafType=typeof this.value_;var otherIndex=LeafNode.VALUE_TYPE_ORDER.indexOf(otherLeafType);var thisIndex=LeafNode.VALUE_TYPE_ORDER.indexOf(thisLeafType);util.assert(otherIndex>=0,'Unknown leaf type: '+otherLeafType);util.assert(thisIndex>=0,'Unknown leaf type: '+thisLeafType);if(otherIndex===thisIndex){// Same type, compare values\nif(thisLeafType==='object'){// Deferred value nodes are all equal, but we should also never get to this point...\nreturn 0;}else{// Note that this works because true > false, all others are number or string comparisons\nif(this.value_<otherLeaf.value_){return-1;}else if(this.value_===otherLeaf.value_){return 0;}else{return 1;}}}else{return thisIndex-otherIndex;}};/**\r\n     * @inheritDoc\r\n     */LeafNode.prototype.withIndex=function(){return this;};/**\r\n     * @inheritDoc\r\n     */LeafNode.prototype.isIndexed=function(){return true;};/**\r\n     * @inheritDoc\r\n     */LeafNode.prototype.equals=function(other){/**\r\n         * @inheritDoc\r\n         */if(other===this){return true;}else if(other.isLeafNode()){var otherLeaf=other;return this.value_===otherLeaf.value_&&this.priorityNode_.equals(otherLeaf.priorityNode_);}else{return false;}};/**\r\n     * The sort order for comparing leaf nodes of different types. If two leaf nodes have\r\n     * the same type, the comparison falls back to their value\r\n     * @type {Array.<!string>}\r\n     * @const\r\n     */LeafNode.VALUE_TYPE_ORDER=['object','boolean','number','string'];return LeafNode;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var nodeFromJSON;var MAX_NODE$1;function setNodeFromJSON(val){nodeFromJSON=val;}function setMaxNode$1(val){MAX_NODE$1=val;}/**\r\n * @constructor\r\n * @extends {Index}\r\n * @private\r\n */var PriorityIndex=/** @class */function(_super){tslib_1.__extends(PriorityIndex,_super);function PriorityIndex(){return _super!==null&&_super.apply(this,arguments)||this;}/**\r\n     * @inheritDoc\r\n     */PriorityIndex.prototype.compare=function(a,b){var aPriority=a.node.getPriority();var bPriority=b.node.getPriority();var indexCmp=aPriority.compareTo(bPriority);if(indexCmp===0){return nameCompare(a.name,b.name);}else{return indexCmp;}};/**\r\n     * @inheritDoc\r\n     */PriorityIndex.prototype.isDefinedOn=function(node){return!node.getPriority().isEmpty();};/**\r\n     * @inheritDoc\r\n     */PriorityIndex.prototype.indexedValueChanged=function(oldNode,newNode){return!oldNode.getPriority().equals(newNode.getPriority());};/**\r\n     * @inheritDoc\r\n     */PriorityIndex.prototype.minPost=function(){return NamedNode.MIN;};/**\r\n     * @inheritDoc\r\n     */PriorityIndex.prototype.maxPost=function(){return new NamedNode(MAX_NAME,new LeafNode('[PRIORITY-POST]',MAX_NODE$1));};/**\r\n     * @param {*} indexValue\r\n     * @param {string} name\r\n     * @return {!NamedNode}\r\n     */PriorityIndex.prototype.makePost=function(indexValue,name){var priorityNode=nodeFromJSON(indexValue);return new NamedNode(name,new LeafNode('[PRIORITY-POST]',priorityNode));};/**\r\n     * @return {!string} String representation for inclusion in a query spec\r\n     */PriorityIndex.prototype.toString=function(){return'.priority';};return PriorityIndex;}(Index);var PRIORITY_INDEX=new PriorityIndex();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * An iterator over an LLRBNode.\r\n */var SortedMapIterator=/** @class */function(){/**\r\n     * @template K, V, T\r\n     * @param {LLRBNode|LLRBEmptyNode} node Node to iterate.\r\n     * @param {?K} startKey\r\n     * @param {function(K, K): number} comparator\r\n     * @param {boolean} isReverse_ Whether or not to iterate in reverse\r\n     * @param {(function(K, V):T)=} resultGenerator_\r\n     */function SortedMapIterator(node,startKey,comparator,isReverse_,resultGenerator_){if(resultGenerator_===void 0){resultGenerator_=null;}this.isReverse_=isReverse_;this.resultGenerator_=resultGenerator_;/** @private\r\n         * @type {Array.<!LLRBNode>}\r\n         */this.nodeStack_=[];var cmp=1;while(!node.isEmpty()){node=node;cmp=startKey?comparator(node.key,startKey):1;// flip the comparison if we're going in reverse\nif(isReverse_)cmp*=-1;if(cmp<0){// This node is less than our start key. ignore it\nif(this.isReverse_){node=node.left;}else{node=node.right;}}else if(cmp===0){// This node is exactly equal to our start key. Push it on the stack, but stop iterating;\nthis.nodeStack_.push(node);break;}else{// This node is greater than our start key, add it to the stack and move to the next one\nthis.nodeStack_.push(node);if(this.isReverse_){node=node.right;}else{node=node.left;}}}}SortedMapIterator.prototype.getNext=function(){if(this.nodeStack_.length===0)return null;var node=this.nodeStack_.pop();var result;if(this.resultGenerator_)result=this.resultGenerator_(node.key,node.value);else result={key:node.key,value:node.value};if(this.isReverse_){node=node.left;while(!node.isEmpty()){this.nodeStack_.push(node);node=node.right;}}else{node=node.right;while(!node.isEmpty()){this.nodeStack_.push(node);node=node.left;}}return result;};SortedMapIterator.prototype.hasNext=function(){return this.nodeStack_.length>0;};SortedMapIterator.prototype.peek=function(){if(this.nodeStack_.length===0)return null;var node=this.nodeStack_[this.nodeStack_.length-1];if(this.resultGenerator_){return this.resultGenerator_(node.key,node.value);}else{return{key:node.key,value:node.value};}};return SortedMapIterator;}();/**\r\n * Represents a node in a Left-leaning Red-Black tree.\r\n */var LLRBNode=/** @class */function(){/**\r\n     * @template K, V\r\n     * @param {!K} key Key associated with this node.\r\n     * @param {!V} value Value associated with this node.\r\n     * @param {?boolean} color Whether this node is red.\r\n     * @param {?(LLRBNode|LLRBEmptyNode)=} left Left child.\r\n     * @param {?(LLRBNode|LLRBEmptyNode)=} right Right child.\r\n     */function LLRBNode(key,value,color,left,right){this.key=key;this.value=value;this.color=color!=null?color:LLRBNode.RED;this.left=left!=null?left:SortedMap.EMPTY_NODE;this.right=right!=null?right:SortedMap.EMPTY_NODE;}/**\r\n     * Returns a copy of the current node, optionally replacing pieces of it.\r\n     *\r\n     * @param {?K} key New key for the node, or null.\r\n     * @param {?V} value New value for the node, or null.\r\n     * @param {?boolean} color New color for the node, or null.\r\n     * @param {?LLRBNode|LLRBEmptyNode} left New left child for the node, or null.\r\n     * @param {?LLRBNode|LLRBEmptyNode} right New right child for the node, or null.\r\n     * @return {!LLRBNode} The node copy.\r\n     */LLRBNode.prototype.copy=function(key,value,color,left,right){return new LLRBNode(key!=null?key:this.key,value!=null?value:this.value,color!=null?color:this.color,left!=null?left:this.left,right!=null?right:this.right);};/**\r\n     * @return {number} The total number of nodes in the tree.\r\n     */LLRBNode.prototype.count=function(){return this.left.count()+1+this.right.count();};/**\r\n     * @return {boolean} True if the tree is empty.\r\n     */LLRBNode.prototype.isEmpty=function(){return false;};/**\r\n     * Traverses the tree in key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!K, !V):*} action Callback function to be called for each\r\n     *   node.  If it returns true, traversal is aborted.\r\n     * @return {*} The first truthy value returned by action, or the last falsey\r\n     *   value returned by action\r\n     */LLRBNode.prototype.inorderTraversal=function(action){return this.left.inorderTraversal(action)||action(this.key,this.value)||this.right.inorderTraversal(action);};/**\r\n     * Traverses the tree in reverse key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!Object, !Object)} action Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @return {*} True if traversal was aborted.\r\n     */LLRBNode.prototype.reverseTraversal=function(action){return this.right.reverseTraversal(action)||action(this.key,this.value)||this.left.reverseTraversal(action);};/**\r\n     * @return {!Object} The minimum node in the tree.\r\n     * @private\r\n     */LLRBNode.prototype.min_=function(){if(this.left.isEmpty()){return this;}else{return this.left.min_();}};/**\r\n     * @return {!K} The maximum key in the tree.\r\n     */LLRBNode.prototype.minKey=function(){return this.min_().key;};/**\r\n     * @return {!K} The maximum key in the tree.\r\n     */LLRBNode.prototype.maxKey=function(){if(this.right.isEmpty()){return this.key;}else{return this.right.maxKey();}};/**\r\n     *\r\n     * @param {!Object} key Key to insert.\r\n     * @param {!Object} value Value to insert.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBNode} New tree, with the key/value added.\r\n     */LLRBNode.prototype.insert=function(key,value,comparator){var cmp,n;n=this;cmp=comparator(key,n.key);if(cmp<0){n=n.copy(null,null,null,n.left.insert(key,value,comparator),null);}else if(cmp===0){n=n.copy(null,value,null,null,null);}else{n=n.copy(null,null,null,null,n.right.insert(key,value,comparator));}return n.fixUp_();};/**\r\n     * @private\r\n     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the minimum key removed.\r\n     */LLRBNode.prototype.removeMin_=function(){if(this.left.isEmpty()){return SortedMap.EMPTY_NODE;}var n=this;if(!n.left.isRed_()&&!n.left.left.isRed_())n=n.moveRedLeft_();n=n.copy(null,null,null,n.left.removeMin_(),null);return n.fixUp_();};/**\r\n     * @param {!Object} key The key of the item to remove.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the specified item removed.\r\n     */LLRBNode.prototype.remove=function(key,comparator){var n,smallest;n=this;if(comparator(key,n.key)<0){if(!n.left.isEmpty()&&!n.left.isRed_()&&!n.left.left.isRed_()){n=n.moveRedLeft_();}n=n.copy(null,null,null,n.left.remove(key,comparator),null);}else{if(n.left.isRed_())n=n.rotateRight_();if(!n.right.isEmpty()&&!n.right.isRed_()&&!n.right.left.isRed_()){n=n.moveRedRight_();}if(comparator(key,n.key)===0){if(n.right.isEmpty()){return SortedMap.EMPTY_NODE;}else{smallest=n.right.min_();n=n.copy(smallest.key,smallest.value,null,null,n.right.removeMin_());}}n=n.copy(null,null,null,null,n.right.remove(key,comparator));}return n.fixUp_();};/**\r\n     * @private\r\n     * @return {boolean} Whether this is a RED node.\r\n     */LLRBNode.prototype.isRed_=function(){return this.color;};/**\r\n     * @private\r\n     * @return {!LLRBNode} New tree after performing any needed rotations.\r\n     */LLRBNode.prototype.fixUp_=function(){var n=this;if(n.right.isRed_()&&!n.left.isRed_())n=n.rotateLeft_();if(n.left.isRed_()&&n.left.left.isRed_())n=n.rotateRight_();if(n.left.isRed_()&&n.right.isRed_())n=n.colorFlip_();return n;};/**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after moveRedLeft.\r\n     */LLRBNode.prototype.moveRedLeft_=function(){var n=this.colorFlip_();if(n.right.left.isRed_()){n=n.copy(null,null,null,null,n.right.rotateRight_());n=n.rotateLeft_();n=n.colorFlip_();}return n;};/**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after moveRedRight.\r\n     */LLRBNode.prototype.moveRedRight_=function(){var n=this.colorFlip_();if(n.left.left.isRed_()){n=n.rotateRight_();n=n.colorFlip_();}return n;};/**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after rotateLeft.\r\n     */LLRBNode.prototype.rotateLeft_=function(){var nl=this.copy(null,null,LLRBNode.RED,null,this.right.left);return this.right.copy(null,null,this.color,nl,null);};/**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after rotateRight.\r\n     */LLRBNode.prototype.rotateRight_=function(){var nr=this.copy(null,null,LLRBNode.RED,this.left.right,null);return this.left.copy(null,null,this.color,null,nr);};/**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after colorFlip.\r\n     */LLRBNode.prototype.colorFlip_=function(){var left=this.left.copy(null,null,!this.left.color,null,null);var right=this.right.copy(null,null,!this.right.color,null,null);return this.copy(null,null,!this.color,left,right);};/**\r\n     * For testing.\r\n     *\r\n     * @private\r\n     * @return {boolean} True if all is well.\r\n     */LLRBNode.prototype.checkMaxDepth_=function(){var blackDepth=this.check_();return Math.pow(2.0,blackDepth)<=this.count()+1;};/**\r\n     * @private\r\n     * @return {number} Not sure what this returns exactly. :-).\r\n     */LLRBNode.prototype.check_=function(){var blackDepth;if(this.isRed_()&&this.left.isRed_()){throw new Error('Red node has red child('+this.key+','+this.value+')');}if(this.right.isRed_()){throw new Error('Right child of ('+this.key+','+this.value+') is red');}blackDepth=this.left.check_();if(blackDepth!==this.right.check_()){throw new Error('Black depths differ');}else{return blackDepth+(this.isRed_()?0:1);}};LLRBNode.RED=true;LLRBNode.BLACK=false;return LLRBNode;}();/**\r\n * Represents an empty node (a leaf node in the Red-Black Tree).\r\n */var LLRBEmptyNode=/** @class */function(){function LLRBEmptyNode(){}/**\r\n     * Returns a copy of the current node.\r\n     *\r\n     * @return {!LLRBEmptyNode} The node copy.\r\n     */LLRBEmptyNode.prototype.copy=function(key,value,color,left,right){return this;};/**\r\n     * Returns a copy of the tree, with the specified key/value added.\r\n     *\r\n     * @param {!K} key Key to be added.\r\n     * @param {!V} value Value to be added.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBNode} New tree, with item added.\r\n     */LLRBEmptyNode.prototype.insert=function(key,value,comparator){return new LLRBNode(key,value,null);};/**\r\n     * Returns a copy of the tree, with the specified key removed.\r\n     *\r\n     * @param {!K} key The key to remove.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBEmptyNode} New tree, with item removed.\r\n     */LLRBEmptyNode.prototype.remove=function(key,comparator){return this;};/**\r\n     * @return {number} The total number of nodes in the tree.\r\n     */LLRBEmptyNode.prototype.count=function(){return 0;};/**\r\n     * @return {boolean} True if the tree is empty.\r\n     */LLRBEmptyNode.prototype.isEmpty=function(){return true;};/**\r\n     * Traverses the tree in key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!K, !V):*} action Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @return {boolean} True if traversal was aborted.\r\n     */LLRBEmptyNode.prototype.inorderTraversal=function(action){return false;};/**\r\n     * Traverses the tree in reverse key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!K, !V)} action Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @return {boolean} True if traversal was aborted.\r\n     */LLRBEmptyNode.prototype.reverseTraversal=function(action){return false;};/**\r\n     * @return {null}\r\n     */LLRBEmptyNode.prototype.minKey=function(){return null;};/**\r\n     * @return {null}\r\n     */LLRBEmptyNode.prototype.maxKey=function(){return null;};/**\r\n     * @private\r\n     * @return {number} Not sure what this returns exactly. :-).\r\n     */LLRBEmptyNode.prototype.check_=function(){return 0;};/**\r\n     * @private\r\n     * @return {boolean} Whether this node is red.\r\n     */LLRBEmptyNode.prototype.isRed_=function(){return false;};return LLRBEmptyNode;}();/**\r\n * An immutable sorted map implementation, based on a Left-leaning Red-Black\r\n * tree.\r\n */var SortedMap=/** @class */function(){/**\r\n     * @template K, V\r\n     * @param {function(K, K):number} comparator_ Key comparator.\r\n     * @param {LLRBNode=} root_ (Optional) Root node for the map.\r\n     */function SortedMap(comparator_,root_){if(root_===void 0){root_=SortedMap.EMPTY_NODE;}this.comparator_=comparator_;this.root_=root_;}/**\r\n     * Returns a copy of the map, with the specified key/value added or replaced.\r\n     * (TODO: We should perhaps rename this method to 'put')\r\n     *\r\n     * @param {!K} key Key to be added.\r\n     * @param {!V} value Value to be added.\r\n     * @return {!SortedMap.<K, V>} New map, with item added.\r\n     */SortedMap.prototype.insert=function(key,value){return new SortedMap(this.comparator_,this.root_.insert(key,value,this.comparator_).copy(null,null,LLRBNode.BLACK,null,null));};/**\r\n     * Returns a copy of the map, with the specified key removed.\r\n     *\r\n     * @param {!K} key The key to remove.\r\n     * @return {!SortedMap.<K, V>} New map, with item removed.\r\n     */SortedMap.prototype.remove=function(key){return new SortedMap(this.comparator_,this.root_.remove(key,this.comparator_).copy(null,null,LLRBNode.BLACK,null,null));};/**\r\n     * Returns the value of the node with the given key, or null.\r\n     *\r\n     * @param {!K} key The key to look up.\r\n     * @return {?V} The value of the node with the given key, or null if the\r\n     * key doesn't exist.\r\n     */SortedMap.prototype.get=function(key){var cmp;var node=this.root_;while(!node.isEmpty()){cmp=this.comparator_(key,node.key);if(cmp===0){return node.value;}else if(cmp<0){node=node.left;}else if(cmp>0){node=node.right;}}return null;};/**\r\n     * Returns the key of the item *before* the specified key, or null if key is the first item.\r\n     * @param {K} key The key to find the predecessor of\r\n     * @return {?K} The predecessor key.\r\n     */SortedMap.prototype.getPredecessorKey=function(key){var cmp,node=this.root_,rightParent=null;while(!node.isEmpty()){cmp=this.comparator_(key,node.key);if(cmp===0){if(!node.left.isEmpty()){node=node.left;while(!node.right.isEmpty()){node=node.right;}return node.key;}else if(rightParent){return rightParent.key;}else{return null;// first item.\n}}else if(cmp<0){node=node.left;}else if(cmp>0){rightParent=node;node=node.right;}}throw new Error('Attempted to find predecessor key for a nonexistent key.  What gives?');};/**\r\n     * @return {boolean} True if the map is empty.\r\n     */SortedMap.prototype.isEmpty=function(){return this.root_.isEmpty();};/**\r\n     * @return {number} The total number of nodes in the map.\r\n     */SortedMap.prototype.count=function(){return this.root_.count();};/**\r\n     * @return {?K} The minimum key in the map.\r\n     */SortedMap.prototype.minKey=function(){return this.root_.minKey();};/**\r\n     * @return {?K} The maximum key in the map.\r\n     */SortedMap.prototype.maxKey=function(){return this.root_.maxKey();};/**\r\n     * Traverses the map in key order and calls the specified action function\r\n     * for each key/value pair.\r\n     *\r\n     * @param {function(!K, !V):*} action Callback function to be called\r\n     * for each key/value pair.  If action returns true, traversal is aborted.\r\n     * @return {*} The first truthy value returned by action, or the last falsey\r\n     *   value returned by action\r\n     */SortedMap.prototype.inorderTraversal=function(action){return this.root_.inorderTraversal(action);};/**\r\n     * Traverses the map in reverse key order and calls the specified action function\r\n     * for each key/value pair.\r\n     *\r\n     * @param {function(!Object, !Object)} action Callback function to be called\r\n     * for each key/value pair.  If action returns true, traversal is aborted.\r\n     * @return {*} True if the traversal was aborted.\r\n     */SortedMap.prototype.reverseTraversal=function(action){return this.root_.reverseTraversal(action);};/**\r\n     * Returns an iterator over the SortedMap.\r\n     * @template T\r\n     * @param {(function(K, V):T)=} resultGenerator\r\n     * @return {SortedMapIterator.<K, V, T>} The iterator.\r\n     */SortedMap.prototype.getIterator=function(resultGenerator){return new SortedMapIterator(this.root_,null,this.comparator_,false,resultGenerator);};SortedMap.prototype.getIteratorFrom=function(key,resultGenerator){return new SortedMapIterator(this.root_,key,this.comparator_,false,resultGenerator);};SortedMap.prototype.getReverseIteratorFrom=function(key,resultGenerator){return new SortedMapIterator(this.root_,key,this.comparator_,true,resultGenerator);};SortedMap.prototype.getReverseIterator=function(resultGenerator){return new SortedMapIterator(this.root_,null,this.comparator_,true,resultGenerator);};/**\r\n     * Always use the same empty node, to reduce memory.\r\n     * @const\r\n     */SortedMap.EMPTY_NODE=new LLRBEmptyNode();return SortedMap;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var LOG_2=Math.log(2);/**\r\n * @constructor\r\n */var Base12Num=/** @class */function(){/**\r\n     * @param {number} length\r\n     */function Base12Num(length){var logBase2=function logBase2(num){return parseInt(Math.log(num)/LOG_2,10);};var bitMask=function bitMask(bits){return parseInt(Array(bits+1).join('1'),2);};this.count=logBase2(length+1);this.current_=this.count-1;var mask=bitMask(this.count);this.bits_=length+1&mask;}/**\r\n     * @return {boolean}\r\n     */Base12Num.prototype.nextBitIsOne=function(){//noinspection JSBitwiseOperatorUsage\nvar result=!(this.bits_&0x1<<this.current_);this.current_--;return result;};return Base12Num;}();/**\r\n * Takes a list of child nodes and constructs a SortedSet using the given comparison\r\n * function\r\n *\r\n * Uses the algorithm described in the paper linked here:\r\n * http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.46.1458\r\n *\r\n * @template K, V\r\n * @param {Array.<!NamedNode>} childList Unsorted list of children\r\n * @param {function(!NamedNode, !NamedNode):number} cmp The comparison method to be used\r\n * @param {(function(NamedNode):K)=} keyFn An optional function to extract K from a node wrapper, if K's\r\n *                                                        type is not NamedNode\r\n * @param {(function(K, K):number)=} mapSortFn An optional override for comparator used by the generated sorted map\r\n * @return {SortedMap.<K, V>}\r\n */var buildChildSet=function buildChildSet(childList,cmp,keyFn,mapSortFn){childList.sort(cmp);var buildBalancedTree=function buildBalancedTree(low,high){var length=high-low;var namedNode;var key;if(length==0){return null;}else if(length==1){namedNode=childList[low];key=keyFn?keyFn(namedNode):namedNode;return new LLRBNode(key,namedNode.node,LLRBNode.BLACK,null,null);}else{var middle=parseInt(length/2,10)+low;var left=buildBalancedTree(low,middle);var right=buildBalancedTree(middle+1,high);namedNode=childList[middle];key=keyFn?keyFn(namedNode):namedNode;return new LLRBNode(key,namedNode.node,LLRBNode.BLACK,left,right);}};var buildFrom12Array=function buildFrom12Array(base12){var node=null;var root=null;var index=childList.length;var buildPennant=function buildPennant(chunkSize,color){var low=index-chunkSize;var high=index;index-=chunkSize;var childTree=buildBalancedTree(low+1,high);var namedNode=childList[low];var key=keyFn?keyFn(namedNode):namedNode;attachPennant(new LLRBNode(key,namedNode.node,color,null,childTree));};var attachPennant=function attachPennant(pennant){if(node){node.left=pennant;node=pennant;}else{root=pennant;node=pennant;}};for(var i=0;i<base12.count;++i){var isOne=base12.nextBitIsOne();// The number of nodes taken in each slice is 2^(arr.length - (i + 1))\nvar chunkSize=Math.pow(2,base12.count-(i+1));if(isOne){buildPennant(chunkSize,LLRBNode.BLACK);}else{// current == 2\nbuildPennant(chunkSize,LLRBNode.BLACK);buildPennant(chunkSize,LLRBNode.RED);}}return root;};var base12=new Base12Num(childList.length);var root=buildFrom12Array(base12);return new SortedMap(mapSortFn||cmp,root);};/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var _defaultIndexMap;var fallbackObject={};/**\r\n *\r\n * @param {Object.<string, FallbackType|SortedMap.<NamedNode, Node>>} indexes\r\n * @param {Object.<string, Index>} indexSet\r\n * @constructor\r\n */var IndexMap=/** @class */function(){function IndexMap(indexes_,indexSet_){this.indexes_=indexes_;this.indexSet_=indexSet_;}Object.defineProperty(IndexMap,\"Default\",{/**\r\n         * The default IndexMap for nodes without a priority\r\n         * @type {!IndexMap}\r\n         * @const\r\n         */get:function get(){util.assert(fallbackObject&&PRIORITY_INDEX,'ChildrenNode.ts has not been loaded');_defaultIndexMap=_defaultIndexMap||new IndexMap({'.priority':fallbackObject},{'.priority':PRIORITY_INDEX});return _defaultIndexMap;},enumerable:true,configurable:true});/**\r\n     *\r\n     * @param {!string} indexKey\r\n     * @return {?SortedMap.<NamedNode, Node>}\r\n     */IndexMap.prototype.get=function(indexKey){var sortedMap=util.safeGet(this.indexes_,indexKey);if(!sortedMap)throw new Error('No index defined for '+indexKey);if(sortedMap===fallbackObject){// The index exists, but it falls back to just name comparison. Return null so that the calling code uses the\n// regular child map\nreturn null;}else{return sortedMap;}};/**\r\n     * @param {!Index} indexDefinition\r\n     * @return {boolean}\r\n     */IndexMap.prototype.hasIndex=function(indexDefinition){return util.contains(this.indexSet_,indexDefinition.toString());};/**\r\n     * @param {!Index} indexDefinition\r\n     * @param {!SortedMap.<string, !Node>} existingChildren\r\n     * @return {!IndexMap}\r\n     */IndexMap.prototype.addIndex=function(indexDefinition,existingChildren){util.assert(indexDefinition!==KEY_INDEX,\"KeyIndex always exists and isn't meant to be added to the IndexMap.\");var childList=[];var sawIndexedValue=false;var iter=existingChildren.getIterator(NamedNode.Wrap);var next=iter.getNext();while(next){sawIndexedValue=sawIndexedValue||indexDefinition.isDefinedOn(next.node);childList.push(next);next=iter.getNext();}var newIndex;if(sawIndexedValue){newIndex=buildChildSet(childList,indexDefinition.getCompare());}else{newIndex=fallbackObject;}var indexName=indexDefinition.toString();var newIndexSet=util.clone(this.indexSet_);newIndexSet[indexName]=indexDefinition;var newIndexes=util.clone(this.indexes_);newIndexes[indexName]=newIndex;return new IndexMap(newIndexes,newIndexSet);};/**\r\n     * Ensure that this node is properly tracked in any indexes that we're maintaining\r\n     * @param {!NamedNode} namedNode\r\n     * @param {!SortedMap.<string, !Node>} existingChildren\r\n     * @return {!IndexMap}\r\n     */IndexMap.prototype.addToIndexes=function(namedNode,existingChildren){var _this=this;var newIndexes=util.map(this.indexes_,function(indexedChildren,indexName){var index=util.safeGet(_this.indexSet_,indexName);util.assert(index,'Missing index implementation for '+indexName);if(indexedChildren===fallbackObject){// Check to see if we need to index everything\nif(index.isDefinedOn(namedNode.node)){// We need to build this index\nvar childList=[];var iter=existingChildren.getIterator(NamedNode.Wrap);var next=iter.getNext();while(next){if(next.name!=namedNode.name){childList.push(next);}next=iter.getNext();}childList.push(namedNode);return buildChildSet(childList,index.getCompare());}else{// No change, this remains a fallback\nreturn fallbackObject;}}else{var existingSnap=existingChildren.get(namedNode.name);var newChildren=indexedChildren;if(existingSnap){newChildren=newChildren.remove(new NamedNode(namedNode.name,existingSnap));}return newChildren.insert(namedNode,namedNode.node);}});return new IndexMap(newIndexes,this.indexSet_);};/**\r\n     * Create a new IndexMap instance with the given value removed\r\n     * @param {!NamedNode} namedNode\r\n     * @param {!SortedMap.<string, !Node>} existingChildren\r\n     * @return {!IndexMap}\r\n     */IndexMap.prototype.removeFromIndexes=function(namedNode,existingChildren){var newIndexes=util.map(this.indexes_,function(indexedChildren){if(indexedChildren===fallbackObject){// This is the fallback. Just return it, nothing to do in this case\nreturn indexedChildren;}else{var existingSnap=existingChildren.get(namedNode.name);if(existingSnap){return indexedChildren.remove(new NamedNode(namedNode.name,existingSnap));}else{// No record of this child\nreturn indexedChildren;}}});return new IndexMap(newIndexes,this.indexSet_);};return IndexMap;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */function NAME_ONLY_COMPARATOR(left,right){return nameCompare(left.name,right.name);}function NAME_COMPARATOR(left,right){return nameCompare(left,right);}/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */// TODO: For memory savings, don't store priorityNode_ if it's empty.\nvar EMPTY_NODE;/**\r\n * ChildrenNode is a class for storing internal nodes in a DataSnapshot\r\n * (i.e. nodes with children).  It implements Node and stores the\r\n * list of children in the children property, sorted by child name.\r\n *\r\n * @constructor\r\n * @implements {Node}\r\n */var ChildrenNode=/** @class */function(){/**\r\n     *\r\n     * @param {!SortedMap.<string, !Node>} children_ List of children\r\n     * of this node..\r\n     * @param {?Node} priorityNode_ The priority of this node (as a snapshot node).\r\n     * @param {!IndexMap} indexMap_\r\n     */function ChildrenNode(children_,priorityNode_,indexMap_){this.children_=children_;this.priorityNode_=priorityNode_;this.indexMap_=indexMap_;this.lazyHash_=null;/**\r\n         * Note: The only reason we allow null priority is for EMPTY_NODE, since we can't use\r\n         * EMPTY_NODE as the priority of EMPTY_NODE.  We might want to consider making EMPTY_NODE its own\r\n         * class instead of an empty ChildrenNode.\r\n         */if(this.priorityNode_){validatePriorityNode(this.priorityNode_);}if(this.children_.isEmpty()){util.assert(!this.priorityNode_||this.priorityNode_.isEmpty(),'An empty node cannot have a priority');}}Object.defineProperty(ChildrenNode,\"EMPTY_NODE\",{get:function get(){return EMPTY_NODE||(EMPTY_NODE=new ChildrenNode(new SortedMap(NAME_COMPARATOR),null,IndexMap.Default));},enumerable:true,configurable:true});/** @inheritDoc */ChildrenNode.prototype.isLeafNode=function(){return false;};/** @inheritDoc */ChildrenNode.prototype.getPriority=function(){return this.priorityNode_||EMPTY_NODE;};/** @inheritDoc */ChildrenNode.prototype.updatePriority=function(newPriorityNode){if(this.children_.isEmpty()){// Don't allow priorities on empty nodes\nreturn this;}else{return new ChildrenNode(this.children_,newPriorityNode,this.indexMap_);}};/** @inheritDoc */ChildrenNode.prototype.getImmediateChild=function(childName){// Hack to treat priority as a regular child\nif(childName==='.priority'){return this.getPriority();}else{var child=this.children_.get(childName);return child===null?EMPTY_NODE:child;}};/** @inheritDoc */ChildrenNode.prototype.getChild=function(path){var front=path.getFront();if(front===null)return this;return this.getImmediateChild(front).getChild(path.popFront());};/** @inheritDoc */ChildrenNode.prototype.hasChild=function(childName){return this.children_.get(childName)!==null;};/** @inheritDoc */ChildrenNode.prototype.updateImmediateChild=function(childName,newChildNode){util.assert(newChildNode,'We should always be passing snapshot nodes');if(childName==='.priority'){return this.updatePriority(newChildNode);}else{var namedNode=new NamedNode(childName,newChildNode);var newChildren=void 0,newIndexMap=void 0,newPriority=void 0;if(newChildNode.isEmpty()){newChildren=this.children_.remove(childName);newIndexMap=this.indexMap_.removeFromIndexes(namedNode,this.children_);}else{newChildren=this.children_.insert(childName,newChildNode);newIndexMap=this.indexMap_.addToIndexes(namedNode,this.children_);}newPriority=newChildren.isEmpty()?EMPTY_NODE:this.priorityNode_;return new ChildrenNode(newChildren,newPriority,newIndexMap);}};/** @inheritDoc */ChildrenNode.prototype.updateChild=function(path,newChildNode){var front=path.getFront();if(front===null){return newChildNode;}else{util.assert(path.getFront()!=='.priority'||path.getLength()===1,'.priority must be the last token in a path');var newImmediateChild=this.getImmediateChild(front).updateChild(path.popFront(),newChildNode);return this.updateImmediateChild(front,newImmediateChild);}};/** @inheritDoc */ChildrenNode.prototype.isEmpty=function(){return this.children_.isEmpty();};/** @inheritDoc */ChildrenNode.prototype.numChildren=function(){return this.children_.count();};/** @inheritDoc */ChildrenNode.prototype.val=function(exportFormat){if(this.isEmpty())return null;var obj={};var numKeys=0,maxKey=0,allIntegerKeys=true;this.forEachChild(PRIORITY_INDEX,function(key,childNode){obj[key]=childNode.val(exportFormat);numKeys++;if(allIntegerKeys&&ChildrenNode.INTEGER_REGEXP_.test(key)){maxKey=Math.max(maxKey,Number(key));}else{allIntegerKeys=false;}});if(!exportFormat&&allIntegerKeys&&maxKey<2*numKeys){// convert to array.\nvar array=[];for(var key in obj){array[key]=obj[key];}return array;}else{if(exportFormat&&!this.getPriority().isEmpty()){obj['.priority']=this.getPriority().val();}return obj;}};/** @inheritDoc */ChildrenNode.prototype.hash=function(){if(this.lazyHash_===null){var toHash_1='';if(!this.getPriority().isEmpty())toHash_1+='priority:'+priorityHashText(this.getPriority().val())+':';this.forEachChild(PRIORITY_INDEX,function(key,childNode){var childHash=childNode.hash();if(childHash!=='')toHash_1+=':'+key+':'+childHash;});this.lazyHash_=toHash_1===''?'':sha1(toHash_1);}return this.lazyHash_;};/** @inheritDoc */ChildrenNode.prototype.getPredecessorChildName=function(childName,childNode,index){var idx=this.resolveIndex_(index);if(idx){var predecessor=idx.getPredecessorKey(new NamedNode(childName,childNode));return predecessor?predecessor.name:null;}else{return this.children_.getPredecessorKey(childName);}};/**\r\n     * @param {!Index} indexDefinition\r\n     * @return {?string}\r\n     */ChildrenNode.prototype.getFirstChildName=function(indexDefinition){var idx=this.resolveIndex_(indexDefinition);if(idx){var minKey=idx.minKey();return minKey&&minKey.name;}else{return this.children_.minKey();}};/**\r\n     * @param {!Index} indexDefinition\r\n     * @return {?NamedNode}\r\n     */ChildrenNode.prototype.getFirstChild=function(indexDefinition){var minKey=this.getFirstChildName(indexDefinition);if(minKey){return new NamedNode(minKey,this.children_.get(minKey));}else{return null;}};/**\r\n     * Given an index, return the key name of the largest value we have, according to that index\r\n     * @param {!Index} indexDefinition\r\n     * @return {?string}\r\n     */ChildrenNode.prototype.getLastChildName=function(indexDefinition){var idx=this.resolveIndex_(indexDefinition);if(idx){var maxKey=idx.maxKey();return maxKey&&maxKey.name;}else{return this.children_.maxKey();}};/**\r\n     * @param {!Index} indexDefinition\r\n     * @return {?NamedNode}\r\n     */ChildrenNode.prototype.getLastChild=function(indexDefinition){var maxKey=this.getLastChildName(indexDefinition);if(maxKey){return new NamedNode(maxKey,this.children_.get(maxKey));}else{return null;}};/**\r\n     * @inheritDoc\r\n     */ChildrenNode.prototype.forEachChild=function(index,action){var idx=this.resolveIndex_(index);if(idx){return idx.inorderTraversal(function(wrappedNode){return action(wrappedNode.name,wrappedNode.node);});}else{return this.children_.inorderTraversal(action);}};/**\r\n     * @param {!Index} indexDefinition\r\n     * @return {SortedMapIterator}\r\n     */ChildrenNode.prototype.getIterator=function(indexDefinition){return this.getIteratorFrom(indexDefinition.minPost(),indexDefinition);};/**\r\n     *\r\n     * @param {!NamedNode} startPost\r\n     * @param {!Index} indexDefinition\r\n     * @return {!SortedMapIterator}\r\n     */ChildrenNode.prototype.getIteratorFrom=function(startPost,indexDefinition){var idx=this.resolveIndex_(indexDefinition);if(idx){return idx.getIteratorFrom(startPost,function(key){return key;});}else{var iterator=this.children_.getIteratorFrom(startPost.name,NamedNode.Wrap);var next=iterator.peek();while(next!=null&&indexDefinition.compare(next,startPost)<0){iterator.getNext();next=iterator.peek();}return iterator;}};/**\r\n     * @param {!Index} indexDefinition\r\n     * @return {!SortedMapIterator}\r\n     */ChildrenNode.prototype.getReverseIterator=function(indexDefinition){return this.getReverseIteratorFrom(indexDefinition.maxPost(),indexDefinition);};/**\r\n     * @param {!NamedNode} endPost\r\n     * @param {!Index} indexDefinition\r\n     * @return {!SortedMapIterator}\r\n     */ChildrenNode.prototype.getReverseIteratorFrom=function(endPost,indexDefinition){var idx=this.resolveIndex_(indexDefinition);if(idx){return idx.getReverseIteratorFrom(endPost,function(key){return key;});}else{var iterator=this.children_.getReverseIteratorFrom(endPost.name,NamedNode.Wrap);var next=iterator.peek();while(next!=null&&indexDefinition.compare(next,endPost)>0){iterator.getNext();next=iterator.peek();}return iterator;}};/**\r\n     * @inheritDoc\r\n     */ChildrenNode.prototype.compareTo=function(other){if(this.isEmpty()){if(other.isEmpty()){return 0;}else{return-1;}}else if(other.isLeafNode()||other.isEmpty()){return 1;}else if(other===MAX_NODE$2){return-1;}else{// Must be another node with children.\nreturn 0;}};/**\r\n     * @inheritDoc\r\n     */ChildrenNode.prototype.withIndex=function(indexDefinition){if(indexDefinition===KEY_INDEX||this.indexMap_.hasIndex(indexDefinition)){return this;}else{var newIndexMap=this.indexMap_.addIndex(indexDefinition,this.children_);return new ChildrenNode(this.children_,this.priorityNode_,newIndexMap);}};/**\r\n     * @inheritDoc\r\n     */ChildrenNode.prototype.isIndexed=function(index){return index===KEY_INDEX||this.indexMap_.hasIndex(index);};/**\r\n     * @inheritDoc\r\n     */ChildrenNode.prototype.equals=function(other){if(other===this){return true;}else if(other.isLeafNode()){return false;}else{var otherChildrenNode=other;if(!this.getPriority().equals(otherChildrenNode.getPriority())){return false;}else if(this.children_.count()===otherChildrenNode.children_.count()){var thisIter=this.getIterator(PRIORITY_INDEX);var otherIter=otherChildrenNode.getIterator(PRIORITY_INDEX);var thisCurrent=thisIter.getNext();var otherCurrent=otherIter.getNext();while(thisCurrent&&otherCurrent){if(thisCurrent.name!==otherCurrent.name||!thisCurrent.node.equals(otherCurrent.node)){return false;}thisCurrent=thisIter.getNext();otherCurrent=otherIter.getNext();}return thisCurrent===null&&otherCurrent===null;}else{return false;}}};/**\r\n     * Returns a SortedMap ordered by index, or null if the default (by-key) ordering can be used\r\n     * instead.\r\n     *\r\n     * @private\r\n     * @param {!Index} indexDefinition\r\n     * @return {?SortedMap.<NamedNode, Node>}\r\n     */ChildrenNode.prototype.resolveIndex_=function(indexDefinition){if(indexDefinition===KEY_INDEX){return null;}else{return this.indexMap_.get(indexDefinition.toString());}};/**\r\n     * @private\r\n     * @type {RegExp}\r\n     */ChildrenNode.INTEGER_REGEXP_=/^(0|[1-9]\\d*)$/;return ChildrenNode;}();/**\r\n * @constructor\r\n * @extends {ChildrenNode}\r\n * @private\r\n */var MaxNode=/** @class */function(_super){tslib_1.__extends(MaxNode,_super);function MaxNode(){return _super.call(this,new SortedMap(NAME_COMPARATOR),ChildrenNode.EMPTY_NODE,IndexMap.Default)||this;}MaxNode.prototype.compareTo=function(other){if(other===this){return 0;}else{return 1;}};MaxNode.prototype.equals=function(other){// Not that we every compare it, but MAX_NODE is only ever equal to itself\nreturn other===this;};MaxNode.prototype.getPriority=function(){return this;};MaxNode.prototype.getImmediateChild=function(childName){return ChildrenNode.EMPTY_NODE;};MaxNode.prototype.isEmpty=function(){return false;};return MaxNode;}(ChildrenNode);/**\r\n * Marker that will sort higher than any other snapshot.\r\n * @type {!MAX_NODE}\r\n * @const\r\n */var MAX_NODE$2=new MaxNode();Object.defineProperties(NamedNode,{MIN:{value:new NamedNode(MIN_NAME,ChildrenNode.EMPTY_NODE)},MAX:{value:new NamedNode(MAX_NAME,MAX_NODE$2)}});/**\r\n * Reference Extensions\r\n */KeyIndex.__EMPTY_NODE=ChildrenNode.EMPTY_NODE;LeafNode.__childrenNodeConstructor=ChildrenNode;setMaxNode(MAX_NODE$2);setMaxNode$1(MAX_NODE$2);/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var USE_HINZE=true;/**\r\n * Constructs a snapshot node representing the passed JSON and returns it.\r\n * @param {*} json JSON to create a node for.\r\n * @param {?string|?number=} priority Optional priority to use.  This will be ignored if the\r\n * passed JSON contains a .priority property.\r\n * @return {!Node}\r\n */function nodeFromJSON$1(json,priority){if(priority===void 0){priority=null;}if(json===null){return ChildrenNode.EMPTY_NODE;}if(typeof json==='object'&&'.priority'in json){priority=json['.priority'];}util.assert(priority===null||typeof priority==='string'||typeof priority==='number'||typeof priority==='object'&&'.sv'in priority,'Invalid priority type found: '+typeof priority);if(typeof json==='object'&&'.value'in json&&json['.value']!==null){json=json['.value'];}// Valid leaf nodes include non-objects or server-value wrapper objects\nif(typeof json!=='object'||'.sv'in json){var jsonLeaf=json;return new LeafNode(jsonLeaf,nodeFromJSON$1(priority));}if(!(json instanceof Array)&&USE_HINZE){var children_1=[];var childrenHavePriority_1=false;var hinzeJsonObj_1=json;util.forEach(hinzeJsonObj_1,function(key,child){if(typeof key!=='string'||key.substring(0,1)!=='.'){// Ignore metadata nodes\nvar childNode=nodeFromJSON$1(hinzeJsonObj_1[key]);if(!childNode.isEmpty()){childrenHavePriority_1=childrenHavePriority_1||!childNode.getPriority().isEmpty();children_1.push(new NamedNode(key,childNode));}}});if(children_1.length==0){return ChildrenNode.EMPTY_NODE;}var childSet=buildChildSet(children_1,NAME_ONLY_COMPARATOR,function(namedNode){return namedNode.name;},NAME_COMPARATOR);if(childrenHavePriority_1){var sortedChildSet=buildChildSet(children_1,PRIORITY_INDEX.getCompare());return new ChildrenNode(childSet,nodeFromJSON$1(priority),new IndexMap({'.priority':sortedChildSet},{'.priority':PRIORITY_INDEX}));}else{return new ChildrenNode(childSet,nodeFromJSON$1(priority),IndexMap.Default);}}else{var node_1=ChildrenNode.EMPTY_NODE;var jsonObj_1=json;util.forEach(jsonObj_1,function(key,childData){if(util.contains(jsonObj_1,key)){if(key.substring(0,1)!=='.'){// ignore metadata nodes.\nvar childNode=nodeFromJSON$1(childData);if(childNode.isLeafNode()||!childNode.isEmpty())node_1=node_1.updateImmediateChild(key,childNode);}}});return node_1.updatePriority(nodeFromJSON$1(priority));}}setNodeFromJSON(nodeFromJSON$1);/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @constructor\r\n * @extends {Index}\r\n * @private\r\n */var ValueIndex=/** @class */function(_super){tslib_1.__extends(ValueIndex,_super);function ValueIndex(){return _super!==null&&_super.apply(this,arguments)||this;}/**\r\n     * @inheritDoc\r\n     */ValueIndex.prototype.compare=function(a,b){var indexCmp=a.node.compareTo(b.node);if(indexCmp===0){return nameCompare(a.name,b.name);}else{return indexCmp;}};/**\r\n     * @inheritDoc\r\n     */ValueIndex.prototype.isDefinedOn=function(node){return true;};/**\r\n     * @inheritDoc\r\n     */ValueIndex.prototype.indexedValueChanged=function(oldNode,newNode){return!oldNode.equals(newNode);};/**\r\n     * @inheritDoc\r\n     */ValueIndex.prototype.minPost=function(){return NamedNode.MIN;};/**\r\n     * @inheritDoc\r\n     */ValueIndex.prototype.maxPost=function(){return NamedNode.MAX;};/**\r\n     * @param {*} indexValue\r\n     * @param {string} name\r\n     * @return {!NamedNode}\r\n     */ValueIndex.prototype.makePost=function(indexValue,name){var valueNode=nodeFromJSON$1(indexValue);return new NamedNode(name,valueNode);};/**\r\n     * @return {!string} String representation for inclusion in a query spec\r\n     */ValueIndex.prototype.toString=function(){return'.value';};return ValueIndex;}(Index);var VALUE_INDEX=new ValueIndex();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @param {!Path} indexPath\r\n * @constructor\r\n * @extends {Index}\r\n */var PathIndex=/** @class */function(_super){tslib_1.__extends(PathIndex,_super);function PathIndex(indexPath_){var _this=_super.call(this)||this;_this.indexPath_=indexPath_;util.assert(!indexPath_.isEmpty()&&indexPath_.getFront()!=='.priority',\"Can't create PathIndex with empty path or .priority key\");return _this;}/**\r\n     * @param {!Node} snap\r\n     * @return {!Node}\r\n     * @protected\r\n     */PathIndex.prototype.extractChild=function(snap){return snap.getChild(this.indexPath_);};/**\r\n     * @inheritDoc\r\n     */PathIndex.prototype.isDefinedOn=function(node){return!node.getChild(this.indexPath_).isEmpty();};/**\r\n     * @inheritDoc\r\n     */PathIndex.prototype.compare=function(a,b){var aChild=this.extractChild(a.node);var bChild=this.extractChild(b.node);var indexCmp=aChild.compareTo(bChild);if(indexCmp===0){return nameCompare(a.name,b.name);}else{return indexCmp;}};/**\r\n     * @inheritDoc\r\n     */PathIndex.prototype.makePost=function(indexValue,name){var valueNode=nodeFromJSON$1(indexValue);var node=ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_,valueNode);return new NamedNode(name,node);};/**\r\n     * @inheritDoc\r\n     */PathIndex.prototype.maxPost=function(){var node=ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_,MAX_NODE$2);return new NamedNode(MAX_NAME,node);};/**\r\n     * @inheritDoc\r\n     */PathIndex.prototype.toString=function(){return this.indexPath_.slice().join('/');};return PathIndex;}(Index);/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Class representing a firebase data snapshot.  It wraps a SnapshotNode and\r\n * surfaces the public methods (val, forEach, etc.) we want to expose.\r\n */var DataSnapshot=/** @class */function(){/**\r\n     * @param {!Node} node_ A SnapshotNode to wrap.\r\n     * @param {!Reference} ref_ The ref of the location this snapshot came from.\r\n     * @param {!Index} index_ The iteration order for this snapshot\r\n     */function DataSnapshot(node_,ref_,index_){this.node_=node_;this.ref_=ref_;this.index_=index_;}/**\r\n     * Retrieves the snapshot contents as JSON.  Returns null if the snapshot is\r\n     * empty.\r\n     *\r\n     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.\r\n     */DataSnapshot.prototype.val=function(){util.validateArgCount('DataSnapshot.val',0,0,arguments.length);return this.node_.val();};/**\r\n     * Returns the snapshot contents as JSON, including priorities of node.  Suitable for exporting\r\n     * the entire node contents.\r\n     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.\r\n     */DataSnapshot.prototype.exportVal=function(){util.validateArgCount('DataSnapshot.exportVal',0,0,arguments.length);return this.node_.val(true);};// Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary\n// for end-users\nDataSnapshot.prototype.toJSON=function(){// Optional spacer argument is unnecessary because we're depending on recursion rather than stringifying the content\nutil.validateArgCount('DataSnapshot.toJSON',0,1,arguments.length);return this.exportVal();};/**\r\n     * Returns whether the snapshot contains a non-null value.\r\n     *\r\n     * @return {boolean} Whether the snapshot contains a non-null value, or is empty.\r\n     */DataSnapshot.prototype.exists=function(){util.validateArgCount('DataSnapshot.exists',0,0,arguments.length);return!this.node_.isEmpty();};/**\r\n     * Returns a DataSnapshot of the specified child node's contents.\r\n     *\r\n     * @param {!string} childPathString Path to a child.\r\n     * @return {!DataSnapshot} DataSnapshot for child node.\r\n     */DataSnapshot.prototype.child=function(childPathString){util.validateArgCount('DataSnapshot.child',0,1,arguments.length);// Ensure the childPath is a string (can be a number)\nchildPathString=String(childPathString);validatePathString('DataSnapshot.child',1,childPathString,false);var childPath=new Path(childPathString);var childRef=this.ref_.child(childPath);return new DataSnapshot(this.node_.getChild(childPath),childRef,PRIORITY_INDEX);};/**\r\n     * Returns whether the snapshot contains a child at the specified path.\r\n     *\r\n     * @param {!string} childPathString Path to a child.\r\n     * @return {boolean} Whether the child exists.\r\n     */DataSnapshot.prototype.hasChild=function(childPathString){util.validateArgCount('DataSnapshot.hasChild',1,1,arguments.length);validatePathString('DataSnapshot.hasChild',1,childPathString,false);var childPath=new Path(childPathString);return!this.node_.getChild(childPath).isEmpty();};/**\r\n     * Returns the priority of the object, or null if no priority was set.\r\n     *\r\n     * @return {string|number|null} The priority.\r\n     */DataSnapshot.prototype.getPriority=function(){util.validateArgCount('DataSnapshot.getPriority',0,0,arguments.length);// typecast here because we never return deferred values or internal priorities (MAX_PRIORITY)\nreturn this.node_.getPriority().val();};/**\r\n     * Iterates through child nodes and calls the specified action for each one.\r\n     *\r\n     * @param {function(!DataSnapshot)} action Callback function to be called\r\n     * for each child.\r\n     * @return {boolean} True if forEach was canceled by action returning true for\r\n     * one of the child nodes.\r\n     */DataSnapshot.prototype.forEach=function(action){var _this=this;util.validateArgCount('DataSnapshot.forEach',1,1,arguments.length);util.validateCallback('DataSnapshot.forEach',1,action,false);if(this.node_.isLeafNode())return false;var childrenNode=this.node_;// Sanitize the return value to a boolean. ChildrenNode.forEachChild has a weird return type...\nreturn!!childrenNode.forEachChild(this.index_,function(key,node){return action(new DataSnapshot(node,_this.ref_.child(key),PRIORITY_INDEX));});};/**\r\n     * Returns whether this DataSnapshot has children.\r\n     * @return {boolean} True if the DataSnapshot contains 1 or more child nodes.\r\n     */DataSnapshot.prototype.hasChildren=function(){util.validateArgCount('DataSnapshot.hasChildren',0,0,arguments.length);if(this.node_.isLeafNode())return false;else return!this.node_.isEmpty();};Object.defineProperty(DataSnapshot.prototype,\"key\",{get:function get(){return this.ref_.getKey();},enumerable:true,configurable:true});/**\r\n     * Returns the number of children for this DataSnapshot.\r\n     * @return {number} The number of children that this DataSnapshot contains.\r\n     */DataSnapshot.prototype.numChildren=function(){util.validateArgCount('DataSnapshot.numChildren',0,0,arguments.length);return this.node_.numChildren();};/**\r\n     * @return {Reference} The Firebase reference for the location this snapshot's data came from.\r\n     */DataSnapshot.prototype.getRef=function(){util.validateArgCount('DataSnapshot.ref',0,0,arguments.length);return this.ref_;};Object.defineProperty(DataSnapshot.prototype,\"ref\",{get:function get(){return this.getRef();},enumerable:true,configurable:true});return DataSnapshot;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Encapsulates the data needed to raise an event\r\n * @implements {Event}\r\n */var DataEvent=/** @class */function(){/**\r\n     * @param {!string} eventType One of: value, child_added, child_changed, child_moved, child_removed\r\n     * @param {!EventRegistration} eventRegistration The function to call to with the event data. User provided\r\n     * @param {!DataSnapshot} snapshot The data backing the event\r\n     * @param {?string=} prevName Optional, the name of the previous child for child_* events.\r\n     */function DataEvent(eventType,eventRegistration,snapshot,prevName){this.eventType=eventType;this.eventRegistration=eventRegistration;this.snapshot=snapshot;this.prevName=prevName;}/**\r\n     * @inheritDoc\r\n     */DataEvent.prototype.getPath=function(){var ref=this.snapshot.getRef();if(this.eventType==='value'){return ref.path;}else{return ref.getParent().path;}};/**\r\n     * @inheritDoc\r\n     */DataEvent.prototype.getEventType=function(){return this.eventType;};/**\r\n     * @inheritDoc\r\n     */DataEvent.prototype.getEventRunner=function(){return this.eventRegistration.getEventRunner(this);};/**\r\n     * @inheritDoc\r\n     */DataEvent.prototype.toString=function(){return this.getPath().toString()+':'+this.eventType+':'+util.stringify(this.snapshot.exportVal());};return DataEvent;}();var CancelEvent=/** @class */function(){/**\r\n     * @param {EventRegistration} eventRegistration\r\n     * @param {Error} error\r\n     * @param {!Path} path\r\n     */function CancelEvent(eventRegistration,error,path){this.eventRegistration=eventRegistration;this.error=error;this.path=path;}/**\r\n     * @inheritDoc\r\n     */CancelEvent.prototype.getPath=function(){return this.path;};/**\r\n     * @inheritDoc\r\n     */CancelEvent.prototype.getEventType=function(){return'cancel';};/**\r\n     * @inheritDoc\r\n     */CancelEvent.prototype.getEventRunner=function(){return this.eventRegistration.getEventRunner(this);};/**\r\n     * @inheritDoc\r\n     */CancelEvent.prototype.toString=function(){return this.path.toString()+':cancel';};return CancelEvent;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Represents registration for 'value' events.\r\n */var ValueEventRegistration=/** @class */function(){/**\r\n     * @param {?function(!DataSnapshot)} callback_\r\n     * @param {?function(Error)} cancelCallback_\r\n     * @param {?Object} context_\r\n     */function ValueEventRegistration(callback_,cancelCallback_,context_){this.callback_=callback_;this.cancelCallback_=cancelCallback_;this.context_=context_;}/**\r\n     * @inheritDoc\r\n     */ValueEventRegistration.prototype.respondsTo=function(eventType){return eventType==='value';};/**\r\n     * @inheritDoc\r\n     */ValueEventRegistration.prototype.createEvent=function(change,query){var index=query.getQueryParams().getIndex();return new DataEvent('value',this,new DataSnapshot(change.snapshotNode,query.getRef(),index));};/**\r\n     * @inheritDoc\r\n     */ValueEventRegistration.prototype.getEventRunner=function(eventData){var ctx=this.context_;if(eventData.getEventType()==='cancel'){util.assert(this.cancelCallback_,'Raising a cancel event on a listener with no cancel callback');var cancelCB_1=this.cancelCallback_;return function(){// We know that error exists, we checked above that this is a cancel event\ncancelCB_1.call(ctx,eventData.error);};}else{var cb_1=this.callback_;return function(){cb_1.call(ctx,eventData.snapshot);};}};/**\r\n     * @inheritDoc\r\n     */ValueEventRegistration.prototype.createCancelEvent=function(error,path){if(this.cancelCallback_){return new CancelEvent(this,error,path);}else{return null;}};/**\r\n     * @inheritDoc\r\n     */ValueEventRegistration.prototype.matches=function(other){if(!(other instanceof ValueEventRegistration)){return false;}else if(!other.callback_||!this.callback_){// If no callback specified, we consider it to match any callback.\nreturn true;}else{return other.callback_===this.callback_&&other.context_===this.context_;}};/**\r\n     * @inheritDoc\r\n     */ValueEventRegistration.prototype.hasAnyCallback=function(){return this.callback_!==null;};return ValueEventRegistration;}();/**\r\n * Represents the registration of 1 or more child_xxx events.\r\n *\r\n * Currently, it is always exactly 1 child_xxx event, but the idea is we might let you\r\n * register a group of callbacks together in the future.\r\n *\r\n * @constructor\r\n * @implements {EventRegistration}\r\n */var ChildEventRegistration=/** @class */function(){/**\r\n     * @param {?Object.<string, function(!DataSnapshot, ?string=)>} callbacks_\r\n     * @param {?function(Error)} cancelCallback_\r\n     * @param {Object=} context_\r\n     */function ChildEventRegistration(callbacks_,cancelCallback_,context_){this.callbacks_=callbacks_;this.cancelCallback_=cancelCallback_;this.context_=context_;}/**\r\n     * @inheritDoc\r\n     */ChildEventRegistration.prototype.respondsTo=function(eventType){var eventToCheck=eventType==='children_added'?'child_added':eventType;eventToCheck=eventToCheck==='children_removed'?'child_removed':eventToCheck;return util.contains(this.callbacks_,eventToCheck);};/**\r\n     * @inheritDoc\r\n     */ChildEventRegistration.prototype.createCancelEvent=function(error,path){if(this.cancelCallback_){return new CancelEvent(this,error,path);}else{return null;}};/**\r\n     * @inheritDoc\r\n     */ChildEventRegistration.prototype.createEvent=function(change,query){util.assert(change.childName!=null,'Child events should have a childName.');var ref=query.getRef().child(/** @type {!string} */change.childName);var index=query.getQueryParams().getIndex();return new DataEvent(change.type,this,new DataSnapshot(change.snapshotNode,ref,index),change.prevName);};/**\r\n     * @inheritDoc\r\n     */ChildEventRegistration.prototype.getEventRunner=function(eventData){var ctx=this.context_;if(eventData.getEventType()==='cancel'){util.assert(this.cancelCallback_,'Raising a cancel event on a listener with no cancel callback');var cancelCB_2=this.cancelCallback_;return function(){// We know that error exists, we checked above that this is a cancel event\ncancelCB_2.call(ctx,eventData.error);};}else{var cb_2=this.callbacks_[eventData.eventType];return function(){cb_2.call(ctx,eventData.snapshot,eventData.prevName);};}};/**\r\n     * @inheritDoc\r\n     */ChildEventRegistration.prototype.matches=function(other){if(other instanceof ChildEventRegistration){if(!this.callbacks_||!other.callbacks_){return true;}else if(this.context_===other.context_){var otherCount=util.getCount(other.callbacks_);var thisCount=util.getCount(this.callbacks_);if(otherCount===thisCount){// If count is 1, do an exact match on eventType, if either is defined but null, it's a match.\n//  If event types don't match, not a match\n// If count is not 1, exact match across all\nif(otherCount===1){var otherKey/** @type {!string} */=util.getAnyKey(other.callbacks_);var thisKey/** @type {!string} */=util.getAnyKey(this.callbacks_);return thisKey===otherKey&&(!other.callbacks_[otherKey]||!this.callbacks_[thisKey]||other.callbacks_[otherKey]===this.callbacks_[thisKey]);}else{// Exact match on each key.\nreturn util.every(this.callbacks_,function(eventType,cb){return other.callbacks_[eventType]===cb;});}}}}return false;};/**\r\n     * @inheritDoc\r\n     */ChildEventRegistration.prototype.hasAnyCallback=function(){return this.callbacks_!==null;};return ChildEventRegistration;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var __referenceConstructor;/**\r\n * A Query represents a filter to be applied to a firebase location.  This object purely represents the\r\n * query expression (and exposes our public API to build the query).  The actual query logic is in ViewBase.js.\r\n *\r\n * Since every Firebase reference is a query, Firebase inherits from this object.\r\n */var Query=/** @class */function(){function Query(repo,path,queryParams_,orderByCalled_){this.repo=repo;this.path=path;this.queryParams_=queryParams_;this.orderByCalled_=orderByCalled_;}Object.defineProperty(Query,\"__referenceConstructor\",{get:function get(){util.assert(__referenceConstructor,'Reference.ts has not been loaded');return __referenceConstructor;},set:function set(val){__referenceConstructor=val;},enumerable:true,configurable:true});/**\r\n     * Validates start/end values for queries.\r\n     * @param {!QueryParams} params\r\n     * @private\r\n     */Query.validateQueryEndpoints_=function(params){var startNode=null;var endNode=null;if(params.hasStart()){startNode=params.getIndexStartValue();}if(params.hasEnd()){endNode=params.getIndexEndValue();}if(params.getIndex()===KEY_INDEX){var tooManyArgsError='Query: When ordering by key, you may only pass one argument to '+'startAt(), endAt(), or equalTo().';var wrongArgTypeError='Query: When ordering by key, the argument passed to startAt(), endAt(),'+'or equalTo() must be a string.';if(params.hasStart()){var startName=params.getIndexStartName();if(startName!=MIN_NAME){throw new Error(tooManyArgsError);}else if(typeof startNode!=='string'){throw new Error(wrongArgTypeError);}}if(params.hasEnd()){var endName=params.getIndexEndName();if(endName!=MAX_NAME){throw new Error(tooManyArgsError);}else if(typeof endNode!=='string'){throw new Error(wrongArgTypeError);}}}else if(params.getIndex()===PRIORITY_INDEX){if(startNode!=null&&!isValidPriority(startNode)||endNode!=null&&!isValidPriority(endNode)){throw new Error('Query: When ordering by priority, the first argument passed to startAt(), '+'endAt(), or equalTo() must be a valid priority value (null, a number, or a string).');}}else{util.assert(params.getIndex()instanceof PathIndex||params.getIndex()===VALUE_INDEX,'unknown index type.');if(startNode!=null&&typeof startNode==='object'||endNode!=null&&typeof endNode==='object'){throw new Error('Query: First argument passed to startAt(), endAt(), or equalTo() cannot be '+'an object.');}}};/**\r\n     * Validates that limit* has been called with the correct combination of parameters\r\n     * @param {!QueryParams} params\r\n     * @private\r\n     */Query.validateLimit_=function(params){if(params.hasStart()&&params.hasEnd()&&params.hasLimit()&&!params.hasAnchoredLimit()){throw new Error(\"Query: Can't combine startAt(), endAt(), and limit(). Use limitToFirst() or limitToLast() instead.\");}};/**\r\n     * Validates that no other order by call has been made\r\n     * @param {!string} fnName\r\n     * @private\r\n     */Query.prototype.validateNoPreviousOrderByCall_=function(fnName){if(this.orderByCalled_===true){throw new Error(fnName+\": You can't combine multiple orderBy calls.\");}};/**\r\n     * @return {!QueryParams}\r\n     */Query.prototype.getQueryParams=function(){return this.queryParams_;};/**\r\n     * @return {!Reference}\r\n     */Query.prototype.getRef=function(){util.validateArgCount('Query.ref',0,0,arguments.length);// This is a slight hack. We cannot goog.require('fb.api.Firebase'), since Firebase requires fb.api.Query.\n// However, we will always export 'Firebase' to the global namespace, so it's guaranteed to exist by the time this\n// method gets called.\nreturn new Query.__referenceConstructor(this.repo,this.path);};/**\r\n     * @param {!string} eventType\r\n     * @param {!function(DataSnapshot, string=)} callback\r\n     * @param {(function(Error)|Object)=} cancelCallbackOrContext\r\n     * @param {Object=} context\r\n     * @return {!function(DataSnapshot, string=)}\r\n     */Query.prototype.on=function(eventType,callback,cancelCallbackOrContext,context){util.validateArgCount('Query.on',2,4,arguments.length);validateEventType('Query.on',1,eventType,false);util.validateCallback('Query.on',2,callback,false);var ret=Query.getCancelAndContextArgs_('Query.on',cancelCallbackOrContext,context);if(eventType==='value'){this.onValueEvent(callback,ret.cancel,ret.context);}else{var callbacks={};callbacks[eventType]=callback;this.onChildEvent(callbacks,ret.cancel,ret.context);}return callback;};/**\r\n     * @param {!function(!DataSnapshot)} callback\r\n     * @param {?function(Error)} cancelCallback\r\n     * @param {?Object} context\r\n     * @protected\r\n     */Query.prototype.onValueEvent=function(callback,cancelCallback,context){var container=new ValueEventRegistration(callback,cancelCallback||null,context||null);this.repo.addEventCallbackForQuery(this,container);};/**\r\n     * @param {!Object.<string, !function(!DataSnapshot, ?string)>} callbacks\r\n     * @param {?function(Error)} cancelCallback\r\n     * @param {?Object} context\r\n     * @protected\r\n     */Query.prototype.onChildEvent=function(callbacks,cancelCallback,context){var container=new ChildEventRegistration(callbacks,cancelCallback,context);this.repo.addEventCallbackForQuery(this,container);};/**\r\n     * @param {string=} eventType\r\n     * @param {(function(!DataSnapshot, ?string=))=} callback\r\n     * @param {Object=} context\r\n     */Query.prototype.off=function(eventType,callback,context){util.validateArgCount('Query.off',0,3,arguments.length);validateEventType('Query.off',1,eventType,true);util.validateCallback('Query.off',2,callback,true);util.validateContextObject('Query.off',3,context,true);var container=null;var callbacks=null;if(eventType==='value'){var valueCallback=callback||null;container=new ValueEventRegistration(valueCallback,null,context||null);}else if(eventType){if(callback){callbacks={};callbacks[eventType]=callback;}container=new ChildEventRegistration(callbacks,null,context||null);}this.repo.removeEventCallbackForQuery(this,container);};/**\r\n     * Attaches a listener, waits for the first event, and then removes the listener\r\n     * @param {!string} eventType\r\n     * @param {!function(!DataSnapshot, string=)} userCallback\r\n     * @param cancelOrContext\r\n     * @param context\r\n     * @return {!firebase.Promise}\r\n     */Query.prototype.once=function(eventType,userCallback,cancelOrContext,context){var _this=this;util.validateArgCount('Query.once',1,4,arguments.length);validateEventType('Query.once',1,eventType,false);util.validateCallback('Query.once',2,userCallback,true);var ret=Query.getCancelAndContextArgs_('Query.once',cancelOrContext,context);// TODO: Implement this more efficiently (in particular, use 'get' wire protocol for 'value' event)\n// TODO: consider actually wiring the callbacks into the promise. We cannot do this without a breaking change\n// because the API currently expects callbacks will be called synchronously if the data is cached, but this is\n// against the Promise specification.\nvar firstCall=true;var deferred=new util.Deferred();// A dummy error handler in case a user wasn't expecting promises\ndeferred.promise.catch(function(){});var onceCallback=function onceCallback(snapshot){// NOTE: Even though we unsubscribe, we may get called multiple times if a single action (e.g. set() with JSON)\n// triggers multiple events (e.g. child_added or child_changed).\nif(firstCall){firstCall=false;_this.off(eventType,onceCallback);if(userCallback){userCallback.bind(ret.context)(snapshot);}deferred.resolve(snapshot);}};this.on(eventType,onceCallback,/*cancel=*/function(err){_this.off(eventType,onceCallback);if(ret.cancel)ret.cancel.bind(ret.context)(err);deferred.reject(err);});return deferred.promise;};/**\r\n     * Set a limit and anchor it to the start of the window.\r\n     * @param {!number} limit\r\n     * @return {!Query}\r\n     */Query.prototype.limitToFirst=function(limit){util.validateArgCount('Query.limitToFirst',1,1,arguments.length);if(typeof limit!=='number'||Math.floor(limit)!==limit||limit<=0){throw new Error('Query.limitToFirst: First argument must be a positive integer.');}if(this.queryParams_.hasLimit()){throw new Error('Query.limitToFirst: Limit was already set (by another call to limit, '+'limitToFirst, or limitToLast).');}return new Query(this.repo,this.path,this.queryParams_.limitToFirst(limit),this.orderByCalled_);};/**\r\n     * Set a limit and anchor it to the end of the window.\r\n     * @param {!number} limit\r\n     * @return {!Query}\r\n     */Query.prototype.limitToLast=function(limit){util.validateArgCount('Query.limitToLast',1,1,arguments.length);if(typeof limit!=='number'||Math.floor(limit)!==limit||limit<=0){throw new Error('Query.limitToLast: First argument must be a positive integer.');}if(this.queryParams_.hasLimit()){throw new Error('Query.limitToLast: Limit was already set (by another call to limit, '+'limitToFirst, or limitToLast).');}return new Query(this.repo,this.path,this.queryParams_.limitToLast(limit),this.orderByCalled_);};/**\r\n     * Given a child path, return a new query ordered by the specified grandchild path.\r\n     * @param {!string} path\r\n     * @return {!Query}\r\n     */Query.prototype.orderByChild=function(path){util.validateArgCount('Query.orderByChild',1,1,arguments.length);if(path==='$key'){throw new Error('Query.orderByChild: \"$key\" is invalid.  Use Query.orderByKey() instead.');}else if(path==='$priority'){throw new Error('Query.orderByChild: \"$priority\" is invalid.  Use Query.orderByPriority() instead.');}else if(path==='$value'){throw new Error('Query.orderByChild: \"$value\" is invalid.  Use Query.orderByValue() instead.');}validatePathString('Query.orderByChild',1,path,false);this.validateNoPreviousOrderByCall_('Query.orderByChild');var parsedPath=new Path(path);if(parsedPath.isEmpty()){throw new Error('Query.orderByChild: cannot pass in empty path.  Use Query.orderByValue() instead.');}var index=new PathIndex(parsedPath);var newParams=this.queryParams_.orderBy(index);Query.validateQueryEndpoints_(newParams);return new Query(this.repo,this.path,newParams,/*orderByCalled=*/true);};/**\r\n     * Return a new query ordered by the KeyIndex\r\n     * @return {!Query}\r\n     */Query.prototype.orderByKey=function(){util.validateArgCount('Query.orderByKey',0,0,arguments.length);this.validateNoPreviousOrderByCall_('Query.orderByKey');var newParams=this.queryParams_.orderBy(KEY_INDEX);Query.validateQueryEndpoints_(newParams);return new Query(this.repo,this.path,newParams,/*orderByCalled=*/true);};/**\r\n     * Return a new query ordered by the PriorityIndex\r\n     * @return {!Query}\r\n     */Query.prototype.orderByPriority=function(){util.validateArgCount('Query.orderByPriority',0,0,arguments.length);this.validateNoPreviousOrderByCall_('Query.orderByPriority');var newParams=this.queryParams_.orderBy(PRIORITY_INDEX);Query.validateQueryEndpoints_(newParams);return new Query(this.repo,this.path,newParams,/*orderByCalled=*/true);};/**\r\n     * Return a new query ordered by the ValueIndex\r\n     * @return {!Query}\r\n     */Query.prototype.orderByValue=function(){util.validateArgCount('Query.orderByValue',0,0,arguments.length);this.validateNoPreviousOrderByCall_('Query.orderByValue');var newParams=this.queryParams_.orderBy(VALUE_INDEX);Query.validateQueryEndpoints_(newParams);return new Query(this.repo,this.path,newParams,/*orderByCalled=*/true);};/**\r\n     * @param {number|string|boolean|null} value\r\n     * @param {?string=} name\r\n     * @return {!Query}\r\n     */Query.prototype.startAt=function(value,name){if(value===void 0){value=null;}util.validateArgCount('Query.startAt',0,2,arguments.length);validateFirebaseDataArg('Query.startAt',1,value,this.path,true);validateKey('Query.startAt',2,name,true);var newParams=this.queryParams_.startAt(value,name);Query.validateLimit_(newParams);Query.validateQueryEndpoints_(newParams);if(this.queryParams_.hasStart()){throw new Error('Query.startAt: Starting point was already set (by another call to startAt '+'or equalTo).');}// Calling with no params tells us to start at the beginning.\nif(value===undefined){value=null;name=null;}return new Query(this.repo,this.path,newParams,this.orderByCalled_);};/**\r\n     * @param {number|string|boolean|null} value\r\n     * @param {?string=} name\r\n     * @return {!Query}\r\n     */Query.prototype.endAt=function(value,name){if(value===void 0){value=null;}util.validateArgCount('Query.endAt',0,2,arguments.length);validateFirebaseDataArg('Query.endAt',1,value,this.path,true);validateKey('Query.endAt',2,name,true);var newParams=this.queryParams_.endAt(value,name);Query.validateLimit_(newParams);Query.validateQueryEndpoints_(newParams);if(this.queryParams_.hasEnd()){throw new Error('Query.endAt: Ending point was already set (by another call to endAt or '+'equalTo).');}return new Query(this.repo,this.path,newParams,this.orderByCalled_);};/**\r\n     * Load the selection of children with exactly the specified value, and, optionally,\r\n     * the specified name.\r\n     * @param {number|string|boolean|null} value\r\n     * @param {string=} name\r\n     * @return {!Query}\r\n     */Query.prototype.equalTo=function(value,name){util.validateArgCount('Query.equalTo',1,2,arguments.length);validateFirebaseDataArg('Query.equalTo',1,value,this.path,false);validateKey('Query.equalTo',2,name,true);if(this.queryParams_.hasStart()){throw new Error('Query.equalTo: Starting point was already set (by another call to startAt or '+'equalTo).');}if(this.queryParams_.hasEnd()){throw new Error('Query.equalTo: Ending point was already set (by another call to endAt or '+'equalTo).');}return this.startAt(value,name).endAt(value,name);};/**\r\n     * @return {!string} URL for this location.\r\n     */Query.prototype.toString=function(){util.validateArgCount('Query.toString',0,0,arguments.length);return this.repo.toString()+this.path.toUrlEncodedString();};// Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary\n// for end-users.\nQuery.prototype.toJSON=function(){// An optional spacer argument is unnecessary for a string.\nutil.validateArgCount('Query.toJSON',0,1,arguments.length);return this.toString();};/**\r\n     * An object representation of the query parameters used by this Query.\r\n     * @return {!Object}\r\n     */Query.prototype.queryObject=function(){return this.queryParams_.getQueryObject();};/**\r\n     * @return {!string}\r\n     */Query.prototype.queryIdentifier=function(){var obj=this.queryObject();var id=ObjectToUniqueKey(obj);return id==='{}'?'default':id;};/**\r\n     * Return true if this query and the provided query are equivalent; otherwise, return false.\r\n     * @param {Query} other\r\n     * @return {boolean}\r\n     */Query.prototype.isEqual=function(other){util.validateArgCount('Query.isEqual',1,1,arguments.length);if(!(other instanceof Query)){var error='Query.isEqual failed: First argument must be an instance of firebase.database.Query.';throw new Error(error);}var sameRepo=this.repo===other.repo;var samePath=this.path.equals(other.path);var sameQueryIdentifier=this.queryIdentifier()===other.queryIdentifier();return sameRepo&&samePath&&sameQueryIdentifier;};/**\r\n     * Helper used by .on and .once to extract the context and or cancel arguments.\r\n     * @param {!string} fnName The function name (on or once)\r\n     * @param {(function(Error)|Object)=} cancelOrContext\r\n     * @param {Object=} context\r\n     * @return {{cancel: ?function(Error), context: ?Object}}\r\n     * @private\r\n     */Query.getCancelAndContextArgs_=function(fnName,cancelOrContext,context){var ret={cancel:null,context:null};if(cancelOrContext&&context){ret.cancel=cancelOrContext;util.validateCallback(fnName,3,ret.cancel,true);ret.context=context;util.validateContextObject(fnName,4,ret.context,true);}else if(cancelOrContext){// we have either a cancel callback or a context.\nif(typeof cancelOrContext==='object'&&cancelOrContext!==null){// it's a context!\nret.context=cancelOrContext;}else if(typeof cancelOrContext==='function'){ret.cancel=cancelOrContext;}else{throw new Error(util.errorPrefix(fnName,3,true)+' must either be a cancel callback or a context object.');}}return ret;};Object.defineProperty(Query.prototype,\"ref\",{get:function get(){return this.getRef();},enumerable:true,configurable:true});return Query;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Implements a set with a count of elements.\r\n *\r\n * @template K, V\r\n */var CountedSet=/** @class */function(){function CountedSet(){this.set={};}/**\r\n     * @param {!K} item\r\n     * @param {V} val\r\n     */CountedSet.prototype.add=function(item,val){this.set[item]=val!==null?val:true;};/**\r\n     * @param {!K} key\r\n     * @return {boolean}\r\n     */CountedSet.prototype.contains=function(key){return util.contains(this.set,key);};/**\r\n     * @param {!K} item\r\n     * @return {V}\r\n     */CountedSet.prototype.get=function(item){return this.contains(item)?this.set[item]:undefined;};/**\r\n     * @param {!K} item\r\n     */CountedSet.prototype.remove=function(item){delete this.set[item];};/**\r\n     * Deletes everything in the set\r\n     */CountedSet.prototype.clear=function(){this.set={};};/**\r\n     * True if there's nothing in the set\r\n     * @return {boolean}\r\n     */CountedSet.prototype.isEmpty=function(){return util.isEmpty(this.set);};/**\r\n     * @return {number} The number of items in the set\r\n     */CountedSet.prototype.count=function(){return util.getCount(this.set);};/**\r\n     * Run a function on each k,v pair in the set\r\n     * @param {function(K, V)} fn\r\n     */CountedSet.prototype.each=function(fn){util.forEach(this.set,function(k,v){return fn(k,v);});};/**\r\n     * Mostly for debugging\r\n     * @return {Array.<K>} The keys present in this CountedSet\r\n     */CountedSet.prototype.keys=function(){var keys=[];util.forEach(this.set,function(k){keys.push(k);});return keys;};return CountedSet;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Helper class to store a sparse set of snapshots.\r\n *\r\n * @constructor\r\n */var SparseSnapshotTree=/** @class */function(){function SparseSnapshotTree(){/**\r\n         * @private\r\n         * @type {Node}\r\n         */this.value_=null;/**\r\n         * @private\r\n         * @type {CountedSet}\r\n         */this.children_=null;}/**\r\n     * Gets the node stored at the given path if one exists.\r\n     *\r\n     * @param {!Path} path Path to look up snapshot for.\r\n     * @return {?Node} The retrieved node, or null.\r\n     */SparseSnapshotTree.prototype.find=function(path){if(this.value_!=null){return this.value_.getChild(path);}else if(!path.isEmpty()&&this.children_!=null){var childKey=path.getFront();path=path.popFront();if(this.children_.contains(childKey)){var childTree=this.children_.get(childKey);return childTree.find(path);}else{return null;}}else{return null;}};/**\r\n     * Stores the given node at the specified path. If there is already a node\r\n     * at a shallower path, it merges the new data into that snapshot node.\r\n     *\r\n     * @param {!Path} path Path to look up snapshot for.\r\n     * @param {!Node} data The new data, or null.\r\n     */SparseSnapshotTree.prototype.remember=function(path,data){if(path.isEmpty()){this.value_=data;this.children_=null;}else if(this.value_!==null){this.value_=this.value_.updateChild(path,data);}else{if(this.children_==null){this.children_=new CountedSet();}var childKey=path.getFront();if(!this.children_.contains(childKey)){this.children_.add(childKey,new SparseSnapshotTree());}var child=this.children_.get(childKey);path=path.popFront();child.remember(path,data);}};/**\r\n     * Purge the data at path from the cache.\r\n     *\r\n     * @param {!Path} path Path to look up snapshot for.\r\n     * @return {boolean} True if this node should now be removed.\r\n     */SparseSnapshotTree.prototype.forget=function(path){if(path.isEmpty()){this.value_=null;this.children_=null;return true;}else{if(this.value_!==null){if(this.value_.isLeafNode()){// We're trying to forget a node that doesn't exist\nreturn false;}else{var value=this.value_;this.value_=null;var self_1=this;value.forEachChild(PRIORITY_INDEX,function(key,tree){self_1.remember(new Path(key),tree);});return this.forget(path);}}else if(this.children_!==null){var childKey=path.getFront();path=path.popFront();if(this.children_.contains(childKey)){var safeToRemove=this.children_.get(childKey).forget(path);if(safeToRemove){this.children_.remove(childKey);}}if(this.children_.isEmpty()){this.children_=null;return true;}else{return false;}}else{return true;}}};/**\r\n     * Recursively iterates through all of the stored tree and calls the\r\n     * callback on each one.\r\n     *\r\n     * @param {!Path} prefixPath Path to look up node for.\r\n     * @param {!Function} func The function to invoke for each tree.\r\n     */SparseSnapshotTree.prototype.forEachTree=function(prefixPath,func){if(this.value_!==null){func(prefixPath,this.value_);}else{this.forEachChild(function(key,tree){var path=new Path(prefixPath.toString()+'/'+key);tree.forEachTree(path,func);});}};/**\r\n     * Iterates through each immediate child and triggers the callback.\r\n     *\r\n     * @param {!Function} func The function to invoke for each child.\r\n     */SparseSnapshotTree.prototype.forEachChild=function(func){if(this.children_!==null){this.children_.each(function(key,tree){func(key,tree);});}};return SparseSnapshotTree;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Generate placeholders for deferred values.\r\n * @param {?Object} values\r\n * @return {!Object}\r\n */var generateWithValues=function generateWithValues(values){values=values||{};values['timestamp']=values['timestamp']||new Date().getTime();return values;};/**\r\n * Value to use when firing local events. When writing server values, fire\r\n * local events with an approximate value, otherwise return value as-is.\r\n * @param {(Object|string|number|boolean)} value\r\n * @param {!Object} serverValues\r\n * @return {!(string|number|boolean)}\r\n */var resolveDeferredValue=function resolveDeferredValue(value,serverValues){if(!value||typeof value!=='object'){return value;}else{util.assert('.sv'in value,'Unexpected leaf node or priority contents');return serverValues[value['.sv']];}};/**\r\n * Recursively replace all deferred values and priorities in the tree with the\r\n * specified generated replacement values.\r\n * @param {!SparseSnapshotTree} tree\r\n * @param {!Object} serverValues\r\n * @return {!SparseSnapshotTree}\r\n */var resolveDeferredValueTree=function resolveDeferredValueTree(tree,serverValues){var resolvedTree=new SparseSnapshotTree();tree.forEachTree(new Path(''),function(path,node){resolvedTree.remember(path,resolveDeferredValueSnapshot(node,serverValues));});return resolvedTree;};/**\r\n * Recursively replace all deferred values and priorities in the node with the\r\n * specified generated replacement values.  If there are no server values in the node,\r\n * it'll be returned as-is.\r\n * @param {!Node} node\r\n * @param {!Object} serverValues\r\n * @return {!Node}\r\n */var resolveDeferredValueSnapshot=function resolveDeferredValueSnapshot(node,serverValues){var rawPri=node.getPriority().val();var priority=resolveDeferredValue(rawPri,serverValues);var newNode;if(node.isLeafNode()){var leafNode=node;var value=resolveDeferredValue(leafNode.getValue(),serverValues);if(value!==leafNode.getValue()||priority!==leafNode.getPriority().val()){return new LeafNode(value,nodeFromJSON$1(priority));}else{return node;}}else{var childrenNode=node;newNode=childrenNode;if(priority!==childrenNode.getPriority().val()){newNode=newNode.updatePriority(new LeafNode(priority));}childrenNode.forEachChild(PRIORITY_INDEX,function(childName,childNode){var newChildNode=resolveDeferredValueSnapshot(childNode,serverValues);if(newChildNode!==childNode){newNode=newNode.updateImmediateChild(childName,newChildNode);}});return newNode;}};/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n *\r\n * @enum\r\n */var OperationType;(function(OperationType){OperationType[OperationType[\"OVERWRITE\"]=0]=\"OVERWRITE\";OperationType[OperationType[\"MERGE\"]=1]=\"MERGE\";OperationType[OperationType[\"ACK_USER_WRITE\"]=2]=\"ACK_USER_WRITE\";OperationType[OperationType[\"LISTEN_COMPLETE\"]=3]=\"LISTEN_COMPLETE\";})(OperationType||(OperationType={}));/**\r\n * @param {boolean} fromUser\r\n * @param {boolean} fromServer\r\n * @param {?string} queryId\r\n * @param {boolean} tagged\r\n * @constructor\r\n */var OperationSource=/** @class */function(){function OperationSource(fromUser,fromServer,queryId,tagged){this.fromUser=fromUser;this.fromServer=fromServer;this.queryId=queryId;this.tagged=tagged;util.assert(!tagged||fromServer,'Tagged queries must be from server.');}/**\r\n     * @const\r\n     * @type {!OperationSource}\r\n     */OperationSource.User=new OperationSource(/*fromUser=*/true,false,null,/*tagged=*/false);/**\r\n     * @const\r\n     * @type {!OperationSource}\r\n     */OperationSource.Server=new OperationSource(false,/*fromServer=*/true,null,/*tagged=*/false);/**\r\n     * @param {string} queryId\r\n     * @return {!OperationSource}\r\n     */OperationSource.forServerTaggedQuery=function(queryId){return new OperationSource(false,/*fromServer=*/true,queryId,/*tagged=*/true);};return OperationSource;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var AckUserWrite=/** @class */function(){/**\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!ImmutableTree<!boolean>} affectedTree A tree containing true for each affected path. Affected paths can't overlap.\r\n     * @param {!boolean} revert\r\n     */function AckUserWrite(/**@inheritDoc */path,/**@inheritDoc */affectedTree,/**@inheritDoc */revert){this.path=path;this.affectedTree=affectedTree;this.revert=revert;/** @inheritDoc */this.type=OperationType.ACK_USER_WRITE;/** @inheritDoc */this.source=OperationSource.User;}/**\r\n     * @inheritDoc\r\n     */AckUserWrite.prototype.operationForChild=function(childName){if(!this.path.isEmpty()){util.assert(this.path.getFront()===childName,'operationForChild called for unrelated child.');return new AckUserWrite(this.path.popFront(),this.affectedTree,this.revert);}else if(this.affectedTree.value!=null){util.assert(this.affectedTree.children.isEmpty(),'affectedTree should not have overlapping affected paths.');// All child locations are affected as well; just return same operation.\nreturn this;}else{var childTree=this.affectedTree.subtree(new Path(childName));return new AckUserWrite(Path.Empty,childTree,this.revert);}};return AckUserWrite;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var emptyChildrenSingleton;/**\r\n * Singleton empty children collection.\r\n *\r\n * @const\r\n * @type {!SortedMap.<string, !ImmutableTree.<?>>}\r\n */var EmptyChildren=function EmptyChildren(){if(!emptyChildrenSingleton){emptyChildrenSingleton=new SortedMap(stringCompare);}return emptyChildrenSingleton;};/**\r\n * A tree with immutable elements.\r\n */var ImmutableTree=/** @class */function(){/**\r\n     * @template T\r\n     * @param {?T} value\r\n     * @param {SortedMap.<string, !ImmutableTree.<T>>=} children\r\n     */function ImmutableTree(value,children){if(children===void 0){children=EmptyChildren();}this.value=value;this.children=children;}/**\r\n     * @template T\r\n     * @param {!Object.<string, !T>} obj\r\n     * @return {!ImmutableTree.<!T>}\r\n     */ImmutableTree.fromObject=function(obj){var tree=ImmutableTree.Empty;util.forEach(obj,function(childPath,childSnap){tree=tree.set(new Path(childPath),childSnap);});return tree;};/**\r\n     * True if the value is empty and there are no children\r\n     * @return {boolean}\r\n     */ImmutableTree.prototype.isEmpty=function(){return this.value===null&&this.children.isEmpty();};/**\r\n     * Given a path and predicate, return the first node and the path to that node\r\n     * where the predicate returns true.\r\n     *\r\n     * TODO Do a perf test -- If we're creating a bunch of {path: value:} objects\r\n     * on the way back out, it may be better to pass down a pathSoFar obj.\r\n     *\r\n     * @param {!Path} relativePath The remainder of the path\r\n     * @param {function(T):boolean} predicate The predicate to satisfy to return a\r\n     *   node\r\n     * @return {?{path:!Path, value:!T}}\r\n     */ImmutableTree.prototype.findRootMostMatchingPathAndValue=function(relativePath,predicate){if(this.value!=null&&predicate(this.value)){return{path:Path.Empty,value:this.value};}else{if(relativePath.isEmpty()){return null;}else{var front=relativePath.getFront();var child=this.children.get(front);if(child!==null){var childExistingPathAndValue=child.findRootMostMatchingPathAndValue(relativePath.popFront(),predicate);if(childExistingPathAndValue!=null){var fullPath=new Path(front).child(childExistingPathAndValue.path);return{path:fullPath,value:childExistingPathAndValue.value};}else{return null;}}else{return null;}}}};/**\r\n     * Find, if it exists, the shortest subpath of the given path that points a defined\r\n     * value in the tree\r\n     * @param {!Path} relativePath\r\n     * @return {?{path: !Path, value: !T}}\r\n     */ImmutableTree.prototype.findRootMostValueAndPath=function(relativePath){return this.findRootMostMatchingPathAndValue(relativePath,function(){return true;});};/**\r\n     * @param {!Path} relativePath\r\n     * @return {!ImmutableTree.<T>} The subtree at the given path\r\n     */ImmutableTree.prototype.subtree=function(relativePath){if(relativePath.isEmpty()){return this;}else{var front=relativePath.getFront();var childTree=this.children.get(front);if(childTree!==null){return childTree.subtree(relativePath.popFront());}else{return ImmutableTree.Empty;}}};/**\r\n     * Sets a value at the specified path.\r\n     *\r\n     * @param {!Path} relativePath Path to set value at.\r\n     * @param {?T} toSet Value to set.\r\n     * @return {!ImmutableTree.<T>} Resulting tree.\r\n     */ImmutableTree.prototype.set=function(relativePath,toSet){if(relativePath.isEmpty()){return new ImmutableTree(toSet,this.children);}else{var front=relativePath.getFront();var child=this.children.get(front)||ImmutableTree.Empty;var newChild=child.set(relativePath.popFront(),toSet);var newChildren=this.children.insert(front,newChild);return new ImmutableTree(this.value,newChildren);}};/**\r\n     * Removes the value at the specified path.\r\n     *\r\n     * @param {!Path} relativePath Path to value to remove.\r\n     * @return {!ImmutableTree.<T>} Resulting tree.\r\n     */ImmutableTree.prototype.remove=function(relativePath){if(relativePath.isEmpty()){if(this.children.isEmpty()){return ImmutableTree.Empty;}else{return new ImmutableTree(null,this.children);}}else{var front=relativePath.getFront();var child=this.children.get(front);if(child){var newChild=child.remove(relativePath.popFront());var newChildren=void 0;if(newChild.isEmpty()){newChildren=this.children.remove(front);}else{newChildren=this.children.insert(front,newChild);}if(this.value===null&&newChildren.isEmpty()){return ImmutableTree.Empty;}else{return new ImmutableTree(this.value,newChildren);}}else{return this;}}};/**\r\n     * Gets a value from the tree.\r\n     *\r\n     * @param {!Path} relativePath Path to get value for.\r\n     * @return {?T} Value at path, or null.\r\n     */ImmutableTree.prototype.get=function(relativePath){if(relativePath.isEmpty()){return this.value;}else{var front=relativePath.getFront();var child=this.children.get(front);if(child){return child.get(relativePath.popFront());}else{return null;}}};/**\r\n     * Replace the subtree at the specified path with the given new tree.\r\n     *\r\n     * @param {!Path} relativePath Path to replace subtree for.\r\n     * @param {!ImmutableTree} newTree New tree.\r\n     * @return {!ImmutableTree} Resulting tree.\r\n     */ImmutableTree.prototype.setTree=function(relativePath,newTree){if(relativePath.isEmpty()){return newTree;}else{var front=relativePath.getFront();var child=this.children.get(front)||ImmutableTree.Empty;var newChild=child.setTree(relativePath.popFront(),newTree);var newChildren=void 0;if(newChild.isEmpty()){newChildren=this.children.remove(front);}else{newChildren=this.children.insert(front,newChild);}return new ImmutableTree(this.value,newChildren);}};/**\r\n     * Performs a depth first fold on this tree. Transforms a tree into a single\r\n     * value, given a function that operates on the path to a node, an optional\r\n     * current value, and a map of child names to folded subtrees\r\n     * @template V\r\n     * @param {function(Path, ?T, Object.<string, V>):V} fn\r\n     * @return {V}\r\n     */ImmutableTree.prototype.fold=function(fn){return this.fold_(Path.Empty,fn);};/**\r\n     * Recursive helper for public-facing fold() method\r\n     * @template V\r\n     * @param {!Path} pathSoFar\r\n     * @param {function(Path, ?T, Object.<string, V>):V} fn\r\n     * @return {V}\r\n     * @private\r\n     */ImmutableTree.prototype.fold_=function(pathSoFar,fn){var accum={};this.children.inorderTraversal(function(childKey,childTree){accum[childKey]=childTree.fold_(pathSoFar.child(childKey),fn);});return fn(pathSoFar,this.value,accum);};/**\r\n     * Find the first matching value on the given path. Return the result of applying f to it.\r\n     * @template V\r\n     * @param {!Path} path\r\n     * @param {!function(!Path, !T):?V} f\r\n     * @return {?V}\r\n     */ImmutableTree.prototype.findOnPath=function(path,f){return this.findOnPath_(path,Path.Empty,f);};ImmutableTree.prototype.findOnPath_=function(pathToFollow,pathSoFar,f){var result=this.value?f(pathSoFar,this.value):false;if(result){return result;}else{if(pathToFollow.isEmpty()){return null;}else{var front=pathToFollow.getFront();var nextChild=this.children.get(front);if(nextChild){return nextChild.findOnPath_(pathToFollow.popFront(),pathSoFar.child(front),f);}else{return null;}}}};/**\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!function(!Path, !T)} f\r\n     * @returns {!ImmutableTree.<T>}\r\n     */ImmutableTree.prototype.foreachOnPath=function(path,f){return this.foreachOnPath_(path,Path.Empty,f);};ImmutableTree.prototype.foreachOnPath_=function(pathToFollow,currentRelativePath,f){if(pathToFollow.isEmpty()){return this;}else{if(this.value){f(currentRelativePath,this.value);}var front=pathToFollow.getFront();var nextChild=this.children.get(front);if(nextChild){return nextChild.foreachOnPath_(pathToFollow.popFront(),currentRelativePath.child(front),f);}else{return ImmutableTree.Empty;}}};/**\r\n     * Calls the given function for each node in the tree that has a value.\r\n     *\r\n     * @param {function(!Path, !T)} f A function to be called with\r\n     *   the path from the root of the tree to a node, and the value at that node.\r\n     *   Called in depth-first order.\r\n     */ImmutableTree.prototype.foreach=function(f){this.foreach_(Path.Empty,f);};ImmutableTree.prototype.foreach_=function(currentRelativePath,f){this.children.inorderTraversal(function(childName,childTree){childTree.foreach_(currentRelativePath.child(childName),f);});if(this.value){f(currentRelativePath,this.value);}};/**\r\n     *\r\n     * @param {function(string, !T)} f\r\n     */ImmutableTree.prototype.foreachChild=function(f){this.children.inorderTraversal(function(childName,childTree){if(childTree.value){f(childName,childTree.value);}});};ImmutableTree.Empty=new ImmutableTree(null);return ImmutableTree;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @param {!OperationSource} source\r\n * @param {!Path} path\r\n * @constructor\r\n * @implements {Operation}\r\n */var ListenComplete=/** @class */function(){function ListenComplete(source,path){this.source=source;this.path=path;/** @inheritDoc */this.type=OperationType.LISTEN_COMPLETE;}ListenComplete.prototype.operationForChild=function(childName){if(this.path.isEmpty()){return new ListenComplete(this.source,Path.Empty);}else{return new ListenComplete(this.source,this.path.popFront());}};return ListenComplete;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @param {!OperationSource} source\r\n * @param {!Path} path\r\n * @param {!Node} snap\r\n * @constructor\r\n * @implements {Operation}\r\n */var Overwrite=/** @class */function(){function Overwrite(source,path,snap){this.source=source;this.path=path;this.snap=snap;/** @inheritDoc */this.type=OperationType.OVERWRITE;}Overwrite.prototype.operationForChild=function(childName){if(this.path.isEmpty()){return new Overwrite(this.source,Path.Empty,this.snap.getImmediateChild(childName));}else{return new Overwrite(this.source,this.path.popFront(),this.snap);}};return Overwrite;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @param {!OperationSource} source\r\n * @param {!Path} path\r\n * @param {!ImmutableTree.<!Node>} children\r\n * @constructor\r\n * @implements {Operation}\r\n */var Merge=/** @class */function(){function Merge(/**@inheritDoc */source,/**@inheritDoc */path,/**@inheritDoc */children){this.source=source;this.path=path;this.children=children;/** @inheritDoc */this.type=OperationType.MERGE;}/**\r\n     * @inheritDoc\r\n     */Merge.prototype.operationForChild=function(childName){if(this.path.isEmpty()){var childTree=this.children.subtree(new Path(childName));if(childTree.isEmpty()){// This child is unaffected\nreturn null;}else if(childTree.value){// We have a snapshot for the child in question.  This becomes an overwrite of the child.\nreturn new Overwrite(this.source,Path.Empty,childTree.value);}else{// This is a merge at a deeper level\nreturn new Merge(this.source,Path.Empty,childTree);}}else{util.assert(this.path.getFront()===childName,\"Can't get a merge for a child not on the path of the operation\");return new Merge(this.source,this.path.popFront(),this.children);}};/**\r\n     * @inheritDoc\r\n     */Merge.prototype.toString=function(){return'Operation('+this.path+': '+this.source.toString()+' merge: '+this.children.toString()+')';};return Merge;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * A cache node only stores complete children. Additionally it holds a flag whether the node can be considered fully\r\n * initialized in the sense that we know at one point in time this represented a valid state of the world, e.g.\r\n * initialized with data from the server, or a complete overwrite by the client. The filtered flag also tracks\r\n * whether a node potentially had children removed due to a filter.\r\n */var CacheNode=/** @class */function(){/**\r\n     * @param {!Node} node_\r\n     * @param {boolean} fullyInitialized_\r\n     * @param {boolean} filtered_\r\n     */function CacheNode(node_,fullyInitialized_,filtered_){this.node_=node_;this.fullyInitialized_=fullyInitialized_;this.filtered_=filtered_;}/**\r\n     * Returns whether this node was fully initialized with either server data or a complete overwrite by the client\r\n     * @return {boolean}\r\n     */CacheNode.prototype.isFullyInitialized=function(){return this.fullyInitialized_;};/**\r\n     * Returns whether this node is potentially missing children due to a filter applied to the node\r\n     * @return {boolean}\r\n     */CacheNode.prototype.isFiltered=function(){return this.filtered_;};/**\r\n     * @param {!Path} path\r\n     * @return {boolean}\r\n     */CacheNode.prototype.isCompleteForPath=function(path){if(path.isEmpty()){return this.isFullyInitialized()&&!this.filtered_;}var childKey=path.getFront();return this.isCompleteForChild(childKey);};/**\r\n     * @param {!string} key\r\n     * @return {boolean}\r\n     */CacheNode.prototype.isCompleteForChild=function(key){return this.isFullyInitialized()&&!this.filtered_||this.node_.hasChild(key);};/**\r\n     * @return {!Node}\r\n     */CacheNode.prototype.getNode=function(){return this.node_;};return CacheNode;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Stores the data we have cached for a view.\r\n *\r\n * serverSnap is the cached server data, eventSnap is the cached event data (server data plus any local writes).\r\n *\r\n * @constructor\r\n */var ViewCache=/** @class */function(){/**\r\n     *\r\n     * @param {!CacheNode} eventCache_\r\n     * @param {!CacheNode} serverCache_\r\n     */function ViewCache(eventCache_,serverCache_){this.eventCache_=eventCache_;this.serverCache_=serverCache_;}/**\r\n     * @param {!Node} eventSnap\r\n     * @param {boolean} complete\r\n     * @param {boolean} filtered\r\n     * @return {!ViewCache}\r\n     */ViewCache.prototype.updateEventSnap=function(eventSnap,complete,filtered){return new ViewCache(new CacheNode(eventSnap,complete,filtered),this.serverCache_);};/**\r\n     * @param {!Node} serverSnap\r\n     * @param {boolean} complete\r\n     * @param {boolean} filtered\r\n     * @return {!ViewCache}\r\n     */ViewCache.prototype.updateServerSnap=function(serverSnap,complete,filtered){return new ViewCache(this.eventCache_,new CacheNode(serverSnap,complete,filtered));};/**\r\n     * @return {!CacheNode}\r\n     */ViewCache.prototype.getEventCache=function(){return this.eventCache_;};/**\r\n     * @return {?Node}\r\n     */ViewCache.prototype.getCompleteEventSnap=function(){return this.eventCache_.isFullyInitialized()?this.eventCache_.getNode():null;};/**\r\n     * @return {!CacheNode}\r\n     */ViewCache.prototype.getServerCache=function(){return this.serverCache_;};/**\r\n     * @return {?Node}\r\n     */ViewCache.prototype.getCompleteServerSnap=function(){return this.serverCache_.isFullyInitialized()?this.serverCache_.getNode():null;};/**\r\n     * @const\r\n     * @type {ViewCache}\r\n     */ViewCache.Empty=new ViewCache(new CacheNode(ChildrenNode.EMPTY_NODE,/*fullyInitialized=*/false,/*filtered=*/false),new CacheNode(ChildrenNode.EMPTY_NODE,/*fullyInitialized=*/false,/*filtered=*/false));return ViewCache;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @constructor\r\n * @struct\r\n * @param {!string} type The event type\r\n * @param {!Node} snapshotNode The data\r\n * @param {string=} childName The name for this child, if it's a child event\r\n * @param {Node=} oldSnap Used for intermediate processing of child changed events\r\n * @param {string=} prevName The name for the previous child, if applicable\r\n */var Change=/** @class */function(){function Change(type,snapshotNode,childName,oldSnap,prevName){this.type=type;this.snapshotNode=snapshotNode;this.childName=childName;this.oldSnap=oldSnap;this.prevName=prevName;}/**\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */Change.valueChange=function(snapshot){return new Change(Change.VALUE,snapshot);};/**\r\n     * @param {string} childKey\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */Change.childAddedChange=function(childKey,snapshot){return new Change(Change.CHILD_ADDED,snapshot,childKey);};/**\r\n     * @param {string} childKey\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */Change.childRemovedChange=function(childKey,snapshot){return new Change(Change.CHILD_REMOVED,snapshot,childKey);};/**\r\n     * @param {string} childKey\r\n     * @param {!Node} newSnapshot\r\n     * @param {!Node} oldSnapshot\r\n     * @return {!Change}\r\n     */Change.childChangedChange=function(childKey,newSnapshot,oldSnapshot){return new Change(Change.CHILD_CHANGED,newSnapshot,childKey,oldSnapshot);};/**\r\n     * @param {string} childKey\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */Change.childMovedChange=function(childKey,snapshot){return new Change(Change.CHILD_MOVED,snapshot,childKey);};//event types\n/** Event type for a child added */Change.CHILD_ADDED='child_added';/** Event type for a child removed */Change.CHILD_REMOVED='child_removed';/** Event type for a child changed */Change.CHILD_CHANGED='child_changed';/** Event type for a child moved */Change.CHILD_MOVED='child_moved';/** Event type for a value change */Change.VALUE='value';return Change;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Doesn't really filter nodes but applies an index to the node and keeps track of any changes\r\n *\r\n * @constructor\r\n * @implements {NodeFilter}\r\n * @param {!Index} index\r\n */var IndexedFilter=/** @class */function(){function IndexedFilter(index_){this.index_=index_;}IndexedFilter.prototype.updateChild=function(snap,key,newChild,affectedPath,source,optChangeAccumulator){util.assert(snap.isIndexed(this.index_),'A node must be indexed if only a child is updated');var oldChild=snap.getImmediateChild(key);// Check if anything actually changed.\nif(oldChild.getChild(affectedPath).equals(newChild.getChild(affectedPath))){// There's an edge case where a child can enter or leave the view because affectedPath was set to null.\n// In this case, affectedPath will appear null in both the old and new snapshots.  So we need\n// to avoid treating these cases as \"nothing changed.\"\nif(oldChild.isEmpty()==newChild.isEmpty()){// Nothing changed.\n// This assert should be valid, but it's expensive (can dominate perf testing) so don't actually do it.\n//assert(oldChild.equals(newChild), 'Old and new snapshots should be equal.');\nreturn snap;}}if(optChangeAccumulator!=null){if(newChild.isEmpty()){if(snap.hasChild(key)){optChangeAccumulator.trackChildChange(Change.childRemovedChange(key,oldChild));}else{util.assert(snap.isLeafNode(),'A child remove without an old child only makes sense on a leaf node');}}else if(oldChild.isEmpty()){optChangeAccumulator.trackChildChange(Change.childAddedChange(key,newChild));}else{optChangeAccumulator.trackChildChange(Change.childChangedChange(key,newChild,oldChild));}}if(snap.isLeafNode()&&newChild.isEmpty()){return snap;}else{// Make sure the node is indexed\nreturn snap.updateImmediateChild(key,newChild).withIndex(this.index_);}};/**\r\n     * @inheritDoc\r\n     */IndexedFilter.prototype.updateFullNode=function(oldSnap,newSnap,optChangeAccumulator){if(optChangeAccumulator!=null){if(!oldSnap.isLeafNode()){oldSnap.forEachChild(PRIORITY_INDEX,function(key,childNode){if(!newSnap.hasChild(key)){optChangeAccumulator.trackChildChange(Change.childRemovedChange(key,childNode));}});}if(!newSnap.isLeafNode()){newSnap.forEachChild(PRIORITY_INDEX,function(key,childNode){if(oldSnap.hasChild(key)){var oldChild=oldSnap.getImmediateChild(key);if(!oldChild.equals(childNode)){optChangeAccumulator.trackChildChange(Change.childChangedChange(key,childNode,oldChild));}}else{optChangeAccumulator.trackChildChange(Change.childAddedChange(key,childNode));}});}}return newSnap.withIndex(this.index_);};/**\r\n     * @inheritDoc\r\n     */IndexedFilter.prototype.updatePriority=function(oldSnap,newPriority){if(oldSnap.isEmpty()){return ChildrenNode.EMPTY_NODE;}else{return oldSnap.updatePriority(newPriority);}};/**\r\n     * @inheritDoc\r\n     */IndexedFilter.prototype.filtersNodes=function(){return false;};/**\r\n     * @inheritDoc\r\n     */IndexedFilter.prototype.getIndexedFilter=function(){return this;};/**\r\n     * @inheritDoc\r\n     */IndexedFilter.prototype.getIndex=function(){return this.index_;};return IndexedFilter;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @constructor\r\n */var ChildChangeAccumulator=/** @class */function(){function ChildChangeAccumulator(){this.changeMap_={};}/**\r\n     * @param {!Change} change\r\n     */ChildChangeAccumulator.prototype.trackChildChange=function(change){var type=change.type;var childKey/** @type {!string} */=change.childName;util.assert(type==Change.CHILD_ADDED||type==Change.CHILD_CHANGED||type==Change.CHILD_REMOVED,'Only child changes supported for tracking');util.assert(childKey!=='.priority','Only non-priority child changes can be tracked.');var oldChange=util.safeGet(this.changeMap_,childKey);if(oldChange){var oldType=oldChange.type;if(type==Change.CHILD_ADDED&&oldType==Change.CHILD_REMOVED){this.changeMap_[childKey]=Change.childChangedChange(childKey,change.snapshotNode,oldChange.snapshotNode);}else if(type==Change.CHILD_REMOVED&&oldType==Change.CHILD_ADDED){delete this.changeMap_[childKey];}else if(type==Change.CHILD_REMOVED&&oldType==Change.CHILD_CHANGED){this.changeMap_[childKey]=Change.childRemovedChange(childKey,oldChange.oldSnap);}else if(type==Change.CHILD_CHANGED&&oldType==Change.CHILD_ADDED){this.changeMap_[childKey]=Change.childAddedChange(childKey,change.snapshotNode);}else if(type==Change.CHILD_CHANGED&&oldType==Change.CHILD_CHANGED){this.changeMap_[childKey]=Change.childChangedChange(childKey,change.snapshotNode,oldChange.oldSnap);}else{throw util.assertionError('Illegal combination of changes: '+change+' occurred after '+oldChange);}}else{this.changeMap_[childKey]=change;}};/**\r\n     * @return {!Array.<!Change>}\r\n     */ChildChangeAccumulator.prototype.getChanges=function(){return util.getValues(this.changeMap_);};return ChildChangeAccumulator;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * An implementation of CompleteChildSource that never returns any additional children\r\n *\r\n * @private\r\n * @constructor\r\n * @implements CompleteChildSource\r\n */var NoCompleteChildSource_=/** @class */function(){function NoCompleteChildSource_(){}/**\r\n     * @inheritDoc\r\n     */NoCompleteChildSource_.prototype.getCompleteChild=function(childKey){return null;};/**\r\n     * @inheritDoc\r\n     */NoCompleteChildSource_.prototype.getChildAfterChild=function(index,child,reverse){return null;};return NoCompleteChildSource_;}();/**\r\n * Singleton instance.\r\n * @const\r\n * @type {!CompleteChildSource}\r\n */var NO_COMPLETE_CHILD_SOURCE=new NoCompleteChildSource_();/**\r\n * An implementation of CompleteChildSource that uses a WriteTree in addition to any other server data or\r\n * old event caches available to calculate complete children.\r\n *\r\n *\r\n * @implements CompleteChildSource\r\n */var WriteTreeCompleteChildSource=/** @class */function(){/**\r\n     * @param {!WriteTreeRef} writes_\r\n     * @param {!ViewCache} viewCache_\r\n     * @param {?Node} optCompleteServerCache_\r\n     */function WriteTreeCompleteChildSource(writes_,viewCache_,optCompleteServerCache_){if(optCompleteServerCache_===void 0){optCompleteServerCache_=null;}this.writes_=writes_;this.viewCache_=viewCache_;this.optCompleteServerCache_=optCompleteServerCache_;}/**\r\n     * @inheritDoc\r\n     */WriteTreeCompleteChildSource.prototype.getCompleteChild=function(childKey){var node=this.viewCache_.getEventCache();if(node.isCompleteForChild(childKey)){return node.getNode().getImmediateChild(childKey);}else{var serverNode=this.optCompleteServerCache_!=null?new CacheNode(this.optCompleteServerCache_,true,false):this.viewCache_.getServerCache();return this.writes_.calcCompleteChild(childKey,serverNode);}};/**\r\n     * @inheritDoc\r\n     */WriteTreeCompleteChildSource.prototype.getChildAfterChild=function(index,child,reverse){var completeServerData=this.optCompleteServerCache_!=null?this.optCompleteServerCache_:this.viewCache_.getCompleteServerSnap();var nodes=this.writes_.calcIndexedSlice(completeServerData,child,1,reverse,index);if(nodes.length===0){return null;}else{return nodes[0];}};return WriteTreeCompleteChildSource;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @constructor\r\n * @struct\r\n */var ProcessorResult=/** @class */function(){/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Array.<!Change>} changes\r\n     */function ProcessorResult(viewCache,changes){this.viewCache=viewCache;this.changes=changes;}return ProcessorResult;}();/**\r\n * @constructor\r\n */var ViewProcessor=/** @class */function(){/**\r\n     * @param {!NodeFilter} filter_\r\n     */function ViewProcessor(filter_){this.filter_=filter_;}/**\r\n     * @param {!ViewCache} viewCache\r\n     */ViewProcessor.prototype.assertIndexed=function(viewCache){util.assert(viewCache.getEventCache().getNode().isIndexed(this.filter_.getIndex()),'Event snap not indexed');util.assert(viewCache.getServerCache().getNode().isIndexed(this.filter_.getIndex()),'Server snap not indexed');};/**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!Operation} operation\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @return {!ProcessorResult}\r\n     */ViewProcessor.prototype.applyOperation=function(oldViewCache,operation,writesCache,completeCache){var accumulator=new ChildChangeAccumulator();var newViewCache,filterServerNode;if(operation.type===OperationType.OVERWRITE){var overwrite=operation;if(overwrite.source.fromUser){newViewCache=this.applyUserOverwrite_(oldViewCache,overwrite.path,overwrite.snap,writesCache,completeCache,accumulator);}else{util.assert(overwrite.source.fromServer,'Unknown source.');// We filter the node if it's a tagged update or the node has been previously filtered  and the\n// update is not at the root in which case it is ok (and necessary) to mark the node unfiltered\n// again\nfilterServerNode=overwrite.source.tagged||oldViewCache.getServerCache().isFiltered()&&!overwrite.path.isEmpty();newViewCache=this.applyServerOverwrite_(oldViewCache,overwrite.path,overwrite.snap,writesCache,completeCache,filterServerNode,accumulator);}}else if(operation.type===OperationType.MERGE){var merge=operation;if(merge.source.fromUser){newViewCache=this.applyUserMerge_(oldViewCache,merge.path,merge.children,writesCache,completeCache,accumulator);}else{util.assert(merge.source.fromServer,'Unknown source.');// We filter the node if it's a tagged update or the node has been previously filtered\nfilterServerNode=merge.source.tagged||oldViewCache.getServerCache().isFiltered();newViewCache=this.applyServerMerge_(oldViewCache,merge.path,merge.children,writesCache,completeCache,filterServerNode,accumulator);}}else if(operation.type===OperationType.ACK_USER_WRITE){var ackUserWrite=operation;if(!ackUserWrite.revert){newViewCache=this.ackUserWrite_(oldViewCache,ackUserWrite.path,ackUserWrite.affectedTree,writesCache,completeCache,accumulator);}else{newViewCache=this.revertUserWrite_(oldViewCache,ackUserWrite.path,writesCache,completeCache,accumulator);}}else if(operation.type===OperationType.LISTEN_COMPLETE){newViewCache=this.listenComplete_(oldViewCache,operation.path,writesCache,accumulator);}else{throw util.assertionError('Unknown operation type: '+operation.type);}var changes=accumulator.getChanges();ViewProcessor.maybeAddValueEvent_(oldViewCache,newViewCache,changes);return new ProcessorResult(newViewCache,changes);};/**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!ViewCache} newViewCache\r\n     * @param {!Array.<!Change>} accumulator\r\n     * @private\r\n     */ViewProcessor.maybeAddValueEvent_=function(oldViewCache,newViewCache,accumulator){var eventSnap=newViewCache.getEventCache();if(eventSnap.isFullyInitialized()){var isLeafOrEmpty=eventSnap.getNode().isLeafNode()||eventSnap.getNode().isEmpty();var oldCompleteSnap=oldViewCache.getCompleteEventSnap();if(accumulator.length>0||!oldViewCache.getEventCache().isFullyInitialized()||isLeafOrEmpty&&!eventSnap.getNode().equals(/** @type {!Node} */oldCompleteSnap)||!eventSnap.getNode().getPriority().equals(oldCompleteSnap.getPriority())){accumulator.push(Change.valueChange(/** @type {!Node} */newViewCache.getCompleteEventSnap()));}}};/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} changePath\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {!CompleteChildSource} source\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.generateEventCacheAfterServerEvent_=function(viewCache,changePath,writesCache,source,accumulator){var oldEventSnap=viewCache.getEventCache();if(writesCache.shadowingWrite(changePath)!=null){// we have a shadowing write, ignore changes\nreturn viewCache;}else{var newEventCache=void 0,serverNode=void 0;if(changePath.isEmpty()){// TODO: figure out how this plays with \"sliding ack windows\"\nutil.assert(viewCache.getServerCache().isFullyInitialized(),'If change path is empty, we must have complete server data');if(viewCache.getServerCache().isFiltered()){// We need to special case this, because we need to only apply writes to complete children, or\n// we might end up raising events for incomplete children. If the server data is filtered deep\n// writes cannot be guaranteed to be complete\nvar serverCache=viewCache.getCompleteServerSnap();var completeChildren=serverCache instanceof ChildrenNode?serverCache:ChildrenNode.EMPTY_NODE;var completeEventChildren=writesCache.calcCompleteEventChildren(completeChildren);newEventCache=this.filter_.updateFullNode(viewCache.getEventCache().getNode(),completeEventChildren,accumulator);}else{var completeNode=writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());newEventCache=this.filter_.updateFullNode(viewCache.getEventCache().getNode(),completeNode,accumulator);}}else{var childKey=changePath.getFront();if(childKey=='.priority'){util.assert(changePath.getLength()==1,\"Can't have a priority with additional path components\");var oldEventNode=oldEventSnap.getNode();serverNode=viewCache.getServerCache().getNode();// we might have overwrites for this priority\nvar updatedPriority=writesCache.calcEventCacheAfterServerOverwrite(changePath,oldEventNode,serverNode);if(updatedPriority!=null){newEventCache=this.filter_.updatePriority(oldEventNode,updatedPriority);}else{// priority didn't change, keep old node\nnewEventCache=oldEventSnap.getNode();}}else{var childChangePath=changePath.popFront();// update child\nvar newEventChild=void 0;if(oldEventSnap.isCompleteForChild(childKey)){serverNode=viewCache.getServerCache().getNode();var eventChildUpdate=writesCache.calcEventCacheAfterServerOverwrite(changePath,oldEventSnap.getNode(),serverNode);if(eventChildUpdate!=null){newEventChild=oldEventSnap.getNode().getImmediateChild(childKey).updateChild(childChangePath,eventChildUpdate);}else{// Nothing changed, just keep the old child\nnewEventChild=oldEventSnap.getNode().getImmediateChild(childKey);}}else{newEventChild=writesCache.calcCompleteChild(childKey,viewCache.getServerCache());}if(newEventChild!=null){newEventCache=this.filter_.updateChild(oldEventSnap.getNode(),childKey,newEventChild,childChangePath,source,accumulator);}else{// no complete child available or no change\nnewEventCache=oldEventSnap.getNode();}}}return viewCache.updateEventSnap(newEventCache,oldEventSnap.isFullyInitialized()||changePath.isEmpty(),this.filter_.filtersNodes());}};/**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!Path} changePath\r\n     * @param {!Node} changedSnap\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @param {boolean} filterServerNode\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.applyServerOverwrite_=function(oldViewCache,changePath,changedSnap,writesCache,completeCache,filterServerNode,accumulator){var oldServerSnap=oldViewCache.getServerCache();var newServerCache;var serverFilter=filterServerNode?this.filter_:this.filter_.getIndexedFilter();if(changePath.isEmpty()){newServerCache=serverFilter.updateFullNode(oldServerSnap.getNode(),changedSnap,null);}else if(serverFilter.filtersNodes()&&!oldServerSnap.isFiltered()){// we want to filter the server node, but we didn't filter the server node yet, so simulate a full update\nvar newServerNode=oldServerSnap.getNode().updateChild(changePath,changedSnap);newServerCache=serverFilter.updateFullNode(oldServerSnap.getNode(),newServerNode,null);}else{var childKey=changePath.getFront();if(!oldServerSnap.isCompleteForPath(changePath)&&changePath.getLength()>1){// We don't update incomplete nodes with updates intended for other listeners\nreturn oldViewCache;}var childChangePath=changePath.popFront();var childNode=oldServerSnap.getNode().getImmediateChild(childKey);var newChildNode=childNode.updateChild(childChangePath,changedSnap);if(childKey=='.priority'){newServerCache=serverFilter.updatePriority(oldServerSnap.getNode(),newChildNode);}else{newServerCache=serverFilter.updateChild(oldServerSnap.getNode(),childKey,newChildNode,childChangePath,NO_COMPLETE_CHILD_SOURCE,null);}}var newViewCache=oldViewCache.updateServerSnap(newServerCache,oldServerSnap.isFullyInitialized()||changePath.isEmpty(),serverFilter.filtersNodes());var source=new WriteTreeCompleteChildSource(writesCache,newViewCache,completeCache);return this.generateEventCacheAfterServerEvent_(newViewCache,changePath,writesCache,source,accumulator);};/**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!Path} changePath\r\n     * @param {!Node} changedSnap\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.applyUserOverwrite_=function(oldViewCache,changePath,changedSnap,writesCache,completeCache,accumulator){var oldEventSnap=oldViewCache.getEventCache();var newViewCache,newEventCache;var source=new WriteTreeCompleteChildSource(writesCache,oldViewCache,completeCache);if(changePath.isEmpty()){newEventCache=this.filter_.updateFullNode(oldViewCache.getEventCache().getNode(),changedSnap,accumulator);newViewCache=oldViewCache.updateEventSnap(newEventCache,true,this.filter_.filtersNodes());}else{var childKey=changePath.getFront();if(childKey==='.priority'){newEventCache=this.filter_.updatePriority(oldViewCache.getEventCache().getNode(),changedSnap);newViewCache=oldViewCache.updateEventSnap(newEventCache,oldEventSnap.isFullyInitialized(),oldEventSnap.isFiltered());}else{var childChangePath=changePath.popFront();var oldChild=oldEventSnap.getNode().getImmediateChild(childKey);var newChild=void 0;if(childChangePath.isEmpty()){// Child overwrite, we can replace the child\nnewChild=changedSnap;}else{var childNode=source.getCompleteChild(childKey);if(childNode!=null){if(childChangePath.getBack()==='.priority'&&childNode.getChild(childChangePath.parent()).isEmpty()){// This is a priority update on an empty node. If this node exists on the server, the\n// server will send down the priority in the update, so ignore for now\nnewChild=childNode;}else{newChild=childNode.updateChild(childChangePath,changedSnap);}}else{// There is no complete child node available\nnewChild=ChildrenNode.EMPTY_NODE;}}if(!oldChild.equals(newChild)){var newEventSnap=this.filter_.updateChild(oldEventSnap.getNode(),childKey,newChild,childChangePath,source,accumulator);newViewCache=oldViewCache.updateEventSnap(newEventSnap,oldEventSnap.isFullyInitialized(),this.filter_.filtersNodes());}else{newViewCache=oldViewCache;}}}return newViewCache;};/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {string} childKey\r\n     * @return {boolean}\r\n     * @private\r\n     */ViewProcessor.cacheHasChild_=function(viewCache,childKey){return viewCache.getEventCache().isCompleteForChild(childKey);};/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {ImmutableTree.<!Node>} changedChildren\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} serverCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.applyUserMerge_=function(viewCache,path,changedChildren,writesCache,serverCache,accumulator){var _this=this;// HACK: In the case of a limit query, there may be some changes that bump things out of the\n// window leaving room for new items.  It's important we process these changes first, so we\n// iterate the changes twice, first processing any that affect items currently in view.\n// TODO: I consider an item \"in view\" if cacheHasChild is true, which checks both the server\n// and event snap.  I'm not sure if this will result in edge cases when a child is in one but\n// not the other.\nvar curViewCache=viewCache;changedChildren.foreach(function(relativePath,childNode){var writePath=path.child(relativePath);if(ViewProcessor.cacheHasChild_(viewCache,writePath.getFront())){curViewCache=_this.applyUserOverwrite_(curViewCache,writePath,childNode,writesCache,serverCache,accumulator);}});changedChildren.foreach(function(relativePath,childNode){var writePath=path.child(relativePath);if(!ViewProcessor.cacheHasChild_(viewCache,writePath.getFront())){curViewCache=_this.applyUserOverwrite_(curViewCache,writePath,childNode,writesCache,serverCache,accumulator);}});return curViewCache;};/**\r\n     * @param {!Node} node\r\n     * @param {ImmutableTree.<!Node>} merge\r\n     * @return {!Node}\r\n     * @private\r\n     */ViewProcessor.prototype.applyMerge_=function(node,merge){merge.foreach(function(relativePath,childNode){node=node.updateChild(relativePath,childNode);});return node;};/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {!ImmutableTree.<!Node>} changedChildren\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} serverCache\r\n     * @param {boolean} filterServerNode\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.applyServerMerge_=function(viewCache,path,changedChildren,writesCache,serverCache,filterServerNode,accumulator){var _this=this;// If we don't have a cache yet, this merge was intended for a previously listen in the same location. Ignore it and\n// wait for the complete data update coming soon.\nif(viewCache.getServerCache().getNode().isEmpty()&&!viewCache.getServerCache().isFullyInitialized()){return viewCache;}// HACK: In the case of a limit query, there may be some changes that bump things out of the\n// window leaving room for new items.  It's important we process these changes first, so we\n// iterate the changes twice, first processing any that affect items currently in view.\n// TODO: I consider an item \"in view\" if cacheHasChild is true, which checks both the server\n// and event snap.  I'm not sure if this will result in edge cases when a child is in one but\n// not the other.\nvar curViewCache=viewCache;var viewMergeTree;if(path.isEmpty()){viewMergeTree=changedChildren;}else{viewMergeTree=ImmutableTree.Empty.setTree(path,changedChildren);}var serverNode=viewCache.getServerCache().getNode();viewMergeTree.children.inorderTraversal(function(childKey,childTree){if(serverNode.hasChild(childKey)){var serverChild=viewCache.getServerCache().getNode().getImmediateChild(childKey);var newChild=_this.applyMerge_(serverChild,childTree);curViewCache=_this.applyServerOverwrite_(curViewCache,new Path(childKey),newChild,writesCache,serverCache,filterServerNode,accumulator);}});viewMergeTree.children.inorderTraversal(function(childKey,childMergeTree){var isUnknownDeepMerge=!viewCache.getServerCache().isCompleteForChild(childKey)&&childMergeTree.value==null;if(!serverNode.hasChild(childKey)&&!isUnknownDeepMerge){var serverChild=viewCache.getServerCache().getNode().getImmediateChild(childKey);var newChild=_this.applyMerge_(serverChild,childMergeTree);curViewCache=_this.applyServerOverwrite_(curViewCache,new Path(childKey),newChild,writesCache,serverCache,filterServerNode,accumulator);}});return curViewCache;};/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} ackPath\r\n     * @param {!ImmutableTree<!boolean>} affectedTree\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.ackUserWrite_=function(viewCache,ackPath,affectedTree,writesCache,completeCache,accumulator){if(writesCache.shadowingWrite(ackPath)!=null){return viewCache;}// Only filter server node if it is currently filtered\nvar filterServerNode=viewCache.getServerCache().isFiltered();// Essentially we'll just get our existing server cache for the affected paths and re-apply it as a server update\n// now that it won't be shadowed.\nvar serverCache=viewCache.getServerCache();if(affectedTree.value!=null){// This is an overwrite.\nif(ackPath.isEmpty()&&serverCache.isFullyInitialized()||serverCache.isCompleteForPath(ackPath)){return this.applyServerOverwrite_(viewCache,ackPath,serverCache.getNode().getChild(ackPath),writesCache,completeCache,filterServerNode,accumulator);}else if(ackPath.isEmpty()){// This is a goofy edge case where we are acking data at this location but don't have full data.  We\n// should just re-apply whatever we have in our cache as a merge.\nvar changedChildren_1=ImmutableTree.Empty;serverCache.getNode().forEachChild(KEY_INDEX,function(name,node){changedChildren_1=changedChildren_1.set(new Path(name),node);});return this.applyServerMerge_(viewCache,ackPath,changedChildren_1,writesCache,completeCache,filterServerNode,accumulator);}else{return viewCache;}}else{// This is a merge.\nvar changedChildren_2=ImmutableTree.Empty;affectedTree.foreach(function(mergePath,value){var serverCachePath=ackPath.child(mergePath);if(serverCache.isCompleteForPath(serverCachePath)){changedChildren_2=changedChildren_2.set(mergePath,serverCache.getNode().getChild(serverCachePath));}});return this.applyServerMerge_(viewCache,ackPath,changedChildren_2,writesCache,completeCache,filterServerNode,accumulator);}};/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.listenComplete_=function(viewCache,path,writesCache,accumulator){var oldServerNode=viewCache.getServerCache();var newViewCache=viewCache.updateServerSnap(oldServerNode.getNode(),oldServerNode.isFullyInitialized()||path.isEmpty(),oldServerNode.isFiltered());return this.generateEventCacheAfterServerEvent_(newViewCache,path,writesCache,NO_COMPLETE_CHILD_SOURCE,accumulator);};/**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeServerCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */ViewProcessor.prototype.revertUserWrite_=function(viewCache,path,writesCache,completeServerCache,accumulator){var complete;if(writesCache.shadowingWrite(path)!=null){return viewCache;}else{var source=new WriteTreeCompleteChildSource(writesCache,viewCache,completeServerCache);var oldEventCache=viewCache.getEventCache().getNode();var newEventCache=void 0;if(path.isEmpty()||path.getFront()==='.priority'){var newNode=void 0;if(viewCache.getServerCache().isFullyInitialized()){newNode=writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());}else{var serverChildren=viewCache.getServerCache().getNode();util.assert(serverChildren instanceof ChildrenNode,'serverChildren would be complete if leaf node');newNode=writesCache.calcCompleteEventChildren(serverChildren);}newNode=newNode;newEventCache=this.filter_.updateFullNode(oldEventCache,newNode,accumulator);}else{var childKey=path.getFront();var newChild=writesCache.calcCompleteChild(childKey,viewCache.getServerCache());if(newChild==null&&viewCache.getServerCache().isCompleteForChild(childKey)){newChild=oldEventCache.getImmediateChild(childKey);}if(newChild!=null){newEventCache=this.filter_.updateChild(oldEventCache,childKey,newChild,path.popFront(),source,accumulator);}else if(viewCache.getEventCache().getNode().hasChild(childKey)){// No complete child available, delete the existing one, if any\nnewEventCache=this.filter_.updateChild(oldEventCache,childKey,ChildrenNode.EMPTY_NODE,path.popFront(),source,accumulator);}else{newEventCache=oldEventCache;}if(newEventCache.isEmpty()&&viewCache.getServerCache().isFullyInitialized()){// We might have reverted all child writes. Maybe the old event was a leaf node\ncomplete=writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());if(complete.isLeafNode()){newEventCache=this.filter_.updateFullNode(newEventCache,complete,accumulator);}}}complete=viewCache.getServerCache().isFullyInitialized()||writesCache.shadowingWrite(Path.Empty)!=null;return viewCache.updateEventSnap(newEventCache,complete,this.filter_.filtersNodes());}};return ViewProcessor;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * An EventGenerator is used to convert \"raw\" changes (Change) as computed by the\r\n * CacheDiffer into actual events (Event) that can be raised.  See generateEventsForChanges()\r\n * for details.\r\n *\r\n * @constructor\r\n */var EventGenerator=/** @class */function(){/**\r\n     *\r\n     * @param {!Query} query_\r\n     */function EventGenerator(query_){this.query_=query_;/**\r\n         * @private\r\n         * @type {!Index}\r\n         */this.index_=this.query_.getQueryParams().getIndex();}/**\r\n     * Given a set of raw changes (no moved events and prevName not specified yet), and a set of\r\n     * EventRegistrations that should be notified of these changes, generate the actual events to be raised.\r\n     *\r\n     * Notes:\r\n     *  - child_moved events will be synthesized at this time for any child_changed events that affect\r\n     *    our index.\r\n     *  - prevName will be calculated based on the index ordering.\r\n     *\r\n     * @param {!Array.<!Change>} changes\r\n     * @param {!Node} eventCache\r\n     * @param {!Array.<!EventRegistration>} eventRegistrations\r\n     * @return {!Array.<!Event>}\r\n     */EventGenerator.prototype.generateEventsForChanges=function(changes,eventCache,eventRegistrations){var _this=this;var events=[];var moves=[];changes.forEach(function(change){if(change.type===Change.CHILD_CHANGED&&_this.index_.indexedValueChanged(change.oldSnap,change.snapshotNode)){moves.push(Change.childMovedChange(change.childName,change.snapshotNode));}});this.generateEventsForType_(events,Change.CHILD_REMOVED,changes,eventRegistrations,eventCache);this.generateEventsForType_(events,Change.CHILD_ADDED,changes,eventRegistrations,eventCache);this.generateEventsForType_(events,Change.CHILD_MOVED,moves,eventRegistrations,eventCache);this.generateEventsForType_(events,Change.CHILD_CHANGED,changes,eventRegistrations,eventCache);this.generateEventsForType_(events,Change.VALUE,changes,eventRegistrations,eventCache);return events;};/**\r\n     * Given changes of a single change type, generate the corresponding events.\r\n     *\r\n     * @param {!Array.<!Event>} events\r\n     * @param {!string} eventType\r\n     * @param {!Array.<!Change>} changes\r\n     * @param {!Array.<!EventRegistration>} registrations\r\n     * @param {!Node} eventCache\r\n     * @private\r\n     */EventGenerator.prototype.generateEventsForType_=function(events,eventType,changes,registrations,eventCache){var _this=this;var filteredChanges=changes.filter(function(change){return change.type===eventType;});filteredChanges.sort(this.compareChanges_.bind(this));filteredChanges.forEach(function(change){var materializedChange=_this.materializeSingleChange_(change,eventCache);registrations.forEach(function(registration){if(registration.respondsTo(change.type)){events.push(registration.createEvent(materializedChange,_this.query_));}});});};/**\r\n     * @param {!Change} change\r\n     * @param {!Node} eventCache\r\n     * @return {!Change}\r\n     * @private\r\n     */EventGenerator.prototype.materializeSingleChange_=function(change,eventCache){if(change.type==='value'||change.type==='child_removed'){return change;}else{change.prevName=eventCache.getPredecessorChildName(/** @type {!string} */change.childName,change.snapshotNode,this.index_);return change;}};/**\r\n     * @param {!Change} a\r\n     * @param {!Change} b\r\n     * @return {number}\r\n     * @private\r\n     */EventGenerator.prototype.compareChanges_=function(a,b){if(a.childName==null||b.childName==null){throw util.assertionError('Should only compare child_ events.');}var aWrapped=new NamedNode(a.childName,a.snapshotNode);var bWrapped=new NamedNode(b.childName,b.snapshotNode);return this.index_.compare(aWrapped,bWrapped);};return EventGenerator;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * A view represents a specific location and query that has 1 or more event registrations.\r\n *\r\n * It does several things:\r\n *  - Maintains the list of event registrations for this location/query.\r\n *  - Maintains a cache of the data visible for this location/query.\r\n *  - Applies new operations (via applyOperation), updates the cache, and based on the event\r\n *    registrations returns the set of events to be raised.\r\n * @constructor\r\n */var View=/** @class */function(){/**\r\n     *\r\n     * @param {!Query} query_\r\n     * @param {!ViewCache} initialViewCache\r\n     */function View(query_,initialViewCache){this.query_=query_;this.eventRegistrations_=[];var params=this.query_.getQueryParams();var indexFilter=new IndexedFilter(params.getIndex());var filter=params.getNodeFilter();/**\r\n         * @type {ViewProcessor}\r\n         * @private\r\n         */this.processor_=new ViewProcessor(filter);var initialServerCache=initialViewCache.getServerCache();var initialEventCache=initialViewCache.getEventCache();// Don't filter server node with other filter than index, wait for tagged listen\nvar serverSnap=indexFilter.updateFullNode(ChildrenNode.EMPTY_NODE,initialServerCache.getNode(),null);var eventSnap=filter.updateFullNode(ChildrenNode.EMPTY_NODE,initialEventCache.getNode(),null);var newServerCache=new CacheNode(serverSnap,initialServerCache.isFullyInitialized(),indexFilter.filtersNodes());var newEventCache=new CacheNode(eventSnap,initialEventCache.isFullyInitialized(),filter.filtersNodes());/**\r\n         * @type {!ViewCache}\r\n         * @private\r\n         */this.viewCache_=new ViewCache(newEventCache,newServerCache);/**\r\n         * @type {!EventGenerator}\r\n         * @private\r\n         */this.eventGenerator_=new EventGenerator(this.query_);}/**\r\n     * @return {!Query}\r\n     */View.prototype.getQuery=function(){return this.query_;};/**\r\n     * @return {?Node}\r\n     */View.prototype.getServerCache=function(){return this.viewCache_.getServerCache().getNode();};/**\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */View.prototype.getCompleteServerCache=function(path){var cache=this.viewCache_.getCompleteServerSnap();if(cache){// If this isn't a \"loadsAllData\" view, then cache isn't actually a complete cache and\n// we need to see if it contains the child we're interested in.\nif(this.query_.getQueryParams().loadsAllData()||!path.isEmpty()&&!cache.getImmediateChild(path.getFront()).isEmpty()){return cache.getChild(path);}}return null;};/**\r\n     * @return {boolean}\r\n     */View.prototype.isEmpty=function(){return this.eventRegistrations_.length===0;};/**\r\n     * @param {!EventRegistration} eventRegistration\r\n     */View.prototype.addEventRegistration=function(eventRegistration){this.eventRegistrations_.push(eventRegistration);};/**\r\n     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.\r\n     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.\r\n     * @return {!Array.<!Event>} Cancel events, if cancelError was provided.\r\n     */View.prototype.removeEventRegistration=function(eventRegistration,cancelError){var cancelEvents=[];if(cancelError){util.assert(eventRegistration==null,'A cancel should cancel all event registrations.');var path_1=this.query_.path;this.eventRegistrations_.forEach(function(registration){cancelError/** @type {!Error} */=cancelError;var maybeEvent=registration.createCancelEvent(cancelError,path_1);if(maybeEvent){cancelEvents.push(maybeEvent);}});}if(eventRegistration){var remaining=[];for(var i=0;i<this.eventRegistrations_.length;++i){var existing=this.eventRegistrations_[i];if(!existing.matches(eventRegistration)){remaining.push(existing);}else if(eventRegistration.hasAnyCallback()){// We're removing just this one\nremaining=remaining.concat(this.eventRegistrations_.slice(i+1));break;}}this.eventRegistrations_=remaining;}else{this.eventRegistrations_=[];}return cancelEvents;};/**\r\n     * Applies the given Operation, updates our cache, and returns the appropriate events.\r\n     *\r\n     * @param {!Operation} operation\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeServerCache\r\n     * @return {!Array.<!Event>}\r\n     */View.prototype.applyOperation=function(operation,writesCache,completeServerCache){if(operation.type===OperationType.MERGE&&operation.source.queryId!==null){util.assert(this.viewCache_.getCompleteServerSnap(),'We should always have a full cache before handling merges');util.assert(this.viewCache_.getCompleteEventSnap(),'Missing event cache, even though we have a server cache');}var oldViewCache=this.viewCache_;var result=this.processor_.applyOperation(oldViewCache,operation,writesCache,completeServerCache);this.processor_.assertIndexed(result.viewCache);util.assert(result.viewCache.getServerCache().isFullyInitialized()||!oldViewCache.getServerCache().isFullyInitialized(),'Once a server snap is complete, it should never go back');this.viewCache_=result.viewCache;return this.generateEventsForChanges_(result.changes,result.viewCache.getEventCache().getNode(),null);};/**\r\n     * @param {!EventRegistration} registration\r\n     * @return {!Array.<!Event>}\r\n     */View.prototype.getInitialEvents=function(registration){var eventSnap=this.viewCache_.getEventCache();var initialChanges=[];if(!eventSnap.getNode().isLeafNode()){var eventNode=eventSnap.getNode();eventNode.forEachChild(PRIORITY_INDEX,function(key,childNode){initialChanges.push(Change.childAddedChange(key,childNode));});}if(eventSnap.isFullyInitialized()){initialChanges.push(Change.valueChange(eventSnap.getNode()));}return this.generateEventsForChanges_(initialChanges,eventSnap.getNode(),registration);};/**\r\n     * @private\r\n     * @param {!Array.<!Change>} changes\r\n     * @param {!Node} eventCache\r\n     * @param {EventRegistration=} eventRegistration\r\n     * @return {!Array.<!Event>}\r\n     */View.prototype.generateEventsForChanges_=function(changes,eventCache,eventRegistration){var registrations=eventRegistration?[eventRegistration]:this.eventRegistrations_;return this.eventGenerator_.generateEventsForChanges(changes,eventCache,registrations);};return View;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var __referenceConstructor$1;/**\r\n * SyncPoint represents a single location in a SyncTree with 1 or more event registrations, meaning we need to\r\n * maintain 1 or more Views at this location to cache server data and raise appropriate events for server changes\r\n * and user writes (set, transaction, update).\r\n *\r\n * It's responsible for:\r\n *  - Maintaining the set of 1 or more views necessary at this location (a SyncPoint with 0 views should be removed).\r\n *  - Proxying user / server operations to the views as appropriate (i.e. applyServerOverwrite,\r\n *    applyUserOverwrite, etc.)\r\n */var SyncPoint=/** @class */function(){function SyncPoint(){/**\r\n         * The Views being tracked at this location in the tree, stored as a map where the key is a\r\n         * queryId and the value is the View for that query.\r\n         *\r\n         * NOTE: This list will be quite small (usually 1, but perhaps 2 or 3; any more is an odd use case).\r\n         *\r\n         * @type {!Object.<!string, !View>}\r\n         * @private\r\n         */this.views_={};}Object.defineProperty(SyncPoint,\"__referenceConstructor\",{get:function get(){util.assert(__referenceConstructor$1,'Reference.ts has not been loaded');return __referenceConstructor$1;},set:function set(val){util.assert(!__referenceConstructor$1,'__referenceConstructor has already been defined');__referenceConstructor$1=val;},enumerable:true,configurable:true});/**\r\n     * @return {boolean}\r\n     */SyncPoint.prototype.isEmpty=function(){return util.isEmpty(this.views_);};/**\r\n     *\r\n     * @param {!Operation} operation\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} optCompleteServerCache\r\n     * @return {!Array.<!Event>}\r\n     */SyncPoint.prototype.applyOperation=function(operation,writesCache,optCompleteServerCache){var queryId=operation.source.queryId;if(queryId!==null){var view=util.safeGet(this.views_,queryId);util.assert(view!=null,'SyncTree gave us an op for an invalid query.');return view.applyOperation(operation,writesCache,optCompleteServerCache);}else{var events_1=[];util.forEach(this.views_,function(key,view){events_1=events_1.concat(view.applyOperation(operation,writesCache,optCompleteServerCache));});return events_1;}};/**\r\n     * Add an event callback for the specified query.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {!EventRegistration} eventRegistration\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} serverCache Complete server cache, if we have it.\r\n     * @param {boolean} serverCacheComplete\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncPoint.prototype.addEventRegistration=function(query,eventRegistration,writesCache,serverCache,serverCacheComplete){var queryId=query.queryIdentifier();var view=util.safeGet(this.views_,queryId);if(!view){// TODO: make writesCache take flag for complete server node\nvar eventCache=writesCache.calcCompleteEventCache(serverCacheComplete?serverCache:null);var eventCacheComplete=false;if(eventCache){eventCacheComplete=true;}else if(serverCache instanceof ChildrenNode){eventCache=writesCache.calcCompleteEventChildren(serverCache);eventCacheComplete=false;}else{eventCache=ChildrenNode.EMPTY_NODE;eventCacheComplete=false;}var viewCache=new ViewCache(new CacheNode(/** @type {!Node} */eventCache,eventCacheComplete,false),new CacheNode(/** @type {!Node} */serverCache,serverCacheComplete,false));view=new View(query,viewCache);this.views_[queryId]=view;}// This is guaranteed to exist now, we just created anything that was missing\nview.addEventRegistration(eventRegistration);return view.getInitialEvents(eventRegistration);};/**\r\n     * Remove event callback(s).  Return cancelEvents if a cancelError is specified.\r\n     *\r\n     * If query is the default query, we'll check all views for the specified eventRegistration.\r\n     * If eventRegistration is null, we'll remove all callbacks for the specified view(s).\r\n     *\r\n     * @param {!Query} query\r\n     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.\r\n     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.\r\n     * @return {{removed:!Array.<!Query>, events:!Array.<!Event>}} removed queries and any cancel events\r\n     */SyncPoint.prototype.removeEventRegistration=function(query,eventRegistration,cancelError){var queryId=query.queryIdentifier();var removed=[];var cancelEvents=[];var hadCompleteView=this.hasCompleteView();if(queryId==='default'){// When you do ref.off(...), we search all views for the registration to remove.\nvar self_1=this;util.forEach(this.views_,function(viewQueryId,view){cancelEvents=cancelEvents.concat(view.removeEventRegistration(eventRegistration,cancelError));if(view.isEmpty()){delete self_1.views_[viewQueryId];// We'll deal with complete views later.\nif(!view.getQuery().getQueryParams().loadsAllData()){removed.push(view.getQuery());}}});}else{// remove the callback from the specific view.\nvar view=util.safeGet(this.views_,queryId);if(view){cancelEvents=cancelEvents.concat(view.removeEventRegistration(eventRegistration,cancelError));if(view.isEmpty()){delete this.views_[queryId];// We'll deal with complete views later.\nif(!view.getQuery().getQueryParams().loadsAllData()){removed.push(view.getQuery());}}}}if(hadCompleteView&&!this.hasCompleteView()){// We removed our last complete view.\nremoved.push(new SyncPoint.__referenceConstructor(query.repo,query.path));}return{removed:removed,events:cancelEvents};};/**\r\n     * @return {!Array.<!View>}\r\n     */SyncPoint.prototype.getQueryViews=function(){var _this=this;var values=Object.keys(this.views_).map(function(key){return _this.views_[key];});return values.filter(function(view){return!view.getQuery().getQueryParams().loadsAllData();});};/**\r\n     *\r\n     * @param {!Path} path The path to the desired complete snapshot\r\n     * @return {?Node} A complete cache, if it exists\r\n     */SyncPoint.prototype.getCompleteServerCache=function(path){var serverCache=null;util.forEach(this.views_,function(key,view){serverCache=serverCache||view.getCompleteServerCache(path);});return serverCache;};/**\r\n     * @param {!Query} query\r\n     * @return {?View}\r\n     */SyncPoint.prototype.viewForQuery=function(query){var params=query.getQueryParams();if(params.loadsAllData()){return this.getCompleteView();}else{var queryId=query.queryIdentifier();return util.safeGet(this.views_,queryId);}};/**\r\n     * @param {!Query} query\r\n     * @return {boolean}\r\n     */SyncPoint.prototype.viewExistsForQuery=function(query){return this.viewForQuery(query)!=null;};/**\r\n     * @return {boolean}\r\n     */SyncPoint.prototype.hasCompleteView=function(){return this.getCompleteView()!=null;};/**\r\n     * @return {?View}\r\n     */SyncPoint.prototype.getCompleteView=function(){var completeView=util.findValue(this.views_,function(view){return view.getQuery().getQueryParams().loadsAllData();});return completeView||null;};return SyncPoint;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * This class holds a collection of writes that can be applied to nodes in unison. It abstracts away the logic with\r\n * dealing with priority writes and multiple nested writes. At any given path there is only allowed to be one write\r\n * modifying that path. Any write to an existing path or shadowing an existing path will modify that existing write\r\n * to reflect the write added.\r\n *\r\n * @constructor\r\n * @param {!ImmutableTree.<!Node>} writeTree\r\n */var CompoundWrite=/** @class */function(){function CompoundWrite(writeTree_){this.writeTree_=writeTree_;}/**\r\n     * @param {!Path} path\r\n     * @param {!Node} node\r\n     * @return {!CompoundWrite}\r\n     */CompoundWrite.prototype.addWrite=function(path,node){if(path.isEmpty()){return new CompoundWrite(new ImmutableTree(node));}else{var rootmost=this.writeTree_.findRootMostValueAndPath(path);if(rootmost!=null){var rootMostPath=rootmost.path;var value=rootmost.value;var relativePath=Path.relativePath(rootMostPath,path);value=value.updateChild(relativePath,node);return new CompoundWrite(this.writeTree_.set(rootMostPath,value));}else{var subtree=new ImmutableTree(node);var newWriteTree=this.writeTree_.setTree(path,subtree);return new CompoundWrite(newWriteTree);}}};/**\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} updates\r\n     * @return {!CompoundWrite}\r\n     */CompoundWrite.prototype.addWrites=function(path,updates){var newWrite=this;util.forEach(updates,function(childKey,node){newWrite=newWrite.addWrite(path.child(childKey),node);});return newWrite;};/**\r\n     * Will remove a write at the given path and deeper paths. This will <em>not</em> modify a write at a higher\r\n     * location, which must be removed by calling this method with that path.\r\n     *\r\n     * @param {!Path} path The path at which a write and all deeper writes should be removed\r\n     * @return {!CompoundWrite} The new CompoundWrite with the removed path\r\n     */CompoundWrite.prototype.removeWrite=function(path){if(path.isEmpty()){return CompoundWrite.Empty;}else{var newWriteTree=this.writeTree_.setTree(path,ImmutableTree.Empty);return new CompoundWrite(newWriteTree);}};/**\r\n     * Returns whether this CompoundWrite will fully overwrite a node at a given location and can therefore be\r\n     * considered \"complete\".\r\n     *\r\n     * @param {!Path} path The path to check for\r\n     * @return {boolean} Whether there is a complete write at that path\r\n     */CompoundWrite.prototype.hasCompleteWrite=function(path){return this.getCompleteNode(path)!=null;};/**\r\n     * Returns a node for a path if and only if the node is a \"complete\" overwrite at that path. This will not aggregate\r\n     * writes from deeper paths, but will return child nodes from a more shallow path.\r\n     *\r\n     * @param {!Path} path The path to get a complete write\r\n     * @return {?Node} The node if complete at that path, or null otherwise.\r\n     */CompoundWrite.prototype.getCompleteNode=function(path){var rootmost=this.writeTree_.findRootMostValueAndPath(path);if(rootmost!=null){return this.writeTree_.get(rootmost.path).getChild(Path.relativePath(rootmost.path,path));}else{return null;}};/**\r\n     * Returns all children that are guaranteed to be a complete overwrite.\r\n     *\r\n     * @return {!Array.<NamedNode>} A list of all complete children.\r\n     */CompoundWrite.prototype.getCompleteChildren=function(){var children=[];var node=this.writeTree_.value;if(node!=null){// If it's a leaf node, it has no children; so nothing to do.\nif(!node.isLeafNode()){node.forEachChild(PRIORITY_INDEX,function(childName,childNode){children.push(new NamedNode(childName,childNode));});}}else{this.writeTree_.children.inorderTraversal(function(childName,childTree){if(childTree.value!=null){children.push(new NamedNode(childName,childTree.value));}});}return children;};/**\r\n     * @param {!Path} path\r\n     * @return {!CompoundWrite}\r\n     */CompoundWrite.prototype.childCompoundWrite=function(path){if(path.isEmpty()){return this;}else{var shadowingNode=this.getCompleteNode(path);if(shadowingNode!=null){return new CompoundWrite(new ImmutableTree(shadowingNode));}else{return new CompoundWrite(this.writeTree_.subtree(path));}}};/**\r\n     * Returns true if this CompoundWrite is empty and therefore does not modify any nodes.\r\n     * @return {boolean} Whether this CompoundWrite is empty\r\n     */CompoundWrite.prototype.isEmpty=function(){return this.writeTree_.isEmpty();};/**\r\n     * Applies this CompoundWrite to a node. The node is returned with all writes from this CompoundWrite applied to the\r\n     * node\r\n     * @param {!Node} node The node to apply this CompoundWrite to\r\n     * @return {!Node} The node with all writes applied\r\n     */CompoundWrite.prototype.apply=function(node){return CompoundWrite.applySubtreeWrite_(Path.Empty,this.writeTree_,node);};/**\r\n     * @type {!CompoundWrite}\r\n     */CompoundWrite.Empty=new CompoundWrite(new ImmutableTree(null));/**\r\n     * @param {!Path} relativePath\r\n     * @param {!ImmutableTree.<!Node>} writeTree\r\n     * @param {!Node} node\r\n     * @return {!Node}\r\n     * @private\r\n     */CompoundWrite.applySubtreeWrite_=function(relativePath,writeTree,node){if(writeTree.value!=null){// Since there a write is always a leaf, we're done here\nreturn node.updateChild(relativePath,writeTree.value);}else{var priorityWrite_1=null;writeTree.children.inorderTraversal(function(childKey,childTree){if(childKey==='.priority'){// Apply priorities at the end so we don't update priorities for either empty nodes or forget\n// to apply priorities to empty nodes that are later filled\nutil.assert(childTree.value!==null,'Priority writes must always be leaf nodes');priorityWrite_1=childTree.value;}else{node=CompoundWrite.applySubtreeWrite_(relativePath.child(childKey),childTree,node);}});// If there was a priority write, we only apply it if the node is not empty\nif(!node.getChild(relativePath).isEmpty()&&priorityWrite_1!==null){node=node.updateChild(relativePath.child('.priority'),priorityWrite_1);}return node;}};return CompoundWrite;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * WriteTree tracks all pending user-initiated writes and has methods to calculate the result of merging them\r\n * with underlying server data (to create \"event cache\" data).  Pending writes are added with addOverwrite()\r\n * and addMerge(), and removed with removeWrite().\r\n *\r\n * @constructor\r\n */var WriteTree=/** @class */function(){function WriteTree(){/**\r\n         * A tree tracking the result of applying all visible writes.  This does not include transactions with\r\n         * applyLocally=false or writes that are completely shadowed by other writes.\r\n         *\r\n         * @type {!CompoundWrite}\r\n         * @private\r\n         */this.visibleWrites_=CompoundWrite.Empty;/**\r\n         * A list of all pending writes, regardless of visibility and shadowed-ness.  Used to calculate arbitrary\r\n         * sets of the changed data, such as hidden writes (from transactions) or changes with certain writes excluded (also\r\n         * used by transactions).\r\n         *\r\n         * @type {!Array.<!WriteRecord>}\r\n         * @private\r\n         */this.allWrites_=[];this.lastWriteId_=-1;}/**\r\n     * Create a new WriteTreeRef for the given path. For use with a new sync point at the given path.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {!WriteTreeRef}\r\n     */WriteTree.prototype.childWrites=function(path){return new WriteTreeRef(path,this);};/**\r\n     * Record a new overwrite from user code.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} snap\r\n     * @param {!number} writeId\r\n     * @param {boolean=} visible This is set to false by some transactions. It should be excluded from event caches\r\n     */WriteTree.prototype.addOverwrite=function(path,snap,writeId,visible){util.assert(writeId>this.lastWriteId_,'Stacking an older write on top of newer ones');if(visible===undefined){visible=true;}this.allWrites_.push({path:path,snap:snap,writeId:writeId,visible:visible});if(visible){this.visibleWrites_=this.visibleWrites_.addWrite(path,snap);}this.lastWriteId_=writeId;};/**\r\n     * Record a new merge from user code.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @param {!number} writeId\r\n     */WriteTree.prototype.addMerge=function(path,changedChildren,writeId){util.assert(writeId>this.lastWriteId_,'Stacking an older merge on top of newer ones');this.allWrites_.push({path:path,children:changedChildren,writeId:writeId,visible:true});this.visibleWrites_=this.visibleWrites_.addWrites(path,changedChildren);this.lastWriteId_=writeId;};/**\r\n     * @param {!number} writeId\r\n     * @return {?WriteRecord}\r\n     */WriteTree.prototype.getWrite=function(writeId){for(var i=0;i<this.allWrites_.length;i++){var record=this.allWrites_[i];if(record.writeId===writeId){return record;}}return null;};/**\r\n     * Remove a write (either an overwrite or merge) that has been successfully acknowledge by the server. Recalculates\r\n     * the tree if necessary.  We return true if it may have been visible, meaning views need to reevaluate.\r\n     *\r\n     * @param {!number} writeId\r\n     * @return {boolean} true if the write may have been visible (meaning we'll need to reevaluate / raise\r\n     * events as a result).\r\n     */WriteTree.prototype.removeWrite=function(writeId){// Note: disabling this check. It could be a transaction that preempted another transaction, and thus was applied\n// out of order.\n//const validClear = revert || this.allWrites_.length === 0 || writeId <= this.allWrites_[0].writeId;\n//assert(validClear, \"Either we don't have this write, or it's the first one in the queue\");\nvar _this=this;var idx=this.allWrites_.findIndex(function(s){return s.writeId===writeId;});util.assert(idx>=0,'removeWrite called with nonexistent writeId.');var writeToRemove=this.allWrites_[idx];this.allWrites_.splice(idx,1);var removedWriteWasVisible=writeToRemove.visible;var removedWriteOverlapsWithOtherWrites=false;var i=this.allWrites_.length-1;while(removedWriteWasVisible&&i>=0){var currentWrite=this.allWrites_[i];if(currentWrite.visible){if(i>=idx&&this.recordContainsPath_(currentWrite,writeToRemove.path)){// The removed write was completely shadowed by a subsequent write.\nremovedWriteWasVisible=false;}else if(writeToRemove.path.contains(currentWrite.path)){// Either we're covering some writes or they're covering part of us (depending on which came first).\nremovedWriteOverlapsWithOtherWrites=true;}}i--;}if(!removedWriteWasVisible){return false;}else if(removedWriteOverlapsWithOtherWrites){// There's some shadowing going on. Just rebuild the visible writes from scratch.\nthis.resetTree_();return true;}else{// There's no shadowing.  We can safely just remove the write(s) from visibleWrites.\nif(writeToRemove.snap){this.visibleWrites_=this.visibleWrites_.removeWrite(writeToRemove.path);}else{var children=writeToRemove.children;util.forEach(children,function(childName){_this.visibleWrites_=_this.visibleWrites_.removeWrite(writeToRemove.path.child(childName));});}return true;}};/**\r\n     * Return a complete snapshot for the given path if there's visible write data at that path, else null.\r\n     * No server data is considered.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */WriteTree.prototype.getCompleteWriteData=function(path){return this.visibleWrites_.getCompleteNode(path);};/**\r\n     * Given optional, underlying server data, and an optional set of constraints (exclude some sets, include hidden\r\n     * writes), attempt to calculate a complete snapshot for the given path\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {?Node} completeServerCache\r\n     * @param {Array.<number>=} writeIdsToExclude An optional set to be excluded\r\n     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false\r\n     * @return {?Node}\r\n     */WriteTree.prototype.calcCompleteEventCache=function(treePath,completeServerCache,writeIdsToExclude,includeHiddenWrites){if(!writeIdsToExclude&&!includeHiddenWrites){var shadowingNode=this.visibleWrites_.getCompleteNode(treePath);if(shadowingNode!=null){return shadowingNode;}else{var subMerge=this.visibleWrites_.childCompoundWrite(treePath);if(subMerge.isEmpty()){return completeServerCache;}else if(completeServerCache==null&&!subMerge.hasCompleteWrite(Path.Empty)){// We wouldn't have a complete snapshot, since there's no underlying data and no complete shadow\nreturn null;}else{var layeredCache=completeServerCache||ChildrenNode.EMPTY_NODE;return subMerge.apply(layeredCache);}}}else{var merge=this.visibleWrites_.childCompoundWrite(treePath);if(!includeHiddenWrites&&merge.isEmpty()){return completeServerCache;}else{// If the server cache is null, and we don't have a complete cache, we need to return null\nif(!includeHiddenWrites&&completeServerCache==null&&!merge.hasCompleteWrite(Path.Empty)){return null;}else{var filter=function filter(write){return(write.visible||includeHiddenWrites)&&(!writeIdsToExclude||!~writeIdsToExclude.indexOf(write.writeId))&&(write.path.contains(treePath)||treePath.contains(write.path));};var mergeAtPath=WriteTree.layerTree_(this.allWrites_,filter,treePath);var layeredCache=completeServerCache||ChildrenNode.EMPTY_NODE;return mergeAtPath.apply(layeredCache);}}}};/**\r\n     * With optional, underlying server data, attempt to return a children node of children that we have complete data for.\r\n     * Used when creating new views, to pre-fill their complete event children snapshot.\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {?ChildrenNode} completeServerChildren\r\n     * @return {!ChildrenNode}\r\n     */WriteTree.prototype.calcCompleteEventChildren=function(treePath,completeServerChildren){var completeChildren=ChildrenNode.EMPTY_NODE;var topLevelSet=this.visibleWrites_.getCompleteNode(treePath);if(topLevelSet){if(!topLevelSet.isLeafNode()){// we're shadowing everything. Return the children.\ntopLevelSet.forEachChild(PRIORITY_INDEX,function(childName,childSnap){completeChildren=completeChildren.updateImmediateChild(childName,childSnap);});}return completeChildren;}else if(completeServerChildren){// Layer any children we have on top of this\n// We know we don't have a top-level set, so just enumerate existing children\nvar merge_1=this.visibleWrites_.childCompoundWrite(treePath);completeServerChildren.forEachChild(PRIORITY_INDEX,function(childName,childNode){var node=merge_1.childCompoundWrite(new Path(childName)).apply(childNode);completeChildren=completeChildren.updateImmediateChild(childName,node);});// Add any complete children we have from the set\nmerge_1.getCompleteChildren().forEach(function(namedNode){completeChildren=completeChildren.updateImmediateChild(namedNode.name,namedNode.node);});return completeChildren;}else{// We don't have anything to layer on top of. Layer on any children we have\n// Note that we can return an empty snap if we have a defined delete\nvar merge=this.visibleWrites_.childCompoundWrite(treePath);merge.getCompleteChildren().forEach(function(namedNode){completeChildren=completeChildren.updateImmediateChild(namedNode.name,namedNode.node);});return completeChildren;}};/**\r\n     * Given that the underlying server data has updated, determine what, if anything, needs to be\r\n     * applied to the event cache.\r\n     *\r\n     * Possibilities:\r\n     *\r\n     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data\r\n     *\r\n     * 2. Some write is completely shadowing. No events to be raised\r\n     *\r\n     * 3. Is partially shadowed. Events\r\n     *\r\n     * Either existingEventSnap or existingServerSnap must exist\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {!Path} childPath\r\n     * @param {?Node} existingEventSnap\r\n     * @param {?Node} existingServerSnap\r\n     * @return {?Node}\r\n     */WriteTree.prototype.calcEventCacheAfterServerOverwrite=function(treePath,childPath,existingEventSnap,existingServerSnap){util.assert(existingEventSnap||existingServerSnap,'Either existingEventSnap or existingServerSnap must exist');var path=treePath.child(childPath);if(this.visibleWrites_.hasCompleteWrite(path)){// At this point we can probably guarantee that we're in case 2, meaning no events\n// May need to check visibility while doing the findRootMostValueAndPath call\nreturn null;}else{// No complete shadowing. We're either partially shadowing or not shadowing at all.\nvar childMerge=this.visibleWrites_.childCompoundWrite(path);if(childMerge.isEmpty()){// We're not shadowing at all. Case 1\nreturn existingServerSnap.getChild(childPath);}else{// This could be more efficient if the serverNode + updates doesn't change the eventSnap\n// However this is tricky to find out, since user updates don't necessary change the server\n// snap, e.g. priority updates on empty nodes, or deep deletes. Another special case is if the server\n// adds nodes, but doesn't change any existing writes. It is therefore not enough to\n// only check if the updates change the serverNode.\n// Maybe check if the merge tree contains these special cases and only do a full overwrite in that case?\nreturn childMerge.apply(existingServerSnap.getChild(childPath));}}};/**\r\n     * Returns a complete child for a given server snap after applying all user writes or null if there is no\r\n     * complete child for this ChildKey.\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {!string} childKey\r\n     * @param {!CacheNode} existingServerSnap\r\n     * @return {?Node}\r\n     */WriteTree.prototype.calcCompleteChild=function(treePath,childKey,existingServerSnap){var path=treePath.child(childKey);var shadowingNode=this.visibleWrites_.getCompleteNode(path);if(shadowingNode!=null){return shadowingNode;}else{if(existingServerSnap.isCompleteForChild(childKey)){var childMerge=this.visibleWrites_.childCompoundWrite(path);return childMerge.apply(existingServerSnap.getNode().getImmediateChild(childKey));}else{return null;}}};/**\r\n     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at\r\n     * a higher path, this will return the child of that write relative to the write and this path.\r\n     * Returns null if there is no write at this path.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */WriteTree.prototype.shadowingWrite=function(path){return this.visibleWrites_.getCompleteNode(path);};/**\r\n     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside\r\n     * the window, but may now be in the window.\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {?Node} completeServerData\r\n     * @param {!NamedNode} startPost\r\n     * @param {!number} count\r\n     * @param {boolean} reverse\r\n     * @param {!Index} index\r\n     * @return {!Array.<!NamedNode>}\r\n     */WriteTree.prototype.calcIndexedSlice=function(treePath,completeServerData,startPost,count,reverse,index){var toIterate;var merge=this.visibleWrites_.childCompoundWrite(treePath);var shadowingNode=merge.getCompleteNode(Path.Empty);if(shadowingNode!=null){toIterate=shadowingNode;}else if(completeServerData!=null){toIterate=merge.apply(completeServerData);}else{// no children to iterate on\nreturn[];}toIterate=toIterate.withIndex(index);if(!toIterate.isEmpty()&&!toIterate.isLeafNode()){var nodes=[];var cmp=index.getCompare();var iter=reverse?toIterate.getReverseIteratorFrom(startPost,index):toIterate.getIteratorFrom(startPost,index);var next=iter.getNext();while(next&&nodes.length<count){if(cmp(next,startPost)!==0){nodes.push(next);}next=iter.getNext();}return nodes;}else{return[];}};/**\r\n     * @param {!WriteRecord} writeRecord\r\n     * @param {!Path} path\r\n     * @return {boolean}\r\n     * @private\r\n     */WriteTree.prototype.recordContainsPath_=function(writeRecord,path){if(writeRecord.snap){return writeRecord.path.contains(path);}else{// findKey can return undefined, so use !! to coerce to boolean\nreturn!!util.findKey(writeRecord.children,function(childSnap,childName){return writeRecord.path.child(childName).contains(path);});}};/**\r\n     * Re-layer the writes and merges into a tree so we can efficiently calculate event snapshots\r\n     * @private\r\n     */WriteTree.prototype.resetTree_=function(){this.visibleWrites_=WriteTree.layerTree_(this.allWrites_,WriteTree.DefaultFilter_,Path.Empty);if(this.allWrites_.length>0){this.lastWriteId_=this.allWrites_[this.allWrites_.length-1].writeId;}else{this.lastWriteId_=-1;}};/**\r\n     * The default filter used when constructing the tree. Keep everything that's visible.\r\n     *\r\n     * @param {!WriteRecord} write\r\n     * @return {boolean}\r\n     * @private\r\n     */WriteTree.DefaultFilter_=function(write){return write.visible;};/**\r\n     * Static method. Given an array of WriteRecords, a filter for which ones to include, and a path, construct the tree of\r\n     * event data at that path.\r\n     *\r\n     * @param {!Array.<!WriteRecord>} writes\r\n     * @param {!function(!WriteRecord):boolean} filter\r\n     * @param {!Path} treeRoot\r\n     * @return {!CompoundWrite}\r\n     * @private\r\n     */WriteTree.layerTree_=function(writes,filter,treeRoot){var compoundWrite=CompoundWrite.Empty;for(var i=0;i<writes.length;++i){var write=writes[i];// Theory, a later set will either:\n// a) abort a relevant transaction, so no need to worry about excluding it from calculating that transaction\n// b) not be relevant to a transaction (separate branch), so again will not affect the data for that transaction\nif(filter(write)){var writePath=write.path;var relativePath=void 0;if(write.snap){if(treeRoot.contains(writePath)){relativePath=Path.relativePath(treeRoot,writePath);compoundWrite=compoundWrite.addWrite(relativePath,write.snap);}else if(writePath.contains(treeRoot)){relativePath=Path.relativePath(writePath,treeRoot);compoundWrite=compoundWrite.addWrite(Path.Empty,write.snap.getChild(relativePath));}}else if(write.children){if(treeRoot.contains(writePath)){relativePath=Path.relativePath(treeRoot,writePath);compoundWrite=compoundWrite.addWrites(relativePath,write.children);}else if(writePath.contains(treeRoot)){relativePath=Path.relativePath(writePath,treeRoot);if(relativePath.isEmpty()){compoundWrite=compoundWrite.addWrites(Path.Empty,write.children);}else{var child=util.safeGet(write.children,relativePath.getFront());if(child){// There exists a child in this node that matches the root path\nvar deepNode=child.getChild(relativePath.popFront());compoundWrite=compoundWrite.addWrite(Path.Empty,deepNode);}}}}else{throw util.assertionError('WriteRecord should have .snap or .children');}}}return compoundWrite;};return WriteTree;}();/**\r\n * A WriteTreeRef wraps a WriteTree and a path, for convenient access to a particular subtree.  All of the methods\r\n * just proxy to the underlying WriteTree.\r\n *\r\n * @constructor\r\n */var WriteTreeRef=/** @class */function(){/**\r\n     * @param {!Path} path\r\n     * @param {!WriteTree} writeTree\r\n     */function WriteTreeRef(path,writeTree){this.treePath_=path;this.writeTree_=writeTree;}/**\r\n     * If possible, returns a complete event cache, using the underlying server data if possible. In addition, can be used\r\n     * to get a cache that includes hidden writes, and excludes arbitrary writes. Note that customizing the returned node\r\n     * can lead to a more expensive calculation.\r\n     *\r\n     * @param {?Node} completeServerCache\r\n     * @param {Array.<number>=} writeIdsToExclude Optional writes to exclude.\r\n     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false\r\n     * @return {?Node}\r\n     */WriteTreeRef.prototype.calcCompleteEventCache=function(completeServerCache,writeIdsToExclude,includeHiddenWrites){return this.writeTree_.calcCompleteEventCache(this.treePath_,completeServerCache,writeIdsToExclude,includeHiddenWrites);};/**\r\n     * If possible, returns a children node containing all of the complete children we have data for. The returned data is a\r\n     * mix of the given server data and write data.\r\n     *\r\n     * @param {?ChildrenNode} completeServerChildren\r\n     * @return {!ChildrenNode}\r\n     */WriteTreeRef.prototype.calcCompleteEventChildren=function(completeServerChildren){return this.writeTree_.calcCompleteEventChildren(this.treePath_,completeServerChildren);};/**\r\n     * Given that either the underlying server data has updated or the outstanding writes have updated, determine what,\r\n     * if anything, needs to be applied to the event cache.\r\n     *\r\n     * Possibilities:\r\n     *\r\n     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data\r\n     *\r\n     * 2. Some write is completely shadowing. No events to be raised\r\n     *\r\n     * 3. Is partially shadowed. Events should be raised\r\n     *\r\n     * Either existingEventSnap or existingServerSnap must exist, this is validated via an assert\r\n     *\r\n     * @param {!Path} path\r\n     * @param {?Node} existingEventSnap\r\n     * @param {?Node} existingServerSnap\r\n     * @return {?Node}\r\n     */WriteTreeRef.prototype.calcEventCacheAfterServerOverwrite=function(path,existingEventSnap,existingServerSnap){return this.writeTree_.calcEventCacheAfterServerOverwrite(this.treePath_,path,existingEventSnap,existingServerSnap);};/**\r\n     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at\r\n     * a higher path, this will return the child of that write relative to the write and this path.\r\n     * Returns null if there is no write at this path.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */WriteTreeRef.prototype.shadowingWrite=function(path){return this.writeTree_.shadowingWrite(this.treePath_.child(path));};/**\r\n     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside\r\n     * the window, but may now be in the window\r\n     *\r\n     * @param {?Node} completeServerData\r\n     * @param {!NamedNode} startPost\r\n     * @param {!number} count\r\n     * @param {boolean} reverse\r\n     * @param {!Index} index\r\n     * @return {!Array.<!NamedNode>}\r\n     */WriteTreeRef.prototype.calcIndexedSlice=function(completeServerData,startPost,count,reverse,index){return this.writeTree_.calcIndexedSlice(this.treePath_,completeServerData,startPost,count,reverse,index);};/**\r\n     * Returns a complete child for a given server snap after applying all user writes or null if there is no\r\n     * complete child for this ChildKey.\r\n     *\r\n     * @param {!string} childKey\r\n     * @param {!CacheNode} existingServerCache\r\n     * @return {?Node}\r\n     */WriteTreeRef.prototype.calcCompleteChild=function(childKey,existingServerCache){return this.writeTree_.calcCompleteChild(this.treePath_,childKey,existingServerCache);};/**\r\n     * Return a WriteTreeRef for a child.\r\n     *\r\n     * @param {string} childName\r\n     * @return {!WriteTreeRef}\r\n     */WriteTreeRef.prototype.child=function(childName){return new WriteTreeRef(this.treePath_.child(childName),this.writeTree_);};return WriteTreeRef;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * SyncTree is the central class for managing event callback registration, data caching, views\r\n * (query processing), and event generation.  There are typically two SyncTree instances for\r\n * each Repo, one for the normal Firebase data, and one for the .info data.\r\n *\r\n * It has a number of responsibilities, including:\r\n *  - Tracking all user event callbacks (registered via addEventRegistration() and removeEventRegistration()).\r\n *  - Applying and caching data changes for user set(), transaction(), and update() calls\r\n *    (applyUserOverwrite(), applyUserMerge()).\r\n *  - Applying and caching data changes for server data changes (applyServerOverwrite(),\r\n *    applyServerMerge()).\r\n *  - Generating user-facing events for server and user changes (all of the apply* methods\r\n *    return the set of events that need to be raised as a result).\r\n *  - Maintaining the appropriate set of server listens to ensure we are always subscribed\r\n *    to the correct set of paths and queries to satisfy the current set of user event\r\n *    callbacks (listens are started/stopped using the provided listenProvider).\r\n *\r\n * NOTE: Although SyncTree tracks event callbacks and calculates events to raise, the actual\r\n * events are returned to the caller rather than raised synchronously.\r\n *\r\n * @constructor\r\n */var SyncTree=/** @class */function(){/**\r\n     * @param {!ListenProvider} listenProvider_ Used by SyncTree to start / stop listening\r\n     *   to server data.\r\n     */function SyncTree(listenProvider_){this.listenProvider_=listenProvider_;/**\r\n         * Tree of SyncPoints.  There's a SyncPoint at any location that has 1 or more views.\r\n         * @type {!ImmutableTree.<!SyncPoint>}\r\n         * @private\r\n         */this.syncPointTree_=ImmutableTree.Empty;/**\r\n         * A tree of all pending user writes (user-initiated set()'s, transaction()'s, update()'s, etc.).\r\n         * @type {!WriteTree}\r\n         * @private\r\n         */this.pendingWriteTree_=new WriteTree();this.tagToQueryMap_={};this.queryToTagMap_={};}/**\r\n     * Apply the data changes for a user-generated set() or transaction() call.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} newData\r\n     * @param {number} writeId\r\n     * @param {boolean=} visible\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyUserOverwrite=function(path,newData,writeId,visible){// Record pending write.\nthis.pendingWriteTree_.addOverwrite(path,newData,writeId,visible);if(!visible){return[];}else{return this.applyOperationToSyncPoints_(new Overwrite(OperationSource.User,path,newData));}};/**\r\n     * Apply the data from a user-generated update() call\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @param {!number} writeId\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyUserMerge=function(path,changedChildren,writeId){// Record pending merge.\nthis.pendingWriteTree_.addMerge(path,changedChildren,writeId);var changeTree=ImmutableTree.fromObject(changedChildren);return this.applyOperationToSyncPoints_(new Merge(OperationSource.User,path,changeTree));};/**\r\n     * Acknowledge a pending user write that was previously registered with applyUserOverwrite() or applyUserMerge().\r\n     *\r\n     * @param {!number} writeId\r\n     * @param {boolean=} revert True if the given write failed and needs to be reverted\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.ackUserWrite=function(writeId,revert){if(revert===void 0){revert=false;}var write=this.pendingWriteTree_.getWrite(writeId);var needToReevaluate=this.pendingWriteTree_.removeWrite(writeId);if(!needToReevaluate){return[];}else{var affectedTree_1=ImmutableTree.Empty;if(write.snap!=null){// overwrite\naffectedTree_1=affectedTree_1.set(Path.Empty,true);}else{util.forEach(write.children,function(pathString,node){affectedTree_1=affectedTree_1.set(new Path(pathString),node);});}return this.applyOperationToSyncPoints_(new AckUserWrite(write.path,affectedTree_1,revert));}};/**\r\n     * Apply new server data for the specified path..\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} newData\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyServerOverwrite=function(path,newData){return this.applyOperationToSyncPoints_(new Overwrite(OperationSource.Server,path,newData));};/**\r\n     * Apply new server data to be merged in at the specified path.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyServerMerge=function(path,changedChildren){var changeTree=ImmutableTree.fromObject(changedChildren);return this.applyOperationToSyncPoints_(new Merge(OperationSource.Server,path,changeTree));};/**\r\n     * Apply a listen complete for a query\r\n     *\r\n     * @param {!Path} path\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyListenComplete=function(path){return this.applyOperationToSyncPoints_(new ListenComplete(OperationSource.Server,path));};/**\r\n     * Apply new server data for the specified tagged query.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} snap\r\n     * @param {!number} tag\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyTaggedQueryOverwrite=function(path,snap,tag){var queryKey=this.queryKeyForTag_(tag);if(queryKey!=null){var r=SyncTree.parseQueryKey_(queryKey);var queryPath=r.path,queryId=r.queryId;var relativePath=Path.relativePath(queryPath,path);var op=new Overwrite(OperationSource.forServerTaggedQuery(queryId),relativePath,snap);return this.applyTaggedOperation_(queryPath,op);}else{// Query must have been removed already\nreturn[];}};/**\r\n     * Apply server data to be merged in for the specified tagged query.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @param {!number} tag\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyTaggedQueryMerge=function(path,changedChildren,tag){var queryKey=this.queryKeyForTag_(tag);if(queryKey){var r=SyncTree.parseQueryKey_(queryKey);var queryPath=r.path,queryId=r.queryId;var relativePath=Path.relativePath(queryPath,path);var changeTree=ImmutableTree.fromObject(changedChildren);var op=new Merge(OperationSource.forServerTaggedQuery(queryId),relativePath,changeTree);return this.applyTaggedOperation_(queryPath,op);}else{// We've already removed the query. No big deal, ignore the update\nreturn[];}};/**\r\n     * Apply a listen complete for a tagged query\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!number} tag\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.applyTaggedListenComplete=function(path,tag){var queryKey=this.queryKeyForTag_(tag);if(queryKey){var r=SyncTree.parseQueryKey_(queryKey);var queryPath=r.path,queryId=r.queryId;var relativePath=Path.relativePath(queryPath,path);var op=new ListenComplete(OperationSource.forServerTaggedQuery(queryId),relativePath);return this.applyTaggedOperation_(queryPath,op);}else{// We've already removed the query. No big deal, ignore the update\nreturn[];}};/**\r\n     * Add an event callback for the specified query.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {!EventRegistration} eventRegistration\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */SyncTree.prototype.addEventRegistration=function(query,eventRegistration){var path=query.path;var serverCache=null;var foundAncestorDefaultView=false;// Any covering writes will necessarily be at the root, so really all we need to find is the server cache.\n// Consider optimizing this once there's a better understanding of what actual behavior will be.\nthis.syncPointTree_.foreachOnPath(path,function(pathToSyncPoint,sp){var relativePath=Path.relativePath(pathToSyncPoint,path);serverCache=serverCache||sp.getCompleteServerCache(relativePath);foundAncestorDefaultView=foundAncestorDefaultView||sp.hasCompleteView();});var syncPoint=this.syncPointTree_.get(path);if(!syncPoint){syncPoint=new SyncPoint();this.syncPointTree_=this.syncPointTree_.set(path,syncPoint);}else{foundAncestorDefaultView=foundAncestorDefaultView||syncPoint.hasCompleteView();serverCache=serverCache||syncPoint.getCompleteServerCache(Path.Empty);}var serverCacheComplete;if(serverCache!=null){serverCacheComplete=true;}else{serverCacheComplete=false;serverCache=ChildrenNode.EMPTY_NODE;var subtree=this.syncPointTree_.subtree(path);subtree.foreachChild(function(childName,childSyncPoint){var completeCache=childSyncPoint.getCompleteServerCache(Path.Empty);if(completeCache){serverCache=serverCache.updateImmediateChild(childName,completeCache);}});}var viewAlreadyExists=syncPoint.viewExistsForQuery(query);if(!viewAlreadyExists&&!query.getQueryParams().loadsAllData()){// We need to track a tag for this query\nvar queryKey=SyncTree.makeQueryKey_(query);util.assert(!(queryKey in this.queryToTagMap_),'View does not exist, but we have a tag');var tag=SyncTree.getNextQueryTag_();this.queryToTagMap_[queryKey]=tag;// Coerce to string to avoid sparse arrays.\nthis.tagToQueryMap_['_'+tag]=queryKey;}var writesCache=this.pendingWriteTree_.childWrites(path);var events=syncPoint.addEventRegistration(query,eventRegistration,writesCache,serverCache,serverCacheComplete);if(!viewAlreadyExists&&!foundAncestorDefaultView){var view/** @type !View */=syncPoint.viewForQuery(query);events=events.concat(this.setupListener_(query,view));}return events;};/**\r\n     * Remove event callback(s).\r\n     *\r\n     * If query is the default query, we'll check all queries for the specified eventRegistration.\r\n     * If eventRegistration is null, we'll remove all callbacks for the specified query/queries.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {?EventRegistration} eventRegistration If null, all callbacks are removed.\r\n     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.\r\n     * @return {!Array.<!Event>} Cancel events, if cancelError was provided.\r\n     */SyncTree.prototype.removeEventRegistration=function(query,eventRegistration,cancelError){var _this=this;// Find the syncPoint first. Then deal with whether or not it has matching listeners\nvar path=query.path;var maybeSyncPoint=this.syncPointTree_.get(path);var cancelEvents=[];// A removal on a default query affects all queries at that location. A removal on an indexed query, even one without\n// other query constraints, does *not* affect all queries at that location. So this check must be for 'default', and\n// not loadsAllData().\nif(maybeSyncPoint&&(query.queryIdentifier()==='default'||maybeSyncPoint.viewExistsForQuery(query))){/**\r\n             * @type {{removed: !Array.<!Query>, events: !Array.<!Event>}}\r\n             */var removedAndEvents=maybeSyncPoint.removeEventRegistration(query,eventRegistration,cancelError);if(maybeSyncPoint.isEmpty()){this.syncPointTree_=this.syncPointTree_.remove(path);}var removed=removedAndEvents.removed;cancelEvents=removedAndEvents.events;// We may have just removed one of many listeners and can short-circuit this whole process\n// We may also not have removed a default listener, in which case all of the descendant listeners should already be\n// properly set up.\n//\n// Since indexed queries can shadow if they don't have other query constraints, check for loadsAllData(), instead of\n// queryId === 'default'\nvar removingDefault=-1!==removed.findIndex(function(query){return query.getQueryParams().loadsAllData();});var covered=this.syncPointTree_.findOnPath(path,function(relativePath,parentSyncPoint){return parentSyncPoint.hasCompleteView();});if(removingDefault&&!covered){var subtree=this.syncPointTree_.subtree(path);// There are potentially child listeners. Determine what if any listens we need to send before executing the\n// removal\nif(!subtree.isEmpty()){// We need to fold over our subtree and collect the listeners to send\nvar newViews=this.collectDistinctViewsForSubTree_(subtree);// Ok, we've collected all the listens we need. Set them up.\nfor(var i=0;i<newViews.length;++i){var view=newViews[i],newQuery=view.getQuery();var listener=this.createListenerForView_(view);this.listenProvider_.startListening(SyncTree.queryForListening_(newQuery),this.tagForQuery_(newQuery),listener.hashFn,listener.onComplete);}}}// If we removed anything and we're not covered by a higher up listen, we need to stop listening on this query\n// The above block has us covered in terms of making sure we're set up on listens lower in the tree.\n// Also, note that if we have a cancelError, it's already been removed at the provider level.\nif(!covered&&removed.length>0&&!cancelError){// If we removed a default, then we weren't listening on any of the other queries here. Just cancel the one\n// default. Otherwise, we need to iterate through and cancel each individual query\nif(removingDefault){// We don't tag default listeners\nvar defaultTag=null;this.listenProvider_.stopListening(SyncTree.queryForListening_(query),defaultTag);}else{removed.forEach(function(queryToRemove){var tagToRemove=_this.queryToTagMap_[SyncTree.makeQueryKey_(queryToRemove)];_this.listenProvider_.stopListening(SyncTree.queryForListening_(queryToRemove),tagToRemove);});}}// Now, clear all of the tags we're tracking for the removed listens\nthis.removeTags_(removed);}return cancelEvents;};/**\r\n     * Returns a complete cache, if we have one, of the data at a particular path. The location must have a listener above\r\n     * it, but as this is only used by transaction code, that should always be the case anyways.\r\n     *\r\n     * Note: this method will *include* hidden writes from transaction with applyLocally set to false.\r\n     * @param {!Path} path The path to the data we want\r\n     * @param {Array.<number>=} writeIdsToExclude A specific set to be excluded\r\n     * @return {?Node}\r\n     */SyncTree.prototype.calcCompleteEventCache=function(path,writeIdsToExclude){var includeHiddenSets=true;var writeTree=this.pendingWriteTree_;var serverCache=this.syncPointTree_.findOnPath(path,function(pathSoFar,syncPoint){var relativePath=Path.relativePath(pathSoFar,path);var serverCache=syncPoint.getCompleteServerCache(relativePath);if(serverCache){return serverCache;}});return writeTree.calcCompleteEventCache(path,serverCache,writeIdsToExclude,includeHiddenSets);};/**\r\n     * This collapses multiple unfiltered views into a single view, since we only need a single\r\n     * listener for them.\r\n     *\r\n     * @param {!ImmutableTree.<!SyncPoint>} subtree\r\n     * @return {!Array.<!View>}\r\n     * @private\r\n     */SyncTree.prototype.collectDistinctViewsForSubTree_=function(subtree){return subtree.fold(function(relativePath,maybeChildSyncPoint,childMap){if(maybeChildSyncPoint&&maybeChildSyncPoint.hasCompleteView()){var completeView=maybeChildSyncPoint.getCompleteView();return[completeView];}else{// No complete view here, flatten any deeper listens into an array\nvar views_1=[];if(maybeChildSyncPoint){views_1=maybeChildSyncPoint.getQueryViews();}util.forEach(childMap,function(key,childViews){views_1=views_1.concat(childViews);});return views_1;}});};/**\r\n     * @param {!Array.<!Query>} queries\r\n     * @private\r\n     */SyncTree.prototype.removeTags_=function(queries){for(var j=0;j<queries.length;++j){var removedQuery=queries[j];if(!removedQuery.getQueryParams().loadsAllData()){// We should have a tag for this\nvar removedQueryKey=SyncTree.makeQueryKey_(removedQuery);var removedQueryTag=this.queryToTagMap_[removedQueryKey];delete this.queryToTagMap_[removedQueryKey];delete this.tagToQueryMap_['_'+removedQueryTag];}}};/**\r\n     * Normalizes a query to a query we send the server for listening\r\n     * @param {!Query} query\r\n     * @return {!Query} The normalized query\r\n     * @private\r\n     */SyncTree.queryForListening_=function(query){if(query.getQueryParams().loadsAllData()&&!query.getQueryParams().isDefault()){// We treat queries that load all data as default queries\n// Cast is necessary because ref() technically returns Firebase which is actually fb.api.Firebase which inherits\n// from Query\nreturn(/** @type {!Query} */query.getRef());}else{return query;}};/**\r\n     * For a given new listen, manage the de-duplication of outstanding subscriptions.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {!View} view\r\n     * @return {!Array.<!Event>} This method can return events to support synchronous data sources\r\n     * @private\r\n     */SyncTree.prototype.setupListener_=function(query,view){var path=query.path;var tag=this.tagForQuery_(query);var listener=this.createListenerForView_(view);var events=this.listenProvider_.startListening(SyncTree.queryForListening_(query),tag,listener.hashFn,listener.onComplete);var subtree=this.syncPointTree_.subtree(path);// The root of this subtree has our query. We're here because we definitely need to send a listen for that, but we\n// may need to shadow other listens as well.\nif(tag){util.assert(!subtree.value.hasCompleteView(),\"If we're adding a query, it shouldn't be shadowed\");}else{// Shadow everything at or below this location, this is a default listener.\nvar queriesToStop=subtree.fold(function(relativePath,maybeChildSyncPoint,childMap){if(!relativePath.isEmpty()&&maybeChildSyncPoint&&maybeChildSyncPoint.hasCompleteView()){return[maybeChildSyncPoint.getCompleteView().getQuery()];}else{// No default listener here, flatten any deeper queries into an array\nvar queries_1=[];if(maybeChildSyncPoint){queries_1=queries_1.concat(maybeChildSyncPoint.getQueryViews().map(function(view){return view.getQuery();}));}util.forEach(childMap,function(key,childQueries){queries_1=queries_1.concat(childQueries);});return queries_1;}});for(var i=0;i<queriesToStop.length;++i){var queryToStop=queriesToStop[i];this.listenProvider_.stopListening(SyncTree.queryForListening_(queryToStop),this.tagForQuery_(queryToStop));}}return events;};/**\r\n     *\r\n     * @param {!View} view\r\n     * @return {{hashFn: function(), onComplete: function(!string, *)}}\r\n     * @private\r\n     */SyncTree.prototype.createListenerForView_=function(view){var _this=this;var query=view.getQuery();var tag=this.tagForQuery_(query);return{hashFn:function hashFn(){var cache=view.getServerCache()||ChildrenNode.EMPTY_NODE;return cache.hash();},onComplete:function onComplete(status){if(status==='ok'){if(tag){return _this.applyTaggedListenComplete(query.path,tag);}else{return _this.applyListenComplete(query.path);}}else{// If a listen failed, kill all of the listeners here, not just the one that triggered the error.\n// Note that this may need to be scoped to just this listener if we change permissions on filtered children\nvar error=errorForServerCode(status,query);return _this.removeEventRegistration(query,/*eventRegistration*/null,error);}}};};/**\r\n     * Given a query, computes a \"queryKey\" suitable for use in our queryToTagMap_.\r\n     * @private\r\n     * @param {!Query} query\r\n     * @return {string}\r\n     */SyncTree.makeQueryKey_=function(query){return query.path.toString()+'$'+query.queryIdentifier();};/**\r\n     * Given a queryKey (created by makeQueryKey), parse it back into a path and queryId.\r\n     * @private\r\n     * @param {!string} queryKey\r\n     * @return {{queryId: !string, path: !Path}}\r\n     */SyncTree.parseQueryKey_=function(queryKey){var splitIndex=queryKey.indexOf('$');util.assert(splitIndex!==-1&&splitIndex<queryKey.length-1,'Bad queryKey.');return{queryId:queryKey.substr(splitIndex+1),path:new Path(queryKey.substr(0,splitIndex))};};/**\r\n     * Return the query associated with the given tag, if we have one\r\n     * @param {!number} tag\r\n     * @return {?string}\r\n     * @private\r\n     */SyncTree.prototype.queryKeyForTag_=function(tag){return this.tagToQueryMap_['_'+tag];};/**\r\n     * Return the tag associated with the given query.\r\n     * @param {!Query} query\r\n     * @return {?number}\r\n     * @private\r\n     */SyncTree.prototype.tagForQuery_=function(query){var queryKey=SyncTree.makeQueryKey_(query);return util.safeGet(this.queryToTagMap_,queryKey);};/**\r\n     * Static accessor for query tags.\r\n     * @return {number}\r\n     * @private\r\n     */SyncTree.getNextQueryTag_=function(){return SyncTree.nextQueryTag_++;};/**\r\n     * A helper method to apply tagged operations\r\n     *\r\n     * @param {!Path} queryPath\r\n     * @param {!Operation} operation\r\n     * @return {!Array.<!Event>}\r\n     * @private\r\n     */SyncTree.prototype.applyTaggedOperation_=function(queryPath,operation){var syncPoint=this.syncPointTree_.get(queryPath);util.assert(syncPoint,\"Missing sync point for query tag that we're tracking\");var writesCache=this.pendingWriteTree_.childWrites(queryPath);return syncPoint.applyOperation(operation,writesCache,/*serverCache=*/null);};/**\r\n     * A helper method that visits all descendant and ancestor SyncPoints, applying the operation.\r\n     *\r\n     * NOTES:\r\n     * - Descendant SyncPoints will be visited first (since we raise events depth-first).\r\n  \n     * - We call applyOperation() on each SyncPoint passing three things:\r\n     *   1. A version of the Operation that has been made relative to the SyncPoint location.\r\n     *   2. A WriteTreeRef of any writes we have cached at the SyncPoint location.\r\n     *   3. A snapshot Node with cached server data, if we have it.\r\n  \n     * - We concatenate all of the events returned by each SyncPoint and return the result.\r\n     *\r\n     * @param {!Operation} operation\r\n     * @return {!Array.<!Event>}\r\n     * @private\r\n     */SyncTree.prototype.applyOperationToSyncPoints_=function(operation){return this.applyOperationHelper_(operation,this.syncPointTree_,/*serverCache=*/null,this.pendingWriteTree_.childWrites(Path.Empty));};/**\r\n     * Recursive helper for applyOperationToSyncPoints_\r\n     *\r\n     * @private\r\n     * @param {!Operation} operation\r\n     * @param {ImmutableTree.<!SyncPoint>} syncPointTree\r\n     * @param {?Node} serverCache\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @return {!Array.<!Event>}\r\n     */SyncTree.prototype.applyOperationHelper_=function(operation,syncPointTree,serverCache,writesCache){if(operation.path.isEmpty()){return this.applyOperationDescendantsHelper_(operation,syncPointTree,serverCache,writesCache);}else{var syncPoint=syncPointTree.get(Path.Empty);// If we don't have cached server data, see if we can get it from this SyncPoint.\nif(serverCache==null&&syncPoint!=null){serverCache=syncPoint.getCompleteServerCache(Path.Empty);}var events=[];var childName=operation.path.getFront();var childOperation=operation.operationForChild(childName);var childTree=syncPointTree.children.get(childName);if(childTree&&childOperation){var childServerCache=serverCache?serverCache.getImmediateChild(childName):null;var childWritesCache=writesCache.child(childName);events=events.concat(this.applyOperationHelper_(childOperation,childTree,childServerCache,childWritesCache));}if(syncPoint){events=events.concat(syncPoint.applyOperation(operation,writesCache,serverCache));}return events;}};/**\r\n     * Recursive helper for applyOperationToSyncPoints_\r\n     *\r\n     * @private\r\n     * @param {!Operation} operation\r\n     * @param {ImmutableTree.<!SyncPoint>} syncPointTree\r\n     * @param {?Node} serverCache\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @return {!Array.<!Event>}\r\n     */SyncTree.prototype.applyOperationDescendantsHelper_=function(operation,syncPointTree,serverCache,writesCache){var _this=this;var syncPoint=syncPointTree.get(Path.Empty);// If we don't have cached server data, see if we can get it from this SyncPoint.\nif(serverCache==null&&syncPoint!=null){serverCache=syncPoint.getCompleteServerCache(Path.Empty);}var events=[];syncPointTree.children.inorderTraversal(function(childName,childTree){var childServerCache=serverCache?serverCache.getImmediateChild(childName):null;var childWritesCache=writesCache.child(childName);var childOperation=operation.operationForChild(childName);if(childOperation){events=events.concat(_this.applyOperationDescendantsHelper_(childOperation,childTree,childServerCache,childWritesCache));}});if(syncPoint){events=events.concat(syncPoint.applyOperation(operation,writesCache,serverCache));}return events;};/**\r\n     * Static tracker for next query tag.\r\n     * @type {number}\r\n     * @private\r\n     */SyncTree.nextQueryTag_=1;return SyncTree;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Mutable object which basically just stores a reference to the \"latest\" immutable snapshot.\r\n *\r\n * @constructor\r\n */var SnapshotHolder=/** @class */function(){function SnapshotHolder(){this.rootNode_=ChildrenNode.EMPTY_NODE;}SnapshotHolder.prototype.getNode=function(path){return this.rootNode_.getChild(path);};SnapshotHolder.prototype.updateSnapshot=function(path,newSnapshotNode){this.rootNode_=this.rootNode_.updateChild(path,newSnapshotNode);};return SnapshotHolder;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Abstraction around FirebaseApp's token fetching capabilities.\r\n */var AuthTokenProvider=/** @class */function(){/**\r\n     * @param {!FirebaseApp} app_\r\n     */function AuthTokenProvider(app_){this.app_=app_;}/**\r\n     * @param {boolean} forceRefresh\r\n     * @return {!Promise<FirebaseAuthTokenData>}\r\n     */AuthTokenProvider.prototype.getToken=function(forceRefresh){return this.app_['INTERNAL']['getToken'](forceRefresh).then(null,// .catch\nfunction(error){// TODO: Need to figure out all the cases this is raised and whether\n// this makes sense.\nif(error&&error.code==='auth/token-not-initialized'){log('Got auth/token-not-initialized error.  Treating as null token.');return null;}else{return Promise.reject(error);}});};AuthTokenProvider.prototype.addTokenChangeListener=function(listener){// TODO: We might want to wrap the listener and call it with no args to\n// avoid a leaky abstraction, but that makes removing the listener harder.\nthis.app_['INTERNAL']['addAuthTokenListener'](listener);};AuthTokenProvider.prototype.removeTokenChangeListener=function(listener){this.app_['INTERNAL']['removeAuthTokenListener'](listener);};AuthTokenProvider.prototype.notifyForInvalidToken=function(){var errorMessage='Provided authentication credentials for the app named \"'+this.app_.name+'\" are invalid. This usually indicates your app was not '+'initialized correctly. ';if('credential'in this.app_.options){errorMessage+='Make sure the \"credential\" property provided to initializeApp() '+'is authorized to access the specified \"databaseURL\" and is from the correct '+'project.';}else if('serviceAccount'in this.app_.options){errorMessage+='Make sure the \"serviceAccount\" property provided to initializeApp() '+'is authorized to access the specified \"databaseURL\" and is from the correct '+'project.';}else{errorMessage+='Make sure the \"apiKey\" and \"databaseURL\" properties provided to '+'initializeApp() match the values provided for your app at '+'https://console.firebase.google.com/.';}warn(errorMessage);};return AuthTokenProvider;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Tracks a collection of stats.\r\n *\r\n * @constructor\r\n */var StatsCollection=/** @class */function(){function StatsCollection(){this.counters_={};}StatsCollection.prototype.incrementCounter=function(name,amount){if(amount===void 0){amount=1;}if(!util.contains(this.counters_,name))this.counters_[name]=0;this.counters_[name]+=amount;};StatsCollection.prototype.get=function(){return util.deepCopy(this.counters_);};return StatsCollection;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var StatsManager=/** @class */function(){function StatsManager(){}StatsManager.getCollection=function(repoInfo){var hashString=repoInfo.toString();if(!this.collections_[hashString]){this.collections_[hashString]=new StatsCollection();}return this.collections_[hashString];};StatsManager.getOrCreateReporter=function(repoInfo,creatorFunction){var hashString=repoInfo.toString();if(!this.reporters_[hashString]){this.reporters_[hashString]=creatorFunction();}return this.reporters_[hashString];};StatsManager.collections_={};StatsManager.reporters_={};return StatsManager;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Returns the delta from the previous call to get stats.\r\n *\r\n * @param collection_ The collection to \"listen\" to.\r\n * @constructor\r\n */var StatsListener=/** @class */function(){function StatsListener(collection_){this.collection_=collection_;this.last_=null;}StatsListener.prototype.get=function(){var newStats=this.collection_.get();var delta=util.clone(newStats);if(this.last_){util.forEach(this.last_,function(stat,value){delta[stat]=delta[stat]-value;});}this.last_=newStats;return delta;};return StatsListener;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */// Assuming some apps may have a short amount of time on page, and a bulk of firebase operations probably\n// happen on page load, we try to report our first set of stats pretty quickly, but we wait at least 10\n// seconds to try to ensure the Firebase connection is established / settled.\nvar FIRST_STATS_MIN_TIME=10*1000;var FIRST_STATS_MAX_TIME=30*1000;// We'll continue to report stats on average every 5 minutes.\nvar REPORT_STATS_INTERVAL=5*60*1000;/**\r\n * @constructor\r\n */var StatsReporter=/** @class */function(){/**\r\n     * @param collection\r\n     * @param server_\r\n     */function StatsReporter(collection,server_){this.server_=server_;this.statsToReport_={};this.statsListener_=new StatsListener(collection);var timeout=FIRST_STATS_MIN_TIME+(FIRST_STATS_MAX_TIME-FIRST_STATS_MIN_TIME)*Math.random();setTimeoutNonBlocking(this.reportStats_.bind(this),Math.floor(timeout));}StatsReporter.prototype.includeStat=function(stat){this.statsToReport_[stat]=true;};StatsReporter.prototype.reportStats_=function(){var _this=this;var stats=this.statsListener_.get();var reportedStats={};var haveStatsToReport=false;util.forEach(stats,function(stat,value){if(value>0&&util.contains(_this.statsToReport_,stat)){reportedStats[stat]=value;haveStatsToReport=true;}});if(haveStatsToReport){this.server_.reportStats(reportedStats);}// queue our next run.\nsetTimeoutNonBlocking(this.reportStats_.bind(this),Math.floor(Math.random()*2*REPORT_STATS_INTERVAL));};return StatsReporter;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * The event queue serves a few purposes:\r\n * 1. It ensures we maintain event order in the face of event callbacks doing operations that result in more\r\n *    events being queued.\r\n * 2. raiseQueuedEvents() handles being called reentrantly nicely.  That is, if in the course of raising events,\r\n *    raiseQueuedEvents() is called again, the \"inner\" call will pick up raising events where the \"outer\" call\r\n *    left off, ensuring that the events are still raised synchronously and in order.\r\n * 3. You can use raiseEventsAtPath and raiseEventsForChangedPath to ensure only relevant previously-queued\r\n *    events are raised synchronously.\r\n *\r\n * NOTE: This can all go away if/when we move to async events.\r\n *\r\n * @constructor\r\n */var EventQueue=/** @class */function(){function EventQueue(){/**\r\n         * @private\r\n         * @type {!Array.<EventList>}\r\n         */this.eventLists_=[];/**\r\n         * Tracks recursion depth of raiseQueuedEvents_, for debugging purposes.\r\n         * @private\r\n         * @type {!number}\r\n         */this.recursionDepth_=0;}/**\r\n     * @param {!Array.<Event>} eventDataList The new events to queue.\r\n     */EventQueue.prototype.queueEvents=function(eventDataList){// We group events by path, storing them in a single EventList, to make it easier to skip over them quickly.\nvar currList=null;for(var i=0;i<eventDataList.length;i++){var eventData=eventDataList[i];var eventPath=eventData.getPath();if(currList!==null&&!eventPath.equals(currList.getPath())){this.eventLists_.push(currList);currList=null;}if(currList===null){currList=new EventList(eventPath);}currList.add(eventData);}if(currList){this.eventLists_.push(currList);}};/**\r\n     * Queues the specified events and synchronously raises all events (including previously queued ones)\r\n     * for the specified path.\r\n     *\r\n     * It is assumed that the new events are all for the specified path.\r\n     *\r\n     * @param {!Path} path The path to raise events for.\r\n     * @param {!Array.<Event>} eventDataList The new events to raise.\r\n     */EventQueue.prototype.raiseEventsAtPath=function(path,eventDataList){this.queueEvents(eventDataList);this.raiseQueuedEventsMatchingPredicate_(function(eventPath){return eventPath.equals(path);});};/**\r\n     * Queues the specified events and synchronously raises all events (including previously queued ones) for\r\n     * locations related to the specified change path (i.e. all ancestors and descendants).\r\n     *\r\n     * It is assumed that the new events are all related (ancestor or descendant) to the specified path.\r\n     *\r\n     * @param {!Path} changedPath The path to raise events for.\r\n     * @param {!Array.<!Event>} eventDataList The events to raise\r\n     */EventQueue.prototype.raiseEventsForChangedPath=function(changedPath,eventDataList){this.queueEvents(eventDataList);this.raiseQueuedEventsMatchingPredicate_(function(eventPath){return eventPath.contains(changedPath)||changedPath.contains(eventPath);});};/**\r\n     * @param {!function(!Path):boolean} predicate\r\n     * @private\r\n     */EventQueue.prototype.raiseQueuedEventsMatchingPredicate_=function(predicate){this.recursionDepth_++;var sentAll=true;for(var i=0;i<this.eventLists_.length;i++){var eventList=this.eventLists_[i];if(eventList){var eventPath=eventList.getPath();if(predicate(eventPath)){this.eventLists_[i].raise();this.eventLists_[i]=null;}else{sentAll=false;}}}if(sentAll){this.eventLists_=[];}this.recursionDepth_--;};return EventQueue;}();/**\r\n * @param {!Path} path\r\n * @constructor\r\n */var EventList=/** @class */function(){function EventList(path_){this.path_=path_;/**\r\n         * @type {!Array.<Event>}\r\n         * @private\r\n         */this.events_=[];}/**\r\n     * @param {!Event} eventData\r\n     */EventList.prototype.add=function(eventData){this.events_.push(eventData);};/**\r\n     * Iterates through the list and raises each event\r\n     */EventList.prototype.raise=function(){for(var i=0;i<this.events_.length;i++){var eventData=this.events_[i];if(eventData!==null){this.events_[i]=null;var eventFn=eventData.getEventRunner();if(logger){log('event: '+eventData.toString());}exceptionGuard(eventFn);}}};/**\r\n     * @return {!Path}\r\n     */EventList.prototype.getPath=function(){return this.path_;};return EventList;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Base class to be used if you want to emit events. Call the constructor with\r\n * the set of allowed event names.\r\n */var EventEmitter=/** @class */function(){/**\r\n     * @param {!Array.<string>} allowedEvents_\r\n     */function EventEmitter(allowedEvents_){this.allowedEvents_=allowedEvents_;this.listeners_={};util.assert(Array.isArray(allowedEvents_)&&allowedEvents_.length>0,'Requires a non-empty array');}/**\r\n     * To be called by derived classes to trigger events.\r\n     * @param {!string} eventType\r\n     * @param {...*} var_args\r\n     */EventEmitter.prototype.trigger=function(eventType){var var_args=[];for(var _i=1;_i<arguments.length;_i++){var_args[_i-1]=arguments[_i];}if(Array.isArray(this.listeners_[eventType])){// Clone the list, since callbacks could add/remove listeners.\nvar listeners=this.listeners_[eventType].slice();for(var i=0;i<listeners.length;i++){listeners[i].callback.apply(listeners[i].context,var_args);}}};EventEmitter.prototype.on=function(eventType,callback,context){this.validateEventType_(eventType);this.listeners_[eventType]=this.listeners_[eventType]||[];this.listeners_[eventType].push({callback:callback,context:context});var eventData=this.getInitialEvent(eventType);if(eventData){callback.apply(context,eventData);}};EventEmitter.prototype.off=function(eventType,callback,context){this.validateEventType_(eventType);var listeners=this.listeners_[eventType]||[];for(var i=0;i<listeners.length;i++){if(listeners[i].callback===callback&&(!context||context===listeners[i].context)){listeners.splice(i,1);return;}}};EventEmitter.prototype.validateEventType_=function(eventType){util.assert(this.allowedEvents_.find(function(et){return et===eventType;}),'Unknown event: '+eventType);};return EventEmitter;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * @extends {EventEmitter}\r\n */var VisibilityMonitor=/** @class */function(_super){tslib_1.__extends(VisibilityMonitor,_super);function VisibilityMonitor(){var _this=_super.call(this,['visible'])||this;var hidden;var visibilityChange;if(typeof document!=='undefined'&&typeof document.addEventListener!=='undefined'){if(typeof document['hidden']!=='undefined'){// Opera 12.10 and Firefox 18 and later support\nvisibilityChange='visibilitychange';hidden='hidden';}else if(typeof document['mozHidden']!=='undefined'){visibilityChange='mozvisibilitychange';hidden='mozHidden';}else if(typeof document['msHidden']!=='undefined'){visibilityChange='msvisibilitychange';hidden='msHidden';}else if(typeof document['webkitHidden']!=='undefined'){visibilityChange='webkitvisibilitychange';hidden='webkitHidden';}}// Initially, we always assume we are visible. This ensures that in browsers\n// without page visibility support or in cases where we are never visible\n// (e.g. chrome extension), we act as if we are visible, i.e. don't delay\n// reconnects\n_this.visible_=true;if(visibilityChange){document.addEventListener(visibilityChange,function(){var visible=!document[hidden];if(visible!==_this.visible_){_this.visible_=visible;_this.trigger('visible',visible);}},false);}return _this;}VisibilityMonitor.getInstance=function(){return new VisibilityMonitor();};/**\r\n     * @param {!string} eventType\r\n     * @return {Array.<boolean>}\r\n     */VisibilityMonitor.prototype.getInitialEvent=function(eventType){util.assert(eventType==='visible','Unknown event type: '+eventType);return[this.visible_];};return VisibilityMonitor;}(EventEmitter);/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Monitors online state (as reported by window.online/offline events).\r\n *\r\n * The expectation is that this could have many false positives (thinks we are online\r\n * when we're not), but no false negatives.  So we can safely use it to determine when\r\n * we definitely cannot reach the internet.\r\n *\r\n * @extends {EventEmitter}\r\n */var OnlineMonitor=/** @class */function(_super){tslib_1.__extends(OnlineMonitor,_super);function OnlineMonitor(){var _this=_super.call(this,['online'])||this;_this.online_=true;// We've had repeated complaints that Cordova apps can get stuck \"offline\", e.g.\n// https://forum.ionicframework.com/t/firebase-connection-is-lost-and-never-come-back/43810\n// It would seem that the 'online' event does not always fire consistently. So we disable it\n// for Cordova.\nif(typeof window!=='undefined'&&typeof window.addEventListener!=='undefined'&&!util.isMobileCordova()){window.addEventListener('online',function(){if(!_this.online_){_this.online_=true;_this.trigger('online',true);}},false);window.addEventListener('offline',function(){if(_this.online_){_this.online_=false;_this.trigger('online',false);}},false);}return _this;}OnlineMonitor.getInstance=function(){return new OnlineMonitor();};/**\r\n     * @param {!string} eventType\r\n     * @return {Array.<boolean>}\r\n     */OnlineMonitor.prototype.getInitialEvent=function(eventType){util.assert(eventType==='online','Unknown event type: '+eventType);return[this.online_];};/**\r\n     * @return {boolean}\r\n     */OnlineMonitor.prototype.currentlyOnline=function(){return this.online_;};return OnlineMonitor;}(EventEmitter);/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * This class ensures the packets from the server arrive in order\r\n * This class takes data from the server and ensures it gets passed into the callbacks in order.\r\n * @constructor\r\n */var PacketReceiver=/** @class */function(){/**\r\n     * @param onMessage_\r\n     */function PacketReceiver(onMessage_){this.onMessage_=onMessage_;this.pendingResponses=[];this.currentResponseNum=0;this.closeAfterResponse=-1;this.onClose=null;}PacketReceiver.prototype.closeAfter=function(responseNum,callback){this.closeAfterResponse=responseNum;this.onClose=callback;if(this.closeAfterResponse<this.currentResponseNum){this.onClose();this.onClose=null;}};/**\r\n     * Each message from the server comes with a response number, and an array of data. The responseNumber\r\n     * allows us to ensure that we process them in the right order, since we can't be guaranteed that all\r\n     * browsers will respond in the same order as the requests we sent\r\n     * @param {number} requestNum\r\n     * @param {Array} data\r\n     */PacketReceiver.prototype.handleResponse=function(requestNum,data){var _this=this;this.pendingResponses[requestNum]=data;var _loop_1=function _loop_1(){var toProcess=this_1.pendingResponses[this_1.currentResponseNum];delete this_1.pendingResponses[this_1.currentResponseNum];var _loop_2=function _loop_2(i){if(toProcess[i]){exceptionGuard(function(){_this.onMessage_(toProcess[i]);});}};for(var i=0;i<toProcess.length;++i){_loop_2(i);}if(this_1.currentResponseNum===this_1.closeAfterResponse){if(this_1.onClose){this_1.onClose();this_1.onClose=null;}return\"break\";}this_1.currentResponseNum++;};var this_1=this;while(this.pendingResponses[this.currentResponseNum]){var state_1=_loop_1();if(state_1===\"break\")break;}};return PacketReceiver;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */// URL query parameters associated with longpolling\nvar FIREBASE_LONGPOLL_START_PARAM='start';var FIREBASE_LONGPOLL_CLOSE_COMMAND='close';var FIREBASE_LONGPOLL_COMMAND_CB_NAME='pLPCommand';var FIREBASE_LONGPOLL_DATA_CB_NAME='pRTLPCB';var FIREBASE_LONGPOLL_ID_PARAM='id';var FIREBASE_LONGPOLL_PW_PARAM='pw';var FIREBASE_LONGPOLL_SERIAL_PARAM='ser';var FIREBASE_LONGPOLL_CALLBACK_ID_PARAM='cb';var FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM='seg';var FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET='ts';var FIREBASE_LONGPOLL_DATA_PARAM='d';var FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM='disconn';var FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM='dframe';//Data size constants.\n//TODO: Perf: the maximum length actually differs from browser to browser.\n// We should check what browser we're on and set accordingly.\nvar MAX_URL_DATA_SIZE=1870;var SEG_HEADER_SIZE=30;//ie: &seg=8299234&ts=982389123&d=\nvar MAX_PAYLOAD_SIZE=MAX_URL_DATA_SIZE-SEG_HEADER_SIZE;/**\r\n * Keepalive period\r\n * send a fresh request at minimum every 25 seconds. Opera has a maximum request\r\n * length of 30 seconds that we can't exceed.\r\n * @const\r\n * @type {number}\r\n */var KEEPALIVE_REQUEST_INTERVAL=25000;/**\r\n * How long to wait before aborting a long-polling connection attempt.\r\n * @const\r\n * @type {number}\r\n */var LP_CONNECT_TIMEOUT=30000;/**\r\n * This class manages a single long-polling connection.\r\n *\r\n * @constructor\r\n * @implements {Transport}\r\n */var BrowserPollConnection=/** @class */function(){/**\r\n     * @param {string} connId An identifier for this connection, used for logging\r\n     * @param {RepoInfo} repoInfo The info for the endpoint to send data to.\r\n     * @param {string=} transportSessionId Optional transportSessionid if we are reconnecting for an existing\r\n     *                                         transport session\r\n     * @param {string=}  lastSessionId Optional lastSessionId if the PersistentConnection has already created a\r\n     *                                     connection previously\r\n     */function BrowserPollConnection(connId,repoInfo,transportSessionId,lastSessionId){this.connId=connId;this.repoInfo=repoInfo;this.transportSessionId=transportSessionId;this.lastSessionId=lastSessionId;this.bytesSent=0;this.bytesReceived=0;this.everConnected_=false;this.log_=logWrapper(connId);this.stats_=StatsManager.getCollection(repoInfo);this.urlFn=function(params){return repoInfo.connectionURL(LONG_POLLING,params);};}/**\r\n     *\r\n     * @param {function(Object)} onMessage Callback when messages arrive\r\n     * @param {function()} onDisconnect Callback with connection lost.\r\n     */BrowserPollConnection.prototype.open=function(onMessage,onDisconnect){var _this=this;this.curSegmentNum=0;this.onDisconnect_=onDisconnect;this.myPacketOrderer=new PacketReceiver(onMessage);this.isClosed_=false;this.connectTimeoutTimer_=setTimeout(function(){_this.log_('Timed out trying to connect.');// Make sure we clear the host cache\n_this.onClosed_();_this.connectTimeoutTimer_=null;},Math.floor(LP_CONNECT_TIMEOUT));// Ensure we delay the creation of the iframe until the DOM is loaded.\nexecuteWhenDOMReady(function(){if(_this.isClosed_)return;//Set up a callback that gets triggered once a connection is set up.\n_this.scriptTagHolder=new FirebaseIFrameScriptHolder(function(){var args=[];for(var _i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}var command=args[0],arg1=args[1],arg2=args[2];_this.incrementIncomingBytes_(args);if(!_this.scriptTagHolder)return;// we closed the connection.\nif(_this.connectTimeoutTimer_){clearTimeout(_this.connectTimeoutTimer_);_this.connectTimeoutTimer_=null;}_this.everConnected_=true;if(command==FIREBASE_LONGPOLL_START_PARAM){_this.id=arg1;_this.password=arg2;}else if(command===FIREBASE_LONGPOLL_CLOSE_COMMAND){// Don't clear the host cache. We got a response from the server, so we know it's reachable\nif(arg1){// We aren't expecting any more data (other than what the server's already in the process of sending us\n// through our already open polls), so don't send any more.\n_this.scriptTagHolder.sendNewPolls=false;// arg1 in this case is the last response number sent by the server. We should try to receive\n// all of the responses up to this one before closing\n_this.myPacketOrderer.closeAfter(arg1,function(){_this.onClosed_();});}else{_this.onClosed_();}}else{throw new Error('Unrecognized command received: '+command);}},function(){var args=[];for(var _i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}var pN=args[0],data=args[1];_this.incrementIncomingBytes_(args);_this.myPacketOrderer.handleResponse(pN,data);},function(){_this.onClosed_();},_this.urlFn);//Send the initial request to connect. The serial number is simply to keep the browser from pulling previous results\n//from cache.\nvar urlParams={};urlParams[FIREBASE_LONGPOLL_START_PARAM]='t';urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM]=Math.floor(Math.random()*100000000);if(_this.scriptTagHolder.uniqueCallbackIdentifier)urlParams[FIREBASE_LONGPOLL_CALLBACK_ID_PARAM]=_this.scriptTagHolder.uniqueCallbackIdentifier;urlParams[VERSION_PARAM]=PROTOCOL_VERSION;if(_this.transportSessionId){urlParams[TRANSPORT_SESSION_PARAM]=_this.transportSessionId;}if(_this.lastSessionId){urlParams[LAST_SESSION_PARAM]=_this.lastSessionId;}if(!util.isNodeSdk()&&typeof location!=='undefined'&&location.href&&location.href.indexOf(FORGE_DOMAIN)!==-1){urlParams[REFERER_PARAM]=FORGE_REF;}var connectURL=_this.urlFn(urlParams);_this.log_('Connecting via long-poll to '+connectURL);_this.scriptTagHolder.addTag(connectURL,function(){/* do nothing */});});};/**\r\n     * Call this when a handshake has completed successfully and we want to consider the connection established\r\n     */BrowserPollConnection.prototype.start=function(){this.scriptTagHolder.startLongPoll(this.id,this.password);this.addDisconnectPingFrame(this.id,this.password);};/**\r\n     * Forces long polling to be considered as a potential transport\r\n     */BrowserPollConnection.forceAllow=function(){BrowserPollConnection.forceAllow_=true;};/**\r\n     * Forces longpolling to not be considered as a potential transport\r\n     */BrowserPollConnection.forceDisallow=function(){BrowserPollConnection.forceDisallow_=true;};// Static method, use string literal so it can be accessed in a generic way\nBrowserPollConnection.isAvailable=function(){// NOTE: In React-Native there's normally no 'document', but if you debug a React-Native app in\n// the Chrome debugger, 'document' is defined, but document.createElement is null (2015/06/08).\nreturn BrowserPollConnection.forceAllow_||!BrowserPollConnection.forceDisallow_&&typeof document!=='undefined'&&document.createElement!=null&&!isChromeExtensionContentScript()&&!isWindowsStoreApp()&&!util.isNodeSdk();};/**\r\n     * No-op for polling\r\n     */BrowserPollConnection.prototype.markConnectionHealthy=function(){};/**\r\n     * Stops polling and cleans up the iframe\r\n     * @private\r\n     */BrowserPollConnection.prototype.shutdown_=function(){this.isClosed_=true;if(this.scriptTagHolder){this.scriptTagHolder.close();this.scriptTagHolder=null;}//remove the disconnect frame, which will trigger an XHR call to the server to tell it we're leaving.\nif(this.myDisconnFrame){document.body.removeChild(this.myDisconnFrame);this.myDisconnFrame=null;}if(this.connectTimeoutTimer_){clearTimeout(this.connectTimeoutTimer_);this.connectTimeoutTimer_=null;}};/**\r\n     * Triggered when this transport is closed\r\n     * @private\r\n     */BrowserPollConnection.prototype.onClosed_=function(){if(!this.isClosed_){this.log_('Longpoll is closing itself');this.shutdown_();if(this.onDisconnect_){this.onDisconnect_(this.everConnected_);this.onDisconnect_=null;}}};/**\r\n     * External-facing close handler. RealTime has requested we shut down. Kill our connection and tell the server\r\n     * that we've left.\r\n     */BrowserPollConnection.prototype.close=function(){if(!this.isClosed_){this.log_('Longpoll is being closed.');this.shutdown_();}};/**\r\n     * Send the JSON object down to the server. It will need to be stringified, base64 encoded, and then\r\n     * broken into chunks (since URLs have a small maximum length).\r\n     * @param {!Object} data The JSON data to transmit.\r\n     */BrowserPollConnection.prototype.send=function(data){var dataStr=util.stringify(data);this.bytesSent+=dataStr.length;this.stats_.incrementCounter('bytes_sent',dataStr.length);//first, lets get the base64-encoded data\nvar base64data=util.base64Encode(dataStr);//We can only fit a certain amount in each URL, so we need to split this request\n//up into multiple pieces if it doesn't fit in one request.\nvar dataSegs=splitStringBySize(base64data,MAX_PAYLOAD_SIZE);//Enqueue each segment for transmission. We assign each chunk a sequential ID and a total number\n//of segments so that we can reassemble the packet on the server.\nfor(var i=0;i<dataSegs.length;i++){this.scriptTagHolder.enqueueSegment(this.curSegmentNum,dataSegs.length,dataSegs[i]);this.curSegmentNum++;}};/**\r\n     * This is how we notify the server that we're leaving.\r\n     * We aren't able to send requests with DHTML on a window close event, but we can\r\n     * trigger XHR requests in some browsers (everything but Opera basically).\r\n     * @param {!string} id\r\n     * @param {!string} pw\r\n     */BrowserPollConnection.prototype.addDisconnectPingFrame=function(id,pw){if(util.isNodeSdk())return;this.myDisconnFrame=document.createElement('iframe');var urlParams={};urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM]='t';urlParams[FIREBASE_LONGPOLL_ID_PARAM]=id;urlParams[FIREBASE_LONGPOLL_PW_PARAM]=pw;this.myDisconnFrame.src=this.urlFn(urlParams);this.myDisconnFrame.style.display='none';document.body.appendChild(this.myDisconnFrame);};/**\r\n     * Used to track the bytes received by this client\r\n     * @param {*} args\r\n     * @private\r\n     */BrowserPollConnection.prototype.incrementIncomingBytes_=function(args){// TODO: This is an annoying perf hit just to track the number of incoming bytes.  Maybe it should be opt-in.\nvar bytesReceived=util.stringify(args).length;this.bytesReceived+=bytesReceived;this.stats_.incrementCounter('bytes_received',bytesReceived);};return BrowserPollConnection;}();/*********************************************************************************************\r\n * A wrapper around an iframe that is used as a long-polling script holder.\r\n * @constructor\r\n *********************************************************************************************/var FirebaseIFrameScriptHolder=/** @class */function(){/**\r\n     * @param commandCB - The callback to be called when control commands are recevied from the server.\r\n     * @param onMessageCB - The callback to be triggered when responses arrive from the server.\r\n     * @param onDisconnect - The callback to be triggered when this tag holder is closed\r\n     * @param urlFn - A function that provides the URL of the endpoint to send data to.\r\n     */function FirebaseIFrameScriptHolder(commandCB,onMessageCB,onDisconnect,urlFn){this.onDisconnect=onDisconnect;this.urlFn=urlFn;//We maintain a count of all of the outstanding requests, because if we have too many active at once it can cause\n//problems in some browsers.\n/**\r\n         * @type {CountedSet.<number, number>}\r\n         */this.outstandingRequests=new CountedSet();//A queue of the pending segments waiting for transmission to the server.\nthis.pendingSegs=[];//A serial number. We use this for two things:\n// 1) A way to ensure the browser doesn't cache responses to polls\n// 2) A way to make the server aware when long-polls arrive in a different order than we started them. The\n//    server needs to release both polls in this case or it will cause problems in Opera since Opera can only execute\n//    JSONP code in the order it was added to the iframe.\nthis.currentSerial=Math.floor(Math.random()*100000000);// This gets set to false when we're \"closing down\" the connection (e.g. we're switching transports but there's still\n// incoming data from the server that we're waiting for).\nthis.sendNewPolls=true;if(!util.isNodeSdk()){//Each script holder registers a couple of uniquely named callbacks with the window. These are called from the\n//iframes where we put the long-polling script tags. We have two callbacks:\n//   1) Command Callback - Triggered for control issues, like starting a connection.\n//   2) Message Callback - Triggered when new data arrives.\nthis.uniqueCallbackIdentifier=LUIDGenerator();window[FIREBASE_LONGPOLL_COMMAND_CB_NAME+this.uniqueCallbackIdentifier]=commandCB;window[FIREBASE_LONGPOLL_DATA_CB_NAME+this.uniqueCallbackIdentifier]=onMessageCB;//Create an iframe for us to add script tags to.\nthis.myIFrame=FirebaseIFrameScriptHolder.createIFrame_();// Set the iframe's contents.\nvar script='';// if we set a javascript url, it's IE and we need to set the document domain. The javascript url is sufficient\n// for ie9, but ie8 needs to do it again in the document itself.\nif(this.myIFrame.src&&this.myIFrame.src.substr(0,'javascript:'.length)==='javascript:'){var currentDomain=document.domain;script='<script>document.domain=\"'+currentDomain+'\";</script>';}var iframeContents='<html><body>'+script+'</body></html>';try{this.myIFrame.doc.open();this.myIFrame.doc.write(iframeContents);this.myIFrame.doc.close();}catch(e){log('frame writing exception');if(e.stack){log(e.stack);}log(e);}}else{this.commandCB=commandCB;this.onMessageCB=onMessageCB;}}/**\r\n     * Each browser has its own funny way to handle iframes. Here we mush them all together into one object that I can\r\n     * actually use.\r\n     * @private\r\n     * @return {Element}\r\n     */FirebaseIFrameScriptHolder.createIFrame_=function(){var iframe=document.createElement('iframe');iframe.style.display='none';// This is necessary in order to initialize the document inside the iframe\nif(document.body){document.body.appendChild(iframe);try{// If document.domain has been modified in IE, this will throw an error, and we need to set the\n// domain of the iframe's document manually. We can do this via a javascript: url as the src attribute\n// Also note that we must do this *after* the iframe has been appended to the page. Otherwise it doesn't work.\nvar a=iframe.contentWindow.document;if(!a){// Apologies for the log-spam, I need to do something to keep closure from optimizing out the assignment above.\nlog('No IE domain setting required');}}catch(e){var domain=document.domain;iframe.src=\"javascript:void((function(){document.open();document.domain='\"+domain+\"';document.close();})())\";}}else{// LongPollConnection attempts to delay initialization until the document is ready, so hopefully this\n// never gets hit.\nthrow'Document body has not initialized. Wait to initialize Firebase until after the document is ready.';}// Get the document of the iframe in a browser-specific way.\nif(iframe.contentDocument){iframe.doc=iframe.contentDocument;// Firefox, Opera, Safari\n}else if(iframe.contentWindow){iframe.doc=iframe.contentWindow.document;// Internet Explorer\n}else if(iframe.document){iframe.doc=iframe.document;//others?\n}return iframe;};/**\r\n     * Cancel all outstanding queries and remove the frame.\r\n     */FirebaseIFrameScriptHolder.prototype.close=function(){var _this=this;//Mark this iframe as dead, so no new requests are sent.\nthis.alive=false;if(this.myIFrame){//We have to actually remove all of the html inside this iframe before removing it from the\n//window, or IE will continue loading and executing the script tags we've already added, which\n//can lead to some errors being thrown. Setting innerHTML seems to be the easiest way to do this.\nthis.myIFrame.doc.body.innerHTML='';setTimeout(function(){if(_this.myIFrame!==null){document.body.removeChild(_this.myIFrame);_this.myIFrame=null;}},Math.floor(0));}if(util.isNodeSdk()&&this.myID){var urlParams={};urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM]='t';urlParams[FIREBASE_LONGPOLL_ID_PARAM]=this.myID;urlParams[FIREBASE_LONGPOLL_PW_PARAM]=this.myPW;var theURL=this.urlFn(urlParams);FirebaseIFrameScriptHolder.nodeRestRequest(theURL);}// Protect from being called recursively.\nvar onDisconnect=this.onDisconnect;if(onDisconnect){this.onDisconnect=null;onDisconnect();}};/**\r\n     * Actually start the long-polling session by adding the first script tag(s) to the iframe.\r\n     * @param {!string} id - The ID of this connection\r\n     * @param {!string} pw - The password for this connection\r\n     */FirebaseIFrameScriptHolder.prototype.startLongPoll=function(id,pw){this.myID=id;this.myPW=pw;this.alive=true;//send the initial request. If there are requests queued, make sure that we transmit as many as we are currently able to.\nwhile(this.newRequest_()){}};/**\r\n     * This is called any time someone might want a script tag to be added. It adds a script tag when there aren't\r\n     * too many outstanding requests and we are still alive.\r\n     *\r\n     * If there are outstanding packet segments to send, it sends one. If there aren't, it sends a long-poll anyways if\r\n     * needed.\r\n     */FirebaseIFrameScriptHolder.prototype.newRequest_=function(){// We keep one outstanding request open all the time to receive data, but if we need to send data\n// (pendingSegs.length > 0) then we create a new request to send the data.  The server will automatically\n// close the old request.\nif(this.alive&&this.sendNewPolls&&this.outstandingRequests.count()<(this.pendingSegs.length>0?2:1)){//construct our url\nthis.currentSerial++;var urlParams={};urlParams[FIREBASE_LONGPOLL_ID_PARAM]=this.myID;urlParams[FIREBASE_LONGPOLL_PW_PARAM]=this.myPW;urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM]=this.currentSerial;var theURL=this.urlFn(urlParams);//Now add as much data as we can.\nvar curDataString='';var i=0;while(this.pendingSegs.length>0){//first, lets see if the next segment will fit.\nvar nextSeg=this.pendingSegs[0];if(nextSeg.d.length+SEG_HEADER_SIZE+curDataString.length<=MAX_URL_DATA_SIZE){//great, the segment will fit. Lets append it.\nvar theSeg=this.pendingSegs.shift();curDataString=curDataString+'&'+FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM+i+'='+theSeg.seg+'&'+FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET+i+'='+theSeg.ts+'&'+FIREBASE_LONGPOLL_DATA_PARAM+i+'='+theSeg.d;i++;}else{break;}}theURL=theURL+curDataString;this.addLongPollTag_(theURL,this.currentSerial);return true;}else{return false;}};/**\r\n     * Queue a packet for transmission to the server.\r\n     * @param segnum - A sequential id for this packet segment used for reassembly\r\n     * @param totalsegs - The total number of segments in this packet\r\n     * @param data - The data for this segment.\r\n     */FirebaseIFrameScriptHolder.prototype.enqueueSegment=function(segnum,totalsegs,data){//add this to the queue of segments to send.\nthis.pendingSegs.push({seg:segnum,ts:totalsegs,d:data});//send the data immediately if there isn't already data being transmitted, unless\n//startLongPoll hasn't been called yet.\nif(this.alive){this.newRequest_();}};/**\r\n     * Add a script tag for a regular long-poll request.\r\n     * @param {!string} url - The URL of the script tag.\r\n     * @param {!number} serial - The serial number of the request.\r\n     * @private\r\n     */FirebaseIFrameScriptHolder.prototype.addLongPollTag_=function(url,serial){var _this=this;//remember that we sent this request.\nthis.outstandingRequests.add(serial,1);var doNewRequest=function doNewRequest(){_this.outstandingRequests.remove(serial);_this.newRequest_();};// If this request doesn't return on its own accord (by the server sending us some data), we'll\n// create a new one after the KEEPALIVE interval to make sure we always keep a fresh request open.\nvar keepaliveTimeout=setTimeout(doNewRequest,Math.floor(KEEPALIVE_REQUEST_INTERVAL));var readyStateCB=function readyStateCB(){// Request completed.  Cancel the keepalive.\nclearTimeout(keepaliveTimeout);// Trigger a new request so we can continue receiving data.\ndoNewRequest();};this.addTag(url,readyStateCB);};/**\r\n     * Add an arbitrary script tag to the iframe.\r\n     * @param {!string} url - The URL for the script tag source.\r\n     * @param {!function()} loadCB - A callback to be triggered once the script has loaded.\r\n     */FirebaseIFrameScriptHolder.prototype.addTag=function(url,loadCB){var _this=this;if(util.isNodeSdk()){this.doNodeLongPoll(url,loadCB);}else{setTimeout(function(){try{// if we're already closed, don't add this poll\nif(!_this.sendNewPolls)return;var newScript_1=_this.myIFrame.doc.createElement('script');newScript_1.type='text/javascript';newScript_1.async=true;newScript_1.src=url;newScript_1.onload=newScript_1.onreadystatechange=function(){var rstate=newScript_1.readyState;if(!rstate||rstate==='loaded'||rstate==='complete'){newScript_1.onload=newScript_1.onreadystatechange=null;if(newScript_1.parentNode){newScript_1.parentNode.removeChild(newScript_1);}loadCB();}};newScript_1.onerror=function(){log('Long-poll script failed to load: '+url);_this.sendNewPolls=false;_this.close();};_this.myIFrame.doc.body.appendChild(newScript_1);}catch(e){// TODO: we should make this error visible somehow\n}},Math.floor(1));}};return FirebaseIFrameScriptHolder;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var WEBSOCKET_MAX_FRAME_SIZE=16384;var WEBSOCKET_KEEPALIVE_INTERVAL=45000;var WebSocketImpl=null;if(typeof MozWebSocket!=='undefined'){WebSocketImpl=MozWebSocket;}else if(typeof WebSocket!=='undefined'){WebSocketImpl=WebSocket;}/**\r\n * Create a new websocket connection with the given callbacks.\r\n * @constructor\r\n * @implements {Transport}\r\n */var WebSocketConnection=/** @class */function(){/**\r\n     * @param {string} connId identifier for this transport\r\n     * @param {RepoInfo} repoInfo The info for the websocket endpoint.\r\n     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport\r\n     *                                         session\r\n     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection\r\n     */function WebSocketConnection(connId,repoInfo,transportSessionId,lastSessionId){this.connId=connId;this.keepaliveTimer=null;this.frames=null;this.totalFrames=0;this.bytesSent=0;this.bytesReceived=0;this.log_=logWrapper(this.connId);this.stats_=StatsManager.getCollection(repoInfo);this.connURL=WebSocketConnection.connectionURL_(repoInfo,transportSessionId,lastSessionId);}/**\r\n     * @param {RepoInfo} repoInfo The info for the websocket endpoint.\r\n     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport\r\n     *                                         session\r\n     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection\r\n     * @return {string} connection url\r\n     * @private\r\n     */WebSocketConnection.connectionURL_=function(repoInfo,transportSessionId,lastSessionId){var urlParams={};urlParams[VERSION_PARAM]=PROTOCOL_VERSION;if(!util.isNodeSdk()&&typeof location!=='undefined'&&location.href&&location.href.indexOf(FORGE_DOMAIN)!==-1){urlParams[REFERER_PARAM]=FORGE_REF;}if(transportSessionId){urlParams[TRANSPORT_SESSION_PARAM]=transportSessionId;}if(lastSessionId){urlParams[LAST_SESSION_PARAM]=lastSessionId;}return repoInfo.connectionURL(WEBSOCKET,urlParams);};/**\r\n     *\r\n     * @param onMessage Callback when messages arrive\r\n     * @param onDisconnect Callback with connection lost.\r\n     */WebSocketConnection.prototype.open=function(onMessage,onDisconnect){var _this=this;this.onDisconnect=onDisconnect;this.onMessage=onMessage;this.log_('Websocket connecting to '+this.connURL);this.everConnected_=false;// Assume failure until proven otherwise.\nPersistentStorage.set('previous_websocket_failure',true);try{if(util.isNodeSdk()){var device=util.CONSTANTS.NODE_ADMIN?'AdminNode':'Node';// UA Format: Firebase/<wire_protocol>/<sdk_version>/<platform>/<device>\nvar options={headers:{'User-Agent':\"Firebase/\"+PROTOCOL_VERSION+\"/\"+firebase.SDK_VERSION+\"/\"+process.platform+\"/\"+device}};// Plumb appropriate http_proxy environment variable into faye-websocket if it exists.\nvar env=process['env'];var proxy=this.connURL.indexOf('wss://')==0?env['HTTPS_PROXY']||env['https_proxy']:env['HTTP_PROXY']||env['http_proxy'];if(proxy){options['proxy']={origin:proxy};}this.mySock=new WebSocketImpl(this.connURL,[],options);}else{this.mySock=new WebSocketImpl(this.connURL);}}catch(e){this.log_('Error instantiating WebSocket.');var error=e.message||e.data;if(error){this.log_(error);}this.onClosed_();return;}this.mySock.onopen=function(){_this.log_('Websocket connected.');_this.everConnected_=true;};this.mySock.onclose=function(){_this.log_('Websocket connection was disconnected.');_this.mySock=null;_this.onClosed_();};this.mySock.onmessage=function(m){_this.handleIncomingFrame(m);};this.mySock.onerror=function(e){_this.log_('WebSocket error.  Closing connection.');var error=e.message||e.data;if(error){_this.log_(error);}_this.onClosed_();};};/**\r\n     * No-op for websockets, we don't need to do anything once the connection is confirmed as open\r\n     */WebSocketConnection.prototype.start=function(){};WebSocketConnection.forceDisallow=function(){WebSocketConnection.forceDisallow_=true;};WebSocketConnection.isAvailable=function(){var isOldAndroid=false;if(typeof navigator!=='undefined'&&navigator.userAgent){var oldAndroidRegex=/Android ([0-9]{0,}\\.[0-9]{0,})/;var oldAndroidMatch=navigator.userAgent.match(oldAndroidRegex);if(oldAndroidMatch&&oldAndroidMatch.length>1){if(parseFloat(oldAndroidMatch[1])<4.4){isOldAndroid=true;}}}return!isOldAndroid&&WebSocketImpl!==null&&!WebSocketConnection.forceDisallow_;};/**\r\n     * Returns true if we previously failed to connect with this transport.\r\n     * @return {boolean}\r\n     */WebSocketConnection.previouslyFailed=function(){// If our persistent storage is actually only in-memory storage,\n// we default to assuming that it previously failed to be safe.\nreturn PersistentStorage.isInMemoryStorage||PersistentStorage.get('previous_websocket_failure')===true;};WebSocketConnection.prototype.markConnectionHealthy=function(){PersistentStorage.remove('previous_websocket_failure');};WebSocketConnection.prototype.appendFrame_=function(data){this.frames.push(data);if(this.frames.length==this.totalFrames){var fullMess=this.frames.join('');this.frames=null;var jsonMess=util.jsonEval(fullMess);//handle the message\nthis.onMessage(jsonMess);}};/**\r\n     * @param {number} frameCount The number of frames we are expecting from the server\r\n     * @private\r\n     */WebSocketConnection.prototype.handleNewFrameCount_=function(frameCount){this.totalFrames=frameCount;this.frames=[];};/**\r\n     * Attempts to parse a frame count out of some text. If it can't, assumes a value of 1\r\n     * @param {!String} data\r\n     * @return {?String} Any remaining data to be process, or null if there is none\r\n     * @private\r\n     */WebSocketConnection.prototype.extractFrameCount_=function(data){util.assert(this.frames===null,'We already have a frame buffer');// TODO: The server is only supposed to send up to 9999 frames (i.e. length <= 4), but that isn't being enforced\n// currently.  So allowing larger frame counts (length <= 6).  See https://app.asana.com/0/search/8688598998380/8237608042508\nif(data.length<=6){var frameCount=Number(data);if(!isNaN(frameCount)){this.handleNewFrameCount_(frameCount);return null;}}this.handleNewFrameCount_(1);return data;};/**\r\n     * Process a websocket frame that has arrived from the server.\r\n     * @param mess The frame data\r\n     */WebSocketConnection.prototype.handleIncomingFrame=function(mess){if(this.mySock===null)return;// Chrome apparently delivers incoming packets even after we .close() the connection sometimes.\nvar data=mess['data'];this.bytesReceived+=data.length;this.stats_.incrementCounter('bytes_received',data.length);this.resetKeepAlive();if(this.frames!==null){// we're buffering\nthis.appendFrame_(data);}else{// try to parse out a frame count, otherwise, assume 1 and process it\nvar remainingData=this.extractFrameCount_(data);if(remainingData!==null){this.appendFrame_(remainingData);}}};/**\r\n     * Send a message to the server\r\n     * @param {Object} data The JSON object to transmit\r\n     */WebSocketConnection.prototype.send=function(data){this.resetKeepAlive();var dataStr=util.stringify(data);this.bytesSent+=dataStr.length;this.stats_.incrementCounter('bytes_sent',dataStr.length);//We can only fit a certain amount in each websocket frame, so we need to split this request\n//up into multiple pieces if it doesn't fit in one request.\nvar dataSegs=splitStringBySize(dataStr,WEBSOCKET_MAX_FRAME_SIZE);//Send the length header\nif(dataSegs.length>1){this.sendString_(String(dataSegs.length));}//Send the actual data in segments.\nfor(var i=0;i<dataSegs.length;i++){this.sendString_(dataSegs[i]);}};WebSocketConnection.prototype.shutdown_=function(){this.isClosed_=true;if(this.keepaliveTimer){clearInterval(this.keepaliveTimer);this.keepaliveTimer=null;}if(this.mySock){this.mySock.close();this.mySock=null;}};WebSocketConnection.prototype.onClosed_=function(){if(!this.isClosed_){this.log_('WebSocket is closing itself');this.shutdown_();// since this is an internal close, trigger the close listener\nif(this.onDisconnect){this.onDisconnect(this.everConnected_);this.onDisconnect=null;}}};/**\r\n     * External-facing close handler.\r\n     * Close the websocket and kill the connection.\r\n     */WebSocketConnection.prototype.close=function(){if(!this.isClosed_){this.log_('WebSocket is being closed');this.shutdown_();}};/**\r\n     * Kill the current keepalive timer and start a new one, to ensure that it always fires N seconds after\r\n     * the last activity.\r\n     */WebSocketConnection.prototype.resetKeepAlive=function(){var _this=this;clearInterval(this.keepaliveTimer);this.keepaliveTimer=setInterval(function(){//If there has been no websocket activity for a while, send a no-op\nif(_this.mySock){_this.sendString_('0');}_this.resetKeepAlive();},Math.floor(WEBSOCKET_KEEPALIVE_INTERVAL));};/**\r\n     * Send a string over the websocket.\r\n     *\r\n     * @param {string} str String to send.\r\n     * @private\r\n     */WebSocketConnection.prototype.sendString_=function(str){// Firefox seems to sometimes throw exceptions (NS_ERROR_UNEXPECTED) from websocket .send()\n// calls for some unknown reason.  We treat these as an error and disconnect.\n// See https://app.asana.com/0/58926111402292/68021340250410\ntry{this.mySock.send(str);}catch(e){this.log_('Exception thrown from WebSocket.send():',e.message||e.data,'Closing connection.');setTimeout(this.onClosed_.bind(this),0);}};/**\r\n     * Number of response before we consider the connection \"healthy.\"\r\n     * @type {number}\r\n     */WebSocketConnection.responsesRequiredToBeHealthy=2;/**\r\n     * Time to wait for the connection te become healthy before giving up.\r\n     * @type {number}\r\n     */WebSocketConnection.healthyTimeout=30000;return WebSocketConnection;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Currently simplistic, this class manages what transport a Connection should use at various stages of its\r\n * lifecycle.\r\n *\r\n * It starts with longpolling in a browser, and httppolling on node. It then upgrades to websockets if\r\n * they are available.\r\n * @constructor\r\n */var TransportManager=/** @class */function(){/**\r\n     * @param {!RepoInfo} repoInfo Metadata around the namespace we're connecting to\r\n     */function TransportManager(repoInfo){this.initTransports_(repoInfo);}Object.defineProperty(TransportManager,\"ALL_TRANSPORTS\",{/**\r\n         * @const\r\n         * @type {!Array.<function(new:Transport, string, RepoInfo, string=)>}\r\n         */get:function get(){return[BrowserPollConnection,WebSocketConnection];},enumerable:true,configurable:true});/**\r\n     * @param {!RepoInfo} repoInfo\r\n     * @private\r\n     */TransportManager.prototype.initTransports_=function(repoInfo){var isWebSocketsAvailable=WebSocketConnection&&WebSocketConnection['isAvailable']();var isSkipPollConnection=isWebSocketsAvailable&&!WebSocketConnection.previouslyFailed();if(repoInfo.webSocketOnly){if(!isWebSocketsAvailable)warn(\"wss:// URL used, but browser isn't known to support websockets.  Trying anyway.\");isSkipPollConnection=true;}if(isSkipPollConnection){this.transports_=[WebSocketConnection];}else{var transports_1=this.transports_=[];each(TransportManager.ALL_TRANSPORTS,function(i,transport){if(transport&&transport['isAvailable']()){transports_1.push(transport);}});}};/**\r\n     * @return {function(new:Transport, !string, !RepoInfo, string=, string=)} The constructor for the\r\n     * initial transport to use\r\n     */TransportManager.prototype.initialTransport=function(){if(this.transports_.length>0){return this.transports_[0];}else{throw new Error('No transports available');}};/**\r\n     * @return {?function(new:Transport, function(),function(), string=)} The constructor for the next\r\n     * transport, or null\r\n     */TransportManager.prototype.upgradeTransport=function(){if(this.transports_.length>1){return this.transports_[1];}else{return null;}};return TransportManager;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */// Abort upgrade attempt if it takes longer than 60s.\nvar UPGRADE_TIMEOUT=60000;// For some transports (WebSockets), we need to \"validate\" the transport by exchanging a few requests and responses.\n// If we haven't sent enough requests within 5s, we'll start sending noop ping requests.\nvar DELAY_BEFORE_SENDING_EXTRA_REQUESTS=5000;// If the initial data sent triggers a lot of bandwidth (i.e. it's a large put or a listen for a large amount of data)\n// then we may not be able to exchange our ping/pong requests within the healthy timeout.  So if we reach the timeout\n// but we've sent/received enough bytes, we don't cancel the connection.\nvar BYTES_SENT_HEALTHY_OVERRIDE=10*1024;var BYTES_RECEIVED_HEALTHY_OVERRIDE=100*1024;var MESSAGE_TYPE='t';var MESSAGE_DATA='d';var CONTROL_SHUTDOWN='s';var CONTROL_RESET='r';var CONTROL_ERROR='e';var CONTROL_PONG='o';var SWITCH_ACK='a';var END_TRANSMISSION='n';var PING='p';var SERVER_HELLO='h';/**\r\n * Creates a new real-time connection to the server using whichever method works\r\n * best in the current browser.\r\n *\r\n * @constructor\r\n */var Connection=/** @class */function(){/**\r\n     * @param {!string} id - an id for this connection\r\n     * @param {!RepoInfo} repoInfo_ - the info for the endpoint to connect to\r\n     * @param {function(Object)} onMessage_ - the callback to be triggered when a server-push message arrives\r\n     * @param {function(number, string)} onReady_ - the callback to be triggered when this connection is ready to send messages.\r\n     * @param {function()} onDisconnect_ - the callback to be triggered when a connection was lost\r\n     * @param {function(string)} onKill_ - the callback to be triggered when this connection has permanently shut down.\r\n     * @param {string=} lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server\r\n     */function Connection(id,repoInfo_,onMessage_,onReady_,onDisconnect_,onKill_,lastSessionId){this.id=id;this.repoInfo_=repoInfo_;this.onMessage_=onMessage_;this.onReady_=onReady_;this.onDisconnect_=onDisconnect_;this.onKill_=onKill_;this.lastSessionId=lastSessionId;this.connectionCount=0;this.pendingDataMessages=[];this.state_=0/* CONNECTING */;this.log_=logWrapper('c:'+this.id+':');this.transportManager_=new TransportManager(repoInfo_);this.log_('Connection created');this.start_();}/**\r\n     * Starts a connection attempt\r\n     * @private\r\n     */Connection.prototype.start_=function(){var _this=this;var conn=this.transportManager_.initialTransport();this.conn_=new conn(this.nextTransportId_(),this.repoInfo_,undefined,this.lastSessionId);// For certain transports (WebSockets), we need to send and receive several messages back and forth before we\n// can consider the transport healthy.\nthis.primaryResponsesRequired_=conn['responsesRequiredToBeHealthy']||0;var onMessageReceived=this.connReceiver_(this.conn_);var onConnectionLost=this.disconnReceiver_(this.conn_);this.tx_=this.conn_;this.rx_=this.conn_;this.secondaryConn_=null;this.isHealthy_=false;/*\r\n         * Firefox doesn't like when code from one iframe tries to create another iframe by way of the parent frame.\r\n         * This can occur in the case of a redirect, i.e. we guessed wrong on what server to connect to and received a reset.\r\n         * Somehow, setTimeout seems to make this ok. That doesn't make sense from a security perspective, since you should\r\n         * still have the context of your originating frame.\r\n         */setTimeout(function(){// this.conn_ gets set to null in some of the tests. Check to make sure it still exists before using it\n_this.conn_&&_this.conn_.open(onMessageReceived,onConnectionLost);},Math.floor(0));var healthyTimeout_ms=conn['healthyTimeout']||0;if(healthyTimeout_ms>0){this.healthyTimeout_=setTimeoutNonBlocking(function(){_this.healthyTimeout_=null;if(!_this.isHealthy_){if(_this.conn_&&_this.conn_.bytesReceived>BYTES_RECEIVED_HEALTHY_OVERRIDE){_this.log_('Connection exceeded healthy timeout but has received '+_this.conn_.bytesReceived+' bytes.  Marking connection healthy.');_this.isHealthy_=true;_this.conn_.markConnectionHealthy();}else if(_this.conn_&&_this.conn_.bytesSent>BYTES_SENT_HEALTHY_OVERRIDE){_this.log_('Connection exceeded healthy timeout but has sent '+_this.conn_.bytesSent+' bytes.  Leaving connection alive.');// NOTE: We don't want to mark it healthy, since we have no guarantee that the bytes have made it to\n// the server.\n}else{_this.log_('Closing unhealthy connection after timeout.');_this.close();}}},Math.floor(healthyTimeout_ms));}};/**\r\n     * @return {!string}\r\n     * @private\r\n     */Connection.prototype.nextTransportId_=function(){return'c:'+this.id+':'+this.connectionCount++;};Connection.prototype.disconnReceiver_=function(conn){var _this=this;return function(everConnected){if(conn===_this.conn_){_this.onConnectionLost_(everConnected);}else if(conn===_this.secondaryConn_){_this.log_('Secondary connection lost.');_this.onSecondaryConnectionLost_();}else{_this.log_('closing an old connection');}};};Connection.prototype.connReceiver_=function(conn){var _this=this;return function(message){if(_this.state_!=2/* DISCONNECTED */){if(conn===_this.rx_){_this.onPrimaryMessageReceived_(message);}else if(conn===_this.secondaryConn_){_this.onSecondaryMessageReceived_(message);}else{_this.log_('message on old connection');}}};};/**\r\n     *\r\n     * @param {Object} dataMsg An arbitrary data message to be sent to the server\r\n     */Connection.prototype.sendRequest=function(dataMsg){// wrap in a data message envelope and send it on\nvar msg={t:'d',d:dataMsg};this.sendData_(msg);};Connection.prototype.tryCleanupConnection=function(){if(this.tx_===this.secondaryConn_&&this.rx_===this.secondaryConn_){this.log_('cleaning up and promoting a connection: '+this.secondaryConn_.connId);this.conn_=this.secondaryConn_;this.secondaryConn_=null;// the server will shutdown the old connection\n}};Connection.prototype.onSecondaryControl_=function(controlData){if(MESSAGE_TYPE in controlData){var cmd=controlData[MESSAGE_TYPE];if(cmd===SWITCH_ACK){this.upgradeIfSecondaryHealthy_();}else if(cmd===CONTROL_RESET){// Most likely the session wasn't valid. Abandon the switch attempt\nthis.log_('Got a reset on secondary, closing it');this.secondaryConn_.close();// If we were already using this connection for something, than we need to fully close\nif(this.tx_===this.secondaryConn_||this.rx_===this.secondaryConn_){this.close();}}else if(cmd===CONTROL_PONG){this.log_('got pong on secondary.');this.secondaryResponsesRequired_--;this.upgradeIfSecondaryHealthy_();}}};Connection.prototype.onSecondaryMessageReceived_=function(parsedData){var layer=requireKey('t',parsedData);var data=requireKey('d',parsedData);if(layer=='c'){this.onSecondaryControl_(data);}else if(layer=='d'){// got a data message, but we're still second connection. Need to buffer it up\nthis.pendingDataMessages.push(data);}else{throw new Error('Unknown protocol layer: '+layer);}};Connection.prototype.upgradeIfSecondaryHealthy_=function(){if(this.secondaryResponsesRequired_<=0){this.log_('Secondary connection is healthy.');this.isHealthy_=true;this.secondaryConn_.markConnectionHealthy();this.proceedWithUpgrade_();}else{// Send a ping to make sure the connection is healthy.\nthis.log_('sending ping on secondary.');this.secondaryConn_.send({t:'c',d:{t:PING,d:{}}});}};Connection.prototype.proceedWithUpgrade_=function(){// tell this connection to consider itself open\nthis.secondaryConn_.start();// send ack\nthis.log_('sending client ack on secondary');this.secondaryConn_.send({t:'c',d:{t:SWITCH_ACK,d:{}}});// send end packet on primary transport, switch to sending on this one\n// can receive on this one, buffer responses until end received on primary transport\nthis.log_('Ending transmission on primary');this.conn_.send({t:'c',d:{t:END_TRANSMISSION,d:{}}});this.tx_=this.secondaryConn_;this.tryCleanupConnection();};Connection.prototype.onPrimaryMessageReceived_=function(parsedData){// Must refer to parsedData properties in quotes, so closure doesn't touch them.\nvar layer=requireKey('t',parsedData);var data=requireKey('d',parsedData);if(layer=='c'){this.onControl_(data);}else if(layer=='d'){this.onDataMessage_(data);}};Connection.prototype.onDataMessage_=function(message){this.onPrimaryResponse_();// We don't do anything with data messages, just kick them up a level\nthis.onMessage_(message);};Connection.prototype.onPrimaryResponse_=function(){if(!this.isHealthy_){this.primaryResponsesRequired_--;if(this.primaryResponsesRequired_<=0){this.log_('Primary connection is healthy.');this.isHealthy_=true;this.conn_.markConnectionHealthy();}}};Connection.prototype.onControl_=function(controlData){var cmd=requireKey(MESSAGE_TYPE,controlData);if(MESSAGE_DATA in controlData){var payload=controlData[MESSAGE_DATA];if(cmd===SERVER_HELLO){this.onHandshake_(payload);}else if(cmd===END_TRANSMISSION){this.log_('recvd end transmission on primary');this.rx_=this.secondaryConn_;for(var i=0;i<this.pendingDataMessages.length;++i){this.onDataMessage_(this.pendingDataMessages[i]);}this.pendingDataMessages=[];this.tryCleanupConnection();}else if(cmd===CONTROL_SHUTDOWN){// This was previously the 'onKill' callback passed to the lower-level connection\n// payload in this case is the reason for the shutdown. Generally a human-readable error\nthis.onConnectionShutdown_(payload);}else if(cmd===CONTROL_RESET){// payload in this case is the host we should contact\nthis.onReset_(payload);}else if(cmd===CONTROL_ERROR){error('Server Error: '+payload);}else if(cmd===CONTROL_PONG){this.log_('got pong on primary.');this.onPrimaryResponse_();this.sendPingOnPrimaryIfNecessary_();}else{error('Unknown control packet command: '+cmd);}}};/**\r\n     *\r\n     * @param {Object} handshake The handshake data returned from the server\r\n     * @private\r\n     */Connection.prototype.onHandshake_=function(handshake){var timestamp=handshake.ts;var version=handshake.v;var host=handshake.h;this.sessionId=handshake.s;this.repoInfo_.updateHost(host);// if we've already closed the connection, then don't bother trying to progress further\nif(this.state_==0/* CONNECTING */){this.conn_.start();this.onConnectionEstablished_(this.conn_,timestamp);if(PROTOCOL_VERSION!==version){warn('Protocol version mismatch detected');}// TODO: do we want to upgrade? when? maybe a delay?\nthis.tryStartUpgrade_();}};Connection.prototype.tryStartUpgrade_=function(){var conn=this.transportManager_.upgradeTransport();if(conn){this.startUpgrade_(conn);}};Connection.prototype.startUpgrade_=function(conn){var _this=this;this.secondaryConn_=new conn(this.nextTransportId_(),this.repoInfo_,this.sessionId);// For certain transports (WebSockets), we need to send and receive several messages back and forth before we\n// can consider the transport healthy.\nthis.secondaryResponsesRequired_=conn['responsesRequiredToBeHealthy']||0;var onMessage=this.connReceiver_(this.secondaryConn_);var onDisconnect=this.disconnReceiver_(this.secondaryConn_);this.secondaryConn_.open(onMessage,onDisconnect);// If we haven't successfully upgraded after UPGRADE_TIMEOUT, give up and kill the secondary.\nsetTimeoutNonBlocking(function(){if(_this.secondaryConn_){_this.log_('Timed out trying to upgrade.');_this.secondaryConn_.close();}},Math.floor(UPGRADE_TIMEOUT));};Connection.prototype.onReset_=function(host){this.log_('Reset packet received.  New host: '+host);this.repoInfo_.updateHost(host);// TODO: if we're already \"connected\", we need to trigger a disconnect at the next layer up.\n// We don't currently support resets after the connection has already been established\nif(this.state_===1/* CONNECTED */){this.close();}else{// Close whatever connections we have open and start again.\nthis.closeConnections_();this.start_();}};Connection.prototype.onConnectionEstablished_=function(conn,timestamp){var _this=this;this.log_('Realtime connection established.');this.conn_=conn;this.state_=1/* CONNECTED */;if(this.onReady_){this.onReady_(timestamp,this.sessionId);this.onReady_=null;}// If after 5 seconds we haven't sent enough requests to the server to get the connection healthy,\n// send some pings.\nif(this.primaryResponsesRequired_===0){this.log_('Primary connection is healthy.');this.isHealthy_=true;}else{setTimeoutNonBlocking(function(){_this.sendPingOnPrimaryIfNecessary_();},Math.floor(DELAY_BEFORE_SENDING_EXTRA_REQUESTS));}};Connection.prototype.sendPingOnPrimaryIfNecessary_=function(){// If the connection isn't considered healthy yet, we'll send a noop ping packet request.\nif(!this.isHealthy_&&this.state_===1/* CONNECTED */){this.log_('sending ping on primary.');this.sendData_({t:'c',d:{t:PING,d:{}}});}};Connection.prototype.onSecondaryConnectionLost_=function(){var conn=this.secondaryConn_;this.secondaryConn_=null;if(this.tx_===conn||this.rx_===conn){// we are relying on this connection already in some capacity. Therefore, a failure is real\nthis.close();}};/**\r\n     *\r\n     * @param {boolean} everConnected Whether or not the connection ever reached a server. Used to determine if\r\n     * we should flush the host cache\r\n     * @private\r\n     */Connection.prototype.onConnectionLost_=function(everConnected){this.conn_=null;// NOTE: IF you're seeing a Firefox error for this line, I think it might be because it's getting\n// called on window close and RealtimeState.CONNECTING is no longer defined.  Just a guess.\nif(!everConnected&&this.state_===0/* CONNECTING */){this.log_('Realtime connection failed.');// Since we failed to connect at all, clear any cached entry for this namespace in case the machine went away\nif(this.repoInfo_.isCacheableHost()){PersistentStorage.remove('host:'+this.repoInfo_.host);// reset the internal host to what we would show the user, i.e. <ns>.firebaseio.com\nthis.repoInfo_.internalHost=this.repoInfo_.host;}}else if(this.state_===1/* CONNECTED */){this.log_('Realtime connection lost.');}this.close();};/**\r\n     *\r\n     * @param {string} reason\r\n     * @private\r\n     */Connection.prototype.onConnectionShutdown_=function(reason){this.log_('Connection shutdown command received. Shutting down...');if(this.onKill_){this.onKill_(reason);this.onKill_=null;}// We intentionally don't want to fire onDisconnect (kill is a different case),\n// so clear the callback.\nthis.onDisconnect_=null;this.close();};Connection.prototype.sendData_=function(data){if(this.state_!==1/* CONNECTED */){throw'Connection is not connected';}else{this.tx_.send(data);}};/**\r\n     * Cleans up this connection, calling the appropriate callbacks\r\n     */Connection.prototype.close=function(){if(this.state_!==2/* DISCONNECTED */){this.log_('Closing realtime connection.');this.state_=2/* DISCONNECTED */;this.closeConnections_();if(this.onDisconnect_){this.onDisconnect_();this.onDisconnect_=null;}}};/**\r\n     *\r\n     * @private\r\n     */Connection.prototype.closeConnections_=function(){this.log_('Shutting down all connections');if(this.conn_){this.conn_.close();this.conn_=null;}if(this.secondaryConn_){this.secondaryConn_.close();this.secondaryConn_=null;}if(this.healthyTimeout_){clearTimeout(this.healthyTimeout_);this.healthyTimeout_=null;}};return Connection;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Interface defining the set of actions that can be performed against the Firebase server\r\n * (basically corresponds to our wire protocol).\r\n *\r\n * @interface\r\n */var ServerActions=/** @class */function(){function ServerActions(){}/**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, string)=} onComplete\r\n     * @param {string=} hash\r\n     */ServerActions.prototype.put=function(pathString,data,onComplete,hash){};/**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, ?string)} onComplete\r\n     * @param {string=} hash\r\n     */ServerActions.prototype.merge=function(pathString,data,onComplete,hash){};/**\r\n     * Refreshes the auth token for the current connection.\r\n     * @param {string} token The authentication token\r\n     */ServerActions.prototype.refreshAuthToken=function(token){};/**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, string)=} onComplete\r\n     */ServerActions.prototype.onDisconnectPut=function(pathString,data,onComplete){};/**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, string)=} onComplete\r\n     */ServerActions.prototype.onDisconnectMerge=function(pathString,data,onComplete){};/**\r\n     * @param {string} pathString\r\n     * @param {function(string, string)=} onComplete\r\n     */ServerActions.prototype.onDisconnectCancel=function(pathString,onComplete){};/**\r\n     * @param {Object.<string, *>} stats\r\n     */ServerActions.prototype.reportStats=function(stats){};return ServerActions;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var RECONNECT_MIN_DELAY=1000;var RECONNECT_MAX_DELAY_DEFAULT=60*5*1000;// 5 minutes in milliseconds (Case: 1858)\nvar RECONNECT_MAX_DELAY_FOR_ADMINS=30*1000;// 30 seconds for admin clients (likely to be a backend server)\nvar RECONNECT_DELAY_MULTIPLIER=1.3;var RECONNECT_DELAY_RESET_TIMEOUT=30000;// Reset delay back to MIN_DELAY after being connected for 30sec.\nvar SERVER_KILL_INTERRUPT_REASON='server_kill';// If auth fails repeatedly, we'll assume something is wrong and log a warning / back off.\nvar INVALID_AUTH_TOKEN_THRESHOLD=3;/**\r\n * Firebase connection.  Abstracts wire protocol and handles reconnecting.\r\n *\r\n * NOTE: All JSON objects sent to the realtime connection must have property names enclosed\r\n * in quotes to make sure the closure compiler does not minify them.\r\n */var PersistentConnection=/** @class */function(_super){tslib_1.__extends(PersistentConnection,_super);/**\r\n     * @implements {ServerActions}\r\n     * @param {!RepoInfo} repoInfo_ Data about the namespace we are connecting to\r\n     * @param {function(string, *, boolean, ?number)} onDataUpdate_ A callback for new data from the server\r\n     * @param onConnectStatus_\r\n     * @param onServerInfoUpdate_\r\n     * @param authTokenProvider_\r\n     * @param authOverride_\r\n     */function PersistentConnection(repoInfo_,onDataUpdate_,onConnectStatus_,onServerInfoUpdate_,authTokenProvider_,authOverride_){var _this=_super.call(this)||this;_this.repoInfo_=repoInfo_;_this.onDataUpdate_=onDataUpdate_;_this.onConnectStatus_=onConnectStatus_;_this.onServerInfoUpdate_=onServerInfoUpdate_;_this.authTokenProvider_=authTokenProvider_;_this.authOverride_=authOverride_;// Used for diagnostic logging.\n_this.id=PersistentConnection.nextPersistentConnectionId_++;_this.log_=logWrapper('p:'+_this.id+':');/** @private {Object} */_this.interruptReasons_={};_this.listens_={};_this.outstandingPuts_=[];_this.outstandingPutCount_=0;_this.onDisconnectRequestQueue_=[];_this.connected_=false;_this.reconnectDelay_=RECONNECT_MIN_DELAY;_this.maxReconnectDelay_=RECONNECT_MAX_DELAY_DEFAULT;_this.securityDebugCallback_=null;_this.lastSessionId=null;/** @private {number|null} */_this.establishConnectionTimer_=null;/** @private {boolean} */_this.visible_=false;// Before we get connected, we keep a queue of pending messages to send.\n_this.requestCBHash_={};_this.requestNumber_=0;/** @private {?{\r\n         *   sendRequest(Object),\r\n         *   close()\r\n         * }} */_this.realtime_=null;/** @private {string|null} */_this.authToken_=null;_this.forceTokenRefresh_=false;_this.invalidAuthTokenCount_=0;_this.firstConnection_=true;_this.lastConnectionAttemptTime_=null;_this.lastConnectionEstablishedTime_=null;if(authOverride_&&!util.isNodeSdk()){throw new Error('Auth override specified in options, but not supported on non Node.js platforms');}_this.scheduleConnect_(0);VisibilityMonitor.getInstance().on('visible',_this.onVisible_,_this);if(repoInfo_.host.indexOf('fblocal')===-1){OnlineMonitor.getInstance().on('online',_this.onOnline_,_this);}return _this;}/**\r\n     * @param {!string} action\r\n     * @param {*} body\r\n     * @param {function(*)=} onResponse\r\n     * @protected\r\n     */PersistentConnection.prototype.sendRequest=function(action,body,onResponse){var curReqNum=++this.requestNumber_;var msg={r:curReqNum,a:action,b:body};this.log_(util.stringify(msg));util.assert(this.connected_,\"sendRequest call when we're not connected not allowed.\");this.realtime_.sendRequest(msg);if(onResponse){this.requestCBHash_[curReqNum]=onResponse;}};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.listen=function(query,currentHashFn,tag,onComplete){var queryId=query.queryIdentifier();var pathString=query.path.toString();this.log_('Listen called for '+pathString+' '+queryId);this.listens_[pathString]=this.listens_[pathString]||{};util.assert(query.getQueryParams().isDefault()||!query.getQueryParams().loadsAllData(),'listen() called for non-default but complete query');util.assert(!this.listens_[pathString][queryId],'listen() called twice for same path/queryId.');var listenSpec={onComplete:onComplete,hashFn:currentHashFn,query:query,tag:tag};this.listens_[pathString][queryId]=listenSpec;if(this.connected_){this.sendListen_(listenSpec);}};/**\r\n     * @param {!{onComplete(),\r\n     *           hashFn():!string,\r\n     *           query: !Query,\r\n     *           tag: ?number}} listenSpec\r\n     * @private\r\n     */PersistentConnection.prototype.sendListen_=function(listenSpec){var _this=this;var query=listenSpec.query;var pathString=query.path.toString();var queryId=query.queryIdentifier();this.log_('Listen on '+pathString+' for '+queryId);var req={/*path*/p:pathString};var action='q';// Only bother to send query if it's non-default.\nif(listenSpec.tag){req['q']=query.queryObject();req['t']=listenSpec.tag;}req[/*hash*/'h']=listenSpec.hashFn();this.sendRequest(action,req,function(message){var payload=message[/*data*/'d'];var status=message[/*status*/'s'];// print warnings in any case...\nPersistentConnection.warnOnListenWarnings_(payload,query);var currentListenSpec=_this.listens_[pathString]&&_this.listens_[pathString][queryId];// only trigger actions if the listen hasn't been removed and readded\nif(currentListenSpec===listenSpec){_this.log_('listen response',message);if(status!=='ok'){_this.removeListen_(pathString,queryId);}if(listenSpec.onComplete){listenSpec.onComplete(status,payload);}}});};/**\r\n     * @param {*} payload\r\n     * @param {!Query} query\r\n     * @private\r\n     */PersistentConnection.warnOnListenWarnings_=function(payload,query){if(payload&&typeof payload==='object'&&util.contains(payload,'w')){var warnings=util.safeGet(payload,'w');if(Array.isArray(warnings)&&~warnings.indexOf('no_index')){var indexSpec='\".indexOn\": \"'+query.getQueryParams().getIndex().toString()+'\"';var indexPath=query.path.toString();warn(\"Using an unspecified index. Your data will be downloaded and \"+(\"filtered on the client. Consider adding \"+indexSpec+\" at \")+(indexPath+\" to your security rules for better performance.\"));}}};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.refreshAuthToken=function(token){this.authToken_=token;this.log_('Auth token refreshed');if(this.authToken_){this.tryAuth();}else{//If we're connected we want to let the server know to unauthenticate us. If we're not connected, simply delete\n//the credential so we dont become authenticated next time we connect.\nif(this.connected_){this.sendRequest('unauth',{},function(){});}}this.reduceReconnectDelayIfAdminCredential_(token);};/**\r\n     * @param {!string} credential\r\n     * @private\r\n     */PersistentConnection.prototype.reduceReconnectDelayIfAdminCredential_=function(credential){// NOTE: This isn't intended to be bulletproof (a malicious developer can always just modify the client).\n// Additionally, we don't bother resetting the max delay back to the default if auth fails / expires.\nvar isFirebaseSecret=credential&&credential.length===40;if(isFirebaseSecret||util.isAdmin(credential)){this.log_('Admin auth credential detected.  Reducing max reconnect time.');this.maxReconnectDelay_=RECONNECT_MAX_DELAY_FOR_ADMINS;}};/**\r\n     * Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like\r\n     * a auth revoked (the connection is closed).\r\n     */PersistentConnection.prototype.tryAuth=function(){var _this=this;if(this.connected_&&this.authToken_){var token_1=this.authToken_;var authMethod=util.isValidFormat(token_1)?'auth':'gauth';var requestData={cred:token_1};if(this.authOverride_===null){requestData['noauth']=true;}else if(typeof this.authOverride_==='object'){requestData['authvar']=this.authOverride_;}this.sendRequest(authMethod,requestData,function(res){var status=res[/*status*/'s'];var data=res[/*data*/'d']||'error';if(_this.authToken_===token_1){if(status==='ok'){_this.invalidAuthTokenCount_=0;}else{// Triggers reconnect and force refresh for auth token\n_this.onAuthRevoked_(status,data);}}});}};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.unlisten=function(query,tag){var pathString=query.path.toString();var queryId=query.queryIdentifier();this.log_('Unlisten called for '+pathString+' '+queryId);util.assert(query.getQueryParams().isDefault()||!query.getQueryParams().loadsAllData(),'unlisten() called for non-default but complete query');var listen=this.removeListen_(pathString,queryId);if(listen&&this.connected_){this.sendUnlisten_(pathString,queryId,query.queryObject(),tag);}};PersistentConnection.prototype.sendUnlisten_=function(pathString,queryId,queryObj,tag){this.log_('Unlisten on '+pathString+' for '+queryId);var req={/*path*/p:pathString};var action='n';// Only bother sending queryId if it's non-default.\nif(tag){req['q']=queryObj;req['t']=tag;}this.sendRequest(action,req);};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.onDisconnectPut=function(pathString,data,onComplete){if(this.connected_){this.sendOnDisconnect_('o',pathString,data,onComplete);}else{this.onDisconnectRequestQueue_.push({pathString:pathString,action:'o',data:data,onComplete:onComplete});}};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.onDisconnectMerge=function(pathString,data,onComplete){if(this.connected_){this.sendOnDisconnect_('om',pathString,data,onComplete);}else{this.onDisconnectRequestQueue_.push({pathString:pathString,action:'om',data:data,onComplete:onComplete});}};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.onDisconnectCancel=function(pathString,onComplete){if(this.connected_){this.sendOnDisconnect_('oc',pathString,null,onComplete);}else{this.onDisconnectRequestQueue_.push({pathString:pathString,action:'oc',data:null,onComplete:onComplete});}};PersistentConnection.prototype.sendOnDisconnect_=function(action,pathString,data,onComplete){var request={/*path*/p:pathString,/*data*/d:data};this.log_('onDisconnect '+action,request);this.sendRequest(action,request,function(response){if(onComplete){setTimeout(function(){onComplete(response[/*status*/'s'],response[/* data */'d']);},Math.floor(0));}});};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.put=function(pathString,data,onComplete,hash){this.putInternal('p',pathString,data,onComplete,hash);};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.merge=function(pathString,data,onComplete,hash){this.putInternal('m',pathString,data,onComplete,hash);};PersistentConnection.prototype.putInternal=function(action,pathString,data,onComplete,hash){var request={/*path*/p:pathString,/*data*/d:data};if(hash!==undefined)request[/*hash*/'h']=hash;// TODO: Only keep track of the most recent put for a given path?\nthis.outstandingPuts_.push({action:action,request:request,onComplete:onComplete});this.outstandingPutCount_++;var index=this.outstandingPuts_.length-1;if(this.connected_){this.sendPut_(index);}else{this.log_('Buffering put: '+pathString);}};PersistentConnection.prototype.sendPut_=function(index){var _this=this;var action=this.outstandingPuts_[index].action;var request=this.outstandingPuts_[index].request;var onComplete=this.outstandingPuts_[index].onComplete;this.outstandingPuts_[index].queued=this.connected_;this.sendRequest(action,request,function(message){_this.log_(action+' response',message);delete _this.outstandingPuts_[index];_this.outstandingPutCount_--;// Clean up array occasionally.\nif(_this.outstandingPutCount_===0){_this.outstandingPuts_=[];}if(onComplete)onComplete(message[/*status*/'s'],message[/* data */'d']);});};/**\r\n     * @inheritDoc\r\n     */PersistentConnection.prototype.reportStats=function(stats){var _this=this;// If we're not connected, we just drop the stats.\nif(this.connected_){var request={/*counters*/c:stats};this.log_('reportStats',request);this.sendRequest(/*stats*/'s',request,function(result){var status=result[/*status*/'s'];if(status!=='ok'){var errorReason=result[/* data */'d'];_this.log_('reportStats','Error sending stats: '+errorReason);}});}};/**\r\n     * @param {*} message\r\n     * @private\r\n     */PersistentConnection.prototype.onDataMessage_=function(message){if('r'in message){// this is a response\nthis.log_('from server: '+util.stringify(message));var reqNum=message['r'];var onResponse=this.requestCBHash_[reqNum];if(onResponse){delete this.requestCBHash_[reqNum];onResponse(message[/*body*/'b']);}}else if('error'in message){throw'A server-side error has occurred: '+message['error'];}else if('a'in message){// a and b are action and body, respectively\nthis.onDataPush_(message['a'],message['b']);}};PersistentConnection.prototype.onDataPush_=function(action,body){this.log_('handleServerMessage',action,body);if(action==='d')this.onDataUpdate_(body[/*path*/'p'],body[/*data*/'d'],/*isMerge*/false,body['t']);else if(action==='m')this.onDataUpdate_(body[/*path*/'p'],body[/*data*/'d'],/*isMerge=*/true,body['t']);else if(action==='c')this.onListenRevoked_(body[/*path*/'p'],body[/*query*/'q']);else if(action==='ac')this.onAuthRevoked_(body[/*status code*/'s'],body[/* explanation */'d']);else if(action==='sd')this.onSecurityDebugPacket_(body);else error('Unrecognized action received from server: '+util.stringify(action)+'\\nAre you using the latest client?');};PersistentConnection.prototype.onReady_=function(timestamp,sessionId){this.log_('connection ready');this.connected_=true;this.lastConnectionEstablishedTime_=new Date().getTime();this.handleTimestamp_(timestamp);this.lastSessionId=sessionId;if(this.firstConnection_){this.sendConnectStats_();}this.restoreState_();this.firstConnection_=false;this.onConnectStatus_(true);};PersistentConnection.prototype.scheduleConnect_=function(timeout){var _this=this;util.assert(!this.realtime_,\"Scheduling a connect when we're already connected/ing?\");if(this.establishConnectionTimer_){clearTimeout(this.establishConnectionTimer_);}// NOTE: Even when timeout is 0, it's important to do a setTimeout to work around an infuriating \"Security Error\" in\n// Firefox when trying to write to our long-polling iframe in some scenarios (e.g. Forge or our unit tests).\nthis.establishConnectionTimer_=setTimeout(function(){_this.establishConnectionTimer_=null;_this.establishConnection_();},Math.floor(timeout));};/**\r\n     * @param {boolean} visible\r\n     * @private\r\n     */PersistentConnection.prototype.onVisible_=function(visible){// NOTE: Tabbing away and back to a window will defeat our reconnect backoff, but I think that's fine.\nif(visible&&!this.visible_&&this.reconnectDelay_===this.maxReconnectDelay_){this.log_('Window became visible.  Reducing delay.');this.reconnectDelay_=RECONNECT_MIN_DELAY;if(!this.realtime_){this.scheduleConnect_(0);}}this.visible_=visible;};PersistentConnection.prototype.onOnline_=function(online){if(online){this.log_('Browser went online.');this.reconnectDelay_=RECONNECT_MIN_DELAY;if(!this.realtime_){this.scheduleConnect_(0);}}else{this.log_('Browser went offline.  Killing connection.');if(this.realtime_){this.realtime_.close();}}};PersistentConnection.prototype.onRealtimeDisconnect_=function(){this.log_('data client disconnected');this.connected_=false;this.realtime_=null;// Since we don't know if our sent transactions succeeded or not, we need to cancel them.\nthis.cancelSentTransactions_();// Clear out the pending requests.\nthis.requestCBHash_={};if(this.shouldReconnect_()){if(!this.visible_){this.log_(\"Window isn't visible.  Delaying reconnect.\");this.reconnectDelay_=this.maxReconnectDelay_;this.lastConnectionAttemptTime_=new Date().getTime();}else if(this.lastConnectionEstablishedTime_){// If we've been connected long enough, reset reconnect delay to minimum.\nvar timeSinceLastConnectSucceeded=new Date().getTime()-this.lastConnectionEstablishedTime_;if(timeSinceLastConnectSucceeded>RECONNECT_DELAY_RESET_TIMEOUT)this.reconnectDelay_=RECONNECT_MIN_DELAY;this.lastConnectionEstablishedTime_=null;}var timeSinceLastConnectAttempt=new Date().getTime()-this.lastConnectionAttemptTime_;var reconnectDelay=Math.max(0,this.reconnectDelay_-timeSinceLastConnectAttempt);reconnectDelay=Math.random()*reconnectDelay;this.log_('Trying to reconnect in '+reconnectDelay+'ms');this.scheduleConnect_(reconnectDelay);// Adjust reconnect delay for next time.\nthis.reconnectDelay_=Math.min(this.maxReconnectDelay_,this.reconnectDelay_*RECONNECT_DELAY_MULTIPLIER);}this.onConnectStatus_(false);};PersistentConnection.prototype.establishConnection_=function(){if(this.shouldReconnect_()){this.log_('Making a connection attempt');this.lastConnectionAttemptTime_=new Date().getTime();this.lastConnectionEstablishedTime_=null;var onDataMessage_1=this.onDataMessage_.bind(this);var onReady_1=this.onReady_.bind(this);var onDisconnect_1=this.onRealtimeDisconnect_.bind(this);var connId_1=this.id+':'+PersistentConnection.nextConnectionId_++;var self_1=this;var lastSessionId_1=this.lastSessionId;var canceled_1=false;var connection_1=null;var closeFn_1=function closeFn_1(){if(connection_1){connection_1.close();}else{canceled_1=true;onDisconnect_1();}};var sendRequestFn=function sendRequestFn(msg){util.assert(connection_1,\"sendRequest call when we're not connected not allowed.\");connection_1.sendRequest(msg);};this.realtime_={close:closeFn_1,sendRequest:sendRequestFn};var forceRefresh=this.forceTokenRefresh_;this.forceTokenRefresh_=false;// First fetch auth token, and establish connection after fetching the token was successful\nthis.authTokenProvider_.getToken(forceRefresh).then(function(result){if(!canceled_1){log('getToken() completed. Creating connection.');self_1.authToken_=result&&result.accessToken;connection_1=new Connection(connId_1,self_1.repoInfo_,onDataMessage_1,onReady_1,onDisconnect_1,/* onKill= */function(reason){warn(reason+' ('+self_1.repoInfo_.toString()+')');self_1.interrupt(SERVER_KILL_INTERRUPT_REASON);},lastSessionId_1);}else{log('getToken() completed but was canceled');}}).then(null,function(error){self_1.log_('Failed to get token: '+error);if(!canceled_1){if(util.CONSTANTS.NODE_ADMIN){// This may be a critical error for the Admin Node.js SDK, so log a warning.\n// But getToken() may also just have temporarily failed, so we still want to\n// continue retrying.\nwarn(error);}closeFn_1();}});}};/**\r\n     * @param {string} reason\r\n     */PersistentConnection.prototype.interrupt=function(reason){log('Interrupting connection for reason: '+reason);this.interruptReasons_[reason]=true;if(this.realtime_){this.realtime_.close();}else{if(this.establishConnectionTimer_){clearTimeout(this.establishConnectionTimer_);this.establishConnectionTimer_=null;}if(this.connected_){this.onRealtimeDisconnect_();}}};/**\r\n     * @param {string} reason\r\n     */PersistentConnection.prototype.resume=function(reason){log('Resuming connection for reason: '+reason);delete this.interruptReasons_[reason];if(util.isEmpty(this.interruptReasons_)){this.reconnectDelay_=RECONNECT_MIN_DELAY;if(!this.realtime_){this.scheduleConnect_(0);}}};PersistentConnection.prototype.handleTimestamp_=function(timestamp){var delta=timestamp-new Date().getTime();this.onServerInfoUpdate_({serverTimeOffset:delta});};PersistentConnection.prototype.cancelSentTransactions_=function(){for(var i=0;i<this.outstandingPuts_.length;i++){var put=this.outstandingPuts_[i];if(put&&/*hash*/'h'in put.request&&put.queued){if(put.onComplete)put.onComplete('disconnect');delete this.outstandingPuts_[i];this.outstandingPutCount_--;}}// Clean up array occasionally.\nif(this.outstandingPutCount_===0)this.outstandingPuts_=[];};/**\r\n     * @param {!string} pathString\r\n     * @param {Array.<*>=} query\r\n     * @private\r\n     */PersistentConnection.prototype.onListenRevoked_=function(pathString,query){// Remove the listen and manufacture a \"permission_denied\" error for the failed listen.\nvar queryId;if(!query){queryId='default';}else{queryId=query.map(function(q){return ObjectToUniqueKey(q);}).join('$');}var listen=this.removeListen_(pathString,queryId);if(listen&&listen.onComplete)listen.onComplete('permission_denied');};/**\r\n     * @param {!string} pathString\r\n     * @param {!string} queryId\r\n     * @return {{queries:Array.<Query>, onComplete:function(string)}}\r\n     * @private\r\n     */PersistentConnection.prototype.removeListen_=function(pathString,queryId){var normalizedPathString=new Path(pathString).toString();// normalize path.\nvar listen;if(this.listens_[normalizedPathString]!==undefined){listen=this.listens_[normalizedPathString][queryId];delete this.listens_[normalizedPathString][queryId];if(util.getCount(this.listens_[normalizedPathString])===0){delete this.listens_[normalizedPathString];}}else{// all listens for this path has already been removed\nlisten=undefined;}return listen;};PersistentConnection.prototype.onAuthRevoked_=function(statusCode,explanation){log('Auth token revoked: '+statusCode+'/'+explanation);this.authToken_=null;this.forceTokenRefresh_=true;this.realtime_.close();if(statusCode==='invalid_token'||statusCode==='permission_denied'){// We'll wait a couple times before logging the warning / increasing the\n// retry period since oauth tokens will report as \"invalid\" if they're\n// just expired. Plus there may be transient issues that resolve themselves.\nthis.invalidAuthTokenCount_++;if(this.invalidAuthTokenCount_>=INVALID_AUTH_TOKEN_THRESHOLD){// Set a long reconnect delay because recovery is unlikely\nthis.reconnectDelay_=RECONNECT_MAX_DELAY_FOR_ADMINS;// Notify the auth token provider that the token is invalid, which will log\n// a warning\nthis.authTokenProvider_.notifyForInvalidToken();}}};PersistentConnection.prototype.onSecurityDebugPacket_=function(body){if(this.securityDebugCallback_){this.securityDebugCallback_(body);}else{if('msg'in body){console.log('FIREBASE: '+body['msg'].replace('\\n','\\nFIREBASE: '));}}};PersistentConnection.prototype.restoreState_=function(){var _this=this;//Re-authenticate ourselves if we have a credential stored.\nthis.tryAuth();// Puts depend on having received the corresponding data update from the server before they complete, so we must\n// make sure to send listens before puts.\nutil.forEach(this.listens_,function(pathString,queries){util.forEach(queries,function(key,listenSpec){_this.sendListen_(listenSpec);});});for(var i=0;i<this.outstandingPuts_.length;i++){if(this.outstandingPuts_[i])this.sendPut_(i);}while(this.onDisconnectRequestQueue_.length){var request=this.onDisconnectRequestQueue_.shift();this.sendOnDisconnect_(request.action,request.pathString,request.data,request.onComplete);}};/**\r\n     * Sends client stats for first connection\r\n     * @private\r\n     */PersistentConnection.prototype.sendConnectStats_=function(){var stats={};var clientName='js';if(util.CONSTANTS.NODE_ADMIN){clientName='admin_node';}else if(util.CONSTANTS.NODE_CLIENT){clientName='node';}stats['sdk.'+clientName+'.'+firebase.SDK_VERSION.replace(/\\./g,'-')]=1;if(util.isMobileCordova()){stats['framework.cordova']=1;}else if(util.isReactNative()){stats['framework.reactnative']=1;}this.reportStats(stats);};/**\r\n     * @return {boolean}\r\n     * @private\r\n     */PersistentConnection.prototype.shouldReconnect_=function(){var online=OnlineMonitor.getInstance().currentlyOnline();return util.isEmpty(this.interruptReasons_)&&online;};/**\r\n     * @private\r\n     */PersistentConnection.nextPersistentConnectionId_=0;/**\r\n     * Counter for number of connections created. Mainly used for tagging in the logs\r\n     * @type {number}\r\n     * @private\r\n     */PersistentConnection.nextConnectionId_=0;return PersistentConnection;}(ServerActions);/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * An implementation of ServerActions that communicates with the server via REST requests.\r\n * This is mostly useful for compatibility with crawlers, where we don't want to spin up a full\r\n * persistent connection (using WebSockets or long-polling)\r\n */var ReadonlyRestClient=/** @class */function(_super){tslib_1.__extends(ReadonlyRestClient,_super);/**\r\n     * @param {!RepoInfo} repoInfo_ Data about the namespace we are connecting to\r\n     * @param {function(string, *, boolean, ?number)} onDataUpdate_ A callback for new data from the server\r\n     * @param {AuthTokenProvider} authTokenProvider_\r\n     * @implements {ServerActions}\r\n     */function ReadonlyRestClient(repoInfo_,onDataUpdate_,authTokenProvider_){var _this=_super.call(this)||this;_this.repoInfo_=repoInfo_;_this.onDataUpdate_=onDataUpdate_;_this.authTokenProvider_=authTokenProvider_;/** @private {function(...[*])} */_this.log_=logWrapper('p:rest:');/**\r\n         * We don't actually need to track listens, except to prevent us calling an onComplete for a listen\r\n         * that's been removed. :-/\r\n         *\r\n         * @private {!Object.<string, !Object>}\r\n         */_this.listens_={};return _this;}ReadonlyRestClient.prototype.reportStats=function(stats){throw new Error('Method not implemented.');};/**\r\n     * @param {!Query} query\r\n     * @param {?number=} tag\r\n     * @return {string}\r\n     * @private\r\n     */ReadonlyRestClient.getListenId_=function(query,tag){if(tag!==undefined){return'tag$'+tag;}else{util.assert(query.getQueryParams().isDefault(),\"should have a tag if it's not a default query.\");return query.path.toString();}};/** @inheritDoc */ReadonlyRestClient.prototype.listen=function(query,currentHashFn,tag,onComplete){var _this=this;var pathString=query.path.toString();this.log_('Listen called for '+pathString+' '+query.queryIdentifier());// Mark this listener so we can tell if it's removed.\nvar listenId=ReadonlyRestClient.getListenId_(query,tag);var thisListen={};this.listens_[listenId]=thisListen;var queryStringParameters=query.getQueryParams().toRestQueryStringParameters();this.restRequest_(pathString+'.json',queryStringParameters,function(error,result){var data=result;if(error===404){data=null;error=null;}if(error===null){_this.onDataUpdate_(pathString,data,/*isMerge=*/false,tag);}if(util.safeGet(_this.listens_,listenId)===thisListen){var status_1;if(!error){status_1='ok';}else if(error==401){status_1='permission_denied';}else{status_1='rest_error:'+error;}onComplete(status_1,null);}});};/** @inheritDoc */ReadonlyRestClient.prototype.unlisten=function(query,tag){var listenId=ReadonlyRestClient.getListenId_(query,tag);delete this.listens_[listenId];};/** @inheritDoc */ReadonlyRestClient.prototype.refreshAuthToken=function(token){// no-op since we just always call getToken.\n};/**\r\n     * Performs a REST request to the given path, with the provided query string parameters,\r\n     * and any auth credentials we have.\r\n     *\r\n     * @param {!string} pathString\r\n     * @param {!Object.<string, *>} queryStringParameters\r\n     * @param {?function(?number, *=)} callback\r\n     * @private\r\n     */ReadonlyRestClient.prototype.restRequest_=function(pathString,queryStringParameters,callback){var _this=this;if(queryStringParameters===void 0){queryStringParameters={};}queryStringParameters['format']='export';this.authTokenProvider_.getToken(/*forceRefresh=*/false).then(function(authTokenData){var authToken=authTokenData&&authTokenData.accessToken;if(authToken){queryStringParameters['auth']=authToken;}var url=(_this.repoInfo_.secure?'https://':'http://')+_this.repoInfo_.host+pathString+'?'+'ns='+_this.repoInfo_.namespace+util.querystring(queryStringParameters);_this.log_('Sending REST request for '+url);var xhr=new XMLHttpRequest();xhr.onreadystatechange=function(){if(callback&&xhr.readyState===4){_this.log_('REST Response for '+url+' received. status:',xhr.status,'response:',xhr.responseText);var res=null;if(xhr.status>=200&&xhr.status<300){try{res=util.jsonEval(xhr.responseText);}catch(e){warn('Failed to parse JSON response for '+url+': '+xhr.responseText);}callback(null,res);}else{// 401 and 404 are expected.\nif(xhr.status!==401&&xhr.status!==404){warn('Got unsuccessful REST response for '+url+' Status: '+xhr.status);}callback(xhr.status);}callback=null;}};xhr.open('GET',url,/*asynchronous=*/true);xhr.send();});};return ReadonlyRestClient;}(ServerActions);/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var INTERRUPT_REASON='repo_interrupt';/**\r\n * A connection to a single data repository.\r\n */var Repo=/** @class */function(){/**\r\n     * @param {!RepoInfo} repoInfo_\r\n     * @param {boolean} forceRestClient\r\n     * @param {!FirebaseApp} app\r\n     */function Repo(repoInfo_,forceRestClient,app){var _this=this;this.repoInfo_=repoInfo_;this.app=app;this.dataUpdateCount=0;this.statsListener_=null;this.eventQueue_=new EventQueue();this.nextWriteId_=1;this.interceptServerDataCallback_=null;// A list of data pieces and paths to be set when this client disconnects.\nthis.onDisconnect_=new SparseSnapshotTree();/**\r\n         * TODO: This should be @private but it's used by test_access.js and internal.js\r\n         * @type {?PersistentConnection}\r\n         */this.persistentConnection_=null;/** @type {!AuthTokenProvider} */var authTokenProvider=new AuthTokenProvider(app);this.stats_=StatsManager.getCollection(repoInfo_);if(forceRestClient||beingCrawled()){this.server_=new ReadonlyRestClient(this.repoInfo_,this.onDataUpdate_.bind(this),authTokenProvider);// Minor hack: Fire onConnect immediately, since there's no actual connection.\nsetTimeout(this.onConnectStatus_.bind(this,true),0);}else{var authOverride=app.options['databaseAuthVariableOverride'];// Validate authOverride\nif(typeof authOverride!=='undefined'&&authOverride!==null){if(typeof authOverride!=='object'){throw new Error('Only objects are supported for option databaseAuthVariableOverride');}try{util.stringify(authOverride);}catch(e){throw new Error('Invalid authOverride provided: '+e);}}this.persistentConnection_=new PersistentConnection(this.repoInfo_,this.onDataUpdate_.bind(this),this.onConnectStatus_.bind(this),this.onServerInfoUpdate_.bind(this),authTokenProvider,authOverride);this.server_=this.persistentConnection_;}authTokenProvider.addTokenChangeListener(function(token){_this.server_.refreshAuthToken(token);});// In the case of multiple Repos for the same repoInfo (i.e. there are multiple Firebase.Contexts being used),\n// we only want to create one StatsReporter.  As such, we'll report stats over the first Repo created.\nthis.statsReporter_=StatsManager.getOrCreateReporter(repoInfo_,function(){return new StatsReporter(_this.stats_,_this.server_);});this.transactions_init_();// Used for .info.\nthis.infoData_=new SnapshotHolder();this.infoSyncTree_=new SyncTree({startListening:function startListening(query,tag,currentHashFn,onComplete){var infoEvents=[];var node=_this.infoData_.getNode(query.path);// This is possibly a hack, but we have different semantics for .info endpoints. We don't raise null events\n// on initial data...\nif(!node.isEmpty()){infoEvents=_this.infoSyncTree_.applyServerOverwrite(query.path,node);setTimeout(function(){onComplete('ok');},0);}return infoEvents;},stopListening:function stopListening(){}});this.updateInfo_('connected',false);this.serverSyncTree_=new SyncTree({startListening:function startListening(query,tag,currentHashFn,onComplete){_this.server_.listen(query,currentHashFn,tag,function(status,data){var events=onComplete(status,data);_this.eventQueue_.raiseEventsForChangedPath(query.path,events);});// No synchronous events for network-backed sync trees\nreturn[];},stopListening:function stopListening(query,tag){_this.server_.unlisten(query,tag);}});}/**\r\n     * @return {string}  The URL corresponding to the root of this Firebase.\r\n     */Repo.prototype.toString=function(){return(this.repoInfo_.secure?'https://':'http://')+this.repoInfo_.host;};/**\r\n     * @return {!string} The namespace represented by the repo.\r\n     */Repo.prototype.name=function(){return this.repoInfo_.namespace;};/**\r\n     * @return {!number} The time in milliseconds, taking the server offset into account if we have one.\r\n     */Repo.prototype.serverTime=function(){var offsetNode=this.infoData_.getNode(new Path('.info/serverTimeOffset'));var offset=offsetNode.val()||0;return new Date().getTime()+offset;};/**\r\n     * Generate ServerValues using some variables from the repo object.\r\n     * @return {!Object}\r\n     */Repo.prototype.generateServerValues=function(){return generateWithValues({timestamp:this.serverTime()});};/**\r\n     * Called by realtime when we get new messages from the server.\r\n     *\r\n     * @private\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {boolean} isMerge\r\n     * @param {?number} tag\r\n     */Repo.prototype.onDataUpdate_=function(pathString,data,isMerge,tag){// For testing.\nthis.dataUpdateCount++;var path=new Path(pathString);data=this.interceptServerDataCallback_?this.interceptServerDataCallback_(pathString,data):data;var events=[];if(tag){if(isMerge){var taggedChildren=util.map(data,function(raw){return nodeFromJSON$1(raw);});events=this.serverSyncTree_.applyTaggedQueryMerge(path,taggedChildren,tag);}else{var taggedSnap=nodeFromJSON$1(data);events=this.serverSyncTree_.applyTaggedQueryOverwrite(path,taggedSnap,tag);}}else if(isMerge){var changedChildren=util.map(data,function(raw){return nodeFromJSON$1(raw);});events=this.serverSyncTree_.applyServerMerge(path,changedChildren);}else{var snap=nodeFromJSON$1(data);events=this.serverSyncTree_.applyServerOverwrite(path,snap);}var affectedPath=path;if(events.length>0){// Since we have a listener outstanding for each transaction, receiving any events\n// is a proxy for some change having occurred.\naffectedPath=this.rerunTransactions_(path);}this.eventQueue_.raiseEventsForChangedPath(affectedPath,events);};/**\r\n     * TODO: This should be @private but it's used by test_access.js and internal.js\r\n     * @param {?function(!string, *):*} callback\r\n     * @private\r\n     */Repo.prototype.interceptServerData_=function(callback){this.interceptServerDataCallback_=callback;};/**\r\n     * @param {!boolean} connectStatus\r\n     * @private\r\n     */Repo.prototype.onConnectStatus_=function(connectStatus){this.updateInfo_('connected',connectStatus);if(connectStatus===false){this.runOnDisconnectEvents_();}};/**\r\n     * @param {!Object} updates\r\n     * @private\r\n     */Repo.prototype.onServerInfoUpdate_=function(updates){var _this=this;each(updates,function(value,key){_this.updateInfo_(key,value);});};/**\r\n     *\r\n     * @param {!string} pathString\r\n     * @param {*} value\r\n     * @private\r\n     */Repo.prototype.updateInfo_=function(pathString,value){var path=new Path('/.info/'+pathString);var newNode=nodeFromJSON$1(value);this.infoData_.updateSnapshot(path,newNode);var events=this.infoSyncTree_.applyServerOverwrite(path,newNode);this.eventQueue_.raiseEventsForChangedPath(path,events);};/**\r\n     * @return {!number}\r\n     * @private\r\n     */Repo.prototype.getNextWriteId_=function(){return this.nextWriteId_++;};/**\r\n     * @param {!Path} path\r\n     * @param {*} newVal\r\n     * @param {number|string|null} newPriority\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */Repo.prototype.setWithPriority=function(path,newVal,newPriority,onComplete){var _this=this;this.log_('set',{path:path.toString(),value:newVal,priority:newPriority});// TODO: Optimize this behavior to either (a) store flag to skip resolving where possible and / or\n// (b) store unresolved paths on JSON parse\nvar serverValues=this.generateServerValues();var newNodeUnresolved=nodeFromJSON$1(newVal,newPriority);var newNode=resolveDeferredValueSnapshot(newNodeUnresolved,serverValues);var writeId=this.getNextWriteId_();var events=this.serverSyncTree_.applyUserOverwrite(path,newNode,writeId,true);this.eventQueue_.queueEvents(events);this.server_.put(path.toString(),newNodeUnresolved.val(/*export=*/true),function(status,errorReason){var success=status==='ok';if(!success){warn('set at '+path+' failed: '+status);}var clearEvents=_this.serverSyncTree_.ackUserWrite(writeId,!success);_this.eventQueue_.raiseEventsForChangedPath(path,clearEvents);_this.callOnCompleteCallback(onComplete,status,errorReason);});var affectedPath=this.abortTransactions_(path);this.rerunTransactions_(affectedPath);// We queued the events above, so just flush the queue here\nthis.eventQueue_.raiseEventsForChangedPath(affectedPath,[]);};/**\r\n     * @param {!Path} path\r\n     * @param {!Object} childrenToMerge\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */Repo.prototype.update=function(path,childrenToMerge,onComplete){var _this=this;this.log_('update',{path:path.toString(),value:childrenToMerge});// Start with our existing data and merge each child into it.\nvar empty=true;var serverValues=this.generateServerValues();var changedChildren={};util.forEach(childrenToMerge,function(changedKey,changedValue){empty=false;var newNodeUnresolved=nodeFromJSON$1(changedValue);changedChildren[changedKey]=resolveDeferredValueSnapshot(newNodeUnresolved,serverValues);});if(!empty){var writeId_1=this.getNextWriteId_();var events=this.serverSyncTree_.applyUserMerge(path,changedChildren,writeId_1);this.eventQueue_.queueEvents(events);this.server_.merge(path.toString(),childrenToMerge,function(status,errorReason){var success=status==='ok';if(!success){warn('update at '+path+' failed: '+status);}var clearEvents=_this.serverSyncTree_.ackUserWrite(writeId_1,!success);var affectedPath=clearEvents.length>0?_this.rerunTransactions_(path):path;_this.eventQueue_.raiseEventsForChangedPath(affectedPath,clearEvents);_this.callOnCompleteCallback(onComplete,status,errorReason);});util.forEach(childrenToMerge,function(changedPath){var affectedPath=_this.abortTransactions_(path.child(changedPath));_this.rerunTransactions_(affectedPath);});// We queued the events above, so just flush the queue here\nthis.eventQueue_.raiseEventsForChangedPath(path,[]);}else{log(\"update() called with empty data.  Don't do anything.\");this.callOnCompleteCallback(onComplete,'ok');}};/**\r\n     * Applies all of the changes stored up in the onDisconnect_ tree.\r\n     * @private\r\n     */Repo.prototype.runOnDisconnectEvents_=function(){var _this=this;this.log_('onDisconnectEvents');var serverValues=this.generateServerValues();var resolvedOnDisconnectTree=resolveDeferredValueTree(this.onDisconnect_,serverValues);var events=[];resolvedOnDisconnectTree.forEachTree(Path.Empty,function(path,snap){events=events.concat(_this.serverSyncTree_.applyServerOverwrite(path,snap));var affectedPath=_this.abortTransactions_(path);_this.rerunTransactions_(affectedPath);});this.onDisconnect_=new SparseSnapshotTree();this.eventQueue_.raiseEventsForChangedPath(Path.Empty,events);};/**\r\n     * @param {!Path} path\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */Repo.prototype.onDisconnectCancel=function(path,onComplete){var _this=this;this.server_.onDisconnectCancel(path.toString(),function(status,errorReason){if(status==='ok'){_this.onDisconnect_.forget(path);}_this.callOnCompleteCallback(onComplete,status,errorReason);});};/**\r\n     * @param {!Path} path\r\n     * @param {*} value\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */Repo.prototype.onDisconnectSet=function(path,value,onComplete){var _this=this;var newNode=nodeFromJSON$1(value);this.server_.onDisconnectPut(path.toString(),newNode.val(/*export=*/true),function(status,errorReason){if(status==='ok'){_this.onDisconnect_.remember(path,newNode);}_this.callOnCompleteCallback(onComplete,status,errorReason);});};/**\r\n     * @param {!Path} path\r\n     * @param {*} value\r\n     * @param {*} priority\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */Repo.prototype.onDisconnectSetWithPriority=function(path,value,priority,onComplete){var _this=this;var newNode=nodeFromJSON$1(value,priority);this.server_.onDisconnectPut(path.toString(),newNode.val(/*export=*/true),function(status,errorReason){if(status==='ok'){_this.onDisconnect_.remember(path,newNode);}_this.callOnCompleteCallback(onComplete,status,errorReason);});};/**\r\n     * @param {!Path} path\r\n     * @param {*} childrenToMerge\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */Repo.prototype.onDisconnectUpdate=function(path,childrenToMerge,onComplete){var _this=this;if(util.isEmpty(childrenToMerge)){log(\"onDisconnect().update() called with empty data.  Don't do anything.\");this.callOnCompleteCallback(onComplete,'ok');return;}this.server_.onDisconnectMerge(path.toString(),childrenToMerge,function(status,errorReason){if(status==='ok'){util.forEach(childrenToMerge,function(childName,childNode){var newChildNode=nodeFromJSON$1(childNode);_this.onDisconnect_.remember(path.child(childName),newChildNode);});}_this.callOnCompleteCallback(onComplete,status,errorReason);});};/**\r\n     * @param {!Query} query\r\n     * @param {!EventRegistration} eventRegistration\r\n     */Repo.prototype.addEventCallbackForQuery=function(query,eventRegistration){var events;if(query.path.getFront()==='.info'){events=this.infoSyncTree_.addEventRegistration(query,eventRegistration);}else{events=this.serverSyncTree_.addEventRegistration(query,eventRegistration);}this.eventQueue_.raiseEventsAtPath(query.path,events);};/**\r\n     * @param {!Query} query\r\n     * @param {?EventRegistration} eventRegistration\r\n     */Repo.prototype.removeEventCallbackForQuery=function(query,eventRegistration){// These are guaranteed not to raise events, since we're not passing in a cancelError. However, we can future-proof\n// a little bit by handling the return values anyways.\nvar events;if(query.path.getFront()==='.info'){events=this.infoSyncTree_.removeEventRegistration(query,eventRegistration);}else{events=this.serverSyncTree_.removeEventRegistration(query,eventRegistration);}this.eventQueue_.raiseEventsAtPath(query.path,events);};Repo.prototype.interrupt=function(){if(this.persistentConnection_){this.persistentConnection_.interrupt(INTERRUPT_REASON);}};Repo.prototype.resume=function(){if(this.persistentConnection_){this.persistentConnection_.resume(INTERRUPT_REASON);}};Repo.prototype.stats=function(showDelta){if(showDelta===void 0){showDelta=false;}if(typeof console==='undefined')return;var stats;if(showDelta){if(!this.statsListener_)this.statsListener_=new StatsListener(this.stats_);stats=this.statsListener_.get();}else{stats=this.stats_.get();}var longestName=Object.keys(stats).reduce(function(previousValue,currentValue){return Math.max(currentValue.length,previousValue);},0);util.forEach(stats,function(stat,value){// pad stat names to be the same length (plus 2 extra spaces).\nfor(var i=stat.length;i<longestName+2;i++){stat+=' ';}console.log(stat+value);});};Repo.prototype.statsIncrementCounter=function(metric){this.stats_.incrementCounter(metric);this.statsReporter_.includeStat(metric);};/**\r\n     * @param {...*} var_args\r\n     * @private\r\n     */Repo.prototype.log_=function(){var var_args=[];for(var _i=0;_i<arguments.length;_i++){var_args[_i]=arguments[_i];}var prefix='';if(this.persistentConnection_){prefix=this.persistentConnection_.id+':';}log.apply(void 0,[prefix].concat(var_args));};/**\r\n     * @param {?function(?Error, *=)} callback\r\n     * @param {!string} status\r\n     * @param {?string=} errorReason\r\n     */Repo.prototype.callOnCompleteCallback=function(callback,status,errorReason){if(callback){exceptionGuard(function(){if(status=='ok'){callback(null);}else{var code=(status||'error').toUpperCase();var message=code;if(errorReason)message+=': '+errorReason;var error=new Error(message);error.code=code;callback(error);}});}};Object.defineProperty(Repo.prototype,\"database\",{get:function get(){return this.__database||(this.__database=new Database(this));},enumerable:true,configurable:true});return Repo;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Filters nodes by range and uses an IndexFilter to track any changes after filtering the node\r\n *\r\n * @constructor\r\n * @implements {NodeFilter}\r\n */var RangedFilter=/** @class */function(){/**\r\n     * @param {!QueryParams} params\r\n     */function RangedFilter(params){this.indexedFilter_=new IndexedFilter(params.getIndex());this.index_=params.getIndex();this.startPost_=RangedFilter.getStartPost_(params);this.endPost_=RangedFilter.getEndPost_(params);}/**\r\n     * @return {!NamedNode}\r\n     */RangedFilter.prototype.getStartPost=function(){return this.startPost_;};/**\r\n     * @return {!NamedNode}\r\n     */RangedFilter.prototype.getEndPost=function(){return this.endPost_;};/**\r\n     * @param {!NamedNode} node\r\n     * @return {boolean}\r\n     */RangedFilter.prototype.matches=function(node){return this.index_.compare(this.getStartPost(),node)<=0&&this.index_.compare(node,this.getEndPost())<=0;};/**\r\n     * @inheritDoc\r\n     */RangedFilter.prototype.updateChild=function(snap,key,newChild,affectedPath,source,optChangeAccumulator){if(!this.matches(new NamedNode(key,newChild))){newChild=ChildrenNode.EMPTY_NODE;}return this.indexedFilter_.updateChild(snap,key,newChild,affectedPath,source,optChangeAccumulator);};/**\r\n     * @inheritDoc\r\n     */RangedFilter.prototype.updateFullNode=function(oldSnap,newSnap,optChangeAccumulator){if(newSnap.isLeafNode()){// Make sure we have a children node with the correct index, not a leaf node;\nnewSnap=ChildrenNode.EMPTY_NODE;}var filtered=newSnap.withIndex(this.index_);// Don't support priorities on queries\nfiltered=filtered.updatePriority(ChildrenNode.EMPTY_NODE);var self=this;newSnap.forEachChild(PRIORITY_INDEX,function(key,childNode){if(!self.matches(new NamedNode(key,childNode))){filtered=filtered.updateImmediateChild(key,ChildrenNode.EMPTY_NODE);}});return this.indexedFilter_.updateFullNode(oldSnap,filtered,optChangeAccumulator);};/**\r\n     * @inheritDoc\r\n     */RangedFilter.prototype.updatePriority=function(oldSnap,newPriority){// Don't support priorities on queries\nreturn oldSnap;};/**\r\n     * @inheritDoc\r\n     */RangedFilter.prototype.filtersNodes=function(){return true;};/**\r\n     * @inheritDoc\r\n     */RangedFilter.prototype.getIndexedFilter=function(){return this.indexedFilter_;};/**\r\n     * @inheritDoc\r\n     */RangedFilter.prototype.getIndex=function(){return this.index_;};/**\r\n     * @param {!QueryParams} params\r\n     * @return {!NamedNode}\r\n     * @private\r\n     */RangedFilter.getStartPost_=function(params){if(params.hasStart()){var startName=params.getIndexStartName();return params.getIndex().makePost(params.getIndexStartValue(),startName);}else{return params.getIndex().minPost();}};/**\r\n     * @param {!QueryParams} params\r\n     * @return {!NamedNode}\r\n     * @private\r\n     */RangedFilter.getEndPost_=function(params){if(params.hasEnd()){var endName=params.getIndexEndName();return params.getIndex().makePost(params.getIndexEndValue(),endName);}else{return params.getIndex().maxPost();}};return RangedFilter;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Applies a limit and a range to a node and uses RangedFilter to do the heavy lifting where possible\r\n *\r\n * @constructor\r\n * @implements {NodeFilter}\r\n */var LimitedFilter=/** @class */function(){/**\r\n     * @param {!QueryParams} params\r\n     */function LimitedFilter(params){this.rangedFilter_=new RangedFilter(params);this.index_=params.getIndex();this.limit_=params.getLimit();this.reverse_=!params.isViewFromLeft();}/**\r\n     * @inheritDoc\r\n     */LimitedFilter.prototype.updateChild=function(snap,key,newChild,affectedPath,source,optChangeAccumulator){if(!this.rangedFilter_.matches(new NamedNode(key,newChild))){newChild=ChildrenNode.EMPTY_NODE;}if(snap.getImmediateChild(key).equals(newChild)){// No change\nreturn snap;}else if(snap.numChildren()<this.limit_){return this.rangedFilter_.getIndexedFilter().updateChild(snap,key,newChild,affectedPath,source,optChangeAccumulator);}else{return this.fullLimitUpdateChild_(snap,key,newChild,source,optChangeAccumulator);}};/**\r\n     * @inheritDoc\r\n     */LimitedFilter.prototype.updateFullNode=function(oldSnap,newSnap,optChangeAccumulator){var filtered;if(newSnap.isLeafNode()||newSnap.isEmpty()){// Make sure we have a children node with the correct index, not a leaf node;\nfiltered=ChildrenNode.EMPTY_NODE.withIndex(this.index_);}else{if(this.limit_*2<newSnap.numChildren()&&newSnap.isIndexed(this.index_)){// Easier to build up a snapshot, since what we're given has more than twice the elements we want\nfiltered=ChildrenNode.EMPTY_NODE.withIndex(this.index_);// anchor to the startPost, endPost, or last element as appropriate\nvar iterator=void 0;if(this.reverse_){iterator=newSnap.getReverseIteratorFrom(this.rangedFilter_.getEndPost(),this.index_);}else{iterator=newSnap.getIteratorFrom(this.rangedFilter_.getStartPost(),this.index_);}var count=0;while(iterator.hasNext()&&count<this.limit_){var next=iterator.getNext();var inRange=void 0;if(this.reverse_){inRange=this.index_.compare(this.rangedFilter_.getStartPost(),next)<=0;}else{inRange=this.index_.compare(next,this.rangedFilter_.getEndPost())<=0;}if(inRange){filtered=filtered.updateImmediateChild(next.name,next.node);count++;}else{// if we have reached the end post, we cannot keep adding elemments\nbreak;}}}else{// The snap contains less than twice the limit. Faster to delete from the snap than build up a new one\nfiltered=newSnap.withIndex(this.index_);// Don't support priorities on queries\nfiltered=filtered.updatePriority(ChildrenNode.EMPTY_NODE);var startPost=void 0;var endPost=void 0;var cmp=void 0;var iterator=void 0;if(this.reverse_){iterator=filtered.getReverseIterator(this.index_);startPost=this.rangedFilter_.getEndPost();endPost=this.rangedFilter_.getStartPost();var indexCompare_1=this.index_.getCompare();cmp=function cmp(a,b){return indexCompare_1(b,a);};}else{iterator=filtered.getIterator(this.index_);startPost=this.rangedFilter_.getStartPost();endPost=this.rangedFilter_.getEndPost();cmp=this.index_.getCompare();}var count=0;var foundStartPost=false;while(iterator.hasNext()){var next=iterator.getNext();if(!foundStartPost&&cmp(startPost,next)<=0){// start adding\nfoundStartPost=true;}var inRange=foundStartPost&&count<this.limit_&&cmp(next,endPost)<=0;if(inRange){count++;}else{filtered=filtered.updateImmediateChild(next.name,ChildrenNode.EMPTY_NODE);}}}}return this.rangedFilter_.getIndexedFilter().updateFullNode(oldSnap,filtered,optChangeAccumulator);};/**\r\n     * @inheritDoc\r\n     */LimitedFilter.prototype.updatePriority=function(oldSnap,newPriority){// Don't support priorities on queries\nreturn oldSnap;};/**\r\n     * @inheritDoc\r\n     */LimitedFilter.prototype.filtersNodes=function(){return true;};/**\r\n     * @inheritDoc\r\n     */LimitedFilter.prototype.getIndexedFilter=function(){return this.rangedFilter_.getIndexedFilter();};/**\r\n     * @inheritDoc\r\n     */LimitedFilter.prototype.getIndex=function(){return this.index_;};/**\r\n     * @param {!Node} snap\r\n     * @param {string} childKey\r\n     * @param {!Node} childSnap\r\n     * @param {!CompleteChildSource} source\r\n     * @param {?ChildChangeAccumulator} changeAccumulator\r\n     * @return {!Node}\r\n     * @private\r\n     */LimitedFilter.prototype.fullLimitUpdateChild_=function(snap,childKey,childSnap,source,changeAccumulator){// TODO: rename all cache stuff etc to general snap terminology\nvar cmp;if(this.reverse_){var indexCmp_1=this.index_.getCompare();cmp=function cmp(a,b){return indexCmp_1(b,a);};}else{cmp=this.index_.getCompare();}var oldEventCache=snap;util.assert(oldEventCache.numChildren()==this.limit_,'');var newChildNamedNode=new NamedNode(childKey,childSnap);var windowBoundary=this.reverse_?oldEventCache.getFirstChild(this.index_):oldEventCache.getLastChild(this.index_);var inRange=this.rangedFilter_.matches(newChildNamedNode);if(oldEventCache.hasChild(childKey)){var oldChildSnap=oldEventCache.getImmediateChild(childKey);var nextChild=source.getChildAfterChild(this.index_,windowBoundary,this.reverse_);while(nextChild!=null&&(nextChild.name==childKey||oldEventCache.hasChild(nextChild.name))){// There is a weird edge case where a node is updated as part of a merge in the write tree, but hasn't\n// been applied to the limited filter yet. Ignore this next child which will be updated later in\n// the limited filter...\nnextChild=source.getChildAfterChild(this.index_,nextChild,this.reverse_);}var compareNext=nextChild==null?1:cmp(nextChild,newChildNamedNode);var remainsInWindow=inRange&&!childSnap.isEmpty()&&compareNext>=0;if(remainsInWindow){if(changeAccumulator!=null){changeAccumulator.trackChildChange(Change.childChangedChange(childKey,childSnap,oldChildSnap));}return oldEventCache.updateImmediateChild(childKey,childSnap);}else{if(changeAccumulator!=null){changeAccumulator.trackChildChange(Change.childRemovedChange(childKey,oldChildSnap));}var newEventCache=oldEventCache.updateImmediateChild(childKey,ChildrenNode.EMPTY_NODE);var nextChildInRange=nextChild!=null&&this.rangedFilter_.matches(nextChild);if(nextChildInRange){if(changeAccumulator!=null){changeAccumulator.trackChildChange(Change.childAddedChange(nextChild.name,nextChild.node));}return newEventCache.updateImmediateChild(nextChild.name,nextChild.node);}else{return newEventCache;}}}else if(childSnap.isEmpty()){// we're deleting a node, but it was not in the window, so ignore it\nreturn snap;}else if(inRange){if(cmp(windowBoundary,newChildNamedNode)>=0){if(changeAccumulator!=null){changeAccumulator.trackChildChange(Change.childRemovedChange(windowBoundary.name,windowBoundary.node));changeAccumulator.trackChildChange(Change.childAddedChange(childKey,childSnap));}return oldEventCache.updateImmediateChild(childKey,childSnap).updateImmediateChild(windowBoundary.name,ChildrenNode.EMPTY_NODE);}else{return snap;}}else{return snap;}};return LimitedFilter;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * This class is an immutable-from-the-public-api struct containing a set of query parameters defining a\r\n * range to be returned for a particular location. It is assumed that validation of parameters is done at the\r\n * user-facing API level, so it is not done here.\r\n * @constructor\r\n */var QueryParams=/** @class */function(){function QueryParams(){this.limitSet_=false;this.startSet_=false;this.startNameSet_=false;this.endSet_=false;this.endNameSet_=false;this.limit_=0;this.viewFrom_='';this.indexStartValue_=null;this.indexStartName_='';this.indexEndValue_=null;this.indexEndName_='';this.index_=PRIORITY_INDEX;}/**\r\n     * @return {boolean}\r\n     */QueryParams.prototype.hasStart=function(){return this.startSet_;};/**\r\n     * @return {boolean} True if it would return from left.\r\n     */QueryParams.prototype.isViewFromLeft=function(){if(this.viewFrom_===''){// limit(), rather than limitToFirst or limitToLast was called.\n// This means that only one of startSet_ and endSet_ is true. Use them\n// to calculate which side of the view to anchor to. If neither is set,\n// anchor to the end.\nreturn this.startSet_;}else{return this.viewFrom_===QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT;}};/**\r\n     * Only valid to call if hasStart() returns true\r\n     * @return {*}\r\n     */QueryParams.prototype.getIndexStartValue=function(){util.assert(this.startSet_,'Only valid if start has been set');return this.indexStartValue_;};/**\r\n     * Only valid to call if hasStart() returns true.\r\n     * Returns the starting key name for the range defined by these query parameters\r\n     * @return {!string}\r\n     */QueryParams.prototype.getIndexStartName=function(){util.assert(this.startSet_,'Only valid if start has been set');if(this.startNameSet_){return this.indexStartName_;}else{return MIN_NAME;}};/**\r\n     * @return {boolean}\r\n     */QueryParams.prototype.hasEnd=function(){return this.endSet_;};/**\r\n     * Only valid to call if hasEnd() returns true.\r\n     * @return {*}\r\n     */QueryParams.prototype.getIndexEndValue=function(){util.assert(this.endSet_,'Only valid if end has been set');return this.indexEndValue_;};/**\r\n     * Only valid to call if hasEnd() returns true.\r\n     * Returns the end key name for the range defined by these query parameters\r\n     * @return {!string}\r\n     */QueryParams.prototype.getIndexEndName=function(){util.assert(this.endSet_,'Only valid if end has been set');if(this.endNameSet_){return this.indexEndName_;}else{return MAX_NAME;}};/**\r\n     * @return {boolean}\r\n     */QueryParams.prototype.hasLimit=function(){return this.limitSet_;};/**\r\n     * @return {boolean} True if a limit has been set and it has been explicitly anchored\r\n     */QueryParams.prototype.hasAnchoredLimit=function(){return this.limitSet_&&this.viewFrom_!=='';};/**\r\n     * Only valid to call if hasLimit() returns true\r\n     * @return {!number}\r\n     */QueryParams.prototype.getLimit=function(){util.assert(this.limitSet_,'Only valid if limit has been set');return this.limit_;};/**\r\n     * @return {!Index}\r\n     */QueryParams.prototype.getIndex=function(){return this.index_;};/**\r\n     * @return {!QueryParams}\r\n     * @private\r\n     */QueryParams.prototype.copy_=function(){var copy=new QueryParams();copy.limitSet_=this.limitSet_;copy.limit_=this.limit_;copy.startSet_=this.startSet_;copy.indexStartValue_=this.indexStartValue_;copy.startNameSet_=this.startNameSet_;copy.indexStartName_=this.indexStartName_;copy.endSet_=this.endSet_;copy.indexEndValue_=this.indexEndValue_;copy.endNameSet_=this.endNameSet_;copy.indexEndName_=this.indexEndName_;copy.index_=this.index_;copy.viewFrom_=this.viewFrom_;return copy;};/**\r\n     * @param {!number} newLimit\r\n     * @return {!QueryParams}\r\n     */QueryParams.prototype.limit=function(newLimit){var newParams=this.copy_();newParams.limitSet_=true;newParams.limit_=newLimit;newParams.viewFrom_='';return newParams;};/**\r\n     * @param {!number} newLimit\r\n     * @return {!QueryParams}\r\n     */QueryParams.prototype.limitToFirst=function(newLimit){var newParams=this.copy_();newParams.limitSet_=true;newParams.limit_=newLimit;newParams.viewFrom_=QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT;return newParams;};/**\r\n     * @param {!number} newLimit\r\n     * @return {!QueryParams}\r\n     */QueryParams.prototype.limitToLast=function(newLimit){var newParams=this.copy_();newParams.limitSet_=true;newParams.limit_=newLimit;newParams.viewFrom_=QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT;return newParams;};/**\r\n     * @param {*} indexValue\r\n     * @param {?string=} key\r\n     * @return {!QueryParams}\r\n     */QueryParams.prototype.startAt=function(indexValue,key){var newParams=this.copy_();newParams.startSet_=true;if(!(indexValue!==undefined)){indexValue=null;}newParams.indexStartValue_=indexValue;if(key!=null){newParams.startNameSet_=true;newParams.indexStartName_=key;}else{newParams.startNameSet_=false;newParams.indexStartName_='';}return newParams;};/**\r\n     * @param {*} indexValue\r\n     * @param {?string=} key\r\n     * @return {!QueryParams}\r\n     */QueryParams.prototype.endAt=function(indexValue,key){var newParams=this.copy_();newParams.endSet_=true;if(!(indexValue!==undefined)){indexValue=null;}newParams.indexEndValue_=indexValue;if(key!==undefined){newParams.endNameSet_=true;newParams.indexEndName_=key;}else{newParams.endNameSet_=false;newParams.indexEndName_='';}return newParams;};/**\r\n     * @param {!Index} index\r\n     * @return {!QueryParams}\r\n     */QueryParams.prototype.orderBy=function(index){var newParams=this.copy_();newParams.index_=index;return newParams;};/**\r\n     * @return {!Object}\r\n     */QueryParams.prototype.getQueryObject=function(){var WIRE_PROTOCOL_CONSTANTS=QueryParams.WIRE_PROTOCOL_CONSTANTS_;var obj={};if(this.startSet_){obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_VALUE]=this.indexStartValue_;if(this.startNameSet_){obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_NAME]=this.indexStartName_;}}if(this.endSet_){obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_VALUE]=this.indexEndValue_;if(this.endNameSet_){obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_NAME]=this.indexEndName_;}}if(this.limitSet_){obj[WIRE_PROTOCOL_CONSTANTS.LIMIT]=this.limit_;var viewFrom=this.viewFrom_;if(viewFrom===''){if(this.isViewFromLeft()){viewFrom=WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_LEFT;}else{viewFrom=WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_RIGHT;}}obj[WIRE_PROTOCOL_CONSTANTS.VIEW_FROM]=viewFrom;}// For now, priority index is the default, so we only specify if it's some other index\nif(this.index_!==PRIORITY_INDEX){obj[WIRE_PROTOCOL_CONSTANTS.INDEX]=this.index_.toString();}return obj;};/**\r\n     * @return {boolean}\r\n     */QueryParams.prototype.loadsAllData=function(){return!(this.startSet_||this.endSet_||this.limitSet_);};/**\r\n     * @return {boolean}\r\n     */QueryParams.prototype.isDefault=function(){return this.loadsAllData()&&this.index_==PRIORITY_INDEX;};/**\r\n     * @return {!NodeFilter}\r\n     */QueryParams.prototype.getNodeFilter=function(){if(this.loadsAllData()){return new IndexedFilter(this.getIndex());}else if(this.hasLimit()){return new LimitedFilter(this);}else{return new RangedFilter(this);}};/**\r\n     * Returns a set of REST query string parameters representing this query.\r\n     *\r\n     * @return {!Object.<string,*>} query string parameters\r\n     */QueryParams.prototype.toRestQueryStringParameters=function(){var REST_CONSTANTS=QueryParams.REST_QUERY_CONSTANTS_;var qs={};if(this.isDefault()){return qs;}var orderBy;if(this.index_===PRIORITY_INDEX){orderBy=REST_CONSTANTS.PRIORITY_INDEX;}else if(this.index_===VALUE_INDEX){orderBy=REST_CONSTANTS.VALUE_INDEX;}else if(this.index_===KEY_INDEX){orderBy=REST_CONSTANTS.KEY_INDEX;}else{util.assert(this.index_ instanceof PathIndex,'Unrecognized index type!');orderBy=this.index_.toString();}qs[REST_CONSTANTS.ORDER_BY]=util.stringify(orderBy);if(this.startSet_){qs[REST_CONSTANTS.START_AT]=util.stringify(this.indexStartValue_);if(this.startNameSet_){qs[REST_CONSTANTS.START_AT]+=','+util.stringify(this.indexStartName_);}}if(this.endSet_){qs[REST_CONSTANTS.END_AT]=util.stringify(this.indexEndValue_);if(this.endNameSet_){qs[REST_CONSTANTS.END_AT]+=','+util.stringify(this.indexEndName_);}}if(this.limitSet_){if(this.isViewFromLeft()){qs[REST_CONSTANTS.LIMIT_TO_FIRST]=this.limit_;}else{qs[REST_CONSTANTS.LIMIT_TO_LAST]=this.limit_;}}return qs;};/**\r\n     * Wire Protocol Constants\r\n     * @const\r\n     * @enum {string}\r\n     * @private\r\n     */QueryParams.WIRE_PROTOCOL_CONSTANTS_={INDEX_START_VALUE:'sp',INDEX_START_NAME:'sn',INDEX_END_VALUE:'ep',INDEX_END_NAME:'en',LIMIT:'l',VIEW_FROM:'vf',VIEW_FROM_LEFT:'l',VIEW_FROM_RIGHT:'r',INDEX:'i'};/**\r\n     * REST Query Constants\r\n     * @const\r\n     * @enum {string}\r\n     * @private\r\n     */QueryParams.REST_QUERY_CONSTANTS_={ORDER_BY:'orderBy',PRIORITY_INDEX:'$priority',VALUE_INDEX:'$value',KEY_INDEX:'$key',START_AT:'startAt',END_AT:'endAt',LIMIT_TO_FIRST:'limitToFirst',LIMIT_TO_LAST:'limitToLast'};/**\r\n     * Default, empty query parameters\r\n     * @type {!QueryParams}\r\n     * @const\r\n     */QueryParams.DEFAULT=new QueryParams();return QueryParams;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var Reference=/** @class */function(_super){tslib_1.__extends(Reference,_super);/**\r\n     * Call options:\r\n     *   new Reference(Repo, Path) or\r\n     *   new Reference(url: string, string|RepoManager)\r\n     *\r\n     * Externally - this is the firebase.database.Reference type.\r\n     *\r\n     * @param {!Repo} repo\r\n     * @param {(!Path)} path\r\n     * @extends {Query}\r\n     */function Reference(repo,path){var _this=this;if(!(repo instanceof Repo)){throw new Error('new Reference() no longer supported - use app.database().');}// call Query's constructor, passing in the repo and path.\n_this=_super.call(this,repo,path,QueryParams.DEFAULT,false)||this;return _this;}/** @return {?string} */Reference.prototype.getKey=function(){util.validateArgCount('Reference.key',0,0,arguments.length);if(this.path.isEmpty())return null;else return this.path.getBack();};/**\r\n     * @param {!(string|Path)} pathString\r\n     * @return {!Reference}\r\n     */Reference.prototype.child=function(pathString){util.validateArgCount('Reference.child',1,1,arguments.length);if(typeof pathString==='number'){pathString=String(pathString);}else if(!(pathString instanceof Path)){if(this.path.getFront()===null)validateRootPathString('Reference.child',1,pathString,false);else validatePathString('Reference.child',1,pathString,false);}return new Reference(this.repo,this.path.child(pathString));};/** @return {?Reference} */Reference.prototype.getParent=function(){util.validateArgCount('Reference.parent',0,0,arguments.length);var parentPath=this.path.parent();return parentPath===null?null:new Reference(this.repo,parentPath);};/** @return {!Reference} */Reference.prototype.getRoot=function(){util.validateArgCount('Reference.root',0,0,arguments.length);var ref=this;while(ref.getParent()!==null){ref=ref.getParent();}return ref;};/** @return {!Database} */Reference.prototype.databaseProp=function(){return this.repo.database;};/**\r\n     * @param {*} newVal\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */Reference.prototype.set=function(newVal,onComplete){util.validateArgCount('Reference.set',1,2,arguments.length);validateWritablePath('Reference.set',this.path);validateFirebaseDataArg('Reference.set',1,newVal,this.path,false);util.validateCallback('Reference.set',2,onComplete,true);var deferred=new util.Deferred();this.repo.setWithPriority(this.path,newVal,/*priority=*/null,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {!Object} objectToMerge\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */Reference.prototype.update=function(objectToMerge,onComplete){util.validateArgCount('Reference.update',1,2,arguments.length);validateWritablePath('Reference.update',this.path);if(Array.isArray(objectToMerge)){var newObjectToMerge={};for(var i=0;i<objectToMerge.length;++i){newObjectToMerge[''+i]=objectToMerge[i];}objectToMerge=newObjectToMerge;warn('Passing an Array to Firebase.update() is deprecated. '+'Use set() if you want to overwrite the existing data, or '+'an Object with integer keys if you really do want to '+'only update some of the children.');}validateFirebaseMergeDataArg('Reference.update',1,objectToMerge,this.path,false);util.validateCallback('Reference.update',2,onComplete,true);var deferred=new util.Deferred();this.repo.update(this.path,objectToMerge,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {*} newVal\r\n     * @param {string|number|null} newPriority\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */Reference.prototype.setWithPriority=function(newVal,newPriority,onComplete){util.validateArgCount('Reference.setWithPriority',2,3,arguments.length);validateWritablePath('Reference.setWithPriority',this.path);validateFirebaseDataArg('Reference.setWithPriority',1,newVal,this.path,false);validatePriority('Reference.setWithPriority',2,newPriority,false);util.validateCallback('Reference.setWithPriority',3,onComplete,true);if(this.getKey()==='.length'||this.getKey()==='.keys')throw'Reference.setWithPriority failed: '+this.getKey()+' is a read-only object.';var deferred=new util.Deferred();this.repo.setWithPriority(this.path,newVal,newPriority,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */Reference.prototype.remove=function(onComplete){util.validateArgCount('Reference.remove',0,1,arguments.length);validateWritablePath('Reference.remove',this.path);util.validateCallback('Reference.remove',1,onComplete,true);return this.set(null,onComplete);};/**\r\n     * @param {function(*):*} transactionUpdate\r\n     * @param {(function(?Error, boolean, ?DataSnapshot))=} onComplete\r\n     * @param {boolean=} applyLocally\r\n     * @return {!Promise}\r\n     */Reference.prototype.transaction=function(transactionUpdate,onComplete,applyLocally){util.validateArgCount('Reference.transaction',1,3,arguments.length);validateWritablePath('Reference.transaction',this.path);util.validateCallback('Reference.transaction',1,transactionUpdate,false);util.validateCallback('Reference.transaction',2,onComplete,true);// NOTE: applyLocally is an internal-only option for now.  We need to decide if we want to keep it and how\n// to expose it.\nvalidateBoolean('Reference.transaction',3,applyLocally,true);if(this.getKey()==='.length'||this.getKey()==='.keys')throw'Reference.transaction failed: '+this.getKey()+' is a read-only object.';if(applyLocally===undefined)applyLocally=true;var deferred=new util.Deferred();if(typeof onComplete==='function'){deferred.promise.catch(function(){});}var promiseComplete=function promiseComplete(error,committed,snapshot){if(error){deferred.reject(error);}else{deferred.resolve(new TransactionResult(committed,snapshot));}if(typeof onComplete==='function'){onComplete(error,committed,snapshot);}};this.repo.startTransaction(this.path,transactionUpdate,promiseComplete,applyLocally);return deferred.promise;};/**\r\n     * @param {string|number|null} priority\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */Reference.prototype.setPriority=function(priority,onComplete){util.validateArgCount('Reference.setPriority',1,2,arguments.length);validateWritablePath('Reference.setPriority',this.path);validatePriority('Reference.setPriority',1,priority,false);util.validateCallback('Reference.setPriority',2,onComplete,true);var deferred=new util.Deferred();this.repo.setWithPriority(this.path.child('.priority'),priority,null,deferred.wrapCallback(onComplete));return deferred.promise;};/**\r\n     * @param {*=} value\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Reference}\r\n     */Reference.prototype.push=function(value,onComplete){util.validateArgCount('Reference.push',0,2,arguments.length);validateWritablePath('Reference.push',this.path);validateFirebaseDataArg('Reference.push',1,value,this.path,true);util.validateCallback('Reference.push',2,onComplete,true);var now=this.repo.serverTime();var name=nextPushId(now);// push() returns a ThennableReference whose promise is fulfilled with a regular Reference.\n// We use child() to create handles to two different references. The first is turned into a\n// ThennableReference below by adding then() and catch() methods and is used as the\n// return value of push(). The second remains a regular Reference and is used as the fulfilled\n// value of the first ThennableReference.\nvar thennablePushRef=this.child(name);var pushRef=this.child(name);var promise;if(value!=null){promise=thennablePushRef.set(value,onComplete).then(function(){return pushRef;});}else{promise=Promise.resolve(pushRef);}thennablePushRef.then=promise.then.bind(promise);thennablePushRef.catch=promise.then.bind(promise,undefined);if(typeof onComplete==='function'){promise.catch(function(){});}return thennablePushRef;};/**\r\n     * @return {!OnDisconnect}\r\n     */Reference.prototype.onDisconnect=function(){validateWritablePath('Reference.onDisconnect',this.path);return new OnDisconnect(this.repo,this.path);};Object.defineProperty(Reference.prototype,\"database\",{get:function get(){return this.databaseProp();},enumerable:true,configurable:true});Object.defineProperty(Reference.prototype,\"key\",{get:function get(){return this.getKey();},enumerable:true,configurable:true});Object.defineProperty(Reference.prototype,\"parent\",{get:function get(){return this.getParent();},enumerable:true,configurable:true});Object.defineProperty(Reference.prototype,\"root\",{get:function get(){return this.getRoot();},enumerable:true,configurable:true});return Reference;}(Query);/**\r\n * Define reference constructor in various modules\r\n *\r\n * We are doing this here to avoid several circular\r\n * dependency issues\r\n */Query.__referenceConstructor=Reference;SyncPoint.__referenceConstructor=Reference;/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Node in a Tree.\r\n */var TreeNode=/** @class */function(){function TreeNode(){// TODO: Consider making accessors that create children and value lazily or\n// separate Internal / Leaf 'types'.\nthis.children={};this.childCount=0;this.value=null;}return TreeNode;}();/**\r\n * A light-weight tree, traversable by path.  Nodes can have both values and children.\r\n * Nodes are not enumerated (by forEachChild) unless they have a value or non-empty\r\n * children.\r\n */var Tree=/** @class */function(){/**\r\n     * @template T\r\n     * @param {string=} name_ Optional name of the node.\r\n     * @param {Tree=} parent_ Optional parent node.\r\n     * @param {TreeNode=} node_ Optional node to wrap.\r\n     */function Tree(name_,parent_,node_){if(name_===void 0){name_='';}if(parent_===void 0){parent_=null;}if(node_===void 0){node_=new TreeNode();}this.name_=name_;this.parent_=parent_;this.node_=node_;}/**\r\n     * Returns a sub-Tree for the given path.\r\n     *\r\n     * @param {!(string|Path)} pathObj Path to look up.\r\n     * @return {!Tree.<T>} Tree for path.\r\n     */Tree.prototype.subTree=function(pathObj){// TODO: Require pathObj to be Path?\nvar path=pathObj instanceof Path?pathObj:new Path(pathObj);var child=this,next;while((next=path.getFront())!==null){var childNode=util.safeGet(child.node_.children,next)||new TreeNode();child=new Tree(next,child,childNode);path=path.popFront();}return child;};/**\r\n     * Returns the data associated with this tree node.\r\n     *\r\n     * @return {?T} The data or null if no data exists.\r\n     */Tree.prototype.getValue=function(){return this.node_.value;};/**\r\n     * Sets data to this tree node.\r\n     *\r\n     * @param {!T} value Value to set.\r\n     */Tree.prototype.setValue=function(value){util.assert(typeof value!=='undefined','Cannot set value to undefined');this.node_.value=value;this.updateParents_();};/**\r\n     * Clears the contents of the tree node (its value and all children).\r\n     */Tree.prototype.clear=function(){this.node_.value=null;this.node_.children={};this.node_.childCount=0;this.updateParents_();};/**\r\n     * @return {boolean} Whether the tree has any children.\r\n     */Tree.prototype.hasChildren=function(){return this.node_.childCount>0;};/**\r\n     * @return {boolean} Whether the tree is empty (no value or children).\r\n     */Tree.prototype.isEmpty=function(){return this.getValue()===null&&!this.hasChildren();};/**\r\n     * Calls action for each child of this tree node.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called for each child.\r\n     */Tree.prototype.forEachChild=function(action){var _this=this;util.forEach(this.node_.children,function(child,childTree){action(new Tree(child,_this,childTree));});};/**\r\n     * Does a depth-first traversal of this node's descendants, calling action for each one.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called for each child.\r\n     * @param {boolean=} includeSelf Whether to call action on this node as well. Defaults to\r\n     *   false.\r\n     * @param {boolean=} childrenFirst Whether to call action on children before calling it on\r\n     *   parent.\r\n     */Tree.prototype.forEachDescendant=function(action,includeSelf,childrenFirst){if(includeSelf&&!childrenFirst)action(this);this.forEachChild(function(child){child.forEachDescendant(action,/*includeSelf=*/true,childrenFirst);});if(includeSelf&&childrenFirst)action(this);};/**\r\n     * Calls action on each ancestor node.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called on each parent; return\r\n     *   true to abort.\r\n     * @param {boolean=} includeSelf Whether to call action on this node as well.\r\n     * @return {boolean} true if the action callback returned true.\r\n     */Tree.prototype.forEachAncestor=function(action,includeSelf){var node=includeSelf?this:this.parent();while(node!==null){if(action(node)){return true;}node=node.parent();}return false;};/**\r\n     * Does a depth-first traversal of this node's descendants.  When a descendant with a value\r\n     * is found, action is called on it and traversal does not continue inside the node.\r\n     * Action is *not* called on this node.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called for each child.\r\n     */Tree.prototype.forEachImmediateDescendantWithValue=function(action){this.forEachChild(function(child){if(child.getValue()!==null)action(child);else child.forEachImmediateDescendantWithValue(action);});};/**\r\n     * @return {!Path} The path of this tree node, as a Path.\r\n     */Tree.prototype.path=function(){return new Path(this.parent_===null?this.name_:this.parent_.path()+'/'+this.name_);};/**\r\n     * @return {string} The name of the tree node.\r\n     */Tree.prototype.name=function(){return this.name_;};/**\r\n     * @return {?Tree} The parent tree node, or null if this is the root of the tree.\r\n     */Tree.prototype.parent=function(){return this.parent_;};/**\r\n     * Adds or removes this child from its parent based on whether it's empty or not.\r\n     *\r\n     * @private\r\n     */Tree.prototype.updateParents_=function(){if(this.parent_!==null)this.parent_.updateChild_(this.name_,this);};/**\r\n     * Adds or removes the passed child to this tree node, depending on whether it's empty.\r\n     *\r\n     * @param {string} childName The name of the child to update.\r\n     * @param {!Tree.<T>} child The child to update.\r\n     * @private\r\n     */Tree.prototype.updateChild_=function(childName,child){var childEmpty=child.isEmpty();var childExists=util.contains(this.node_.children,childName);if(childEmpty&&childExists){delete this.node_.children[childName];this.node_.childCount--;this.updateParents_();}else if(!childEmpty&&!childExists){this.node_.children[childName]=child.node_;this.node_.childCount++;this.updateParents_();}};return Tree;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */// TODO: This is pretty messy.  Ideally, a lot of this would move into FirebaseData, or a transaction-specific\n// component used by FirebaseData, but it has ties to user callbacks (transaction update and onComplete) as well\n// as the realtime connection (to send transactions to the server).  So that all needs to be decoupled first.\n// For now it's part of Repo, but in its own file.\n/**\r\n * @enum {number}\r\n */var TransactionStatus;(function(TransactionStatus){// We've run the transaction and updated transactionResultData_ with the result, but it isn't currently sent to the\n// server. A transaction will go from RUN -> SENT -> RUN if it comes back from the server as rejected due to\n// mismatched hash.\nTransactionStatus[TransactionStatus[\"RUN\"]=0]=\"RUN\";// We've run the transaction and sent it to the server and it's currently outstanding (hasn't come back as accepted\n// or rejected yet).\nTransactionStatus[TransactionStatus[\"SENT\"]=1]=\"SENT\";// Temporary state used to mark completed transactions (whether successful or aborted).  The transaction will be\n// removed when we get a chance to prune completed ones.\nTransactionStatus[TransactionStatus[\"COMPLETED\"]=2]=\"COMPLETED\";// Used when an already-sent transaction needs to be aborted (e.g. due to a conflicting set() call that was made).\n// If it comes back as unsuccessful, we'll abort it.\nTransactionStatus[TransactionStatus[\"SENT_NEEDS_ABORT\"]=3]=\"SENT_NEEDS_ABORT\";// Temporary state used to mark transactions that need to be aborted.\nTransactionStatus[TransactionStatus[\"NEEDS_ABORT\"]=4]=\"NEEDS_ABORT\";})(TransactionStatus||(TransactionStatus={}));/**\r\n * If a transaction does not succeed after 25 retries, we abort it.  Among other things this ensure that if there's\r\n * ever a bug causing a mismatch between client / server hashes for some data, we won't retry indefinitely.\r\n * @type {number}\r\n * @const\r\n * @private\r\n */Repo.MAX_TRANSACTION_RETRIES_=25;/**\r\n * Setup the transaction data structures\r\n * @private\r\n */Repo.prototype.transactions_init_=function(){/**\r\n     * Stores queues of outstanding transactions for Firebase locations.\r\n     *\r\n     * @type {!Tree.<Array.<!Transaction>>}\r\n     * @private\r\n     */this.transactionQueueTree_=new Tree();};/**\r\n * Creates a new transaction, adds it to the transactions we're tracking, and sends it to the server if possible.\r\n *\r\n * @param {!Path} path Path at which to do transaction.\r\n * @param {function(*):*} transactionUpdate Update callback.\r\n * @param {?function(?Error, boolean, ?DataSnapshot)} onComplete Completion callback.\r\n * @param {boolean} applyLocally Whether or not to make intermediate results visible\r\n */Repo.prototype.startTransaction=function(path,transactionUpdate,onComplete,applyLocally){this.log_('transaction on '+path);// Add a watch to make sure we get server updates.\nvar valueCallback=function valueCallback(){};var watchRef=new Reference(this,path);watchRef.on('value',valueCallback);var unwatcher=function unwatcher(){watchRef.off('value',valueCallback);};// Initialize transaction.\nvar transaction={path:path,update:transactionUpdate,onComplete:onComplete,// One of TransactionStatus enums.\nstatus:null,// Used when combining transactions at different locations to figure out which one goes first.\norder:LUIDGenerator(),// Whether to raise local events for this transaction.\napplyLocally:applyLocally,// Count of how many times we've retried the transaction.\nretryCount:0,// Function to call to clean up our .on() listener.\nunwatcher:unwatcher,// Stores why a transaction was aborted.\nabortReason:null,currentWriteId:null,currentInputSnapshot:null,currentOutputSnapshotRaw:null,currentOutputSnapshotResolved:null};// Run transaction initially.\nvar currentState=this.getLatestState_(path);transaction.currentInputSnapshot=currentState;var newVal=transaction.update(currentState.val());if(newVal===undefined){// Abort transaction.\ntransaction.unwatcher();transaction.currentOutputSnapshotRaw=null;transaction.currentOutputSnapshotResolved=null;if(transaction.onComplete){// We just set the input snapshot, so this cast should be safe\nvar snapshot=new DataSnapshot(transaction.currentInputSnapshot,new Reference(this,transaction.path),PRIORITY_INDEX);transaction.onComplete(null,false,snapshot);}}else{validateFirebaseData('transaction failed: Data returned ',newVal,transaction.path);// Mark as run and add to our queue.\ntransaction.status=TransactionStatus.RUN;var queueNode=this.transactionQueueTree_.subTree(path);var nodeQueue=queueNode.getValue()||[];nodeQueue.push(transaction);queueNode.setValue(nodeQueue);// Update visibleData and raise events\n// Note: We intentionally raise events after updating all of our transaction state, since the user could\n// start new transactions from the event callbacks.\nvar priorityForNode=void 0;if(typeof newVal==='object'&&newVal!==null&&util.contains(newVal,'.priority')){priorityForNode=util.safeGet(newVal,'.priority');util.assert(isValidPriority(priorityForNode),'Invalid priority returned by transaction. '+'Priority must be a valid string, finite number, server value, or null.');}else{var currentNode=this.serverSyncTree_.calcCompleteEventCache(path)||ChildrenNode.EMPTY_NODE;priorityForNode=currentNode.getPriority().val();}priorityForNode/** @type {null|number|string} */=priorityForNode;var serverValues=this.generateServerValues();var newNodeUnresolved=nodeFromJSON$1(newVal,priorityForNode);var newNode=resolveDeferredValueSnapshot(newNodeUnresolved,serverValues);transaction.currentOutputSnapshotRaw=newNodeUnresolved;transaction.currentOutputSnapshotResolved=newNode;transaction.currentWriteId=this.getNextWriteId_();var events=this.serverSyncTree_.applyUserOverwrite(path,newNode,transaction.currentWriteId,transaction.applyLocally);this.eventQueue_.raiseEventsForChangedPath(path,events);this.sendReadyTransactions_();}};/**\r\n * @param {!Path} path\r\n * @param {Array.<number>=} excludeSets A specific set to exclude\r\n * @return {Node}\r\n * @private\r\n */Repo.prototype.getLatestState_=function(path,excludeSets){return this.serverSyncTree_.calcCompleteEventCache(path,excludeSets)||ChildrenNode.EMPTY_NODE;};/**\r\n * Sends any already-run transactions that aren't waiting for outstanding transactions to\r\n * complete.\r\n *\r\n * Externally it's called with no arguments, but it calls itself recursively with a particular\r\n * transactionQueueTree node to recurse through the tree.\r\n *\r\n * @param {Tree.<Array.<Transaction>>=} node  transactionQueueTree node to start at.\r\n * @private\r\n */Repo.prototype.sendReadyTransactions_=function(node){var _this=this;if(node===void 0){node=this.transactionQueueTree_;}// Before recursing, make sure any completed transactions are removed.\nif(!node){this.pruneCompletedTransactionsBelowNode_(node);}if(node.getValue()!==null){var queue=this.buildTransactionQueue_(node);util.assert(queue.length>0,'Sending zero length transaction queue');var allRun=queue.every(function(transaction){return transaction.status===TransactionStatus.RUN;});// If they're all run (and not sent), we can send them.  Else, we must wait.\nif(allRun){this.sendTransactionQueue_(node.path(),queue);}}else if(node.hasChildren()){node.forEachChild(function(childNode){_this.sendReadyTransactions_(childNode);});}};/**\r\n * Given a list of run transactions, send them to the server and then handle the result (success or failure).\r\n *\r\n * @param {!Path} path The location of the queue.\r\n * @param {!Array.<Transaction>} queue Queue of transactions under the specified location.\r\n * @private\r\n */Repo.prototype.sendTransactionQueue_=function(path,queue){var _this=this;// Mark transactions as sent and increment retry count!\nvar setsToIgnore=queue.map(function(txn){return txn.currentWriteId;});var latestState=this.getLatestState_(path,setsToIgnore);var snapToSend=latestState;var latestHash=latestState.hash();for(var i=0;i<queue.length;i++){var txn=queue[i];util.assert(txn.status===TransactionStatus.RUN,'tryToSendTransactionQueue_: items in queue should all be run.');txn.status=TransactionStatus.SENT;txn.retryCount++;var relativePath=Path.relativePath(path,txn.path);// If we've gotten to this point, the output snapshot must be defined.\nsnapToSend=snapToSend.updateChild(relativePath/**@type {!Node} */,txn.currentOutputSnapshotRaw);}var dataToSend=snapToSend.val(true);var pathToSend=path;// Send the put.\nthis.server_.put(pathToSend.toString(),dataToSend,function(status){_this.log_('transaction put response',{path:pathToSend.toString(),status:status});var events=[];if(status==='ok'){// Queue up the callbacks and fire them after cleaning up all of our transaction state, since\n// the callback could trigger more transactions or sets.\nvar callbacks=[];for(var i=0;i<queue.length;i++){queue[i].status=TransactionStatus.COMPLETED;events=events.concat(_this.serverSyncTree_.ackUserWrite(queue[i].currentWriteId));if(queue[i].onComplete){// We never unset the output snapshot, and given that this transaction is complete, it should be set\nvar node=queue[i].currentOutputSnapshotResolved;var ref=new Reference(_this,queue[i].path);var snapshot=new DataSnapshot(node,ref,PRIORITY_INDEX);callbacks.push(queue[i].onComplete.bind(null,null,true,snapshot));}queue[i].unwatcher();}// Now remove the completed transactions.\n_this.pruneCompletedTransactionsBelowNode_(_this.transactionQueueTree_.subTree(path));// There may be pending transactions that we can now send.\n_this.sendReadyTransactions_();_this.eventQueue_.raiseEventsForChangedPath(path,events);// Finally, trigger onComplete callbacks.\nfor(var i=0;i<callbacks.length;i++){exceptionGuard(callbacks[i]);}}else{// transactions are no longer sent.  Update their status appropriately.\nif(status==='datastale'){for(var i=0;i<queue.length;i++){if(queue[i].status===TransactionStatus.SENT_NEEDS_ABORT)queue[i].status=TransactionStatus.NEEDS_ABORT;else queue[i].status=TransactionStatus.RUN;}}else{warn('transaction at '+pathToSend.toString()+' failed: '+status);for(var i=0;i<queue.length;i++){queue[i].status=TransactionStatus.NEEDS_ABORT;queue[i].abortReason=status;}}_this.rerunTransactions_(path);}},latestHash);};/**\r\n * Finds all transactions dependent on the data at changedPath and reruns them.\r\n *\r\n * Should be called any time cached data changes.\r\n *\r\n * Return the highest path that was affected by rerunning transactions.  This is the path at which events need to\r\n * be raised for.\r\n *\r\n * @param {!Path} changedPath The path in mergedData that changed.\r\n * @return {!Path} The rootmost path that was affected by rerunning transactions.\r\n * @private\r\n */Repo.prototype.rerunTransactions_=function(changedPath){var rootMostTransactionNode=this.getAncestorTransactionNode_(changedPath);var path=rootMostTransactionNode.path();var queue=this.buildTransactionQueue_(rootMostTransactionNode);this.rerunTransactionQueue_(queue,path);return path;};/**\r\n * Does all the work of rerunning transactions (as well as cleans up aborted transactions and whatnot).\r\n *\r\n * @param {Array.<Transaction>} queue The queue of transactions to run.\r\n * @param {!Path} path The path the queue is for.\r\n * @private\r\n */Repo.prototype.rerunTransactionQueue_=function(queue,path){if(queue.length===0){return;// Nothing to do!\n}// Queue up the callbacks and fire them after cleaning up all of our transaction state, since\n// the callback could trigger more transactions or sets.\nvar callbacks=[];var events=[];// Ignore all of the sets we're going to re-run.\nvar txnsToRerun=queue.filter(function(q){return q.status===TransactionStatus.RUN;});var setsToIgnore=txnsToRerun.map(function(q){return q.currentWriteId;});for(var i=0;i<queue.length;i++){var transaction=queue[i];var relativePath=Path.relativePath(path,transaction.path);var abortTransaction=false,abortReason=void 0;util.assert(relativePath!==null,'rerunTransactionsUnderNode_: relativePath should not be null.');if(transaction.status===TransactionStatus.NEEDS_ABORT){abortTransaction=true;abortReason=transaction.abortReason;events=events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId,true));}else if(transaction.status===TransactionStatus.RUN){if(transaction.retryCount>=Repo.MAX_TRANSACTION_RETRIES_){abortTransaction=true;abortReason='maxretry';events=events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId,true));}else{// This code reruns a transaction\nvar currentNode=this.getLatestState_(transaction.path,setsToIgnore);transaction.currentInputSnapshot=currentNode;var newData=queue[i].update(currentNode.val());if(newData!==undefined){validateFirebaseData('transaction failed: Data returned ',newData,transaction.path);var newDataNode=nodeFromJSON$1(newData);var hasExplicitPriority=typeof newData==='object'&&newData!=null&&util.contains(newData,'.priority');if(!hasExplicitPriority){// Keep the old priority if there wasn't a priority explicitly specified.\nnewDataNode=newDataNode.updatePriority(currentNode.getPriority());}var oldWriteId=transaction.currentWriteId;var serverValues=this.generateServerValues();var newNodeResolved=resolveDeferredValueSnapshot(newDataNode,serverValues);transaction.currentOutputSnapshotRaw=newDataNode;transaction.currentOutputSnapshotResolved=newNodeResolved;transaction.currentWriteId=this.getNextWriteId_();// Mutates setsToIgnore in place\nsetsToIgnore.splice(setsToIgnore.indexOf(oldWriteId),1);events=events.concat(this.serverSyncTree_.applyUserOverwrite(transaction.path,newNodeResolved,transaction.currentWriteId,transaction.applyLocally));events=events.concat(this.serverSyncTree_.ackUserWrite(oldWriteId,true));}else{abortTransaction=true;abortReason='nodata';events=events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId,true));}}}this.eventQueue_.raiseEventsForChangedPath(path,events);events=[];if(abortTransaction){// Abort.\nqueue[i].status=TransactionStatus.COMPLETED;// Removing a listener can trigger pruning which can muck with mergedData/visibleData (as it prunes data).\n// So defer the unwatcher until we're done.\n(function(unwatcher){setTimeout(unwatcher,Math.floor(0));})(queue[i].unwatcher);if(queue[i].onComplete){if(abortReason==='nodata'){var ref=new Reference(this,queue[i].path);// We set this field immediately, so it's safe to cast to an actual snapshot\nvar lastInput/** @type {!Node} */=queue[i].currentInputSnapshot;var snapshot=new DataSnapshot(lastInput,ref,PRIORITY_INDEX);callbacks.push(queue[i].onComplete.bind(null,null,false,snapshot));}else{callbacks.push(queue[i].onComplete.bind(null,new Error(abortReason),false,null));}}}}// Clean up completed transactions.\nthis.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);// Now fire callbacks, now that we're in a good, known state.\nfor(var i=0;i<callbacks.length;i++){exceptionGuard(callbacks[i]);}// Try to send the transaction result to the server.\nthis.sendReadyTransactions_();};/**\r\n * Returns the rootmost ancestor node of the specified path that has a pending transaction on it, or just returns\r\n * the node for the given path if there are no pending transactions on any ancestor.\r\n *\r\n * @param {!Path} path The location to start at.\r\n * @return {!Tree.<Array.<!Transaction>>} The rootmost node with a transaction.\r\n * @private\r\n */Repo.prototype.getAncestorTransactionNode_=function(path){var front;// Start at the root and walk deeper into the tree towards path until we find a node with pending transactions.\nvar transactionNode=this.transactionQueueTree_;while((front=path.getFront())!==null&&transactionNode.getValue()===null){transactionNode=transactionNode.subTree(front);path=path.popFront();}return transactionNode;};/**\r\n * Builds the queue of all transactions at or below the specified transactionNode.\r\n *\r\n * @param {!Tree.<Array.<Transaction>>} transactionNode\r\n * @return {Array.<Transaction>} The generated queue.\r\n * @private\r\n */Repo.prototype.buildTransactionQueue_=function(transactionNode){// Walk any child transaction queues and aggregate them into a single queue.\nvar transactionQueue=[];this.aggregateTransactionQueuesForNode_(transactionNode,transactionQueue);// Sort them by the order the transactions were created.\ntransactionQueue.sort(function(a,b){return a.order-b.order;});return transactionQueue;};/**\r\n * @param {!Tree.<Array.<Transaction>>} node\r\n * @param {Array.<Transaction>} queue\r\n * @private\r\n */Repo.prototype.aggregateTransactionQueuesForNode_=function(node,queue){var _this=this;var nodeQueue=node.getValue();if(nodeQueue!==null){for(var i=0;i<nodeQueue.length;i++){queue.push(nodeQueue[i]);}}node.forEachChild(function(child){_this.aggregateTransactionQueuesForNode_(child,queue);});};/**\r\n * Remove COMPLETED transactions at or below this node in the transactionQueueTree_.\r\n *\r\n * @param {!Tree.<Array.<!Transaction>>} node\r\n * @private\r\n */Repo.prototype.pruneCompletedTransactionsBelowNode_=function(node){var _this=this;var queue=node.getValue();if(queue){var to=0;for(var from=0;from<queue.length;from++){if(queue[from].status!==TransactionStatus.COMPLETED){queue[to]=queue[from];to++;}}queue.length=to;node.setValue(queue.length>0?queue:null);}node.forEachChild(function(childNode){_this.pruneCompletedTransactionsBelowNode_(childNode);});};/**\r\n * Aborts all transactions on ancestors or descendants of the specified path.  Called when doing a set() or update()\r\n * since we consider them incompatible with transactions.\r\n *\r\n * @param {!Path} path Path for which we want to abort related transactions.\r\n * @return {!Path}\r\n * @private\r\n */Repo.prototype.abortTransactions_=function(path){var _this=this;var affectedPath=this.getAncestorTransactionNode_(path).path();var transactionNode=this.transactionQueueTree_.subTree(path);transactionNode.forEachAncestor(function(node){_this.abortTransactionsOnNode_(node);});this.abortTransactionsOnNode_(transactionNode);transactionNode.forEachDescendant(function(node){_this.abortTransactionsOnNode_(node);});return affectedPath;};/**\r\n * Abort transactions stored in this transaction queue node.\r\n *\r\n * @param {!Tree.<Array.<Transaction>>} node Node to abort transactions for.\r\n * @private\r\n */Repo.prototype.abortTransactionsOnNode_=function(node){var queue=node.getValue();if(queue!==null){// Queue up the callbacks and fire them after cleaning up all of our transaction state, since\n// the callback could trigger more transactions or sets.\nvar callbacks=[];// Go through queue.  Any already-sent transactions must be marked for abort, while the unsent ones\n// can be immediately aborted and removed.\nvar events=[];var lastSent=-1;for(var i=0;i<queue.length;i++){if(queue[i].status===TransactionStatus.SENT_NEEDS_ABORT);else if(queue[i].status===TransactionStatus.SENT){util.assert(lastSent===i-1,'All SENT items should be at beginning of queue.');lastSent=i;// Mark transaction for abort when it comes back.\nqueue[i].status=TransactionStatus.SENT_NEEDS_ABORT;queue[i].abortReason='set';}else{util.assert(queue[i].status===TransactionStatus.RUN,'Unexpected transaction status in abort');// We can abort it immediately.\nqueue[i].unwatcher();events=events.concat(this.serverSyncTree_.ackUserWrite(queue[i].currentWriteId,true));if(queue[i].onComplete){var snapshot=null;callbacks.push(queue[i].onComplete.bind(null,new Error('set'),false,snapshot));}}}if(lastSent===-1){// We're not waiting for any sent transactions.  We can clear the queue.\nnode.setValue(null);}else{// Remove the transactions we aborted.\nqueue.length=lastSent+1;}// Now fire the callbacks.\nthis.eventQueue_.raiseEventsForChangedPath(node.path(),events);for(var i=0;i<callbacks.length;i++){exceptionGuard(callbacks[i]);}}};/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//** @const {string} */var DATABASE_URL_OPTION='databaseURL';var _staticInstance;/**\r\n * Creates and caches Repo instances.\r\n */var RepoManager=/** @class */function(){function RepoManager(){/**\r\n         * @private {!Object.<string, Object<string, !fb.core.Repo>>}\r\n         */this.repos_={};/**\r\n         * If true, new Repos will be created to use ReadonlyRestClient (for testing purposes).\r\n         * @private {boolean}\r\n         */this.useRestClient_=false;}RepoManager.getInstance=function(){if(!_staticInstance){_staticInstance=new RepoManager();}return _staticInstance;};// TODO(koss): Remove these functions unless used in tests?\nRepoManager.prototype.interrupt=function(){for(var appName in this.repos_){for(var dbUrl in this.repos_[appName]){this.repos_[appName][dbUrl].interrupt();}}};RepoManager.prototype.resume=function(){for(var appName in this.repos_){for(var dbUrl in this.repos_[appName]){this.repos_[appName][dbUrl].resume();}}};/**\r\n     * This function should only ever be called to CREATE a new database instance.\r\n     *\r\n     * @param {!FirebaseApp} app\r\n     * @return {!Database}\r\n     */RepoManager.prototype.databaseFromApp=function(app,url){var dbUrl=url||app.options[DATABASE_URL_OPTION];if(dbUrl===undefined){fatal(\"Can't determine Firebase Database URL.  Be sure to include \"+DATABASE_URL_OPTION+' option when calling firebase.initializeApp().');}var parsedUrl=parseRepoInfo(dbUrl);var repoInfo=parsedUrl.repoInfo;validateUrl('Invalid Firebase Database URL',1,parsedUrl);if(!parsedUrl.path.isEmpty()){fatal('Database URL must point to the root of a Firebase Database '+'(not including a child path).');}var repo=this.createRepo(repoInfo,app);return repo.database;};/**\r\n     * Remove the repo and make sure it is disconnected.\r\n     *\r\n     * @param {!Repo} repo\r\n     */RepoManager.prototype.deleteRepo=function(repo){var appRepos=util.safeGet(this.repos_,repo.app.name);// This should never happen...\nif(!appRepos||util.safeGet(appRepos,repo.repoInfo_.toURLString())!==repo){fatal(\"Database \"+repo.app.name+\"(\"+repo.repoInfo_+\") has already been deleted.\");}repo.interrupt();delete appRepos[repo.repoInfo_.toURLString()];};/**\r\n     * Ensures a repo doesn't already exist and then creates one using the\r\n     * provided app.\r\n     *\r\n     * @param {!RepoInfo} repoInfo The metadata about the Repo\r\n     * @param {!FirebaseApp} app\r\n     * @return {!Repo} The Repo object for the specified server / repoName.\r\n     */RepoManager.prototype.createRepo=function(repoInfo,app){var appRepos=util.safeGet(this.repos_,app.name);if(!appRepos){appRepos={};this.repos_[app.name]=appRepos;}var repo=util.safeGet(appRepos,repoInfo.toURLString());if(repo){fatal('Database initialized multiple times. Please make sure the format of the database URL matches with each database() call.');}repo=new Repo(repoInfo,this.useRestClient_,app);appRepos[repoInfo.toURLString()]=repo;return repo;};/**\r\n     * Forces us to use ReadonlyRestClient instead of PersistentConnection for new Repos.\r\n     * @param {boolean} forceRestClient\r\n     */RepoManager.prototype.forceRestClient=function(forceRestClient){this.useRestClient_=forceRestClient;};return RepoManager;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * Class representing a firebase database.\r\n * @implements {FirebaseService}\r\n */var Database=/** @class */function(){/**\r\n     * The constructor should not be called by users of our public API.\r\n     * @param {!Repo} repo_\r\n     */function Database(repo_){this.repo_=repo_;if(!(repo_ instanceof Repo)){fatal(\"Don't call new Database() directly - please use firebase.database().\");}/** @type {Reference} */this.root_=new Reference(repo_,Path.Empty);this.INTERNAL=new DatabaseInternals(this);}Object.defineProperty(Database.prototype,\"app\",{get:function get(){return this.repo_.app;},enumerable:true,configurable:true});Database.prototype.ref=function(path){this.checkDeleted_('ref');util.validateArgCount('database.ref',0,1,arguments.length);if(path instanceof Reference){return this.refFromURL(path.toString());}return path!==undefined?this.root_.child(path):this.root_;};/**\r\n     * Returns a reference to the root or the path specified in url.\r\n     * We throw a exception if the url is not in the same domain as the\r\n     * current repo.\r\n     * @param {string} url\r\n     * @return {!Reference} Firebase reference.\r\n     */Database.prototype.refFromURL=function(url){/** @const {string} */var apiName='database.refFromURL';this.checkDeleted_(apiName);util.validateArgCount(apiName,1,1,arguments.length);var parsedURL=parseRepoInfo(url);validateUrl(apiName,1,parsedURL);var repoInfo=parsedURL.repoInfo;if(repoInfo.host!==this.repo_.repoInfo_.host){fatal(apiName+': Host name does not match the current database: '+'(found '+repoInfo.host+' but expected '+this.repo_.repoInfo_.host+')');}return this.ref(parsedURL.path.toString());};/**\r\n     * @param {string} apiName\r\n     */Database.prototype.checkDeleted_=function(apiName){if(this.repo_===null){fatal('Cannot call '+apiName+' on a deleted database.');}};// Make individual repo go offline.\nDatabase.prototype.goOffline=function(){util.validateArgCount('database.goOffline',0,0,arguments.length);this.checkDeleted_('goOffline');this.repo_.interrupt();};Database.prototype.goOnline=function(){util.validateArgCount('database.goOnline',0,0,arguments.length);this.checkDeleted_('goOnline');this.repo_.resume();};Database.ServerValue={TIMESTAMP:{'.sv':'timestamp'}};return Database;}();var DatabaseInternals=/** @class */function(){/** @param {!Database} database */function DatabaseInternals(database){this.database=database;}/** @return {Promise<void>} */DatabaseInternals.prototype.delete=function(){return tslib_1.__awaiter(this,void 0,void 0,function(){return tslib_1.__generator(this,function(_a){this.database.checkDeleted_('delete');RepoManager.getInstance().deleteRepo(this.database.repo_);this.database.repo_=null;this.database.root_=null;this.database.INTERNAL=null;this.database=null;return[2/*return*/];});});};return DatabaseInternals;}();/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n *//**\r\n * INTERNAL methods for internal-use only (tests, etc.).\r\n *\r\n * Customers shouldn't use these or else should be aware that they could break at any time.\r\n *\r\n * @const\r\n */var forceLongPolling=function forceLongPolling(){WebSocketConnection.forceDisallow();BrowserPollConnection.forceAllow();};var forceWebSockets=function forceWebSockets(){BrowserPollConnection.forceDisallow();};/* Used by App Manager */var isWebSocketsAvailable=function isWebSocketsAvailable(){return WebSocketConnection['isAvailable']();};var setSecurityDebugCallback=function setSecurityDebugCallback(ref,callback){ref.repo.persistentConnection_.securityDebugCallback_=callback;};var stats=function stats(ref,showDelta){ref.repo.stats(showDelta);};var statsIncrementCounter=function statsIncrementCounter(ref,metric){ref.repo.statsIncrementCounter(metric);};var dataUpdateCount=function dataUpdateCount(ref){return ref.repo.dataUpdateCount;};var interceptServerData=function interceptServerData(ref,callback){return ref.repo.interceptServerData_(callback);};var INTERNAL=/*#__PURE__*/Object.freeze({forceLongPolling:forceLongPolling,forceWebSockets:forceWebSockets,isWebSocketsAvailable:isWebSocketsAvailable,setSecurityDebugCallback:setSecurityDebugCallback,stats:stats,statsIncrementCounter:statsIncrementCounter,dataUpdateCount:dataUpdateCount,interceptServerData:interceptServerData});/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var DataConnection=PersistentConnection;/**\r\n * @param {!string} pathString\r\n * @param {function(*)} onComplete\r\n */PersistentConnection.prototype.simpleListen=function(pathString,onComplete){this.sendRequest('q',{p:pathString},onComplete);};/**\r\n * @param {*} data\r\n * @param {function(*)} onEcho\r\n */PersistentConnection.prototype.echo=function(data,onEcho){this.sendRequest('echo',{d:data},onEcho);};// RealTimeConnection properties that we use in tests.\nvar RealTimeConnection=Connection;/**\r\n * @param {function(): string} newHash\r\n * @return {function()}\r\n */var hijackHash=function hijackHash(newHash){var oldPut=PersistentConnection.prototype.put;PersistentConnection.prototype.put=function(pathString,data,opt_onComplete,opt_hash){if(opt_hash!==undefined){opt_hash=newHash();}oldPut.call(this,pathString,data,opt_onComplete,opt_hash);};return function(){PersistentConnection.prototype.put=oldPut;};};/**\r\n * @type {function(new:RepoInfo, !string, boolean, !string, boolean): undefined}\r\n */var ConnectionTarget=RepoInfo;/**\r\n * @param {!Query} query\r\n * @return {!string}\r\n */var queryIdentifier=function queryIdentifier(query){return query.queryIdentifier();};/**\r\n * @param {!Query} firebaseRef\r\n * @return {!Object}\r\n */var listens=function listens(firebaseRef){return firebaseRef.repo.persistentConnection_.listens_;};/**\r\n * Forces the RepoManager to create Repos that use ReadonlyRestClient instead of PersistentConnection.\r\n *\r\n * @param {boolean} forceRestClient\r\n */var forceRestClient=function forceRestClient(_forceRestClient){RepoManager.getInstance().forceRestClient(_forceRestClient);};var TEST_ACCESS=/*#__PURE__*/Object.freeze({DataConnection:DataConnection,RealTimeConnection:RealTimeConnection,hijackHash:hijackHash,ConnectionTarget:ConnectionTarget,queryIdentifier:queryIdentifier,listens:listens,forceRestClient:forceRestClient});/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */var ServerValue=Database.ServerValue;function registerDatabase(instance){// Register the Database Service with the 'firebase' namespace.\nvar namespace=instance.INTERNAL.registerService('database',function(app,unused,url){return RepoManager.getInstance().databaseFromApp(app,url);},// firebase.database namespace properties\n{Reference:Reference,Query:Query,Database:Database,enableLogging:enableLogging,INTERNAL:INTERNAL,ServerValue:ServerValue,TEST_ACCESS:TEST_ACCESS},null,true);if(util.isNodeSdk()){module.exports=namespace;}}registerDatabase(firebase);exports.registerDatabase=registerDatabase;exports.Database=Database;exports.Query=Query;exports.Reference=Reference;exports.enableLogging=enableLogging;exports.ServerValue=ServerValue;exports.DataSnapshot=DataSnapshot;exports.OnDisconnect=OnDisconnect;\n\n/***/ }),\n\n/***/ \"31jC\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar document = __webpack_require__(\"l7GE\").document;\nmodule.exports = document && document.documentElement;\n\n/***/ }),\n\n/***/ \"3FfE\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar addToUnscopables = __webpack_require__(\"foUn\");\nvar step = __webpack_require__(\"Nsnf\");\nvar Iterators = __webpack_require__(\"CHE6\");\nvar toIObject = __webpack_require__(\"SFi4\");\n\n// 22.1.3.4 Array.prototype.entries()\n// 22.1.3.13 Array.prototype.keys()\n// 22.1.3.29 Array.prototype.values()\n// 22.1.3.30 Array.prototype[@@iterator]()\nmodule.exports = __webpack_require__(\"CiFW\")(Array, 'Array', function (iterated, kind) {\n  this._t = toIObject(iterated); // target\n  this._i = 0; // next index\n  this._k = kind; // kind\n  // 22.1.5.2.1 %ArrayIteratorPrototype%.next()\n}, function () {\n  var O = this._t;\n  var kind = this._k;\n  var index = this._i++;\n  if (!O || index >= O.length) {\n    this._t = undefined;\n    return step(1);\n  }\n  if (kind == 'keys') return step(0, index);\n  if (kind == 'values') return step(0, O[index]);\n  return step(0, [index, O[index]]);\n}, 'values');\n\n// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)\nIterators.Arguments = Iterators.Array;\n\naddToUnscopables('keys');\naddToUnscopables('values');\naddToUnscopables('entries');\n\n/***/ }),\n\n/***/ \"4Tmy\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n// 22.1.3.8 Array.prototype.find(predicate, thisArg = undefined)\n\nvar $export = __webpack_require__(\"Rhd1\");\nvar $find = __webpack_require__(\"VBtO\")(5);\nvar KEY = 'find';\nvar forced = true;\n// Shouldn't skip holes\nif (KEY in []) Array(1)[KEY](function () {\n  forced = false;\n});\n$export($export.P + $export.F * forced, 'Array', {\n  find: function find(callbackfn /* , that = undefined */) {\n    return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n  }\n});\n__webpack_require__(\"foUn\")(KEY);\n\n/***/ }),\n\n/***/ \"4i3n\":\n/***/ (function(module, exports) {\n\nvar toString = {}.toString;\n\nmodule.exports = function (it) {\n  return toString.call(it).slice(8, -1);\n};\n\n/***/ }),\n\n/***/ \"5/Vk\":\n/***/ (function(module, exports, __webpack_require__) {\n\nexports.f = __webpack_require__(\"Teay\");\n\n/***/ }),\n\n/***/ \"58xA\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nvar tslib_1 = __webpack_require__(\"rjHE\");\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @fileoverview Firebase constants.  Some of these (@defines) can be overridden at compile-time.\r\n */\nvar CONSTANTS = {\n    /**\r\n     * @define {boolean} Whether this is the client Node.js SDK.\r\n     */\n    NODE_CLIENT: false,\n    /**\r\n     * @define {boolean} Whether this is the Admin Node.js SDK.\r\n     */\n    NODE_ADMIN: false,\n    /**\r\n     * Firebase SDK Version\r\n     */\n    SDK_VERSION: '${JSCORE_VERSION}'\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Throws an error if the provided assertion is falsy\r\n * @param {*} assertion The assertion to be tested for falsiness\r\n * @param {!string} message The message to display if the check fails\r\n */\nvar assert = function assert(assertion, message) {\n    if (!assertion) {\n        throw assertionError(message);\n    }\n};\n/**\r\n * Returns an Error object suitable for throwing.\r\n * @param {string} message\r\n * @return {!Error}\r\n */\nvar assertionError = function assertionError(message) {\n    return new Error('Firebase Database (' + CONSTANTS.SDK_VERSION + ') INTERNAL ASSERT FAILED: ' + message);\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nvar stringToByteArray = function stringToByteArray(str) {\n    // TODO(user): Use native implementations if/when available\n    var out = [],\n        p = 0;\n    for (var i = 0; i < str.length; i++) {\n        var c = str.charCodeAt(i);\n        if (c < 128) {\n            out[p++] = c;\n        } else if (c < 2048) {\n            out[p++] = c >> 6 | 192;\n            out[p++] = c & 63 | 128;\n        } else if ((c & 0xfc00) == 0xd800 && i + 1 < str.length && (str.charCodeAt(i + 1) & 0xfc00) == 0xdc00) {\n            // Surrogate Pair\n            c = 0x10000 + ((c & 0x03ff) << 10) + (str.charCodeAt(++i) & 0x03ff);\n            out[p++] = c >> 18 | 240;\n            out[p++] = c >> 12 & 63 | 128;\n            out[p++] = c >> 6 & 63 | 128;\n            out[p++] = c & 63 | 128;\n        } else {\n            out[p++] = c >> 12 | 224;\n            out[p++] = c >> 6 & 63 | 128;\n            out[p++] = c & 63 | 128;\n        }\n    }\n    return out;\n};\n/**\r\n * Turns an array of numbers into the string given by the concatenation of the\r\n * characters to which the numbers correspond.\r\n * @param {Array<number>} bytes Array of numbers representing characters.\r\n * @return {string} Stringification of the array.\r\n */\nvar byteArrayToString = function byteArrayToString(bytes) {\n    // TODO(user): Use native implementations if/when available\n    var out = [],\n        pos = 0,\n        c = 0;\n    while (pos < bytes.length) {\n        var c1 = bytes[pos++];\n        if (c1 < 128) {\n            out[c++] = String.fromCharCode(c1);\n        } else if (c1 > 191 && c1 < 224) {\n            var c2 = bytes[pos++];\n            out[c++] = String.fromCharCode((c1 & 31) << 6 | c2 & 63);\n        } else if (c1 > 239 && c1 < 365) {\n            // Surrogate Pair\n            var c2 = bytes[pos++];\n            var c3 = bytes[pos++];\n            var c4 = bytes[pos++];\n            var u = ((c1 & 7) << 18 | (c2 & 63) << 12 | (c3 & 63) << 6 | c4 & 63) - 0x10000;\n            out[c++] = String.fromCharCode(0xd800 + (u >> 10));\n            out[c++] = String.fromCharCode(0xdc00 + (u & 1023));\n        } else {\n            var c2 = bytes[pos++];\n            var c3 = bytes[pos++];\n            out[c++] = String.fromCharCode((c1 & 15) << 12 | (c2 & 63) << 6 | c3 & 63);\n        }\n    }\n    return out.join('');\n};\n// Static lookup maps, lazily populated by init_()\nvar base64 = {\n    /**\r\n     * Maps bytes to characters.\r\n     * @type {Object}\r\n     * @private\r\n     */\n    byteToCharMap_: null,\n    /**\r\n     * Maps characters to bytes.\r\n     * @type {Object}\r\n     * @private\r\n     */\n    charToByteMap_: null,\n    /**\r\n     * Maps bytes to websafe characters.\r\n     * @type {Object}\r\n     * @private\r\n     */\n    byteToCharMapWebSafe_: null,\n    /**\r\n     * Maps websafe characters to bytes.\r\n     * @type {Object}\r\n     * @private\r\n     */\n    charToByteMapWebSafe_: null,\n    /**\r\n     * Our default alphabet, shared between\r\n     * ENCODED_VALS and ENCODED_VALS_WEBSAFE\r\n     * @type {string}\r\n     */\n    ENCODED_VALS_BASE: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789',\n    /**\r\n     * Our default alphabet. Value 64 (=) is special; it means \"nothing.\"\r\n     * @type {string}\r\n     */\n    get ENCODED_VALS() {\n        return this.ENCODED_VALS_BASE + '+/=';\n    },\n    /**\r\n     * Our websafe alphabet.\r\n     * @type {string}\r\n     */\n    get ENCODED_VALS_WEBSAFE() {\n        return this.ENCODED_VALS_BASE + '-_.';\n    },\n    /**\r\n     * Whether this browser supports the atob and btoa functions. This extension\r\n     * started at Mozilla but is now implemented by many browsers. We use the\r\n     * ASSUME_* variables to avoid pulling in the full useragent detection library\r\n     * but still allowing the standard per-browser compilations.\r\n     *\r\n     * @type {boolean}\r\n     */\n    HAS_NATIVE_SUPPORT: typeof atob === 'function',\n    /**\r\n     * Base64-encode an array of bytes.\r\n     *\r\n     * @param {Array<number>|Uint8Array} input An array of bytes (numbers with\r\n     *     value in [0, 255]) to encode.\r\n     * @param {boolean=} opt_webSafe Boolean indicating we should use the\r\n     *     alternative alphabet.\r\n     * @return {string} The base64 encoded string.\r\n     */\n    encodeByteArray: function encodeByteArray(input, opt_webSafe) {\n        if (!Array.isArray(input)) {\n            throw Error('encodeByteArray takes an array as a parameter');\n        }\n        this.init_();\n        var byteToCharMap = opt_webSafe ? this.byteToCharMapWebSafe_ : this.byteToCharMap_;\n        var output = [];\n        for (var i = 0; i < input.length; i += 3) {\n            var byte1 = input[i];\n            var haveByte2 = i + 1 < input.length;\n            var byte2 = haveByte2 ? input[i + 1] : 0;\n            var haveByte3 = i + 2 < input.length;\n            var byte3 = haveByte3 ? input[i + 2] : 0;\n            var outByte1 = byte1 >> 2;\n            var outByte2 = (byte1 & 0x03) << 4 | byte2 >> 4;\n            var outByte3 = (byte2 & 0x0f) << 2 | byte3 >> 6;\n            var outByte4 = byte3 & 0x3f;\n            if (!haveByte3) {\n                outByte4 = 64;\n                if (!haveByte2) {\n                    outByte3 = 64;\n                }\n            }\n            output.push(byteToCharMap[outByte1], byteToCharMap[outByte2], byteToCharMap[outByte3], byteToCharMap[outByte4]);\n        }\n        return output.join('');\n    },\n    /**\r\n     * Base64-encode a string.\r\n     *\r\n     * @param {string} input A string to encode.\r\n     * @param {boolean=} opt_webSafe If true, we should use the\r\n     *     alternative alphabet.\r\n     * @return {string} The base64 encoded string.\r\n     */\n    encodeString: function encodeString(input, opt_webSafe) {\n        // Shortcut for Mozilla browsers that implement\n        // a native base64 encoder in the form of \"btoa/atob\"\n        if (this.HAS_NATIVE_SUPPORT && !opt_webSafe) {\n            return btoa(input);\n        }\n        return this.encodeByteArray(stringToByteArray(input), opt_webSafe);\n    },\n    /**\r\n     * Base64-decode a string.\r\n     *\r\n     * @param {string} input to decode.\r\n     * @param {boolean=} opt_webSafe True if we should use the\r\n     *     alternative alphabet.\r\n     * @return {string} string representing the decoded value.\r\n     */\n    decodeString: function decodeString(input, opt_webSafe) {\n        // Shortcut for Mozilla browsers that implement\n        // a native base64 encoder in the form of \"btoa/atob\"\n        if (this.HAS_NATIVE_SUPPORT && !opt_webSafe) {\n            return atob(input);\n        }\n        return byteArrayToString(this.decodeStringToByteArray(input, opt_webSafe));\n    },\n    /**\r\n     * Base64-decode a string.\r\n     *\r\n     * In base-64 decoding, groups of four characters are converted into three\r\n     * bytes.  If the encoder did not apply padding, the input length may not\r\n     * be a multiple of 4.\r\n     *\r\n     * In this case, the last group will have fewer than 4 characters, and\r\n     * padding will be inferred.  If the group has one or two characters, it decodes\r\n     * to one byte.  If the group has three characters, it decodes to two bytes.\r\n     *\r\n     * @param {string} input Input to decode.\r\n     * @param {boolean=} opt_webSafe True if we should use the web-safe alphabet.\r\n     * @return {!Array<number>} bytes representing the decoded value.\r\n     */\n    decodeStringToByteArray: function decodeStringToByteArray(input, opt_webSafe) {\n        this.init_();\n        var charToByteMap = opt_webSafe ? this.charToByteMapWebSafe_ : this.charToByteMap_;\n        var output = [];\n        for (var i = 0; i < input.length;) {\n            var byte1 = charToByteMap[input.charAt(i++)];\n            var haveByte2 = i < input.length;\n            var byte2 = haveByte2 ? charToByteMap[input.charAt(i)] : 0;\n            ++i;\n            var haveByte3 = i < input.length;\n            var byte3 = haveByte3 ? charToByteMap[input.charAt(i)] : 64;\n            ++i;\n            var haveByte4 = i < input.length;\n            var byte4 = haveByte4 ? charToByteMap[input.charAt(i)] : 64;\n            ++i;\n            if (byte1 == null || byte2 == null || byte3 == null || byte4 == null) {\n                throw Error();\n            }\n            var outByte1 = byte1 << 2 | byte2 >> 4;\n            output.push(outByte1);\n            if (byte3 != 64) {\n                var outByte2 = byte2 << 4 & 0xf0 | byte3 >> 2;\n                output.push(outByte2);\n                if (byte4 != 64) {\n                    var outByte3 = byte3 << 6 & 0xc0 | byte4;\n                    output.push(outByte3);\n                }\n            }\n        }\n        return output;\n    },\n    /**\r\n     * Lazy static initialization function. Called before\r\n     * accessing any of the static map variables.\r\n     * @private\r\n     */\n    init_: function init_() {\n        if (!this.byteToCharMap_) {\n            this.byteToCharMap_ = {};\n            this.charToByteMap_ = {};\n            this.byteToCharMapWebSafe_ = {};\n            this.charToByteMapWebSafe_ = {};\n            // We want quick mappings back and forth, so we precompute two maps.\n            for (var i = 0; i < this.ENCODED_VALS.length; i++) {\n                this.byteToCharMap_[i] = this.ENCODED_VALS.charAt(i);\n                this.charToByteMap_[this.byteToCharMap_[i]] = i;\n                this.byteToCharMapWebSafe_[i] = this.ENCODED_VALS_WEBSAFE.charAt(i);\n                this.charToByteMapWebSafe_[this.byteToCharMapWebSafe_[i]] = i;\n                // Be forgiving when decoding and correctly decode both encodings.\n                if (i >= this.ENCODED_VALS_BASE.length) {\n                    this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(i)] = i;\n                    this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(i)] = i;\n                }\n            }\n        }\n    }\n};\n/**\r\n * URL-safe base64 encoding\r\n * @param {!string} str\r\n * @return {!string}\r\n */\nvar base64Encode = function base64Encode(str) {\n    var utf8Bytes = stringToByteArray(str);\n    return base64.encodeByteArray(utf8Bytes, true);\n};\n/**\r\n * URL-safe base64 decoding\r\n *\r\n * NOTE: DO NOT use the global atob() function - it does NOT support the\r\n * base64Url variant encoding.\r\n *\r\n * @param {string} str To be decoded\r\n * @return {?string} Decoded result, if possible\r\n */\nvar base64Decode = function base64Decode(str) {\n    try {\n        return base64.decodeString(str, true);\n    } catch (e) {\n        console.error('base64Decode failed: ', e);\n    }\n    return null;\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Do a deep-copy of basic JavaScript Objects or Arrays.\r\n */\nfunction deepCopy(value) {\n    return deepExtend(undefined, value);\n}\n/**\r\n * Copy properties from source to target (recursively allows extension\r\n * of Objects and Arrays).  Scalar values in the target are over-written.\r\n * If target is undefined, an object of the appropriate type will be created\r\n * (and returned).\r\n *\r\n * We recursively copy all child properties of plain Objects in the source- so\r\n * that namespace- like dictionaries are merged.\r\n *\r\n * Note that the target can be a function, in which case the properties in\r\n * the source Object are copied onto it as static properties of the Function.\r\n */\nfunction deepExtend(target, source) {\n    if (!(source instanceof Object)) {\n        return source;\n    }\n    switch (source.constructor) {\n        case Date:\n            // Treat Dates like scalars; if the target date object had any child\n            // properties - they will be lost!\n            var dateValue = source;\n            return new Date(dateValue.getTime());\n        case Object:\n            if (target === undefined) {\n                target = {};\n            }\n            break;\n        case Array:\n            // Always copy the array source and overwrite the target.\n            target = [];\n            break;\n        default:\n            // Not a plain Object - treat it as a scalar.\n            return source;\n    }\n    for (var prop in source) {\n        if (!source.hasOwnProperty(prop)) {\n            continue;\n        }\n        target[prop] = deepExtend(target[prop], source[prop]);\n    }\n    return target;\n}\n// TODO: Really needed (for JSCompiler type checking)?\nfunction patchProperty(obj, prop, value) {\n    obj[prop] = value;\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nvar Deferred = /** @class */function () {\n    function Deferred() {\n        var _this = this;\n        this.promise = new Promise(function (resolve, reject) {\n            _this.resolve = resolve;\n            _this.reject = reject;\n        });\n    }\n    /**\r\n     * Our API internals are not promiseified and cannot because our callback APIs have subtle expectations around\r\n     * invoking promises inline, which Promises are forbidden to do. This method accepts an optional node-style callback\r\n     * and returns a node-style callback which will resolve or reject the Deferred's promise.\r\n     * @param {((?function(?(Error)): (?|undefined))| (?function(?(Error),?=): (?|undefined)))=} callback\r\n     * @return {!function(?(Error), ?=)}\r\n     */\n    Deferred.prototype.wrapCallback = function (callback) {\n        var _this = this;\n        return function (error, value) {\n            if (error) {\n                _this.reject(error);\n            } else {\n                _this.resolve(value);\n            }\n            if (typeof callback === 'function') {\n                // Attaching noop handler just in case developer wasn't expecting\n                // promises\n                _this.promise.catch(function () {});\n                // Some of our callbacks don't expect a value and our own tests\n                // assert that the parameter length is 1\n                if (callback.length === 1) {\n                    callback(error);\n                } else {\n                    callback(error, value);\n                }\n            }\n        };\n    };\n    return Deferred;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Returns navigator.userAgent string or '' if it's not defined.\r\n * @return {string} user agent string\r\n */\nvar getUA = function getUA() {\n    if (typeof navigator !== 'undefined' && typeof navigator['userAgent'] === 'string') {\n        return navigator['userAgent'];\n    } else {\n        return '';\n    }\n};\n/**\r\n * Detect Cordova / PhoneGap / Ionic frameworks on a mobile device.\r\n *\r\n * Deliberately does not rely on checking `file://` URLs (as this fails PhoneGap in the Ripple emulator) nor\r\n * Cordova `onDeviceReady`, which would normally wait for a callback.\r\n *\r\n * @return {boolean} isMobileCordova\r\n */\nvar isMobileCordova = function isMobileCordova() {\n    return typeof window !== 'undefined' && !!(window['cordova'] || window['phonegap'] || window['PhoneGap']) && /ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test(getUA());\n};\n/**\r\n * Detect React Native.\r\n *\r\n * @return {boolean} True if ReactNative environment is detected.\r\n */\nvar isReactNative = function isReactNative() {\n    return typeof navigator === 'object' && navigator['product'] === 'ReactNative';\n};\n/**\r\n * Detect Node.js.\r\n *\r\n * @return {boolean} True if Node.js environment is detected.\r\n */\nvar isNodeSdk = function isNodeSdk() {\n    return CONSTANTS.NODE_CLIENT === true || CONSTANTS.NODE_ADMIN === true;\n};\n\nvar ERROR_NAME = 'FirebaseError';\nvar captureStackTrace = Error.captureStackTrace;\n// Export for faking in tests\nfunction patchCapture(captureFake) {\n    var result = captureStackTrace;\n    captureStackTrace = captureFake;\n    return result;\n}\nvar FirebaseError = /** @class */function () {\n    function FirebaseError(code, message) {\n        this.code = code;\n        this.message = message;\n        // We want the stack value, if implemented by Error\n        if (captureStackTrace) {\n            // Patches this.stack, omitted calls above ErrorFactory#create\n            captureStackTrace(this, ErrorFactory.prototype.create);\n        } else {\n            try {\n                // In case of IE11, stack will be set only after error is raised.\n                // https://docs.microsoft.com/en-us/scripting/javascript/reference/stack-property-error-javascript\n                throw Error.apply(this, arguments);\n            } catch (err) {\n                this.name = ERROR_NAME;\n                // Make non-enumerable getter for the property.\n                Object.defineProperty(this, 'stack', {\n                    get: function get() {\n                        return err.stack;\n                    }\n                });\n            }\n        }\n    }\n    return FirebaseError;\n}();\n// Back-door inheritance\nFirebaseError.prototype = Object.create(Error.prototype);\nFirebaseError.prototype.constructor = FirebaseError;\nFirebaseError.prototype.name = ERROR_NAME;\nvar ErrorFactory = /** @class */function () {\n    function ErrorFactory(service, serviceName, errors) {\n        this.service = service;\n        this.serviceName = serviceName;\n        this.errors = errors;\n        // Matches {$name}, by default.\n        this.pattern = /\\{\\$([^}]+)}/g;\n        // empty\n    }\n    ErrorFactory.prototype.create = function (code, data) {\n        if (data === undefined) {\n            data = {};\n        }\n        var template = this.errors[code];\n        var fullCode = this.service + '/' + code;\n        var message;\n        if (template === undefined) {\n            message = 'Error';\n        } else {\n            message = template.replace(this.pattern, function (match, key) {\n                var value = data[key];\n                return value !== undefined ? value.toString() : '<' + key + '?>';\n            });\n        }\n        // Service: Error message (service/code).\n        message = this.serviceName + ': ' + message + ' (' + fullCode + ').';\n        var err = new FirebaseError(fullCode, message);\n        // Populate the Error object with message parts for programmatic\n        // accesses (e.g., e.file).\n        for (var prop in data) {\n            if (!data.hasOwnProperty(prop) || prop.slice(-1) === '_') {\n                continue;\n            }\n            err[prop] = data[prop];\n        }\n        return err;\n    };\n    return ErrorFactory;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Evaluates a JSON string into a javascript object.\r\n *\r\n * @param {string} str A string containing JSON.\r\n * @return {*} The javascript object representing the specified JSON.\r\n */\nfunction jsonEval(str) {\n    return JSON.parse(str);\n}\n/**\r\n * Returns JSON representing a javascript object.\r\n * @param {*} data Javascript object to be stringified.\r\n * @return {string} The JSON contents of the object.\r\n */\nfunction stringify(data) {\n    return JSON.stringify(data);\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Decodes a Firebase auth. token into constituent parts.\r\n *\r\n * Notes:\r\n * - May return with invalid / incomplete claims if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {{header: *, claims: *, data: *, signature: string}}\r\n */\nvar decode = function decode(token) {\n    var header = {},\n        claims = {},\n        data = {},\n        signature = '';\n    try {\n        var parts = token.split('.');\n        header = jsonEval(base64Decode(parts[0]) || '');\n        claims = jsonEval(base64Decode(parts[1]) || '');\n        signature = parts[2];\n        data = claims['d'] || {};\n        delete claims['d'];\n    } catch (e) {}\n    return {\n        header: header,\n        claims: claims,\n        data: data,\n        signature: signature\n    };\n};\n/**\r\n * Decodes a Firebase auth. token and checks the validity of its time-based claims. Will return true if the\r\n * token is within the time window authorized by the 'nbf' (not-before) and 'iat' (issued-at) claims.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {boolean}\r\n */\nvar isValidTimestamp = function isValidTimestamp(token) {\n    var claims = decode(token).claims,\n        now = Math.floor(new Date().getTime() / 1000),\n        validSince,\n        validUntil;\n    if (typeof claims === 'object') {\n        if (claims.hasOwnProperty('nbf')) {\n            validSince = claims['nbf'];\n        } else if (claims.hasOwnProperty('iat')) {\n            validSince = claims['iat'];\n        }\n        if (claims.hasOwnProperty('exp')) {\n            validUntil = claims['exp'];\n        } else {\n            // token will expire after 24h by default\n            validUntil = validSince + 86400;\n        }\n    }\n    return now && validSince && validUntil && now >= validSince && now <= validUntil;\n};\n/**\r\n * Decodes a Firebase auth. token and returns its issued at time if valid, null otherwise.\r\n *\r\n * Notes:\r\n * - May return null if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {?number}\r\n */\nvar issuedAtTime = function issuedAtTime(token) {\n    var claims = decode(token).claims;\n    if (typeof claims === 'object' && claims.hasOwnProperty('iat')) {\n        return claims['iat'];\n    }\n    return null;\n};\n/**\r\n * Decodes a Firebase auth. token and checks the validity of its format. Expects a valid issued-at time.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {boolean}\r\n */\nvar isValidFormat = function isValidFormat(token) {\n    var decoded = decode(token),\n        claims = decoded.claims;\n    return !!claims && typeof claims === 'object' && claims.hasOwnProperty('iat');\n};\n/**\r\n * Attempts to peer into an auth token and determine if it's an admin auth token by looking at the claims portion.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {boolean}\r\n */\nvar isAdmin = function isAdmin(token) {\n    var claims = decode(token).claims;\n    return typeof claims === 'object' && claims['admin'] === true;\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n// See http://www.devthought.com/2012/01/18/an-object-is-not-a-hash/\nvar contains = function contains(obj, key) {\n    return Object.prototype.hasOwnProperty.call(obj, key);\n};\nvar safeGet = function safeGet(obj, key) {\n    if (Object.prototype.hasOwnProperty.call(obj, key)) return obj[key];\n    // else return undefined.\n};\n/**\r\n * Enumerates the keys/values in an object, excluding keys defined on the prototype.\r\n *\r\n * @param {?Object.<K,V>} obj Object to enumerate.\r\n * @param {!function(K, V)} fn Function to call for each key and value.\r\n * @template K,V\r\n */\nvar forEach = function forEach(obj, fn) {\n    for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n            fn(key, obj[key]);\n        }\n    }\n};\n/**\r\n * Copies all the (own) properties from one object to another.\r\n * @param {!Object} objTo\r\n * @param {!Object} objFrom\r\n * @return {!Object} objTo\r\n */\nvar extend = function extend(objTo, objFrom) {\n    forEach(objFrom, function (key, value) {\n        objTo[key] = value;\n    });\n    return objTo;\n};\n/**\r\n * Returns a clone of the specified object.\r\n * @param {!Object} obj\r\n * @return {!Object} cloned obj.\r\n */\nvar clone = function clone(obj) {\n    return extend({}, obj);\n};\n/**\r\n * Returns true if obj has typeof \"object\" and is not null.  Unlike goog.isObject(), does not return true\r\n * for functions.\r\n *\r\n * @param obj {*} A potential object.\r\n * @returns {boolean} True if it's an object.\r\n */\nvar isNonNullObject = function isNonNullObject(obj) {\n    return typeof obj === 'object' && obj !== null;\n};\nvar isEmpty = function isEmpty(obj) {\n    for (var key in obj) {\n        return false;\n    }\n    return true;\n};\nvar getCount = function getCount(obj) {\n    var rv = 0;\n    for (var key in obj) {\n        rv++;\n    }\n    return rv;\n};\nvar map = function map(obj, f, opt_obj) {\n    var res = {};\n    for (var key in obj) {\n        res[key] = f.call(opt_obj, obj[key], key, obj);\n    }\n    return res;\n};\nvar findKey = function findKey(obj, fn, opt_this) {\n    for (var key in obj) {\n        if (fn.call(opt_this, obj[key], key, obj)) {\n            return key;\n        }\n    }\n    return undefined;\n};\nvar findValue = function findValue(obj, fn, opt_this) {\n    var key = findKey(obj, fn, opt_this);\n    return key && obj[key];\n};\nvar getAnyKey = function getAnyKey(obj) {\n    for (var key in obj) {\n        return key;\n    }\n};\nvar getValues = function getValues(obj) {\n    var res = [];\n    var i = 0;\n    for (var key in obj) {\n        res[i++] = obj[key];\n    }\n    return res;\n};\n/**\r\n * Tests whether every key/value pair in an object pass the test implemented\r\n * by the provided function\r\n *\r\n * @param {?Object.<K,V>} obj Object to test.\r\n * @param {!function(K, V)} fn Function to call for each key and value.\r\n * @template K,V\r\n */\nvar every = function every(obj, fn) {\n    for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n            if (!fn(key, obj[key])) {\n                return false;\n            }\n        }\n    }\n    return true;\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Returns a querystring-formatted string (e.g. &arg=val&arg2=val2) from a params\r\n * object (e.g. {arg: 'val', arg2: 'val2'})\r\n * Note: You must prepend it with ? when adding it to a URL.\r\n *\r\n * @param {!Object} querystringParams\r\n * @return {string}\r\n */\nvar querystring = function querystring(querystringParams) {\n    var params = [];\n    forEach(querystringParams, function (key, value) {\n        if (Array.isArray(value)) {\n            value.forEach(function (arrayVal) {\n                params.push(encodeURIComponent(key) + '=' + encodeURIComponent(arrayVal));\n            });\n        } else {\n            params.push(encodeURIComponent(key) + '=' + encodeURIComponent(value));\n        }\n    });\n    return params.length ? '&' + params.join('&') : '';\n};\n/**\r\n * Decodes a querystring (e.g. ?arg=val&arg2=val2) into a params object (e.g. {arg: 'val', arg2: 'val2'})\r\n *\r\n * @param {string} querystring\r\n * @return {!Object}\r\n */\nvar querystringDecode = function querystringDecode(querystring) {\n    var obj = {};\n    var tokens = querystring.replace(/^\\?/, '').split('&');\n    tokens.forEach(function (token) {\n        if (token) {\n            var key = token.split('=');\n            obj[key[0]] = key[1];\n        }\n    });\n    return obj;\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n// Copyright 2011 The Closure Library Authors. All Rights Reserved.\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n//      http://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS-IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n/**\r\n * @fileoverview Abstract cryptographic hash interface.\r\n *\r\n * See Sha1 and Md5 for sample implementations.\r\n *\r\n */\n/**\r\n * Create a cryptographic hash instance.\r\n *\r\n * @constructor\r\n * @struct\r\n */\nvar Hash = /** @class */function () {\n    function Hash() {\n        /**\r\n         * The block size for the hasher.\r\n         * @type {number}\r\n         */\n        this.blockSize = -1;\n    }\n    return Hash;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @fileoverview SHA-1 cryptographic hash.\r\n * Variable names follow the notation in FIPS PUB 180-3:\r\n * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.\r\n *\r\n * Usage:\r\n *   var sha1 = new sha1();\r\n *   sha1.update(bytes);\r\n *   var hash = sha1.digest();\r\n *\r\n * Performance:\r\n *   Chrome 23:   ~400 Mbit/s\r\n *   Firefox 16:  ~250 Mbit/s\r\n *\r\n */\n/**\r\n * SHA-1 cryptographic hash constructor.\r\n *\r\n * The properties declared here are discussed in the above algorithm document.\r\n * @constructor\r\n * @extends {Hash}\r\n * @final\r\n * @struct\r\n */\nvar Sha1 = /** @class */function (_super) {\n    tslib_1.__extends(Sha1, _super);\n    function Sha1() {\n        var _this = _super.call(this) || this;\n        /**\r\n         * Holds the previous values of accumulated variables a-e in the compress_\r\n         * function.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\n        _this.chain_ = [];\n        /**\r\n         * A buffer holding the partially computed hash result.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\n        _this.buf_ = [];\n        /**\r\n         * An array of 80 bytes, each a part of the message to be hashed.  Referred to\r\n         * as the message schedule in the docs.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\n        _this.W_ = [];\n        /**\r\n         * Contains data needed to pad messages less than 64 bytes.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\n        _this.pad_ = [];\n        /**\r\n         * @private {number}\r\n         */\n        _this.inbuf_ = 0;\n        /**\r\n         * @private {number}\r\n         */\n        _this.total_ = 0;\n        _this.blockSize = 512 / 8;\n        _this.pad_[0] = 128;\n        for (var i = 1; i < _this.blockSize; ++i) {\n            _this.pad_[i] = 0;\n        }\n        _this.reset();\n        return _this;\n    }\n    Sha1.prototype.reset = function () {\n        this.chain_[0] = 0x67452301;\n        this.chain_[1] = 0xefcdab89;\n        this.chain_[2] = 0x98badcfe;\n        this.chain_[3] = 0x10325476;\n        this.chain_[4] = 0xc3d2e1f0;\n        this.inbuf_ = 0;\n        this.total_ = 0;\n    };\n    /**\r\n     * Internal compress helper function.\r\n     * @param {!Array<number>|!Uint8Array|string} buf Block to compress.\r\n     * @param {number=} opt_offset Offset of the block in the buffer.\r\n     * @private\r\n     */\n    Sha1.prototype.compress_ = function (buf, opt_offset) {\n        if (!opt_offset) {\n            opt_offset = 0;\n        }\n        var W = this.W_;\n        // get 16 big endian words\n        if (typeof buf === 'string') {\n            for (var i = 0; i < 16; i++) {\n                // TODO(user): [bug 8140122] Recent versions of Safari for Mac OS and iOS\n                // have a bug that turns the post-increment ++ operator into pre-increment\n                // during JIT compilation.  We have code that depends heavily on SHA-1 for\n                // correctness and which is affected by this bug, so I've removed all uses\n                // of post-increment ++ in which the result value is used.  We can revert\n                // this change once the Safari bug\n                // (https://bugs.webkit.org/show_bug.cgi?id=109036) has been fixed and\n                // most clients have been updated.\n                W[i] = buf.charCodeAt(opt_offset) << 24 | buf.charCodeAt(opt_offset + 1) << 16 | buf.charCodeAt(opt_offset + 2) << 8 | buf.charCodeAt(opt_offset + 3);\n                opt_offset += 4;\n            }\n        } else {\n            for (var i = 0; i < 16; i++) {\n                W[i] = buf[opt_offset] << 24 | buf[opt_offset + 1] << 16 | buf[opt_offset + 2] << 8 | buf[opt_offset + 3];\n                opt_offset += 4;\n            }\n        }\n        // expand to 80 words\n        for (var i = 16; i < 80; i++) {\n            var t = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];\n            W[i] = (t << 1 | t >>> 31) & 0xffffffff;\n        }\n        var a = this.chain_[0];\n        var b = this.chain_[1];\n        var c = this.chain_[2];\n        var d = this.chain_[3];\n        var e = this.chain_[4];\n        var f, k;\n        // TODO(user): Try to unroll this loop to speed up the computation.\n        for (var i = 0; i < 80; i++) {\n            if (i < 40) {\n                if (i < 20) {\n                    f = d ^ b & (c ^ d);\n                    k = 0x5a827999;\n                } else {\n                    f = b ^ c ^ d;\n                    k = 0x6ed9eba1;\n                }\n            } else {\n                if (i < 60) {\n                    f = b & c | d & (b | c);\n                    k = 0x8f1bbcdc;\n                } else {\n                    f = b ^ c ^ d;\n                    k = 0xca62c1d6;\n                }\n            }\n            var t = (a << 5 | a >>> 27) + f + e + k + W[i] & 0xffffffff;\n            e = d;\n            d = c;\n            c = (b << 30 | b >>> 2) & 0xffffffff;\n            b = a;\n            a = t;\n        }\n        this.chain_[0] = this.chain_[0] + a & 0xffffffff;\n        this.chain_[1] = this.chain_[1] + b & 0xffffffff;\n        this.chain_[2] = this.chain_[2] + c & 0xffffffff;\n        this.chain_[3] = this.chain_[3] + d & 0xffffffff;\n        this.chain_[4] = this.chain_[4] + e & 0xffffffff;\n    };\n    Sha1.prototype.update = function (bytes, opt_length) {\n        // TODO(johnlenz): tighten the function signature and remove this check\n        if (bytes == null) {\n            return;\n        }\n        if (opt_length === undefined) {\n            opt_length = bytes.length;\n        }\n        var lengthMinusBlock = opt_length - this.blockSize;\n        var n = 0;\n        // Using local instead of member variables gives ~5% speedup on Firefox 16.\n        var buf = this.buf_;\n        var inbuf = this.inbuf_;\n        // The outer while loop should execute at most twice.\n        while (n < opt_length) {\n            // When we have no data in the block to top up, we can directly process the\n            // input buffer (assuming it contains sufficient data). This gives ~25%\n            // speedup on Chrome 23 and ~15% speedup on Firefox 16, but requires that\n            // the data is provided in large chunks (or in multiples of 64 bytes).\n            if (inbuf == 0) {\n                while (n <= lengthMinusBlock) {\n                    this.compress_(bytes, n);\n                    n += this.blockSize;\n                }\n            }\n            if (typeof bytes === 'string') {\n                while (n < opt_length) {\n                    buf[inbuf] = bytes.charCodeAt(n);\n                    ++inbuf;\n                    ++n;\n                    if (inbuf == this.blockSize) {\n                        this.compress_(buf);\n                        inbuf = 0;\n                        // Jump to the outer loop so we use the full-block optimization.\n                        break;\n                    }\n                }\n            } else {\n                while (n < opt_length) {\n                    buf[inbuf] = bytes[n];\n                    ++inbuf;\n                    ++n;\n                    if (inbuf == this.blockSize) {\n                        this.compress_(buf);\n                        inbuf = 0;\n                        // Jump to the outer loop so we use the full-block optimization.\n                        break;\n                    }\n                }\n            }\n        }\n        this.inbuf_ = inbuf;\n        this.total_ += opt_length;\n    };\n    /** @override */\n    Sha1.prototype.digest = function () {\n        var digest = [];\n        var totalBits = this.total_ * 8;\n        // Add pad 0x80 0x00*.\n        if (this.inbuf_ < 56) {\n            this.update(this.pad_, 56 - this.inbuf_);\n        } else {\n            this.update(this.pad_, this.blockSize - (this.inbuf_ - 56));\n        }\n        // Add # bits.\n        for (var i = this.blockSize - 1; i >= 56; i--) {\n            this.buf_[i] = totalBits & 255;\n            totalBits /= 256; // Don't use bit-shifting here!\n        }\n        this.compress_(this.buf_);\n        var n = 0;\n        for (var i = 0; i < 5; i++) {\n            for (var j = 24; j >= 0; j -= 8) {\n                digest[n] = this.chain_[i] >> j & 255;\n                ++n;\n            }\n        }\n        return digest;\n    };\n    return Sha1;\n}(Hash);\n\n/**\r\n * Helper to make a Subscribe function (just like Promise helps make a\r\n * Thenable).\r\n *\r\n * @param executor Function which can make calls to a single Observer\r\n *     as a proxy.\r\n * @param onNoObservers Callback when count of Observers goes to zero.\r\n */\nfunction createSubscribe(executor, onNoObservers) {\n    var proxy = new ObserverProxy(executor, onNoObservers);\n    return proxy.subscribe.bind(proxy);\n}\n/**\r\n * Implement fan-out for any number of Observers attached via a subscribe\r\n * function.\r\n */\nvar ObserverProxy = /** @class */function () {\n    /**\r\n     * @param executor Function which can make calls to a single Observer\r\n     *     as a proxy.\r\n     * @param onNoObservers Callback when count of Observers goes to zero.\r\n     */\n    function ObserverProxy(executor, onNoObservers) {\n        var _this = this;\n        this.observers = [];\n        this.unsubscribes = [];\n        this.observerCount = 0;\n        // Micro-task scheduling by calling task.then().\n        this.task = Promise.resolve();\n        this.finalized = false;\n        this.onNoObservers = onNoObservers;\n        // Call the executor asynchronously so subscribers that are called\n        // synchronously after the creation of the subscribe function\n        // can still receive the very first value generated in the executor.\n        this.task.then(function () {\n            executor(_this);\n        }).catch(function (e) {\n            _this.error(e);\n        });\n    }\n    ObserverProxy.prototype.next = function (value) {\n        this.forEachObserver(function (observer) {\n            observer.next(value);\n        });\n    };\n    ObserverProxy.prototype.error = function (error) {\n        this.forEachObserver(function (observer) {\n            observer.error(error);\n        });\n        this.close(error);\n    };\n    ObserverProxy.prototype.complete = function () {\n        this.forEachObserver(function (observer) {\n            observer.complete();\n        });\n        this.close();\n    };\n    /**\r\n     * Subscribe function that can be used to add an Observer to the fan-out list.\r\n     *\r\n     * - We require that no event is sent to a subscriber sychronously to their\r\n     *   call to subscribe().\r\n     */\n    ObserverProxy.prototype.subscribe = function (nextOrObserver, error, complete) {\n        var _this = this;\n        var observer;\n        if (nextOrObserver === undefined && error === undefined && complete === undefined) {\n            throw new Error('Missing Observer.');\n        }\n        // Assemble an Observer object when passed as callback functions.\n        if (implementsAnyMethods(nextOrObserver, ['next', 'error', 'complete'])) {\n            observer = nextOrObserver;\n        } else {\n            observer = {\n                next: nextOrObserver,\n                error: error,\n                complete: complete\n            };\n        }\n        if (observer.next === undefined) {\n            observer.next = noop;\n        }\n        if (observer.error === undefined) {\n            observer.error = noop;\n        }\n        if (observer.complete === undefined) {\n            observer.complete = noop;\n        }\n        var unsub = this.unsubscribeOne.bind(this, this.observers.length);\n        // Attempt to subscribe to a terminated Observable - we\n        // just respond to the Observer with the final error or complete\n        // event.\n        if (this.finalized) {\n            this.task.then(function () {\n                try {\n                    if (_this.finalError) {\n                        observer.error(_this.finalError);\n                    } else {\n                        observer.complete();\n                    }\n                } catch (e) {\n                    // nothing\n                }\n                return;\n            });\n        }\n        this.observers.push(observer);\n        return unsub;\n    };\n    // Unsubscribe is synchronous - we guarantee that no events are sent to\n    // any unsubscribed Observer.\n    ObserverProxy.prototype.unsubscribeOne = function (i) {\n        if (this.observers === undefined || this.observers[i] === undefined) {\n            return;\n        }\n        delete this.observers[i];\n        this.observerCount -= 1;\n        if (this.observerCount === 0 && this.onNoObservers !== undefined) {\n            this.onNoObservers(this);\n        }\n    };\n    ObserverProxy.prototype.forEachObserver = function (fn) {\n        if (this.finalized) {\n            // Already closed by previous event....just eat the additional values.\n            return;\n        }\n        // Since sendOne calls asynchronously - there is no chance that\n        // this.observers will become undefined.\n        for (var i = 0; i < this.observers.length; i++) {\n            this.sendOne(i, fn);\n        }\n    };\n    // Call the Observer via one of it's callback function. We are careful to\n    // confirm that the observe has not been unsubscribed since this asynchronous\n    // function had been queued.\n    ObserverProxy.prototype.sendOne = function (i, fn) {\n        var _this = this;\n        // Execute the callback asynchronously\n        this.task.then(function () {\n            if (_this.observers !== undefined && _this.observers[i] !== undefined) {\n                try {\n                    fn(_this.observers[i]);\n                } catch (e) {\n                    // Ignore exceptions raised in Observers or missing methods of an\n                    // Observer.\n                    // Log error to console. b/31404806\n                    if (typeof console !== 'undefined' && console.error) {\n                        console.error(e);\n                    }\n                }\n            }\n        });\n    };\n    ObserverProxy.prototype.close = function (err) {\n        var _this = this;\n        if (this.finalized) {\n            return;\n        }\n        this.finalized = true;\n        if (err !== undefined) {\n            this.finalError = err;\n        }\n        // Proxy is no longer needed - garbage collect references\n        this.task.then(function () {\n            _this.observers = undefined;\n            _this.onNoObservers = undefined;\n        });\n    };\n    return ObserverProxy;\n}();\n/** Turn synchronous function into one called asynchronously. */\nfunction async(fn, onError) {\n    return function () {\n        var args = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            args[_i] = arguments[_i];\n        }\n        Promise.resolve(true).then(function () {\n            fn.apply(void 0, args);\n        }).catch(function (error) {\n            if (onError) {\n                onError(error);\n            }\n        });\n    };\n}\n/**\r\n * Return true if the object passed in implements any of the named methods.\r\n */\nfunction implementsAnyMethods(obj, methods) {\n    if (typeof obj !== 'object' || obj === null) {\n        return false;\n    }\n    for (var _i = 0, methods_1 = methods; _i < methods_1.length; _i++) {\n        var method = methods_1[_i];\n        if (method in obj && typeof obj[method] === 'function') {\n            return true;\n        }\n    }\n    return false;\n}\nfunction noop() {}\n// do nothing\n\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Check to make sure the appropriate number of arguments are provided for a public function.\r\n * Throws an error if it fails.\r\n *\r\n * @param {!string} fnName The function name\r\n * @param {!number} minCount The minimum number of arguments to allow for the function call\r\n * @param {!number} maxCount The maximum number of argument to allow for the function call\r\n * @param {!number} argCount The actual number of arguments provided.\r\n */\nvar validateArgCount = function validateArgCount(fnName, minCount, maxCount, argCount) {\n    var argError;\n    if (argCount < minCount) {\n        argError = 'at least ' + minCount;\n    } else if (argCount > maxCount) {\n        argError = maxCount === 0 ? 'none' : 'no more than ' + maxCount;\n    }\n    if (argError) {\n        var error = fnName + ' failed: Was called with ' + argCount + (argCount === 1 ? ' argument.' : ' arguments.') + ' Expects ' + argError + '.';\n        throw new Error(error);\n    }\n};\n/**\r\n * Generates a string to prefix an error message about failed argument validation\r\n *\r\n * @param {!string} fnName The function name\r\n * @param {!number} argumentNumber The index of the argument\r\n * @param {boolean} optional Whether or not the argument is optional\r\n * @return {!string} The prefix to add to the error thrown for validation.\r\n */\nfunction errorPrefix(fnName, argumentNumber, optional) {\n    var argName = '';\n    switch (argumentNumber) {\n        case 1:\n            argName = optional ? 'first' : 'First';\n            break;\n        case 2:\n            argName = optional ? 'second' : 'Second';\n            break;\n        case 3:\n            argName = optional ? 'third' : 'Third';\n            break;\n        case 4:\n            argName = optional ? 'fourth' : 'Fourth';\n            break;\n        default:\n            throw new Error('errorPrefix called with argumentNumber > 4.  Need to update it?');\n    }\n    var error = fnName + ' failed: ';\n    error += argName + ' argument ';\n    return error;\n}\n/**\r\n * @param {!string} fnName\r\n * @param {!number} argumentNumber\r\n * @param {!string} namespace\r\n * @param {boolean} optional\r\n */\nfunction validateNamespace(fnName, argumentNumber, namespace, optional) {\n    if (optional && !namespace) return;\n    if (typeof namespace !== 'string') {\n        //TODO: I should do more validation here. We only allow certain chars in namespaces.\n        throw new Error(errorPrefix(fnName, argumentNumber, optional) + 'must be a valid firebase namespace.');\n    }\n}\nfunction validateCallback(fnName, argumentNumber, callback, optional) {\n    if (optional && !callback) return;\n    if (typeof callback !== 'function') throw new Error(errorPrefix(fnName, argumentNumber, optional) + 'must be a valid function.');\n}\nfunction validateContextObject(fnName, argumentNumber, context, optional) {\n    if (optional && !context) return;\n    if (typeof context !== 'object' || context === null) throw new Error(errorPrefix(fnName, argumentNumber, optional) + 'must be a valid context object.');\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n// Code originally came from goog.crypt.stringToUtf8ByteArray, but for some reason they\n// automatically replaced '\\r\\n' with '\\n', and they didn't handle surrogate pairs,\n// so it's been modified.\n// Note that not all Unicode characters appear as single characters in JavaScript strings.\n// fromCharCode returns the UTF-16 encoding of a character - so some Unicode characters\n// use 2 characters in Javascript.  All 4-byte UTF-8 characters begin with a first\n// character in the range 0xD800 - 0xDBFF (the first character of a so-called surrogate\n// pair).\n// See http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.3\n/**\r\n * @param {string} str\r\n * @return {Array}\r\n */\nvar stringToByteArray$1 = function stringToByteArray$1(str) {\n    var out = [],\n        p = 0;\n    for (var i = 0; i < str.length; i++) {\n        var c = str.charCodeAt(i);\n        // Is this the lead surrogate in a surrogate pair?\n        if (c >= 0xd800 && c <= 0xdbff) {\n            var high = c - 0xd800; // the high 10 bits.\n            i++;\n            assert(i < str.length, 'Surrogate pair missing trail surrogate.');\n            var low = str.charCodeAt(i) - 0xdc00; // the low 10 bits.\n            c = 0x10000 + (high << 10) + low;\n        }\n        if (c < 128) {\n            out[p++] = c;\n        } else if (c < 2048) {\n            out[p++] = c >> 6 | 192;\n            out[p++] = c & 63 | 128;\n        } else if (c < 65536) {\n            out[p++] = c >> 12 | 224;\n            out[p++] = c >> 6 & 63 | 128;\n            out[p++] = c & 63 | 128;\n        } else {\n            out[p++] = c >> 18 | 240;\n            out[p++] = c >> 12 & 63 | 128;\n            out[p++] = c >> 6 & 63 | 128;\n            out[p++] = c & 63 | 128;\n        }\n    }\n    return out;\n};\n/**\r\n * Calculate length without actually converting; useful for doing cheaper validation.\r\n * @param {string} str\r\n * @return {number}\r\n */\nvar stringLength = function stringLength(str) {\n    var p = 0;\n    for (var i = 0; i < str.length; i++) {\n        var c = str.charCodeAt(i);\n        if (c < 128) {\n            p++;\n        } else if (c < 2048) {\n            p += 2;\n        } else if (c >= 0xd800 && c <= 0xdbff) {\n            // Lead surrogate of a surrogate pair.  The pair together will take 4 bytes to represent.\n            p += 4;\n            i++; // skip trail surrogate.\n        } else {\n            p += 3;\n        }\n    }\n    return p;\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n\nexports.assert = assert;\nexports.assertionError = assertionError;\nexports.base64 = base64;\nexports.base64Decode = base64Decode;\nexports.base64Encode = base64Encode;\nexports.CONSTANTS = CONSTANTS;\nexports.deepCopy = deepCopy;\nexports.deepExtend = deepExtend;\nexports.patchProperty = patchProperty;\nexports.Deferred = Deferred;\nexports.getUA = getUA;\nexports.isMobileCordova = isMobileCordova;\nexports.isNodeSdk = isNodeSdk;\nexports.isReactNative = isReactNative;\nexports.ErrorFactory = ErrorFactory;\nexports.FirebaseError = FirebaseError;\nexports.patchCapture = patchCapture;\nexports.jsonEval = jsonEval;\nexports.stringify = stringify;\nexports.decode = decode;\nexports.isAdmin = isAdmin;\nexports.issuedAtTime = issuedAtTime;\nexports.isValidFormat = isValidFormat;\nexports.isValidTimestamp = isValidTimestamp;\nexports.clone = clone;\nexports.contains = contains;\nexports.every = every;\nexports.extend = extend;\nexports.findKey = findKey;\nexports.findValue = findValue;\nexports.forEach = forEach;\nexports.getAnyKey = getAnyKey;\nexports.getCount = getCount;\nexports.getValues = getValues;\nexports.isEmpty = isEmpty;\nexports.isNonNullObject = isNonNullObject;\nexports.map = map;\nexports.safeGet = safeGet;\nexports.querystring = querystring;\nexports.querystringDecode = querystringDecode;\nexports.Sha1 = Sha1;\nexports.async = async;\nexports.createSubscribe = createSubscribe;\nexports.errorPrefix = errorPrefix;\nexports.validateArgCount = validateArgCount;\nexports.validateCallback = validateCallback;\nexports.validateContextObject = validateContextObject;\nexports.validateNamespace = validateNamespace;\nexports.stringLength = stringLength;\nexports.stringToByteArray = stringToByteArray$1;\n\n/***/ }),\n\n/***/ \"5dDi\":\n/***/ (function(module, exports) {\n\nvar hasOwnProperty = {}.hasOwnProperty;\nmodule.exports = function (it, key) {\n  return hasOwnProperty.call(it, key);\n};\n\n/***/ }),\n\n/***/ \"5sKr\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 7.1.15 ToLength\nvar toInteger = __webpack_require__(\"ojkp\");\nvar min = Math.min;\nmodule.exports = function (it) {\n  return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991\n};\n\n/***/ }),\n\n/***/ \"5sRW\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\nObject.defineProperty(__webpack_exports__, \"__esModule\", { value: true });\nvar util_namespaceObject = {};\n__webpack_require__.d(util_namespaceObject, \"createFocusTrapInstance\", function() { return createFocusTrapInstance; });\n\n// EXTERNAL MODULE: ../node_modules/@material/base/foundation.js\nvar foundation = __webpack_require__(\"uJAj\");\n\n// EXTERNAL MODULE: ../node_modules/@material/base/component.js\nvar component = __webpack_require__(\"EQDb\");\n\n// CONCATENATED MODULE: ../node_modules/@material/base/index.js\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n// EXTERNAL MODULE: ../node_modules/@material/ripple/index.js + 3 modules\nvar ripple = __webpack_require__(\"vkNc\");\n\n// CONCATENATED MODULE: ../node_modules/@material/dialog/constants.js\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nvar cssClasses = {\n  ROOT: 'mdc-dialog',\n  OPEN: 'mdc-dialog--open',\n  ANIMATING: 'mdc-dialog--animating',\n  BACKDROP: 'mdc-dialog__backdrop',\n  SCROLL_LOCK: 'mdc-dialog-scroll-lock',\n  ACCEPT_BTN: 'mdc-dialog__footer__button--accept',\n  CANCEL_BTN: 'mdc-dialog__footer__button--cancel'\n};\n\nvar strings = {\n  OPEN_DIALOG_SELECTOR: '.mdc-dialog--open',\n  DIALOG_SURFACE_SELECTOR: '.mdc-dialog__surface',\n  ACCEPT_SELECTOR: '.mdc-dialog__footer__button--accept',\n  ACCEPT_EVENT: 'MDCDialog:accept',\n  CANCEL_EVENT: 'MDCDialog:cancel'\n};\n\nvar numbers = {\n  DIALOG_ANIMATION_TIME_MS: 120\n};\n\n\n// CONCATENATED MODULE: ../node_modules/@material/dialog/foundation.js\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\nvar foundation_MDCDialogFoundation = function (_MDCFoundation) {\n  _inherits(MDCDialogFoundation, _MDCFoundation);\n\n  _createClass(MDCDialogFoundation, null, [{\n    key: 'cssClasses',\n    get: function get() {\n      return cssClasses;\n    }\n  }, {\n    key: 'strings',\n    get: function get() {\n      return strings;\n    }\n  }, {\n    key: 'numbers',\n    get: function get() {\n      return numbers;\n    }\n  }, {\n    key: 'defaultAdapter',\n    get: function get() {\n      return {\n        addClass: function addClass() /* className: string */{},\n        removeClass: function removeClass() /* className: string */{},\n        addBodyClass: function addBodyClass() /* className: string */{},\n        removeBodyClass: function removeBodyClass() /* className: string */{},\n        eventTargetHasClass: function eventTargetHasClass() {\n          return (/* target: EventTarget, className: string */ /* boolean */false\n          );\n        },\n        registerInteractionHandler: function registerInteractionHandler() /* evt: string, handler: EventListener */{},\n        deregisterInteractionHandler: function deregisterInteractionHandler() /* evt: string, handler: EventListener */{},\n        registerSurfaceInteractionHandler: function registerSurfaceInteractionHandler() /* evt: string, handler: EventListener */{},\n        deregisterSurfaceInteractionHandler: function deregisterSurfaceInteractionHandler() /* evt: string, handler: EventListener */{},\n        registerDocumentKeydownHandler: function registerDocumentKeydownHandler() /* handler: EventListener */{},\n        deregisterDocumentKeydownHandler: function deregisterDocumentKeydownHandler() /* handler: EventListener */{},\n        notifyAccept: function notifyAccept() {},\n        notifyCancel: function notifyCancel() {},\n        trapFocusOnSurface: function trapFocusOnSurface() {},\n        untrapFocusOnSurface: function untrapFocusOnSurface() {},\n        isDialog: function isDialog() {\n          return (/* el: Element */ /* boolean */false\n          );\n        }\n      };\n    }\n  }]);\n\n  function MDCDialogFoundation(adapter) {\n    _classCallCheck(this, MDCDialogFoundation);\n\n    var _this = _possibleConstructorReturn(this, _MDCFoundation.call(this, _extends(MDCDialogFoundation.defaultAdapter, adapter)));\n\n    _this.isOpen_ = false;\n    _this.componentClickHandler_ = function (evt) {\n      if (_this.adapter_.eventTargetHasClass(evt.target, cssClasses.BACKDROP)) {\n        _this.cancel(true);\n      }\n    };\n    _this.dialogClickHandler_ = function (evt) {\n      return _this.handleDialogClick_(evt);\n    };\n    _this.documentKeydownHandler_ = function (evt) {\n      if (evt.key && evt.key === 'Escape' || evt.keyCode === 27) {\n        _this.cancel(true);\n      }\n    };\n\n    _this.timerId_ = 0;\n    _this.animationTimerEnd_ = function (evt) {\n      return _this.handleAnimationTimerEnd_(evt);\n    };\n    return _this;\n  }\n\n  MDCDialogFoundation.prototype.destroy = function destroy() {\n    // Ensure that dialog is cleaned up when destroyed\n    if (this.isOpen_) {\n      this.close();\n    }\n    // Final cleanup of animating class in case the timer has not completed.\n    this.adapter_.removeClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    clearTimeout(this.timerId_);\n  };\n\n  MDCDialogFoundation.prototype.open = function open() {\n    this.isOpen_ = true;\n    this.disableScroll_();\n    this.adapter_.registerDocumentKeydownHandler(this.documentKeydownHandler_);\n    this.adapter_.registerSurfaceInteractionHandler('click', this.dialogClickHandler_);\n    this.adapter_.registerInteractionHandler('click', this.componentClickHandler_);\n    clearTimeout(this.timerId_);\n    this.timerId_ = setTimeout(this.animationTimerEnd_, MDCDialogFoundation.numbers.DIALOG_ANIMATION_TIME_MS);\n    this.adapter_.addClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    this.adapter_.addClass(MDCDialogFoundation.cssClasses.OPEN);\n  };\n\n  MDCDialogFoundation.prototype.close = function close() {\n    this.isOpen_ = false;\n    this.enableScroll_();\n    this.adapter_.deregisterSurfaceInteractionHandler('click', this.dialogClickHandler_);\n    this.adapter_.deregisterDocumentKeydownHandler(this.documentKeydownHandler_);\n    this.adapter_.deregisterInteractionHandler('click', this.componentClickHandler_);\n    this.adapter_.untrapFocusOnSurface();\n    clearTimeout(this.timerId_);\n    this.timerId_ = setTimeout(this.animationTimerEnd_, MDCDialogFoundation.numbers.DIALOG_ANIMATION_TIME_MS);\n    this.adapter_.addClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    this.adapter_.removeClass(MDCDialogFoundation.cssClasses.OPEN);\n  };\n\n  MDCDialogFoundation.prototype.isOpen = function isOpen() {\n    return this.isOpen_;\n  };\n\n  MDCDialogFoundation.prototype.accept = function accept(shouldNotify) {\n    if (shouldNotify) {\n      this.adapter_.notifyAccept();\n    }\n\n    this.close();\n  };\n\n  MDCDialogFoundation.prototype.cancel = function cancel(shouldNotify) {\n    if (shouldNotify) {\n      this.adapter_.notifyCancel();\n    }\n\n    this.close();\n  };\n\n  MDCDialogFoundation.prototype.handleDialogClick_ = function handleDialogClick_(evt) {\n    var target = evt.target;\n\n    if (this.adapter_.eventTargetHasClass(target, cssClasses.ACCEPT_BTN)) {\n      this.accept(true);\n    } else if (this.adapter_.eventTargetHasClass(target, cssClasses.CANCEL_BTN)) {\n      this.cancel(true);\n    }\n  };\n\n  MDCDialogFoundation.prototype.handleAnimationTimerEnd_ = function handleAnimationTimerEnd_() {\n    this.adapter_.removeClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    if (this.isOpen_) {\n      this.adapter_.trapFocusOnSurface();\n    }\n  };\n\n  MDCDialogFoundation.prototype.disableScroll_ = function disableScroll_() {\n    this.adapter_.addBodyClass(cssClasses.SCROLL_LOCK);\n  };\n\n  MDCDialogFoundation.prototype.enableScroll_ = function enableScroll_() {\n    this.adapter_.removeBodyClass(cssClasses.SCROLL_LOCK);\n  };\n\n  return MDCDialogFoundation;\n}(foundation[\"a\" /* default */]);\n\n\n// EXTERNAL MODULE: ../node_modules/focus-trap/index.js\nvar focus_trap = __webpack_require__(\"ySUw\");\nvar focus_trap_default = /*#__PURE__*/__webpack_require__.n(focus_trap);\n\n// CONCATENATED MODULE: ../node_modules/@material/dialog/util.js\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\nfunction createFocusTrapInstance(surfaceEl, acceptButtonEl) {\n  var focusTrapFactory = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : focus_trap_default.a;\n\n  return focusTrapFactory(surfaceEl, {\n    initialFocus: acceptButtonEl,\n    clickOutsideDeactivates: true\n  });\n}\n// CONCATENATED MODULE: ../node_modules/@material/dialog/index.js\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"MDCDialog\", function() { return dialog_MDCDialog; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"MDCDialogFoundation\", function() { return foundation_MDCDialogFoundation; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"util\", function() { return util_namespaceObject; });\nvar dialog__createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction dialog__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction dialog__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction dialog__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n\n\n\n\n\nvar dialog_MDCDialog = function (_MDCComponent) {\n  dialog__inherits(MDCDialog, _MDCComponent);\n\n  function MDCDialog() {\n    dialog__classCallCheck(this, MDCDialog);\n\n    return dialog__possibleConstructorReturn(this, _MDCComponent.apply(this, arguments));\n  }\n\n  MDCDialog.attachTo = function attachTo(root) {\n    return new MDCDialog(root);\n  };\n\n  MDCDialog.prototype.initialize = function initialize() {\n    this.focusTrap_ = createFocusTrapInstance(this.dialogSurface_, this.acceptButton_);\n    this.footerBtnRipples_ = [];\n\n    var footerBtns = this.root_.querySelectorAll('.mdc-dialog__footer__button');\n    for (var i = 0, footerBtn; footerBtn = footerBtns[i]; i++) {\n      this.footerBtnRipples_.push(new ripple[\"MDCRipple\"](footerBtn));\n    }\n  };\n\n  MDCDialog.prototype.destroy = function destroy() {\n    this.footerBtnRipples_.forEach(function (ripple) {\n      return ripple.destroy();\n    });\n    _MDCComponent.prototype.destroy.call(this);\n  };\n\n  MDCDialog.prototype.show = function show() {\n    this.foundation_.open();\n  };\n\n  MDCDialog.prototype.close = function close() {\n    this.foundation_.close();\n  };\n\n  MDCDialog.prototype.getDefaultFoundation = function getDefaultFoundation() {\n    var _this2 = this;\n\n    return new foundation_MDCDialogFoundation({\n      addClass: function addClass(className) {\n        return _this2.root_.classList.add(className);\n      },\n      removeClass: function removeClass(className) {\n        return _this2.root_.classList.remove(className);\n      },\n      addBodyClass: function addBodyClass(className) {\n        return document.body.classList.add(className);\n      },\n      removeBodyClass: function removeBodyClass(className) {\n        return document.body.classList.remove(className);\n      },\n      eventTargetHasClass: function eventTargetHasClass(target, className) {\n        return target.classList.contains(className);\n      },\n      registerInteractionHandler: function registerInteractionHandler(evt, handler) {\n        return _this2.root_.addEventListener(evt, handler);\n      },\n      deregisterInteractionHandler: function deregisterInteractionHandler(evt, handler) {\n        return _this2.root_.removeEventListener(evt, handler);\n      },\n      registerSurfaceInteractionHandler: function registerSurfaceInteractionHandler(evt, handler) {\n        return _this2.dialogSurface_.addEventListener(evt, handler);\n      },\n      deregisterSurfaceInteractionHandler: function deregisterSurfaceInteractionHandler(evt, handler) {\n        return _this2.dialogSurface_.removeEventListener(evt, handler);\n      },\n      registerDocumentKeydownHandler: function registerDocumentKeydownHandler(handler) {\n        return document.addEventListener('keydown', handler);\n      },\n      deregisterDocumentKeydownHandler: function deregisterDocumentKeydownHandler(handler) {\n        return document.removeEventListener('keydown', handler);\n      },\n      notifyAccept: function notifyAccept() {\n        return _this2.emit(foundation_MDCDialogFoundation.strings.ACCEPT_EVENT);\n      },\n      notifyCancel: function notifyCancel() {\n        return _this2.emit(foundation_MDCDialogFoundation.strings.CANCEL_EVENT);\n      },\n      trapFocusOnSurface: function trapFocusOnSurface() {\n        return _this2.focusTrap_.activate();\n      },\n      untrapFocusOnSurface: function untrapFocusOnSurface() {\n        return _this2.focusTrap_.deactivate();\n      },\n      isDialog: function isDialog(el) {\n        return el === _this2.dialogSurface_;\n      }\n    });\n  };\n\n  dialog__createClass(MDCDialog, [{\n    key: 'open',\n    get: function get() 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o[Symbol.iterator]();\n}\n\nfunction __makeTemplateObject(cooked, raw) {\n    if (Object.defineProperty) {\n        Object.defineProperty(cooked, \"raw\", { value: raw });\n    } else {\n        cooked.raw = raw;\n    }\n    return cooked;\n};\n\nfunction __importStar(mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) {\n        if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\n    }result.default = mod;\n    return result;\n}\n\nfunction __importDefault(mod) {\n    return mod && mod.__esModule ? mod : { default: mod };\n}\n\n/***/ }),\n\n/***/ \"82jB\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXTERNAL MODULE: ../node_modules/firebase/app/dist/index.cjs.js\nvar index_cjs = __webpack_require__(\"ZUoI\");\nvar index_cjs_default = /*#__PURE__*/__webpack_require__.n(index_cjs);\n\n// EXTERNAL MODULE: ../node_modules/@firebase/auth/dist/auth.esm.js\nvar auth_esm = __webpack_require__(\"EkFk\");\n\n// CONCATENATED MODULE: ../node_modules/firebase/auth/dist/index.esm.js\n\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n// EXTERNAL MODULE: ../node_modules/@firebase/database/dist/index.cjs.js\nvar dist_index_cjs = __webpack_require__(\"2vmM\");\nvar dist_index_cjs_default = /*#__PURE__*/__webpack_require__.n(dist_index_cjs);\n\n// CONCATENATED MODULE: ../node_modules/firebase/database/dist/index.esm.js\n\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n// EXTERNAL MODULE: ../node_modules/@firebase/app/dist/index.cjs.js\nvar app_dist_index_cjs = __webpack_require__(\"dP58\");\nvar app_dist_index_cjs_default = /*#__PURE__*/__webpack_require__.n(app_dist_index_cjs);\n\n// CONCATENATED MODULE: ../node_modules/@firebase/storage/dist/index.esm.js\n\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @fileoverview Constants used in the Firebase Storage library.\r\n */\n/**\r\n * Domain and scheme for API calls.\r\n */\nvar domainBase = 'https://firebasestorage.googleapis.com';\n/**\r\n * Domain and scheme for object downloads.\r\n */\nvar downloadBase = 'https://firebasestorage.googleapis.com';\n/**\r\n * Base URL for non-upload calls to the API.\r\n */\nvar apiBaseUrl = '/v0';\n/**\r\n * Base URL for upload calls to the API.\r\n */\nvar apiUploadBaseUrl = '/v0';\nvar configOption = 'storageBucket';\n/**\r\n * 2 minutes\r\n */\nvar defaultMaxOperationRetryTime = 2 * 60 * 1000;\n/**\r\n * 10 minutes\r\n */\nvar defaultMaxUploadRetryTime = 10 * 60 * 100;\n/**\r\n * This is the value of Number.MIN_SAFE_INTEGER, which is not well supported\r\n * enough for us to use it directly.\r\n */\nvar minSafeInteger = -9007199254740991;\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nvar FirebaseStorageError = /** @class */function () {\n    function FirebaseStorageError(code, message) {\n        this.code_ = prependCode(code);\n        this.message_ = 'Firebase Storage: ' + message;\n        this.serverResponse_ = null;\n        this.name_ = 'FirebaseError';\n    }\n    FirebaseStorageError.prototype.codeProp = function () {\n        return this.code;\n    };\n    FirebaseStorageError.prototype.codeEquals = function (code) {\n        return prependCode(code) === this.codeProp();\n    };\n    FirebaseStorageError.prototype.serverResponseProp = function () {\n        return this.serverResponse_;\n    };\n    FirebaseStorageError.prototype.setServerResponseProp = function (serverResponse) {\n        this.serverResponse_ = serverResponse;\n    };\n    Object.defineProperty(FirebaseStorageError.prototype, \"name\", {\n        get: function get() {\n            return this.name_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(FirebaseStorageError.prototype, \"code\", {\n        get: function get() {\n            return this.code_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(FirebaseStorageError.prototype, \"message\", {\n        get: function get() {\n            return this.message_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(FirebaseStorageError.prototype, \"serverResponse\", {\n        get: function get() {\n            return this.serverResponse_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    return FirebaseStorageError;\n}();\nvar Code = {\n    // Shared between all platforms\n    UNKNOWN: 'unknown',\n    OBJECT_NOT_FOUND: 'object-not-found',\n    BUCKET_NOT_FOUND: 'bucket-not-found',\n    PROJECT_NOT_FOUND: 'project-not-found',\n    QUOTA_EXCEEDED: 'quota-exceeded',\n    UNAUTHENTICATED: 'unauthenticated',\n    UNAUTHORIZED: 'unauthorized',\n    RETRY_LIMIT_EXCEEDED: 'retry-limit-exceeded',\n    INVALID_CHECKSUM: 'invalid-checksum',\n    CANCELED: 'canceled',\n    // JS specific\n    INVALID_EVENT_NAME: 'invalid-event-name',\n    INVALID_URL: 'invalid-url',\n    INVALID_DEFAULT_BUCKET: 'invalid-default-bucket',\n    NO_DEFAULT_BUCKET: 'no-default-bucket',\n    CANNOT_SLICE_BLOB: 'cannot-slice-blob',\n    SERVER_FILE_WRONG_SIZE: 'server-file-wrong-size',\n    NO_DOWNLOAD_URL: 'no-download-url',\n    INVALID_ARGUMENT: 'invalid-argument',\n    INVALID_ARGUMENT_COUNT: 'invalid-argument-count',\n    APP_DELETED: 'app-deleted',\n    INVALID_ROOT_OPERATION: 'invalid-root-operation',\n    INVALID_FORMAT: 'invalid-format',\n    INTERNAL_ERROR: 'internal-error'\n};\nfunction prependCode(code) {\n    return 'storage/' + code;\n}\nfunction unknown() {\n    var message = 'An unknown error occurred, please check the error payload for ' + 'server response.';\n    return new FirebaseStorageError(Code.UNKNOWN, message);\n}\nfunction objectNotFound(path) {\n    return new FirebaseStorageError(Code.OBJECT_NOT_FOUND, \"Object '\" + path + \"' does not exist.\");\n}\nfunction quotaExceeded(bucket) {\n    return new FirebaseStorageError(Code.QUOTA_EXCEEDED, \"Quota for bucket '\" + bucket + \"' exceeded, please view quota on \" + 'https://firebase.google.com/pricing/.');\n}\nfunction unauthenticated() {\n    var message = 'User is not authenticated, please authenticate using Firebase ' + 'Authentication and try again.';\n    return new FirebaseStorageError(Code.UNAUTHENTICATED, message);\n}\nfunction unauthorized(path) {\n    return new FirebaseStorageError(Code.UNAUTHORIZED, \"User does not have permission to access '\" + path + \"'.\");\n}\nfunction retryLimitExceeded() {\n    return new FirebaseStorageError(Code.RETRY_LIMIT_EXCEEDED, 'Max retry time for operation exceeded, please try again.');\n}\nfunction canceled() {\n    return new FirebaseStorageError(Code.CANCELED, 'User canceled the upload/download.');\n}\nfunction invalidUrl(url) {\n    return new FirebaseStorageError(Code.INVALID_URL, \"Invalid URL '\" + url + \"'.\");\n}\nfunction invalidDefaultBucket(bucket) {\n    return new FirebaseStorageError(Code.INVALID_DEFAULT_BUCKET, \"Invalid default bucket '\" + bucket + \"'.\");\n}\nfunction cannotSliceBlob() {\n    return new FirebaseStorageError(Code.CANNOT_SLICE_BLOB, 'Cannot slice blob for upload. Please retry the upload.');\n}\nfunction serverFileWrongSize() {\n    return new FirebaseStorageError(Code.SERVER_FILE_WRONG_SIZE, 'Server recorded incorrect upload file size, please retry the upload.');\n}\nfunction noDownloadURL() {\n    return new FirebaseStorageError(Code.NO_DOWNLOAD_URL, 'The given file does not have any download URLs.');\n}\nfunction invalidArgument(index, fnName, message) {\n    return new FirebaseStorageError(Code.INVALID_ARGUMENT, 'Invalid argument in `' + fnName + '` at index ' + index + ': ' + message);\n}\nfunction invalidArgumentCount(argMin, argMax, fnName, real) {\n    var countPart;\n    var plural;\n    if (argMin === argMax) {\n        countPart = argMin;\n        plural = argMin === 1 ? 'argument' : 'arguments';\n    } else {\n        countPart = 'between ' + argMin + ' and ' + argMax;\n        plural = 'arguments';\n    }\n    return new FirebaseStorageError(Code.INVALID_ARGUMENT_COUNT, 'Invalid argument count in `' + fnName + '`: Expected ' + countPart + ' ' + plural + ', received ' + real + '.');\n}\nfunction appDeleted() {\n    return new FirebaseStorageError(Code.APP_DELETED, 'The Firebase app was deleted.');\n}\n/**\r\n * @param name The name of the operation that was invalid.\r\n */\nfunction invalidRootOperation(name) {\n    return new FirebaseStorageError(Code.INVALID_ROOT_OPERATION, \"The operation '\" + name + \"' cannot be performed on a root reference, create a non-root \" + \"reference using child, such as .child('file.png').\");\n}\n/**\r\n * @param format The format that was not valid.\r\n * @param message A message describing the format violation.\r\n */\nfunction invalidFormat(format, message) {\n    return new FirebaseStorageError(Code.INVALID_FORMAT, \"String does not match format '\" + format + \"': \" + message);\n}\n/**\r\n * @param message A message describing the internal error.\r\n */\nfunction internalError(message) {\n    throw new FirebaseStorageError(Code.INTERNAL_ERROR, 'Internal error: ' + message);\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nvar StringFormat = {\n    RAW: 'raw',\n    BASE64: 'base64',\n    BASE64URL: 'base64url',\n    DATA_URL: 'data_url'\n};\nfunction formatValidator(stringFormat) {\n    switch (stringFormat) {\n        case StringFormat.RAW:\n        case StringFormat.BASE64:\n        case StringFormat.BASE64URL:\n        case StringFormat.DATA_URL:\n            return;\n        default:\n            throw 'Expected one of the event types: [' + StringFormat.RAW + ', ' + StringFormat.BASE64 + ', ' + StringFormat.BASE64URL + ', ' + StringFormat.DATA_URL + '].';\n    }\n}\n/**\r\n * @struct\r\n */\nvar StringData = /** @class */function () {\n    function StringData(data, opt_contentType) {\n        this.data = data;\n        this.contentType = opt_contentType || null;\n    }\n    return StringData;\n}();\nfunction dataFromString(format, string) {\n    switch (format) {\n        case StringFormat.RAW:\n            return new StringData(utf8Bytes_(string));\n        case StringFormat.BASE64:\n        case StringFormat.BASE64URL:\n            return new StringData(base64Bytes_(format, string));\n        case StringFormat.DATA_URL:\n            return new StringData(dataURLBytes_(string), dataURLContentType_(string));\n    }\n    // assert(false);\n    throw unknown();\n}\nfunction utf8Bytes_(string) {\n    var b = [];\n    for (var i = 0; i < string.length; i++) {\n        var c = string.charCodeAt(i);\n        if (c <= 127) {\n            b.push(c);\n        } else {\n            if (c <= 2047) {\n                b.push(192 | c >> 6, 128 | c & 63);\n            } else {\n                if ((c & 64512) == 55296) {\n                    // The start of a surrogate pair.\n                    var valid = i < string.length - 1 && (string.charCodeAt(i + 1) & 64512) == 56320;\n                    if (!valid) {\n                        // The second surrogate wasn't there.\n                        b.push(239, 191, 189);\n                    } else {\n                        var hi = c;\n                        var lo = string.charCodeAt(++i);\n                        c = 65536 | (hi & 1023) << 10 | lo & 1023;\n                        b.push(240 | c >> 18, 128 | c >> 12 & 63, 128 | c >> 6 & 63, 128 | c & 63);\n                    }\n                } else {\n                    if ((c & 64512) == 56320) {\n                        // Invalid low surrogate.\n                        b.push(239, 191, 189);\n                    } else {\n                        b.push(224 | c >> 12, 128 | c >> 6 & 63, 128 | c & 63);\n                    }\n                }\n            }\n        }\n    }\n    return new Uint8Array(b);\n}\nfunction percentEncodedBytes_(string) {\n    var decoded;\n    try {\n        decoded = decodeURIComponent(string);\n    } catch (e) {\n        throw invalidFormat(StringFormat.DATA_URL, 'Malformed data URL.');\n    }\n    return utf8Bytes_(decoded);\n}\nfunction base64Bytes_(format, string) {\n    switch (format) {\n        case StringFormat.BASE64:\n            {\n                var hasMinus = string.indexOf('-') !== -1;\n                var hasUnder = string.indexOf('_') !== -1;\n                if (hasMinus || hasUnder) {\n                    var invalidChar = hasMinus ? '-' : '_';\n                    throw invalidFormat(format, \"Invalid character '\" + invalidChar + \"' found: is it base64url encoded?\");\n                }\n                break;\n            }\n        case StringFormat.BASE64URL:\n            {\n                var hasPlus = string.indexOf('+') !== -1;\n                var hasSlash = string.indexOf('/') !== -1;\n                if (hasPlus || hasSlash) {\n                    var invalidChar = hasPlus ? '+' : '/';\n                    throw invalidFormat(format, \"Invalid character '\" + invalidChar + \"' found: is it base64 encoded?\");\n                }\n                string = string.replace(/-/g, '+').replace(/_/g, '/');\n                break;\n            }\n    }\n    var bytes;\n    try {\n        bytes = atob(string);\n    } catch (e) {\n        throw invalidFormat(format, 'Invalid character found');\n    }\n    var array = new Uint8Array(bytes.length);\n    for (var i = 0; i < bytes.length; i++) {\n        array[i] = bytes.charCodeAt(i);\n    }\n    return array;\n}\n/**\r\n * @struct\r\n */\nvar DataURLParts = /** @class */function () {\n    function DataURLParts(dataURL) {\n        this.base64 = false;\n        this.contentType = null;\n        var matches = dataURL.match(/^data:([^,]+)?,/);\n        if (matches === null) {\n            throw invalidFormat(StringFormat.DATA_URL, \"Must be formatted 'data:[<mediatype>][;base64],<data>\");\n        }\n        var middle = matches[1] || null;\n        if (middle != null) {\n            this.base64 = endsWith(middle, ';base64');\n            this.contentType = this.base64 ? middle.substring(0, middle.length - ';base64'.length) : middle;\n        }\n        this.rest = dataURL.substring(dataURL.indexOf(',') + 1);\n    }\n    return DataURLParts;\n}();\nfunction dataURLBytes_(string) {\n    var parts = new DataURLParts(string);\n    if (parts.base64) {\n        return base64Bytes_(StringFormat.BASE64, parts.rest);\n    } else {\n        return percentEncodedBytes_(parts.rest);\n    }\n}\nfunction dataURLContentType_(string) {\n    var parts = new DataURLParts(string);\n    return parts.contentType;\n}\nfunction endsWith(s, end) {\n    var longEnough = s.length >= end.length;\n    if (!longEnough) {\n        return false;\n    }\n    return s.substring(s.length - end.length) === end;\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nvar TaskEvent = {\n    /** Triggered whenever the task changes or progress is updated. */\n    STATE_CHANGED: 'state_changed'\n};\nvar InternalTaskState = {\n    RUNNING: 'running',\n    PAUSING: 'pausing',\n    PAUSED: 'paused',\n    SUCCESS: 'success',\n    CANCELING: 'canceling',\n    CANCELED: 'canceled',\n    ERROR: 'error'\n};\nvar TaskState = {\n    /** The task is currently transferring data. */\n    RUNNING: 'running',\n    /** The task was paused by the user. */\n    PAUSED: 'paused',\n    /** The task completed successfully. */\n    SUCCESS: 'success',\n    /** The task was canceled. */\n    CANCELED: 'canceled',\n    /** The task failed with an error. */\n    ERROR: 'error'\n};\nfunction taskStateFromInternalTaskState(state) {\n    switch (state) {\n        case InternalTaskState.RUNNING:\n        case InternalTaskState.PAUSING:\n        case InternalTaskState.CANCELING:\n            return TaskState.RUNNING;\n        case InternalTaskState.PAUSED:\n            return TaskState.PAUSED;\n        case InternalTaskState.SUCCESS:\n            return TaskState.SUCCESS;\n        case InternalTaskState.CANCELED:\n            return TaskState.CANCELED;\n        case InternalTaskState.ERROR:\n            return TaskState.ERROR;\n        default:\n            // TODO(andysoto): assert(false);\n            return TaskState.ERROR;\n    }\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @fileoverview Contains methods for working with objects.\r\n */\nfunction contains(obj, prop) {\n    return Object.prototype.hasOwnProperty.call(obj, prop);\n}\nfunction forEach(obj, f) {\n    for (var key in obj) {\n        if (contains(obj, key)) {\n            f(key, obj[key]);\n        }\n    }\n}\nfunction clone(obj) {\n    if (obj == null) {\n        return {};\n    }\n    var c = {};\n    forEach(obj, function (key, val) {\n        c[key] = val;\n    });\n    return c;\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @fileoverview Implements the promise abstraction interface for external\r\n * (public SDK) packaging, which just passes through to the firebase-app impl.\r\n */\n/**\r\n * @template T\r\n * @param {function((function(T): void),\r\n *                  (function(!Error): void))} resolver\r\n */\nfunction make(resolver) {\n    return new Promise(resolver);\n}\n/**\r\n * @template T\r\n */\nfunction resolve(value) {\n    return Promise.resolve(value);\n}\nfunction reject(error) {\n    return Promise.reject(error);\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @return False if the object is undefined or null, true otherwise.\r\n */\nfunction isDef(p) {\n    return p != null;\n}\nfunction isJustDef(p) {\n    return p !== void 0;\n}\nfunction isFunction(p) {\n    return typeof p === 'function';\n}\nfunction isObject(p) {\n    return typeof p === 'object';\n}\nfunction isNonNullObject(p) {\n    return isObject(p) && p !== null;\n}\nfunction isNonArrayObject(p) {\n    return isObject(p) && !Array.isArray(p);\n}\nfunction isString(p) {\n    return typeof p === 'string' || p instanceof String;\n}\nfunction isNumber(p) {\n    return typeof p === 'number' || p instanceof Number;\n}\nfunction isNativeBlob(p) {\n    return isNativeBlobDefined() && p instanceof Blob;\n}\nfunction isNativeBlobDefined() {\n    return typeof Blob !== 'undefined';\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @enum{number}\r\n */\nvar ErrorCode;\n(function (ErrorCode) {\n    ErrorCode[ErrorCode[\"NO_ERROR\"] = 0] = \"NO_ERROR\";\n    ErrorCode[ErrorCode[\"NETWORK_ERROR\"] = 1] = \"NETWORK_ERROR\";\n    ErrorCode[ErrorCode[\"ABORT\"] = 2] = \"ABORT\";\n})(ErrorCode || (ErrorCode = {}));\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * We use this instead of goog.net.XhrIo because goog.net.XhrIo is hyuuuuge and\r\n * doesn't work in React Native on Android.\r\n */\nvar NetworkXhrIo = /** @class */function () {\n    function NetworkXhrIo() {\n        var _this = this;\n        this.sent_ = false;\n        this.xhr_ = new XMLHttpRequest();\n        this.errorCode_ = ErrorCode.NO_ERROR;\n        this.sendPromise_ = make(function (resolve, reject) {\n            _this.xhr_.addEventListener('abort', function (event) {\n                _this.errorCode_ = ErrorCode.ABORT;\n                resolve(_this);\n            });\n            _this.xhr_.addEventListener('error', function (event) {\n                _this.errorCode_ = ErrorCode.NETWORK_ERROR;\n                resolve(_this);\n            });\n            _this.xhr_.addEventListener('load', function (event) {\n                resolve(_this);\n            });\n        });\n    }\n    /**\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.send = function (url, method, opt_body, opt_headers) {\n        var _this = this;\n        if (this.sent_) {\n            throw internalError('cannot .send() more than once');\n        }\n        this.sent_ = true;\n        this.xhr_.open(method, url, true);\n        if (isDef(opt_headers)) {\n            var headers = opt_headers;\n            forEach(headers, function (key, val) {\n                _this.xhr_.setRequestHeader(key, val.toString());\n            });\n        }\n        if (isDef(opt_body)) {\n            this.xhr_.send(opt_body);\n        } else {\n            this.xhr_.send();\n        }\n        return this.sendPromise_;\n    };\n    /**\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.getErrorCode = function () {\n        if (!this.sent_) {\n            throw internalError('cannot .getErrorCode() before sending');\n        }\n        return this.errorCode_;\n    };\n    /**\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.getStatus = function () {\n        if (!this.sent_) {\n            throw internalError('cannot .getStatus() before sending');\n        }\n        try {\n            return this.xhr_.status;\n        } catch (e) {\n            return -1;\n        }\n    };\n    /**\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.getResponseText = function () {\n        if (!this.sent_) {\n            throw internalError('cannot .getResponseText() before sending');\n        }\n        return this.xhr_.responseText;\n    };\n    /**\r\n     * Aborts the request.\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.abort = function () {\n        this.xhr_.abort();\n    };\n    /**\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.getResponseHeader = function (header) {\n        return this.xhr_.getResponseHeader(header);\n    };\n    /**\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.addUploadProgressListener = function (listener) {\n        if (isDef(this.xhr_.upload)) {\n            this.xhr_.upload.addEventListener('progress', listener);\n        }\n    };\n    /**\r\n     * @override\r\n     */\n    NetworkXhrIo.prototype.removeUploadProgressListener = function (listener) {\n        if (isDef(this.xhr_.upload)) {\n            this.xhr_.upload.removeEventListener('progress', listener);\n        }\n    };\n    return NetworkXhrIo;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Factory-like class for creating XhrIo instances.\r\n */\nvar XhrIoPool = /** @class */function () {\n    function XhrIoPool() {}\n    XhrIoPool.prototype.createXhrIo = function () {\n        return new NetworkXhrIo();\n    };\n    return XhrIoPool;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Returns the Object resulting from parsing the given JSON, or null if the\r\n * given string does not represent a JSON object.\r\n */\nfunction jsonObjectOrNull(s) {\n    var obj;\n    try {\n        obj = JSON.parse(s);\n    } catch (e) {\n        return null;\n    }\n    if (isNonArrayObject(obj)) {\n        return obj;\n    } else {\n        return null;\n    }\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @struct\r\n */\nvar Location = /** @class */function () {\n    function Location(bucket, path) {\n        this.bucket = bucket;\n        this.path_ = path;\n    }\n    Object.defineProperty(Location.prototype, \"path\", {\n        get: function get() {\n            return this.path_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Location.prototype.fullServerUrl = function () {\n        var encode = encodeURIComponent;\n        return '/b/' + encode(this.bucket) + '/o/' + encode(this.path);\n    };\n    Location.prototype.bucketOnlyServerUrl = function () {\n        var encode = encodeURIComponent;\n        return '/b/' + encode(this.bucket) + '/o';\n    };\n    Location.makeFromBucketSpec = function (bucketString) {\n        var bucketLocation;\n        try {\n            bucketLocation = Location.makeFromUrl(bucketString);\n        } catch (e) {\n            // Not valid URL, use as-is. This lets you put bare bucket names in\n            // config.\n            return new Location(bucketString, '');\n        }\n        if (bucketLocation.path === '') {\n            return bucketLocation;\n        } else {\n            throw invalidDefaultBucket(bucketString);\n        }\n    };\n    Location.makeFromUrl = function (url) {\n        var location = null;\n        var bucketDomain = '([A-Za-z0-9.\\\\-_]+)';\n        function gsModify(loc) {\n            if (loc.path.charAt(loc.path.length - 1) === '/') {\n                loc.path_ = loc.path_.slice(0, -1);\n            }\n        }\n        var gsPath = '(/(.*))?$';\n        var path = '(/([^?#]*).*)?$';\n        var gsRegex = new RegExp('^gs://' + bucketDomain + gsPath, 'i');\n        var gsIndices = { bucket: 1, path: 3 };\n        function httpModify(loc) {\n            loc.path_ = decodeURIComponent(loc.path);\n        }\n        var version = 'v[A-Za-z0-9_]+';\n        var httpRegex = new RegExp('^https?://firebasestorage\\\\.googleapis\\\\.com/' + version + '/b/' + bucketDomain + '/o' + path, 'i');\n        var httpIndices = { bucket: 1, path: 3 };\n        var groups = [{ regex: gsRegex, indices: gsIndices, postModify: gsModify }, { regex: httpRegex, indices: httpIndices, postModify: httpModify }];\n        for (var i = 0; i < groups.length; i++) {\n            var group = groups[i];\n            var captures = group.regex.exec(url);\n            if (captures) {\n                var bucketValue = captures[group.indices.bucket];\n                var pathValue = captures[group.indices.path];\n                if (!pathValue) {\n                    pathValue = '';\n                }\n                location = new Location(bucketValue, pathValue);\n                group.postModify(location);\n                break;\n            }\n        }\n        if (location == null) {\n            throw invalidUrl(url);\n        }\n        return location;\n    };\n    return Location;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @fileoverview Contains helper methods for manipulating paths.\r\n */\n/**\r\n * @return Null if the path is already at the root.\r\n */\nfunction index_esm_parent(path) {\n    if (path.length == 0) {\n        return null;\n    }\n    var index = path.lastIndexOf('/');\n    if (index === -1) {\n        return '';\n    }\n    var newPath = path.slice(0, index);\n    return newPath;\n}\nfunction child(path, childPath) {\n    var canonicalChildPath = childPath.split('/').filter(function (component) {\n        return component.length > 0;\n    }).join('/');\n    if (path.length === 0) {\n        return canonicalChildPath;\n    } else {\n        return path + '/' + canonicalChildPath;\n    }\n}\n/**\r\n * Returns the last component of a path.\r\n * '/foo/bar' -> 'bar'\r\n * '/foo/bar/baz/' -> 'baz/'\r\n * '/a' -> 'a'\r\n */\nfunction lastComponent(path) {\n    var index = path.lastIndexOf('/', path.length - 2);\n    if (index === -1) {\n        return path;\n    } else {\n        return path.slice(index + 1);\n    }\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nfunction makeNormalUrl(urlPart) {\n    return domainBase + apiBaseUrl + urlPart;\n}\nfunction makeDownloadUrl(urlPart) {\n    return downloadBase + apiBaseUrl + urlPart;\n}\nfunction makeUploadUrl(urlPart) {\n    return domainBase + apiUploadBaseUrl + urlPart;\n}\nfunction makeQueryString(params) {\n    var encode = encodeURIComponent;\n    var queryPart = '?';\n    forEach(params, function (key, val) {\n        var nextPart = encode(key) + '=' + encode(val);\n        queryPart = queryPart + nextPart + '&';\n    });\n    // Chop off the extra '&' or '?' on the end\n    queryPart = queryPart.slice(0, -1);\n    return queryPart;\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nfunction noXform_(metadata, value) {\n    return value;\n}\n/**\r\n * @struct\r\n */\nvar Mapping = /** @class */function () {\n    function Mapping(server, opt_local, opt_writable, opt_xform) {\n        this.server = server;\n        this.local = opt_local || server;\n        this.writable = !!opt_writable;\n        this.xform = opt_xform || noXform_;\n    }\n    return Mapping;\n}();\nvar mappings_ = null;\nfunction xformPath(fullPath) {\n    var valid = isString(fullPath);\n    if (!valid || fullPath.length < 2) {\n        return fullPath;\n    } else {\n        fullPath = fullPath;\n        return lastComponent(fullPath);\n    }\n}\nfunction getMappings() {\n    if (mappings_) {\n        return mappings_;\n    }\n    var mappings = [];\n    mappings.push(new Mapping('bucket'));\n    mappings.push(new Mapping('generation'));\n    mappings.push(new Mapping('metageneration'));\n    mappings.push(new Mapping('name', 'fullPath', true));\n    function mappingsXformPath(metadata, fullPath) {\n        return xformPath(fullPath);\n    }\n    var nameMapping = new Mapping('name');\n    nameMapping.xform = mappingsXformPath;\n    mappings.push(nameMapping);\n    /**\r\n     * Coerces the second param to a number, if it is defined.\r\n     */\n    function xformSize(metadata, size) {\n        if (isDef(size)) {\n            return +size;\n        } else {\n            return size;\n        }\n    }\n    var sizeMapping = new Mapping('size');\n    sizeMapping.xform = xformSize;\n    mappings.push(sizeMapping);\n    mappings.push(new Mapping('timeCreated'));\n    mappings.push(new Mapping('updated'));\n    mappings.push(new Mapping('md5Hash', null, true));\n    mappings.push(new Mapping('cacheControl', null, true));\n    mappings.push(new Mapping('contentDisposition', null, true));\n    mappings.push(new Mapping('contentEncoding', null, true));\n    mappings.push(new Mapping('contentLanguage', null, true));\n    mappings.push(new Mapping('contentType', null, true));\n    mappings.push(new Mapping('metadata', 'customMetadata', true));\n    mappings_ = mappings;\n    return mappings_;\n}\nfunction addRef(metadata, authWrapper) {\n    function generateRef() {\n        var bucket = metadata['bucket'];\n        var path = metadata['fullPath'];\n        var loc = new Location(bucket, path);\n        return authWrapper.makeStorageReference(loc);\n    }\n    Object.defineProperty(metadata, 'ref', { get: generateRef });\n}\nfunction fromResource(authWrapper, resource, mappings) {\n    var metadata = {};\n    metadata['type'] = 'file';\n    var len = mappings.length;\n    for (var i = 0; i < len; i++) {\n        var mapping = mappings[i];\n        metadata[mapping.local] = mapping.xform(metadata, resource[mapping.server]);\n    }\n    addRef(metadata, authWrapper);\n    return metadata;\n}\nfunction fromResourceString(authWrapper, resourceString, mappings) {\n    var obj = jsonObjectOrNull(resourceString);\n    if (obj === null) {\n        return null;\n    }\n    var resource = obj;\n    return fromResource(authWrapper, resource, mappings);\n}\nfunction downloadUrlFromResourceString(metadata, resourceString) {\n    var obj = jsonObjectOrNull(resourceString);\n    if (obj === null) {\n        return null;\n    }\n    if (!isString(obj['downloadTokens'])) {\n        // This can happen if objects are uploaded through GCS and retrieved\n        // through list, so we don't want to throw an Error.\n        return null;\n    }\n    var tokens = obj['downloadTokens'];\n    if (tokens.length === 0) {\n        return null;\n    }\n    var encode = encodeURIComponent;\n    var tokensList = tokens.split(',');\n    var urls = tokensList.map(function (token) {\n        var bucket = metadata['bucket'];\n        var path = metadata['fullPath'];\n        var urlPart = '/b/' + encode(bucket) + '/o/' + encode(path);\n        var base = makeDownloadUrl(urlPart);\n        var queryString = makeQueryString({\n            alt: 'media',\n            token: token\n        });\n        return base + queryString;\n    });\n    return urls[0];\n}\nfunction toResourceString(metadata, mappings) {\n    var resource = {};\n    var len = mappings.length;\n    for (var i = 0; i < len; i++) {\n        var mapping = mappings[i];\n        if (mapping.writable) {\n            resource[mapping.server] = metadata[mapping.local];\n        }\n    }\n    return JSON.stringify(resource);\n}\nfunction metadataValidator(p) {\n    var validType = p && isObject(p);\n    if (!validType) {\n        throw 'Expected Metadata object.';\n    }\n    for (var key in p) {\n        var val = p[key];\n        if (key === 'customMetadata') {\n            if (!isObject(val)) {\n                throw 'Expected object for \\'customMetadata\\' mapping.';\n            }\n        } else {\n            if (isNonNullObject(val)) {\n                throw \"Mapping for '\" + key + \"' cannot be an object.\";\n            }\n        }\n    }\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @param name Name of the function.\r\n * @param specs Argument specs.\r\n * @param passed The actual arguments passed to the function.\r\n * @throws {fbs.Error} If the arguments are invalid.\r\n */\nfunction validate(name, specs, passed) {\n    var minArgs = specs.length;\n    var maxArgs = specs.length;\n    for (var i = 0; i < specs.length; i++) {\n        if (specs[i].optional) {\n            minArgs = i;\n            break;\n        }\n    }\n    var validLength = minArgs <= passed.length && passed.length <= maxArgs;\n    if (!validLength) {\n        throw invalidArgumentCount(minArgs, maxArgs, name, passed.length);\n    }\n    for (var i = 0; i < passed.length; i++) {\n        try {\n            specs[i].validator(passed[i]);\n        } catch (e) {\n            if (e instanceof Error) {\n                throw invalidArgument(i, name, e.message);\n            } else {\n                throw invalidArgument(i, name, e);\n            }\n        }\n    }\n}\n/**\r\n * @struct\r\n */\nvar ArgSpec = /** @class */function () {\n    function ArgSpec(validator, opt_optional) {\n        var self = this;\n        this.validator = function (p) {\n            if (self.optional && !isJustDef(p)) {\n                return;\n            }\n            validator(p);\n        };\n        this.optional = !!opt_optional;\n    }\n    return ArgSpec;\n}();\nfunction and_(v1, v2) {\n    return function (p) {\n        v1(p);\n        v2(p);\n    };\n}\nfunction stringSpec(opt_validator, opt_optional) {\n    function stringValidator(p) {\n        if (!isString(p)) {\n            throw 'Expected string.';\n        }\n    }\n    var validator;\n    if (opt_validator) {\n        validator = and_(stringValidator, opt_validator);\n    } else {\n        validator = stringValidator;\n    }\n    return new ArgSpec(validator, opt_optional);\n}\nfunction uploadDataSpec() {\n    function validator(p) {\n        var valid = p instanceof Uint8Array || p instanceof ArrayBuffer || isNativeBlobDefined() && p instanceof Blob;\n        if (!valid) {\n            throw 'Expected Blob or File.';\n        }\n    }\n    return new ArgSpec(validator);\n}\nfunction metadataSpec(opt_optional) {\n    return new ArgSpec(metadataValidator, opt_optional);\n}\nfunction nonNegativeNumberSpec() {\n    function validator(p) {\n        var valid = isNumber(p) && p >= 0;\n        if (!valid) {\n            throw 'Expected a number 0 or greater.';\n        }\n    }\n    return new ArgSpec(validator);\n}\nfunction looseObjectSpec(opt_validator, opt_optional) {\n    function validator(p) {\n        var isLooseObject = p === null || isDef(p) && p instanceof Object;\n        if (!isLooseObject) {\n            throw 'Expected an Object.';\n        }\n        if (opt_validator !== undefined && opt_validator !== null) {\n            opt_validator(p);\n        }\n    }\n    return new ArgSpec(validator, opt_optional);\n}\nfunction nullFunctionSpec(opt_optional) {\n    function validator(p) {\n        var valid = p === null || isFunction(p);\n        if (!valid) {\n            throw 'Expected a Function.';\n        }\n    }\n    return new ArgSpec(validator, opt_optional);\n}\n\nfunction getBlobBuilder() {\n    if (typeof BlobBuilder !== 'undefined') {\n        return BlobBuilder;\n    } else if (typeof WebKitBlobBuilder !== 'undefined') {\n        return WebKitBlobBuilder;\n    } else {\n        return undefined;\n    }\n}\n/**\r\n * Concatenates one or more values together and converts them to a Blob.\r\n *\r\n * @param var_args The values that will make up the resulting blob.\r\n * @return The blob.\r\n */\nfunction getBlob() {\n    var var_args = [];\n    for (var _i = 0; _i < arguments.length; _i++) {\n        var_args[_i] = arguments[_i];\n    }\n    var BlobBuilder = getBlobBuilder();\n    if (BlobBuilder !== undefined) {\n        var bb = new BlobBuilder();\n        for (var i = 0; i < var_args.length; i++) {\n            bb.append(var_args[i]);\n        }\n        return bb.getBlob();\n    } else {\n        if (isNativeBlobDefined()) {\n            return new Blob(var_args);\n        } else {\n            throw Error(\"This browser doesn't seem to support creating Blobs\");\n        }\n    }\n}\n/**\r\n * Slices the blob. The returned blob contains data from the start byte\r\n * (inclusive) till the end byte (exclusive). Negative indices cannot be used.\r\n *\r\n * @param blob The blob to be sliced.\r\n * @param start Index of the starting byte.\r\n * @param end Index of the ending byte.\r\n * @return The blob slice or null if not supported.\r\n */\nfunction sliceBlob(blob, start, end) {\n    if (blob.webkitSlice) {\n        return blob.webkitSlice(start, end);\n    } else if (blob.mozSlice) {\n        return blob.mozSlice(start, end);\n    } else if (blob.slice) {\n        return blob.slice(start, end);\n    }\n    return null;\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @param opt_elideCopy If true, doesn't copy mutable input data\r\n *     (e.g. Uint8Arrays). Pass true only if you know the objects will not be\r\n *     modified after this blob's construction.\r\n */\nvar FbsBlob = /** @class */function () {\n    function FbsBlob(data, opt_elideCopy) {\n        var size = 0;\n        var blobType = '';\n        if (isNativeBlob(data)) {\n            this.data_ = data;\n            size = data.size;\n            blobType = data.type;\n        } else if (data instanceof ArrayBuffer) {\n            if (opt_elideCopy) {\n                this.data_ = new Uint8Array(data);\n            } else {\n                this.data_ = new Uint8Array(data.byteLength);\n                this.data_.set(new Uint8Array(data));\n            }\n            size = this.data_.length;\n        } else if (data instanceof Uint8Array) {\n            if (opt_elideCopy) {\n                this.data_ = data;\n            } else {\n                this.data_ = new Uint8Array(data.length);\n                this.data_.set(data);\n            }\n            size = data.length;\n        }\n        this.size_ = size;\n        this.type_ = blobType;\n    }\n    FbsBlob.prototype.size = function () {\n        return this.size_;\n    };\n    FbsBlob.prototype.type = function () {\n        return this.type_;\n    };\n    FbsBlob.prototype.slice = function (startByte, endByte) {\n        if (isNativeBlob(this.data_)) {\n            var realBlob = this.data_;\n            var sliced = sliceBlob(realBlob, startByte, endByte);\n            if (sliced === null) {\n                return null;\n            }\n            return new FbsBlob(sliced);\n        } else {\n            var slice = new Uint8Array(this.data_.buffer, startByte, endByte - startByte);\n            return new FbsBlob(slice, true);\n        }\n    };\n    FbsBlob.getBlob = function () {\n        var var_args = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            var_args[_i] = arguments[_i];\n        }\n        if (isNativeBlobDefined()) {\n            var blobby = var_args.map(function (val) {\n                if (val instanceof FbsBlob) {\n                    return val.data_;\n                } else {\n                    return val;\n                }\n            });\n            return new FbsBlob(getBlob.apply(null, blobby));\n        } else {\n            var uint8Arrays = var_args.map(function (val) {\n                if (isString(val)) {\n                    return dataFromString(StringFormat.RAW, val).data;\n                } else {\n                    // Blobs don't exist, so this has to be a Uint8Array.\n                    return val.data_;\n                }\n            });\n            var finalLength_1 = 0;\n            uint8Arrays.forEach(function (array) {\n                finalLength_1 += array.byteLength;\n            });\n            var merged_1 = new Uint8Array(finalLength_1);\n            var index_1 = 0;\n            uint8Arrays.forEach(function (array) {\n                for (var i = 0; i < array.length; i++) {\n                    merged_1[index_1++] = array[i];\n                }\n            });\n            return new FbsBlob(merged_1, true);\n        }\n    };\n    FbsBlob.prototype.uploadData = function () {\n        return this.data_;\n    };\n    return FbsBlob;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Returns true if the object is contained in the array (compared with ===).\r\n * @template T\r\n */\nfunction contains$1(array, elem) {\n    return array.indexOf(elem) !== -1;\n}\n/**\r\n * Returns a shallow copy of the array or array-like object (e.g. arguments).\r\n * @template T\r\n */\nfunction clone$1(arraylike) {\n    return Array.prototype.slice.call(arraylike);\n}\n/**\r\n * Removes the given element from the given array, if it is contained.\r\n * Directly modifies the passed-in array.\r\n * @template T\r\n */\nfunction remove(array, elem) {\n    var i = array.indexOf(elem);\n    if (i !== -1) {\n        array.splice(i, 1);\n    }\n}\n\nvar RequestInfo = /** @class */function () {\n    function RequestInfo(url, method,\n    /**\r\n     * Returns the value with which to resolve the request's promise. Only called\r\n     * if the request is successful. Throw from this function to reject the\r\n     * returned Request's promise with the thrown error.\r\n     * Note: The XhrIo passed to this function may be reused after this callback\r\n     * returns. Do not keep a reference to it in any way.\r\n     */\n    handler, timeout) {\n        this.url = url;\n        this.method = method;\n        this.handler = handler;\n        this.timeout = timeout;\n        this.urlParams = {};\n        this.headers = {};\n        this.body = null;\n        this.errorHandler = null;\n        /**\r\n         * Called with the current number of bytes uploaded and total size (-1 if not\r\n         * computable) of the request body (i.e. used to report upload progress).\r\n         */\n        this.progressCallback = null;\n        this.successCodes = [200];\n        this.additionalRetryCodes = [];\n    }\n    return RequestInfo;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Throws the UNKNOWN FirebaseStorageError if cndn is false.\r\n */\nfunction handlerCheck(cndn) {\n    if (!cndn) {\n        throw unknown();\n    }\n}\nfunction metadataHandler(authWrapper, mappings) {\n    function handler(xhr, text) {\n        var metadata = fromResourceString(authWrapper, text, mappings);\n        handlerCheck(metadata !== null);\n        return metadata;\n    }\n    return handler;\n}\nfunction downloadUrlHandler(authWrapper, mappings) {\n    function handler(xhr, text) {\n        var metadata = fromResourceString(authWrapper, text, mappings);\n        handlerCheck(metadata !== null);\n        return downloadUrlFromResourceString(metadata, text);\n    }\n    return handler;\n}\nfunction sharedErrorHandler(location) {\n    function errorHandler(xhr, err) {\n        var newErr;\n        if (xhr.getStatus() === 401) {\n            newErr = unauthenticated();\n        } else {\n            if (xhr.getStatus() === 402) {\n                newErr = quotaExceeded(location.bucket);\n            } else {\n                if (xhr.getStatus() === 403) {\n                    newErr = unauthorized(location.path);\n                } else {\n                    newErr = err;\n                }\n            }\n        }\n        newErr.setServerResponseProp(err.serverResponseProp());\n        return newErr;\n    }\n    return errorHandler;\n}\nfunction objectErrorHandler(location) {\n    var shared = sharedErrorHandler(location);\n    function errorHandler(xhr, err) {\n        var newErr = shared(xhr, err);\n        if (xhr.getStatus() === 404) {\n            newErr = objectNotFound(location.path);\n        }\n        newErr.setServerResponseProp(err.serverResponseProp());\n        return newErr;\n    }\n    return errorHandler;\n}\nfunction getMetadata(authWrapper, location, mappings) {\n    var urlPart = location.fullServerUrl();\n    var url = makeNormalUrl(urlPart);\n    var method = 'GET';\n    var timeout = authWrapper.maxOperationRetryTime();\n    var requestInfo = new RequestInfo(url, method, metadataHandler(authWrapper, mappings), timeout);\n    requestInfo.errorHandler = objectErrorHandler(location);\n    return requestInfo;\n}\nfunction getDownloadUrl(authWrapper, location, mappings) {\n    var urlPart = location.fullServerUrl();\n    var url = makeNormalUrl(urlPart);\n    var method = 'GET';\n    var timeout = authWrapper.maxOperationRetryTime();\n    var requestInfo = new RequestInfo(url, method, downloadUrlHandler(authWrapper, mappings), timeout);\n    requestInfo.errorHandler = objectErrorHandler(location);\n    return requestInfo;\n}\nfunction updateMetadata(authWrapper, location, metadata, mappings) {\n    var urlPart = location.fullServerUrl();\n    var url = makeNormalUrl(urlPart);\n    var method = 'PATCH';\n    var body = toResourceString(metadata, mappings);\n    var headers = { 'Content-Type': 'application/json; charset=utf-8' };\n    var timeout = authWrapper.maxOperationRetryTime();\n    var requestInfo = new RequestInfo(url, method, metadataHandler(authWrapper, mappings), timeout);\n    requestInfo.headers = headers;\n    requestInfo.body = body;\n    requestInfo.errorHandler = objectErrorHandler(location);\n    return requestInfo;\n}\nfunction deleteObject(authWrapper, location) {\n    var urlPart = location.fullServerUrl();\n    var url = makeNormalUrl(urlPart);\n    var method = 'DELETE';\n    var timeout = authWrapper.maxOperationRetryTime();\n    function handler(xhr, text) {}\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\n    requestInfo.successCodes = [200, 204];\n    requestInfo.errorHandler = objectErrorHandler(location);\n    return requestInfo;\n}\nfunction determineContentType_(metadata, blob) {\n    return metadata && metadata['contentType'] || blob && blob.type() || 'application/octet-stream';\n}\nfunction metadataForUpload_(location, blob, opt_metadata) {\n    var metadata = clone(opt_metadata);\n    metadata['fullPath'] = location.path;\n    metadata['size'] = blob.size();\n    if (!metadata['contentType']) {\n        metadata['contentType'] = determineContentType_(null, blob);\n    }\n    return metadata;\n}\nfunction multipartUpload(authWrapper, location, mappings, blob, opt_metadata) {\n    var urlPart = location.bucketOnlyServerUrl();\n    var headers = {\n        'X-Goog-Upload-Protocol': 'multipart'\n    };\n    function genBoundary() {\n        var str = '';\n        for (var i = 0; i < 2; i++) {\n            str = str + Math.random().toString().slice(2);\n        }\n        return str;\n    }\n    var boundary = genBoundary();\n    headers['Content-Type'] = 'multipart/related; boundary=' + boundary;\n    var metadata = metadataForUpload_(location, blob, opt_metadata);\n    var metadataString = toResourceString(metadata, mappings);\n    var preBlobPart = '--' + boundary + '\\r\\n' + 'Content-Type: application/json; charset=utf-8\\r\\n\\r\\n' + metadataString + '\\r\\n--' + boundary + '\\r\\n' + 'Content-Type: ' + metadata['contentType'] + '\\r\\n\\r\\n';\n    var postBlobPart = '\\r\\n--' + boundary + '--';\n    var body = FbsBlob.getBlob(preBlobPart, blob, postBlobPart);\n    if (body === null) {\n        throw cannotSliceBlob();\n    }\n    var urlParams = { name: metadata['fullPath'] };\n    var url = makeUploadUrl(urlPart);\n    var method = 'POST';\n    var timeout = authWrapper.maxUploadRetryTime();\n    var requestInfo = new RequestInfo(url, method, metadataHandler(authWrapper, mappings), timeout);\n    requestInfo.urlParams = urlParams;\n    requestInfo.headers = headers;\n    requestInfo.body = body.uploadData();\n    requestInfo.errorHandler = sharedErrorHandler(location);\n    return requestInfo;\n}\n/**\r\n * @param current The number of bytes that have been uploaded so far.\r\n * @param total The total number of bytes in the upload.\r\n * @param opt_finalized True if the server has finished the upload.\r\n * @param opt_metadata The upload metadata, should\r\n *     only be passed if opt_finalized is true.\r\n * @struct\r\n */\nvar ResumableUploadStatus = /** @class */function () {\n    function ResumableUploadStatus(current, total, finalized, metadata) {\n        this.current = current;\n        this.total = total;\n        this.finalized = !!finalized;\n        this.metadata = metadata || null;\n    }\n    return ResumableUploadStatus;\n}();\nfunction checkResumeHeader_(xhr, opt_allowed) {\n    var status;\n    try {\n        status = xhr.getResponseHeader('X-Goog-Upload-Status');\n    } catch (e) {\n        handlerCheck(false);\n    }\n    var allowed = opt_allowed || ['active'];\n    handlerCheck(contains$1(allowed, status));\n    return status;\n}\nfunction createResumableUpload(authWrapper, location, mappings, blob, opt_metadata) {\n    var urlPart = location.bucketOnlyServerUrl();\n    var metadata = metadataForUpload_(location, blob, opt_metadata);\n    var urlParams = { name: metadata['fullPath'] };\n    var url = makeUploadUrl(urlPart);\n    var method = 'POST';\n    var headers = {\n        'X-Goog-Upload-Protocol': 'resumable',\n        'X-Goog-Upload-Command': 'start',\n        'X-Goog-Upload-Header-Content-Length': blob.size(),\n        'X-Goog-Upload-Header-Content-Type': metadata['contentType'],\n        'Content-Type': 'application/json; charset=utf-8'\n    };\n    var body = toResourceString(metadata, mappings);\n    var timeout = authWrapper.maxUploadRetryTime();\n    function handler(xhr, text) {\n        checkResumeHeader_(xhr);\n        var url;\n        try {\n            url = xhr.getResponseHeader('X-Goog-Upload-URL');\n        } catch (e) {\n            handlerCheck(false);\n        }\n        handlerCheck(isString(url));\n        return url;\n    }\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\n    requestInfo.urlParams = urlParams;\n    requestInfo.headers = headers;\n    requestInfo.body = body;\n    requestInfo.errorHandler = sharedErrorHandler(location);\n    return requestInfo;\n}\n/**\r\n * @param url From a call to fbs.requests.createResumableUpload.\r\n */\nfunction getResumableUploadStatus(authWrapper, location, url, blob) {\n    var headers = { 'X-Goog-Upload-Command': 'query' };\n    function handler(xhr, text) {\n        var status = checkResumeHeader_(xhr, ['active', 'final']);\n        var sizeString;\n        try {\n            sizeString = xhr.getResponseHeader('X-Goog-Upload-Size-Received');\n        } catch (e) {\n            handlerCheck(false);\n        }\n        var size = parseInt(sizeString, 10);\n        handlerCheck(!isNaN(size));\n        return new ResumableUploadStatus(size, blob.size(), status === 'final');\n    }\n    var method = 'POST';\n    var timeout = authWrapper.maxUploadRetryTime();\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\n    requestInfo.headers = headers;\n    requestInfo.errorHandler = sharedErrorHandler(location);\n    return requestInfo;\n}\n/**\r\n * Any uploads via the resumable upload API must transfer a number of bytes\r\n * that is a multiple of this number.\r\n */\nvar resumableUploadChunkSize = 256 * 1024;\n/**\r\n * @param url From a call to fbs.requests.createResumableUpload.\r\n * @param chunkSize Number of bytes to upload.\r\n * @param opt_status The previous status.\r\n *     If not passed or null, we start from the beginning.\r\n * @throws fbs.Error If the upload is already complete, the passed in status\r\n *     has a final size inconsistent with the blob, or the blob cannot be sliced\r\n *     for upload.\r\n */\nfunction continueResumableUpload(location, authWrapper, url, blob, chunkSize, mappings, opt_status, opt_progressCallback) {\n    // TODO(andysoto): standardize on internal asserts\n    // assert(!(opt_status && opt_status.finalized));\n    var status = new ResumableUploadStatus(0, 0);\n    if (opt_status) {\n        status.current = opt_status.current;\n        status.total = opt_status.total;\n    } else {\n        status.current = 0;\n        status.total = blob.size();\n    }\n    if (blob.size() !== status.total) {\n        throw serverFileWrongSize();\n    }\n    var bytesLeft = status.total - status.current;\n    var bytesToUpload = bytesLeft;\n    if (chunkSize > 0) {\n        bytesToUpload = Math.min(bytesToUpload, chunkSize);\n    }\n    var startByte = status.current;\n    var endByte = startByte + bytesToUpload;\n    var uploadCommand = bytesToUpload === bytesLeft ? 'upload, finalize' : 'upload';\n    var headers = {\n        'X-Goog-Upload-Command': uploadCommand,\n        'X-Goog-Upload-Offset': status.current\n    };\n    var body = blob.slice(startByte, endByte);\n    if (body === null) {\n        throw cannotSliceBlob();\n    }\n    function handler(xhr, text) {\n        // TODO(andysoto): Verify the MD5 of each uploaded range:\n        // the 'x-range-md5' header comes back with status code 308 responses.\n        // We'll only be able to bail out though, because you can't re-upload a\n        // range that you previously uploaded.\n        var uploadStatus = checkResumeHeader_(xhr, ['active', 'final']);\n        var newCurrent = status.current + bytesToUpload;\n        var size = blob.size();\n        var metadata;\n        if (uploadStatus === 'final') {\n            metadata = metadataHandler(authWrapper, mappings)(xhr, text);\n        } else {\n            metadata = null;\n        }\n        return new ResumableUploadStatus(newCurrent, size, uploadStatus === 'final', metadata);\n    }\n    var method = 'POST';\n    var timeout = authWrapper.maxUploadRetryTime();\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\n    requestInfo.headers = headers;\n    requestInfo.body = body.uploadData();\n    requestInfo.progressCallback = opt_progressCallback || null;\n    requestInfo.errorHandler = sharedErrorHandler(location);\n    return requestInfo;\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @struct\r\n */\nvar Observer = /** @class */function () {\n    function Observer(nextOrObserver, opt_error, opt_complete) {\n        var asFunctions = isFunction(nextOrObserver) || isDef(opt_error) || isDef(opt_complete);\n        if (asFunctions) {\n            this.next = nextOrObserver;\n            this.error = opt_error || null;\n            this.complete = opt_complete || null;\n        } else {\n            var observer = nextOrObserver;\n            this.next = observer.next || null;\n            this.error = observer.error || null;\n            this.complete = observer.complete || null;\n        }\n    }\n    return Observer;\n}();\n\nvar UploadTaskSnapshot = /** @class */function () {\n    function UploadTaskSnapshot(bytesTransferred, totalBytes, state, metadata, task, ref) {\n        this.bytesTransferred = bytesTransferred;\n        this.totalBytes = totalBytes;\n        this.state = state;\n        this.metadata = metadata;\n        this.task = task;\n        this.ref = ref;\n    }\n    return UploadTaskSnapshot;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Returns a function that invokes f with its arguments asynchronously as a\r\n * microtask, i.e. as soon as possible after the current script returns back\r\n * into browser code.\r\n */\nfunction index_esm_async(f) {\n    return function () {\n        var argsToForward = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            argsToForward[_i] = arguments[_i];\n        }\n        resolve(true).then(function () {\n            f.apply(null, argsToForward);\n        });\n    };\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Represents a blob being uploaded. Can be used to pause/resume/cancel the\r\n * upload and manage callbacks for various events.\r\n */\nvar UploadTask = /** @class */function () {\n    /**\r\n     * @param ref The firebaseStorage.Reference object this task came\r\n     *     from, untyped to avoid cyclic dependencies.\r\n     * @param blob The blob to upload.\r\n     */\n    function UploadTask(ref, authWrapper, location, mappings, blob, metadata) {\n        if (metadata === void 0) {\n            metadata = null;\n        }\n        var _this = this;\n        this.transferred_ = 0;\n        this.needToFetchStatus_ = false;\n        this.needToFetchMetadata_ = false;\n        this.observers_ = [];\n        this.error_ = null;\n        this.uploadUrl_ = null;\n        this.request_ = null;\n        this.chunkMultiplier_ = 1;\n        this.resolve_ = null;\n        this.reject_ = null;\n        this.ref_ = ref;\n        this.authWrapper_ = authWrapper;\n        this.location_ = location;\n        this.blob_ = blob;\n        this.metadata_ = metadata;\n        this.mappings_ = mappings;\n        this.resumable_ = this.shouldDoResumable_(this.blob_);\n        this.state_ = InternalTaskState.RUNNING;\n        this.errorHandler_ = function (error) {\n            _this.request_ = null;\n            _this.chunkMultiplier_ = 1;\n            if (error.codeEquals(Code.CANCELED)) {\n                _this.needToFetchStatus_ = true;\n                _this.completeTransitions_();\n            } else {\n                _this.error_ = error;\n                _this.transition_(InternalTaskState.ERROR);\n            }\n        };\n        this.metadataErrorHandler_ = function (error) {\n            _this.request_ = null;\n            if (error.codeEquals(Code.CANCELED)) {\n                _this.completeTransitions_();\n            } else {\n                _this.error_ = error;\n                _this.transition_(InternalTaskState.ERROR);\n            }\n        };\n        this.promise_ = make(function (resolve, reject) {\n            _this.resolve_ = resolve;\n            _this.reject_ = reject;\n            _this.start_();\n        });\n        // Prevent uncaught rejections on the internal promise from bubbling out\n        // to the top level with a dummy handler.\n        this.promise_.then(null, function () {});\n    }\n    UploadTask.prototype.makeProgressCallback_ = function () {\n        var _this = this;\n        var sizeBefore = this.transferred_;\n        return function (loaded, total) {\n            _this.updateProgress_(sizeBefore + loaded);\n        };\n    };\n    UploadTask.prototype.shouldDoResumable_ = function (blob) {\n        return blob.size() > 256 * 1024;\n    };\n    UploadTask.prototype.start_ = function () {\n        if (this.state_ !== InternalTaskState.RUNNING) {\n            // This can happen if someone pauses us in a resume callback, for example.\n            return;\n        }\n        if (this.request_ !== null) {\n            return;\n        }\n        if (this.resumable_) {\n            if (this.uploadUrl_ === null) {\n                this.createResumable_();\n            } else {\n                if (this.needToFetchStatus_) {\n                    this.fetchStatus_();\n                } else {\n                    if (this.needToFetchMetadata_) {\n                        // Happens if we miss the metadata on upload completion.\n                        this.fetchMetadata_();\n                    } else {\n                        this.continueUpload_();\n                    }\n                }\n            }\n        } else {\n            this.oneShotUpload_();\n        }\n    };\n    UploadTask.prototype.resolveToken_ = function (callback) {\n        var _this = this;\n        this.authWrapper_.getAuthToken().then(function (authToken) {\n            switch (_this.state_) {\n                case InternalTaskState.RUNNING:\n                    callback(authToken);\n                    break;\n                case InternalTaskState.CANCELING:\n                    _this.transition_(InternalTaskState.CANCELED);\n                    break;\n                case InternalTaskState.PAUSING:\n                    _this.transition_(InternalTaskState.PAUSED);\n                    break;\n                default:\n            }\n        });\n    };\n    // TODO(andysoto): assert false\n    UploadTask.prototype.createResumable_ = function () {\n        var _this = this;\n        this.resolveToken_(function (authToken) {\n            var requestInfo = createResumableUpload(_this.authWrapper_, _this.location_, _this.mappings_, _this.blob_, _this.metadata_);\n            var createRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\n            _this.request_ = createRequest;\n            createRequest.getPromise().then(function (url) {\n                _this.request_ = null;\n                _this.uploadUrl_ = url;\n                _this.needToFetchStatus_ = false;\n                _this.completeTransitions_();\n            }, _this.errorHandler_);\n        });\n    };\n    UploadTask.prototype.fetchStatus_ = function () {\n        var _this = this;\n        // TODO(andysoto): assert(this.uploadUrl_ !== null);\n        var url = this.uploadUrl_;\n        this.resolveToken_(function (authToken) {\n            var requestInfo = getResumableUploadStatus(_this.authWrapper_, _this.location_, url, _this.blob_);\n            var statusRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\n            _this.request_ = statusRequest;\n            statusRequest.getPromise().then(function (status) {\n                status = status;\n                _this.request_ = null;\n                _this.updateProgress_(status.current);\n                _this.needToFetchStatus_ = false;\n                if (status.finalized) {\n                    _this.needToFetchMetadata_ = true;\n                }\n                _this.completeTransitions_();\n            }, _this.errorHandler_);\n        });\n    };\n    UploadTask.prototype.continueUpload_ = function () {\n        var _this = this;\n        var chunkSize = resumableUploadChunkSize * this.chunkMultiplier_;\n        var status = new ResumableUploadStatus(this.transferred_, this.blob_.size());\n        // TODO(andysoto): assert(this.uploadUrl_ !== null);\n        var url = this.uploadUrl_;\n        this.resolveToken_(function (authToken) {\n            var requestInfo;\n            try {\n                requestInfo = continueResumableUpload(_this.location_, _this.authWrapper_, url, _this.blob_, chunkSize, _this.mappings_, status, _this.makeProgressCallback_());\n            } catch (e) {\n                _this.error_ = e;\n                _this.transition_(InternalTaskState.ERROR);\n                return;\n            }\n            var uploadRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\n            _this.request_ = uploadRequest;\n            uploadRequest.getPromise().then(function (newStatus) {\n                _this.increaseMultiplier_();\n                _this.request_ = null;\n                _this.updateProgress_(newStatus.current);\n                if (newStatus.finalized) {\n                    _this.metadata_ = newStatus.metadata;\n                    _this.transition_(InternalTaskState.SUCCESS);\n                } else {\n                    _this.completeTransitions_();\n                }\n            }, _this.errorHandler_);\n        });\n    };\n    UploadTask.prototype.increaseMultiplier_ = function () {\n        var currentSize = resumableUploadChunkSize * this.chunkMultiplier_;\n        // Max chunk size is 32M.\n        if (currentSize < 32 * 1024 * 1024) {\n            this.chunkMultiplier_ *= 2;\n        }\n    };\n    UploadTask.prototype.fetchMetadata_ = function () {\n        var _this = this;\n        this.resolveToken_(function (authToken) {\n            var requestInfo = getMetadata(_this.authWrapper_, _this.location_, _this.mappings_);\n            var metadataRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\n            _this.request_ = metadataRequest;\n            metadataRequest.getPromise().then(function (metadata) {\n                _this.request_ = null;\n                _this.metadata_ = metadata;\n                _this.transition_(InternalTaskState.SUCCESS);\n            }, _this.metadataErrorHandler_);\n        });\n    };\n    UploadTask.prototype.oneShotUpload_ = function () {\n        var _this = this;\n        this.resolveToken_(function (authToken) {\n            var requestInfo = multipartUpload(_this.authWrapper_, _this.location_, _this.mappings_, _this.blob_, _this.metadata_);\n            var multipartRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\n            _this.request_ = multipartRequest;\n            multipartRequest.getPromise().then(function (metadata) {\n                _this.request_ = null;\n                _this.metadata_ = metadata;\n                _this.updateProgress_(_this.blob_.size());\n                _this.transition_(InternalTaskState.SUCCESS);\n            }, _this.errorHandler_);\n        });\n    };\n    UploadTask.prototype.updateProgress_ = function (transferred) {\n        var old = this.transferred_;\n        this.transferred_ = transferred;\n        // A progress update can make the \"transferred\" value smaller (e.g. a\n        // partial upload not completed by server, after which the \"transferred\"\n        // value may reset to the value at the beginning of the request).\n        if (this.transferred_ !== old) {\n            this.notifyObservers_();\n        }\n    };\n    UploadTask.prototype.transition_ = function (state) {\n        if (this.state_ === state) {\n            return;\n        }\n        switch (state) {\n            case InternalTaskState.CANCELING:\n                // TODO(andysoto):\n                // assert(this.state_ === InternalTaskState.RUNNING ||\n                //        this.state_ === InternalTaskState.PAUSING);\n                this.state_ = state;\n                if (this.request_ !== null) {\n                    this.request_.cancel();\n                }\n                break;\n            case InternalTaskState.PAUSING:\n                // TODO(andysoto):\n                // assert(this.state_ === InternalTaskState.RUNNING);\n                this.state_ = state;\n                if (this.request_ !== null) {\n                    this.request_.cancel();\n                }\n                break;\n            case InternalTaskState.RUNNING:\n                // TODO(andysoto):\n                // assert(this.state_ === InternalTaskState.PAUSED ||\n                //        this.state_ === InternalTaskState.PAUSING);\n                var wasPaused = this.state_ === InternalTaskState.PAUSED;\n                this.state_ = state;\n                if (wasPaused) {\n                    this.notifyObservers_();\n                    this.start_();\n                }\n                break;\n            case InternalTaskState.PAUSED:\n                // TODO(andysoto):\n                // assert(this.state_ === InternalTaskState.PAUSING);\n                this.state_ = state;\n                this.notifyObservers_();\n                break;\n            case InternalTaskState.CANCELED:\n                // TODO(andysoto):\n                // assert(this.state_ === InternalTaskState.PAUSED ||\n                //        this.state_ === InternalTaskState.CANCELING);\n                this.error_ = canceled();\n                this.state_ = state;\n                this.notifyObservers_();\n                break;\n            case InternalTaskState.ERROR:\n                // TODO(andysoto):\n                // assert(this.state_ === InternalTaskState.RUNNING ||\n                //        this.state_ === InternalTaskState.PAUSING ||\n                //        this.state_ === InternalTaskState.CANCELING);\n                this.state_ = state;\n                this.notifyObservers_();\n                break;\n            case InternalTaskState.SUCCESS:\n                // TODO(andysoto):\n                // assert(this.state_ === InternalTaskState.RUNNING ||\n                //        this.state_ === InternalTaskState.PAUSING ||\n                //        this.state_ === InternalTaskState.CANCELING);\n                this.state_ = state;\n                this.notifyObservers_();\n                break;\n        }\n    };\n    UploadTask.prototype.completeTransitions_ = function () {\n        switch (this.state_) {\n            case InternalTaskState.PAUSING:\n                this.transition_(InternalTaskState.PAUSED);\n                break;\n            case InternalTaskState.CANCELING:\n                this.transition_(InternalTaskState.CANCELED);\n                break;\n            case InternalTaskState.RUNNING:\n                this.start_();\n                break;\n            default:\n                // TODO(andysoto): assert(false);\n                break;\n        }\n    };\n    Object.defineProperty(UploadTask.prototype, \"snapshot\", {\n        get: function get() {\n            var externalState = taskStateFromInternalTaskState(this.state_);\n            return new UploadTaskSnapshot(this.transferred_, this.blob_.size(), externalState, this.metadata_, this, this.ref_);\n        },\n        enumerable: true,\n        configurable: true\n    });\n    /**\r\n     * Adds a callback for an event.\r\n     * @param type The type of event to listen for.\r\n     */\n    UploadTask.prototype.on = function (type, nextOrObserver, error, completed) {\n        if (nextOrObserver === void 0) {\n            nextOrObserver = undefined;\n        }\n        if (error === void 0) {\n            error = undefined;\n        }\n        if (completed === void 0) {\n            completed = undefined;\n        }\n        function typeValidator(_p) {\n            if (type !== TaskEvent.STATE_CHANGED) {\n                throw \"Expected one of the event types: [\" + TaskEvent.STATE_CHANGED + \"].\";\n            }\n        }\n        var nextOrObserverMessage = 'Expected a function or an Object with one of ' + '`next`, `error`, `complete` properties.';\n        var nextValidator = nullFunctionSpec(true).validator;\n        var observerValidator = looseObjectSpec(null, true).validator;\n        function nextOrObserverValidator(p) {\n            try {\n                nextValidator(p);\n                return;\n            } catch (e) {}\n            try {\n                observerValidator(p);\n                var anyDefined = isJustDef(p['next']) || isJustDef(p['error']) || isJustDef(p['complete']);\n                if (!anyDefined) {\n                    throw '';\n                }\n                return;\n            } catch (e) {\n                throw nextOrObserverMessage;\n            }\n        }\n        var specs = [stringSpec(typeValidator), looseObjectSpec(nextOrObserverValidator, true), nullFunctionSpec(true), nullFunctionSpec(true)];\n        validate('on', specs, arguments);\n        var self = this;\n        function makeBinder(specs) {\n            function binder(nextOrObserver, error, opt_complete) {\n                if (specs !== null) {\n                    validate('on', specs, arguments);\n                }\n                var observer = new Observer(nextOrObserver, error, completed);\n                self.addObserver_(observer);\n                return function () {\n                    self.removeObserver_(observer);\n                };\n            }\n            return binder;\n        }\n        function binderNextOrObserverValidator(p) {\n            if (p === null) {\n                throw nextOrObserverMessage;\n            }\n            nextOrObserverValidator(p);\n        }\n        var binderSpecs = [looseObjectSpec(binderNextOrObserverValidator), nullFunctionSpec(true), nullFunctionSpec(true)];\n        var typeOnly = !(isJustDef(nextOrObserver) || isJustDef(error) || isJustDef(completed));\n        if (typeOnly) {\n            return makeBinder(binderSpecs);\n        } else {\n            return makeBinder(null)(nextOrObserver, error, completed);\n        }\n    };\n    /**\r\n     * This object behaves like a Promise, and resolves with its snapshot data\r\n     * when the upload completes.\r\n     * @param onFulfilled The fulfillment callback. Promise chaining works as normal.\r\n     * @param onRejected The rejection callback.\r\n     */\n    UploadTask.prototype.then = function (onFulfilled, onRejected) {\n        // These casts are needed so that TypeScript can infer the types of the\n        // resulting Promise.\n        return this.promise_.then(onFulfilled, onRejected);\n    };\n    /**\r\n     * Equivalent to calling `then(null, onRejected)`.\r\n     */\n    UploadTask.prototype.catch = function (onRejected) {\n        return this.then(null, onRejected);\n    };\n    /**\r\n     * Adds the given observer.\r\n     */\n    UploadTask.prototype.addObserver_ = function (observer) {\n        this.observers_.push(observer);\n        this.notifyObserver_(observer);\n    };\n    /**\r\n     * Removes the given observer.\r\n     */\n    UploadTask.prototype.removeObserver_ = function (observer) {\n        remove(this.observers_, observer);\n    };\n    UploadTask.prototype.notifyObservers_ = function () {\n        var _this = this;\n        this.finishPromise_();\n        var observers = clone$1(this.observers_);\n        observers.forEach(function (observer) {\n            _this.notifyObserver_(observer);\n        });\n    };\n    UploadTask.prototype.finishPromise_ = function () {\n        if (this.resolve_ !== null) {\n            var triggered = true;\n            switch (taskStateFromInternalTaskState(this.state_)) {\n                case TaskState.SUCCESS:\n                    index_esm_async(this.resolve_.bind(null, this.snapshot))();\n                    break;\n                case TaskState.CANCELED:\n                case TaskState.ERROR:\n                    var toCall = this.reject_;\n                    index_esm_async(toCall.bind(null, this.error_))();\n                    break;\n                default:\n                    triggered = false;\n                    break;\n            }\n            if (triggered) {\n                this.resolve_ = null;\n                this.reject_ = null;\n            }\n        }\n    };\n    UploadTask.prototype.notifyObserver_ = function (observer) {\n        var externalState = taskStateFromInternalTaskState(this.state_);\n        switch (externalState) {\n            case TaskState.RUNNING:\n            case TaskState.PAUSED:\n                if (observer.next !== null) {\n                    index_esm_async(observer.next.bind(observer, this.snapshot))();\n                }\n                break;\n            case TaskState.SUCCESS:\n                if (observer.complete !== null) {\n                    index_esm_async(observer.complete.bind(observer))();\n                }\n                break;\n            case TaskState.CANCELED:\n            case TaskState.ERROR:\n                if (observer.error !== null) {\n                    index_esm_async(observer.error.bind(observer, this.error_))();\n                }\n                break;\n            default:\n                // TODO(andysoto): assert(false);\n                if (observer.error !== null) {\n                    index_esm_async(observer.error.bind(observer, this.error_))();\n                }\n        }\n    };\n    /**\r\n     * Resumes a paused task. Has no effect on a currently running or failed task.\r\n     * @return True if the operation took effect, false if ignored.\r\n     */\n    UploadTask.prototype.resume = function () {\n        validate('resume', [], arguments);\n        var valid = this.state_ === InternalTaskState.PAUSED || this.state_ === InternalTaskState.PAUSING;\n        if (valid) {\n            this.transition_(InternalTaskState.RUNNING);\n        }\n        return valid;\n    };\n    /**\r\n     * Pauses a currently running task. Has no effect on a paused or failed task.\r\n     * @return True if the operation took effect, false if ignored.\r\n     */\n    UploadTask.prototype.pause = function () {\n        validate('pause', [], arguments);\n        var valid = this.state_ === InternalTaskState.RUNNING;\n        if (valid) {\n            this.transition_(InternalTaskState.PAUSING);\n        }\n        return valid;\n    };\n    /**\r\n     * Cancels a currently running or paused task. Has no effect on a complete or\r\n     * failed task.\r\n     * @return True if the operation took effect, false if ignored.\r\n     */\n    UploadTask.prototype.cancel = function () {\n        validate('cancel', [], arguments);\n        var valid = this.state_ === InternalTaskState.RUNNING || this.state_ === InternalTaskState.PAUSING;\n        if (valid) {\n            this.transition_(InternalTaskState.CANCELING);\n        }\n        return valid;\n    };\n    return UploadTask;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Provides methods to interact with a bucket in the Firebase Storage service.\r\n * @param location An fbs.location, or the URL at\r\n *     which to base this object, in one of the following forms:\r\n *         gs://<bucket>/<object-path>\r\n *         http[s]://firebasestorage.googleapis.com/\r\n *                     <api-version>/b/<bucket>/o/<object-path>\r\n *     Any query or fragment strings will be ignored in the http[s]\r\n *     format. If no value is passed, the storage object will use a URL based on\r\n *     the project ID of the base firebase.App instance.\r\n */\nvar Reference = /** @class */function () {\n    function Reference(authWrapper, location) {\n        this.authWrapper = authWrapper;\n        if (location instanceof Location) {\n            this.location = location;\n        } else {\n            this.location = Location.makeFromUrl(location);\n        }\n    }\n    /**\r\n     * @return The URL for the bucket and path this object references,\r\n     *     in the form gs://<bucket>/<object-path>\r\n     * @override\r\n     */\n    Reference.prototype.toString = function () {\n        validate('toString', [], arguments);\n        return 'gs://' + this.location.bucket + '/' + this.location.path;\n    };\n    Reference.prototype.newRef = function (authWrapper, location) {\n        return new Reference(authWrapper, location);\n    };\n    Reference.prototype.mappings = function () {\n        return getMappings();\n    };\n    /**\r\n     * @return A reference to the object obtained by\r\n     *     appending childPath, removing any duplicate, beginning, or trailing\r\n     *     slashes.\r\n     */\n    Reference.prototype.child = function (childPath) {\n        validate('child', [stringSpec()], arguments);\n        var newPath = child(this.location.path, childPath);\n        var location = new Location(this.location.bucket, newPath);\n        return this.newRef(this.authWrapper, location);\n    };\n    Object.defineProperty(Reference.prototype, \"parent\", {\n        /**\r\n         * @return A reference to the parent of the\r\n         *     current object, or null if the current object is the root.\r\n         */\n        get: function get() {\n            var newPath = index_esm_parent(this.location.path);\n            if (newPath === null) {\n                return null;\n            }\n            var location = new Location(this.location.bucket, newPath);\n            return this.newRef(this.authWrapper, location);\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(Reference.prototype, \"root\", {\n        /**\r\n         * @return An reference to the root of this\r\n         *     object's bucket.\r\n         */\n        get: function get() {\n            var location = new Location(this.location.bucket, '');\n            return this.newRef(this.authWrapper, location);\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(Reference.prototype, \"bucket\", {\n        get: function get() {\n            return this.location.bucket;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(Reference.prototype, \"fullPath\", {\n        get: function get() {\n            return this.location.path;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(Reference.prototype, \"name\", {\n        get: function get() {\n            return lastComponent(this.location.path);\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(Reference.prototype, \"storage\", {\n        get: function get() {\n            return this.authWrapper.service();\n        },\n        enumerable: true,\n        configurable: true\n    });\n    /**\r\n     * Uploads a blob to this object's location.\r\n     * @param data The blob to upload.\r\n     * @return An UploadTask that lets you control and\r\n     *     observe the upload.\r\n     */\n    Reference.prototype.put = function (data, metadata) {\n        if (metadata === void 0) {\n            metadata = null;\n        }\n        validate('put', [uploadDataSpec(), metadataSpec(true)], arguments);\n        this.throwIfRoot_('put');\n        return new UploadTask(this, this.authWrapper, this.location, this.mappings(), new FbsBlob(data), metadata);\n    };\n    /**\r\n     * Uploads a string to this object's location.\r\n     * @param string The string to upload.\r\n     * @param opt_format The format of the string to upload.\r\n     * @return An UploadTask that lets you control and\r\n     *     observe the upload.\r\n     */\n    Reference.prototype.putString = function (string, format, opt_metadata) {\n        if (format === void 0) {\n            format = StringFormat.RAW;\n        }\n        validate('putString', [stringSpec(), stringSpec(formatValidator, true), metadataSpec(true)], arguments);\n        this.throwIfRoot_('putString');\n        var data = dataFromString(format, string);\n        var metadata = clone(opt_metadata);\n        if (!isDef(metadata['contentType']) && isDef(data.contentType)) {\n            metadata['contentType'] = data.contentType;\n        }\n        return new UploadTask(this, this.authWrapper, this.location, this.mappings(), new FbsBlob(data.data, true), metadata);\n    };\n    /**\r\n     * Deletes the object at this location.\r\n     * @return A promise that resolves if the deletion succeeds.\r\n     */\n    Reference.prototype.delete = function () {\n        validate('delete', [], arguments);\n        this.throwIfRoot_('delete');\n        var self = this;\n        return this.authWrapper.getAuthToken().then(function (authToken) {\n            var requestInfo = deleteObject(self.authWrapper, self.location);\n            return self.authWrapper.makeRequest(requestInfo, authToken).getPromise();\n        });\n    };\n    /**\r\n     *     A promise that resolves with the metadata for this object. If this\r\n     *     object doesn't exist or metadata cannot be retreived, the promise is\r\n     *     rejected.\r\n     */\n    Reference.prototype.getMetadata = function () {\n        validate('getMetadata', [], arguments);\n        this.throwIfRoot_('getMetadata');\n        var self = this;\n        return this.authWrapper.getAuthToken().then(function (authToken) {\n            var requestInfo = getMetadata(self.authWrapper, self.location, self.mappings());\n            return self.authWrapper.makeRequest(requestInfo, authToken).getPromise();\n        });\n    };\n    /**\r\n     * Updates the metadata for this object.\r\n     * @param metadata The new metadata for the object.\r\n     *     Only values that have been explicitly set will be changed. Explicitly\r\n     *     setting a value to null will remove the metadata.\r\n     * @return A promise that resolves\r\n     *     with the new metadata for this object.\r\n     *     @see firebaseStorage.Reference.prototype.getMetadata\r\n     */\n    Reference.prototype.updateMetadata = function (metadata) {\n        validate('updateMetadata', [metadataSpec()], arguments);\n        this.throwIfRoot_('updateMetadata');\n        var self = this;\n        return this.authWrapper.getAuthToken().then(function (authToken) {\n            var requestInfo = updateMetadata(self.authWrapper, self.location, metadata, self.mappings());\n            return self.authWrapper.makeRequest(requestInfo, authToken).getPromise();\n        });\n    };\n    /**\r\n     * @return A promise that resolves with the download\r\n     *     URL for this object.\r\n     */\n    Reference.prototype.getDownloadURL = function () {\n        validate('getDownloadURL', [], arguments);\n        this.throwIfRoot_('getDownloadURL');\n        var self = this;\n        return this.authWrapper.getAuthToken().then(function (authToken) {\n            var requestInfo = getDownloadUrl(self.authWrapper, self.location, self.mappings());\n            return self.authWrapper.makeRequest(requestInfo, authToken).getPromise().then(function (url) {\n                if (url === null) {\n                    throw noDownloadURL();\n                }\n                return url;\n            });\n        });\n    };\n    Reference.prototype.throwIfRoot_ = function (name) {\n        if (this.location.path === '') {\n            throw invalidRootOperation(name);\n        }\n    };\n    return Reference;\n}();\n\n/**\r\n * A request whose promise always fails.\r\n * @struct\r\n * @template T\r\n */\nvar FailRequest = /** @class */function () {\n    function FailRequest(error) {\n        this.promise_ = reject(error);\n    }\n    /** @inheritDoc */\n    FailRequest.prototype.getPromise = function () {\n        return this.promise_;\n    };\n    /** @inheritDoc */\n    FailRequest.prototype.cancel = function (appDelete) {\n        if (appDelete === void 0) {\n            appDelete = false;\n        }\n    };\n    return FailRequest;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @struct\r\n */\nvar RequestMap = /** @class */function () {\n    function RequestMap() {\n        this.map_ = {};\n        this.id_ = minSafeInteger;\n    }\n    /**\r\n     * Registers the given request with this map.\r\n     * The request is unregistered when it completes.\r\n     * @param r The request to register.\r\n     */\n    RequestMap.prototype.addRequest = function (r) {\n        var id = this.id_;\n        this.id_++;\n        this.map_[id] = r;\n        var self = this;\n        function unmap() {\n            delete self.map_[id];\n        }\n        r.getPromise().then(unmap, unmap);\n    };\n    /**\r\n     * Cancels all registered requests.\r\n     */\n    RequestMap.prototype.clear = function () {\n        forEach(this.map_, function (key, val) {\n            if (val) {\n                val.cancel(true);\n            }\n        });\n        this.map_ = {};\n    };\n    return RequestMap;\n}();\n\n/**\r\n * @param app If null, getAuthToken always resolves with null.\r\n * @param service The storage service associated with this auth wrapper.\r\n *     Untyped to avoid circular type dependencies.\r\n * @struct\r\n */\nvar AuthWrapper = /** @class */function () {\n    function AuthWrapper(app, maker, requestMaker, service, pool) {\n        this.bucket_ = null;\n        this.deleted_ = false;\n        this.app_ = app;\n        if (this.app_ !== null) {\n            var options = this.app_.options;\n            if (isDef(options)) {\n                this.bucket_ = AuthWrapper.extractBucket_(options);\n            }\n        }\n        this.storageRefMaker_ = maker;\n        this.requestMaker_ = requestMaker;\n        this.pool_ = pool;\n        this.service_ = service;\n        this.maxOperationRetryTime_ = defaultMaxOperationRetryTime;\n        this.maxUploadRetryTime_ = defaultMaxUploadRetryTime;\n        this.requestMap_ = new RequestMap();\n    }\n    AuthWrapper.extractBucket_ = function (config) {\n        var bucketString = config[configOption] || null;\n        if (bucketString == null) {\n            return null;\n        }\n        var loc = Location.makeFromBucketSpec(bucketString);\n        return loc.bucket;\n    };\n    AuthWrapper.prototype.getAuthToken = function () {\n        // TODO(andysoto): remove ifDef checks after firebase-app implements stubs\n        // (b/28673818).\n        if (this.app_ !== null && isDef(this.app_.INTERNAL) && isDef(this.app_.INTERNAL.getToken)) {\n            return this.app_.INTERNAL.getToken().then(function (response) {\n                if (response !== null) {\n                    return response.accessToken;\n                } else {\n                    return null;\n                }\n            }, function (_error) {\n                return null;\n            });\n        } else {\n            return resolve(null);\n        }\n    };\n    AuthWrapper.prototype.bucket = function () {\n        if (this.deleted_) {\n            throw appDeleted();\n        } else {\n            return this.bucket_;\n        }\n    };\n    /**\r\n     * The service associated with this auth wrapper. Untyped to avoid circular\r\n     * type dependencies.\r\n     */\n    AuthWrapper.prototype.service = function () {\n        return this.service_;\n    };\n    /**\r\n     * Returns a new firebaseStorage.Reference object referencing this AuthWrapper\r\n     * at the given Location.\r\n     * @param loc The Location.\r\n     * @return Actually a firebaseStorage.Reference, typing not allowed\r\n     *     because of circular dependency problems.\r\n     */\n    AuthWrapper.prototype.makeStorageReference = function (loc) {\n        return this.storageRefMaker_(this, loc);\n    };\n    AuthWrapper.prototype.makeRequest = function (requestInfo, authToken) {\n        if (!this.deleted_) {\n            var request = this.requestMaker_(requestInfo, authToken, this.pool_);\n            this.requestMap_.addRequest(request);\n            return request;\n        } else {\n            return new FailRequest(appDeleted());\n        }\n    };\n    /**\r\n     * Stop running requests and prevent more from being created.\r\n     */\n    AuthWrapper.prototype.deleteApp = function () {\n        this.deleted_ = true;\n        this.app_ = null;\n        this.requestMap_.clear();\n    };\n    AuthWrapper.prototype.maxUploadRetryTime = function () {\n        return this.maxUploadRetryTime_;\n    };\n    AuthWrapper.prototype.setMaxUploadRetryTime = function (time) {\n        this.maxUploadRetryTime_ = time;\n    };\n    AuthWrapper.prototype.maxOperationRetryTime = function () {\n        return this.maxOperationRetryTime_;\n    };\n    AuthWrapper.prototype.setMaxOperationRetryTime = function (time) {\n        this.maxOperationRetryTime_ = time;\n    };\n    return AuthWrapper;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @param f May be invoked\r\n *     before the function returns.\r\n * @param callback Get all the arguments passed to the function\r\n *     passed to f, including the initial boolean.\r\n */\nfunction start(f, callback, timeout) {\n    // TODO(andysoto): make this code cleaner (probably refactor into an actual\n    // type instead of a bunch of functions with state shared in the closure)\n    var waitSeconds = 1;\n    // Would type this as \"number\" but that doesn't work for Node so ¯\\_(ツ)_/¯\n    var timeoutId = null;\n    var hitTimeout = false;\n    var cancelState = 0;\n    function canceled() {\n        return cancelState === 2;\n    }\n    var triggeredCallback = false;\n    function triggerCallback() {\n        if (!triggeredCallback) {\n            triggeredCallback = true;\n            callback.apply(null, arguments);\n        }\n    }\n    function callWithDelay(millis) {\n        timeoutId = setTimeout(function () {\n            timeoutId = null;\n            f(handler, canceled());\n        }, millis);\n    }\n    function handler(success) {\n        var var_args = [];\n        for (var _i = 1; _i < arguments.length; _i++) {\n            var_args[_i - 1] = arguments[_i];\n        }\n        if (triggeredCallback) {\n            return;\n        }\n        if (success) {\n            triggerCallback.apply(null, arguments);\n            return;\n        }\n        var mustStop = canceled() || hitTimeout;\n        if (mustStop) {\n            triggerCallback.apply(null, arguments);\n            return;\n        }\n        if (waitSeconds < 64) {\n            /* TODO(andysoto): don't back off so quickly if we know we're offline. */\n            waitSeconds *= 2;\n        }\n        var waitMillis;\n        if (cancelState === 1) {\n            cancelState = 2;\n            waitMillis = 0;\n        } else {\n            waitMillis = (waitSeconds + Math.random()) * 1000;\n        }\n        callWithDelay(waitMillis);\n    }\n    var stopped = false;\n    function stop(wasTimeout) {\n        if (stopped) {\n            return;\n        }\n        stopped = true;\n        if (triggeredCallback) {\n            return;\n        }\n        if (timeoutId !== null) {\n            if (!wasTimeout) {\n                cancelState = 2;\n            }\n            clearTimeout(timeoutId);\n            callWithDelay(0);\n        } else {\n            if (!wasTimeout) {\n                cancelState = 1;\n            }\n        }\n    }\n    callWithDelay(0);\n    setTimeout(function () {\n        hitTimeout = true;\n        stop(true);\n    }, timeout);\n    return stop;\n}\n/**\r\n * Stops the retry loop from repeating.\r\n * If the function is currently \"in between\" retries, it is invoked immediately\r\n * with the second parameter as \"true\". Otherwise, it will be invoked once more\r\n * after the current invocation finishes iff the current invocation would have\r\n * triggered another retry.\r\n */\nfunction stop(id) {\n    id(false);\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * @struct\r\n * @template T\r\n */\nvar NetworkRequest = /** @class */function () {\n    function NetworkRequest(url, method, headers, body, successCodes, additionalRetryCodes, callback, errorCallback, timeout, progressCallback, pool) {\n        this.pendingXhr_ = null;\n        this.backoffId_ = null;\n        this.resolve_ = null;\n        this.reject_ = null;\n        this.canceled_ = false;\n        this.appDelete_ = false;\n        this.url_ = url;\n        this.method_ = method;\n        this.headers_ = headers;\n        this.body_ = body;\n        this.successCodes_ = successCodes.slice();\n        this.additionalRetryCodes_ = additionalRetryCodes.slice();\n        this.callback_ = callback;\n        this.errorCallback_ = errorCallback;\n        this.progressCallback_ = progressCallback;\n        this.timeout_ = timeout;\n        this.pool_ = pool;\n        var self = this;\n        this.promise_ = make(function (resolve, reject) {\n            self.resolve_ = resolve;\n            self.reject_ = reject;\n            self.start_();\n        });\n    }\n    /**\r\n     * Actually starts the retry loop.\r\n     */\n    NetworkRequest.prototype.start_ = function () {\n        var self = this;\n        function doTheRequest(backoffCallback, canceled) {\n            if (canceled) {\n                backoffCallback(false, new RequestEndStatus(false, null, true));\n                return;\n            }\n            var xhr = self.pool_.createXhrIo();\n            self.pendingXhr_ = xhr;\n            function progressListener(progressEvent) {\n                var loaded = progressEvent.loaded;\n                var total = progressEvent.lengthComputable ? progressEvent.total : -1;\n                if (self.progressCallback_ !== null) {\n                    self.progressCallback_(loaded, total);\n                }\n            }\n            if (self.progressCallback_ !== null) {\n                xhr.addUploadProgressListener(progressListener);\n            }\n            xhr.send(self.url_, self.method_, self.body_, self.headers_).then(function (xhr) {\n                if (self.progressCallback_ !== null) {\n                    xhr.removeUploadProgressListener(progressListener);\n                }\n                self.pendingXhr_ = null;\n                xhr = xhr;\n                var hitServer = xhr.getErrorCode() === ErrorCode.NO_ERROR;\n                var status = xhr.getStatus();\n                if (!hitServer || self.isRetryStatusCode_(status)) {\n                    var wasCanceled = xhr.getErrorCode() === ErrorCode.ABORT;\n                    backoffCallback(false, new RequestEndStatus(false, null, wasCanceled));\n                    return;\n                }\n                var successCode = contains$1(self.successCodes_, status);\n                backoffCallback(true, new RequestEndStatus(successCode, xhr));\n            });\n        }\n        /**\r\n         * @param requestWentThrough True if the request eventually went\r\n         *     through, false if it hit the retry limit or was canceled.\r\n         */\n        function backoffDone(requestWentThrough, status) {\n            var resolve = self.resolve_;\n            var reject = self.reject_;\n            var xhr = status.xhr;\n            if (status.wasSuccessCode) {\n                try {\n                    var result = self.callback_(xhr, xhr.getResponseText());\n                    if (isJustDef(result)) {\n                        resolve(result);\n                    } else {\n                        resolve();\n                    }\n                } catch (e) {\n                    reject(e);\n                }\n            } else {\n                if (xhr !== null) {\n                    var err = unknown();\n                    err.setServerResponseProp(xhr.getResponseText());\n                    if (self.errorCallback_) {\n                        reject(self.errorCallback_(xhr, err));\n                    } else {\n                        reject(err);\n                    }\n                } else {\n                    if (status.canceled) {\n                        var err = self.appDelete_ ? appDeleted() : canceled();\n                        reject(err);\n                    } else {\n                        var err = retryLimitExceeded();\n                        reject(err);\n                    }\n                }\n            }\n        }\n        if (this.canceled_) {\n            backoffDone(false, new RequestEndStatus(false, null, true));\n        } else {\n            this.backoffId_ = start(doTheRequest, backoffDone, this.timeout_);\n        }\n    };\n    /** @inheritDoc */\n    NetworkRequest.prototype.getPromise = function () {\n        return this.promise_;\n    };\n    /** @inheritDoc */\n    NetworkRequest.prototype.cancel = function (appDelete) {\n        this.canceled_ = true;\n        this.appDelete_ = appDelete || false;\n        if (this.backoffId_ !== null) {\n            stop(this.backoffId_);\n        }\n        if (this.pendingXhr_ !== null) {\n            this.pendingXhr_.abort();\n        }\n    };\n    NetworkRequest.prototype.isRetryStatusCode_ = function (status) {\n        // The codes for which to retry came from this page:\n        // https://cloud.google.com/storage/docs/exponential-backoff\n        var isFiveHundredCode = status >= 500 && status < 600;\n        var extraRetryCodes = [\n        // Request Timeout: web server didn't receive full request in time.\n        408,\n        // Too Many Requests: you're getting rate-limited, basically.\n        429];\n        var isExtraRetryCode = contains$1(extraRetryCodes, status);\n        var isRequestSpecificRetryCode = contains$1(this.additionalRetryCodes_, status);\n        return isFiveHundredCode || isExtraRetryCode || isRequestSpecificRetryCode;\n    };\n    return NetworkRequest;\n}();\n/**\r\n * A collection of information about the result of a network request.\r\n * @param opt_canceled Defaults to false.\r\n * @struct\r\n */\nvar RequestEndStatus = /** @class */function () {\n    function RequestEndStatus(wasSuccessCode, xhr, opt_canceled) {\n        this.wasSuccessCode = wasSuccessCode;\n        this.xhr = xhr;\n        this.canceled = !!opt_canceled;\n    }\n    return RequestEndStatus;\n}();\nfunction addAuthHeader_(headers, authToken) {\n    if (authToken !== null && authToken.length > 0) {\n        headers['Authorization'] = 'Firebase ' + authToken;\n    }\n}\nfunction addVersionHeader_(headers) {\n    var number = typeof app_dist_index_cjs_default.a !== 'undefined' ? app_dist_index_cjs_default.a.SDK_VERSION : 'AppManager';\n    headers['X-Firebase-Storage-Version'] = 'webjs/' + number;\n}\n/**\r\n * @template T\r\n */\nfunction makeRequest(requestInfo, authToken, pool) {\n    var queryPart = makeQueryString(requestInfo.urlParams);\n    var url = requestInfo.url + queryPart;\n    var headers = clone(requestInfo.headers);\n    addAuthHeader_(headers, authToken);\n    addVersionHeader_(headers);\n    return new NetworkRequest(url, requestInfo.method, headers, requestInfo.body, requestInfo.successCodes, requestInfo.additionalRetryCodes, requestInfo.handler, requestInfo.errorHandler, requestInfo.timeout, requestInfo.progressCallback, pool);\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * A service that provides firebaseStorage.Reference instances.\r\n * @param opt_url gs:// url to a custom Storage Bucket\r\n *\r\n * @struct\r\n */\nvar Service = /** @class */function () {\n    function Service(app, pool, url) {\n        this.bucket_ = null;\n        function maker(authWrapper, loc) {\n            return new Reference(authWrapper, loc);\n        }\n        this.authWrapper_ = new AuthWrapper(app, maker, makeRequest, this, pool);\n        this.app_ = app;\n        if (url != null) {\n            this.bucket_ = Location.makeFromBucketSpec(url);\n        } else {\n            var authWrapperBucket = this.authWrapper_.bucket();\n            if (authWrapperBucket != null) {\n                this.bucket_ = new Location(authWrapperBucket, '');\n            }\n        }\n        this.internals_ = new ServiceInternals(this);\n    }\n    /**\r\n     * Returns a firebaseStorage.Reference for the given path in the default\r\n     * bucket.\r\n     */\n    Service.prototype.ref = function (path) {\n        function validator(path) {\n            if (/^[A-Za-z]+:\\/\\//.test(path)) {\n                throw 'Expected child path but got a URL, use refFromURL instead.';\n            }\n        }\n        validate('ref', [stringSpec(validator, true)], arguments);\n        if (this.bucket_ == null) {\n            throw new Error('No Storage Bucket defined in Firebase Options.');\n        }\n        var ref = new Reference(this.authWrapper_, this.bucket_);\n        if (path != null) {\n            return ref.child(path);\n        } else {\n            return ref;\n        }\n    };\n    /**\r\n     * Returns a firebaseStorage.Reference object for the given absolute URL,\r\n     * which must be a gs:// or http[s]:// URL.\r\n     */\n    Service.prototype.refFromURL = function (url) {\n        function validator(p) {\n            if (!/^[A-Za-z]+:\\/\\//.test(p)) {\n                throw 'Expected full URL but got a child path, use ref instead.';\n            }\n            try {\n                Location.makeFromUrl(p);\n            } catch (e) {\n                throw 'Expected valid full URL but got an invalid one.';\n            }\n        }\n        validate('refFromURL', [stringSpec(validator, false)], arguments);\n        return new Reference(this.authWrapper_, url);\n    };\n    Object.defineProperty(Service.prototype, \"maxUploadRetryTime\", {\n        get: function get() {\n            return this.authWrapper_.maxUploadRetryTime();\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Service.prototype.setMaxUploadRetryTime = function (time) {\n        validate('setMaxUploadRetryTime', [nonNegativeNumberSpec()], arguments);\n        this.authWrapper_.setMaxUploadRetryTime(time);\n    };\n    Object.defineProperty(Service.prototype, \"maxOperationRetryTime\", {\n        get: function get() {\n            return this.authWrapper_.maxOperationRetryTime();\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Service.prototype.setMaxOperationRetryTime = function (time) {\n        validate('setMaxOperationRetryTime', [nonNegativeNumberSpec()], arguments);\n        this.authWrapper_.setMaxOperationRetryTime(time);\n    };\n    Object.defineProperty(Service.prototype, \"app\", {\n        get: function get() {\n            return this.app_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(Service.prototype, \"INTERNAL\", {\n        get: function get() {\n            return this.internals_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    return Service;\n}();\n/**\r\n * @struct\r\n */\nvar ServiceInternals = /** @class */function () {\n    function ServiceInternals(service) {\n        this.service_ = service;\n    }\n    /**\r\n     * Called when the associated app is deleted.\r\n     * @see {!fbs.AuthWrapper.prototype.deleteApp}\r\n     */\n    ServiceInternals.prototype.delete = function () {\n        this.service_.authWrapper_.deleteApp();\n        return resolve(undefined);\n    };\n    return ServiceInternals;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * Type constant for Firebase Storage.\r\n */\nvar STORAGE_TYPE = 'storage';\nfunction factory(app, unused, opt_url) {\n    return new Service(app, new XhrIoPool(), opt_url);\n}\nfunction registerStorage(instance) {\n    var namespaceExports = {\n        // no-inline\n        TaskState: TaskState,\n        TaskEvent: TaskEvent,\n        StringFormat: StringFormat,\n        Storage: Service,\n        Reference: Reference\n    };\n    instance.INTERNAL.registerService(STORAGE_TYPE, factory, namespaceExports, undefined,\n    // Allow multiple storage instances per app.\n    true);\n}\nregisterStorage(app_dist_index_cjs_default.a);\n\n\n// CONCATENATED MODULE: ../node_modules/firebase/storage/dist/index.esm.js\n\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n// CONCATENATED MODULE: ./firebase/index.js\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"a\", function() { return auth; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"b\", function() { return database; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"d\", function() { return storage; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"c\", function() { return googleAuthProvider; });\n/* unused concated harmony import firebase */\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, false, function() { return index_cjs_default.a; });\n\n\n\n\n\n/* ---\n\n NOTE #1: in a robust solution, you'd put this in a keystore and have the\nCI/CD process pull in the value\n\nNOTE #2: The firebase project will require the origin IP to be whitelisted.\nIn a robust solution, you'd use a server-side call or a hosted IP so that\nthe IP ranges are stable and predictable.\n\nNOTE #3: This example does not properly secure read/write operations which\nyou'd want to do in an actual production setting.\n\n--- */\n\nvar config = {\n\tapiKey: 'AIzaSyBgIncNGTYW9ggtIuUcfu8F0ZkVtWDWX8g',\n\tauthDomain: 'fir-demo-001.firebaseapp.com',\n\tdatabaseURL: 'https://fir-demo-001.firebaseio.com',\n\tprojectId: 'fir-demo-001',\n\tstorageBucket: 'fir-demo-001.appspot.com',\n\tmessagingSenderId: '524883414163'\n};\n\nif (!index_cjs_default.a.apps.length) {\n\tindex_cjs_default.a.initializeApp(config);\n}\n\nvar auth = index_cjs_default.a.auth();\nvar database = index_cjs_default.a.database();\nvar storage = index_cjs_default.a.storage();\n\nvar googleAuthProvider = new index_cjs_default.a.auth.GoogleAuthProvider();\ngoogleAuthProvider.addScope('email');\ngoogleAuthProvider.setCustomParameters({ prompt: 'select_account' }); //force account selection\n\n\n\n/***/ }),\n\n/***/ \"8z9W\":\n/***/ (function(module, exports, __webpack_require__) {\n\n__webpack_require__(\"C8Uh\");\nmodule.exports = __webpack_require__(\"VT6h\").String.repeat;\n\n/***/ }),\n\n/***/ \"A2is\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nmodule.exports = function (str) {\n\treturn encodeURIComponent(str).replace(/[!'()*]/g, function (c) {\n\t\treturn '%' + c.charCodeAt(0).toString(16).toUpperCase();\n\t});\n};\n\n/***/ }),\n\n/***/ \"A7+C\":\n/***/ (function(module, exports) {\n\nmodule.exports = function (it) {\n  return typeof it === 'object' ? it !== null : typeof it === 'function';\n};\n\n/***/ }),\n\n/***/ \"ABuq\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar isObject = __webpack_require__(\"A7+C\");\nvar isArray = __webpack_require__(\"hOGE\");\nvar SPECIES = __webpack_require__(\"Teay\")('species');\n\nmodule.exports = function (original) {\n  var C;\n  if (isArray(original)) {\n    C = original.constructor;\n    // cross-realm fallback\n    if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;\n    if (isObject(C)) {\n      C = C[SPECIES];\n      if (C === null) C = undefined;\n    }\n  }return C === undefined ? Array : C;\n};\n\n/***/ }),\n\n/***/ \"AkAO\":\n/***/ (function(module, exports) {\n\nfunction _setPrototypeOf(o, p) {\n  module.exports = _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n    o.__proto__ = p;\n    return o;\n  };\n\n  return _setPrototypeOf(o, p);\n}\n\nmodule.exports = _setPrototypeOf;\n\n/***/ }),\n\n/***/ \"An0w\":\n/***/ (function(module, exports, __webpack_require__) {\n\n__webpack_require__(\"4Tmy\");\nmodule.exports = __webpack_require__(\"VT6h\").Array.find;\n\n/***/ }),\n\n/***/ \"Aoj9\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar isObject = __webpack_require__(\"A7+C\");\nmodule.exports = function (it) {\n  if (!isObject(it)) throw TypeError(it + ' is not an object!');\n  return it;\n};\n\n/***/ }),\n\n/***/ \"C8Uh\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar $export = __webpack_require__(\"Rhd1\");\n\n$export($export.P, 'String', {\n  // 21.1.3.13 String.prototype.repeat(count)\n  repeat: __webpack_require__(\"iMm/\")\n});\n\n/***/ }),\n\n/***/ \"CHE6\":\n/***/ (function(module, exports) {\n\nmodule.exports = {};\n\n/***/ }),\n\n/***/ \"CiFW\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar LIBRARY = __webpack_require__(\"Z+w7\");\nvar $export = __webpack_require__(\"Rhd1\");\nvar redefine = __webpack_require__(\"HnsU\");\nvar hide = __webpack_require__(\"viVs\");\nvar Iterators = __webpack_require__(\"CHE6\");\nvar $iterCreate = __webpack_require__(\"6AzL\");\nvar setToStringTag = __webpack_require__(\"Oqvp\");\nvar getPrototypeOf = __webpack_require__(\"Qs3+\");\nvar ITERATOR = __webpack_require__(\"Teay\")('iterator');\nvar BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`\nvar FF_ITERATOR = '@@iterator';\nvar KEYS = 'keys';\nvar VALUES = 'values';\n\nvar returnThis = function returnThis() {\n  return this;\n};\n\nmodule.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {\n  $iterCreate(Constructor, NAME, next);\n  var getMethod = function getMethod(kind) {\n    if (!BUGGY && kind in proto) return proto[kind];\n    switch (kind) {\n      case KEYS:\n        return function keys() {\n          return new Constructor(this, kind);\n        };\n      case VALUES:\n        return function values() {\n          return new Constructor(this, kind);\n        };\n    }return function entries() {\n      return new Constructor(this, kind);\n    };\n  };\n  var TAG = NAME + ' Iterator';\n  var DEF_VALUES = DEFAULT == VALUES;\n  var VALUES_BUG = false;\n  var proto = Base.prototype;\n  var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];\n  var $default = $native || getMethod(DEFAULT);\n  var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;\n  var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;\n  var methods, key, IteratorPrototype;\n  // Fix native\n  if ($anyNative) {\n    IteratorPrototype = getPrototypeOf($anyNative.call(new Base()));\n    if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {\n      // Set @@toStringTag to native iterators\n      setToStringTag(IteratorPrototype, TAG, true);\n      // fix for some old engines\n      if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') hide(IteratorPrototype, ITERATOR, returnThis);\n    }\n  }\n  // fix Array#{values, @@iterator}.name in V8 / FF\n  if (DEF_VALUES && $native && $native.name !== VALUES) {\n    VALUES_BUG = true;\n    $default = function values() {\n      return $native.call(this);\n    };\n  }\n  // Define iterator\n  if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) {\n    hide(proto, ITERATOR, $default);\n  }\n  // Plug for library\n  Iterators[NAME] = $default;\n  Iterators[TAG] = returnThis;\n  if (DEFAULT) {\n    methods = {\n      values: DEF_VALUES ? $default : getMethod(VALUES),\n      keys: IS_SET ? $default : getMethod(KEYS),\n      entries: $entries\n    };\n    if (FORCED) for (key in methods) {\n      if (!(key in proto)) redefine(proto, key, methods[key]);\n    } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods);\n  }\n  return methods;\n};\n\n/***/ }),\n\n/***/ \"E/bI\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* WEBPACK VAR INJECTION */(function(global) {/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"a\", function() { return Provider; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"b\", function() { return connect; });\n/* unused harmony export connectAdvanced */\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_preact__ = __webpack_require__(\"KM04\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_preact___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_preact__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_redux__ = __webpack_require__(\"aV+f\");\n\n\n\nvar Children = {\n  only: function only(children) {\n    return children && children[0] || null;\n  }\n};\n\nfunction proptype() {}\nproptype.isRequired = proptype;\n\nvar PropTypes = {\n  element: proptype,\n  func: proptype,\n  shape: function shape() {\n    return proptype;\n  },\n  instanceOf: function instanceOf() {\n    return proptype;\n  }\n};\n\nvar subscriptionShape = PropTypes.shape({\n  trySubscribe: PropTypes.func.isRequired,\n  tryUnsubscribe: PropTypes.func.isRequired,\n  notifyNestedSubs: PropTypes.func.isRequired,\n  isSubscribed: PropTypes.func.isRequired\n});\n\nvar storeShape = PropTypes.shape({\n  subscribe: PropTypes.func.isRequired,\n  dispatch: PropTypes.func.isRequired,\n  getState: PropTypes.func.isRequired\n});\n\n/**\n * Prints a warning in the console if it exists.\n *\n * @param {String} message The warning message.\n * @returns {void}\n */\nfunction warning(message) {\n  /* eslint-disable no-console */\n  if (typeof console !== 'undefined' && typeof console.error === 'function') {\n    console.error(message);\n  }\n  /* eslint-enable no-console */\n  try {\n    // This error was thrown as a convenience so that if you enable\n    // \"break on all exceptions\" in your console,\n    // it would pause the execution at this line.\n    throw new Error(message);\n    /* eslint-disable no-empty */\n  } catch (e) {}\n  /* eslint-enable no-empty */\n}\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n  return typeof obj;\n} : function (obj) {\n  return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\n\nvar classCallCheck = function classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n};\n\nvar _extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];\n\n    for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n\n  return target;\n};\n\nvar inherits = function inherits(subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n  }\n\n  subClass.prototype = Object.create(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      enumerable: false,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n};\n\nvar objectWithoutProperties = function objectWithoutProperties(obj, keys) {\n  var target = {};\n\n  for (var i in obj) {\n    if (keys.indexOf(i) >= 0) continue;\n    if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;\n    target[i] = obj[i];\n  }\n\n  return target;\n};\n\nvar possibleConstructorReturn = function possibleConstructorReturn(self, call) {\n  if (!self) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n\n  return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n};\n\nvar didWarnAboutReceivingStore = false;\nfunction warnAboutReceivingStore() {\n  if (didWarnAboutReceivingStore) {\n    return;\n  }\n  didWarnAboutReceivingStore = true;\n\n  warning('<Provider> does not support changing `store` on the fly. ' + 'It is most likely that you see this error because you updated to ' + 'Redux 2.x and React Redux 2.x which no longer hot reload reducers ' + 'automatically. See https://github.com/reactjs/react-redux/releases/' + 'tag/v2.0.0 for the migration instructions.');\n}\n\nfunction createProvider() {\n  var _Provider$childContex;\n\n  var storeKey = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'store';\n  var subKey = arguments[1];\n\n  var subscriptionKey = subKey || storeKey + 'Subscription';\n\n  var Provider = function (_Component) {\n    inherits(Provider, _Component);\n\n    Provider.prototype.getChildContext = function getChildContext() {\n      var _ref;\n\n      return _ref = {}, _ref[storeKey] = this[storeKey], _ref[subscriptionKey] = null, _ref;\n    };\n\n    function Provider(props, context) {\n      classCallCheck(this, Provider);\n\n      var _this = possibleConstructorReturn(this, _Component.call(this, props, context));\n\n      _this[storeKey] = props.store;\n      return _this;\n    }\n\n    Provider.prototype.render = function render() {\n      return Children.only(this.props.children);\n    };\n\n    return Provider;\n  }(__WEBPACK_IMPORTED_MODULE_0_preact__[\"Component\"]);\n\n  {\n    Provider.prototype.componentWillReceiveProps = function (nextProps) {\n      if (this[storeKey] !== nextProps.store) {\n        warnAboutReceivingStore();\n      }\n    };\n  }\n\n  Provider.childContextTypes = (_Provider$childContex = {}, _Provider$childContex[storeKey] = storeShape.isRequired, _Provider$childContex[subscriptionKey] = subscriptionShape, _Provider$childContex);\n\n  return Provider;\n}\n\nvar Provider = createProvider();\n\n/**\n * Copyright 2015, Yahoo! Inc.\n * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.\n */\nvar REACT_STATICS = {\n  childContextTypes: true,\n  contextTypes: true,\n  defaultProps: true,\n  displayName: true,\n  getDefaultProps: true,\n  mixins: true,\n  propTypes: true,\n  type: true\n};\n\nvar KNOWN_STATICS = {\n  name: true,\n  length: true,\n  prototype: true,\n  caller: true,\n  callee: true,\n  arguments: true,\n  arity: true\n};\n\nvar defineProperty$1 = Object.defineProperty;\nvar getOwnPropertyNames = Object.getOwnPropertyNames;\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar getPrototypeOf = Object.getPrototypeOf;\nvar objectPrototype = getPrototypeOf && getPrototypeOf(Object);\n\nvar hoistNonReactStatics = function hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {\n  if (typeof sourceComponent !== 'string') {\n    // don't hoist over string (html) components\n\n    if (objectPrototype) {\n      var inheritedComponent = getPrototypeOf(sourceComponent);\n      if (inheritedComponent && inheritedComponent !== objectPrototype) {\n        hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);\n      }\n    }\n\n    var keys = getOwnPropertyNames(sourceComponent);\n\n    if (getOwnPropertySymbols) {\n      keys = keys.concat(getOwnPropertySymbols(sourceComponent));\n    }\n\n    for (var i = 0; i < keys.length; ++i) {\n      var key = keys[i];\n      if (!REACT_STATICS[key] && !KNOWN_STATICS[key] && (!blacklist || !blacklist[key])) {\n        var descriptor = getOwnPropertyDescriptor(sourceComponent, key);\n        try {\n          // Avoid failures from read-only properties\n          defineProperty$1(targetComponent, key, descriptor);\n        } catch (e) {}\n      }\n    }\n\n    return targetComponent;\n  }\n\n  return targetComponent;\n};\n\nvar invariant = function invariant() {};\n\n// encapsulates the subscription logic for connecting a component to the redux store, as\n// well as nesting subscriptions of descendant components, so that we can ensure the\n// ancestor components re-render before descendants\n\nvar CLEARED = null;\nvar nullListeners = {\n  notify: function notify() {}\n};\n\nfunction createListenerCollection() {\n  // the current/next pattern is copied from redux's createStore code.\n  // TODO: refactor+expose that code to be reusable here?\n  var current = [];\n  var next = [];\n\n  return {\n    clear: function clear() {\n      next = CLEARED;\n      current = CLEARED;\n    },\n    notify: function notify() {\n      var listeners = current = next;\n      for (var i = 0; i < listeners.length; i++) {\n        listeners[i]();\n      }\n    },\n    get: function get$$1() {\n      return next;\n    },\n    subscribe: function subscribe(listener) {\n      var isSubscribed = true;\n      if (next === current) next = current.slice();\n      next.push(listener);\n\n      return function unsubscribe() {\n        if (!isSubscribed || current === CLEARED) return;\n        isSubscribed = false;\n\n        if (next === current) next = current.slice();\n        next.splice(next.indexOf(listener), 1);\n      };\n    }\n  };\n}\n\nvar Subscription = function () {\n  function Subscription(store, parentSub, onStateChange) {\n    classCallCheck(this, Subscription);\n\n    this.store = store;\n    this.parentSub = parentSub;\n    this.onStateChange = onStateChange;\n    this.unsubscribe = null;\n    this.listeners = nullListeners;\n  }\n\n  Subscription.prototype.addNestedSub = function addNestedSub(listener) {\n    this.trySubscribe();\n    return this.listeners.subscribe(listener);\n  };\n\n  Subscription.prototype.notifyNestedSubs = function notifyNestedSubs() {\n    this.listeners.notify();\n  };\n\n  Subscription.prototype.isSubscribed = function isSubscribed() {\n    return Boolean(this.unsubscribe);\n  };\n\n  Subscription.prototype.trySubscribe = function trySubscribe() {\n    if (!this.unsubscribe) {\n      this.unsubscribe = this.parentSub ? this.parentSub.addNestedSub(this.onStateChange) : this.store.subscribe(this.onStateChange);\n\n      this.listeners = createListenerCollection();\n    }\n  };\n\n  Subscription.prototype.tryUnsubscribe = function tryUnsubscribe() {\n    if (this.unsubscribe) {\n      this.unsubscribe();\n      this.unsubscribe = null;\n      this.listeners.clear();\n      this.listeners = nullListeners;\n    }\n  };\n\n  return Subscription;\n}();\n\nvar hotReloadingVersion = 0;\nvar dummyState = {};\nfunction noop() {}\nfunction makeSelectorStateful(sourceSelector, store) {\n  // wrap the selector in an object that tracks its results between runs.\n  var selector = {\n    run: function runComponentSelector(props) {\n      try {\n        var nextProps = sourceSelector(store.getState(), props);\n        if (nextProps !== selector.props || selector.error) {\n          selector.shouldComponentUpdate = true;\n          selector.props = nextProps;\n          selector.error = null;\n        }\n      } catch (error) {\n        selector.shouldComponentUpdate = true;\n        selector.error = error;\n      }\n    }\n  };\n\n  return selector;\n}\n\nfunction connectAdvanced(\n/*\n  selectorFactory is a func that is responsible for returning the selector function used to\n  compute new props from state, props, and dispatch. For example:\n     export default connectAdvanced((dispatch, options) => (state, props) => ({\n      thing: state.things[props.thingId],\n      saveThing: fields => dispatch(actionCreators.saveThing(props.thingId, fields)),\n    }))(YourComponent)\n   Access to dispatch is provided to the factory so selectorFactories can bind actionCreators\n  outside of their selector as an optimization. Options passed to connectAdvanced are passed to\n  the selectorFactory, along with displayName and WrappedComponent, as the second argument.\n   Note that selectorFactory is responsible for all caching/memoization of inbound and outbound\n  props. Do not use connectAdvanced directly without memoizing results between calls to your\n  selector, otherwise the Connect component will re-render on every state or props change.\n*/\nselectorFactory) {\n  var _contextTypes, _childContextTypes;\n\n  var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n  var _ref$getDisplayName = _ref.getDisplayName,\n      getDisplayName = _ref$getDisplayName === undefined ? function (name) {\n    return 'ConnectAdvanced(' + name + ')';\n  } : _ref$getDisplayName,\n      _ref$methodName = _ref.methodName,\n      methodName = _ref$methodName === undefined ? 'connectAdvanced' : _ref$methodName,\n      _ref$renderCountProp = _ref.renderCountProp,\n      renderCountProp = _ref$renderCountProp === undefined ? undefined : _ref$renderCountProp,\n      _ref$shouldHandleStat = _ref.shouldHandleStateChanges,\n      shouldHandleStateChanges = _ref$shouldHandleStat === undefined ? true : _ref$shouldHandleStat,\n      _ref$storeKey = _ref.storeKey,\n      storeKey = _ref$storeKey === undefined ? 'store' : _ref$storeKey,\n      _ref$withRef = _ref.withRef,\n      withRef = _ref$withRef === undefined ? false : _ref$withRef,\n      connectOptions = objectWithoutProperties(_ref, ['getDisplayName', 'methodName', 'renderCountProp', 'shouldHandleStateChanges', 'storeKey', 'withRef']);\n\n  var subscriptionKey = storeKey + 'Subscription';\n  var version = hotReloadingVersion++;\n\n  var contextTypes = (_contextTypes = {}, _contextTypes[storeKey] = storeShape, _contextTypes[subscriptionKey] = subscriptionShape, _contextTypes);\n  var childContextTypes = (_childContextTypes = {}, _childContextTypes[subscriptionKey] = subscriptionShape, _childContextTypes);\n\n  return function wrapWithConnect(WrappedComponent) {\n    invariant(typeof WrappedComponent == 'function', 'You must pass a component to the function returned by ' + ('connect. Instead received ' + JSON.stringify(WrappedComponent)));\n\n    var wrappedComponentName = WrappedComponent.displayName || WrappedComponent.name || 'Component';\n\n    var displayName = getDisplayName(wrappedComponentName);\n\n    var selectorFactoryOptions = _extends({}, connectOptions, {\n      getDisplayName: getDisplayName,\n      methodName: methodName,\n      renderCountProp: renderCountProp,\n      shouldHandleStateChanges: shouldHandleStateChanges,\n      storeKey: storeKey,\n      withRef: withRef,\n      displayName: displayName,\n      wrappedComponentName: wrappedComponentName,\n      WrappedComponent: WrappedComponent\n    });\n\n    var Connect = function (_Component) {\n      inherits(Connect, _Component);\n\n      function Connect(props, context) {\n        classCallCheck(this, Connect);\n\n        var _this = possibleConstructorReturn(this, _Component.call(this, props, context));\n\n        _this.version = version;\n        _this.state = {};\n        _this.renderCount = 0;\n        _this.store = props[storeKey] || context[storeKey];\n        _this.propsMode = Boolean(props[storeKey]);\n        _this.setWrappedInstance = _this.setWrappedInstance.bind(_this);\n\n        invariant(_this.store, 'Could not find \"' + storeKey + '\" in either the context or props of ' + ('\"' + displayName + '\". Either wrap the root component in a <Provider>, ') + ('or explicitly pass \"' + storeKey + '\" as a prop to \"' + displayName + '\".'));\n\n        _this.initSelector();\n        _this.initSubscription();\n        return _this;\n      }\n\n      Connect.prototype.getChildContext = function getChildContext() {\n        var _ref2;\n\n        // If this component received store from props, its subscription should be transparent\n        // to any descendants receiving store+subscription from context; it passes along\n        // subscription passed to it. Otherwise, it shadows the parent subscription, which allows\n        // Connect to control ordering of notifications to flow top-down.\n        var subscription = this.propsMode ? null : this.subscription;\n        return _ref2 = {}, _ref2[subscriptionKey] = subscription || this.context[subscriptionKey], _ref2;\n      };\n\n      Connect.prototype.componentDidMount = function componentDidMount() {\n        if (!shouldHandleStateChanges) return;\n\n        // componentWillMount fires during server side rendering, but componentDidMount and\n        // componentWillUnmount do not. Because of this, trySubscribe happens during ...didMount.\n        // Otherwise, unsubscription would never take place during SSR, causing a memory leak.\n        // To handle the case where a child component may have triggered a state change by\n        // dispatching an action in its componentWillMount, we have to re-run the select and maybe\n        // re-render.\n        this.subscription.trySubscribe();\n        this.selector.run(this.props);\n        if (this.selector.shouldComponentUpdate) this.forceUpdate();\n      };\n\n      Connect.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {\n        this.selector.run(nextProps);\n      };\n\n      Connect.prototype.shouldComponentUpdate = function shouldComponentUpdate() {\n        return this.selector.shouldComponentUpdate;\n      };\n\n      Connect.prototype.componentWillUnmount = function componentWillUnmount() {\n        if (this.subscription) this.subscription.tryUnsubscribe();\n        this.subscription = null;\n        this.notifyNestedSubs = noop;\n        this.store = null;\n        this.selector.run = noop;\n        this.selector.shouldComponentUpdate = false;\n      };\n\n      Connect.prototype.getWrappedInstance = function getWrappedInstance() {\n        invariant(withRef, 'To access the wrapped instance, you need to specify ' + ('{ withRef: true } in the options argument of the ' + methodName + '() call.'));\n        return this.wrappedInstance;\n      };\n\n      Connect.prototype.setWrappedInstance = function setWrappedInstance(ref) {\n        this.wrappedInstance = ref;\n      };\n\n      Connect.prototype.initSelector = function initSelector() {\n        var sourceSelector = selectorFactory(this.store.dispatch, selectorFactoryOptions);\n        this.selector = makeSelectorStateful(sourceSelector, this.store);\n        this.selector.run(this.props);\n      };\n\n      Connect.prototype.initSubscription = function initSubscription() {\n        if (!shouldHandleStateChanges) return;\n\n        // parentSub's source should match where store came from: props vs. context. A component\n        // connected to the store via props shouldn't use subscription from context, or vice versa.\n        var parentSub = (this.propsMode ? this.props : this.context)[subscriptionKey];\n        this.subscription = new Subscription(this.store, parentSub, this.onStateChange.bind(this));\n\n        // `notifyNestedSubs` is duplicated to handle the case where the component is  unmounted in\n        // the middle of the notification loop, where `this.subscription` will then be null. An\n        // extra null check every change can be avoided by copying the method onto `this` and then\n        // replacing it with a no-op on unmount. This can probably be avoided if Subscription's\n        // listeners logic is changed to not call listeners that have been unsubscribed in the\n        // middle of the notification loop.\n        this.notifyNestedSubs = this.subscription.notifyNestedSubs.bind(this.subscription);\n      };\n\n      Connect.prototype.onStateChange = function onStateChange() {\n        this.selector.run(this.props);\n\n        if (!this.selector.shouldComponentUpdate) {\n          this.notifyNestedSubs();\n        } else {\n          this.componentDidUpdate = this.notifyNestedSubsOnComponentDidUpdate;\n          this.setState(dummyState);\n        }\n      };\n\n      Connect.prototype.notifyNestedSubsOnComponentDidUpdate = function notifyNestedSubsOnComponentDidUpdate() {\n        // `componentDidUpdate` is conditionally implemented when `onStateChange` determines it\n        // needs to notify nested subs. Once called, it unimplements itself until further state\n        // changes occur. Doing it this way vs having a permanent `componentDidUpdate` that does\n        // a boolean check every time avoids an extra method call most of the time, resulting\n        // in some perf boost.\n        this.componentDidUpdate = undefined;\n        this.notifyNestedSubs();\n      };\n\n      Connect.prototype.isSubscribed = function isSubscribed() {\n        return Boolean(this.subscription) && this.subscription.isSubscribed();\n      };\n\n      Connect.prototype.addExtraProps = function addExtraProps(props) {\n        if (!withRef && !renderCountProp && !(this.propsMode && this.subscription)) return props;\n        // make a shallow copy so that fields added don't leak to the original selector.\n        // this is especially important for 'ref' since that's a reference back to the component\n        // instance. a singleton memoized selector would then be holding a reference to the\n        // instance, preventing the instance from being garbage collected, and that would be bad\n        var withExtras = _extends({}, props);\n        if (withRef) withExtras.ref = this.setWrappedInstance;\n        if (renderCountProp) withExtras[renderCountProp] = this.renderCount++;\n        if (this.propsMode && this.subscription) withExtras[subscriptionKey] = this.subscription;\n        return withExtras;\n      };\n\n      Connect.prototype.render = function render() {\n        var selector = this.selector;\n        selector.shouldComponentUpdate = false;\n\n        if (selector.error) {\n          throw selector.error;\n        } else {\n          return Object(__WEBPACK_IMPORTED_MODULE_0_preact__[\"h\"])(WrappedComponent, this.addExtraProps(selector.props));\n        }\n      };\n\n      return Connect;\n    }(__WEBPACK_IMPORTED_MODULE_0_preact__[\"Component\"]);\n\n    Connect.WrappedComponent = WrappedComponent;\n    Connect.displayName = displayName;\n    Connect.childContextTypes = childContextTypes;\n    Connect.contextTypes = contextTypes;\n\n    {\n      Connect.prototype.componentWillUpdate = function componentWillUpdate() {\n        var _this2 = this;\n\n        // We are hot reloading!\n        if (this.version !== version) {\n          this.version = version;\n          this.initSelector();\n\n          // If any connected descendants don't hot reload (and resubscribe in the process), their\n          // listeners will be lost when we unsubscribe. Unfortunately, by copying over all\n          // listeners, this does mean that the old versions of connected descendants will still be\n          // notified of state changes; however, their onStateChange function is a no-op so this\n          // isn't a huge deal.\n          var oldListeners = [];\n\n          if (this.subscription) {\n            oldListeners = this.subscription.listeners.get();\n            this.subscription.tryUnsubscribe();\n          }\n          this.initSubscription();\n          if (shouldHandleStateChanges) {\n            this.subscription.trySubscribe();\n            oldListeners.forEach(function (listener) {\n              return _this2.subscription.listeners.subscribe(listener);\n            });\n          }\n        }\n      };\n    }\n\n    return hoistNonReactStatics(Connect, WrappedComponent);\n  };\n}\n\nvar hasOwn = Object.prototype.hasOwnProperty;\n\nfunction is(x, y) {\n  if (x === y) {\n    return x !== 0 || y !== 0 || 1 / x === 1 / y;\n  } else {\n    return x !== x && y !== y;\n  }\n}\n\nfunction shallowEqual(objA, objB) {\n  if (is(objA, objB)) return true;\n\n  if ((typeof objA === 'undefined' ? 'undefined' : _typeof(objA)) !== 'object' || objA === null || (typeof objB === 'undefined' ? 'undefined' : _typeof(objB)) !== 'object' || objB === null) {\n    return false;\n  }\n\n  var keysA = Object.keys(objA);\n  var keysB = Object.keys(objB);\n\n  if (keysA.length !== keysB.length) return false;\n\n  for (var i = 0; i < keysA.length; i++) {\n    if (!hasOwn.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) {\n      return false;\n    }\n  }\n\n  return true;\n}\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = (typeof global === 'undefined' ? 'undefined' : _typeof(global)) == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = (typeof self === 'undefined' ? 'undefined' : _typeof(self)) == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Built-in value references. */\nvar _Symbol = root.Symbol;\n\n/** Used for built-in method references. */\nvar objectProto$1 = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty$1 = objectProto$1.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto$1.toString;\n\n/** Built-in value references. */\nvar symToStringTag$1 = _Symbol ? _Symbol.toStringTag : undefined;\n\n/**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\nfunction getRawTag(value) {\n  var isOwn = hasOwnProperty$1.call(value, symToStringTag$1),\n      tag = value[symToStringTag$1];\n\n  try {\n    value[symToStringTag$1] = undefined;\n    var unmasked = true;\n  } catch (e) {}\n\n  var result = nativeObjectToString.call(value);\n  if (unmasked) {\n    if (isOwn) {\n      value[symToStringTag$1] = tag;\n    } else {\n      delete value[symToStringTag$1];\n    }\n  }\n  return result;\n}\n\n/** Used for built-in method references. */\nvar objectProto$2 = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString$1 = objectProto$2.toString;\n\n/**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\nfunction objectToString(value) {\n  return nativeObjectToString$1.call(value);\n}\n\n/** `Object#toString` result references. */\nvar nullTag = '[object Null]';\nvar undefinedTag = '[object Undefined]';\n\n/** Built-in value references. */\nvar symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;\n\n/**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n  if (value == null) {\n    return value === undefined ? undefinedTag : nullTag;\n  }\n  return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);\n}\n\n/**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\nfunction overArg(func, transform) {\n  return function (arg) {\n    return func(transform(arg));\n  };\n}\n\n/** Built-in value references. */\nvar getPrototype = overArg(Object.getPrototypeOf, Object);\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return value != null && (typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'object';\n}\n\n/** `Object#toString` result references. */\nvar objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar funcProto = Function.prototype;\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to infer the `Object` constructor. */\nvar objectCtorString = funcToString.call(Object);\n\n/**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\nfunction isPlainObject(value) {\n  if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n    return false;\n  }\n  var proto = getPrototype(value);\n  if (proto === null) {\n    return true;\n  }\n  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n  return typeof Ctor == 'function' && Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString;\n}\n\nfunction verifyPlainObject(value, displayName, methodName) {\n  if (!isPlainObject(value)) {\n    warning(methodName + '() in ' + displayName + ' must return a plain object. Instead received ' + value + '.');\n  }\n}\n\nfunction wrapMapToPropsConstant(getConstant) {\n  return function initConstantSelector(dispatch, options) {\n    var constant = getConstant(dispatch, options);\n\n    function constantSelector() {\n      return constant;\n    }\n    constantSelector.dependsOnOwnProps = false;\n    return constantSelector;\n  };\n}\n\n// dependsOnOwnProps is used by createMapToPropsProxy to determine whether to pass props as args\n// to the mapToProps function being wrapped. It is also used by makePurePropsSelector to determine\n// whether mapToProps needs to be invoked when props have changed.\n// \n// A length of one signals that mapToProps does not depend on props from the parent component.\n// A length of zero is assumed to mean mapToProps is getting args via arguments or ...args and\n// therefore not reporting its length accurately..\nfunction getDependsOnOwnProps(mapToProps) {\n  return mapToProps.dependsOnOwnProps !== null && mapToProps.dependsOnOwnProps !== undefined ? Boolean(mapToProps.dependsOnOwnProps) : mapToProps.length !== 1;\n}\n\n// Used by whenMapStateToPropsIsFunction and whenMapDispatchToPropsIsFunction,\n// this function wraps mapToProps in a proxy function which does several things:\n// \n//  * Detects whether the mapToProps function being called depends on props, which\n//    is used by selectorFactory to decide if it should reinvoke on props changes.\n//    \n//  * On first call, handles mapToProps if returns another function, and treats that\n//    new function as the true mapToProps for subsequent calls.\n//    \n//  * On first call, verifies the first result is a plain object, in order to warn\n//    the developer that their mapToProps function is not returning a valid result.\n//    \nfunction wrapMapToPropsFunc(mapToProps, methodName) {\n  return function initProxySelector(dispatch, _ref) {\n    var displayName = _ref.displayName;\n\n    var proxy = function mapToPropsProxy(stateOrDispatch, ownProps) {\n      return proxy.dependsOnOwnProps ? proxy.mapToProps(stateOrDispatch, ownProps) : proxy.mapToProps(stateOrDispatch);\n    };\n\n    // allow detectFactoryAndVerify to get ownProps\n    proxy.dependsOnOwnProps = true;\n\n    proxy.mapToProps = function detectFactoryAndVerify(stateOrDispatch, ownProps) {\n      proxy.mapToProps = mapToProps;\n      proxy.dependsOnOwnProps = getDependsOnOwnProps(mapToProps);\n      var props = proxy(stateOrDispatch, ownProps);\n\n      if (typeof props === 'function') {\n        proxy.mapToProps = props;\n        proxy.dependsOnOwnProps = getDependsOnOwnProps(props);\n        props = proxy(stateOrDispatch, ownProps);\n      }\n\n      verifyPlainObject(props, displayName, methodName);\n\n      return props;\n    };\n\n    return proxy;\n  };\n}\n\nfunction whenMapDispatchToPropsIsFunction(mapDispatchToProps) {\n  return typeof mapDispatchToProps === 'function' ? wrapMapToPropsFunc(mapDispatchToProps, 'mapDispatchToProps') : undefined;\n}\n\nfunction whenMapDispatchToPropsIsMissing(mapDispatchToProps) {\n  return !mapDispatchToProps ? wrapMapToPropsConstant(function (dispatch) {\n    return { dispatch: dispatch };\n  }) : undefined;\n}\n\nfunction whenMapDispatchToPropsIsObject(mapDispatchToProps) {\n  return mapDispatchToProps && (typeof mapDispatchToProps === 'undefined' ? 'undefined' : _typeof(mapDispatchToProps)) === 'object' ? wrapMapToPropsConstant(function (dispatch) {\n    return Object(__WEBPACK_IMPORTED_MODULE_1_redux__[\"b\" /* bindActionCreators */])(mapDispatchToProps, dispatch);\n  }) : undefined;\n}\n\nvar defaultMapDispatchToPropsFactories = [whenMapDispatchToPropsIsFunction, whenMapDispatchToPropsIsMissing, whenMapDispatchToPropsIsObject];\n\nfunction whenMapStateToPropsIsFunction(mapStateToProps) {\n  return typeof mapStateToProps === 'function' ? wrapMapToPropsFunc(mapStateToProps, 'mapStateToProps') : undefined;\n}\n\nfunction whenMapStateToPropsIsMissing(mapStateToProps) {\n  return !mapStateToProps ? wrapMapToPropsConstant(function () {\n    return {};\n  }) : undefined;\n}\n\nvar defaultMapStateToPropsFactories = [whenMapStateToPropsIsFunction, whenMapStateToPropsIsMissing];\n\nfunction defaultMergeProps(stateProps, dispatchProps, ownProps) {\n  return _extends({}, ownProps, stateProps, dispatchProps);\n}\n\nfunction wrapMergePropsFunc(mergeProps) {\n  return function initMergePropsProxy(dispatch, _ref) {\n    var displayName = _ref.displayName,\n        pure = _ref.pure,\n        areMergedPropsEqual = _ref.areMergedPropsEqual;\n\n    var hasRunOnce = false;\n    var mergedProps = void 0;\n\n    return function mergePropsProxy(stateProps, dispatchProps, ownProps) {\n      var nextMergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n\n      if (hasRunOnce) {\n        if (!pure || !areMergedPropsEqual(nextMergedProps, mergedProps)) mergedProps = nextMergedProps;\n      } else {\n        hasRunOnce = true;\n        mergedProps = nextMergedProps;\n\n        verifyPlainObject(mergedProps, displayName, 'mergeProps');\n      }\n\n      return mergedProps;\n    };\n  };\n}\n\nfunction whenMergePropsIsFunction(mergeProps) {\n  return typeof mergeProps === 'function' ? wrapMergePropsFunc(mergeProps) : undefined;\n}\n\nfunction whenMergePropsIsOmitted(mergeProps) {\n  return !mergeProps ? function () {\n    return defaultMergeProps;\n  } : undefined;\n}\n\nvar defaultMergePropsFactories = [whenMergePropsIsFunction, whenMergePropsIsOmitted];\n\nfunction verify(selector, methodName, displayName) {\n  if (!selector) {\n    throw new Error('Unexpected value for ' + methodName + ' in ' + displayName + '.');\n  } else if (methodName === 'mapStateToProps' || methodName === 'mapDispatchToProps') {\n    if (!selector.hasOwnProperty('dependsOnOwnProps')) {\n      warning('The selector for ' + methodName + ' of ' + displayName + ' did not specify a value for dependsOnOwnProps.');\n    }\n  }\n}\n\nfunction verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, displayName) {\n  verify(mapStateToProps, 'mapStateToProps', displayName);\n  verify(mapDispatchToProps, 'mapDispatchToProps', displayName);\n  verify(mergeProps, 'mergeProps', displayName);\n}\n\nfunction impureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch) {\n  return function impureFinalPropsSelector(state, ownProps) {\n    return mergeProps(mapStateToProps(state, ownProps), mapDispatchToProps(dispatch, ownProps), ownProps);\n  };\n}\n\nfunction pureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, _ref) {\n  var areStatesEqual = _ref.areStatesEqual,\n      areOwnPropsEqual = _ref.areOwnPropsEqual,\n      areStatePropsEqual = _ref.areStatePropsEqual;\n\n  var hasRunAtLeastOnce = false;\n  var state = void 0;\n  var ownProps = void 0;\n  var stateProps = void 0;\n  var dispatchProps = void 0;\n  var mergedProps = void 0;\n\n  function handleFirstCall(firstState, firstOwnProps) {\n    state = firstState;\n    ownProps = firstOwnProps;\n    stateProps = mapStateToProps(state, ownProps);\n    dispatchProps = mapDispatchToProps(dispatch, ownProps);\n    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n    hasRunAtLeastOnce = true;\n    return mergedProps;\n  }\n\n  function handleNewPropsAndNewState() {\n    stateProps = mapStateToProps(state, ownProps);\n\n    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);\n\n    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n    return mergedProps;\n  }\n\n  function handleNewProps() {\n    if (mapStateToProps.dependsOnOwnProps) stateProps = mapStateToProps(state, ownProps);\n\n    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);\n\n    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n    return mergedProps;\n  }\n\n  function handleNewState() {\n    var nextStateProps = mapStateToProps(state, ownProps);\n    var statePropsChanged = !areStatePropsEqual(nextStateProps, stateProps);\n    stateProps = nextStateProps;\n\n    if (statePropsChanged) mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n\n    return mergedProps;\n  }\n\n  function handleSubsequentCalls(nextState, nextOwnProps) {\n    var propsChanged = !areOwnPropsEqual(nextOwnProps, ownProps);\n    var stateChanged = !areStatesEqual(nextState, state);\n    state = nextState;\n    ownProps = nextOwnProps;\n\n    if (propsChanged && stateChanged) return handleNewPropsAndNewState();\n    if (propsChanged) return handleNewProps();\n    if (stateChanged) return handleNewState();\n    return mergedProps;\n  }\n\n  return function pureFinalPropsSelector(nextState, nextOwnProps) {\n    return hasRunAtLeastOnce ? handleSubsequentCalls(nextState, nextOwnProps) : handleFirstCall(nextState, nextOwnProps);\n  };\n}\n\n// TODO: Add more comments\n\n// If pure is true, the selector returned by selectorFactory will memoize its results,\n// allowing connectAdvanced's shouldComponentUpdate to return false if final\n// props have not changed. If false, the selector will always return a new\n// object and shouldComponentUpdate will always return true.\n\nfunction finalPropsSelectorFactory(dispatch, _ref2) {\n  var initMapStateToProps = _ref2.initMapStateToProps,\n      initMapDispatchToProps = _ref2.initMapDispatchToProps,\n      initMergeProps = _ref2.initMergeProps,\n      options = objectWithoutProperties(_ref2, ['initMapStateToProps', 'initMapDispatchToProps', 'initMergeProps']);\n\n  var mapStateToProps = initMapStateToProps(dispatch, options);\n  var mapDispatchToProps = initMapDispatchToProps(dispatch, options);\n  var mergeProps = initMergeProps(dispatch, options);\n\n  {\n    verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, options.displayName);\n  }\n\n  var selectorFactory = options.pure ? pureFinalPropsSelectorFactory : impureFinalPropsSelectorFactory;\n\n  return selectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, options);\n}\n\n/*\n  connect is a facade over connectAdvanced. It turns its args into a compatible\n  selectorFactory, which has the signature:\n\n    (dispatch, options) => (nextState, nextOwnProps) => nextFinalProps\n  \n  connect passes its args to connectAdvanced as options, which will in turn pass them to\n  selectorFactory each time a Connect component instance is instantiated or hot reloaded.\n\n  selectorFactory returns a final props selector from its mapStateToProps,\n  mapStateToPropsFactories, mapDispatchToProps, mapDispatchToPropsFactories, mergeProps,\n  mergePropsFactories, and pure args.\n\n  The resulting final props selector is called by the Connect component instance whenever\n  it receives new props or store state.\n */\n\nfunction match(arg, factories, name) {\n  for (var i = factories.length - 1; i >= 0; i--) {\n    var result = factories[i](arg);\n    if (result) return result;\n  }\n\n  return function (dispatch, options) {\n    throw new Error('Invalid value of type ' + (typeof arg === 'undefined' ? 'undefined' : _typeof(arg)) + ' for ' + name + ' argument when connecting component ' + options.wrappedComponentName + '.');\n  };\n}\n\nfunction strictEqual(a, b) {\n  return a === b;\n}\n\n// createConnect with default args builds the 'official' connect behavior. Calling it with\n// different options opens up some testing and extensibility scenarios\nfunction createConnect() {\n  var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},\n      _ref$connectHOC = _ref.connectHOC,\n      connectHOC = _ref$connectHOC === undefined ? connectAdvanced : _ref$connectHOC,\n      _ref$mapStateToPropsF = _ref.mapStateToPropsFactories,\n      mapStateToPropsFactories = _ref$mapStateToPropsF === undefined ? defaultMapStateToPropsFactories : _ref$mapStateToPropsF,\n      _ref$mapDispatchToPro = _ref.mapDispatchToPropsFactories,\n      mapDispatchToPropsFactories = _ref$mapDispatchToPro === undefined ? defaultMapDispatchToPropsFactories : _ref$mapDispatchToPro,\n      _ref$mergePropsFactor = _ref.mergePropsFactories,\n      mergePropsFactories = _ref$mergePropsFactor === undefined ? defaultMergePropsFactories : _ref$mergePropsFactor,\n      _ref$selectorFactory = _ref.selectorFactory,\n      selectorFactory = _ref$selectorFactory === undefined ? finalPropsSelectorFactory : _ref$selectorFactory;\n\n  return function connect(mapStateToProps, mapDispatchToProps, mergeProps) {\n    var _ref2 = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};\n\n    var _ref2$pure = _ref2.pure,\n        pure = _ref2$pure === undefined ? true : _ref2$pure,\n        _ref2$areStatesEqual = _ref2.areStatesEqual,\n        areStatesEqual = _ref2$areStatesEqual === undefined ? strictEqual : _ref2$areStatesEqual,\n        _ref2$areOwnPropsEqua = _ref2.areOwnPropsEqual,\n        areOwnPropsEqual = _ref2$areOwnPropsEqua === undefined ? shallowEqual : _ref2$areOwnPropsEqua,\n        _ref2$areStatePropsEq = _ref2.areStatePropsEqual,\n        areStatePropsEqual = _ref2$areStatePropsEq === undefined ? shallowEqual : _ref2$areStatePropsEq,\n        _ref2$areMergedPropsE = _ref2.areMergedPropsEqual,\n        areMergedPropsEqual = _ref2$areMergedPropsE === undefined ? shallowEqual : _ref2$areMergedPropsE,\n        extraOptions = objectWithoutProperties(_ref2, ['pure', 'areStatesEqual', 'areOwnPropsEqual', 'areStatePropsEqual', 'areMergedPropsEqual']);\n\n    var initMapStateToProps = match(mapStateToProps, mapStateToPropsFactories, 'mapStateToProps');\n    var initMapDispatchToProps = match(mapDispatchToProps, mapDispatchToPropsFactories, 'mapDispatchToProps');\n    var initMergeProps = match(mergeProps, mergePropsFactories, 'mergeProps');\n\n    return connectHOC(selectorFactory, _extends({\n      // used in error messages\n      methodName: 'connect',\n\n      // used to compute Connect's displayName from the wrapped component's displayName.\n      getDisplayName: function getDisplayName(name) {\n        return 'Connect(' + name + ')';\n      },\n\n      // if mapStateToProps is falsy, the Connect component doesn't subscribe to store state changes\n      shouldHandleStateChanges: Boolean(mapStateToProps),\n\n      // passed through to selectorFactory\n      initMapStateToProps: initMapStateToProps,\n      initMapDispatchToProps: initMapDispatchToProps,\n      initMergeProps: initMergeProps,\n      pure: pure,\n      areStatesEqual: areStatesEqual,\n      areOwnPropsEqual: areOwnPropsEqual,\n      areStatePropsEqual: areStatePropsEqual,\n      areMergedPropsEqual: areMergedPropsEqual\n\n    }, extraOptions));\n  };\n}\n\nvar connect = createConnect();\n\nvar index = { Provider: Provider, connect: connect, connectAdvanced: connectAdvanced };\n\n/* unused harmony default export */ var _unused_webpack_default_export = (index);\n//# sourceMappingURL=preact-redux.esm.js.map\n/* WEBPACK VAR INJECTION */}.call(__webpack_exports__, __webpack_require__(\"Mhc0\")))\n\n/***/ }),\n\n/***/ \"E7HD\":\n/***/ (function(module, exports) {\n\nfunction _assertThisInitialized(self) {\n  if (self === void 0) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n\n  return self;\n}\n\nmodule.exports = _assertThisInitialized;\n\n/***/ }),\n\n/***/ \"EEhW\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* unused harmony export sendMessage */\n/* unused harmony export receiveMessage */\n/* unused harmony export removeMessage */\n/* unused harmony export receiveQuestion */\n/* unused harmony export removeQuestion */\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"e\", function() { return sendMessageToFirebase; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"a\", function() { return attachMessageListeners; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"f\", function() { return unattachMessageListeners; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"c\", function() { return publishQuestionToFirebase; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"b\", function() { return attachQuestionListeners; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"g\", function() { return unattachQuestionListeners; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"d\", function() { return saveAvatarToFirebase; });\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0____ = __webpack_require__(\"82jB\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__constants__ = __webpack_require__(\"mV6u\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__store__ = __webpack_require__(\"vdRI\");\n\n\n\n\nvar sendMessage = function sendMessage(message) {\n\treturn { type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"l\" /* SEND_MESSAGE */], message: message };\n};\nvar receiveMessage = function receiveMessage(message) {\n\treturn { type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"h\" /* RECEIVE_MESSAGE */], message: message };\n};\nvar removeMessage = function removeMessage(message) {\n\treturn { type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"j\" /* REMOVE_MESSAGE */], message: message };\n};\nvar receiveQuestion = function receiveQuestion(question) {\n\treturn { type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"i\" /* RECEIVE_QUESTION */], question: question };\n};\nvar removeQuestion = function removeQuestion(question) {\n\treturn { type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"k\" /* REMOVE_QUESTION */], question: question };\n};\n\nfunction getChannelFromStore() {\n\tvar channel = 'main';\n\n\ttry {\n\t\tchannel = __WEBPACK_IMPORTED_MODULE_2__store__[\"a\" /* default */].getState().channel.channel;\n\t} catch (e) {}\n\n\treturn channel;\n}\n\nvar sendMessageToFirebase = function sendMessageToFirebase(message) {\n\tvar channel = getChannelFromStore();\n\n\tconsole.log('addMessageToFirebase()', channel, message);\n\t__WEBPACK_IMPORTED_MODULE_0____[\"b\" /* database */].ref('chatMessages/' + channel).push(message);\n};\n\nvar attachMessageListeners = function attachMessageListeners(dispatch) {\n\tvar channel = getChannelFromStore();\n\n\tvar dbRef = __WEBPACK_IMPORTED_MODULE_0____[\"b\" /* database */].ref('chatMessages/' + channel).orderByKey().limitToLast(100);\n\n\tunattachMessageListeners(channel); //in case it is already attached\n\n\tdbRef.on('child_added', function (snap) {\n\t\tdispatch(receiveMessage(snap.val())); //fire redux RECEIVE action\n\t});\n\n\tdbRef.on('child_removed', function (snap) {\n\t\tdispatch(removeMessage(snap.val())); //fire redux REMOVE action\n\t});\n};\n\nvar unattachMessageListeners = function unattachMessageListeners(channel) {\n\tvar dbRef = __WEBPACK_IMPORTED_MODULE_0____[\"b\" /* database */].ref('chatMessages/' + channel);\n\tdbRef.off('child_added');\n\tdbRef.off('child_removed');\n};\n\nvar publishQuestionToFirebase = function publishQuestionToFirebase(question) {\n\tvar channel = getChannelFromStore();\n\n\t__WEBPACK_IMPORTED_MODULE_0____[\"b\" /* database */].ref('questions/' + channel).push(question);\n};\n\nvar attachQuestionListeners = function attachQuestionListeners(dispatch) {\n\tvar channel = getChannelFromStore();\n\n\tvar dbRef = __WEBPACK_IMPORTED_MODULE_0____[\"b\" /* database */].ref('questions/' + channel).orderByKey().limitToLast(100);\n\n\tdbRef.on('child_added', function (snap) {\n\t\tdispatch(receiveQuestion(snap.val())); //fire redux RECEIVE action\n\t});\n\n\tdbRef.on('child_removed', function (snap) {\n\t\tdispatch(removeQuestion(snap.val())); //fire redux REMOVE action\n\t});\n};\n\nvar unattachQuestionListeners = function unattachQuestionListeners(channel) {\n\tvar dbRef = __WEBPACK_IMPORTED_MODULE_0____[\"b\" /* database */].ref('questions/' + channel);\n\tdbRef.off('child_added');\n\tdbRef.off('child_removed');\n};\n\nvar saveAvatarToFirebase = function saveAvatarToFirebase(dispatch, file) {\n\tvar metadata = {\n\t\tcontentType: 'image/jpeg'\n\t};\n\n\tvar ext = file.name.substr(file.name.length - 3).toLowerCase();\n\tif (['jpg', 'gif', 'png'].indexOf(ext) < 0) {\n\t\tvar _payload = { status: 'error', description: 'invalid file type' };\n\t\tdispatch({ type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"n\" /* SET_AVATAR_STATUS */], payload: _payload });\n\t\treturn false;\n\t}\n\n\tvar payload = { status: 'waiting', description: null };\n\tdispatch({ type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"n\" /* SET_AVATAR_STATUS */], payload: payload });\n\n\tvar currentUser = __WEBPACK_IMPORTED_MODULE_2__store__[\"a\" /* default */].getState().authentication.user;\n\n\tvar uploadTask = __WEBPACK_IMPORTED_MODULE_0____[\"d\" /* storage */].ref().child('images/' + currentUser.uid + '/avatar.jpg').put(file, metadata);\n\n\tuploadTask.on('state_changed', function (snapshot) {\n\t\tvar progress = snapshot.bytesTransferred / snapshot.totalBytes * 100;\n\t\tconsole.log('Upload is ' + progress + '% done');\n\t\tswitch (snapshot.state) {\n\t\t\tcase 'paused':\n\t\t\t\tconsole.log('Upload is paused');\n\t\t\t\tbreak;\n\t\t\tcase 'running':\n\t\t\t\tconsole.log('Upload is running');\n\t\t\t\tbreak;\n\t\t}\n\t}, function (error) {\n\t\tconsole.log('an error occurred');\n\t\tvar payload = { status: 'error', description: error.code };\n\t\tdispatch({ type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"n\" /* SET_AVATAR_STATUS */], payload: payload });\n\t}, function () {\n\t\tuploadTask.snapshot.ref.getDownloadURL().then(function (downloadURL) {\n\t\t\tconsole.log('File is available at', downloadURL);\n\n\t\t\tcurrentUser.updateProfile({\n\t\t\t\tphotoURL: downloadURL\n\t\t\t}).then(function () {\n\t\t\t\t// Update successful.\n\t\t\t\tvar payload = { status: null, description: null };\n\t\t\t\tdispatch({ type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"n\" /* SET_AVATAR_STATUS */], payload: payload });\n\t\t\t}).catch(function (error) {\n\t\t\t\t// An error happened.\n\t\t\t\tvar payload = { status: error, description: 'unknown error' };\n\t\t\t\tdispatch({ type: __WEBPACK_IMPORTED_MODULE_1__constants__[\"n\" /* SET_AVATAR_STATUS */], payload: payload });\n\t\t\t});\n\t\t});\n\t});\n};\n\n/***/ }),\n\n/***/ \"EQDb\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__foundation__ = __webpack_require__(\"uJAj\");\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n/**\n * @template F\n */\n\nvar MDCComponent = function () {\n  /**\n   * @param {!Element} root\n   * @return {!MDCComponent}\n   */\n  MDCComponent.attachTo = function attachTo(root) {\n    // Subclasses which extend MDCBase should provide an attachTo() method that takes a root element and\n    // returns an instantiated component with its root set to that element. Also note that in the cases of\n    // subclasses, an explicit foundation class will not have to be passed in; it will simply be initialized\n    // from getDefaultFoundation().\n    return new MDCComponent(root, new __WEBPACK_IMPORTED_MODULE_0__foundation__[\"a\" /* default */]());\n  };\n\n  /**\n   * @param {!Element} root\n   * @param {F=} foundation\n   * @param {...?} args\n   */\n\n\n  function MDCComponent(root) {\n    var foundation = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;\n\n    _classCallCheck(this, MDCComponent);\n\n    /** @protected {!Element} */\n    this.root_ = root;\n\n    for (var _len = arguments.length, args = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {\n      args[_key - 2] = arguments[_key];\n    }\n\n    this.initialize.apply(this, args);\n    // Note that we initialize foundation here and not within the constructor's default param so that\n    // this.root_ is defined and can be used within the foundation class.\n    /** @protected {!F} */\n    this.foundation_ = foundation === undefined ? this.getDefaultFoundation() : foundation;\n    this.foundation_.init();\n    this.initialSyncWithDOM();\n  }\n\n  MDCComponent.prototype.initialize = function initialize() /* ...args */{}\n  // Subclasses can override this to do any additional setup work that would be considered part of a\n  // \"constructor\". Essentially, it is a hook into the parent constructor before the foundation is\n  // initialized. Any additional arguments besides root and foundation will be passed in here.\n\n\n  /**\n   * @return {!F} foundation\n   */\n  ;\n\n  MDCComponent.prototype.getDefaultFoundation = function getDefaultFoundation() {\n    // Subclasses must override this method to return a properly configured foundation class for the\n    // component.\n    throw new Error('Subclasses must override getDefaultFoundation to return a properly configured ' + 'foundation class');\n  };\n\n  MDCComponent.prototype.initialSyncWithDOM = function initialSyncWithDOM() {\n    // Subclasses should override this method if they need to perform work to synchronize with a host DOM\n    // object. An example of this would be a form control wrapper that needs to synchronize its internal state\n    // to some property or attribute of the host DOM. 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Object.defineProperty(a, b, { configurable: !0, enumerable: !0, value: c }) : a[b] = c;\n  }function K(a, b) {\n    if (b) for (var c in b) {\n      b.hasOwnProperty(c) && J(a, c, b[c]);\n    }\n  }function Ne(a) {\n    var b = {};K(b, a);return b;\n  }function Oe(a) {\n    var b = {},\n        c;for (c in a) {\n      a.hasOwnProperty(c) && (b[c] = a[c]);\n    }return b;\n  }\n  function Pe(a, b) {\n    if (!b || !b.length) return !0;if (!a) return !1;for (var c = 0; c < b.length; c++) {\n      var d = a[b[c]];if (void 0 === d || null === d || \"\" === d) return !1;\n    }return !0;\n  }function Qe(a) {\n    var b = a;if (\"object\" == typeof a && null != a) {\n      b = \"length\" in a ? [] : {};for (var c in a) {\n        J(b, c, Qe(a[c]));\n      }\n    }return b;\n  };function Re(a) {\n    var b = {},\n        c = a[Se],\n        d = a[Te];a = a[Ue];if (!a || a != Ve && !c) throw Error(\"Invalid provider user info!\");b[We] = d || null;b[Xe] = c || null;J(this, Ye, a);J(this, Ze, Qe(b));\n  }var Ve = \"EMAIL_SIGNIN\",\n      Se = \"email\",\n      Te = \"newEmail\",\n      Ue = \"requestType\",\n      Xe = \"email\",\n      We = \"fromEmail\",\n      Ze = \"data\",\n      Ye = \"operation\";function L(a, b) {\n    this.code = $e + a;this.message = b || af[a] || \"\";\n  }t(L, Error);L.prototype.C = function () {\n    return { code: this.code, message: this.message };\n  };L.prototype.toJSON = function () {\n    return this.C();\n  };function bf(a) {\n    var b = a && a.code;return b ? new L(b.substring($e.length), a.message) : null;\n  }\n  var $e = \"auth/\",\n      af = { \"argument-error\": \"\", \"app-not-authorized\": \"This app, identified by the domain where it's hosted, is not authorized to use Firebase Authentication with the provided API key. Review your key configuration in the Google API console.\", \"app-not-installed\": \"The requested mobile application corresponding to the identifier (Android package name or iOS bundle ID) provided is not installed on this device.\", \"captcha-check-failed\": \"The reCAPTCHA response token provided is either invalid, expired, already used or the domain associated with it does not match the list of whitelisted domains.\",\n    \"code-expired\": \"The SMS code has expired. Please re-send the verification code to try again.\", \"cordova-not-ready\": \"Cordova framework is not ready.\", \"cors-unsupported\": \"This browser is not supported.\", \"credential-already-in-use\": \"This credential is already associated with a different user account.\", \"custom-token-mismatch\": \"The custom token corresponds to a different audience.\", \"requires-recent-login\": \"This operation is sensitive and requires recent authentication. Log in again before retrying this request.\",\n    \"dynamic-link-not-activated\": \"Please activate Dynamic Links in the Firebase Console and agree to the terms and conditions.\", \"email-already-in-use\": \"The email address is already in use by another account.\", \"expired-action-code\": \"The action code has expired. \", \"cancelled-popup-request\": \"This operation has been cancelled due to another conflicting popup being opened.\", \"internal-error\": \"An internal error has occurred.\", \"invalid-app-credential\": \"The phone verification request contains an invalid application verifier. The reCAPTCHA token response is either invalid or expired.\",\n    \"invalid-app-id\": \"The mobile app identifier is not registed for the current project.\", \"invalid-user-token\": \"This user's credential isn't valid for this project. This can happen if the user's token has been tampered with, or if the user isn't for the project associated with this API key.\", \"invalid-auth-event\": \"An internal error has occurred.\", \"invalid-verification-code\": \"The SMS verification code used to create the phone auth credential is invalid. Please resend the verification code sms and be sure use the verification code provided by the user.\",\n    \"invalid-continue-uri\": \"The continue URL provided in the request is invalid.\", \"invalid-cordova-configuration\": \"The following Cordova plugins must be installed to enable OAuth sign-in: cordova-plugin-buildinfo, cordova-universal-links-plugin, cordova-plugin-browsertab, cordova-plugin-inappbrowser and cordova-plugin-customurlscheme.\", \"invalid-custom-token\": \"The custom token format is incorrect. Please check the documentation.\", \"invalid-dynamic-link-domain\": \"The provided dynamic link domain is not configured or authorized for the current project.\",\n    \"invalid-email\": \"The email address is badly formatted.\", \"invalid-api-key\": \"Your API key is invalid, please check you have copied it correctly.\", \"invalid-cert-hash\": \"The SHA-1 certificate hash provided is invalid.\", \"invalid-credential\": \"The supplied auth credential is malformed or has expired.\", \"invalid-persistence-type\": \"The specified persistence type is invalid. It can only be local, session or none.\", \"invalid-message-payload\": \"The email template corresponding to this action contains invalid characters in its message. Please fix by going to the Auth email templates section in the Firebase Console.\",\n    \"invalid-oauth-provider\": \"EmailAuthProvider is not supported for this operation. This operation only supports OAuth providers.\", \"invalid-oauth-client-id\": \"The OAuth client ID provided is either invalid or does not match the specified API key.\", \"unauthorized-domain\": \"This domain is not authorized for OAuth operations for your Firebase project. Edit the list of authorized domains from the Firebase console.\", \"invalid-action-code\": \"The action code is invalid. This can happen if the code is malformed, expired, or has already been used.\",\n    \"wrong-password\": \"The password is invalid or the user does not have a password.\", \"invalid-phone-number\": \"The format of the phone number provided is incorrect. Please enter the phone number in a format that can be parsed into E.164 format. E.164 phone numbers are written in the format [+][country code][subscriber number including area code].\", \"invalid-provider-id\": \"The specified provider ID is invalid.\", \"invalid-recipient-email\": \"The email corresponding to this action failed to send as the provided recipient email address is invalid.\",\n    \"invalid-sender\": \"The email template corresponding to this action contains an invalid sender email or name. Please fix by going to the Auth email templates section in the Firebase Console.\", \"invalid-verification-id\": \"The verification ID used to create the phone auth credential is invalid.\", \"missing-android-pkg-name\": \"An Android Package Name must be provided if the Android App is required to be installed.\", \"auth-domain-config-required\": \"Be sure to include authDomain when calling firebase.initializeApp(), by following the instructions in the Firebase console.\",\n    \"missing-app-credential\": \"The phone verification request is missing an application verifier assertion. A reCAPTCHA response token needs to be provided.\", \"missing-verification-code\": \"The phone auth credential was created with an empty SMS verification code.\", \"missing-continue-uri\": \"A continue URL must be provided in the request.\", \"missing-iframe-start\": \"An internal error has occurred.\", \"missing-ios-bundle-id\": \"An iOS Bundle ID must be provided if an App Store ID is provided.\", \"missing-or-invalid-nonce\": \"The OIDC ID token requires a valid unhashed nonce.\",\n    \"missing-phone-number\": \"To send verification codes, provide a phone number for the recipient.\", \"missing-verification-id\": \"The phone auth credential was created with an empty verification ID.\", \"app-deleted\": \"This instance of FirebaseApp has been deleted.\", \"account-exists-with-different-credential\": \"An account already exists with the same email address but different sign-in credentials. Sign in using a provider associated with this email address.\", \"network-request-failed\": \"A network error (such as timeout, interrupted connection or unreachable host) has occurred.\",\n    \"no-auth-event\": \"An internal error has occurred.\", \"no-such-provider\": \"User was not linked to an account with the given provider.\", \"null-user\": \"A null user object was provided as the argument for an operation which requires a non-null user object.\", \"operation-not-allowed\": \"The given sign-in provider is disabled for this Firebase project. Enable it in the Firebase console, under the sign-in method tab of the Auth section.\", \"operation-not-supported-in-this-environment\": 'This operation is not supported in the environment this application is running on. \"location.protocol\" must be http, https or chrome-extension and web storage must be enabled.',\n    \"popup-blocked\": \"Unable to establish a connection with the popup. It may have been blocked by the browser.\", \"popup-closed-by-user\": \"The popup has been closed by the user before finalizing the operation.\", \"provider-already-linked\": \"User can only be linked to one identity for the given provider.\", \"quota-exceeded\": \"The project's quota for this operation has been exceeded.\", \"redirect-cancelled-by-user\": \"The redirect operation has been cancelled by the user before finalizing.\", \"redirect-operation-pending\": \"A redirect sign-in operation is already pending.\",\n    \"rejected-credential\": \"The request contains malformed or mismatching credentials.\", timeout: \"The operation has timed out.\", \"user-token-expired\": \"The user's credential is no longer valid. The user must sign in again.\", \"too-many-requests\": \"We have blocked all requests from this device due to unusual activity. Try again later.\", \"unauthorized-continue-uri\": \"The domain of the continue URL is not whitelisted.  Please whitelist the domain in the Firebase console.\", \"unsupported-persistence-type\": \"The current environment does not support the specified persistence type.\",\n    \"user-cancelled\": \"User did not grant your application the permissions it requested.\", \"user-not-found\": \"There is no user record corresponding to this identifier. The user may have been deleted.\", \"user-disabled\": \"The user account has been disabled by an administrator.\", \"user-mismatch\": \"The supplied credentials do not correspond to the previously signed in user.\", \"user-signed-out\": \"\", \"weak-password\": \"The password must be 6 characters long or more.\", \"web-storage-unsupported\": \"This browser is not supported or 3rd party cookies and data may be disabled.\" };function cf(a) {\n    var b = a[df];if (\"undefined\" === typeof b) throw new L(\"missing-continue-uri\");if (\"string\" !== typeof b || \"string\" === typeof b && !b.length) throw new L(\"invalid-continue-uri\");this.h = b;this.b = this.a = null;this.g = !1;var c = a[ef];if (c && \"object\" === typeof c) {\n      b = c[ff];var d = c[gf];c = c[hf];if (\"string\" === typeof b && b.length) {\n        this.a = b;if (\"undefined\" !== typeof d && \"boolean\" !== typeof d) throw new L(\"argument-error\", gf + \" property must be a boolean when specified.\");this.g = !!d;if (\"undefined\" !== typeof c && (\"string\" !== typeof c || \"string\" === typeof c && !c.length)) throw new L(\"argument-error\", hf + \" property must be a non empty string when specified.\");this.b = c || null;\n      } else {\n        if (\"undefined\" !== typeof b) throw new L(\"argument-error\", ff + \" property must be a non empty string when specified.\");if (\"undefined\" !== typeof d || \"undefined\" !== typeof c) throw new L(\"missing-android-pkg-name\");\n      }\n    } else if (\"undefined\" !== typeof c) throw new L(\"argument-error\", ef + \" property must be a non null object when specified.\");this.f = null;if ((b = a[jf]) && \"object\" === typeof b) {\n      if (b = b[kf], \"string\" === typeof b && b.length) this.f = b;else {\n        if (\"undefined\" !== typeof b) throw new L(\"argument-error\", kf + \" property must be a non empty string when specified.\");\n      }\n    } else if (\"undefined\" !== typeof b) throw new L(\"argument-error\", jf + \" property must be a non null object when specified.\");b = a[lf];if (\"undefined\" !== typeof b && \"boolean\" !== typeof b) throw new L(\"argument-error\", lf + \" property must be a boolean when specified.\");this.c = !!b;a = a[mf];if (\"undefined\" !== typeof a && (\"string\" !== typeof a || \"string\" === typeof a && !a.length)) throw new L(\"argument-error\", mf + \" property must be a non empty string when specified.\");this.i = a || null;\n  }var ef = \"android\",\n      mf = \"dynamicLinkDomain\",\n      lf = \"handleCodeInApp\",\n      jf = \"iOS\",\n      df = \"url\",\n      gf = \"installApp\",\n      hf = \"minimumVersion\",\n      ff = \"packageName\",\n      kf = \"bundleId\";\n  function nf(a) {\n    var b = {};b.continueUrl = a.h;b.canHandleCodeInApp = a.c;if (b.androidPackageName = a.a) b.androidMinimumVersion = a.b, b.androidInstallApp = a.g;b.iOSBundleId = a.f;b.dynamicLinkDomain = a.i;for (var c in b) {\n      null === b[c] && delete b[c];\n    }return b;\n  };function of(a) {\n    return Ca(a, function (a) {\n      a = a.toString(16);return 1 < a.length ? a : \"0\" + a;\n    }).join(\"\");\n  };var pf = null,\n      qf = null;function rf(a) {\n    var b = \"\";sf(a, function (a) {\n      b += String.fromCharCode(a);\n    });return b;\n  }function sf(a, b) {\n    function c(b) {\n      for (; d < a.length;) {\n        var c = a.charAt(d++),\n            e = qf[c];if (null != e) return e;if (!/^[\\s\\xa0]*$/.test(c)) throw Error(\"Unknown base64 encoding at char: \" + c);\n      }return b;\n    }tf();for (var d = 0;;) {\n      var e = c(-1),\n          f = c(0),\n          h = c(64),\n          m = c(64);if (64 === m && -1 === e) break;b(e << 2 | f >> 4);64 != h && (b(f << 4 & 240 | h >> 2), 64 != m && b(h << 6 & 192 | m));\n    }\n  }\n  function tf() {\n    if (!pf) {\n      pf = {};qf = {};for (var a = 0; 65 > a; a++) {\n        pf[a] = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\".charAt(a), qf[pf[a]] = a, 62 <= a && (qf[\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.\".charAt(a)] = a);\n      }\n    }\n  };function uf(a) {\n    this.c = a.sub;oa();this.a = a.provider_id || a.firebase && a.firebase.sign_in_provider || null;this.b = !!a.is_anonymous || \"anonymous\" == this.a;\n  }uf.prototype.f = function () {\n    return this.b;\n  };function vf(a) {\n    return (a = wf(a)) && a.sub && a.iss && a.aud && a.exp ? new uf(a) : null;\n  }function wf(a) {\n    if (!a) return null;a = a.split(\".\");if (3 != a.length) return null;a = a[1];for (var b = (4 - a.length % 4) % 4, c = 0; c < b; c++) {\n      a += \".\";\n    }try {\n      return JSON.parse(rf(a));\n    } catch (d) {}return null;\n  };var xf = { $c: { ab: \"https://www.googleapis.com/identitytoolkit/v3/relyingparty/\", ib: \"https://securetoken.googleapis.com/v1/token\", id: \"p\" }, bd: { ab: \"https://staging-www.sandbox.googleapis.com/identitytoolkit/v3/relyingparty/\", ib: \"https://staging-securetoken.sandbox.googleapis.com/v1/token\", id: \"s\" }, cd: { ab: \"https://www-googleapis-test.sandbox.google.com/identitytoolkit/v3/relyingparty/\", ib: \"https://test-securetoken.sandbox.googleapis.com/v1/token\", id: \"t\" } };\n  function yf(a) {\n    for (var b in xf) {\n      if (xf[b].id === a) return a = xf[b], { firebaseEndpoint: a.ab, secureTokenEndpoint: a.ib };\n    }return null;\n  }var zf;zf = yf(\"__EID__\") ? \"__EID__\" : void 0;var Af = \"oauth_consumer_key oauth_nonce oauth_signature oauth_signature_method oauth_timestamp oauth_token oauth_version\".split(\" \"),\n      Bf = [\"client_id\", \"response_type\", \"scope\", \"redirect_uri\", \"state\"],\n      Cf = { Vc: { Ma: \"locale\", Ba: 500, Aa: 600, Na: \"facebook.com\", hb: Bf }, Xc: { Ma: null, Ba: 500, Aa: 620, Na: \"github.com\", hb: Bf }, Yc: { Ma: \"hl\", Ba: 515, Aa: 680, Na: \"google.com\", hb: Bf }, dd: { Ma: \"lang\", Ba: 485, Aa: 705, Na: \"twitter.com\", hb: Af } };function Df(a) {\n    for (var b in Cf) {\n      if (Cf[b].Na == a) return Cf[b];\n    }return null;\n  };function Ef(a) {\n    var b = {};b[\"facebook.com\"] = Ff;b[\"google.com\"] = Gf;b[\"github.com\"] = Hf;b[\"twitter.com\"] = If;var c = a && a[Jf];try {\n      if (c) return b[c] ? new b[c](a) : new Kf(a);if (\"undefined\" !== typeof a[Lf]) return new Mf(a);\n    } catch (d) {}return null;\n  }var Lf = \"idToken\",\n      Jf = \"providerId\";\n  function Mf(a) {\n    var b = a[Jf];if (!b && a[Lf]) {\n      var c = vf(a[Lf]);c && c.a && (b = c.a);\n    }if (!b) throw Error(\"Invalid additional user info!\");if (\"anonymous\" == b || \"custom\" == b) b = null;c = !1;\"undefined\" !== typeof a.isNewUser ? c = !!a.isNewUser : \"identitytoolkit#SignupNewUserResponse\" === a.kind && (c = !0);J(this, \"providerId\", b);J(this, \"isNewUser\", c);\n  }function Kf(a) {\n    Mf.call(this, a);a = ze(a.rawUserInfo || \"{}\");J(this, \"profile\", Qe(a || {}));\n  }t(Kf, Mf);\n  function Ff(a) {\n    Kf.call(this, a);if (\"facebook.com\" != this.providerId) throw Error(\"Invalid provider ID!\");\n  }t(Ff, Kf);function Hf(a) {\n    Kf.call(this, a);if (\"github.com\" != this.providerId) throw Error(\"Invalid provider ID!\");J(this, \"username\", this.profile && this.profile.login || null);\n  }t(Hf, Kf);function Gf(a) {\n    Kf.call(this, a);if (\"google.com\" != this.providerId) throw Error(\"Invalid provider ID!\");\n  }t(Gf, Kf);\n  function If(a) {\n    Kf.call(this, a);if (\"twitter.com\" != this.providerId) throw Error(\"Invalid provider ID!\");J(this, \"username\", a.screenName || null);\n  }t(If, Kf);function Nf(a) {\n    this.a = dd(a);\n  };function Of(a) {\n    var b = dd(a),\n        c = cd(b, \"link\"),\n        d = cd(dd(c), \"link\");b = cd(b, \"deep_link_id\");return cd(dd(b), \"link\") || b || d || c || a;\n  };function Pf(a, b) {\n    return a.then(function (a) {\n      if (a[M]) {\n        var c = vf(a[M]);if (!c || b != c.c) throw new L(\"user-mismatch\");return a;\n      }throw new L(\"user-mismatch\");\n    }).s(function (a) {\n      throw a && a.code && a.code == $e + \"user-not-found\" ? new L(\"user-mismatch\") : a;\n    });\n  }function Qf(a, b) {\n    if (b) this.a = b;else throw new L(\"internal-error\", \"failed to construct a credential\");J(this, \"providerId\", a);J(this, \"signInMethod\", a);\n  }Qf.prototype.la = function (a) {\n    return Rf(a, Sf(this));\n  };\n  Qf.prototype.b = function (a, b) {\n    var c = Sf(this);c.idToken = b;return Tf(a, c);\n  };Qf.prototype.f = function (a, b) {\n    return Pf(Uf(a, Sf(this)), b);\n  };function Sf(a) {\n    return { pendingToken: a.a, requestUri: \"http://localhost\" };\n  }Qf.prototype.C = function () {\n    return { providerId: this.providerId, signInMethod: this.signInMethod, pendingToken: this.a };\n  };\n  function Vf(a, b, c) {\n    this.a = null;if (b.idToken || b.accessToken) b.idToken && J(this, \"idToken\", b.idToken), b.accessToken && J(this, \"accessToken\", b.accessToken), b.nonce && !b.pendingToken && J(this, \"nonce\", b.nonce), b.pendingToken && (this.a = b.pendingToken);else if (b.oauthToken && b.oauthTokenSecret) J(this, \"accessToken\", b.oauthToken), J(this, \"secret\", b.oauthTokenSecret);else throw new L(\"internal-error\", \"failed to construct a credential\");J(this, \"providerId\", a);J(this, \"signInMethod\", c);\n  }\n  Vf.prototype.la = function (a) {\n    return Rf(a, Wf(this));\n  };Vf.prototype.b = function (a, b) {\n    var c = Wf(this);c.idToken = b;return Tf(a, c);\n  };Vf.prototype.f = function (a, b) {\n    var c = Wf(this);return Pf(Uf(a, c), b);\n  };\n  function Wf(a) {\n    var b = {};a.idToken && (b.id_token = a.idToken);a.accessToken && (b.access_token = a.accessToken);a.secret && (b.oauth_token_secret = a.secret);b.providerId = a.providerId;a.nonce && !a.a && (b.nonce = a.nonce);b = { postBody: hd(b).toString(), requestUri: \"http://localhost\" };a.a && (delete b.postBody, b.pendingToken = a.a);return b;\n  }\n  Vf.prototype.C = function () {\n    var a = { providerId: this.providerId, signInMethod: this.signInMethod };this.idToken && (a.oauthIdToken = this.idToken);this.accessToken && (a.oauthAccessToken = this.accessToken);this.secret && (a.oauthTokenSecret = this.secret);this.nonce && (a.nonce = this.nonce);this.a && (a.pendingToken = this.a);return a;\n  };function Xf(a, b) {\n    this.Dc = b || [];K(this, { providerId: a, isOAuthProvider: !0 });this.yb = {};this.cb = (Df(a) || {}).Ma || null;this.$a = null;\n  }Xf.prototype.Da = function (a) {\n    this.yb = $a(a);return this;\n  };\n  function Yf(a) {\n    if (\"string\" !== typeof a || 0 != a.indexOf(\"saml.\")) throw new L(\"argument-error\", 'SAML provider IDs must be prefixed with \"saml.\"');Xf.call(this, a, []);\n  }t(Yf, Xf);function N(a) {\n    Xf.call(this, a, Bf);this.a = [];\n  }t(N, Xf);N.prototype.ua = function (a) {\n    Ga(this.a, a) || this.a.push(a);return this;\n  };N.prototype.Eb = function () {\n    return Ja(this.a);\n  };\n  N.prototype.credential = function (a, b, c) {\n    if (!a && !b) throw new L(\"argument-error\", \"credential failed: must provide the ID token and/or the access token.\");return new Vf(this.providerId, { idToken: a || null, accessToken: b || null, nonce: c || null }, this.providerId);\n  };function Zf() {\n    N.call(this, \"facebook.com\");\n  }t(Zf, N);J(Zf, \"PROVIDER_ID\", \"facebook.com\");J(Zf, \"FACEBOOK_SIGN_IN_METHOD\", \"facebook.com\");\n  function $f(a) {\n    if (!a) throw new L(\"argument-error\", \"credential failed: expected 1 argument (the OAuth access token).\");var b = a;q(a) && (b = a.accessToken);return new Zf().credential(null, b);\n  }function ag() {\n    N.call(this, \"github.com\");\n  }t(ag, N);J(ag, \"PROVIDER_ID\", \"github.com\");J(ag, \"GITHUB_SIGN_IN_METHOD\", \"github.com\");function bg(a) {\n    if (!a) throw new L(\"argument-error\", \"credential failed: expected 1 argument (the OAuth access token).\");var b = a;q(a) && (b = a.accessToken);return new ag().credential(null, b);\n  }\n  function cg() {\n    N.call(this, \"google.com\");this.ua(\"profile\");\n  }t(cg, N);J(cg, \"PROVIDER_ID\", \"google.com\");J(cg, \"GOOGLE_SIGN_IN_METHOD\", \"google.com\");function dg(a, b) {\n    var c = a;q(a) && (c = a.idToken, b = a.accessToken);return new cg().credential(c, b);\n  }function eg() {\n    Xf.call(this, \"twitter.com\", Af);\n  }t(eg, Xf);J(eg, \"PROVIDER_ID\", \"twitter.com\");J(eg, \"TWITTER_SIGN_IN_METHOD\", \"twitter.com\");\n  function fg(a, b) {\n    var c = a;q(c) || (c = { oauthToken: a, oauthTokenSecret: b });if (!c.oauthToken || !c.oauthTokenSecret) throw new L(\"argument-error\", \"credential failed: expected 2 arguments (the OAuth access token and secret).\");return new Vf(\"twitter.com\", c, \"twitter.com\");\n  }function gg(a, b, c) {\n    this.a = a;this.c = b;J(this, \"providerId\", \"password\");J(this, \"signInMethod\", c === O.EMAIL_LINK_SIGN_IN_METHOD ? O.EMAIL_LINK_SIGN_IN_METHOD : O.EMAIL_PASSWORD_SIGN_IN_METHOD);\n  }\n  gg.prototype.la = function (a) {\n    return this.signInMethod == O.EMAIL_LINK_SIGN_IN_METHOD ? P(a, hg, { email: this.a, oobCode: this.c }) : P(a, ig, { email: this.a, password: this.c });\n  };gg.prototype.b = function (a, b) {\n    return this.signInMethod == O.EMAIL_LINK_SIGN_IN_METHOD ? P(a, jg, { idToken: b, email: this.a, oobCode: this.c }) : P(a, kg, { idToken: b, email: this.a, password: this.c });\n  };gg.prototype.f = function (a, b) {\n    return Pf(this.la(a), b);\n  };gg.prototype.C = function () {\n    return { email: this.a, password: this.c, signInMethod: this.signInMethod };\n  };\n  function O() {\n    K(this, { providerId: \"password\", isOAuthProvider: !1 });\n  }function lg(a, b) {\n    b = mg(b);if (!b) throw new L(\"argument-error\", \"Invalid email link!\");return new gg(a, b, O.EMAIL_LINK_SIGN_IN_METHOD);\n  }function mg(a) {\n    a = Of(a);a = new Nf(a);var b = cd(a.a, \"oobCode\") || null;return \"signIn\" === (cd(a.a, \"mode\") || null) && b ? b : null;\n  }K(O, { PROVIDER_ID: \"password\" });K(O, { EMAIL_LINK_SIGN_IN_METHOD: \"emailLink\" });K(O, { EMAIL_PASSWORD_SIGN_IN_METHOD: \"password\" });\n  function ng(a) {\n    if (!(a.Ta && a.Sa || a.Fa && a.$)) throw new L(\"internal-error\");this.a = a;J(this, \"providerId\", \"phone\");J(this, \"signInMethod\", \"phone\");\n  }ng.prototype.la = function (a) {\n    return a.Ua(og(this));\n  };ng.prototype.b = function (a, b) {\n    var c = og(this);c.idToken = b;return P(a, pg, c);\n  };ng.prototype.f = function (a, b) {\n    var c = og(this);c.operation = \"REAUTH\";a = P(a, qg, c);return Pf(a, b);\n  };\n  ng.prototype.C = function () {\n    var a = { providerId: \"phone\" };this.a.Ta && (a.verificationId = this.a.Ta);this.a.Sa && (a.verificationCode = this.a.Sa);this.a.Fa && (a.temporaryProof = this.a.Fa);this.a.$ && (a.phoneNumber = this.a.$);return a;\n  };function og(a) {\n    return a.a.Fa && a.a.$ ? { temporaryProof: a.a.Fa, phoneNumber: a.a.$ } : { sessionInfo: a.a.Ta, code: a.a.Sa };\n  }\n  function rg(a) {\n    try {\n      this.a = a || __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.auth();\n    } catch (b) {\n      throw new L(\"argument-error\", \"Either an instance of firebase.auth.Auth must be passed as an argument to the firebase.auth.PhoneAuthProvider constructor, or the default firebase App instance must be initialized via firebase.initializeApp().\");\n    }K(this, { providerId: \"phone\", isOAuthProvider: !1 });\n  }\n  rg.prototype.Ua = function (a, b) {\n    var c = this.a.b;return B(b.verify()).then(function (d) {\n      if (!l(d)) throw new L(\"argument-error\", \"An implementation of firebase.auth.ApplicationVerifier.prototype.verify() must return a firebase.Promise that resolves with a string.\");switch (b.type) {case \"recaptcha\":\n          return sg(c, { phoneNumber: a, recaptchaToken: d }).then(function (a) {\n            \"function\" === typeof b.reset && b.reset();return a;\n          }, function (a) {\n            \"function\" === typeof b.reset && b.reset();throw a;\n          });default:\n          throw new L(\"argument-error\", 'Only firebase.auth.ApplicationVerifiers with type=\"recaptcha\" are currently supported.');}\n    });\n  };function tg(a, b) {\n    if (!a) throw new L(\"missing-verification-id\");if (!b) throw new L(\"missing-verification-code\");return new ng({ Ta: a, Sa: b });\n  }K(rg, { PROVIDER_ID: \"phone\" });K(rg, { PHONE_SIGN_IN_METHOD: \"phone\" });\n  function ug(a) {\n    if (a.temporaryProof && a.phoneNumber) return new ng({ Fa: a.temporaryProof, $: a.phoneNumber });var b = a && a.providerId;if (!b || \"password\" === b) return null;var c = a && a.oauthAccessToken,\n        d = a && a.oauthTokenSecret,\n        e = a && a.nonce,\n        f = a && a.oauthIdToken,\n        h = a && a.pendingToken;try {\n      switch (b) {case \"google.com\":\n          return dg(f, c);case \"facebook.com\":\n          return $f(c);case \"github.com\":\n          return bg(c);case \"twitter.com\":\n          return fg(c, d);default:\n          return c || d || f || h ? h ? 0 == b.indexOf(\"saml.\") ? new Qf(b, h) : new Vf(b, { pendingToken: h, idToken: a.oauthIdToken,\n            accessToken: a.oauthAccessToken }, b) : new N(b).credential(f, c, e) : null;}\n    } catch (m) {\n      return null;\n    }\n  }function vg(a) {\n    if (!a.isOAuthProvider) throw new L(\"invalid-oauth-provider\");\n  };function wg(a, b, c, d, e, f) {\n    this.b = a;this.c = b || null;this.f = c || null;this.g = d || null;this.h = f || null;this.a = e || null;if (this.f || this.a) {\n      if (this.f && this.a) throw new L(\"invalid-auth-event\");if (this.f && !this.g) throw new L(\"invalid-auth-event\");\n    } else throw new L(\"invalid-auth-event\");\n  }wg.prototype.C = function () {\n    return { type: this.b, eventId: this.c, urlResponse: this.f, sessionId: this.g, postBody: this.h, error: this.a && this.a.C() };\n  };\n  function xg(a) {\n    a = a || {};return a.type ? new wg(a.type, a.eventId, a.urlResponse, a.sessionId, a.error && bf(a.error), a.postBody) : null;\n  }; /*\n     Copyright 2018 Google Inc.\n     Licensed under the Apache License, Version 2.0 (the \"License\");\n     you may not use this file except in compliance with the License.\n     You may obtain a copy of the License at\n     http://www.apache.org/licenses/LICENSE-2.0\n     Unless required by applicable law or agreed to in writing, software\n     distributed under the License is distributed on an \"AS IS\" BASIS,\n     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     See the License for the specific language governing permissions and\n     limitations under the License.\n     */\n  function yg() {\n    this.b = null;this.a = [];\n  }var zg = null;yg.prototype.subscribe = function (a) {\n    var b = this;this.a.push(a);this.b || (this.b = function (a) {\n      for (var c = 0; c < b.a.length; c++) {\n        b.a[c](a);\n      }\n    }, a = I(\"universalLinks.subscribe\", k), \"function\" === typeof a && a(null, this.b));\n  };yg.prototype.unsubscribe = function (a) {\n    w(this.a, function (b) {\n      return b == a;\n    });\n  };function Ag(a) {\n    var b = \"unauthorized-domain\",\n        c = void 0,\n        d = dd(a);a = d.b;d = d.c;\"chrome-extension\" == d ? c = Ka(\"This chrome extension ID (chrome-extension://%s) is not authorized to run this operation. Add it to the OAuth redirect domains list in the Firebase console -> Auth section -> Sign in method tab.\", a) : \"http\" == d || \"https\" == d ? c = Ka(\"This domain (%s) is not authorized to run this operation. Add it to the OAuth redirect domains list in the Firebase console -> Auth section -> Sign in method tab.\", a) : b = \"operation-not-supported-in-this-environment\";\n    L.call(this, b, c);\n  }t(Ag, L);function Bg(a, b, c) {\n    L.call(this, a, c);a = b || {};a.zb && J(this, \"email\", a.zb);a.$ && J(this, \"phoneNumber\", a.$);a.credential && J(this, \"credential\", a.credential);\n  }t(Bg, L);Bg.prototype.C = function () {\n    var a = { code: this.code, message: this.message };this.email && (a.email = this.email);this.phoneNumber && (a.phoneNumber = this.phoneNumber);var b = this.credential && this.credential.C();b && bb(a, b);return a;\n  };Bg.prototype.toJSON = function () {\n    return this.C();\n  };\n  function Cg(a) {\n    if (a.code) {\n      var b = a.code || \"\";0 == b.indexOf($e) && (b = b.substring($e.length));var c = { credential: ug(a) };if (a.email) c.zb = a.email;else if (a.phoneNumber) c.$ = a.phoneNumber;else if (!c.credential) return new L(b, a.message || void 0);return new Bg(b, c, a.message);\n    }return null;\n  };function Dg() {}Dg.prototype.c = null;function Eg(a) {\n    return a.c || (a.c = a.b());\n  };var Fg;function Gg() {}t(Gg, Dg);Gg.prototype.a = function () {\n    var a = Hg(this);return a ? new ActiveXObject(a) : new XMLHttpRequest();\n  };Gg.prototype.b = function () {\n    var a = {};Hg(this) && (a[0] = !0, a[1] = !0);return a;\n  };\n  function Hg(a) {\n    if (!a.f && \"undefined\" == typeof XMLHttpRequest && \"undefined\" != typeof ActiveXObject) {\n      for (var b = [\"MSXML2.XMLHTTP.6.0\", \"MSXML2.XMLHTTP.3.0\", \"MSXML2.XMLHTTP\", \"Microsoft.XMLHTTP\"], c = 0; c < b.length; c++) {\n        var d = b[c];try {\n          return new ActiveXObject(d), a.f = d;\n        } catch (e) {}\n      }throw Error(\"Could not create ActiveXObject. ActiveX might be disabled, or MSXML might not be installed\");\n    }return a.f;\n  }Fg = new Gg();function Ig() {}t(Ig, Dg);Ig.prototype.a = function () {\n    var a = new XMLHttpRequest();if (\"withCredentials\" in a) return a;if (\"undefined\" != typeof XDomainRequest) return new Jg();throw Error(\"Unsupported browser\");\n  };Ig.prototype.b = function () {\n    return {};\n  };\n  function Jg() {\n    this.a = new XDomainRequest();this.readyState = 0;this.onreadystatechange = null;this.responseText = \"\";this.status = -1;this.statusText = \"\";this.a.onload = r(this.ec, this);this.a.onerror = r(this.Fb, this);this.a.onprogress = r(this.fc, this);this.a.ontimeout = r(this.ic, this);\n  }g = Jg.prototype;g.open = function (a, b, c) {\n    if (null != c && !c) throw Error(\"Only async requests are supported.\");this.a.open(a, b);\n  };\n  g.send = function (a) {\n    if (a) {\n      if (\"string\" == typeof a) this.a.send(a);else throw Error(\"Only string data is supported\");\n    } else this.a.send();\n  };g.abort = function () {\n    this.a.abort();\n  };g.setRequestHeader = function () {};g.getResponseHeader = function (a) {\n    return \"content-type\" == a.toLowerCase() ? this.a.contentType : \"\";\n  };g.ec = function () {\n    this.status = 200;this.responseText = this.a.responseText;Kg(this, 4);\n  };g.Fb = function () {\n    this.status = 500;this.responseText = \"\";Kg(this, 4);\n  };g.ic = function () {\n    this.Fb();\n  };\n  g.fc = function () {\n    this.status = 200;Kg(this, 1);\n  };function Kg(a, b) {\n    a.readyState = b;if (a.onreadystatechange) a.onreadystatechange();\n  }g.getAllResponseHeaders = function () {\n    return \"content-type: \" + this.a.contentType;\n  };function Lg(a, b, c) {\n    this.reset(a, b, c, void 0, void 0);\n  }Lg.prototype.a = null;var Mg = 0;Lg.prototype.reset = function (a, b, c, d, e) {\n    \"number\" == typeof e || Mg++;d || oa();delete this.a;\n  };function Ng(a) {\n    this.f = a;this.b = this.c = this.a = null;\n  }function Og(a, b) {\n    this.name = a;this.value = b;\n  }Og.prototype.toString = function () {\n    return this.name;\n  };var Pg = new Og(\"SEVERE\", 1E3),\n      Qg = new Og(\"WARNING\", 900),\n      Rg = new Og(\"CONFIG\", 700),\n      Sg = new Og(\"FINE\", 500);function Tg(a) {\n    if (a.c) return a.c;if (a.a) return Tg(a.a);sa(\"Root logger has no level set.\");return null;\n  }Ng.prototype.log = function (a, b, c) {\n    if (a.value >= Tg(this).value) for (n(b) && (b = b()), a = new Lg(a, String(b), this.f), c && (a.a = c), c = this; c;) {\n      c = c.a;\n    }\n  };var Ug = {},\n      Vg = null;\n  function Wg(a) {\n    Vg || (Vg = new Ng(\"\"), Ug[\"\"] = Vg, Vg.c = Rg);var b;if (!(b = Ug[a])) {\n      b = new Ng(a);var c = a.lastIndexOf(\".\"),\n          d = a.substr(c + 1);c = Wg(a.substr(0, c));c.b || (c.b = {});c.b[d] = b;b.a = c;Ug[a] = b;\n    }return b;\n  };function Xg(a, b) {\n    a && a.log(Sg, b, void 0);\n  };function Yg(a) {\n    this.f = a;\n  }t(Yg, Dg);Yg.prototype.a = function () {\n    return new Zg(this.f);\n  };Yg.prototype.b = function (a) {\n    return function () {\n      return a;\n    };\n  }({});function Zg(a) {\n    F.call(this);this.i = a;this.readyState = $g;this.status = 0;this.responseText = this.statusText = \"\";this.onreadystatechange = null;this.g = new Headers();this.b = null;this.h = \"GET\";this.c = \"\";this.a = !1;this.f = Wg(\"goog.net.FetchXmlHttp\");\n  }t(Zg, F);var $g = 0;g = Zg.prototype;\n  g.open = function (a, b) {\n    if (this.readyState != $g) throw this.abort(), Error(\"Error reopening a connection\");this.h = a;this.c = b;this.readyState = 1;ah(this);\n  };g.send = function (a) {\n    if (1 != this.readyState) throw this.abort(), Error(\"need to call open() first. \");this.a = !0;var b = { headers: this.g, method: this.h, credentials: void 0, cache: void 0 };a && (b.body = a);this.i.fetch(new Request(this.c, b)).then(this.hc.bind(this), this.Gb.bind(this));\n  };\n  g.abort = function () {\n    this.responseText = \"\";this.g = new Headers();this.status = 0;1 <= this.readyState && this.a && 4 != this.readyState && (this.readyState = 4, this.a = !1, ah(this));this.readyState = $g;\n  };g.hc = function (a) {\n    this.a && (this.b || (this.b = a.headers, this.readyState = 2, ah(this)), this.a && (this.readyState = 3, ah(this), this.a && a.text().then(this.gc.bind(this, a), this.Gb.bind(this))));\n  };g.gc = function (a, b) {\n    this.a && (this.status = a.status, this.statusText = a.statusText, this.responseText = b, this.readyState = 4, ah(this));\n  };\n  g.Gb = function (a) {\n    var b = this.f;b && b.log(Qg, \"Failed to fetch url \" + this.c, a instanceof Error ? a : Error(a));this.a && (this.readyState = 4, ah(this));\n  };g.setRequestHeader = function (a, b) {\n    this.g.append(a, b);\n  };g.getResponseHeader = function (a) {\n    return this.b ? this.b.get(a.toLowerCase()) || \"\" : ((a = this.f) && a.log(Qg, \"Attempting to get response header but no headers have been received for url: \" + this.c, void 0), \"\");\n  };\n  g.getAllResponseHeaders = function () {\n    if (!this.b) {\n      var a = this.f;a && a.log(Qg, \"Attempting to get all response headers but no headers have been received for url: \" + this.c, void 0);return \"\";\n    }a = [];for (var b = this.b.entries(), c = b.next(); !c.done;) {\n      c = c.value, a.push(c[0] + \": \" + c[1]), c = b.next();\n    }return a.join(\"\\r\\n\");\n  };function ah(a) {\n    a.onreadystatechange && a.onreadystatechange.call(a);\n  };function bh(a) {\n    F.call(this);this.headers = new Lc();this.D = a || null;this.c = !1;this.w = this.a = null;this.h = this.N = this.m = \"\";this.f = this.I = this.i = this.G = !1;this.g = 0;this.u = null;this.o = ch;this.v = this.O = !1;\n  }t(bh, F);var ch = \"\";bh.prototype.b = Wg(\"goog.net.XhrIo\");var dh = /^https?$/i,\n      eh = [\"POST\", \"PUT\"];\n  function fh(a, b, c, d, e) {\n    if (a.a) throw Error(\"[goog.net.XhrIo] Object is active with another request=\" + a.m + \"; newUri=\" + b);c = c ? c.toUpperCase() : \"GET\";a.m = b;a.h = \"\";a.N = c;a.G = !1;a.c = !0;a.a = a.D ? a.D.a() : Fg.a();a.w = a.D ? Eg(a.D) : Eg(Fg);a.a.onreadystatechange = r(a.Jb, a);try {\n      Xg(a.b, gh(a, \"Opening Xhr\")), a.I = !0, a.a.open(c, String(b), !0), a.I = !1;\n    } catch (h) {\n      Xg(a.b, gh(a, \"Error opening Xhr: \" + h.message));hh(a, h);return;\n    }b = d || \"\";var f = new Lc(a.headers);e && Kc(e, function (a, b) {\n      f.set(b, a);\n    });e = Ea(f.U());d = k.FormData && b instanceof k.FormData;!Ga(eh, c) || e || d || f.set(\"Content-Type\", \"application/x-www-form-urlencoded;charset=utf-8\");f.forEach(function (a, b) {\n      this.a.setRequestHeader(b, a);\n    }, a);a.o && (a.a.responseType = a.o);\"withCredentials\" in a.a && a.a.withCredentials !== a.O && (a.a.withCredentials = a.O);try {\n      ih(a), 0 < a.g && (a.v = jh(a.a), Xg(a.b, gh(a, \"Will abort after \" + a.g + \"ms if incomplete, xhr2 \" + a.v)), a.v ? 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Rh(a, a.i + \"?key=\" + encodeURIComponent(a.b), function (a) {\n        a ? a.error ? d(Wh(a)) : a.access_token && a.refresh_token ? c(a) : d(new L(\"internal-error\")) : d(new L(\"network-request-failed\"));\n      }, \"POST\", hd(b).toString(), a.f, a.l.get()) : d(new L(\"internal-error\"));\n    });\n  }\n  function Xh(a, b, c, d, e, f) {\n    var h = dd(a.g + b);G(h, \"key\", a.b);f && G(h, \"cb\", oa().toString());var m = \"GET\" == c;if (m) for (var p in d) {\n      d.hasOwnProperty(p) && G(h, p, d[p]);\n    }return new A(function (b, f) {\n      Rh(a, h.toString(), function (a) {\n        a ? a.error ? f(Wh(a, e || {})) : b(a) : f(new L(\"network-request-failed\"));\n      }, c, m ? void 0 : Od(ye(d)), a.a, a.h.get());\n    });\n  }function Yh(a) {\n    a = a.email;if (!l(a) || !ge.test(a)) throw new L(\"invalid-email\");\n  }function Zh(a) {\n    \"email\" in a && Yh(a);\n  }\n  function $h(a, b) {\n    return P(a, ai, { identifier: b, continueUri: ve() ? Vd() : \"http://localhost\" }).then(function (a) {\n      return a.allProviders || [];\n    });\n  }function bi(a, b) {\n    return P(a, ai, { identifier: b, continueUri: ve() ? 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Qk(a, b) : C(new L(\"invalid-auth-event\"));\n    } else C(new L(\"invalid-auth-event\"));\n  };\n  function Qk(a, b) {\n    var c = a.c,\n        d = a.b;b.xa(d, c)(a.f, a.g, a.h).then(function (a) {\n      b.ha(d, a, null, c);\n    }).s(function (a) {\n      b.ha(d, null, a, c);\n    });\n  };function Rk() {\n    this.sb = !1;Object.defineProperty(this, \"appVerificationDisabled\", { get: function get() {\n        return this.sb;\n      }, set: function set(a) {\n        this.sb = a;\n      }, enumerable: !1 });\n  };function Sk(a, b) {\n    this.a = b;J(this, \"verificationId\", a);\n  }Sk.prototype.confirm = function (a) {\n    a = tg(this.verificationId, a);return this.a(a);\n  };function Tk(a, b, c, d) {\n    return new rg(a).Ua(b, c).then(function (a) {\n      return new Sk(a, d);\n    });\n  };function Uk(a) {\n    var b = wf(a);if (!(b && b.exp && b.auth_time && b.iat)) throw new L(\"internal-error\", \"An internal error occurred. The token obtained by Firebase appears to be malformed. Please retry the operation.\");K(this, { token: a, expirationTime: Fe(1E3 * b.exp), authTime: Fe(1E3 * b.auth_time), issuedAtTime: Fe(1E3 * b.iat), signInProvider: b.firebase && b.firebase.sign_in_provider ? b.firebase.sign_in_provider : null, claims: b });\n  };function Vk(a, b, c) {\n    this.h = a;this.i = b;this.g = c;this.c = 3E4;this.f = 96E4;this.b = null;this.a = this.c;if (this.f < this.c) throw Error(\"Proactive refresh lower bound greater than upper bound!\");\n  }Vk.prototype.start = function () {\n    this.a = this.c;Wk(this, !0);\n  };function Xk(a, b) {\n    if (b) return a.a = a.c, a.g();b = a.a;a.a *= 2;a.a > a.f && (a.a = a.f);return b;\n  }function Wk(a, b) {\n    a.stop();a.b = Hc(Xk(a, b)).then(function () {\n      return Ee();\n    }).then(function () {\n      return a.h();\n    }).then(function () {\n      Wk(a, !0);\n    }).s(function (b) {\n      a.i(b) && Wk(a, !1);\n    });\n  }\n  Vk.prototype.stop = function () {\n    this.b && (this.b.cancel(), this.b = null);\n  };function Yk(a) {\n    this.f = a;this.b = this.a = null;this.c = 0;\n  }Yk.prototype.C = function () {\n    return { apiKey: this.f.b, refreshToken: this.a, accessToken: this.b, expirationTime: this.c };\n  };function Zk(a, b) {\n    var c = b[M],\n        d = b.refreshToken;b = $k(b.expiresIn);a.b = c;a.c = b;a.a = d;\n  }function al(a, b) {\n    a.b = b.b;a.a = b.a;a.c = b.c;\n  }function $k(a) {\n    return oa() + 1E3 * parseInt(a, 10);\n  }\n  function bl(a, b) {\n    return Vh(a.f, b).then(function (b) {\n      a.b = b.access_token;a.c = $k(b.expires_in);a.a = b.refresh_token;return { accessToken: a.b, expirationTime: a.c, refreshToken: a.a };\n    }).s(function (b) {\n      \"auth/user-token-expired\" == b.code && (a.a = null);throw b;\n    });\n  }Yk.prototype.getToken = function (a) {\n    a = !!a;return this.b && !this.a ? C(new L(\"user-token-expired\")) : a || !this.b || oa() > this.c - 3E4 ? this.a ? bl(this, { grant_type: \"refresh_token\", refresh_token: this.a }) : B(null) : B({ accessToken: this.b, expirationTime: this.c, refreshToken: this.a });\n  };function cl(a, b) {\n    this.a = a || null;this.b = b || null;K(this, { lastSignInTime: Fe(b || null), creationTime: Fe(a || null) });\n  }function dl(a) {\n    return new cl(a.a, a.b);\n  }cl.prototype.C = function () {\n    return { lastLoginAt: this.b, createdAt: this.a };\n  };function el(a, b, c, d, e, f) {\n    K(this, { uid: a, displayName: d || null, photoURL: e || null, email: c || null, phoneNumber: f || null, providerId: b });\n  }function fl(a, b) {\n    D.call(this, a);for (var c in b) {\n      this[c] = b[c];\n    }\n  }t(fl, D);\n  function Q(a, b, c) {\n    this.G = [];this.m = a.apiKey;this.o = a.appName;this.u = a.authDomain || null;a = __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION ? re(__WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION) : null;this.b = new Jh(this.m, yf(zf), a);this.h = new Yk(this.b);gl(this, b[M]);Zk(this.h, b);J(this, \"refreshToken\", this.h.a);hl(this, c || {});F.call(this);this.I = !1;this.u && ue() && (this.a = Kk(this.u, this.m, this.o));this.N = [];this.i = null;this.w = il(this);this.V = r(this.Ha, this);var d = this;this.ka = null;this.ta = function (a) {\n      d.pa(a.g);\n    };this.X = null;this.O = [];this.sa = function (a) {\n      jl(d, a.c);\n    };this.W = null;\n  }t(Q, F);Q.prototype.pa = function (a) {\n    this.ka = a;Ph(this.b, a);\n  };Q.prototype.ea = function () {\n    return this.ka;\n  };function kl(a, b) {\n    a.X && E(a.X, \"languageCodeChanged\", a.ta);(a.X = b) && rc(b, \"languageCodeChanged\", a.ta);\n  }function jl(a, b) {\n    a.O = b;Qh(a.b, __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION ? re(__WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION, a.O) : null);\n  }Q.prototype.ya = function () {\n    return Ja(this.O);\n  };function ll(a, b) {\n    a.W && E(a.W, \"frameworkChanged\", a.sa);(a.W = b) && rc(b, \"frameworkChanged\", a.sa);\n  }Q.prototype.Ha = function () {\n    this.w.b && (this.w.stop(), this.w.start());\n  };\n  function ml(a) {\n    try {\n      return __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.app(a.o).auth();\n    } catch (b) {\n      throw new L(\"internal-error\", \"No firebase.auth.Auth instance is available for the Firebase App '\" + a.o + \"'!\");\n    }\n  }function il(a) {\n    return new Vk(function () {\n      return a.F(!0);\n    }, function (a) {\n      return a && \"auth/network-request-failed\" == a.code ? !0 : !1;\n    }, function () {\n      var b = a.h.c - oa() - 3E5;return 0 < b ? b : 0;\n    });\n  }function nl(a) {\n    a.D || a.w.b || (a.w.start(), E(a, \"tokenChanged\", a.V), rc(a, \"tokenChanged\", a.V));\n  }function ol(a) {\n    E(a, \"tokenChanged\", a.V);a.w.stop();\n  }\n  function gl(a, b) {\n    a.ra = b;J(a, \"_lat\", b);\n  }function pl(a, b) {\n    w(a.N, function (a) {\n      return a == b;\n    });\n  }function ql(a) {\n    for (var b = [], c = 0; c < a.N.length; c++) {\n      b.push(a.N[c](a));\n    }return wb(b).then(function () {\n      return a;\n    });\n  }function rl(a) {\n    a.a && !a.I && (a.I = !0, a.a.subscribe(a));\n  }\n  function hl(a, b) {\n    K(a, { uid: b.uid, displayName: b.displayName || null, photoURL: b.photoURL || null, email: b.email || null, emailVerified: b.emailVerified || !1, phoneNumber: b.phoneNumber || null, isAnonymous: b.isAnonymous || !1, metadata: new cl(b.createdAt, b.lastLoginAt), providerData: [] });\n  }J(Q.prototype, \"providerId\", \"firebase\");function sl() {}function tl(a) {\n    return B().then(function () {\n      if (a.D) throw new L(\"app-deleted\");\n    });\n  }function ul(a) {\n    return Ca(a.providerData, function (a) {\n      return a.providerId;\n    });\n  }\n  function vl(a, b) {\n    b && (wl(a, b.providerId), a.providerData.push(b));\n  }function wl(a, b) {\n    w(a.providerData, function (a) {\n      return a.providerId == b;\n    });\n  }function xl(a, b, c) {\n    (\"uid\" != b || c) && a.hasOwnProperty(b) && J(a, b, c);\n  }\n  function yl(a, b) {\n    a != b && (K(a, { uid: b.uid, displayName: b.displayName, photoURL: b.photoURL, email: b.email, emailVerified: b.emailVerified, phoneNumber: b.phoneNumber, isAnonymous: b.isAnonymous, providerData: [] }), b.metadata ? J(a, \"metadata\", dl(b.metadata)) : J(a, \"metadata\", new cl()), v(b.providerData, function (b) {\n      vl(a, b);\n    }), al(a.h, b.h), J(a, \"refreshToken\", a.h.a));\n  }g = Q.prototype;g.reload = function () {\n    var a = this;return R(this, tl(this).then(function () {\n      return zl(a).then(function () {\n        return ql(a);\n      }).then(sl);\n    }));\n  };\n  function zl(a) {\n    return a.F().then(function (b) {\n      var c = a.isAnonymous;return Al(a, b).then(function () {\n        c || xl(a, \"isAnonymous\", !1);return b;\n      });\n    });\n  }g.dc = function (a) {\n    return this.F(a).then(function (a) {\n      return new Uk(a);\n    });\n  };g.F = function (a) {\n    var b = this;return R(this, tl(this).then(function () {\n      return b.h.getToken(a);\n    }).then(function (a) {\n      if (!a) throw new L(\"internal-error\");a.accessToken != b.ra && (gl(b, a.accessToken), b.dispatchEvent(new fl(\"tokenChanged\")));xl(b, \"refreshToken\", a.refreshToken);return a.accessToken;\n    }));\n  };\n  function Bl(a, b) {\n    b[M] && a.ra != b[M] && (Zk(a.h, b), a.dispatchEvent(new fl(\"tokenChanged\")), gl(a, b[M]), xl(a, \"refreshToken\", a.h.a));\n  }function Al(a, b) {\n    return P(a.b, Di, { idToken: b }).then(r(a.xc, a));\n  }\n  g.xc = function (a) {\n    a = a.users;if (!a || !a.length) throw new L(\"internal-error\");a = a[0];hl(this, { uid: a.localId, displayName: a.displayName, photoURL: a.photoUrl, email: a.email, emailVerified: !!a.emailVerified, phoneNumber: a.phoneNumber, lastLoginAt: a.lastLoginAt, createdAt: a.createdAt });for (var b = Cl(a), c = 0; c < b.length; c++) {\n      vl(this, b[c]);\n    }xl(this, \"isAnonymous\", !(this.email && a.passwordHash) && !(this.providerData && this.providerData.length));\n  };\n  function Cl(a) {\n    return (a = a.providerUserInfo) && a.length ? Ca(a, function (a) {\n      return new el(a.rawId, a.providerId, a.email, a.displayName, a.photoUrl, a.phoneNumber);\n    }) : [];\n  }g.gb = function (a) {\n    var b = this,\n        c = null;return R(this, a.f(this.b, this.uid).then(function (a) {\n      Bl(b, a);c = Dl(b, a, \"reauthenticate\");b.i = null;return b.reload();\n    }).then(function () {\n      return c;\n    }), !0);\n  };\n  g.yc = function (a) {\n    Ke(\"firebase.User.prototype.reauthenticateWithCredential is deprecated. Please use firebase.User.prototype.reauthenticateAndRetrieveDataWithCredential instead.\");return this.gb(a).then(function () {});\n  };function El(a, b) {\n    return zl(a).then(function () {\n      if (Ga(ul(a), b)) return ql(a).then(function () {\n        throw new L(\"provider-already-linked\");\n      });\n    });\n  }\n  g.eb = function (a) {\n    var b = this,\n        c = null;return R(this, El(this, a.providerId).then(function () {\n      return b.F();\n    }).then(function (c) {\n      return a.b(b.b, c);\n    }).then(function (a) {\n      c = Dl(b, a, \"link\");return Fl(b, a);\n    }).then(function () {\n      return c;\n    }));\n  };g.pc = function (a) {\n    Ke(\"firebase.User.prototype.linkWithCredential is deprecated. Please use firebase.User.prototype.linkAndRetrieveDataWithCredential instead.\");return this.eb(a).then(function (a) {\n      return a.user;\n    });\n  };\n  g.qc = function (a, b) {\n    var c = this;return R(this, El(this, \"phone\").then(function () {\n      return Tk(ml(c), a, b, r(c.eb, c));\n    }));\n  };g.zc = function (a, b) {\n    var c = this;return R(this, B().then(function () {\n      return Tk(ml(c), a, b, r(c.gb, c));\n    }), !0);\n  };function Dl(a, b, c) {\n    var d = ug(b);b = Ef(b);return Ne({ user: a, credential: d, additionalUserInfo: b, operationType: c });\n  }function Fl(a, b) {\n    Bl(a, b);return a.reload().then(function () {\n      return a;\n    });\n  }\n  g.pb = function (a) {\n    var b = this;return R(this, this.F().then(function (c) {\n      return b.b.pb(c, a);\n    }).then(function (a) {\n      Bl(b, a);return b.reload();\n    }));\n  };g.Rc = function (a) {\n    var b = this;return R(this, this.F().then(function (c) {\n      return a.b(b.b, c);\n    }).then(function (a) {\n      Bl(b, a);return b.reload();\n    }));\n  };g.qb = function (a) {\n    var b = this;return R(this, this.F().then(function (c) {\n      return b.b.qb(c, a);\n    }).then(function (a) {\n      Bl(b, a);return b.reload();\n    }));\n  };\n  g.rb = function (a) {\n    if (void 0 === a.displayName && void 0 === a.photoURL) return tl(this);var b = this;return R(this, this.F().then(function (c) {\n      return b.b.rb(c, { displayName: a.displayName, photoUrl: a.photoURL });\n    }).then(function (a) {\n      Bl(b, a);xl(b, \"displayName\", a.displayName || null);xl(b, \"photoURL\", a.photoUrl || null);v(b.providerData, function (a) {\n        \"password\" === a.providerId && (J(a, \"displayName\", b.displayName), J(a, \"photoURL\", b.photoURL));\n      });return ql(b);\n    }).then(sl));\n  };\n  g.Pc = function (a) {\n    var b = this;return R(this, zl(this).then(function (c) {\n      return Ga(ul(b), a) ? oi(b.b, c, [a]).then(function (a) {\n        var c = {};v(a.providerUserInfo || [], function (a) {\n          c[a.providerId] = !0;\n        });v(ul(b), function (a) {\n          c[a] || wl(b, a);\n        });c[rg.PROVIDER_ID] || J(b, \"phoneNumber\", null);return ql(b);\n      }) : ql(b).then(function () {\n        throw new L(\"no-such-provider\");\n      });\n    }));\n  };\n  g.delete = function () {\n    var a = this;return R(this, this.F().then(function (b) {\n      return P(a.b, Ci, { idToken: b });\n    }).then(function () {\n      a.dispatchEvent(new fl(\"userDeleted\"));\n    })).then(function () {\n      for (var b = 0; b < a.G.length; b++) {\n        a.G[b].cancel(\"app-deleted\");\n      }kl(a, null);ll(a, null);a.G = [];a.D = !0;ol(a);J(a, \"refreshToken\", null);a.a && a.a.unsubscribe(a);\n    });\n  };\n  g.vb = function (a, b) {\n    return \"linkViaPopup\" == a && (this.g || null) == b && this.f || \"reauthViaPopup\" == a && (this.g || null) == b && this.f || \"linkViaRedirect\" == a && (this.aa || null) == b || \"reauthViaRedirect\" == a && (this.aa || null) == b ? !0 : !1;\n  };g.ha = function (a, b, c, d) {\n    \"linkViaPopup\" != a && \"reauthViaPopup\" != a || d != (this.g || null) || (c && this.v ? this.v(c) : b && !c && this.f && this.f(b), this.c && (this.c.cancel(), this.c = null), delete this.f, delete this.v);\n  };\n  g.xa = function (a, b) {\n    return \"linkViaPopup\" == a && b == (this.g || null) ? r(this.Ab, this) : \"reauthViaPopup\" == a && b == (this.g || null) ? r(this.Bb, this) : \"linkViaRedirect\" == a && (this.aa || null) == b ? r(this.Ab, this) : \"reauthViaRedirect\" == a && (this.aa || null) == b ? r(this.Bb, this) : null;\n  };g.rc = function (a) {\n    var b = this;return Gl(this, \"linkViaPopup\", a, function () {\n      return El(b, a.providerId).then(function () {\n        return ql(b);\n      });\n    }, !1);\n  };g.Ac = function (a) {\n    return Gl(this, \"reauthViaPopup\", a, function () {\n      return B();\n    }, !0);\n  };\n  function Gl(a, b, c, d, e) {\n    if (!ue()) return C(new L(\"operation-not-supported-in-this-environment\"));if (a.i && !e) return C(a.i);var f = Df(c.providerId),\n        h = te(a.uid + \":::\"),\n        m = null;(!we() || le()) && a.u && c.isOAuthProvider && (m = Yi(a.u, a.m, a.o, b, c, null, h, __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION || null));var p = ce(m, f && f.Ba, f && f.Aa);d = d().then(function () {\n      Hl(a);if (!e) return a.F().then(function () {});\n    }).then(function () {\n      return Ik(a.a, p, b, c, h, !!m);\n    }).then(function () {\n      return new A(function (c, d) {\n        a.ha(b, null, new L(\"cancelled-popup-request\"), a.g || null);\n        a.f = c;a.v = d;a.g = h;a.c = a.a.Ea(a, b, p, h);\n      });\n    }).then(function (a) {\n      p && be(p);return a ? Ne(a) : null;\n    }).s(function (a) {\n      p && be(p);throw a;\n    });return R(a, d, e);\n  }g.sc = function (a) {\n    var b = this;return Il(this, \"linkViaRedirect\", a, function () {\n      return El(b, a.providerId);\n    }, !1);\n  };g.Bc = function (a) {\n    return Il(this, \"reauthViaRedirect\", a, function () {\n      return B();\n    }, !0);\n  };\n  function Il(a, b, c, d, e) {\n    if (!ue()) return C(new L(\"operation-not-supported-in-this-environment\"));if (a.i && !e) return C(a.i);var f = null,\n        h = te(a.uid + \":::\");d = d().then(function () {\n      Hl(a);if (!e) return a.F().then(function () {});\n    }).then(function () {\n      a.aa = h;return ql(a);\n    }).then(function (b) {\n      a.ba && (b = a.ba, b = b.b.set(Jl, a.C(), b.a));return b;\n    }).then(function () {\n      return a.a.Ca(b, c, h);\n    }).s(function (b) {\n      f = b;if (a.ba) return Kl(a.ba);throw f;\n    }).then(function () {\n      if (f) throw f;\n    });return R(a, d, e);\n  }\n  function Hl(a) {\n    if (!a.a || !a.I) {\n      if (a.a && !a.I) throw new L(\"internal-error\");throw new L(\"auth-domain-config-required\");\n    }\n  }g.Ab = function (a, b, c) {\n    var d = this;this.c && (this.c.cancel(), this.c = null);var e = null,\n        f = this.F().then(function (e) {\n      return Tf(d.b, { requestUri: a, postBody: c, sessionId: b, idToken: e });\n    }).then(function (a) {\n      e = Dl(d, a, \"link\");return Fl(d, a);\n    }).then(function () {\n      return e;\n    });return R(this, f);\n  };\n  g.Bb = function (a, b, c) {\n    var d = this;this.c && (this.c.cancel(), this.c = null);var e = null,\n        f = B().then(function () {\n      return Pf(Uf(d.b, { requestUri: a, sessionId: b, postBody: c }), d.uid);\n    }).then(function (a) {\n      e = Dl(d, a, \"reauthenticate\");Bl(d, a);d.i = null;return d.reload();\n    }).then(function () {\n      return e;\n    });return R(this, f, !0);\n  };g.jb = function (a) {\n    var b = this,\n        c = null;return R(this, this.F().then(function (b) {\n      c = b;return \"undefined\" === typeof a || Za(a) ? {} : nf(new cf(a));\n    }).then(function (a) {\n      return b.b.jb(c, a);\n    }).then(function (a) {\n      if (b.email != a) return b.reload();\n    }).then(function () {}));\n  };\n  function R(a, b, c) {\n    var d = Ll(a, b, c);a.G.push(d);d.ia(function () {\n      Ha(a.G, d);\n    });return d;\n  }function Ll(a, b, c) {\n    return a.i && !c ? 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re(__WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION) : null, this.b = new Jh(S(this).options && S(this).options.apiKey, yf(zf), a);else throw new L(\"invalid-api-key\");this.N = [];this.o = [];this.I = [];this.Tb = __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.INTERNAL.createSubscribe(r(this.mc, this));this.O = void 0;this.Ub = __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.INTERNAL.createSubscribe(r(this.nc, this));cm(this, null);this.h = new Sl(S(this).options.apiKey + \":\" + S(this).name);this.w = new Pl(S(this).options.apiKey + \":\" + S(this).name);this.V = T(this, dm(this));this.i = T(this, em(this));this.X = !1;this.ka = r(this.Mc, this);this.Ha = r(this.Z, this);this.ra = r(this.bc, this);this.sa = r(this.jc, this);this.ta = r(this.kc, this);fm(this);this.INTERNAL = {};this.INTERNAL[\"delete\"] = r(this.delete, this);this.INTERNAL.logFramework = r(this.tc, this);this.u = 0;F.call(this);gm(this);this.G = [];\n  }t(bm, F);function hm(a) {\n    D.call(this, \"languageCodeChanged\");this.g = a;\n  }t(hm, D);\n  function im(a) {\n    D.call(this, \"frameworkChanged\");this.c = a;\n  }t(im, D);g = bm.prototype;g.mb = function (a) {\n    a = this.h.mb(a);return T(this, a);\n  };g.pa = function (a) {\n    this.W === a || this.m || (this.W = a, Ph(this.b, this.W), this.dispatchEvent(new hm(this.ea())));\n  };g.ea = function () {\n    return this.W;\n  };g.Sc = function () {\n    var a = k.navigator;this.pa(a ? a.languages && a.languages[0] || a.language || a.userLanguage || null : null);\n  };g.tc = function (a) {\n    this.G.push(a);Qh(this.b, __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION ? re(__WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION, this.G) : null);this.dispatchEvent(new im(this.G));\n  };\n  g.ya = function () {\n    return Ja(this.G);\n  };function gm(a) {\n    Object.defineProperty(a, \"lc\", { get: function get() {\n        return this.ea();\n      }, set: function set(a) {\n        this.pa(a);\n      }, enumerable: !1 });a.W = null;\n  }g.toJSON = function () {\n    return { apiKey: S(this).options.apiKey, authDomain: S(this).options.authDomain, appName: S(this).name, currentUser: U(this) && U(this).C() };\n  };function jm(a) {\n    return a.Sb || C(new L(\"auth-domain-config-required\"));\n  }\n  function fm(a) {\n    var b = S(a).options.authDomain,\n        c = S(a).options.apiKey;b && ue() && (a.Sb = a.V.then(function () {\n      if (!a.m) {\n        a.a = Kk(b, c, S(a).name);a.a.subscribe(a);U(a) && rl(U(a));if (a.D) {\n          rl(a.D);var d = a.D;d.pa(a.ea());kl(d, a);d = a.D;jl(d, a.G);ll(d, a);a.D = null;\n        }return a.a;\n      }\n    }));\n  }g.vb = function (a, b) {\n    switch (a) {case \"unknown\":case \"signInViaRedirect\":\n        return !0;case \"signInViaPopup\":\n        return this.g == b && !!this.f;default:\n        return !1;}\n  };\n  g.ha = function (a, b, c, d) {\n    \"signInViaPopup\" == a && this.g == d && (c && this.v ? this.v(c) : b && !c && this.f && this.f(b), this.c && (this.c.cancel(), this.c = null), delete this.f, delete this.v);\n  };g.xa = function (a, b) {\n    return \"signInViaRedirect\" == a || \"signInViaPopup\" == a && this.g == b && this.f ? r(this.ac, this) : null;\n  };\n  g.ac = function (a, b, c) {\n    var d = this;a = { requestUri: a, postBody: c, sessionId: b };this.c && (this.c.cancel(), this.c = null);var e = null,\n        f = null,\n        h = Rf(d.b, a).then(function (a) {\n      e = ug(a);f = Ef(a);return a;\n    });a = d.V.then(function () {\n      return h;\n    }).then(function (a) {\n      return km(d, a);\n    }).then(function () {\n      return Ne({ user: U(d), credential: e, additionalUserInfo: f, operationType: \"signIn\" });\n    });return T(this, a);\n  };\n  g.Kc = function (a) {\n    if (!ue()) return C(new L(\"operation-not-supported-in-this-environment\"));var b = this,\n        c = Df(a.providerId),\n        d = te(),\n        e = null;(!we() || le()) && S(this).options.authDomain && a.isOAuthProvider && (e = Yi(S(this).options.authDomain, S(this).options.apiKey, S(this).name, \"signInViaPopup\", a, null, d, __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION || null));var f = ce(e, c && c.Ba, c && c.Aa);c = jm(this).then(function (b) {\n      return Ik(b, f, \"signInViaPopup\", a, d, !!e);\n    }).then(function () {\n      return new A(function (a, c) {\n        b.ha(\"signInViaPopup\", null, new L(\"cancelled-popup-request\"), b.g);b.f = a;b.v = c;b.g = d;b.c = b.a.Ea(b, \"signInViaPopup\", f, d);\n      });\n    }).then(function (a) {\n      f && be(f);return a ? Ne(a) : null;\n    }).s(function (a) {\n      f && be(f);throw a;\n    });return T(this, c);\n  };g.Lc = function (a) {\n    if (!ue()) return C(new L(\"operation-not-supported-in-this-environment\"));var b = this,\n        c = jm(this).then(function () {\n      return Yl(b.h);\n    }).then(function () {\n      return b.a.Ca(\"signInViaRedirect\", a);\n    });return T(this, c);\n  };\n  g.fa = function () {\n    if (!ue()) return C(new L(\"operation-not-supported-in-this-environment\"));var a = this,\n        b = jm(this).then(function () {\n      return a.a.fa();\n    }).then(function (a) {\n      return a ? Ne(a) : null;\n    });return T(this, b);\n  };\n  g.Qc = function (a) {\n    if (!a) return C(new L(\"null-user\"));var b = this,\n        c = {};c.apiKey = S(this).options.apiKey;c.authDomain = S(this).options.authDomain;c.appName = S(this).name;var d = Ol(a, c, b.w, b.ya());return T(this, this.i.then(function () {\n      if (S(b).options.apiKey != a.m) return d.reload();\n    }).then(function () {\n      if (U(b) && a.uid == U(b).uid) return yl(U(b), a), b.Z(a);cm(b, d);rl(d);return b.Z(d);\n    }).then(function () {\n      lm(b);\n    }));\n  };\n  function km(a, b) {\n    var c = {};c.apiKey = S(a).options.apiKey;c.authDomain = S(a).options.authDomain;c.appName = S(a).name;return a.V.then(function () {\n      return Nl(c, b, a.w, a.ya());\n    }).then(function (b) {\n      if (U(a) && b.uid == U(a).uid) return yl(U(a), b), a.Z(b);cm(a, b);rl(b);return a.Z(b);\n    }).then(function () {\n      lm(a);\n    });\n  }\n  function cm(a, b) {\n    U(a) && (pl(U(a), a.Ha), E(U(a), \"tokenChanged\", a.ra), E(U(a), \"userDeleted\", a.sa), E(U(a), \"userInvalidated\", a.ta), ol(U(a)));b && (b.N.push(a.Ha), rc(b, \"tokenChanged\", a.ra), rc(b, \"userDeleted\", a.sa), rc(b, \"userInvalidated\", a.ta), 0 < a.u && nl(b));J(a, \"currentUser\", b);b && (b.pa(a.ea()), kl(b, a), jl(b, a.G), ll(b, a));\n  }g.nb = function () {\n    var a = this,\n        b = this.i.then(function () {\n      if (!U(a)) return B();cm(a, null);return $l(a.h).then(function () {\n        lm(a);\n      });\n    });return T(this, b);\n  };\n  function mm(a) {\n    var b = Ql(a.w, S(a).options.authDomain).then(function (b) {\n      if (a.D = b) b.ba = a.w;return Kl(a.w);\n    });return T(a, b);\n  }function dm(a) {\n    var b = S(a).options.authDomain,\n        c = mm(a).then(function () {\n      return am(a.h, b);\n    }).then(function (b) {\n      return b ? (b.ba = a.w, a.D && (a.D.aa || null) == (b.aa || null) ? b : b.reload().then(function () {\n        return Zl(a.h, b).then(function () {\n          return b;\n        });\n      }).s(function (c) {\n        return \"auth/network-request-failed\" == c.code ? b : $l(a.h);\n      })) : null;\n    }).then(function (b) {\n      cm(a, b || null);\n    });return T(a, c);\n  }\n  function em(a) {\n    return a.V.then(function () {\n      return a.fa();\n    }).s(function () {}).then(function () {\n      if (!a.m) return a.ka();\n    }).s(function () {}).then(function () {\n      if (!a.m) {\n        a.X = !0;var b = a.h;b.b.addListener(Ul(\"local\"), b.a, a.ka);\n      }\n    });\n  }\n  g.Mc = function () {\n    var a = this;return am(this.h, S(this).options.authDomain).then(function (b) {\n      if (!a.m) {\n        var c;if (c = U(a) && b) {\n          c = U(a).uid;var d = b.uid;c = void 0 === c || null === c || \"\" === c || void 0 === d || null === d || \"\" === d ? !1 : c == d;\n        }if (c) return yl(U(a), b), U(a).F();if (U(a) || b) cm(a, b), b && (rl(b), b.ba = a.w), a.a && a.a.subscribe(a), lm(a);\n      }\n    });\n  };g.Z = function (a) {\n    return Zl(this.h, a);\n  };g.bc = function () {\n    lm(this);this.Z(U(this));\n  };g.jc = function () {\n    this.nb();\n  };g.kc = function () {\n    this.nb();\n  };\n  function nm(a, b) {\n    var c = null,\n        d = null;return T(a, b.then(function (b) {\n      c = ug(b);d = Ef(b);return km(a, b);\n    }).then(function () {\n      return Ne({ user: U(a), credential: c, additionalUserInfo: d, operationType: \"signIn\" });\n    }));\n  }g.mc = function (a) {\n    var b = this;this.addAuthTokenListener(function () {\n      a.next(U(b));\n    });\n  };g.nc = function (a) {\n    var b = this;om(this, function () {\n      a.next(U(b));\n    });\n  };g.vc = function (a, b, c) {\n    var d = this;this.X && __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.Promise.resolve().then(function () {\n      n(a) ? a(U(d)) : n(a.next) && a.next(U(d));\n    });return this.Tb(a, b, c);\n  };\n  g.uc = function (a, b, c) {\n    var d = this;this.X && __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.Promise.resolve().then(function () {\n      d.O = d.getUid();n(a) ? a(U(d)) : n(a.next) && a.next(U(d));\n    });return this.Ub(a, b, c);\n  };g.cc = function (a) {\n    var b = this,\n        c = this.i.then(function () {\n      return U(b) ? U(b).F(a).then(function (a) {\n        return { accessToken: a };\n      }) : null;\n    });return T(this, c);\n  };g.Nb = function (a) {\n    var b = this;return this.i.then(function () {\n      return nm(b, P(b.b, Fi, { token: a }));\n    }).then(function (a) {\n      var c = a.user;xl(c, \"isAnonymous\", !1);b.Z(c);return a;\n    });\n  };\n  g.Ec = function (a) {\n    Ke(\"firebase.auth.Auth.prototype.signInAndRetrieveDataWithCustomToken is deprecated. Please use firebase.auth.Auth.prototype.signInWithCustomToken instead.\");return this.Nb(a);\n  };g.Fc = function (a, b) {\n    Ke(\"firebase.auth.Auth.prototype.signInAndRetrieveDataWithEmailAndPassword is deprecated. Please use firebase.auth.Auth.prototype.signInWithEmailAndPassword instead.\");return this.Ob(a, b);\n  };g.Ob = function (a, b) {\n    var c = this;return this.i.then(function () {\n      return nm(c, P(c.b, ig, { email: a, password: b }));\n    });\n  };\n  g.xb = function (a, b) {\n    var c = this;return this.i.then(function () {\n      return nm(c, P(c.b, Bi, { email: a, password: b }));\n    });\n  };g.Wb = function (a, b) {\n    Ke(\"firebase.auth.Auth.prototype.createUserAndRetrieveDataWithEmailAndPassword is deprecated. Please use firebase.auth.Auth.prototype.createUserWithEmailAndPassword instead.\");return this.xb(a, b);\n  };g.Hc = function (a) {\n    Ke(\"firebase.auth.Auth.prototype.signInWithCredential is deprecated. Please use firebase.auth.Auth.prototype.signInAndRetrieveDataWithCredential instead.\");return this.Pa(a).then(function (a) {\n      return a.user;\n    });\n  };\n  g.Pa = function (a) {\n    var b = this;return this.i.then(function () {\n      return nm(b, a.la(b.b));\n    });\n  };g.Qa = function () {\n    var a = this;return this.i.then(function () {\n      var b = U(a);if (b && b.isAnonymous) {\n        var c = Ne({ providerId: null, isNewUser: !1 });return Ne({ user: b, credential: null, additionalUserInfo: c, operationType: \"signIn\" });\n      }return nm(a, a.b.Qa()).then(function (b) {\n        var c = b.user;xl(c, \"isAnonymous\", !0);a.Z(c);return b;\n      });\n    });\n  };\n  g.Gc = function () {\n    Ke(\"firebase.auth.Auth.prototype.signInAnonymouslyAndRetrieveData is deprecated. Please use firebase.auth.Auth.prototype.signInAnonymously instead.\");return this.Qa();\n  };function S(a) {\n    return a.app;\n  }function U(a) {\n    return a.currentUser;\n  }g.getUid = function () {\n    return U(this) && U(this).uid || null;\n  };function pm(a) {\n    return U(a) && U(a)._lat || null;\n  }\n  function lm(a) {\n    if (a.X) {\n      for (var b = 0; b < a.o.length; b++) {\n        if (a.o[b]) a.o[b](pm(a));\n      }if (a.O !== a.getUid() && a.I.length) for (a.O = a.getUid(), b = 0; b < a.I.length; b++) {\n        if (a.I[b]) a.I[b](pm(a));\n      }\n    }\n  }g.Vb = function (a) {\n    this.addAuthTokenListener(a);this.u++;0 < this.u && U(this) && nl(U(this));\n  };g.Cc = function (a) {\n    var b = this;v(this.o, function (c) {\n      c == a && b.u--;\n    });0 > this.u && (this.u = 0);0 == this.u && U(this) && ol(U(this));this.removeAuthTokenListener(a);\n  };\n  g.addAuthTokenListener = function (a) {\n    var b = this;this.o.push(a);T(this, this.i.then(function () {\n      b.m || Ga(b.o, a) && a(pm(b));\n    }));\n  };g.removeAuthTokenListener = function (a) {\n    w(this.o, function (b) {\n      return b == a;\n    });\n  };function om(a, b) {\n    a.I.push(b);T(a, a.i.then(function () {\n      !a.m && Ga(a.I, b) && a.O !== a.getUid() && (a.O = a.getUid(), b(pm(a)));\n    }));\n  }\n  g.delete = function () {\n    this.m = !0;for (var a = 0; a < this.N.length; a++) {\n      this.N[a].cancel(\"app-deleted\");\n    }this.N = [];this.h && (a = this.h, a.b.removeListener(Ul(\"local\"), a.a, this.ka));this.a && (this.a.unsubscribe(this), this.a.Ya());return __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.Promise.resolve();\n  };function T(a, b) {\n    a.N.push(b);b.ia(function () {\n      Ha(a.N, b);\n    });return b;\n  }\n  g.Zb = function (a) {\n    Ke(\"firebase.auth.Auth.prototype.fetchProvidersForEmail is deprecated. Please use firebase.auth.Auth.prototype.fetchSignInMethodsForEmail instead.\");return T(this, $h(this.b, a));\n  };g.$b = function (a) {\n    return T(this, bi(this.b, a));\n  };g.oc = function (a) {\n    return !!mg(a);\n  };g.lb = function (a, b) {\n    var c = this;return T(this, B().then(function () {\n      var a = new cf(b);if (!a.c) throw new L(\"argument-error\", lf + \" must be true when sending sign in link to email\");return nf(a);\n    }).then(function (b) {\n      return c.b.lb(a, b);\n    }).then(function () {}));\n  };\n  g.Tc = function (a) {\n    return this.Ja(a).then(function (a) {\n      return a.data.email;\n    });\n  };g.Za = function (a, b) {\n    return T(this, this.b.Za(a, b).then(function () {}));\n  };g.Ja = function (a) {\n    return T(this, this.b.Ja(a).then(function (a) {\n      return new Re(a);\n    }));\n  };g.Wa = function (a) {\n    return T(this, this.b.Wa(a).then(function () {}));\n  };g.kb = function (a, b) {\n    var c = this;return T(this, B().then(function () {\n      return \"undefined\" === typeof b || Za(b) ? {} : nf(new cf(b));\n    }).then(function (b) {\n      return c.b.kb(a, b);\n    }).then(function () {}));\n  };\n  g.Jc = function (a, b) {\n    return T(this, Tk(this, a, b, r(this.Pa, this)));\n  };g.Ic = function (a, b) {\n    var c = this;return T(this, B().then(function () {\n      var d = lg(a, b || Vd());return c.Pa(d);\n    }));\n  };function qm() {}qm.prototype.render = function () {};qm.prototype.reset = function () {};qm.prototype.getResponse = function () {};qm.prototype.execute = function () {};function rm() {\n    this.a = {};this.b = 1E12;\n  }var sm = null;rm.prototype.render = function (a, b) {\n    this.a[this.b.toString()] = new tm(a, b);return this.b++;\n  };rm.prototype.reset = function (a) {\n    var b = um(this, a);a = vm(a);b && a && (b.delete(), delete this.a[a]);\n  };rm.prototype.getResponse = function (a) {\n    return (a = um(this, a)) ? a.getResponse() : null;\n  };rm.prototype.execute = function (a) {\n    (a = um(this, a)) && a.execute();\n  };function um(a, b) {\n    return (b = vm(b)) ? a.a[b] || null : null;\n  }function vm(a) {\n    return (a = \"undefined\" === typeof a ? 1E12 : a) ? a.toString() : null;\n  }\n  function tm(a, b) {\n    this.g = !1;this.c = b;this.a = this.b = null;this.h = \"invisible\" !== this.c.size;this.f = Id(a);var c = this;this.i = function () {\n      c.execute();\n    };this.h ? this.execute() : rc(this.f, \"click\", this.i);\n  }tm.prototype.getResponse = function () {\n    wm(this);return this.b;\n  };\n  tm.prototype.execute = function () {\n    wm(this);var a = this;this.a || (this.a = setTimeout(function () {\n      a.b = pe();var b = a.c.callback,\n          c = a.c[\"expired-callback\"];if (b) try {\n        b(a.b);\n      } catch (d) {}a.a = setTimeout(function () {\n        a.a = null;a.b = null;if (c) try {\n          c();\n        } catch (d) {}a.h && a.execute();\n      }, 6E4);\n    }, 500));\n  };tm.prototype.delete = function () {\n    wm(this);this.g = !0;clearTimeout(this.a);this.a = null;E(this.f, \"click\", this.i);\n  };function wm(a) {\n    if (a.g) throw Error(\"reCAPTCHA mock was already deleted!\");\n  };function xm() {}xm.prototype.g = function () {\n    sm || (sm = new rm());return B(sm);\n  };xm.prototype.c = function () {};var ym = null;function zm() {\n    this.b = k.grecaptcha ? Infinity : 0;this.f = null;this.a = \"__rcb\" + Math.floor(1E6 * Math.random()).toString();\n  }var Am = qd(\"https://www.google.com/recaptcha/api.js?onload=%{onload}&render=explicit&hl=%{hl}\"),\n      Bm = new Ce(3E4, 6E4);\n  zm.prototype.g = function (a) {\n    var b = this;return new A(function (c, d) {\n      var e = setTimeout(function () {\n        d(new L(\"network-request-failed\"));\n      }, Bm.get());if (!k.grecaptcha || a !== b.f && !b.b) {\n        k[b.a] = function () {\n          if (k.grecaptcha) {\n            b.f = a;var f = k.grecaptcha.render;k.grecaptcha.render = function (a, c) {\n              a = f(a, c);b.b++;return a;\n            };clearTimeout(e);c(k.grecaptcha);\n          } else clearTimeout(e), d(new L(\"internal-error\"));delete k[b.a];\n        };var f = ud(Am, { onload: b.a, hl: a || \"\" });B(Bh(f)).s(function () {\n          clearTimeout(e);d(new L(\"internal-error\", \"Unable to load external reCAPTCHA dependencies!\"));\n        });\n      } else clearTimeout(e), c(k.grecaptcha);\n    });\n  };zm.prototype.c = function () {\n    this.b--;\n  };var Cm = null;function Dm(a, b, c, d, e, f, h) {\n    J(this, \"type\", \"recaptcha\");this.c = this.f = null;this.D = !1;this.m = b;this.g = null;h ? (ym || (ym = new xm()), h = ym) : (Cm || (Cm = new zm()), h = Cm);this.o = h;this.a = c || { theme: \"light\", type: \"image\" };this.h = [];if (this.a[Em]) throw new L(\"argument-error\", \"sitekey should not be provided for reCAPTCHA as one is automatically provisioned for the current project.\");this.i = \"invisible\" === this.a[Fm];if (!k.document) throw new L(\"operation-not-supported-in-this-environment\", \"RecaptchaVerifier is only supported in a browser HTTP/HTTPS environment with DOM support.\");\n    if (!Id(b) || !this.i && Id(b).hasChildNodes()) throw new L(\"argument-error\", \"reCAPTCHA container is either not found or already contains inner elements!\");this.u = new Jh(a, f || null, e || null);this.v = d || function () {\n      return null;\n    };var m = this;this.l = [];var p = this.a[Gm];this.a[Gm] = function (a) {\n      Hm(m, a);if (\"function\" === typeof p) p(a);else if (\"string\" === typeof p) {\n        var b = I(p, k);\"function\" === typeof b && b(a);\n      }\n    };var x = this.a[Im];this.a[Im] = function () {\n      Hm(m, null);if (\"function\" === typeof x) x();else if (\"string\" === typeof x) {\n        var a = I(x, k);\"function\" === typeof a && a();\n      }\n    };\n  }var Gm = \"callback\",\n      Im = \"expired-callback\",\n      Em = \"sitekey\",\n      Fm = \"size\";function Hm(a, b) {\n    for (var c = 0; c < a.l.length; c++) {\n      try {\n        a.l[c](b);\n      } catch (d) {}\n    }\n  }function Jm(a, b) {\n    w(a.l, function (a) {\n      return a == b;\n    });\n  }function Km(a, b) {\n    a.h.push(b);b.ia(function () {\n      Ha(a.h, b);\n    });return b;\n  }g = Dm.prototype;\n  g.za = function () {\n    var a = this;return this.f ? this.f : this.f = Km(this, B().then(function () {\n      if (ve() && !me()) return he();throw new L(\"operation-not-supported-in-this-environment\", \"RecaptchaVerifier is only supported in a browser HTTP/HTTPS environment.\");\n    }).then(function () {\n      return a.o.g(a.v());\n    }).then(function (b) {\n      a.g = b;return P(a.u, Ei, {});\n    }).then(function (b) {\n      a.a[Em] = b.recaptchaSiteKey;\n    }).s(function (b) {\n      a.f = null;throw b;\n    }));\n  };\n  g.render = function () {\n    Lm(this);var a = this;return Km(this, this.za().then(function () {\n      if (null === a.c) {\n        var b = a.m;if (!a.i) {\n          var c = Id(b);b = Ld(\"DIV\");c.appendChild(b);\n        }a.c = a.g.render(b, a.a);\n      }return a.c;\n    }));\n  };g.verify = function () {\n    Lm(this);var a = this;return Km(this, this.render().then(function (b) {\n      return new A(function (c) {\n        var d = a.g.getResponse(b);if (d) c(d);else {\n          var e = function e(b) {\n            b && (Jm(a, e), c(b));\n          };a.l.push(e);a.i && a.g.execute(a.c);\n        }\n      });\n    }));\n  };g.reset = function () {\n    Lm(this);null !== this.c && this.g.reset(this.c);\n  };\n  function Lm(a) {\n    if (a.D) throw new L(\"internal-error\", \"RecaptchaVerifier instance has been destroyed.\");\n  }g.clear = function () {\n    Lm(this);this.D = !0;this.o.c();for (var a = 0; a < this.h.length; a++) {\n      this.h[a].cancel(\"RecaptchaVerifier instance has been destroyed.\");\n    }if (!this.i) {\n      a = Id(this.m);for (var b; b = a.firstChild;) {\n        a.removeChild(b);\n      }\n    }\n  };\n  function Mm(a, b, c) {\n    var d = !1;try {\n      this.b = c || __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.app();\n    } catch (h) {\n      throw new L(\"argument-error\", \"No firebase.app.App instance is currently initialized.\");\n    }if (this.b.options && this.b.options.apiKey) c = this.b.options.apiKey;else throw new L(\"invalid-api-key\");var e = this,\n        f = null;try {\n      f = this.b.auth().ya();\n    } catch (h) {}try {\n      d = this.b.auth().settings.appVerificationDisabledForTesting;\n    } catch (h) {}f = __WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION ? re(__WEBPACK_IMPORTED_MODULE_0__firebase_app___default.a.SDK_VERSION, f) : null;Dm.call(this, c, a, b, function () {\n      try {\n        var a = e.b.auth().ea();\n      } catch (m) {\n        a = null;\n      }return a;\n    }, f, yf(zf), d);\n  }t(Mm, Dm);function Nm(a, b, c, d) {\n    a: {\n      c = Array.prototype.slice.call(c);var e = 0;for (var f = !1, h = 0; h < b.length; h++) {\n        if (b[h].optional) f = !0;else {\n          if (f) throw new L(\"internal-error\", \"Argument validator encountered a required argument after an optional argument.\");e++;\n        }\n      }f = b.length;if (c.length < e || f < c.length) d = \"Expected \" + (e == f ? 1 == e ? \"1 argument\" : e + \" arguments\" : e + \"-\" + f + \" arguments\") + \" but got \" + c.length + \".\";else {\n        for (e = 0; e < c.length; e++) {\n          if (f = b[e].optional && void 0 === c[e], !b[e].M(c[e]) && !f) {\n            b = b[e];if (0 > e || e >= Om.length) throw new L(\"internal-error\", \"Argument validator received an unsupported number of arguments.\");c = Om[e];d = (d ? \"\" : c + \" argument \") + (b.name ? 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(dispatch) {\n\t\tvar user = firebase[\"a\" /* auth */].currentUser;\n\t\tvar userDataRef = firebase[\"a\" /* auth */].currentUser ? firebase[\"b\" /* database */].ref('users/' + user.uid) : null;\n\t\tdispatch({ type: constants[\"m\" /* SET_AUTH_USER */], user: user, userDataRef: userDataRef });\n\t};\n}\n\nfunction loginAction() {\n\treturn function (dispatch) {\n\t\tdispatch({ type: constants[\"c\" /* LOGIN_START */] });\n\n\t\tfirebase[\"a\" /* auth */].signInWithPopup(firebase[\"c\" /* googleAuthProvider */]).then(function () {\n\t\t\tvar user = firebase[\"a\" /* auth */].currentUser;\n\t\t\tvar userDataRef = firebase[\"b\" /* database */].ref('users/' + user.uid);\n\t\t\tdispatch({ type: constants[\"d\" /* LOGIN_SUCCESS */], user: user, userDataRef: userDataRef });\n\t\t}).catch(function () {\n\t\t\tdispatch({ type: constants[\"b\" /* LOGIN_FAILURE */] });\n\t\t});\n\t};\n}\n\nfunction logoutAction() {\n\treturn function (dispatch) {\n\t\tfirebase[\"a\" /* auth */].signOut().then(function () {\n\t\t\tdispatch({ type: constants[\"e\" /* LOGOUT */] });\n\t\t});\n\t};\n}\n// EXTERNAL MODULE: ./components/header/style.css\nvar header_style = __webpack_require__(\"u3et\");\nvar header_style_default = /*#__PURE__*/__webpack_require__.n(header_style);\n\n// EXTERNAL MODULE: ./style/index.css\nvar style_0 = __webpack_require__(\"rq4c\");\nvar style_default_0 = /*#__PURE__*/__webpack_require__.n(style_0);\n\n// CONCATENATED MODULE: ./components/header/index.js\n\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n\n\n\n//import Toolbar from 'preact-material-components/Toolbar';\n\n//import Drawer from 'preact-material-components/Drawer';\n//import List from 'preact-material-components/List';\n\n\n\n\n\n\n//import 'preact-material-components/Toolbar/style.css';\n\n\n\n\n\n\n\nvar mapStateToProps = function mapStateToProps(state) {\n\treturn {\n\t\tauth_store: state.authentication,\n\t\troute_store: state.currentRoute\n\t};\n};\n\nvar header_mapDispatchToProps = function mapDispatchToProps(dispatch) {\n\treturn {\n\t\tlogout: function logout() {\n\t\t\tdispatch(logoutAction());\n\t\t},\n\n\t\tlogin: function login() {\n\t\t\tdispatch(loginAction());\n\t\t}\n\t};\n};\n\nvar header__ref = Object(preact_min[\"h\"])(\n\tTopAppBar_default.a.Title,\n\tnull,\n\tObject(preact_min[\"h\"])(\n\t\t'div',\n\t\t{ className: 'siteTitle' },\n\t\tObject(preact_min[\"h\"])(\n\t\t\t'span',\n\t\t\t{ className: 'greenHighlight' },\n\t\t\t'Demo'\n\t\t),\n\t\tObject(preact_min[\"h\"])('div', { className: 'wrenchIcon' }),\n\t\tObject(preact_min[\"h\"])(\n\t\t\t'span',\n\t\t\t{ className: 'orangeHighlight' },\n\t\t\t'Site'\n\t\t)\n\t)\n);\n\nvar _ref2 = Object(preact_min[\"h\"])(\n\tTopAppBar_default.a.Icon,\n\tnull,\n\t'settings'\n);\n\nvar _ref3 = Object(preact_min[\"h\"])(\n\tDialog_default.a.Header,\n\tnull,\n\t'Settings'\n);\n\nvar _ref4 = Object(preact_min[\"h\"])(\n\tDialog_default.a.Footer,\n\tnull,\n\tObject(preact_min[\"h\"])(\n\t\tDialog_default.a.FooterButton,\n\t\t{ accept: true },\n\t\t'okay'\n\t)\n);\n\nvar header_HeaderContent = function (_Component) {\n\t_inherits(HeaderContent, _Component);\n\n\tHeaderContent.prototype.closeDrawer = function closeDrawer() {\n\t\tthis.drawer.MDComponent.open = false;\n\t\tthis.state = {\n\t\t\tdarkThemeEnabled: false\n\t\t};\n\t};\n\n\tHeaderContent.prototype.checkImage = function checkImage(url, good, bad) {\n\t\tvar img = new Image();\n\t\timg.onload = good;\n\t\timg.onerror = bad;\n\t\timg.src = url;\n\t};\n\n\tHeaderContent.prototype.checkForAvatar = function checkForAvatar() {\n\t\tvar _this2 = this;\n\n\t\tvar currentUser = this.props.auth_store.user;\n\n\t\tif (currentUser && currentUser.photoURL) {\n\t\t\tthis.checkImage(currentUser.photoURL, function () {\n\t\t\t\t_this2.setState({ avatarURL: currentUser.photoURL });\n\t\t\t}, function () {\n\t\t\t\t_this2.setState({ avatarURL: './../assets/images/placeholder.png' });\n\t\t\t});\n\t\t}\n\t};\n\n\tfunction HeaderContent(props) {\n\t\t_classCallCheck(this, HeaderContent);\n\n\t\tvar _this = _possibleConstructorReturn(this, _Component.call(this, props));\n\n\t\t_this.login = function () {\n\t\t\t_this.props.login();\n\t\t};\n\n\t\t_this.logout = function () {\n\t\t\t_this.props.logout();\n\t\t};\n\n\t\t_this.openDrawer = function () {\n\t\t\treturn _this.drawer.MDComponent.open = true;\n\t\t};\n\n\t\t_this.openSettings = function () {\n\t\t\treturn _this.dialog.MDComponent.show();\n\t\t};\n\n\t\t_this.drawerRef = function (drawer) {\n\t\t\treturn _this.drawer = drawer;\n\t\t};\n\n\t\t_this.dialogRef = function (dialog) {\n\t\t\treturn _this.dialog = dialog;\n\t\t};\n\n\t\t_this.linkTo = function (path) {\n\t\t\treturn function () {\n\t\t\t\tObject(preact_router_es[\"route\"])(path);\n\t\t\t\t_this.closeDrawer();\n\t\t\t};\n\t\t};\n\n\t\t_this.goHome = _this.linkTo('/');\n\t\t_this.goToMyProfile = _this.linkTo('/profile');\n\t\t_this.goToChat = _this.linkTo('/chat');\n\t\t_this.goToQuestions = _this.linkTo('/questions');\n\t\t_this.goToPresentations = _this.linkTo('/presentations');\n\n\t\t_this.toggleDarkTheme = function () {\n\t\t\t_this.setState({\n\t\t\t\tdarkThemeEnabled: !_this.state.darkThemeEnabled\n\t\t\t}, function () {\n\t\t\t\tif (_this.state.darkThemeEnabled) {\n\t\t\t\t\tdocument.body.classList.add('mdc-theme--dark');\n\t\t\t\t} else {\n\t\t\t\t\tdocument.body.classList.remove('mdc-theme--dark');\n\t\t\t\t}\n\t\t\t});\n\t\t};\n\n\t\t_this.state = {\n\t\t\troute: _this.props.route,\n\t\t\tavatarURL: './../assets/images/placeholder.png'\n\t\t};\n\t\treturn _this;\n\t}\n\n\tHeaderContent.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {\n\t\tif (nextProps.route) {\n\t\t\tthis.setState({ route: nextProps.route }, this.checkForAvatar());\n\t\t} else {\n\t\t\tthis.checkForAvatar();\n\t\t}\n\n\t\tif (nextProps.auth_store.currentUser && !this.props.auth_store.currentUser) {\n\t\t\tconsole.log('GOT USER'); //!!!!\n\t\t}\n\t};\n\n\tHeaderContent.prototype.renderAvatar = function renderAvatar() {\n\t\tvar avatarStyle = 'background-image: url(' + this.state.avatarURL + ');';\n\t\treturn Object(preact_min[\"h\"])('span', { className: header_style_default.a.avatar, style: avatarStyle });\n\t};\n\n\tHeaderContent.prototype.render = function render() {\n\t\tvar currentUser = this.props.auth_store.user;\n\t\tvar route = this.props.route_store.route;\n\n\t\t//console.log('route', route);\n\n\t\tvar isLoginPage = false;\n\n\t\tif (route && route.indexOf('/login') > -1) {\n\t\t\tisLoginPage = true;\n\t\t}\n\n\t\tvar cx = bind_default.a.bind(header_style_default.a);\n\n\t\tvar toolbarClasses = cx({\n\t\t\theader: true,\n\t\t\ttoolbar: true\n\t\t});\n\n\t\tvar showMenu = false;\n\t\tvar menuClass = showMenu ? '' : 'hidden';\n\n\t\treturn Object(preact_min[\"h\"])(\n\t\t\t'div',\n\t\t\tnull,\n\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\tTopAppBar_default.a,\n\t\t\t\t{ className: toolbarClasses },\n\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\tTopAppBar_default.a.Row,\n\t\t\t\t\tnull,\n\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\tTopAppBar_default.a.Section,\n\t\t\t\t\t\t{ 'align-start': true },\n\t\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\t\tTopAppBar_default.a.Icon,\n\t\t\t\t\t\t\t{ menu: true, onClick: this.openDrawer, 'class': [menuClass, 'material-icons', 'mdc-toolbar__icon', 'mdc-toolbar__menu-icon'].join(' ') },\n\t\t\t\t\t\t\t'menu'\n\t\t\t\t\t\t),\n\t\t\t\t\t\theader__ref\n\t\t\t\t\t),\n\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\tTopAppBar_default.a.Section,\n\t\t\t\t\t\t{ className: header_style_default.a.greeting },\n\t\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\t\t'div',\n\t\t\t\t\t\t\tnull,\n\t\t\t\t\t\t\t!currentUser ? Object(preact_min[\"h\"])(\n\t\t\t\t\t\t\t\t'div',\n\t\t\t\t\t\t\t\t{ className: header_style_default.a.login_div },\n\t\t\t\t\t\t\t\t!isLoginPage && Object(preact_min[\"h\"])(\n\t\t\t\t\t\t\t\t\tmatch[\"Link\"],\n\t\t\t\t\t\t\t\t\t{ 'class': header_style_default.a.login, activeClassName: header_style_default.a.active, onClick: this.login },\n\t\t\t\t\t\t\t\t\t'Login'\n\t\t\t\t\t\t\t\t)\n\t\t\t\t\t\t\t) : Object(preact_min[\"h\"])(\n\t\t\t\t\t\t\t\t'div',\n\t\t\t\t\t\t\t\tnull,\n\t\t\t\t\t\t\t\tthis.renderAvatar(),\n\t\t\t\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\t\t\t\t'div',\n\t\t\t\t\t\t\t\t\tnull,\n\t\t\t\t\t\t\t\t\t'Welcome back, ',\n\t\t\t\t\t\t\t\t\tcurrentUser.displayName\n\t\t\t\t\t\t\t\t),\n\t\t\t\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\t\t\t\t'div',\n\t\t\t\t\t\t\t\t\t{ className: header_style_default.a.logoutContainer },\n\t\t\t\t\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\t\t\t\t\tmatch[\"Link\"],\n\t\t\t\t\t\t\t\t\t\t{ 'class': header_style_default.a.logout, activeClassName: header_style_default.a.active, onClick: this.logout },\n\t\t\t\t\t\t\t\t\t\t'Logout'\n\t\t\t\t\t\t\t\t\t)\n\t\t\t\t\t\t\t\t)\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t)\n\t\t\t\t\t),\n\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\tTopAppBar_default.a.Section,\n\t\t\t\t\t\t{ 'align-end': true, onClick: this.openSettings, className: header_style_default.a.settings },\n\t\t\t\t\t\t_ref2\n\t\t\t\t\t)\n\t\t\t\t)\n\t\t\t),\n\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\tDialog_default.a,\n\t\t\t\t{ ref: this.dialogRef },\n\t\t\t\t_ref3,\n\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\tDialog_default.a.Body,\n\t\t\t\t\tnull,\n\t\t\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t\t\t'div',\n\t\t\t\t\t\tnull,\n\t\t\t\t\t\t'Enable dark theme ',\n\t\t\t\t\t\tObject(preact_min[\"h\"])(Switch_default.a, { onClick: this.toggleDarkTheme })\n\t\t\t\t\t)\n\t\t\t\t),\n\t\t\t\t_ref4\n\t\t\t)\n\t\t);\n\t};\n\n\treturn HeaderContent;\n}(preact_min[\"Component\"]);\n\n/* harmony default export */ var header = (Object(preact_redux_esm[\"b\" /* connect */])(mapStateToProps, header_mapDispatchToProps)(header_HeaderContent));\n// EXTERNAL MODULE: /Users/seanrhea/.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/lib/components/async.js\nvar components_async = __webpack_require__(\"nPht\");\nvar async_default = /*#__PURE__*/__webpack_require__.n(components_async);\n\n// CONCATENATED MODULE: ./routes/home/index.js\n\n\t\t\n\n\t\tfunction load(cb) {\n\t\t\t__webpack_require__.e/* require.ensure */(4).then((function (require) {\n\t\t\t\tcb( __webpack_require__(\"Hg7w\") );\n\t\t\t}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);\n\t\t}\n\n\t\t/* harmony default export */ var home = (async_default()(load));\n\t\n// CONCATENATED MODULE: ./routes/profile/index.js\n\n\t\t\n\n\t\tfunction profile_load(cb) {\n\t\t\t__webpack_require__.e/* require.ensure */(2).then((function (require) {\n\t\t\t\tcb( __webpack_require__(\"viNI\") );\n\t\t\t}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);\n\t\t}\n\n\t\t/* harmony default export */ var profile = (async_default()(profile_load));\n\t\n// CONCATENATED MODULE: ./routes/chat/index.js\n\n\t\t\n\n\t\tfunction chat_load(cb) {\n\t\t\t__webpack_require__.e/* require.ensure */(0).then((function (require) {\n\t\t\t\tcb( __webpack_require__(\"ULnj\") );\n\t\t\t}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);\n\t\t}\n\n\t\t/* harmony default export */ var chat = (async_default()(chat_load));\n\t\n// CONCATENATED MODULE: ./routes/questions/index.js\n\n\t\t\n\n\t\tfunction questions_load(cb) {\n\t\t\t__webpack_require__.e/* require.ensure */(3).then((function (require) {\n\t\t\t\tcb( __webpack_require__(\"C7j4\") );\n\t\t\t}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);\n\t\t}\n\n\t\t/* harmony default export */ var questions = (async_default()(questions_load));\n\t\n// CONCATENATED MODULE: ./routes/presentations/index.js\n\n\t\t\n\n\t\tfunction presentations_load(cb) {\n\t\t\t__webpack_require__.e/* require.ensure */(6).then((function (require) {\n\t\t\t\tcb( __webpack_require__(\"AKIC\") );\n\t\t\t}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);\n\t\t}\n\n\t\t/* harmony default export */ var presentations = (async_default()(presentations_load));\n\t\n// CONCATENATED MODULE: ./routes/map/index.js\n\n\t\t\n\n\t\tfunction map_load(cb) {\n\t\t\t__webpack_require__.e/* require.ensure */(1).then((function (require) {\n\t\t\t\tcb( __webpack_require__(\"ow9P\") );\n\t\t\t}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);\n\t\t}\n\n\t\t/* harmony default export */ var map = (async_default()(map_load));\n\t\n// CONCATENATED MODULE: ./routes/404/index.js\n\n\t\t\n\n\t\tfunction _04_load(cb) {\n\t\t\t__webpack_require__.e/* require.ensure */(5).then((function (require) {\n\t\t\t\tcb( __webpack_require__(\"D+aq\") );\n\t\t\t}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);\n\t\t}\n\n\t\t/* harmony default export */ var _04 = (async_default()(_04_load));\n\t\n// EXTERNAL MODULE: ./components/nav/style.css\nvar nav_style = __webpack_require__(\"NDhg\");\nvar nav_style_default = /*#__PURE__*/__webpack_require__.n(nav_style);\n\n// CONCATENATED MODULE: ./components/nav/navTile.js\n\n\nfunction navTile__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction navTile__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction navTile__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n\n\n\n\n\n\n\nvar navTile_mapStateToProps = function mapStateToProps(state) {\n\treturn {\n\t\troute_store: state.currentRoute\n\t};\n};\n\nvar navTile_NavTile = function (_Component) {\n\tnavTile__inherits(NavTile, _Component);\n\n\tfunction NavTile() {\n\t\tvar _temp, _this, _ret;\n\n\t\tnavTile__classCallCheck(this, NavTile);\n\n\t\tfor (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\targs[_key] = arguments[_key];\n\t\t}\n\n\t\treturn _ret = (_temp = (_this = navTile__possibleConstructorReturn(this, _Component.call.apply(_Component, [this].concat(args))), _this), _this.linkTo = function (path) {\n\t\t\treturn function () {\n\t\t\t\tObject(preact_router_es[\"route\"])(path);\n\t\t\t};\n\t\t}, _this.doNav = function () {\n\t\t\tif (typeof _this.props.route !== 'undefined') {\n\t\t\t\tObject(preact_router_es[\"route\"])(_this.props.route);\n\t\t\t}\n\t\t}, _temp), navTile__possibleConstructorReturn(_this, _ret);\n\t}\n\n\tNavTile.prototype.render = function render() {\n\t\tvar currentRoute = this.props.route_store.route;\n\t\tvar _props = this.props,\n\t\t    label = _props.label,\n\t\t    icon = _props.icon;\n\n\t\tvar cx = bind_default.a.bind(nav_style_default.a);\n\n\t\tvar tileAttr = {\n\t\t\tnavItem: true,\n\t\t\tdisabled: typeof this.props.route === 'undefined'\n\t\t};\n\n\t\tvar innerAttr = {\n\t\t\tnavIcon: true,\n\t\t\t'material-icons': true\n\t\t};\n\n\t\t//console.log(`route for ${label}, ${currentRoute}, ${this.props.route}`);\n\n\t\tif (currentRoute === this.props.route) {\n\t\t\tinnerAttr.active = true;\n\t\t}\n\n\t\tvar tileClassName = cx(tileAttr);\n\t\tvar innerClassName = cx(innerAttr);\n\n\t\treturn Object(preact_min[\"h\"])(\n\t\t\tmatch[\"Link\"],\n\t\t\t{ to: '/', onClick: this.doNav, className: tileClassName },\n\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t'i',\n\t\t\t\t{ 'aria-hidden': 'true', className: innerClassName },\n\t\t\t\ticon\n\t\t\t),\n\t\t\tObject(preact_min[\"h\"])(\n\t\t\t\t'div',\n\t\t\t\t{ className: nav_style_default.a.label },\n\t\t\t\tlabel\n\t\t\t)\n\t\t);\n\t};\n\n\treturn NavTile;\n}(preact_min[\"Component\"]);\n\n/* harmony default export */ var navTile = (Object(preact_redux_esm[\"b\" /* connect */])(navTile_mapStateToProps)(navTile_NavTile));\n// CONCATENATED MODULE: ./components/nav/index.js\n\n\nfunction nav__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction nav__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction nav__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n\n\n\n\n\nvar nav_mapStateToProps = function mapStateToProps(state) {\n\treturn {\n\t\tuser: state.authentication.user\n\t};\n};\n\nvar nav__ref = Object(preact_min[\"h\"])(navTile, { label: 'Home', icon: 'home', route: '/' });\n\nvar nav__ref2 = Object(preact_min[\"h\"])(navTile, { label: 'Chat', icon: 'chat_bubble_outline', route: '/chat' });\n\nvar nav__ref3 = Object(preact_min[\"h\"])(navTile, { label: 'Chat', icon: 'chat_bubble_outline' });\n\nvar nav__ref4 = Object(preact_min[\"h\"])(navTile, { label: 'Census Map', icon: 'language', route: '/map' });\n\nvar _ref5 = Object(preact_min[\"h\"])(navTile, { label: 'Profile', icon: 'account_circle', route: '/profile' });\n\nvar _ref6 = Object(preact_min[\"h\"])(navTile, { label: 'Profile', icon: 'account_circle' });\n\nvar nav_NavBar = function (_Component) {\n\tnav__inherits(NavBar, _Component);\n\n\tfunction NavBar() {\n\t\tnav__classCallCheck(this, NavBar);\n\n\t\treturn nav__possibleConstructorReturn(this, _Component.apply(this, arguments));\n\t}\n\n\tNavBar.prototype.render = function render() {\n\t\treturn Object(preact_min[\"h\"])(\n\t\t\t'div',\n\t\t\t{ className: nav_style_default.a.navBar },\n\t\t\tnav__ref,\n\t\t\tthis.props.user ? nav__ref2 : nav__ref3,\n\t\t\tnav__ref4,\n\t\t\tthis.props.user ? _ref5 : _ref6\n\t\t);\n\t};\n\n\treturn NavBar;\n}(preact_min[\"Component\"]);\n\n/* harmony default export */ var nav = (Object(preact_redux_esm[\"b\" /* connect */])(nav_mapStateToProps)(nav_NavBar));\n// EXTERNAL MODULE: ../node_modules/query-string/index.js\nvar query_string = __webpack_require__(\"/Fvp\");\nvar query_string_default = /*#__PURE__*/__webpack_require__.n(query_string);\n\n// EXTERNAL MODULE: ./firebase/db.js\nvar db = __webpack_require__(\"EEhW\");\n\n// EXTERNAL MODULE: ../node_modules/warning/browser.js\nvar browser = __webpack_require__(\"/sXU\");\nvar browser_default = /*#__PURE__*/__webpack_require__.n(browser);\n\n// EXTERNAL MODULE: ../node_modules/invariant/browser.js\nvar invariant_browser = __webpack_require__(\"2gTp\");\nvar invariant_browser_default = /*#__PURE__*/__webpack_require__.n(invariant_browser);\n\n// CONCATENATED MODULE: ../node_modules/resolve-pathname/index.js\nfunction isAbsolute(pathname) {\n  return pathname.charAt(0) === '/';\n}\n\n// About 1.5x faster than the two-arg version of Array#splice()\nfunction spliceOne(list, index) {\n  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) {\n    list[i] = list[k];\n  }\n\n  list.pop();\n}\n\n// This implementation is based heavily on node's url.parse\nfunction resolvePathname(to) {\n  var from = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n\n  var toParts = to && to.split('/') || [];\n  var fromParts = from && from.split('/') || [];\n\n  var isToAbs = to && isAbsolute(to);\n  var isFromAbs = from && isAbsolute(from);\n  var mustEndAbs = isToAbs || isFromAbs;\n\n  if (to && isAbsolute(to)) {\n    // to is absolute\n    fromParts = toParts;\n  } else if (toParts.length) {\n    // to is relative, drop the filename\n    fromParts.pop();\n    fromParts = fromParts.concat(toParts);\n  }\n\n  if (!fromParts.length) return '/';\n\n  var hasTrailingSlash = void 0;\n  if (fromParts.length) {\n    var last = fromParts[fromParts.length - 1];\n    hasTrailingSlash = last === '.' || last === '..' || last === '';\n  } else {\n    hasTrailingSlash = false;\n  }\n\n  var up = 0;\n  for (var i = fromParts.length; i >= 0; i--) {\n    var part = fromParts[i];\n\n    if (part === '.') {\n      spliceOne(fromParts, i);\n    } else if (part === '..') {\n      spliceOne(fromParts, i);\n      up++;\n    } else if (up) {\n      spliceOne(fromParts, i);\n      up--;\n    }\n  }\n\n  if (!mustEndAbs) for (; up--; up) {\n    fromParts.unshift('..');\n  }if (mustEndAbs && fromParts[0] !== '' && (!fromParts[0] || !isAbsolute(fromParts[0]))) fromParts.unshift('');\n\n  var result = fromParts.join('/');\n\n  if (hasTrailingSlash && result.substr(-1) !== '/') result += '/';\n\n  return result;\n}\n\n/* harmony default export */ var resolve_pathname = (resolvePathname);\n// CONCATENATED MODULE: ../node_modules/value-equal/index.js\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n  return typeof obj;\n} : function (obj) {\n  return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\n\nfunction valueEqual(a, b) {\n  if (a === b) return true;\n\n  if (a == null || b == null) return false;\n\n  if (Array.isArray(a)) {\n    return Array.isArray(b) && a.length === b.length && a.every(function (item, index) {\n      return valueEqual(item, b[index]);\n    });\n  }\n\n  var aType = typeof a === 'undefined' ? 'undefined' : _typeof(a);\n  var bType = typeof b === 'undefined' ? 'undefined' : _typeof(b);\n\n  if (aType !== bType) return false;\n\n  if (aType === 'object') {\n    var aValue = a.valueOf();\n    var bValue = b.valueOf();\n\n    if (aValue !== a || bValue !== b) return valueEqual(aValue, bValue);\n\n    var aKeys = Object.keys(a);\n    var bKeys = Object.keys(b);\n\n    if (aKeys.length !== bKeys.length) return false;\n\n    return aKeys.every(function (key) {\n      return valueEqual(a[key], b[key]);\n    });\n  }\n\n  return false;\n}\n\n/* harmony default export */ var value_equal = (valueEqual);\n// CONCATENATED MODULE: ../node_modules/history/es/PathUtils.js\nvar addLeadingSlash = function addLeadingSlash(path) {\n  return path.charAt(0) === '/' ? path : '/' + path;\n};\n\nvar stripLeadingSlash = function stripLeadingSlash(path) {\n  return path.charAt(0) === '/' ? path.substr(1) : path;\n};\n\nvar hasBasename = function hasBasename(path, prefix) {\n  return new RegExp('^' + prefix + '(\\\\/|\\\\?|#|$)', 'i').test(path);\n};\n\nvar stripBasename = function stripBasename(path, prefix) {\n  return hasBasename(path, prefix) ? path.substr(prefix.length) : path;\n};\n\nvar stripTrailingSlash = function stripTrailingSlash(path) {\n  return path.charAt(path.length - 1) === '/' ? path.slice(0, -1) : path;\n};\n\nvar parsePath = function parsePath(path) {\n  var pathname = path || '/';\n  var search = '';\n  var hash = '';\n\n  var hashIndex = pathname.indexOf('#');\n  if (hashIndex !== -1) {\n    hash = pathname.substr(hashIndex);\n    pathname = pathname.substr(0, hashIndex);\n  }\n\n  var searchIndex = pathname.indexOf('?');\n  if (searchIndex !== -1) {\n    search = pathname.substr(searchIndex);\n    pathname = pathname.substr(0, searchIndex);\n  }\n\n  return {\n    pathname: pathname,\n    search: search === '?' ? '' : search,\n    hash: hash === '#' ? '' : hash\n  };\n};\n\nvar createPath = function createPath(location) {\n  var pathname = location.pathname,\n      search = location.search,\n      hash = location.hash;\n\n  var path = pathname || '/';\n\n  if (search && search !== '?') path += search.charAt(0) === '?' ? search : '?' + search;\n\n  if (hash && hash !== '#') path += hash.charAt(0) === '#' ? hash : '#' + hash;\n\n  return path;\n};\n// CONCATENATED MODULE: ../node_modules/history/es/LocationUtils.js\nvar _extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }return target;\n};\n\n\n\n\n\nvar LocationUtils_createLocation = function createLocation(path, state, key, currentLocation) {\n  var location = void 0;\n  if (typeof path === 'string') {\n    // Two-arg form: push(path, state)\n    location = parsePath(path);\n    location.state = state;\n  } else {\n    // One-arg form: push(location)\n    location = _extends({}, path);\n\n    if (location.pathname === undefined) location.pathname = '';\n\n    if (location.search) {\n      if (location.search.charAt(0) !== '?') location.search = '?' + location.search;\n    } else {\n      location.search = '';\n    }\n\n    if (location.hash) {\n      if (location.hash.charAt(0) !== '#') location.hash = '#' + location.hash;\n    } else {\n      location.hash = '';\n    }\n\n    if (state !== undefined && location.state === undefined) location.state = state;\n  }\n\n  try {\n    location.pathname = decodeURI(location.pathname);\n  } catch (e) {\n    if (e instanceof URIError) {\n      throw new URIError('Pathname \"' + location.pathname + '\" could not be decoded. ' + 'This is likely caused by an invalid percent-encoding.');\n    } else {\n      throw e;\n    }\n  }\n\n  if (key) location.key = key;\n\n  if (currentLocation) {\n    // Resolve incomplete/relative pathname relative to current location.\n    if (!location.pathname) {\n      location.pathname = currentLocation.pathname;\n    } else if (location.pathname.charAt(0) !== '/') {\n      location.pathname = resolve_pathname(location.pathname, currentLocation.pathname);\n    }\n  } else {\n    // When there is no prior location and pathname is empty, set it to /\n    if (!location.pathname) {\n      location.pathname = '/';\n    }\n  }\n\n  return location;\n};\n\nvar LocationUtils_locationsAreEqual = function locationsAreEqual(a, b) {\n  return a.pathname === b.pathname && a.search === b.search && a.hash === b.hash && a.key === b.key && value_equal(a.state, b.state);\n};\n// CONCATENATED MODULE: ../node_modules/history/es/createTransitionManager.js\n\n\nvar createTransitionManager_createTransitionManager = function createTransitionManager() {\n  var prompt = null;\n\n  var setPrompt = function setPrompt(nextPrompt) {\n    browser_default()(prompt == null, 'A history supports only one prompt at a time');\n\n    prompt = nextPrompt;\n\n    return function () {\n      if (prompt === nextPrompt) prompt = null;\n    };\n  };\n\n  var confirmTransitionTo = function confirmTransitionTo(location, action, getUserConfirmation, callback) {\n    // TODO: If another transition starts while we're still confirming\n    // the previous one, we may end up in a weird state. Figure out the\n    // best way to handle this.\n    if (prompt != null) {\n      var result = typeof prompt === 'function' ? prompt(location, action) : prompt;\n\n      if (typeof result === 'string') {\n        if (typeof getUserConfirmation === 'function') {\n          getUserConfirmation(result, callback);\n        } else {\n          browser_default()(false, 'A history needs a getUserConfirmation function in order to use a prompt message');\n\n          callback(true);\n        }\n      } else {\n        // Return false from a transition hook to cancel the transition.\n        callback(result !== false);\n      }\n    } else {\n      callback(true);\n    }\n  };\n\n  var listeners = [];\n\n  var appendListener = function appendListener(fn) {\n    var isActive = true;\n\n    var listener = function listener() {\n      if (isActive) fn.apply(undefined, arguments);\n    };\n\n    listeners.push(listener);\n\n    return function () {\n      isActive = false;\n      listeners = listeners.filter(function (item) {\n        return item !== listener;\n      });\n    };\n  };\n\n  var notifyListeners = function notifyListeners() {\n    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    listeners.forEach(function (listener) {\n      return listener.apply(undefined, args);\n    });\n  };\n\n  return {\n    setPrompt: setPrompt,\n    confirmTransitionTo: confirmTransitionTo,\n    appendListener: appendListener,\n    notifyListeners: notifyListeners\n  };\n};\n\n/* harmony default export */ var es_createTransitionManager = (createTransitionManager_createTransitionManager);\n// CONCATENATED MODULE: ../node_modules/history/es/DOMUtils.js\nvar canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);\n\nvar addEventListener = function addEventListener(node, event, listener) {\n  return node.addEventListener ? node.addEventListener(event, listener, false) : node.attachEvent('on' + event, listener);\n};\n\nvar removeEventListener = function removeEventListener(node, event, listener) {\n  return node.removeEventListener ? node.removeEventListener(event, listener, false) : node.detachEvent('on' + event, listener);\n};\n\nvar getConfirmation = function getConfirmation(message, callback) {\n  return callback(window.confirm(message));\n}; // eslint-disable-line no-alert\n\n/**\n * Returns true if the HTML5 history API is supported. Taken from Modernizr.\n *\n * https://github.com/Modernizr/Modernizr/blob/master/LICENSE\n * https://github.com/Modernizr/Modernizr/blob/master/feature-detects/history.js\n * changed to avoid false negatives for Windows Phones: https://github.com/reactjs/react-router/issues/586\n */\nvar supportsHistory = function supportsHistory() {\n  var ua = window.navigator.userAgent;\n\n  if ((ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) && ua.indexOf('Mobile Safari') !== -1 && ua.indexOf('Chrome') === -1 && ua.indexOf('Windows Phone') === -1) return false;\n\n  return window.history && 'pushState' in window.history;\n};\n\n/**\n * Returns true if browser fires popstate on hash change.\n * IE10 and IE11 do not.\n */\nvar supportsPopStateOnHashChange = function supportsPopStateOnHashChange() {\n  return window.navigator.userAgent.indexOf('Trident') === -1;\n};\n\n/**\n * Returns false if using go(n) with hash history causes a full page reload.\n */\nvar supportsGoWithoutReloadUsingHash = function supportsGoWithoutReloadUsingHash() {\n  return window.navigator.userAgent.indexOf('Firefox') === -1;\n};\n\n/**\n * Returns true if a given popstate event is an extraneous WebKit event.\n * Accounts for the fact that Chrome on iOS fires real popstate events\n * containing undefined state when pressing the back button.\n */\nvar isExtraneousPopstateEvent = function isExtraneousPopstateEvent(event) {\n  return event.state === undefined && navigator.userAgent.indexOf('CriOS') === -1;\n};\n// CONCATENATED MODULE: ../node_modules/history/es/createBrowserHistory.js\nvar createBrowserHistory__typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n  return typeof obj;\n} : function (obj) {\n  return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\n\nvar createBrowserHistory__extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }return target;\n};\n\n\n\n\n\n\n\n\nvar PopStateEvent = 'popstate';\nvar HashChangeEvent = 'hashchange';\n\nvar getHistoryState = function getHistoryState() {\n  try {\n    return window.history.state || {};\n  } catch (e) {\n    // IE 11 sometimes throws when accessing window.history.state\n    // See https://github.com/ReactTraining/history/pull/289\n    return {};\n  }\n};\n\n/**\n * Creates a history object that uses the HTML5 history API including\n * pushState, replaceState, and the popstate event.\n */\nvar createBrowserHistory_createBrowserHistory = function createBrowserHistory() {\n  var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n  invariant_browser_default()(canUseDOM, 'Browser history needs a DOM');\n\n  var globalHistory = window.history;\n  var canUseHistory = supportsHistory();\n  var needsHashChangeListener = !supportsPopStateOnHashChange();\n\n  var _props$forceRefresh = props.forceRefresh,\n      forceRefresh = _props$forceRefresh === undefined ? false : _props$forceRefresh,\n      _props$getUserConfirm = props.getUserConfirmation,\n      getUserConfirmation = _props$getUserConfirm === undefined ? getConfirmation : _props$getUserConfirm,\n      _props$keyLength = props.keyLength,\n      keyLength = _props$keyLength === undefined ? 6 : _props$keyLength;\n\n  var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';\n\n  var getDOMLocation = function getDOMLocation(historyState) {\n    var _ref = historyState || {},\n        key = _ref.key,\n        state = _ref.state;\n\n    var _window$location = window.location,\n        pathname = _window$location.pathname,\n        search = _window$location.search,\n        hash = _window$location.hash;\n\n    var path = pathname + search + hash;\n\n    browser_default()(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path \"' + path + '\" to begin with \"' + basename + '\".');\n\n    if (basename) path = stripBasename(path, basename);\n\n    return LocationUtils_createLocation(path, state, key);\n  };\n\n  var createKey = function createKey() {\n    return Math.random().toString(36).substr(2, keyLength);\n  };\n\n  var transitionManager = es_createTransitionManager();\n\n  var setState = function setState(nextState) {\n    createBrowserHistory__extends(history, nextState);\n\n    history.length = globalHistory.length;\n\n    transitionManager.notifyListeners(history.location, history.action);\n  };\n\n  var handlePopState = function handlePopState(event) {\n    // Ignore extraneous popstate events in WebKit.\n    if (isExtraneousPopstateEvent(event)) return;\n\n    handlePop(getDOMLocation(event.state));\n  };\n\n  var handleHashChange = function handleHashChange() {\n    handlePop(getDOMLocation(getHistoryState()));\n  };\n\n  var forceNextPop = false;\n\n  var handlePop = function handlePop(location) {\n    if (forceNextPop) {\n      forceNextPop = false;\n      setState();\n    } else {\n      var action = 'POP';\n\n      transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n        if (ok) {\n          setState({ action: action, location: location });\n        } else {\n          revertPop(location);\n        }\n      });\n    }\n  };\n\n  var revertPop = function revertPop(fromLocation) {\n    var toLocation = history.location;\n\n    // TODO: We could probably make this more reliable by\n    // keeping a list of keys we've seen in sessionStorage.\n    // Instead, we just default to 0 for keys we don't know.\n\n    var toIndex = allKeys.indexOf(toLocation.key);\n\n    if (toIndex === -1) toIndex = 0;\n\n    var fromIndex = allKeys.indexOf(fromLocation.key);\n\n    if (fromIndex === -1) fromIndex = 0;\n\n    var delta = toIndex - fromIndex;\n\n    if (delta) {\n      forceNextPop = true;\n      go(delta);\n    }\n  };\n\n  var initialLocation = getDOMLocation(getHistoryState());\n  var allKeys = [initialLocation.key];\n\n  // Public interface\n\n  var createHref = function createHref(location) {\n    return basename + createPath(location);\n  };\n\n  var push = function push(path, state) {\n    browser_default()(!((typeof path === 'undefined' ? 'undefined' : createBrowserHistory__typeof(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored');\n\n    var action = 'PUSH';\n    var location = LocationUtils_createLocation(path, state, createKey(), history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var href = createHref(location);\n      var key = location.key,\n          state = location.state;\n\n      if (canUseHistory) {\n        globalHistory.pushState({ key: key, state: state }, null, href);\n\n        if (forceRefresh) {\n          window.location.href = href;\n        } else {\n          var prevIndex = allKeys.indexOf(history.location.key);\n          var nextKeys = allKeys.slice(0, prevIndex === -1 ? 0 : prevIndex + 1);\n\n          nextKeys.push(location.key);\n          allKeys = nextKeys;\n\n          setState({ action: action, location: location });\n        }\n      } else {\n        browser_default()(state === undefined, 'Browser history cannot push state in browsers that do not support HTML5 history');\n\n        window.location.href = href;\n      }\n    });\n  };\n\n  var replace = function replace(path, state) {\n    browser_default()(!((typeof path === 'undefined' ? 'undefined' : createBrowserHistory__typeof(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to replace when the 1st ' + 'argument is a location-like object that already has state; it is ignored');\n\n    var action = 'REPLACE';\n    var location = LocationUtils_createLocation(path, state, createKey(), history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var href = createHref(location);\n      var key = location.key,\n          state = location.state;\n\n      if (canUseHistory) {\n        globalHistory.replaceState({ key: key, state: state }, null, href);\n\n        if (forceRefresh) {\n          window.location.replace(href);\n        } else {\n          var prevIndex = allKeys.indexOf(history.location.key);\n\n          if (prevIndex !== -1) allKeys[prevIndex] = location.key;\n\n          setState({ action: action, location: location });\n        }\n      } else {\n        browser_default()(state === undefined, 'Browser history cannot replace state in browsers that do not support HTML5 history');\n\n        window.location.replace(href);\n      }\n    });\n  };\n\n  var go = function go(n) {\n    globalHistory.go(n);\n  };\n\n  var goBack = function goBack() {\n    return go(-1);\n  };\n\n  var goForward = function goForward() {\n    return go(1);\n  };\n\n  var listenerCount = 0;\n\n  var checkDOMListeners = function checkDOMListeners(delta) {\n    listenerCount += delta;\n\n    if (listenerCount === 1) {\n      addEventListener(window, PopStateEvent, handlePopState);\n\n      if (needsHashChangeListener) addEventListener(window, HashChangeEvent, handleHashChange);\n    } else if (listenerCount === 0) {\n      removeEventListener(window, PopStateEvent, handlePopState);\n\n      if (needsHashChangeListener) removeEventListener(window, HashChangeEvent, handleHashChange);\n    }\n  };\n\n  var isBlocked = false;\n\n  var block = function block() {\n    var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n\n    var unblock = transitionManager.setPrompt(prompt);\n\n    if (!isBlocked) {\n      checkDOMListeners(1);\n      isBlocked = true;\n    }\n\n    return function () {\n      if (isBlocked) {\n        isBlocked = false;\n        checkDOMListeners(-1);\n      }\n\n      return unblock();\n    };\n  };\n\n  var listen = function listen(listener) {\n    var unlisten = transitionManager.appendListener(listener);\n    checkDOMListeners(1);\n\n    return function () {\n      checkDOMListeners(-1);\n      unlisten();\n    };\n  };\n\n  var history = {\n    length: globalHistory.length,\n    action: 'POP',\n    location: initialLocation,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    block: block,\n    listen: listen\n  };\n\n  return history;\n};\n\n/* harmony default export */ var es_createBrowserHistory = (createBrowserHistory_createBrowserHistory);\n// CONCATENATED MODULE: ../node_modules/history/es/createHashHistory.js\nvar createHashHistory__extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }return target;\n};\n\n\n\n\n\n\n\n\nvar createHashHistory_HashChangeEvent = 'hashchange';\n\nvar HashPathCoders = {\n  hashbang: {\n    encodePath: function encodePath(path) {\n      return path.charAt(0) === '!' ? path : '!/' + stripLeadingSlash(path);\n    },\n    decodePath: function decodePath(path) {\n      return path.charAt(0) === '!' ? path.substr(1) : path;\n    }\n  },\n  noslash: {\n    encodePath: stripLeadingSlash,\n    decodePath: addLeadingSlash\n  },\n  slash: {\n    encodePath: addLeadingSlash,\n    decodePath: addLeadingSlash\n  }\n};\n\nvar getHashPath = function getHashPath() {\n  // We can't use window.location.hash here because it's not\n  // consistent across browsers - Firefox will pre-decode it!\n  var href = window.location.href;\n  var hashIndex = href.indexOf('#');\n  return hashIndex === -1 ? '' : href.substring(hashIndex + 1);\n};\n\nvar pushHashPath = function pushHashPath(path) {\n  return window.location.hash = path;\n};\n\nvar replaceHashPath = function replaceHashPath(path) {\n  var hashIndex = window.location.href.indexOf('#');\n\n  window.location.replace(window.location.href.slice(0, hashIndex >= 0 ? hashIndex : 0) + '#' + path);\n};\n\nvar createHashHistory_createHashHistory = function createHashHistory() {\n  var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n  invariant_browser_default()(canUseDOM, 'Hash history needs a DOM');\n\n  var globalHistory = window.history;\n  var canGoWithoutReload = supportsGoWithoutReloadUsingHash();\n\n  var _props$getUserConfirm = props.getUserConfirmation,\n      getUserConfirmation = _props$getUserConfirm === undefined ? getConfirmation : _props$getUserConfirm,\n      _props$hashType = props.hashType,\n      hashType = _props$hashType === undefined ? 'slash' : _props$hashType;\n\n  var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';\n\n  var _HashPathCoders$hashT = HashPathCoders[hashType],\n      encodePath = _HashPathCoders$hashT.encodePath,\n      decodePath = _HashPathCoders$hashT.decodePath;\n\n  var getDOMLocation = function getDOMLocation() {\n    var path = decodePath(getHashPath());\n\n    browser_default()(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path \"' + path + '\" to begin with \"' + basename + '\".');\n\n    if (basename) path = stripBasename(path, basename);\n\n    return LocationUtils_createLocation(path);\n  };\n\n  var transitionManager = es_createTransitionManager();\n\n  var setState = function setState(nextState) {\n    createHashHistory__extends(history, nextState);\n\n    history.length = globalHistory.length;\n\n    transitionManager.notifyListeners(history.location, history.action);\n  };\n\n  var forceNextPop = false;\n  var ignorePath = null;\n\n  var handleHashChange = function handleHashChange() {\n    var path = getHashPath();\n    var encodedPath = encodePath(path);\n\n    if (path !== encodedPath) {\n      // Ensure we always have a properly-encoded hash.\n      replaceHashPath(encodedPath);\n    } else {\n      var location = getDOMLocation();\n      var prevLocation = history.location;\n\n      if (!forceNextPop && LocationUtils_locationsAreEqual(prevLocation, location)) return; // A hashchange doesn't always == location change.\n\n      if (ignorePath === createPath(location)) return; // Ignore this change; we already setState in push/replace.\n\n      ignorePath = null;\n\n      handlePop(location);\n    }\n  };\n\n  var handlePop = function handlePop(location) {\n    if (forceNextPop) {\n      forceNextPop = false;\n      setState();\n    } else {\n      var action = 'POP';\n\n      transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n        if (ok) {\n          setState({ action: action, location: location });\n        } else {\n          revertPop(location);\n        }\n      });\n    }\n  };\n\n  var revertPop = function revertPop(fromLocation) {\n    var toLocation = history.location;\n\n    // TODO: We could probably make this more reliable by\n    // keeping a list of paths we've seen in sessionStorage.\n    // Instead, we just default to 0 for paths we don't know.\n\n    var toIndex = allPaths.lastIndexOf(createPath(toLocation));\n\n    if (toIndex === -1) toIndex = 0;\n\n    var fromIndex = allPaths.lastIndexOf(createPath(fromLocation));\n\n    if (fromIndex === -1) fromIndex = 0;\n\n    var delta = toIndex - fromIndex;\n\n    if (delta) {\n      forceNextPop = true;\n      go(delta);\n    }\n  };\n\n  // Ensure the hash is encoded properly before doing anything else.\n  var path = getHashPath();\n  var encodedPath = encodePath(path);\n\n  if (path !== encodedPath) replaceHashPath(encodedPath);\n\n  var initialLocation = getDOMLocation();\n  var allPaths = [createPath(initialLocation)];\n\n  // Public interface\n\n  var createHref = function createHref(location) {\n    return '#' + encodePath(basename + createPath(location));\n  };\n\n  var push = function push(path, state) {\n    browser_default()(state === undefined, 'Hash history cannot push state; it is ignored');\n\n    var action = 'PUSH';\n    var location = LocationUtils_createLocation(path, undefined, undefined, history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var path = createPath(location);\n      var encodedPath = encodePath(basename + path);\n      var hashChanged = getHashPath() !== encodedPath;\n\n      if (hashChanged) {\n        // We cannot tell if a hashchange was caused by a PUSH, so we'd\n        // rather setState here and ignore the hashchange. The caveat here\n        // is that other hash histories in the page will consider it a POP.\n        ignorePath = path;\n        pushHashPath(encodedPath);\n\n        var prevIndex = allPaths.lastIndexOf(createPath(history.location));\n        var nextPaths = allPaths.slice(0, prevIndex === -1 ? 0 : prevIndex + 1);\n\n        nextPaths.push(path);\n        allPaths = nextPaths;\n\n        setState({ action: action, location: location });\n      } else {\n        browser_default()(false, 'Hash history cannot PUSH the same path; a new entry will not be added to the history stack');\n\n        setState();\n      }\n    });\n  };\n\n  var replace = function replace(path, state) {\n    browser_default()(state === undefined, 'Hash history cannot replace state; it is ignored');\n\n    var action = 'REPLACE';\n    var location = LocationUtils_createLocation(path, undefined, undefined, history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var path = createPath(location);\n      var encodedPath = encodePath(basename + path);\n      var hashChanged = getHashPath() !== encodedPath;\n\n      if (hashChanged) {\n        // We cannot tell if a hashchange was caused by a REPLACE, so we'd\n        // rather setState here and ignore the hashchange. The caveat here\n        // is that other hash histories in the page will consider it a POP.\n        ignorePath = path;\n        replaceHashPath(encodedPath);\n      }\n\n      var prevIndex = allPaths.indexOf(createPath(history.location));\n\n      if (prevIndex !== -1) allPaths[prevIndex] = path;\n\n      setState({ action: action, location: location });\n    });\n  };\n\n  var go = function go(n) {\n    browser_default()(canGoWithoutReload, 'Hash history go(n) causes a full page reload in this browser');\n\n    globalHistory.go(n);\n  };\n\n  var goBack = function goBack() {\n    return go(-1);\n  };\n\n  var goForward = function goForward() {\n    return go(1);\n  };\n\n  var listenerCount = 0;\n\n  var checkDOMListeners = function checkDOMListeners(delta) {\n    listenerCount += delta;\n\n    if (listenerCount === 1) {\n      addEventListener(window, createHashHistory_HashChangeEvent, handleHashChange);\n    } else if (listenerCount === 0) {\n      removeEventListener(window, createHashHistory_HashChangeEvent, handleHashChange);\n    }\n  };\n\n  var isBlocked = false;\n\n  var block = function block() {\n    var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n\n    var unblock = transitionManager.setPrompt(prompt);\n\n    if (!isBlocked) {\n      checkDOMListeners(1);\n      isBlocked = true;\n    }\n\n    return function () {\n      if (isBlocked) {\n        isBlocked = false;\n        checkDOMListeners(-1);\n      }\n\n      return unblock();\n    };\n  };\n\n  var listen = function listen(listener) {\n    var unlisten = transitionManager.appendListener(listener);\n    checkDOMListeners(1);\n\n    return function () {\n      checkDOMListeners(-1);\n      unlisten();\n    };\n  };\n\n  var history = {\n    length: globalHistory.length,\n    action: 'POP',\n    location: initialLocation,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    block: block,\n    listen: listen\n  };\n\n  return history;\n};\n\n/* harmony default export */ var es_createHashHistory = (createHashHistory_createHashHistory);\n// CONCATENATED MODULE: ../node_modules/history/es/createMemoryHistory.js\nvar createMemoryHistory__typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n  return typeof obj;\n} : function (obj) {\n  return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\n\nvar createMemoryHistory__extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }return target;\n};\n\n\n\n\n\n\nvar clamp = function clamp(n, lowerBound, upperBound) {\n  return Math.min(Math.max(n, lowerBound), upperBound);\n};\n\n/**\n * Creates a history object that stores locations in memory.\n */\nvar createMemoryHistory_createMemoryHistory = function createMemoryHistory() {\n  var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  var getUserConfirmation = props.getUserConfirmation,\n      _props$initialEntries = props.initialEntries,\n      initialEntries = _props$initialEntries === undefined ? ['/'] : _props$initialEntries,\n      _props$initialIndex = props.initialIndex,\n      initialIndex = _props$initialIndex === undefined ? 0 : _props$initialIndex,\n      _props$keyLength = props.keyLength,\n      keyLength = _props$keyLength === undefined ? 6 : _props$keyLength;\n\n  var transitionManager = es_createTransitionManager();\n\n  var setState = function setState(nextState) {\n    createMemoryHistory__extends(history, nextState);\n\n    history.length = history.entries.length;\n\n    transitionManager.notifyListeners(history.location, history.action);\n  };\n\n  var createKey = function createKey() {\n    return Math.random().toString(36).substr(2, keyLength);\n  };\n\n  var index = clamp(initialIndex, 0, initialEntries.length - 1);\n  var entries = initialEntries.map(function (entry) {\n    return typeof entry === 'string' ? LocationUtils_createLocation(entry, undefined, createKey()) : LocationUtils_createLocation(entry, undefined, entry.key || createKey());\n  });\n\n  // Public interface\n\n  var createHref = createPath;\n\n  var push = function push(path, state) {\n    browser_default()(!((typeof path === 'undefined' ? 'undefined' : createMemoryHistory__typeof(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored');\n\n    var action = 'PUSH';\n    var location = LocationUtils_createLocation(path, state, createKey(), history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var prevIndex = history.index;\n      var nextIndex = prevIndex + 1;\n\n      var nextEntries = history.entries.slice(0);\n      if (nextEntries.length > nextIndex) {\n        nextEntries.splice(nextIndex, nextEntries.length - nextIndex, location);\n      } else {\n        nextEntries.push(location);\n      }\n\n      setState({\n        action: action,\n        location: location,\n        index: nextIndex,\n        entries: nextEntries\n      });\n    });\n  };\n\n  var replace = function replace(path, state) {\n    browser_default()(!((typeof path === 'undefined' ? 'undefined' : createMemoryHistory__typeof(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to replace when the 1st ' + 'argument is a location-like object that already has state; it is ignored');\n\n    var action = 'REPLACE';\n    var location = LocationUtils_createLocation(path, state, createKey(), history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      history.entries[history.index] = location;\n\n      setState({ action: action, location: location });\n    });\n  };\n\n  var go = function go(n) {\n    var nextIndex = clamp(history.index + n, 0, history.entries.length - 1);\n\n    var action = 'POP';\n    var location = history.entries[nextIndex];\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (ok) {\n        setState({\n          action: action,\n          location: location,\n          index: nextIndex\n        });\n      } else {\n        // Mimic the behavior of DOM histories by\n        // causing a render after a cancelled POP.\n        setState();\n      }\n    });\n  };\n\n  var goBack = function goBack() {\n    return go(-1);\n  };\n\n  var goForward = function goForward() {\n    return go(1);\n  };\n\n  var canGo = function canGo(n) {\n    var nextIndex = history.index + n;\n    return nextIndex >= 0 && nextIndex < history.entries.length;\n  };\n\n  var block = function block() {\n    var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n    return transitionManager.setPrompt(prompt);\n  };\n\n  var listen = function listen(listener) {\n    return transitionManager.appendListener(listener);\n  };\n\n  var history = {\n    length: entries.length,\n    action: 'POP',\n    location: entries[index],\n    index: index,\n    entries: entries,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    canGo: canGo,\n    block: block,\n    listen: listen\n  };\n\n  return history;\n};\n\n/* harmony default export */ var es_createMemoryHistory = (createMemoryHistory_createMemoryHistory);\n// CONCATENATED MODULE: ../node_modules/history/es/index.js\n\n\n\n\n\n\n\n\n\n// CONCATENATED MODULE: ./components/app.js\n\n\nfunction app__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction app__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction app__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n //redux\n //redux\n\n // attach listeners\n\n\n\nvar app_mapStateToProps = function mapStateToProps(state) {\n\treturn {\n\t\tauth_store: state.authentication,\n\t\troute_store: state.route,\n\t\tchannel_store: state.channel,\n\t\tchat_store: state.chatMessages\n\t};\n};\n\nvar app_mapDispatchToProps = function mapDispatchToProps(dispatch) {\n\treturn {\n\t\tsetAuthUser: function setAuthUser() {\n\t\t\tdispatch(setAuthUserAction());\n\t\t},\n\t\tsetRoute: function setRoute(route) {\n\t\t\tdispatch({ type: constants[\"p\" /* SET_ROUTE */], route: route });\n\t\t},\n\t\tsetChannel: function setChannel(channel) {\n\t\t\tif (!channel) {\n\t\t\t\tchannel = 'main';\n\t\t\t}\n\t\t\tdispatch({ type: constants[\"o\" /* SET_CHANNEL */], channel: channel });\n\t\t},\n\t\tattachListeners: function attachListeners() {\n\t\t\tObject(db[\"a\" /* attachMessageListeners */])(dispatch); //TBD probably need to dispatch these instead of passing a dispatch reference\n\t\t\tObject(db[\"b\" /* attachQuestionListeners */])(dispatch);\n\t\t}\n\t};\n};\n\nvar app__ref = Object(preact_min[\"h\"])('link', { rel: 'stylesheet', href: 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css', integrity: 'sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u', crossorigin: 'anonymous' });\n\nvar app__ref2 = Object(preact_min[\"h\"])('link', { rel: 'stylesheet', href: 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css', integrity: 'sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp', crossorigin: 'anonymous' });\n\nvar app__ref3 = Object(preact_min[\"h\"])(\n\t'header',\n\tnull,\n\tObject(preact_min[\"h\"])(header, null)\n);\n\nvar app__ref4 = Object(preact_min[\"h\"])(home, { path: '/' });\n\nvar app__ref5 = Object(preact_min[\"h\"])(profile, { path: '/profile/', user: 'me' });\n\nvar app__ref6 = Object(preact_min[\"h\"])(profile, { path: '/profile/:user' });\n\nvar _ref7 = Object(preact_min[\"h\"])(questions, { path: '/questions/' });\n\nvar _ref8 = Object(preact_min[\"h\"])(presentations, { path: '/presentations/' });\n\nvar _ref9 = Object(preact_min[\"h\"])(map, { path: '/map/' });\n\nvar _ref10 = Object(preact_min[\"h\"])(chat, { path: '/chat/' });\n\nvar _ref11 = Object(preact_min[\"h\"])(_04, { 'default': true });\n\nvar _ref12 = Object(preact_min[\"h\"])(\n\t'footer',\n\tnull,\n\tObject(preact_min[\"h\"])(nav, null)\n);\n\nvar app_App = function (_Component) {\n\tapp__inherits(App, _Component);\n\n\t/** Gets fired when the route changes.\n  *\t@param {Object} event\t\t\"change\" event from [preact-router](http://git.io/preact-router)\n  *\t@param {string} event.url\tThe newly routed URL\n  */\n\tfunction App(props) {\n\t\tapp__classCallCheck(this, App);\n\n\t\tvar _this = app__possibleConstructorReturn(this, _Component.call(this, props));\n\n\t\t_this.handleRoute = 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__webpack_require__(\"SpGf\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.Dialog = exports.DialogFooterButton = exports.DialogFooter = exports.DialogBody = exports.DialogHeader = void 0;\n\nvar _get2 = _interopRequireDefault(__webpack_require__(\"J5U+\"));\n\nvar _classCallCheck2 = _interopRequireDefault(__webpack_require__(\"0fcM\"));\n\nvar _createClass2 = _interopRequireDefault(__webpack_require__(\"P8NW\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(__webpack_require__(\"0421\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(__webpack_require__(\"UJE0\"));\n\nvar _inherits2 = _interopRequireDefault(__webpack_require__(\"d4H2\"));\n\nvar _typeof2 = _interopRequireDefault(__webpack_require__(\"b9XL\"));\n\nvar _dialog = __webpack_require__(\"5sRW\");\n\nvar _bindDecorator = __webpack_require__(\"gKs0\");\n\nvar _preact = __webpack_require__(\"KM04\");\n\nvar _MaterialComponent5 = _interopRequireDefault(__webpack_require__(\"uc5p\"));\n\nvar _Button2 = __webpack_require__(\"7/cg\");\n\nvar __decorate = void 0 && (void 0).__decorate || function (decorators, target, key, desc) {\n  var c = arguments.length,\n      r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc,\n      d;\n  if ((typeof Reflect === \"undefined\" ? \"undefined\" : (0, _typeof2.default)(Reflect)) === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);else for (var i = decorators.length - 1; i >= 0; i--) {\n    if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n  }\n  return c > 3 && r && Object.defineProperty(target, key, r), r;\n};\n\nvar DialogHeader =\n/*#__PURE__*/\nfunction (_MaterialComponent) {\n  (0, _inherits2.default)(DialogHeader, _MaterialComponent);\n\n  function DialogHeader() {\n    var _this;\n\n    (0, _classCallCheck2.default)(this, DialogHeader);\n    _this = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(DialogHeader).apply(this, arguments));\n    _this.componentName = 'dialog__header';\n    _this.mdcProps = [];\n    return _this;\n  }\n\n  (0, _createClass2.default)(DialogHeader, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"header\", _extends({}, props), (0, _preact.h)(\"h2\", {\n        className: \"mdc-dialog__header__title\"\n      }, props.children));\n    }\n  }]);\n  return DialogHeader;\n}(_MaterialComponent5.default);\n\nexports.DialogHeader = DialogHeader;\n\n__decorate([_bindDecorator.bind], DialogHeader.prototype, \"materialDom\", null);\n\nvar DialogBody =\n/*#__PURE__*/\nfunction (_MaterialComponent2) {\n  (0, _inherits2.default)(DialogBody, _MaterialComponent2);\n\n  function DialogBody() {\n    var _this2;\n\n    (0, _classCallCheck2.default)(this, DialogBody);\n    _this2 = (0, 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_createClass2.default)(DialogFooterButton, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"button\", _extends({}, props, {\n        className: \"mdc-button\",\n        ref: this.setControlRef\n      }), props.children);\n    }\n  }]);\n  return DialogFooterButton;\n}(_Button2.Button);\n\nexports.DialogFooterButton = DialogFooterButton;\n\n__decorate([_bindDecorator.bind], DialogFooterButton.prototype, \"materialDom\", null);\n\nvar Dialog =\n/*#__PURE__*/\nfunction (_MaterialComponent4) {\n  (0, _inherits2.default)(Dialog, _MaterialComponent4);\n\n  function Dialog() {\n    var _this5;\n\n    (0, _classCallCheck2.default)(this, Dialog);\n    _this5 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(Dialog).apply(this, arguments));\n    _this5.componentName = 'dialog';\n    _this5.mdcProps = [];\n    return _this5;\n  }\n\n  (0, _createClass2.default)(Dialog, [{\n    key: \"componentDidMount\",\n    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 key: \"onCancel\",\n    value: function onCancel(e) {\n      if (this.props.onCancel) {\n        this.props.onCancel(e);\n      }\n    }\n  }, {\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"aside\", _extends({\n        role: 'alertdialog',\n        ref: this.setControlRef\n      }, props), (0, _preact.h)(\"div\", {\n        className: \"mdc-dialog__surface\"\n      }, props.children), (0, _preact.h)(\"div\", {\n        className: \"mdc-dialog__backdrop\"\n      }));\n    }\n  }]);\n  return Dialog;\n}(_MaterialComponent5.default);\n\nexports.Dialog = Dialog;\n\n__decorate([_bindDecorator.bind], Dialog.prototype, \"onAccept\", null);\n\n__decorate([_bindDecorator.bind], Dialog.prototype, \"onCancel\", null);\n\nvar default_1 =\n/*#__PURE__*/\nfunction (_Dialog) {\n  (0, _inherits2.default)(default_1, _Dialog);\n\n  function default_1() {\n    (0, _classCallCheck2.default)(this, default_1);\n    return (0, 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IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/* eslint no-unused-vars: [2, {\"args\": \"none\"}] */\n\n/**\n * Adapter for MDC Top App Bar\n *\n * Defines the shape of the adapter expected by the foundation. Implement this\n * adapter to integrate the Top App Bar into your framework. See\n * https://github.com/material-components/material-components-web/blob/master/docs/authoring-components.md\n * for more information.\n *\n * @record\n */\nvar MDCTopAppBarAdapter = function () {\n  function MDCTopAppBarAdapter() {\n    _classCallCheck(this, MDCTopAppBarAdapter);\n  }\n\n  /**\n   * Adds a class to the root Element.\n   * @param {string} className\n   */\n  MDCTopAppBarAdapter.prototype.addClass = function addClass(className) {};\n\n  /**\n   * Removes a class from the root Element.\n   * @param {string} className\n   */\n\n\n  MDCTopAppBarAdapter.prototype.removeClass = function removeClass(className) {};\n\n  /**\n   * Returns true if the root Element contains the given class.\n   * @param {string} className\n   * @return {boolean}\n   */\n\n\n  MDCTopAppBarAdapter.prototype.hasClass = function hasClass(className) {};\n\n  /**\n   * Sets the specified inline style property on the root Element to the given value.\n   * @param {string} property\n   * @param {string} value\n   */\n\n\n  MDCTopAppBarAdapter.prototype.setStyle = function setStyle(property, value) {};\n\n  /**\n   * Gets the height of the top app bar.\n   * @return {number}\n   */\n\n\n  MDCTopAppBarAdapter.prototype.getTopAppBarHeight = function getTopAppBarHeight() {};\n\n  /**\n   * Registers an event handler on the navigation icon element for a given event.\n   * @param {string} type\n   * @param {function(!Event): undefined} handler\n   */\n\n\n  MDCTopAppBarAdapter.prototype.registerNavigationIconInteractionHandler = function registerNavigationIconInteractionHandler(type, handler) {};\n\n  /**\n   * Deregisters an event handler on the navigation icon element for a given event.\n   * @param {string} type\n   * @param {function(!Event): undefined} handler\n   */\n\n\n  MDCTopAppBarAdapter.prototype.deregisterNavigationIconInteractionHandler = function deregisterNavigationIconInteractionHandler(type, handler) {};\n\n  /**\n   * Emits an event when the navigation icon is clicked.\n   */\n\n\n  MDCTopAppBarAdapter.prototype.notifyNavigationIconClicked = function notifyNavigationIconClicked() {};\n\n  /** @param {function(!Event)} handler */\n\n\n  MDCTopAppBarAdapter.prototype.registerScrollHandler = function registerScrollHandler(handler) {};\n\n  /** @param {function(!Event)} handler */\n\n\n  MDCTopAppBarAdapter.prototype.deregisterScrollHandler = function deregisterScrollHandler(handler) {};\n\n  /** @param {function(!Event)} handler */\n\n\n  MDCTopAppBarAdapter.prototype.registerResizeHandler = function registerResizeHandler(handler) {};\n\n  /** @param {function(!Event)} handler */\n\n\n  MDCTopAppBarAdapter.prototype.deregisterResizeHandler = function deregisterResizeHandler(handler) {};\n\n  /** @return {number} */\n\n\n  MDCTopAppBarAdapter.prototype.getViewportScrollY = function getViewportScrollY() {};\n\n  /** @return {number} */\n\n\n  MDCTopAppBarAdapter.prototype.getTotalActionItems = function getTotalActionItems() {};\n\n  return MDCTopAppBarAdapter;\n}();\n\n/* harmony default export */ var top_app_bar_adapter = (MDCTopAppBarAdapter);\n// EXTERNAL MODULE: ../node_modules/@material/base/component.js\nvar component = __webpack_require__(\"EQDb\");\n\n// EXTERNAL MODULE: ../node_modules/@material/ripple/index.js + 3 modules\nvar ripple = __webpack_require__(\"vkNc\");\n\n// CONCATENATED MODULE: ../node_modules/@material/top-app-bar/constants.js\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** @enum {string} */\nvar cssClasses = {\n  FIXED_CLASS: 'mdc-top-app-bar--fixed',\n  FIXED_SCROLLED_CLASS: 'mdc-top-app-bar--fixed-scrolled',\n  SHORT_CLASS: 'mdc-top-app-bar--short',\n  SHORT_HAS_ACTION_ITEM_CLASS: 'mdc-top-app-bar--short-has-action-item',\n  SHORT_COLLAPSED_CLASS: 'mdc-top-app-bar--short-collapsed'\n};\n\n/** @enum {number} */\nvar numbers = {\n  DEBOUNCE_THROTTLE_RESIZE_TIME_MS: 100,\n  MAX_TOP_APP_BAR_HEIGHT: 128\n};\n\n/** @enum {string} */\nvar strings = {\n  ACTION_ITEM_SELECTOR: '.mdc-top-app-bar__action-item',\n  NAVIGATION_EVENT: 'MDCTopAppBar:nav',\n  NAVIGATION_ICON_SELECTOR: '.mdc-top-app-bar__navigation-icon',\n  ROOT_SELECTOR: '.mdc-top-app-bar',\n  TITLE_SELECTOR: '.mdc-top-app-bar__title'\n};\n\n\n// EXTERNAL MODULE: ../node_modules/@material/base/foundation.js\nvar base_foundation = __webpack_require__(\"uJAj\");\n\n// CONCATENATED MODULE: ../node_modules/@material/top-app-bar/foundation.js\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction foundation__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n/**\n * @extends {MDCFoundation<!MDCTopAppBarAdapter>}\n */\n\nvar foundation_MDCTopAppBarBaseFoundation = function (_MDCFoundation) {\n  _inherits(MDCTopAppBarBaseFoundation, _MDCFoundation);\n\n  _createClass(MDCTopAppBarBaseFoundation, null, [{\n    key: 'strings',\n\n    /** @return enum {string} */\n    get: function get() {\n      return strings;\n    }\n\n    /** @return enum {string} */\n\n  }, {\n    key: 'cssClasses',\n    get: function get() {\n      return cssClasses;\n    }\n\n    /** @return enum {number} */\n\n  }, {\n    key: 'numbers',\n    get: function get() {\n      return numbers;\n    }\n\n    /**\n     * {@see MDCTopAppBarAdapter} for typing information on parameters and return\n     * types.\n     * @return {!MDCTopAppBarAdapter}\n     */\n\n  }, {\n    key: 'defaultAdapter',\n    get: function get() {\n      return (/** @type {!MDCTopAppBarAdapter} */{\n          hasClass: function hasClass() /* className: string */{},\n          addClass: function addClass() /* className: string */{},\n          removeClass: function removeClass() /* className: string */{},\n          setStyle: function setStyle() /* property: string, value: string */{},\n          getTopAppBarHeight: function getTopAppBarHeight() {},\n          registerNavigationIconInteractionHandler: function registerNavigationIconInteractionHandler() /* type: string, handler: EventListener */{},\n          deregisterNavigationIconInteractionHandler: function deregisterNavigationIconInteractionHandler() /* type: string, handler: EventListener */{},\n          notifyNavigationIconClicked: function notifyNavigationIconClicked() {},\n          registerScrollHandler: function registerScrollHandler() /* handler: EventListener */{},\n          deregisterScrollHandler: function deregisterScrollHandler() /* handler: EventListener */{},\n          registerResizeHandler: function registerResizeHandler() /* handler: EventListener */{},\n          deregisterResizeHandler: function deregisterResizeHandler() /* handler: EventListener */{},\n          getViewportScrollY: function getViewportScrollY() {\n            return (/* number */0\n            );\n          },\n          getTotalActionItems: function getTotalActionItems() {\n            return (/* number */0\n            );\n          }\n        }\n      );\n    }\n\n    /**\n     * @param {!MDCTopAppBarAdapter} adapter\n     */\n\n  }]);\n\n  function MDCTopAppBarBaseFoundation( /** @type {!MDCTopAppBarAdapter} */adapter) {\n    foundation__classCallCheck(this, MDCTopAppBarBaseFoundation);\n\n    var _this = _possibleConstructorReturn(this, _MDCFoundation.call(this, _extends(MDCTopAppBarBaseFoundation.defaultAdapter, adapter)));\n\n    _this.navClickHandler_ = function () {\n      return _this.adapter_.notifyNavigationIconClicked();\n    };\n\n    _this.scrollHandler_ = function () {};\n    return _this;\n  }\n\n  MDCTopAppBarBaseFoundation.prototype.init = function init() {\n    this.adapter_.registerNavigationIconInteractionHandler('click', this.navClickHandler_);\n  };\n\n  MDCTopAppBarBaseFoundation.prototype.destroy = function destroy() {\n    this.adapter_.deregisterNavigationIconInteractionHandler('click', this.navClickHandler_);\n  };\n\n  MDCTopAppBarBaseFoundation.prototype.initScrollHandler = function initScrollHandler() {\n    this.adapter_.registerScrollHandler(this.scrollHandler_);\n  };\n\n  MDCTopAppBarBaseFoundation.prototype.destroyScrollHandler = function destroyScrollHandler() {\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n  };\n\n  return MDCTopAppBarBaseFoundation;\n}(base_foundation[\"a\" /* default */]);\n\n/* harmony default export */ var top_app_bar_foundation = (foundation_MDCTopAppBarBaseFoundation);\n// CONCATENATED MODULE: ../node_modules/@material/top-app-bar/fixed/foundation.js\nfunction fixed_foundation__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction foundation__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction foundation__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n/**\n * @extends {MDCTopAppBarFoundation<!MDCFixedTopAppBarFoundation>}\n * @final\n */\n\nvar foundation_MDCFixedTopAppBarFoundation = function (_MDCTopAppBarFoundati) {\n  foundation__inherits(MDCFixedTopAppBarFoundation, _MDCTopAppBarFoundati);\n\n  /**\n   * @param {!MDCTopAppBarAdapter} adapter\n   */\n  function MDCFixedTopAppBarFoundation(adapter) {\n    fixed_foundation__classCallCheck(this, MDCFixedTopAppBarFoundation);\n\n    /** State variable for the previous scroll iteration top app bar state */\n    var _this = foundation__possibleConstructorReturn(this, _MDCTopAppBarFoundati.call(this, adapter));\n\n    _this.wasScrolled_ = false;\n\n    _this.scrollHandler_ = function () {\n      return _this.fixedScrollHandler_();\n    };\n    return _this;\n  }\n\n  MDCFixedTopAppBarFoundation.prototype.init = function init() {\n    _MDCTopAppBarFoundati.prototype.init.call(this);\n    this.adapter_.registerScrollHandler(this.scrollHandler_);\n  };\n\n  MDCFixedTopAppBarFoundation.prototype.destroy = function destroy() {\n    _MDCTopAppBarFoundati.prototype.destroy.call(this);\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n  };\n\n  /**\n   * Scroll handler for applying/removing the modifier class\n   * on the fixed top app bar.\n   */\n\n\n  MDCFixedTopAppBarFoundation.prototype.fixedScrollHandler_ = function fixedScrollHandler_() {\n    var currentScroll = this.adapter_.getViewportScrollY();\n\n    if (currentScroll <= 0) {\n      if (this.wasScrolled_) {\n        this.adapter_.removeClass(cssClasses.FIXED_SCROLLED_CLASS);\n        this.wasScrolled_ = false;\n      }\n    } else {\n      if (!this.wasScrolled_) {\n        this.adapter_.addClass(cssClasses.FIXED_SCROLLED_CLASS);\n        this.wasScrolled_ = true;\n      }\n    }\n  };\n\n  return MDCFixedTopAppBarFoundation;\n}(top_app_bar_foundation);\n\n/* harmony default export */ var fixed_foundation = (foundation_MDCFixedTopAppBarFoundation);\n// CONCATENATED MODULE: ../node_modules/@material/top-app-bar/short/foundation.js\nfunction short_foundation__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction short_foundation__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction short_foundation__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n/**\n * @extends {MDCTopAppBarBaseFoundation<!MDCShortTopAppBarFoundation>}\n * @final\n */\n\nvar foundation_MDCShortTopAppBarFoundation = function (_MDCTopAppBarBaseFoun) {\n  short_foundation__inherits(MDCShortTopAppBarFoundation, _MDCTopAppBarBaseFoun);\n\n  /**\n   * @param {!MDCTopAppBarAdapter} adapter\n   */\n  function MDCShortTopAppBarFoundation(adapter) {\n    short_foundation__classCallCheck(this, MDCShortTopAppBarFoundation);\n\n    // State variable for the current top app bar state\n    var _this = short_foundation__possibleConstructorReturn(this, _MDCTopAppBarBaseFoun.call(this, adapter));\n\n    _this.isCollapsed = false;\n\n    _this.scrollHandler_ = function () {\n      return _this.shortAppBarScrollHandler_();\n    };\n    return _this;\n  }\n\n  MDCShortTopAppBarFoundation.prototype.init = function init() {\n    _MDCTopAppBarBaseFoun.prototype.init.call(this);\n    var isAlwaysCollapsed = this.adapter_.hasClass(cssClasses.SHORT_COLLAPSED_CLASS);\n\n    if (this.adapter_.getTotalActionItems() > 0) {\n      this.adapter_.addClass(cssClasses.SHORT_HAS_ACTION_ITEM_CLASS);\n    }\n\n    if (!isAlwaysCollapsed) {\n      this.adapter_.registerScrollHandler(this.scrollHandler_);\n      this.shortAppBarScrollHandler_();\n    }\n  };\n\n  MDCShortTopAppBarFoundation.prototype.destroy = function destroy() {\n    _MDCTopAppBarBaseFoun.prototype.destroy.call(this);\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n  };\n\n  /**\n   * Scroll handler for applying/removing the collapsed modifier class\n   * on the short top app bar.\n   * @private\n   */\n\n\n  MDCShortTopAppBarFoundation.prototype.shortAppBarScrollHandler_ = function shortAppBarScrollHandler_() {\n    var currentScroll = this.adapter_.getViewportScrollY();\n\n    if (currentScroll <= 0) {\n      if (this.isCollapsed) {\n        this.adapter_.removeClass(cssClasses.SHORT_COLLAPSED_CLASS);\n        this.isCollapsed = false;\n      }\n    } else {\n      if (!this.isCollapsed) {\n        this.adapter_.addClass(cssClasses.SHORT_COLLAPSED_CLASS);\n        this.isCollapsed = true;\n      }\n    }\n  };\n\n  return MDCShortTopAppBarFoundation;\n}(top_app_bar_foundation);\n\n/* harmony default export */ var short_foundation = (foundation_MDCShortTopAppBarFoundation);\n// CONCATENATED MODULE: ../node_modules/@material/top-app-bar/standard/foundation.js\nfunction standard_foundation__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction standard_foundation__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction standard_foundation__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\nvar INITIAL_VALUE = 0;\n/**\n * @extends {MDCTopAppBarBaseFoundation<!MDCTopAppBarFoundation>}\n * @final\n */\n\nvar foundation_MDCTopAppBarFoundation = function (_MDCTopAppBarBaseFoun) {\n  standard_foundation__inherits(MDCTopAppBarFoundation, _MDCTopAppBarBaseFoun);\n\n  /**\n   * @param {!MDCTopAppBarAdapter} adapter\n   */\n  function MDCTopAppBarFoundation(adapter) {\n    standard_foundation__classCallCheck(this, MDCTopAppBarFoundation);\n\n    /**\n     * Used for diffs of current scroll position vs previous scroll position\n     * @private {number}\n     */\n    var _this = standard_foundation__possibleConstructorReturn(this, _MDCTopAppBarBaseFoun.call(this, adapter));\n\n    _this.lastScrollPosition_ = _this.adapter_.getViewportScrollY();\n\n    /**\n     * Used to verify when the top app bar is completely showing or completely hidden\n     * @private {number}\n     */\n    _this.topAppBarHeight_ = _this.adapter_.getTopAppBarHeight();\n\n    /**\n     * wasDocked_ is used to indicate if the top app bar was docked in the previous\n     * scroll handler iteration.\n     * @private {boolean}\n     */\n    _this.wasDocked_ = true;\n\n    /**\n     * isDockedShowing_ is used to indicate if the top app bar is docked in the fully\n     * shown position.\n     * @private {boolean}\n     */\n    _this.isDockedShowing_ = true;\n\n    /**\n     * Variable for current scroll position of the top app bar\n     * @private {number}\n     */\n    _this.currentAppBarOffsetTop_ = 0;\n\n    /**\n     * Used to prevent the top app bar from being scrolled out of view during resize events\n     * @private {boolean} */\n    _this.isCurrentlyBeingResized_ = false;\n\n    /**\n     * The timeout that's used to throttle the resize events\n     * @private {number}\n     */\n    _this.resizeThrottleId_ = INITIAL_VALUE;\n\n    /**\n     * The timeout that's used to debounce toggling the isCurrentlyBeingResized_ variable after a resize\n     * @private {number}\n     */\n    _this.resizeDebounceId_ = INITIAL_VALUE;\n\n    _this.scrollHandler_ = function () {\n      return _this.topAppBarScrollHandler_();\n    };\n    _this.resizeHandler_ = function () {\n      return _this.topAppBarResizeHandler_();\n    };\n    return _this;\n  }\n\n  MDCTopAppBarFoundation.prototype.init = function init() {\n    _MDCTopAppBarBaseFoun.prototype.init.call(this);\n    this.adapter_.registerScrollHandler(this.scrollHandler_);\n    this.adapter_.registerResizeHandler(this.resizeHandler_);\n  };\n\n  MDCTopAppBarFoundation.prototype.destroy = function destroy() {\n    _MDCTopAppBarBaseFoun.prototype.destroy.call(this);\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n    this.adapter_.deregisterResizeHandler(this.resizeHandler_);\n    this.adapter_.setStyle('top', '');\n  };\n\n  /**\n   * Function to determine if the DOM needs to update.\n   * @return {boolean}\n   * @private\n   */\n\n\n  MDCTopAppBarFoundation.prototype.checkForUpdate_ = function checkForUpdate_() {\n    var offscreenBoundaryTop = -this.topAppBarHeight_;\n    var hasAnyPixelsOffscreen = this.currentAppBarOffsetTop_ < 0;\n    var hasAnyPixelsOnscreen = this.currentAppBarOffsetTop_ > offscreenBoundaryTop;\n    var partiallyShowing = hasAnyPixelsOffscreen && hasAnyPixelsOnscreen;\n\n    // If it's partially showing, it can't be docked.\n    if (partiallyShowing) {\n      this.wasDocked_ = false;\n    } else {\n      // Not previously docked and not partially showing, it's now docked.\n      if (!this.wasDocked_) {\n        this.wasDocked_ = true;\n        return true;\n      } else if (this.isDockedShowing_ !== hasAnyPixelsOnscreen) {\n        this.isDockedShowing_ = hasAnyPixelsOnscreen;\n        return true;\n      }\n    }\n\n    return partiallyShowing;\n  };\n\n  /**\n   * Function to move the top app bar if needed.\n   * @private\n   */\n\n\n  MDCTopAppBarFoundation.prototype.moveTopAppBar_ = function moveTopAppBar_() {\n    if (this.checkForUpdate_()) {\n      // Once the top app bar is fully hidden we use the max potential top app bar height as our offset\n      // so the top app bar doesn't show if the window resizes and the new height > the old height.\n      var offset = this.currentAppBarOffsetTop_;\n      if (Math.abs(offset) >= this.topAppBarHeight_) {\n        offset = -numbers.MAX_TOP_APP_BAR_HEIGHT;\n      }\n\n      this.adapter_.setStyle('top', offset + 'px');\n    }\n  };\n\n  /**\n   * Scroll handler for the default scroll behavior of the top app bar.\n   * @private\n   */\n\n\n  MDCTopAppBarFoundation.prototype.topAppBarScrollHandler_ = function topAppBarScrollHandler_() {\n    var currentScrollPosition = Math.max(this.adapter_.getViewportScrollY(), 0);\n    var diff = currentScrollPosition - this.lastScrollPosition_;\n    this.lastScrollPosition_ = currentScrollPosition;\n\n    // If the window is being resized the lastScrollPosition_ needs to be updated but the\n    // current scroll of the top app bar should stay in the same position.\n    if (!this.isCurrentlyBeingResized_) {\n      this.currentAppBarOffsetTop_ -= diff;\n\n      if (this.currentAppBarOffsetTop_ > 0) {\n        this.currentAppBarOffsetTop_ = 0;\n      } else if (Math.abs(this.currentAppBarOffsetTop_) > this.topAppBarHeight_) {\n        this.currentAppBarOffsetTop_ = -this.topAppBarHeight_;\n      }\n\n      this.moveTopAppBar_();\n    }\n  };\n\n  /**\n   * Top app bar resize handler that throttle/debounce functions that execute updates.\n   * @private\n   */\n\n\n  MDCTopAppBarFoundation.prototype.topAppBarResizeHandler_ = function topAppBarResizeHandler_() {\n    var _this2 = this;\n\n    // Throttle resize events 10 p/s\n    if (!this.resizeThrottleId_) {\n      this.resizeThrottleId_ = setTimeout(function () {\n        _this2.resizeThrottleId_ = INITIAL_VALUE;\n        _this2.throttledResizeHandler_();\n      }, numbers.DEBOUNCE_THROTTLE_RESIZE_TIME_MS);\n    }\n\n    this.isCurrentlyBeingResized_ = true;\n\n    if (this.resizeDebounceId_) {\n      clearTimeout(this.resizeDebounceId_);\n    }\n\n    this.resizeDebounceId_ = setTimeout(function () {\n      _this2.topAppBarScrollHandler_();\n      _this2.isCurrentlyBeingResized_ = false;\n      _this2.resizeDebounceId_ = INITIAL_VALUE;\n    }, numbers.DEBOUNCE_THROTTLE_RESIZE_TIME_MS);\n  };\n\n  /**\n   * Throttled function that updates the top app bar scrolled values if the\n   * top app bar height changes.\n   * @private\n   */\n\n\n  MDCTopAppBarFoundation.prototype.throttledResizeHandler_ = function throttledResizeHandler_() {\n    var currentHeight = this.adapter_.getTopAppBarHeight();\n    if (this.topAppBarHeight_ !== currentHeight) {\n      this.wasDocked_ = false;\n\n      // Since the top app bar has a different height depending on the screen width, this\n      // will ensure that the top app bar remains in the correct location if\n      // completely hidden and a resize makes the top app bar a different height.\n      this.currentAppBarOffsetTop_ -= this.topAppBarHeight_ - currentHeight;\n      this.topAppBarHeight_ = currentHeight;\n    }\n    this.topAppBarScrollHandler_();\n  };\n\n  return MDCTopAppBarFoundation;\n}(top_app_bar_foundation);\n\n/* harmony default export */ var standard_foundation = (foundation_MDCTopAppBarFoundation);\n// CONCATENATED MODULE: ../node_modules/@material/top-app-bar/index.js\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"MDCTopAppBar\", function() { return top_app_bar_MDCTopAppBar; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"MDCTopAppBarBaseFoundation\", function() { return top_app_bar_foundation; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"MDCTopAppBarFoundation\", function() { return standard_foundation; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"MDCFixedTopAppBarFoundation\", function() { return fixed_foundation; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"MDCShortTopAppBarFoundation\", function() { return short_foundation; });\nvar top_app_bar__extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nfunction top_app_bar__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction top_app_bar__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction top_app_bar__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n\n\n\n\n\n/**\n * @extends {MDCComponent<!MDCTopAppBarBaseFoundation>}\n * @final\n */\n\nvar top_app_bar_MDCTopAppBar = function (_MDCComponent) {\n  top_app_bar__inherits(MDCTopAppBar, _MDCComponent);\n\n  /**\n   * @param {...?} args\n   */\n  function MDCTopAppBar() {\n    top_app_bar__classCallCheck(this, MDCTopAppBar);\n\n    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    /** @private {?Element} */\n    var _this = top_app_bar__possibleConstructorReturn(this, _MDCComponent.call.apply(_MDCComponent, [this].concat(args)));\n\n    _this.navIcon_;\n    /** @type {?Array<MDCRipple>} */\n    _this.iconRipples_;\n    /** @type {Object} */\n    _this.scrollTarget_;\n    return _this;\n  }\n\n  MDCTopAppBar.prototype.initialize = function initialize() {\n    var rippleFactory = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : function (el) {\n      return ripple[\"MDCRipple\"].attachTo(el);\n    };\n\n    this.navIcon_ = this.root_.querySelector(strings.NAVIGATION_ICON_SELECTOR);\n\n    // Get all icons in the toolbar and instantiate the ripples\n    var icons = [].slice.call(this.root_.querySelectorAll(strings.ACTION_ITEM_SELECTOR));\n    if (this.navIcon_) {\n      icons.push(this.navIcon_);\n    }\n\n    this.iconRipples_ = icons.map(function (icon) {\n      var ripple = rippleFactory(icon);\n      ripple.unbounded = true;\n      return ripple;\n    });\n  };\n\n  MDCTopAppBar.prototype.destroy = function destroy() {\n    this.iconRipples_.forEach(function (iconRipple) {\n      return iconRipple.destroy();\n    });\n    _MDCComponent.prototype.destroy.call(this);\n  };\n\n  MDCTopAppBar.prototype.setScrollTarget = function setScrollTarget(target) {\n    this.foundation_.destroyScrollHandler();\n    this.scrollTarget_ = target;\n    this.foundation_.initScrollHandler();\n  };\n\n  /**\n   * @param {!Element} root\n   * @return {!MDCTopAppBar}\n   */\n\n\n  MDCTopAppBar.attachTo = function attachTo(root) {\n    return new MDCTopAppBar(root);\n  };\n\n  /**\n   * @return {!MDCTopAppBarBaseFoundation}\n   */\n\n\n  MDCTopAppBar.prototype.getDefaultFoundation = function getDefaultFoundation() {\n    var _this2 = this;\n\n    /** @type {!MDCTopAppBarAdapter} */\n    var adapter = /** @type {!MDCTopAppBarAdapter} */top_app_bar__extends({\n      hasClass: function hasClass(className) {\n        return _this2.root_.classList.contains(className);\n      },\n      addClass: function addClass(className) {\n        return _this2.root_.classList.add(className);\n      },\n      removeClass: function removeClass(className) {\n        return _this2.root_.classList.remove(className);\n      },\n      setStyle: function setStyle(property, value) {\n        return _this2.root_.style.setProperty(property, value);\n      },\n      getTopAppBarHeight: function getTopAppBarHeight() {\n        return _this2.root_.clientHeight;\n      },\n      registerNavigationIconInteractionHandler: function registerNavigationIconInteractionHandler(evtType, handler) {\n        if (_this2.navIcon_) {\n          _this2.navIcon_.addEventListener(evtType, handler);\n        }\n      },\n      deregisterNavigationIconInteractionHandler: function deregisterNavigationIconInteractionHandler(evtType, handler) {\n        if (_this2.navIcon_) {\n          _this2.navIcon_.removeEventListener(evtType, handler);\n        }\n      },\n      notifyNavigationIconClicked: function notifyNavigationIconClicked() {\n        _this2.emit(strings.NAVIGATION_EVENT, {});\n      },\n      registerScrollHandler: function registerScrollHandler(handler) {\n        return _this2.scrollTarget_.addEventListener('scroll', handler);\n      },\n      deregisterScrollHandler: function deregisterScrollHandler(handler) {\n        return _this2.scrollTarget_.removeEventListener('scroll', handler);\n      },\n      registerResizeHandler: function registerResizeHandler(handler) {\n        return window.addEventListener('resize', handler);\n      },\n      deregisterResizeHandler: function deregisterResizeHandler(handler) {\n        return window.removeEventListener('resize', handler);\n      },\n      getViewportScrollY: function getViewportScrollY() {\n        return _this2.scrollTarget_[_this2.scrollTarget_ === window ? 'pageYOffset' : 'scrollTop'];\n      },\n      getTotalActionItems: function getTotalActionItems() {\n        return _this2.root_.querySelectorAll(strings.ACTION_ITEM_SELECTOR).length;\n      }\n    });\n\n    this.scrollTarget_ = window;\n\n    /** @type {!MDCTopAppBarBaseFoundation} */\n    var foundation = void 0;\n    if (this.root_.classList.contains(cssClasses.SHORT_CLASS)) {\n      foundation = new short_foundation(adapter);\n    } else if (this.root_.classList.contains(cssClasses.FIXED_CLASS)) {\n      foundation = new fixed_foundation(adapter);\n    } else {\n      foundation = new standard_foundation(adapter);\n    }\n\n    return foundation;\n  };\n\n  return MDCTopAppBar;\n}(component[\"a\" /* default */]);\n\n\n\n/***/ }),\n\n/***/ \"Nsnf\":\n/***/ (function(module, exports) {\n\nmodule.exports = function (done, value) {\n  return { value: value, done: !!done };\n};\n\n/***/ }),\n\n/***/ \"Nwxm\":\n/***/ (function(module, exports) {\n\nexports.f = {}.propertyIsEnumerable;\n\n/***/ }),\n\n/***/ \"OWuH\":\n/***/ (function(module, exports) {\n\nmodule.exports = function (bitmap, value) {\n  return {\n    enumerable: !(bitmap & 1),\n    configurable: !(bitmap & 2),\n    writable: !(bitmap & 4),\n    value: value\n  };\n};\n\n/***/ }),\n\n/***/ \"Oi40\":\n/***/ (function(module, exports, __webpack_require__) {\n\n__webpack_require__(\"rrqr\")('asyncIterator');\n\n/***/ }),\n\n/***/ \"Oqvp\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar def = __webpack_require__(\"cb3v\").f;\nvar has = __webpack_require__(\"5dDi\");\nvar TAG = __webpack_require__(\"Teay\")('toStringTag');\n\nmodule.exports = function (it, tag, stat) {\n  if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag });\n};\n\n/***/ }),\n\n/***/ \"P3U5\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// false -> Array#indexOf\n// true  -> Array#includes\nvar toIObject = __webpack_require__(\"SFi4\");\nvar toLength = __webpack_require__(\"5sKr\");\nvar toAbsoluteIndex = __webpack_require__(\"RCBg\");\nmodule.exports = function (IS_INCLUDES) {\n  return function ($this, el, fromIndex) {\n    var O = toIObject($this);\n    var length = toLength(O.length);\n    var index = toAbsoluteIndex(fromIndex, length);\n    var value;\n    // Array#includes uses SameValueZero equality algorithm\n    // eslint-disable-next-line no-self-compare\n    if (IS_INCLUDES && el != el) while (length > index) {\n      value = O[index++];\n      // eslint-disable-next-line no-self-compare\n      if (value != value) return true;\n      // Array#indexOf ignores holes, Array#includes - not\n    } else for (; length > index; index++) {\n      if (IS_INCLUDES || index in O) {\n        if (O[index] === el) return IS_INCLUDES || index || 0;\n      }\n    }return !IS_INCLUDES && -1;\n  };\n};\n\n/***/ }),\n\n/***/ \"P8NW\":\n/***/ (function(module, exports) {\n\nfunction _defineProperties(target, props) {\n  for (var i = 0; i < props.length; i++) {\n    var descriptor = props[i];\n    descriptor.enumerable = descriptor.enumerable || false;\n    descriptor.configurable = true;\n    if (\"value\" in descriptor) descriptor.writable = true;\n    Object.defineProperty(target, descriptor.key, descriptor);\n  }\n}\n\nfunction _createClass(Constructor, protoProps, staticProps) {\n  if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n  if (staticProps) _defineProperties(Constructor, staticProps);\n  return Constructor;\n}\n\nmodule.exports = _createClass;\n\n/***/ }),\n\n/***/ \"QTRl\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = _default;\n\nfunction _default(prop) {\n  return \"mdc-theme--\".concat(prop, \"-bg\");\n}\n//# sourceMappingURL=generateThemeClass.js.map\n\n/***/ }),\n\n/***/ \"Qs3+\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)\nvar has = __webpack_require__(\"5dDi\");\nvar toObject = __webpack_require__(\"Wenr\");\nvar IE_PROTO = __webpack_require__(\"yGA3\")('IE_PROTO');\nvar ObjectProto = Object.prototype;\n\nmodule.exports = Object.getPrototypeOf || function (O) {\n  O = toObject(O);\n  if (has(O, IE_PROTO)) return O[IE_PROTO];\n  if (typeof O.constructor == 'function' && O instanceof O.constructor) {\n    return O.constructor.prototype;\n  }return O instanceof Object ? ObjectProto : null;\n};\n\n/***/ }),\n\n/***/ \"RCBg\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar toInteger = __webpack_require__(\"ojkp\");\nvar max = Math.max;\nvar min = Math.min;\nmodule.exports = function (index, length) {\n  index = toInteger(index);\n  return index < 0 ? max(index + length, 0) : min(index, length);\n};\n\n/***/ }),\n\n/***/ \"RYBc\":\n/***/ (function(module, exports) {\n\n// removed by extract-text-webpack-plugin\n\n/***/ }),\n\n/***/ \"Rhd1\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar global = __webpack_require__(\"l7GE\");\nvar core = __webpack_require__(\"VT6h\");\nvar hide = __webpack_require__(\"viVs\");\nvar redefine = __webpack_require__(\"HnsU\");\nvar ctx = __webpack_require__(\"LJKU\");\nvar PROTOTYPE = 'prototype';\n\nvar $export = function $export(type, name, source) {\n  var IS_FORCED = type & $export.F;\n  var IS_GLOBAL = type & $export.G;\n  var IS_STATIC = type & $export.S;\n  var IS_PROTO = type & $export.P;\n  var IS_BIND = type & $export.B;\n  var target = IS_GLOBAL ? global : IS_STATIC ? global[name] || (global[name] = {}) : (global[name] || {})[PROTOTYPE];\n  var exports = IS_GLOBAL ? core : core[name] || (core[name] = {});\n  var expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {});\n  var key, own, out, exp;\n  if (IS_GLOBAL) source = name;\n  for (key in source) {\n    // contains in native\n    own = !IS_FORCED && target && target[key] !== undefined;\n    // export native or passed\n    out = (own ? target : source)[key];\n    // bind timers to global for call from export context\n    exp = IS_BIND && own ? ctx(out, global) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;\n    // extend global\n    if (target) redefine(target, key, out, type & $export.U);\n    // export\n    if (exports[key] != out) hide(exports, key, exp);\n    if (IS_PROTO && expProto[key] != out) expProto[key] = out;\n  }\n};\nglobal.core = core;\n// type bitmap\n$export.F = 1; // forced\n$export.G = 2; // global\n$export.S = 4; // static\n$export.P = 8; // proto\n$export.B = 16; // bind\n$export.W = 32; // wrap\n$export.U = 64; // safe\n$export.R = 128; // real proto method for `library`\nmodule.exports = $export;\n\n/***/ }),\n\n/***/ \"Rv+/\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n// 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined)\n\nvar $export = __webpack_require__(\"Rhd1\");\nvar $find = __webpack_require__(\"VBtO\")(6);\nvar KEY = 'findIndex';\nvar forced = true;\n// Shouldn't skip holes\nif (KEY in []) Array(1)[KEY](function () {\n  forced = false;\n});\n$export($export.P + $export.F * forced, 'Array', {\n  findIndex: function findIndex(callbackfn /* , that = undefined */) {\n    return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n  }\n});\n__webpack_require__(\"foUn\")(KEY);\n\n/***/ }),\n\n/***/ \"SFi4\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// to indexed object, toObject with fallback for non-array-like ES3 strings\nvar IObject = __webpack_require__(\"Lk9x\");\nvar defined = __webpack_require__(\"hywW\");\nmodule.exports = function (it) {\n  return IObject(defined(it));\n};\n\n/***/ }),\n\n/***/ \"SpGf\":\n/***/ (function(module, exports) {\n\nfunction _interopRequireDefault(obj) {\n  return obj && obj.__esModule ? obj : {\n    default: obj\n  };\n}\n\nmodule.exports = _interopRequireDefault;\n\n/***/ }),\n\n/***/ \"TDtx\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// getting tag from 19.1.3.6 Object.prototype.toString()\nvar cof = __webpack_require__(\"4i3n\");\nvar TAG = __webpack_require__(\"Teay\")('toStringTag');\n// ES3 wrong here\nvar ARG = cof(function () {\n  return arguments;\n}()) == 'Arguments';\n\n// fallback for IE11 Script Access Denied error\nvar tryGet = function tryGet(it, key) {\n  try {\n    return it[key];\n  } catch (e) {/* empty */}\n};\n\nmodule.exports = function (it) {\n  var O, T, B;\n  return it === undefined ? 'Undefined' : it === null ? 'Null'\n  // @@toStringTag case\n  : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T\n  // builtinTag case\n  : ARG ? cof(O)\n  // ES3 arguments fallback\n  : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;\n};\n\n/***/ }),\n\n/***/ \"TO+D\":\n/***/ (function(module, exports) {\n\nmodule.exports = function (el, options) {\n  options = options || {};\n\n  var elementDocument = el.ownerDocument || el;\n  var basicTabbables = [];\n  var orderedTabbables = [];\n\n  // A node is \"available\" if\n  // - it's computed style\n  var isUnavailable = createIsUnavailable(elementDocument);\n\n  var candidateSelectors = ['input', 'select', 'a[href]', 'textarea', 'button', '[tabindex]'];\n\n  var candidates = el.querySelectorAll(candidateSelectors.join(','));\n\n  if (options.includeContainer) {\n    var matches = Element.prototype.matches || Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;\n\n    if (candidateSelectors.some(function (candidateSelector) {\n      return matches.call(el, candidateSelector);\n    })) {\n      candidates = Array.prototype.slice.apply(candidates);\n      candidates.unshift(el);\n    }\n  }\n\n  var candidate, candidateIndexAttr, candidateIndex;\n  for (var i = 0, l = candidates.length; i < l; i++) {\n    candidate = candidates[i];\n    candidateIndexAttr = parseInt(candidate.getAttribute('tabindex'), 10);\n    candidateIndex = isNaN(candidateIndexAttr) ? candidate.tabIndex : candidateIndexAttr;\n\n    if (candidateIndex < 0 || candidate.tagName === 'INPUT' && candidate.type === 'hidden' || candidate.disabled || isUnavailable(candidate, elementDocument)) {\n      continue;\n    }\n\n    if (candidateIndex === 0) {\n      basicTabbables.push(candidate);\n    } else {\n      orderedTabbables.push({\n        index: i,\n        tabIndex: candidateIndex,\n        node: candidate\n      });\n    }\n  }\n\n  var tabbableNodes = orderedTabbables.sort(function (a, b) {\n    return a.tabIndex === b.tabIndex ? a.index - b.index : a.tabIndex - b.tabIndex;\n  }).map(function (a) {\n    return a.node;\n  });\n\n  Array.prototype.push.apply(tabbableNodes, basicTabbables);\n\n  return tabbableNodes;\n};\n\nfunction createIsUnavailable(elementDocument) {\n  // Node cache must be refreshed on every check, in case\n  // the content of the element has changed\n  var isOffCache = [];\n\n  // \"off\" means `display: none;`, as opposed to \"hidden\",\n  // which means `visibility: hidden;`. getComputedStyle\n  // accurately reflects visiblity in context but not\n  // \"off\" state, so we need to recursively check parents.\n\n  function isOff(node, nodeComputedStyle) {\n    if (node === elementDocument.documentElement) return false;\n\n    // Find the cached node (Array.prototype.find not available in IE9)\n    for (var i = 0, length = isOffCache.length; i < length; i++) {\n      if (isOffCache[i][0] === node) return isOffCache[i][1];\n    }\n\n    nodeComputedStyle = nodeComputedStyle || elementDocument.defaultView.getComputedStyle(node);\n\n    var result = false;\n\n    if (nodeComputedStyle.display === 'none') {\n      result = true;\n    } else if (node.parentNode) {\n      result = isOff(node.parentNode);\n    }\n\n    isOffCache.push([node, result]);\n\n    return result;\n  }\n\n  return function isUnavailable(node) {\n    if (node === elementDocument.documentElement) return false;\n\n    var computedStyle = elementDocument.defaultView.getComputedStyle(node);\n\n    if (isOff(node, computedStyle)) return true;\n\n    return computedStyle.visibility === 'hidden';\n  };\n}\n\n/***/ }),\n\n/***/ \"TUpU\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\nObject.defineProperty(__webpack_exports__, \"__esModule\", { value: true });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"setLogLevel\", function() { return setLogLevel; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"Logger\", function() { return Logger; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"LogLevel\", function() { return LogLevel; });\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n/**\r\n * A container for all of the Logger instances\r\n */\nvar instances = [];\n/**\r\n * The JS SDK supports 5 log levels and also allows a user the ability to\r\n * silence the logs altogether.\r\n *\r\n * The order is a follows:\r\n * DEBUG < VERBOSE < INFO < WARN < ERROR\r\n *\r\n * All of the log types above the current log level will be captured (i.e. if\r\n * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and\r\n * `VERBOSE` logs will not)\r\n */\nvar LogLevel;\n(function (LogLevel) {\n    LogLevel[LogLevel[\"DEBUG\"] = 0] = \"DEBUG\";\n    LogLevel[LogLevel[\"VERBOSE\"] = 1] = \"VERBOSE\";\n    LogLevel[LogLevel[\"INFO\"] = 2] = \"INFO\";\n    LogLevel[LogLevel[\"WARN\"] = 3] = \"WARN\";\n    LogLevel[LogLevel[\"ERROR\"] = 4] = \"ERROR\";\n    LogLevel[LogLevel[\"SILENT\"] = 5] = \"SILENT\";\n})(LogLevel || (LogLevel = {}));\n/**\r\n * The default log level\r\n */\nvar defaultLogLevel = LogLevel.INFO;\n/**\r\n * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR\r\n * messages on to their corresponding console counterparts (if the log method\r\n * is supported by the current log level)\r\n */\nvar defaultLogHandler = function defaultLogHandler(instance, logType) {\n    var args = [];\n    for (var _i = 2; _i < arguments.length; _i++) {\n        args[_i - 2] = arguments[_i];\n    }\n    if (logType < instance.logLevel) return;\n    var now = new Date().toISOString();\n    switch (logType) {\n        /**\r\n         * By default, `console.debug` is not displayed in the developer console (in\r\n         * chrome). To avoid forcing users to have to opt-in to these logs twice\r\n         * (i.e. once for firebase, and once in the console), we are sending `DEBUG`\r\n         * logs to the `console.log` function.\r\n         */\n        case LogLevel.DEBUG:\n            console.log.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\n            break;\n        case LogLevel.VERBOSE:\n            console.log.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\n            break;\n        case LogLevel.INFO:\n            console.info.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\n            break;\n        case LogLevel.WARN:\n            console.warn.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\n            break;\n        case LogLevel.ERROR:\n            console.error.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\n            break;\n        default:\n            throw new Error(\"Attempted to log a message with an invalid logType (value: \" + logType + \")\");\n    }\n};\nvar Logger = /** @class */function () {\n    /**\r\n     * Gives you an instance of a Logger to capture messages according to\r\n     * Firebase's logging scheme.\r\n     *\r\n     * @param name The name that the logs will be associated with\r\n     */\n    function Logger(name) {\n        this.name = name;\n        /**\r\n         * The log level of the given Logger instance.\r\n         */\n        this._logLevel = defaultLogLevel;\n        /**\r\n         * The log handler for the Logger instance.\r\n         */\n        this._logHandler = defaultLogHandler;\n        /**\r\n         * Capture the current instance for later use\r\n         */\n        instances.push(this);\n    }\n    Object.defineProperty(Logger.prototype, \"logLevel\", {\n        get: function get() {\n            return this._logLevel;\n        },\n        set: function set(val) {\n            if (!(val in LogLevel)) {\n                throw new TypeError('Invalid value assigned to `logLevel`');\n            }\n            this._logLevel = val;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(Logger.prototype, \"logHandler\", {\n        get: function get() {\n            return this._logHandler;\n        },\n        set: function set(val) {\n            if (typeof val !== 'function') {\n                throw new TypeError('Value assigned to `logHandler` must be a function');\n            }\n            this._logHandler = val;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    /**\r\n     * The functions below are all based on the `console` interface\r\n     */\n    Logger.prototype.debug = function () {\n        var args = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            args[_i] = arguments[_i];\n        }\n        this._logHandler.apply(this, [this, LogLevel.DEBUG].concat(args));\n    };\n    Logger.prototype.log = function () {\n        var args = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            args[_i] = arguments[_i];\n        }\n        this._logHandler.apply(this, [this, LogLevel.VERBOSE].concat(args));\n    };\n    Logger.prototype.info = function () {\n        var args = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            args[_i] = arguments[_i];\n        }\n        this._logHandler.apply(this, [this, LogLevel.INFO].concat(args));\n    };\n    Logger.prototype.warn = function () {\n        var args = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            args[_i] = arguments[_i];\n        }\n        this._logHandler.apply(this, [this, LogLevel.WARN].concat(args));\n    };\n    Logger.prototype.error = function () {\n        var args = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            args[_i] = arguments[_i];\n        }\n        this._logHandler.apply(this, [this, LogLevel.ERROR].concat(args));\n    };\n    return Logger;\n}();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nfunction setLogLevel(level) {\n    instances.forEach(function (inst) {\n        inst.logLevel = level;\n    });\n}\n\n\n\n/***/ }),\n\n/***/ \"Teay\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar store = __webpack_require__(\"M/ML\")('wks');\nvar uid = __webpack_require__(\"nzN6\");\nvar Symbol = __webpack_require__(\"l7GE\").Symbol;\nvar USE_SYMBOL = typeof Symbol == 'function';\n\nvar $exports = module.exports = function (name) {\n  return store[name] || (store[name] = USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name));\n};\n\n$exports.store = store;\n\n/***/ }),\n\n/***/ \"TiUH\":\n/***/ (function(module, exports, __webpack_require__) {\n\n__webpack_require__(\"12V7\");\n__webpack_require__(\"zKLb\");\nmodule.exports = __webpack_require__(\"5/Vk\").f('iterator');\n\n/***/ }),\n\n/***/ \"UJE0\":\n/***/ (function(module, exports) {\n\nfunction _getPrototypeOf(o) {\n  module.exports = _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {\n    return o.__proto__ || Object.getPrototypeOf(o);\n  };\n  return _getPrototypeOf(o);\n}\n\nmodule.exports = _getPrototypeOf;\n\n/***/ }),\n\n/***/ \"VBtO\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 0 -> Array#forEach\n// 1 -> Array#map\n// 2 -> Array#filter\n// 3 -> Array#some\n// 4 -> Array#every\n// 5 -> Array#find\n// 6 -> Array#findIndex\nvar ctx = __webpack_require__(\"LJKU\");\nvar IObject = __webpack_require__(\"Lk9x\");\nvar toObject = __webpack_require__(\"Wenr\");\nvar toLength = __webpack_require__(\"5sKr\");\nvar asc = __webpack_require__(\"k3/E\");\nmodule.exports = function (TYPE, $create) {\n  var IS_MAP = TYPE == 1;\n  var IS_FILTER = TYPE == 2;\n  var IS_SOME = TYPE == 3;\n  var IS_EVERY = TYPE == 4;\n  var IS_FIND_INDEX = TYPE == 6;\n  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;\n  var create = $create || asc;\n  return function ($this, callbackfn, that) {\n    var O = toObject($this);\n    var self = IObject(O);\n    var f = ctx(callbackfn, that, 3);\n    var length = toLength(self.length);\n    var index = 0;\n    var result = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;\n    var val, res;\n    for (; length > index; index++) {\n      if (NO_HOLES || index in self) {\n        val = self[index];\n        res = f(val, index, O);\n        if (TYPE) {\n          if (IS_MAP) result[index] = res; // map\n          else if (res) switch (TYPE) {\n              case 3:\n                return true; // some\n              case 5:\n                return val; // find\n              case 6:\n                return index; // findIndex\n              case 2:\n                result.push(val); // filter\n            } else if (IS_EVERY) return false; // every\n        }\n      }\n    }return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result;\n  };\n};\n\n/***/ }),\n\n/***/ \"VT6h\":\n/***/ (function(module, exports) {\n\nvar core = module.exports = { version: '2.5.5' };\nif (typeof __e == 'number') __e = core; // eslint-disable-line no-undef\n\n/***/ }),\n\n/***/ \"VmyN\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// helper for String#{startsWith, endsWith, includes}\nvar isRegExp = __webpack_require__(\"MdSy\");\nvar defined = __webpack_require__(\"hywW\");\n\nmodule.exports = function (that, searchString, NAME) {\n  if (isRegExp(searchString)) throw TypeError('String#' + NAME + \" doesn't accept regex!\");\n  return String(defined(that));\n};\n\n/***/ }),\n\n/***/ \"Wd1n\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n// 19.1.2.1 Object.assign(target, source, ...)\n\nvar getKeys = __webpack_require__(\"/CHd\");\nvar gOPS = __webpack_require__(\"dpY+\");\nvar pIE = __webpack_require__(\"Nwxm\");\nvar toObject = __webpack_require__(\"Wenr\");\nvar IObject = __webpack_require__(\"Lk9x\");\nvar $assign = Object.assign;\n\n// should work with symbols and should have deterministic property order (V8 bug)\nmodule.exports = !$assign || __webpack_require__(\"xvHV\")(function () {\n  var A = {};\n  var B = {};\n  // eslint-disable-next-line no-undef\n  var S = Symbol();\n  var K = 'abcdefghijklmnopqrst';\n  A[S] = 7;\n  K.split('').forEach(function (k) {\n    B[k] = k;\n  });\n  return $assign({}, A)[S] != 7 || Object.keys($assign({}, B)).join('') != K;\n}) ? function assign(target, source) {\n  // eslint-disable-line no-unused-vars\n  var T = toObject(target);\n  var aLen = arguments.length;\n  var index = 1;\n  var getSymbols = gOPS.f;\n  var isEnum = pIE.f;\n  while (aLen > index) {\n    var S = IObject(arguments[index++]);\n    var keys = getSymbols ? getKeys(S).concat(getSymbols(S)) : getKeys(S);\n    var length = keys.length;\n    var j = 0;\n    var key;\n    while (length > j) {\n      if (isEnum.call(S, key = keys[j++])) T[key] = S[key];\n    }\n  }return T;\n} : $assign;\n\n/***/ }),\n\n/***/ \"Wenr\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 7.1.13 ToObject(argument)\nvar defined = __webpack_require__(\"hywW\");\nmodule.exports = function (it) {\n  return Object(defined(it));\n};\n\n/***/ }),\n\n/***/ \"WsyM\":\n/***/ (function(module, exports, __webpack_require__) {\n\n__webpack_require__(\"GC/y\");\nmodule.exports = __webpack_require__(\"VT6h\").Object.assign;\n\n/***/ }),\n\n/***/ \"YBFa\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 7.1.1 ToPrimitive(input [, PreferredType])\nvar isObject = __webpack_require__(\"A7+C\");\n// instead of the ES6 spec version, we didn't implement @@toPrimitive case\n// and the second argument - flag - preferred type is a string\nmodule.exports = function (it, S) {\n  if (!isObject(it)) return it;\n  var fn, val;\n  if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n  if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val;\n  if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n  throw TypeError(\"Can't convert object to primitive value\");\n};\n\n/***/ }),\n\n/***/ \"Z+w7\":\n/***/ (function(module, exports) {\n\nmodule.exports = false;\n\n/***/ }),\n\n/***/ \"ZUoI\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nfunction _interopDefault(ex) {\n  return ex && typeof ex === 'object' && 'default' in ex ? ex['default'] : ex;\n}\n\n__webpack_require__(\"wGjj\");\nvar firebase = _interopDefault(__webpack_require__(\"dP58\"));\n\n/**\r\n * @license\r\n * Copyright 2018 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n\nmodule.exports = firebase;\n\n/***/ }),\n\n/***/ \"Zbst\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n/* WEBPACK VAR INJECTION */(function(global) {\n\n// Store setTimeout reference so promise-polyfill will be unaffected by\n// other code modifying setTimeout (like sinon.useFakeTimers())\n\nvar setTimeoutFunc = setTimeout;\n\nfunction noop() {}\n\n// Polyfill for Function.prototype.bind\nfunction bind(fn, thisArg) {\n  return function () {\n    fn.apply(thisArg, arguments);\n  };\n}\n\nfunction Promise(fn) {\n  if (!(this instanceof Promise)) throw new TypeError('Promises must be constructed via new');\n  if (typeof fn !== 'function') throw new TypeError('not a function');\n  this._state = 0;\n  this._handled = false;\n  this._value = undefined;\n  this._deferreds = [];\n\n  doResolve(fn, this);\n}\n\nfunction handle(self, deferred) {\n  while (self._state === 3) {\n    self = self._value;\n  }\n  if (self._state === 0) {\n    self._deferreds.push(deferred);\n    return;\n  }\n  self._handled = true;\n  Promise._immediateFn(function () {\n    var cb = self._state === 1 ? deferred.onFulfilled : deferred.onRejected;\n    if (cb === null) {\n      (self._state === 1 ? resolve : reject)(deferred.promise, self._value);\n      return;\n    }\n    var ret;\n    try {\n      ret = cb(self._value);\n    } catch (e) {\n      reject(deferred.promise, e);\n      return;\n    }\n    resolve(deferred.promise, ret);\n  });\n}\n\nfunction resolve(self, newValue) {\n  try {\n    // Promise Resolution Procedure: https://github.com/promises-aplus/promises-spec#the-promise-resolution-procedure\n    if (newValue === self) throw new TypeError('A promise cannot be resolved with itself.');\n    if (newValue && (typeof newValue === 'object' || typeof newValue === 'function')) {\n      var then = newValue.then;\n      if (newValue instanceof Promise) {\n        self._state = 3;\n        self._value = newValue;\n        finale(self);\n        return;\n      } else if (typeof then === 'function') {\n        doResolve(bind(then, newValue), self);\n        return;\n      }\n    }\n    self._state = 1;\n    self._value = newValue;\n    finale(self);\n  } catch (e) {\n    reject(self, e);\n  }\n}\n\nfunction reject(self, newValue) {\n  self._state = 2;\n  self._value = newValue;\n  finale(self);\n}\n\nfunction finale(self) {\n  if (self._state === 2 && self._deferreds.length === 0) {\n    Promise._immediateFn(function () {\n      if (!self._handled) {\n        Promise._unhandledRejectionFn(self._value);\n      }\n    });\n  }\n\n  for (var i = 0, len = self._deferreds.length; i < len; i++) {\n    handle(self, self._deferreds[i]);\n  }\n  self._deferreds = null;\n}\n\nfunction Handler(onFulfilled, onRejected, promise) {\n  this.onFulfilled = typeof onFulfilled === 'function' ? onFulfilled : null;\n  this.onRejected = typeof onRejected === 'function' ? onRejected : null;\n  this.promise = promise;\n}\n\n/**\n * Take a potentially misbehaving resolver function and make sure\n * onFulfilled and onRejected are only called once.\n *\n * Makes no guarantees about asynchrony.\n */\nfunction doResolve(fn, self) {\n  var done = false;\n  try {\n    fn(function (value) {\n      if (done) return;\n      done = true;\n      resolve(self, value);\n    }, function (reason) {\n      if (done) return;\n      done = true;\n      reject(self, reason);\n    });\n  } catch (ex) {\n    if (done) return;\n    done = true;\n    reject(self, ex);\n  }\n}\n\nPromise.prototype['catch'] = function (onRejected) {\n  return this.then(null, onRejected);\n};\n\nPromise.prototype.then = function (onFulfilled, onRejected) {\n  var prom = new this.constructor(noop);\n\n  handle(this, new Handler(onFulfilled, onRejected, prom));\n  return prom;\n};\n\nPromise.prototype['finally'] = function (callback) {\n  var constructor = this.constructor;\n  return this.then(function (value) {\n    return constructor.resolve(callback()).then(function () {\n      return value;\n    });\n  }, function (reason) {\n    return constructor.resolve(callback()).then(function () {\n      return constructor.reject(reason);\n    });\n  });\n};\n\nPromise.all = function (arr) {\n  return new Promise(function (resolve, reject) {\n    if (!arr || typeof arr.length === 'undefined') throw new TypeError('Promise.all accepts an array');\n    var args = Array.prototype.slice.call(arr);\n    if (args.length === 0) return resolve([]);\n    var remaining = args.length;\n\n    function res(i, val) {\n      try {\n        if (val && (typeof val === 'object' || typeof val === 'function')) {\n          var then = val.then;\n          if (typeof then === 'function') {\n            then.call(val, function (val) {\n              res(i, val);\n            }, reject);\n            return;\n          }\n        }\n        args[i] = val;\n        if (--remaining === 0) {\n          resolve(args);\n        }\n      } catch (ex) {\n        reject(ex);\n      }\n    }\n\n    for (var i = 0; i < args.length; i++) {\n      res(i, args[i]);\n    }\n  });\n};\n\nPromise.resolve = function (value) {\n  if (value && typeof value === 'object' && value.constructor === Promise) {\n    return value;\n  }\n\n  return new Promise(function (resolve) {\n    resolve(value);\n  });\n};\n\nPromise.reject = function (value) {\n  return new Promise(function (resolve, reject) {\n    reject(value);\n  });\n};\n\nPromise.race = function (values) {\n  return new Promise(function (resolve, reject) {\n    for (var i = 0, len = values.length; i < len; i++) {\n      values[i].then(resolve, reject);\n    }\n  });\n};\n\n// Use polyfill for setImmediate for performance gains\nPromise._immediateFn = typeof setImmediate === 'function' && function (fn) {\n  setImmediate(fn);\n} || function (fn) {\n  setTimeoutFunc(fn, 0);\n};\n\nPromise._unhandledRejectionFn = function _unhandledRejectionFn(err) {\n  if (typeof console !== 'undefined' && console) {\n    console.warn('Possible Unhandled Promise Rejection:', err); // eslint-disable-line no-console\n  }\n};\n\nvar globalNS = function () {\n  // the only reliable means to get the global object is\n  // `Function('return this')()`\n  // However, this causes CSP violations in Chrome apps.\n  if (typeof self !== 'undefined') {\n    return self;\n  }\n  if (typeof window !== 'undefined') {\n    return window;\n  }\n  if (typeof global !== 'undefined') {\n    return global;\n  }\n  throw new Error('unable to locate global object');\n}();\n\nif (!globalNS.Promise) {\n  globalNS.Promise = Promise;\n}\n/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(\"Mhc0\")))\n\n/***/ }),\n\n/***/ \"aV+f\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"d\", function() { return createStore; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"c\", function() { return combineReducers; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"b\", function() { return bindActionCreators; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"a\", function() { return applyMiddleware; });\n/* unused harmony export compose */\n/* unused harmony export __DO_NOT_USE__ActionTypes */\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_symbol_observable__ = __webpack_require__(\"LkZ7\");\n\n\n/**\n * These are private action types reserved by Redux.\n * For any unknown actions, you must return the current state.\n * If the current state is undefined, you must return the initial state.\n * Do not reference these action types directly in your code.\n */\nvar randomString = function randomString() {\n  return Math.random().toString(36).substring(7).split('').join('.');\n};\n\nvar ActionTypes = {\n  INIT: \"@@redux/INIT\" + randomString(),\n  REPLACE: \"@@redux/REPLACE\" + randomString(),\n  PROBE_UNKNOWN_ACTION: function PROBE_UNKNOWN_ACTION() {\n    return \"@@redux/PROBE_UNKNOWN_ACTION\" + randomString();\n  }\n};\n\n/**\n * @param {any} obj The object to inspect.\n * @returns {boolean} True if the argument appears to be a plain object.\n */\nfunction isPlainObject(obj) {\n  if (typeof obj !== 'object' || obj === null) return false;\n  var proto = obj;\n\n  while (Object.getPrototypeOf(proto) !== null) {\n    proto = Object.getPrototypeOf(proto);\n  }\n\n  return Object.getPrototypeOf(obj) === proto;\n}\n\n/**\n * Creates a Redux store that holds the state tree.\n * The only way to change the data in the store is to call `dispatch()` on it.\n *\n * There should only be a single store in your app. To specify how different\n * parts of the state tree respond to actions, you may combine several reducers\n * into a single reducer function by using `combineReducers`.\n *\n * @param {Function} reducer A function that returns the next state tree, given\n * the current state tree and the action to handle.\n *\n * @param {any} [preloadedState] The initial state. You may optionally specify it\n * to hydrate the state from the server in universal apps, or to restore a\n * previously serialized user session.\n * If you use `combineReducers` to produce the root reducer function, this must be\n * an object with the same shape as `combineReducers` keys.\n *\n * @param {Function} [enhancer] The store enhancer. You may optionally specify it\n * to enhance the store with third-party capabilities such as middleware,\n * time travel, persistence, etc. The only store enhancer that ships with Redux\n * is `applyMiddleware()`.\n *\n * @returns {Store} A Redux store that lets you read the state, dispatch actions\n * and subscribe to changes.\n */\n\nfunction createStore(reducer, preloadedState, enhancer) {\n  var _ref2;\n\n  if (typeof preloadedState === 'function' && typeof enhancer === 'function' || typeof enhancer === 'function' && typeof arguments[3] === 'function') {\n    throw new Error('It looks like you are passing several store enhancers to ' + 'createStore(). This is not supported. Instead, compose them ' + 'together to a single function');\n  }\n\n  if (typeof preloadedState === 'function' && typeof enhancer === 'undefined') {\n    enhancer = preloadedState;\n    preloadedState = undefined;\n  }\n\n  if (typeof enhancer !== 'undefined') {\n    if (typeof enhancer !== 'function') {\n      throw new Error('Expected the enhancer to be a function.');\n    }\n\n    return enhancer(createStore)(reducer, preloadedState);\n  }\n\n  if (typeof reducer !== 'function') {\n    throw new Error('Expected the reducer to be a function.');\n  }\n\n  var currentReducer = reducer;\n  var currentState = preloadedState;\n  var currentListeners = [];\n  var nextListeners = currentListeners;\n  var isDispatching = false;\n\n  function ensureCanMutateNextListeners() {\n    if (nextListeners === currentListeners) {\n      nextListeners = currentListeners.slice();\n    }\n  }\n  /**\n   * Reads the state tree managed by the store.\n   *\n   * @returns {any} The current state tree of your application.\n   */\n\n  function getState() {\n    if (isDispatching) {\n      throw new Error('You may not call store.getState() while the reducer is executing. ' + 'The reducer has already received the state as an argument. ' + 'Pass it down from the top reducer instead of reading it from the store.');\n    }\n\n    return currentState;\n  }\n  /**\n   * Adds a change listener. It will be called any time an action is dispatched,\n   * and some part of the state tree may potentially have changed. You may then\n   * call `getState()` to read the current state tree inside the callback.\n   *\n   * You may call `dispatch()` from a change listener, with the following\n   * caveats:\n   *\n   * 1. The subscriptions are snapshotted just before every `dispatch()` call.\n   * If you subscribe or unsubscribe while the listeners are being invoked, this\n   * will not have any effect on the `dispatch()` that is currently in progress.\n   * However, the next `dispatch()` call, whether nested or not, will use a more\n   * recent snapshot of the subscription list.\n   *\n   * 2. The listener should not expect to see all state changes, as the state\n   * might have been updated multiple times during a nested `dispatch()` before\n   * the listener is called. It is, however, guaranteed that all subscribers\n   * registered before the `dispatch()` started will be called with the latest\n   * state by the time it exits.\n   *\n   * @param {Function} listener A callback to be invoked on every dispatch.\n   * @returns {Function} A function to remove this change listener.\n   */\n\n  function subscribe(listener) {\n    if (typeof listener !== 'function') {\n      throw new Error('Expected the listener to be a function.');\n    }\n\n    if (isDispatching) {\n      throw new Error('You may not call store.subscribe() while the reducer is executing. ' + 'If you would like to be notified after the store has been updated, subscribe from a ' + 'component and invoke store.getState() in the callback to access the latest state. ' + 'See https://redux.js.org/api-reference/store#subscribe(listener) for more details.');\n    }\n\n    var isSubscribed = true;\n    ensureCanMutateNextListeners();\n    nextListeners.push(listener);\n    return function unsubscribe() {\n      if (!isSubscribed) {\n        return;\n      }\n\n      if (isDispatching) {\n        throw new Error('You may not unsubscribe from a store listener while the reducer is executing. ' + 'See https://redux.js.org/api-reference/store#subscribe(listener) for more details.');\n      }\n\n      isSubscribed = false;\n      ensureCanMutateNextListeners();\n      var index = nextListeners.indexOf(listener);\n      nextListeners.splice(index, 1);\n    };\n  }\n  /**\n   * Dispatches an action. It is the only way to trigger a state change.\n   *\n   * The `reducer` function, used to create the store, will be called with the\n   * current state tree and the given `action`. Its return value will\n   * be considered the **next** state of the tree, and the change listeners\n   * will be notified.\n   *\n   * The base implementation only supports plain object actions. If you want to\n   * dispatch a Promise, an Observable, a thunk, or something else, you need to\n   * wrap your store creating function into the corresponding middleware. For\n   * example, see the documentation for the `redux-thunk` package. Even the\n   * middleware will eventually dispatch plain object actions using this method.\n   *\n   * @param {Object} action A plain object representing “what changed”. It is\n   * a good idea to keep actions serializable so you can record and replay user\n   * sessions, or use the time travelling `redux-devtools`. An action must have\n   * a `type` property which may not be `undefined`. It is a good idea to use\n   * string constants for action types.\n   *\n   * @returns {Object} For convenience, the same action object you dispatched.\n   *\n   * Note that, if you use a custom middleware, it may wrap `dispatch()` to\n   * return something else (for example, a Promise you can await).\n   */\n\n  function dispatch(action) {\n    if (!isPlainObject(action)) {\n      throw new Error('Actions must be plain objects. ' + 'Use custom middleware for async actions.');\n    }\n\n    if (typeof action.type === 'undefined') {\n      throw new Error('Actions may not have an undefined \"type\" property. ' + 'Have you misspelled a constant?');\n    }\n\n    if (isDispatching) {\n      throw new Error('Reducers may not dispatch actions.');\n    }\n\n    try {\n      isDispatching = true;\n      currentState = currentReducer(currentState, action);\n    } finally {\n      isDispatching = false;\n    }\n\n    var listeners = currentListeners = nextListeners;\n\n    for (var i = 0; i < listeners.length; i++) {\n      var listener = listeners[i];\n      listener();\n    }\n\n    return action;\n  }\n  /**\n   * Replaces the reducer currently used by the store to calculate the state.\n   *\n   * You might need this if your app implements code splitting and you want to\n   * load some of the reducers dynamically. You might also need this if you\n   * implement a hot reloading mechanism for Redux.\n   *\n   * @param {Function} nextReducer The reducer for the store to use instead.\n   * @returns {void}\n   */\n\n  function replaceReducer(nextReducer) {\n    if (typeof nextReducer !== 'function') {\n      throw new Error('Expected the nextReducer to be a function.');\n    }\n\n    currentReducer = nextReducer;\n    dispatch({\n      type: ActionTypes.REPLACE\n    });\n  }\n  /**\n   * Interoperability point for observable/reactive libraries.\n   * @returns {observable} A minimal observable of state changes.\n   * For more information, see the observable proposal:\n   * https://github.com/tc39/proposal-observable\n   */\n\n  function observable() {\n    var _ref;\n\n    var outerSubscribe = subscribe;\n    return _ref = {\n      /**\n       * The minimal observable subscription method.\n       * @param {Object} observer Any object that can be used as an observer.\n       * The observer object should have a `next` method.\n       * @returns {subscription} An object with an `unsubscribe` method that can\n       * be used to unsubscribe the observable from the store, and prevent further\n       * emission of values from the observable.\n       */\n      subscribe: function subscribe(observer) {\n        if (typeof observer !== 'object' || observer === null) {\n          throw new TypeError('Expected the observer to be an object.');\n        }\n\n        function observeState() {\n          if (observer.next) {\n            observer.next(getState());\n          }\n        }\n\n        observeState();\n        var unsubscribe = outerSubscribe(observeState);\n        return {\n          unsubscribe: unsubscribe\n        };\n      }\n    }, _ref[__WEBPACK_IMPORTED_MODULE_0_symbol_observable__[\"a\" /* default */]] = function () {\n      return this;\n    }, _ref;\n  } // When a store is created, an \"INIT\" action is dispatched so that every\n  // reducer returns their initial state. This effectively populates\n  // the initial state tree.\n\n\n  dispatch({\n    type: ActionTypes.INIT\n  });\n  return _ref2 = {\n    dispatch: dispatch,\n    subscribe: subscribe,\n    getState: getState,\n    replaceReducer: replaceReducer\n  }, _ref2[__WEBPACK_IMPORTED_MODULE_0_symbol_observable__[\"a\" /* default */]] = observable, _ref2;\n}\n\n/**\n * Prints a warning in the console if it exists.\n *\n * @param {String} message The warning message.\n * @returns {void}\n */\nfunction warning(message) {\n  /* eslint-disable no-console */\n  if (typeof console !== 'undefined' && typeof console.error === 'function') {\n    console.error(message);\n  }\n  /* eslint-enable no-console */\n\n  try {\n    // This error was thrown as a convenience so that if you enable\n    // \"break on all exceptions\" in your console,\n    // it would pause the execution at this line.\n    throw new Error(message);\n  } catch (e) {} // eslint-disable-line no-empty\n}\n\nfunction getUndefinedStateErrorMessage(key, action) {\n  var actionType = action && action.type;\n  var actionDescription = actionType && \"action \\\"\" + String(actionType) + \"\\\"\" || 'an action';\n  return \"Given \" + actionDescription + \", reducer \\\"\" + key + \"\\\" returned undefined. \" + \"To ignore an action, you must explicitly return the previous state. \" + \"If you want this reducer to hold no value, you can return null instead of undefined.\";\n}\n\nfunction getUnexpectedStateShapeWarningMessage(inputState, reducers, action, unexpectedKeyCache) {\n  var reducerKeys = Object.keys(reducers);\n  var argumentName = action && action.type === ActionTypes.INIT ? 'preloadedState argument passed to createStore' : 'previous state received by the reducer';\n\n  if (reducerKeys.length === 0) {\n    return 'Store does not have a valid reducer. Make sure the argument passed ' + 'to combineReducers is an object whose values are reducers.';\n  }\n\n  if (!isPlainObject(inputState)) {\n    return \"The \" + argumentName + \" has unexpected type of \\\"\" + {}.toString.call(inputState).match(/\\s([a-z|A-Z]+)/)[1] + \"\\\". Expected argument to be an object with the following \" + (\"keys: \\\"\" + reducerKeys.join('\", \"') + \"\\\"\");\n  }\n\n  var unexpectedKeys = Object.keys(inputState).filter(function (key) {\n    return !reducers.hasOwnProperty(key) && !unexpectedKeyCache[key];\n  });\n  unexpectedKeys.forEach(function (key) {\n    unexpectedKeyCache[key] = true;\n  });\n  if (action && action.type === ActionTypes.REPLACE) return;\n\n  if (unexpectedKeys.length > 0) {\n    return \"Unexpected \" + (unexpectedKeys.length > 1 ? 'keys' : 'key') + \" \" + (\"\\\"\" + unexpectedKeys.join('\", \"') + \"\\\" found in \" + argumentName + \". \") + \"Expected to find one of the known reducer keys instead: \" + (\"\\\"\" + reducerKeys.join('\", \"') + \"\\\". Unexpected keys will be ignored.\");\n  }\n}\n\nfunction assertReducerShape(reducers) {\n  Object.keys(reducers).forEach(function (key) {\n    var reducer = reducers[key];\n    var initialState = reducer(undefined, {\n      type: ActionTypes.INIT\n    });\n\n    if (typeof initialState === 'undefined') {\n      throw new Error(\"Reducer \\\"\" + key + \"\\\" returned undefined during initialization. \" + \"If the state passed to the reducer is undefined, you must \" + \"explicitly return the initial state. The initial state may \" + \"not be undefined. If you don't want to set a value for this reducer, \" + \"you can use null instead of undefined.\");\n    }\n\n    if (typeof reducer(undefined, {\n      type: ActionTypes.PROBE_UNKNOWN_ACTION()\n    }) === 'undefined') {\n      throw new Error(\"Reducer \\\"\" + key + \"\\\" returned undefined when probed with a random type. \" + (\"Don't try to handle \" + ActionTypes.INIT + \" or other actions in \\\"redux/*\\\" \") + \"namespace. They are considered private. Instead, you must return the \" + \"current state for any unknown actions, unless it is undefined, \" + \"in which case you must return the initial state, regardless of the \" + \"action type. The initial state may not be undefined, but can be null.\");\n    }\n  });\n}\n/**\n * Turns an object whose values are different reducer functions, into a single\n * reducer function. It will call every child reducer, and gather their results\n * into a single state object, whose keys correspond to the keys of the passed\n * reducer functions.\n *\n * @param {Object} reducers An object whose values correspond to different\n * reducer functions that need to be combined into one. One handy way to obtain\n * it is to use ES6 `import * as reducers` syntax. The reducers may never return\n * undefined for any action. Instead, they should return their initial state\n * if the state passed to them was undefined, and the current state for any\n * unrecognized action.\n *\n * @returns {Function} A reducer function that invokes every reducer inside the\n * passed object, and builds a state object with the same shape.\n */\n\nfunction combineReducers(reducers) {\n  var reducerKeys = Object.keys(reducers);\n  var finalReducers = {};\n\n  for (var i = 0; i < reducerKeys.length; i++) {\n    var key = reducerKeys[i];\n\n    if (false) {\n      if (typeof reducers[key] === 'undefined') {\n        warning(\"No reducer provided for key \\\"\" + key + \"\\\"\");\n      }\n    }\n\n    if (typeof reducers[key] === 'function') {\n      finalReducers[key] = reducers[key];\n    }\n  }\n\n  var finalReducerKeys = Object.keys(finalReducers);\n  var unexpectedKeyCache;\n\n  if (false) {\n    unexpectedKeyCache = {};\n  }\n\n  var shapeAssertionError;\n\n  try {\n    assertReducerShape(finalReducers);\n  } catch (e) {\n    shapeAssertionError = e;\n  }\n\n  return function combination(state, action) {\n    if (state === void 0) {\n      state = {};\n    }\n\n    if (shapeAssertionError) {\n      throw shapeAssertionError;\n    }\n\n    if (false) {\n      var warningMessage = getUnexpectedStateShapeWarningMessage(state, finalReducers, action, unexpectedKeyCache);\n\n      if (warningMessage) {\n        warning(warningMessage);\n      }\n    }\n\n    var hasChanged = false;\n    var nextState = {};\n\n    for (var _i = 0; _i < finalReducerKeys.length; _i++) {\n      var _key = finalReducerKeys[_i];\n      var reducer = finalReducers[_key];\n      var previousStateForKey = state[_key];\n      var nextStateForKey = reducer(previousStateForKey, action);\n\n      if (typeof nextStateForKey === 'undefined') {\n        var errorMessage = getUndefinedStateErrorMessage(_key, action);\n        throw new Error(errorMessage);\n      }\n\n      nextState[_key] = nextStateForKey;\n      hasChanged = hasChanged || nextStateForKey !== previousStateForKey;\n    }\n\n    return hasChanged ? nextState : state;\n  };\n}\n\nfunction bindActionCreator(actionCreator, dispatch) {\n  return function () {\n    return dispatch(actionCreator.apply(this, arguments));\n  };\n}\n/**\n * Turns an object whose values are action creators, into an object with the\n * same keys, but with every function wrapped into a `dispatch` call so they\n * may be invoked directly. This is just a convenience method, as you can call\n * `store.dispatch(MyActionCreators.doSomething())` yourself just fine.\n *\n * For convenience, you can also pass a single function as the first argument,\n * and get a function in return.\n *\n * @param {Function|Object} actionCreators An object whose values are action\n * creator functions. One handy way to obtain it is to use ES6 `import * as`\n * syntax. You may also pass a single function.\n *\n * @param {Function} dispatch The `dispatch` function available on your Redux\n * store.\n *\n * @returns {Function|Object} The object mimicking the original object, but with\n * every action creator wrapped into the `dispatch` call. If you passed a\n * function as `actionCreators`, the return value will also be a single\n * function.\n */\n\nfunction bindActionCreators(actionCreators, dispatch) {\n  if (typeof actionCreators === 'function') {\n    return bindActionCreator(actionCreators, dispatch);\n  }\n\n  if (typeof actionCreators !== 'object' || actionCreators === null) {\n    throw new Error(\"bindActionCreators expected an object or a function, instead received \" + (actionCreators === null ? 'null' : typeof actionCreators) + \". \" + \"Did you write \\\"import ActionCreators from\\\" instead of \\\"import * as ActionCreators from\\\"?\");\n  }\n\n  var keys = Object.keys(actionCreators);\n  var boundActionCreators = {};\n\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var actionCreator = actionCreators[key];\n\n    if (typeof actionCreator === 'function') {\n      boundActionCreators[key] = bindActionCreator(actionCreator, dispatch);\n    }\n  }\n\n  return boundActionCreators;\n}\n\nfunction _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}\n\nfunction _objectSpread(target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i] != null ? arguments[i] : {};\n    var ownKeys = Object.keys(source);\n\n    if (typeof Object.getOwnPropertySymbols === 'function') {\n      ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {\n        return Object.getOwnPropertyDescriptor(source, sym).enumerable;\n      }));\n    }\n\n    ownKeys.forEach(function (key) {\n      _defineProperty(target, key, source[key]);\n    });\n  }\n\n  return target;\n}\n\n/**\n * Composes single-argument functions from right to left. The rightmost\n * function can take multiple arguments as it provides the signature for\n * the resulting composite function.\n *\n * @param {...Function} funcs The functions to compose.\n * @returns {Function} A function obtained by composing the argument functions\n * from right to left. For example, compose(f, g, h) is identical to doing\n * (...args) => f(g(h(...args))).\n */\nfunction compose() {\n  for (var _len = arguments.length, funcs = new Array(_len), _key = 0; _key < _len; _key++) {\n    funcs[_key] = arguments[_key];\n  }\n\n  if (funcs.length === 0) {\n    return function (arg) {\n      return arg;\n    };\n  }\n\n  if (funcs.length === 1) {\n    return funcs[0];\n  }\n\n  return funcs.reduce(function (a, b) {\n    return function () {\n      return a(b.apply(void 0, arguments));\n    };\n  });\n}\n\n/**\n * Creates a store enhancer that applies middleware to the dispatch method\n * of the Redux store. This is handy for a variety of tasks, such as expressing\n * asynchronous actions in a concise manner, or logging every action payload.\n *\n * See `redux-thunk` package as an example of the Redux middleware.\n *\n * Because middleware is potentially asynchronous, this should be the first\n * store enhancer in the composition chain.\n *\n * Note that each middleware will be given the `dispatch` and `getState` functions\n * as named arguments.\n *\n * @param {...Function} middlewares The middleware chain to be applied.\n * @returns {Function} A store enhancer applying the middleware.\n */\n\nfunction applyMiddleware() {\n  for (var _len = arguments.length, middlewares = new Array(_len), _key = 0; _key < _len; _key++) {\n    middlewares[_key] = arguments[_key];\n  }\n\n  return function (createStore) {\n    return function () {\n      var store = createStore.apply(void 0, arguments);\n\n      var _dispatch = function dispatch() {\n        throw new Error(\"Dispatching while constructing your middleware is not allowed. \" + \"Other middleware would not be applied to this dispatch.\");\n      };\n\n      var middlewareAPI = {\n        getState: store.getState,\n        dispatch: function dispatch() {\n          return _dispatch.apply(void 0, arguments);\n        }\n      };\n      var chain = middlewares.map(function (middleware) {\n        return middleware(middlewareAPI);\n      });\n      _dispatch = compose.apply(void 0, chain)(store.dispatch);\n      return _objectSpread({}, store, {\n        dispatch: _dispatch\n      });\n    };\n  };\n}\n\n/*\n * This is a dummy function to check if the function name has been altered by minification.\n * If the function has been minified and NODE_ENV !== 'production', warn the user.\n */\n\nfunction isCrushed() {}\n\nif (false) {\n  warning('You are currently using minified code outside of NODE_ENV === \"production\". ' + 'This means that you are running a slower development build of Redux. ' + 'You can use loose-envify (https://github.com/zertosh/loose-envify) for browserify ' + 'or setting mode to production in webpack (https://webpack.js.org/concepts/mode/) ' + 'to ensure you have the correct code for your production build.');\n}\n\n\n\n/***/ }),\n\n/***/ \"aqQ4\":\n/***/ (function(module, exports) {\n\n// removed by extract-text-webpack-plugin\n\n/***/ }),\n\n/***/ \"b9XL\":\n/***/ (function(module, exports) {\n\nfunction _typeof2(obj) {\n  if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n    _typeof2 = function _typeof2(obj) {\n      return typeof obj;\n    };\n  } else {\n    _typeof2 = function _typeof2(obj) {\n      return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n    };\n  }return _typeof2(obj);\n}\n\nfunction _typeof(obj) {\n  if (typeof Symbol === \"function\" && _typeof2(Symbol.iterator) === \"symbol\") {\n    module.exports = _typeof = function _typeof(obj) {\n      return _typeof2(obj);\n    };\n  } else {\n    module.exports = _typeof = function _typeof(obj) {\n      return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : _typeof2(obj);\n    };\n  }\n\n  return _typeof(obj);\n}\n\nmodule.exports = _typeof;\n\n/***/ }),\n\n/***/ \"cY2B\":\n/***/ (function(module, exports) {\n\n// IE 8- don't enum bug keys\nmodule.exports = 'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'.split(',');\n\n/***/ }),\n\n/***/ \"cb3v\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar anObject = __webpack_require__(\"Aoj9\");\nvar IE8_DOM_DEFINE = __webpack_require__(\"d44f\");\nvar toPrimitive = __webpack_require__(\"YBFa\");\nvar dP = Object.defineProperty;\n\nexports.f = __webpack_require__(\"Luod\") ? Object.defineProperty : function defineProperty(O, P, Attributes) {\n  anObject(O);\n  P = toPrimitive(P, true);\n  anObject(Attributes);\n  if (IE8_DOM_DEFINE) try {\n    return dP(O, P, Attributes);\n  } catch (e) {/* empty */}\n  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');\n  if ('value' in Attributes) O[P] = Attributes.value;\n  return O;\n};\n\n/***/ }),\n\n/***/ \"cpTA\":\n/***/ (function(module, exports) {\n\n(function (self) {\n  'use strict';\n\n  if (self.fetch) {\n    return;\n  }\n\n  var support = {\n    searchParams: 'URLSearchParams' in self,\n    iterable: 'Symbol' in self && 'iterator' in Symbol,\n    blob: 'FileReader' in self && 'Blob' in self && function () {\n      try {\n        new Blob();\n        return true;\n      } catch (e) {\n        return false;\n      }\n    }(),\n    formData: 'FormData' in self,\n    arrayBuffer: 'ArrayBuffer' in self\n  };\n\n  if (support.arrayBuffer) {\n    var viewClasses = ['[object Int8Array]', '[object Uint8Array]', '[object Uint8ClampedArray]', '[object Int16Array]', '[object Uint16Array]', '[object Int32Array]', '[object Uint32Array]', '[object Float32Array]', '[object Float64Array]'];\n\n    var isDataView = function isDataView(obj) {\n      return obj && DataView.prototype.isPrototypeOf(obj);\n    };\n\n    var isArrayBufferView = ArrayBuffer.isView || function (obj) {\n      return obj && viewClasses.indexOf(Object.prototype.toString.call(obj)) > -1;\n    };\n  }\n\n  function normalizeName(name) {\n    if (typeof name !== 'string') {\n      name = String(name);\n    }\n    if (/[^a-z0-9\\-#$%&'*+.\\^_`|~]/i.test(name)) {\n      throw new TypeError('Invalid character in header field name');\n    }\n    return name.toLowerCase();\n  }\n\n  function normalizeValue(value) {\n    if (typeof value !== 'string') {\n      value = String(value);\n    }\n    return value;\n  }\n\n  // Build a destructive iterator for the value list\n  function iteratorFor(items) {\n    var iterator = {\n      next: function next() {\n        var value = items.shift();\n        return { done: value === undefined, value: value };\n      }\n    };\n\n    if (support.iterable) {\n      iterator[Symbol.iterator] = function () {\n        return iterator;\n      };\n    }\n\n    return iterator;\n  }\n\n  function Headers(headers) {\n    this.map = {};\n\n    if (headers instanceof Headers) {\n      headers.forEach(function (value, name) {\n        this.append(name, value);\n      }, this);\n    } else if (Array.isArray(headers)) {\n      headers.forEach(function (header) {\n        this.append(header[0], header[1]);\n      }, this);\n    } else if (headers) {\n      Object.getOwnPropertyNames(headers).forEach(function (name) {\n        this.append(name, headers[name]);\n      }, this);\n    }\n  }\n\n  Headers.prototype.append = function (name, value) {\n    name = normalizeName(name);\n    value = normalizeValue(value);\n    var oldValue = this.map[name];\n    this.map[name] = oldValue ? oldValue + ',' + value : value;\n  };\n\n  Headers.prototype['delete'] = function (name) {\n    delete this.map[normalizeName(name)];\n  };\n\n  Headers.prototype.get = function (name) {\n    name = normalizeName(name);\n    return this.has(name) ? this.map[name] : null;\n  };\n\n  Headers.prototype.has = function (name) {\n    return this.map.hasOwnProperty(normalizeName(name));\n  };\n\n  Headers.prototype.set = function (name, value) {\n    this.map[normalizeName(name)] = normalizeValue(value);\n  };\n\n  Headers.prototype.forEach = function (callback, thisArg) {\n    for (var name in this.map) {\n      if (this.map.hasOwnProperty(name)) {\n        callback.call(thisArg, this.map[name], name, this);\n      }\n    }\n  };\n\n  Headers.prototype.keys = function () {\n    var items = [];\n    this.forEach(function (value, name) {\n      items.push(name);\n    });\n    return iteratorFor(items);\n  };\n\n  Headers.prototype.values = function () {\n    var items = [];\n    this.forEach(function (value) {\n      items.push(value);\n    });\n    return iteratorFor(items);\n  };\n\n  Headers.prototype.entries = function () {\n    var items = [];\n    this.forEach(function (value, name) {\n      items.push([name, value]);\n    });\n    return iteratorFor(items);\n  };\n\n  if (support.iterable) {\n    Headers.prototype[Symbol.iterator] = Headers.prototype.entries;\n  }\n\n  function consumed(body) {\n    if (body.bodyUsed) {\n      return Promise.reject(new TypeError('Already read'));\n    }\n    body.bodyUsed = true;\n  }\n\n  function fileReaderReady(reader) {\n    return new Promise(function (resolve, reject) {\n      reader.onload = function () {\n        resolve(reader.result);\n      };\n      reader.onerror = function () {\n        reject(reader.error);\n      };\n    });\n  }\n\n  function readBlobAsArrayBuffer(blob) {\n    var reader = new FileReader();\n    var promise = fileReaderReady(reader);\n    reader.readAsArrayBuffer(blob);\n    return promise;\n  }\n\n  function readBlobAsText(blob) {\n    var reader = new FileReader();\n    var promise = fileReaderReady(reader);\n    reader.readAsText(blob);\n    return promise;\n  }\n\n  function readArrayBufferAsText(buf) {\n    var view = new Uint8Array(buf);\n    var chars = new Array(view.length);\n\n    for (var i = 0; i < view.length; i++) {\n      chars[i] = String.fromCharCode(view[i]);\n    }\n    return chars.join('');\n  }\n\n  function bufferClone(buf) {\n    if (buf.slice) {\n      return buf.slice(0);\n    } else {\n      var view = new Uint8Array(buf.byteLength);\n      view.set(new Uint8Array(buf));\n      return view.buffer;\n    }\n  }\n\n  function Body() {\n    this.bodyUsed = false;\n\n    this._initBody = function (body) {\n      this._bodyInit = body;\n      if (!body) {\n        this._bodyText = '';\n      } else if (typeof body === 'string') {\n        this._bodyText = body;\n      } else if (support.blob && Blob.prototype.isPrototypeOf(body)) {\n        this._bodyBlob = body;\n      } else if (support.formData && FormData.prototype.isPrototypeOf(body)) {\n        this._bodyFormData = body;\n      } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {\n        this._bodyText = body.toString();\n      } else if (support.arrayBuffer && support.blob && isDataView(body)) {\n        this._bodyArrayBuffer = bufferClone(body.buffer);\n        // IE 10-11 can't handle a DataView body.\n        this._bodyInit = new Blob([this._bodyArrayBuffer]);\n      } else if (support.arrayBuffer && (ArrayBuffer.prototype.isPrototypeOf(body) || isArrayBufferView(body))) {\n        this._bodyArrayBuffer = bufferClone(body);\n      } else {\n        throw new Error('unsupported BodyInit type');\n      }\n\n      if (!this.headers.get('content-type')) {\n        if (typeof body === 'string') {\n          this.headers.set('content-type', 'text/plain;charset=UTF-8');\n        } else if 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consumed(this) || Promise.resolve(this._bodyArrayBuffer);\n        } else {\n          return this.blob().then(readBlobAsArrayBuffer);\n        }\n      };\n    }\n\n    this.text = function () {\n      var rejected = consumed(this);\n      if (rejected) {\n        return rejected;\n      }\n\n      if (this._bodyBlob) {\n        return readBlobAsText(this._bodyBlob);\n      } else if (this._bodyArrayBuffer) {\n        return Promise.resolve(readArrayBufferAsText(this._bodyArrayBuffer));\n      } else if (this._bodyFormData) {\n        throw new Error('could not read FormData body as text');\n      } else {\n        return Promise.resolve(this._bodyText);\n      }\n    };\n\n    if (support.formData) {\n      this.formData = function () {\n        return this.text().then(decode);\n      };\n    }\n\n    this.json = function () {\n      return this.text().then(JSON.parse);\n    };\n\n    return this;\n  }\n\n  // HTTP methods whose capitalization should be normalized\n  var methods = ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST', 'PUT'];\n\n  function normalizeMethod(method) {\n    var upcased = method.toUpperCase();\n    return methods.indexOf(upcased) > -1 ? upcased : method;\n  }\n\n  function Request(input, options) {\n    options = options || {};\n    var body = options.body;\n\n    if (input instanceof Request) {\n      if (input.bodyUsed) {\n        throw new TypeError('Already read');\n      }\n      this.url = input.url;\n      this.credentials = input.credentials;\n      if (!options.headers) {\n        this.headers = new Headers(input.headers);\n      }\n      this.method = input.method;\n      this.mode = input.mode;\n      if (!body && input._bodyInit != null) {\n        body = input._bodyInit;\n        input.bodyUsed = true;\n      }\n    } else {\n      this.url = String(input);\n    }\n\n    this.credentials = options.credentials || this.credentials || 'omit';\n    if (options.headers || !this.headers) {\n      this.headers = new Headers(options.headers);\n    }\n    this.method = normalizeMethod(options.method || this.method || 'GET');\n    this.mode = options.mode || this.mode || null;\n    this.referrer = null;\n\n    if ((this.method === 'GET' || this.method === 'HEAD') && body) {\n      throw new TypeError('Body not allowed for GET or HEAD requests');\n    }\n    this._initBody(body);\n  }\n\n  Request.prototype.clone = function () {\n    return new Request(this, { body: this._bodyInit });\n  };\n\n  function decode(body) {\n    var form = new FormData();\n    body.trim().split('&').forEach(function (bytes) {\n      if (bytes) {\n        var split = bytes.split('=');\n        var name = split.shift().replace(/\\+/g, ' ');\n        var value = split.join('=').replace(/\\+/g, ' ');\n        form.append(decodeURIComponent(name), decodeURIComponent(value));\n      }\n    });\n    return form;\n  }\n\n  function parseHeaders(rawHeaders) {\n    var headers = new Headers();\n    // Replace instances of \\r\\n and \\n followed by at least one space or horizontal tab with a space\n    // https://tools.ietf.org/html/rfc7230#section-3.2\n    var preProcessedHeaders = rawHeaders.replace(/\\r?\\n[\\t ]+/g, ' ');\n    preProcessedHeaders.split(/\\r?\\n/).forEach(function (line) {\n      var parts = line.split(':');\n      var key = parts.shift().trim();\n      if (key) {\n        var value = parts.join(':').trim();\n        headers.append(key, value);\n      }\n    });\n    return headers;\n  }\n\n  Body.call(Request.prototype);\n\n  function Response(bodyInit, options) {\n    if (!options) {\n      options = {};\n    }\n\n    this.type = 'default';\n    this.status = options.status === undefined ? 200 : options.status;\n    this.ok = this.status >= 200 && this.status < 300;\n    this.statusText = 'statusText' in options ? options.statusText : 'OK';\n    this.headers = new Headers(options.headers);\n    this.url = options.url || '';\n    this._initBody(bodyInit);\n  }\n\n  Body.call(Response.prototype);\n\n  Response.prototype.clone = function () {\n    return new Response(this._bodyInit, {\n      status: this.status,\n      statusText: this.statusText,\n      headers: new Headers(this.headers),\n      url: this.url\n    });\n  };\n\n  Response.error = function () {\n    var response = new Response(null, { status: 0, statusText: '' });\n    response.type = 'error';\n    return response;\n  };\n\n  var redirectStatuses = [301, 302, 303, 307, 308];\n\n  Response.redirect = function (url, status) {\n    if (redirectStatuses.indexOf(status) === -1) {\n      throw new RangeError('Invalid status code');\n    }\n\n    return new Response(null, { status: status, headers: { location: url } });\n  };\n\n  self.Headers = Headers;\n  self.Request = Request;\n  self.Response = Response;\n\n  self.fetch = function (input, init) {\n    return new Promise(function (resolve, reject) {\n      var request = new Request(input, init);\n      var xhr = new XMLHttpRequest();\n\n      xhr.onload = function () {\n        var options = {\n          status: xhr.status,\n          statusText: xhr.statusText,\n          headers: parseHeaders(xhr.getAllResponseHeaders() || '')\n        };\n        options.url = 'responseURL' in xhr ? xhr.responseURL : options.headers.get('X-Request-URL');\n        var body = 'response' in xhr ? xhr.response : xhr.responseText;\n        resolve(new Response(body, options));\n      };\n\n      xhr.onerror = function () {\n        reject(new TypeError('Network request failed'));\n      };\n\n      xhr.ontimeout = function () {\n        reject(new TypeError('Network request failed'));\n      };\n\n      xhr.open(request.method, request.url, true);\n\n      if (request.credentials === 'include') {\n        xhr.withCredentials = true;\n      } else if (request.credentials === 'omit') {\n        xhr.withCredentials = false;\n      }\n\n      if ('responseType' in xhr && support.blob) {\n        xhr.responseType = 'blob';\n      }\n\n      request.headers.forEach(function (value, name) {\n        xhr.setRequestHeader(name, value);\n      });\n\n      xhr.send(typeof request._bodyInit === 'undefined' ? null : request._bodyInit);\n    });\n  };\n  self.fetch.polyfill = true;\n})(typeof self !== 'undefined' ? self : this);\n\n/***/ }),\n\n/***/ \"d44f\":\n/***/ (function(module, exports, __webpack_require__) {\n\nmodule.exports = !__webpack_require__(\"Luod\") && !__webpack_require__(\"xvHV\")(function () {\n  return Object.defineProperty(__webpack_require__(\"mns5\")('div'), 'a', { get: function get() {\n      return 7;\n    } }).a != 7;\n});\n\n/***/ }),\n\n/***/ \"d4H2\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar setPrototypeOf = __webpack_require__(\"AkAO\");\n\nfunction _inherits(subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function\");\n  }\n\n  subClass.prototype = Object.create(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) setPrototypeOf(subClass, superClass);\n}\n\nmodule.exports = _inherits;\n\n/***/ }),\n\n/***/ \"dP58\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n/* WEBPACK VAR INJECTION */(function(global) {\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nvar util = __webpack_require__(\"58xA\");\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\nvar contains = function contains(obj, key) {\n    return Object.prototype.hasOwnProperty.call(obj, key);\n};\nvar DEFAULT_ENTRY_NAME = '[DEFAULT]';\n// An array to capture listeners before the true auth functions\n// exist\nvar tokenListeners = [];\n/**\r\n * Global context object for a collection of services using\r\n * a shared authentication state.\r\n */\nvar FirebaseAppImpl = /** @class */function () {\n    function FirebaseAppImpl(options, config, firebase_) {\n        this.firebase_ = firebase_;\n        this.isDeleted_ = false;\n        this.services_ = {};\n        this.name_ = config.name;\n        this._automaticDataCollectionEnabled = config.automaticDataCollectionEnabled || false;\n        this.options_ = util.deepCopy(options);\n        this.INTERNAL = {\n            getUid: function getUid() {\n                return null;\n            },\n            getToken: function getToken() {\n                return Promise.resolve(null);\n            },\n            addAuthTokenListener: function addAuthTokenListener(callback) {\n                tokenListeners.push(callback);\n                // Make sure callback is called, asynchronously, in the absence of the auth module\n                setTimeout(function () {\n                    return callback(null);\n                }, 0);\n            },\n            removeAuthTokenListener: function removeAuthTokenListener(callback) {\n                tokenListeners = tokenListeners.filter(function (listener) {\n                    return listener !== callback;\n                });\n            }\n        };\n    }\n    Object.defineProperty(FirebaseAppImpl.prototype, \"automaticDataCollectionEnabled\", {\n        get: function get() {\n            this.checkDestroyed_();\n            return this._automaticDataCollectionEnabled;\n        },\n        set: function set(val) {\n            this.checkDestroyed_();\n            this._automaticDataCollectionEnabled = val;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(FirebaseAppImpl.prototype, \"name\", {\n        get: function get() {\n            this.checkDestroyed_();\n            return this.name_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    Object.defineProperty(FirebaseAppImpl.prototype, \"options\", {\n        get: function get() {\n            this.checkDestroyed_();\n            return this.options_;\n        },\n        enumerable: true,\n        configurable: true\n    });\n    FirebaseAppImpl.prototype.delete = function () {\n        var _this = this;\n        return new Promise(function (resolve) {\n            _this.checkDestroyed_();\n            resolve();\n        }).then(function () {\n            _this.firebase_.INTERNAL.removeApp(_this.name_);\n            var services = [];\n            Object.keys(_this.services_).forEach(function (serviceKey) {\n                Object.keys(_this.services_[serviceKey]).forEach(function (instanceKey) {\n                    services.push(_this.services_[serviceKey][instanceKey]);\n                });\n            });\n            return Promise.all(services.map(function (service) {\n                return service.INTERNAL.delete();\n            }));\n        }).then(function () {\n            _this.isDeleted_ = true;\n            _this.services_ = {};\n        });\n    };\n    /**\r\n     * Return a service instance associated with this app (creating it\r\n     * on demand), identified by the passed instanceIdentifier.\r\n     *\r\n     * NOTE: Currently storage is the only one that is leveraging this\r\n     * functionality. They invoke it by calling:\r\n     *\r\n     * ```javascript\r\n     * firebase.app().storage('STORAGE BUCKET ID')\r\n     * ```\r\n     *\r\n     * The service name is passed to this already\r\n     * @internal\r\n     */\n    FirebaseAppImpl.prototype._getService = function (name, instanceIdentifier) {\n        if (instanceIdentifier === void 0) {\n            instanceIdentifier = DEFAULT_ENTRY_NAME;\n        }\n        this.checkDestroyed_();\n        if (!this.services_[name]) {\n            this.services_[name] = {};\n        }\n        if (!this.services_[name][instanceIdentifier]) {\n            /**\r\n             * If a custom instance has been defined (i.e. not '[DEFAULT]')\r\n             * then we will pass that instance on, otherwise we pass `null`\r\n             */\n            var instanceSpecifier = instanceIdentifier !== DEFAULT_ENTRY_NAME ? instanceIdentifier : undefined;\n            var service = this.firebase_.INTERNAL.factories[name](this, this.extendApp.bind(this), instanceSpecifier);\n            this.services_[name][instanceIdentifier] = service;\n        }\n        return this.services_[name][instanceIdentifier];\n    };\n    /**\r\n     * Callback function used to extend an App instance at the time\r\n     * of service instance creation.\r\n     */\n    FirebaseAppImpl.prototype.extendApp = function (props) {\n        var _this = this;\n        // Copy the object onto the FirebaseAppImpl prototype\n        util.deepExtend(this, props);\n        /**\r\n         * If the app has overwritten the addAuthTokenListener stub, forward\r\n         * the active token listeners on to the true fxn.\r\n         *\r\n         * TODO: This function is required due to our current module\r\n         * structure. Once we are able to rely strictly upon a single module\r\n         * implementation, this code should be refactored and Auth should\r\n         * provide these stubs and the upgrade logic\r\n         */\n        if (props.INTERNAL && props.INTERNAL.addAuthTokenListener) {\n            tokenListeners.forEach(function (listener) {\n                _this.INTERNAL.addAuthTokenListener(listener);\n            });\n            tokenListeners = [];\n        }\n    };\n    /**\r\n     * This function will throw an Error if the App has already been deleted -\r\n     * use before performing API actions on the App.\r\n     */\n    FirebaseAppImpl.prototype.checkDestroyed_ = function () {\n        if (this.isDeleted_) {\n            error('app-deleted', { name: this.name_ });\n        }\n    };\n    return FirebaseAppImpl;\n}();\n// Prevent dead-code elimination of these methods w/o invalid property\n// copying.\nFirebaseAppImpl.prototype.name && FirebaseAppImpl.prototype.options || FirebaseAppImpl.prototype.delete || console.log('dc');\n/**\r\n * Return a firebase namespace object.\r\n *\r\n * In production, this will be called exactly once and the result\r\n * assigned to the 'firebase' global.  It may be called multiple times\r\n * in unit tests.\r\n */\nfunction createFirebaseNamespace() {\n    var apps_ = {};\n    var factories = {};\n    var appHooks = {};\n    // A namespace is a plain JavaScript Object.\n    var namespace = {\n        // Hack to prevent Babel from modifying the object returned\n        // as the firebase namespace.\n        __esModule: true,\n        initializeApp: initializeApp,\n        app: app,\n        apps: null,\n        Promise: Promise,\n        SDK_VERSION: '5.8.6',\n        INTERNAL: {\n            registerService: registerService,\n            createFirebaseNamespace: createFirebaseNamespace,\n            extendNamespace: extendNamespace,\n            createSubscribe: util.createSubscribe,\n            ErrorFactory: util.ErrorFactory,\n            removeApp: removeApp,\n            factories: factories,\n            useAsService: useAsService,\n            Promise: Promise,\n            deepExtend: util.deepExtend\n        }\n    };\n    // Inject a circular default export to allow Babel users who were previously\n    // using:\n    //\n    //   import firebase from 'firebase';\n    //   which becomes: var firebase = require('firebase').default;\n    //\n    // instead of\n    //\n    //   import * as firebase from 'firebase';\n    //   which becomes: var firebase = require('firebase');\n    util.patchProperty(namespace, 'default', namespace);\n    // firebase.apps is a read-only getter.\n    Object.defineProperty(namespace, 'apps', {\n        get: getApps\n    });\n    /**\r\n     * Called by App.delete() - but before any services associated with the App\r\n     * are deleted.\r\n     */\n    function removeApp(name) {\n        var app = apps_[name];\n        callAppHooks(app, 'delete');\n        delete apps_[name];\n    }\n    /**\r\n     * Get the App object for a given name (or DEFAULT).\r\n     */\n    function app(name) {\n        name = name || DEFAULT_ENTRY_NAME;\n        if (!contains(apps_, name)) {\n            error('no-app', { name: name });\n        }\n        return apps_[name];\n    }\n    util.patchProperty(app, 'App', FirebaseAppImpl);\n    function initializeApp(options, rawConfig) {\n        if (rawConfig === void 0) {\n            rawConfig = {};\n        }\n        if (typeof rawConfig !== 'object' || rawConfig === null) {\n            var name_1 = rawConfig;\n            rawConfig = { name: name_1 };\n        }\n        var config = rawConfig;\n        if (config.name === undefined) {\n            config.name = DEFAULT_ENTRY_NAME;\n        }\n        var name = config.name;\n        if (typeof name !== 'string' || !name) {\n            error('bad-app-name', { name: name + '' });\n        }\n        if (contains(apps_, name)) {\n            error('duplicate-app', { name: name });\n        }\n        var app = new FirebaseAppImpl(options, config, namespace);\n        apps_[name] = app;\n        callAppHooks(app, 'create');\n        return app;\n    }\n    /*\r\n     * Return an array of all the non-deleted FirebaseApps.\r\n     */\n    function getApps() {\n        // Make a copy so caller cannot mutate the apps list.\n        return Object.keys(apps_).map(function (name) {\n            return apps_[name];\n        });\n    }\n    /*\r\n     * Register a Firebase Service.\r\n     *\r\n     * firebase.INTERNAL.registerService()\r\n     *\r\n     * TODO: Implement serviceProperties.\r\n     */\n    function registerService(name, createService, serviceProperties, appHook, allowMultipleInstances) {\n        // Cannot re-register a service that already exists\n        if (factories[name]) {\n            error('duplicate-service', { name: name });\n        }\n        // Capture the service factory for later service instantiation\n        factories[name] = createService;\n        // Capture the appHook, if passed\n        if (appHook) {\n            appHooks[name] = appHook;\n            // Run the **new** app hook on all existing apps\n            getApps().forEach(function (app) {\n                appHook('create', app);\n            });\n        }\n        // The Service namespace is an accessor function ...\n        var serviceNamespace = function serviceNamespace(appArg) {\n            if (appArg === void 0) {\n                appArg = app();\n            }\n            if (typeof appArg[name] !== 'function') {\n                // Invalid argument.\n                // This happens in the following case: firebase.storage('gs:/')\n                error('invalid-app-argument', { name: name });\n            }\n            // Forward service instance lookup to the FirebaseApp.\n            return appArg[name]();\n        };\n        // ... and a container for service-level properties.\n        if (serviceProperties !== undefined) {\n            util.deepExtend(serviceNamespace, serviceProperties);\n        }\n        // Monkey-patch the serviceNamespace onto the firebase namespace\n        namespace[name] = serviceNamespace;\n        // Patch the FirebaseAppImpl prototype\n        FirebaseAppImpl.prototype[name] = function () {\n            var args = [];\n            for (var _i = 0; _i < arguments.length; _i++) {\n                args[_i] = arguments[_i];\n            }\n            var serviceFxn = this._getService.bind(this, name);\n            return serviceFxn.apply(this, allowMultipleInstances ? args : []);\n        };\n        return serviceNamespace;\n    }\n    /**\r\n     * Patch the top-level firebase namespace with additional properties.\r\n     *\r\n     * firebase.INTERNAL.extendNamespace()\r\n     */\n    function extendNamespace(props) {\n        util.deepExtend(namespace, props);\n    }\n    function callAppHooks(app, eventName) {\n        Object.keys(factories).forEach(function (serviceName) {\n            // Ignore virtual services\n            var factoryName = useAsService(app, serviceName);\n            if (factoryName === null) {\n                return;\n            }\n            if (appHooks[factoryName]) {\n                appHooks[factoryName](eventName, app);\n            }\n        });\n    }\n    // Map the requested service to a registered service name\n    // (used to map auth to serverAuth service when needed).\n    function useAsService(app, name) {\n        if (name === 'serverAuth') {\n            return null;\n        }\n        var useService = name;\n        var options = app.options;\n        return useService;\n    }\n    return namespace;\n}\nfunction error(code, args) {\n    throw appErrors.create(code, args);\n}\n// TypeScript does not support non-string indexes!\n// let errors: {[code: AppError: string} = {\nvar errors = {\n    'no-app': \"No Firebase App '{$name}' has been created - \" + 'call Firebase App.initializeApp()',\n    'bad-app-name': \"Illegal App name: '{$name}\",\n    'duplicate-app': \"Firebase App named '{$name}' already exists\",\n    'app-deleted': \"Firebase App named '{$name}' already deleted\",\n    'duplicate-service': \"Firebase service named '{$name}' already registered\",\n    'sa-not-supported': 'Initializing the Firebase SDK with a service ' + 'account is only allowed in a Node.js environment. On client ' + 'devices, you should instead initialize the SDK with an api key and ' + 'auth domain',\n    'invalid-app-argument': 'firebase.{$name}() takes either no argument or a ' + 'Firebase App instance.'\n};\nvar appErrors = new util.ErrorFactory('app', 'Firebase', errors);\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n// Node detection logic from: https://github.com/iliakan/detect-node/\nvar isNode = false;\ntry {\n    isNode = Object.prototype.toString.call(global.process) === '[object process]';\n} catch (e) {}\nisNode && console.warn(\"\\nWarning: This is a browser-targeted Firebase bundle but it appears it is being\\nrun in a Node environment.  If running in a Node environment, make sure you\\nare using the bundle specified by the \\\"main\\\" field in package.json.\\n\\nIf you are using Webpack, you can specify \\\"main\\\" as the first item in\\n\\\"resolve.mainFields\\\":\\nhttps://webpack.js.org/configuration/resolve/#resolvemainfields\\n\\nIf using Rollup, use the rollup-plugin-node-resolve plugin and set \\\"module\\\"\\nto false and \\\"main\\\" to true:\\nhttps://github.com/rollup/rollup-plugin-node-resolve\\n\");\nvar firebase = createFirebaseNamespace();\n\nexports.firebase = firebase;\nexports.default = firebase;\n/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(\"Mhc0\")))\n\n/***/ }),\n\n/***/ \"dpY+\":\n/***/ (function(module, exports) {\n\nexports.f = Object.getOwnPropertySymbols;\n\n/***/ }),\n\n/***/ \"eILw\":\n/***/ (function(module, exports, __webpack_require__) {\n\n__webpack_require__(\"xHqp\");\n__webpack_require__(\"wWX/\");\n__webpack_require__(\"Oi40\");\n__webpack_require__(\"IoD/\");\nmodule.exports = __webpack_require__(\"VT6h\").Symbol;\n\n/***/ }),\n\n/***/ \"fHKL\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar _interopRequireDefault = __webpack_require__(\"SpGf\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.TopAppBar = exports.TopAppBarTitle = exports.TopAppBarIcon = exports.TopAppBarSection = exports.TopAppBarRow = void 0;\n\nvar _get2 = _interopRequireDefault(__webpack_require__(\"J5U+\"));\n\nvar _classCallCheck2 = _interopRequireDefault(__webpack_require__(\"0fcM\"));\n\nvar _createClass2 = _interopRequireDefault(__webpack_require__(\"P8NW\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(__webpack_require__(\"0421\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(__webpack_require__(\"UJE0\"));\n\nvar _inherits2 = _interopRequireDefault(__webpack_require__(\"d4H2\"));\n\nvar _typeof2 = _interopRequireDefault(__webpack_require__(\"b9XL\"));\n\nvar _topAppBar = __webpack_require__(\"NFzA\");\n\nvar _bindDecorator = __webpack_require__(\"gKs0\");\n\nvar _preact = __webpack_require__(\"KM04\");\n\nvar _MaterialComponent6 = _interopRequireDefault(__webpack_require__(\"uc5p\"));\n\nvar __decorate = void 0 && (void 0).__decorate || function (decorators, target, key, desc) {\n  var c = arguments.length,\n      r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc,\n      d;\n  if ((typeof Reflect === \"undefined\" ? \"undefined\" : (0, _typeof2.default)(Reflect)) === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);else for (var i = decorators.length - 1; i >= 0; i--) {\n    if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n  }\n  return c > 3 && r && Object.defineProperty(target, key, r), r;\n};\n\nvar TopAppBarRow =\n/*#__PURE__*/\nfunction (_MaterialComponent) {\n  (0, _inherits2.default)(TopAppBarRow, _MaterialComponent);\n\n  function TopAppBarRow() {\n    var _this;\n\n    (0, _classCallCheck2.default)(this, TopAppBarRow);\n    _this = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarRow).apply(this, arguments));\n    _this.componentName = 'top-app-bar__row';\n    _this.mdcProps = [];\n    return _this;\n  }\n\n  (0, _createClass2.default)(TopAppBarRow, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"div\", _extends({}, props), this.props.children);\n    }\n  }]);\n  return TopAppBarRow;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarRow = TopAppBarRow;\n\nvar TopAppBarSection =\n/*#__PURE__*/\nfunction (_MaterialComponent2) {\n  (0, _inherits2.default)(TopAppBarSection, _MaterialComponent2);\n\n  function TopAppBarSection() {\n    var _this2;\n\n    (0, _classCallCheck2.default)(this, TopAppBarSection);\n    _this2 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarSection).apply(this, arguments));\n    _this2.componentName = 'top-app-bar__section';\n    _this2.mdcProps = ['align-start', 'align-end'];\n    return _this2;\n  }\n\n  (0, _createClass2.default)(TopAppBarSection, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"section\", _extends({}, props), props.children);\n    }\n  }]);\n  return TopAppBarSection;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarSection = TopAppBarSection;\n\nvar TopAppBarIcon =\n/*#__PURE__*/\nfunction (_MaterialComponent3) {\n  (0, _inherits2.default)(TopAppBarIcon, _MaterialComponent3);\n\n  function TopAppBarIcon() {\n    var _this3;\n\n    (0, _classCallCheck2.default)(this, TopAppBarIcon);\n    _this3 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarIcon).apply(this, arguments));\n    _this3.componentName = 'top-app-bar__icon';\n    _this3.mdcProps = [];\n    return _this3;\n  }\n\n  (0, _createClass2.default)(TopAppBarIcon, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      var className = props.navigation ? 'material-icons mdc-top-app-bar__navigation-icon' : 'material-icons';\n      return (0, _preact.h)(\"a\", _extends({\n        className: className\n      }, props), props.children);\n    }\n  }]);\n  return TopAppBarIcon;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarIcon = TopAppBarIcon;\n\nvar TopAppBarTitle =\n/*#__PURE__*/\nfunction (_MaterialComponent4) {\n  (0, _inherits2.default)(TopAppBarTitle, _MaterialComponent4);\n\n  function TopAppBarTitle() {\n    var _this4;\n\n    (0, _classCallCheck2.default)(this, TopAppBarTitle);\n    _this4 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarTitle).apply(this, arguments));\n    _this4.componentName = 'top-app-bar__title';\n    _this4.mdcProps = [];\n    return _this4;\n  }\n\n  (0, _createClass2.default)(TopAppBarTitle, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"span\", _extends({}, props), props.children);\n    }\n  }]);\n  return TopAppBarTitle;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarTitle = TopAppBarTitle;\n\nvar TopAppBar =\n/*#__PURE__*/\nfunction (_MaterialComponent5) {\n  (0, _inherits2.default)(TopAppBar, _MaterialComponent5);\n\n  function TopAppBar() {\n    var _this5;\n\n    (0, _classCallCheck2.default)(this, TopAppBar);\n    _this5 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBar).apply(this, arguments));\n    _this5.componentName = 'top-app-bar';\n    _this5.mdcProps = ['short', 'short-collapsed', 'fixed', 'prominent'];\n    return _this5;\n  }\n\n  (0, _createClass2.default)(TopAppBar, [{\n    key: \"componentDidMount\",\n    value: function componentDidMount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(TopAppBar.prototype), \"componentDidMount\", this).call(this);\n\n      if (this.control) {\n        var comp = new _topAppBar.MDCTopAppBar(this.control);\n        comp.listen('MDCTopAppBar:nav', this.onNav);\n        this.MDComponent = comp;\n      }\n    }\n  }, {\n    key: \"componentWillUnmount\",\n    value: function componentWillUnmount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(TopAppBar.prototype), \"componentWillUnmount\", this).call(this);\n\n      if (this.MDComponent) {\n        this.MDComponent.unlisten('MDCTopAppBar:nav', this.onNav);\n        this.MDComponent.destroy();\n      }\n    }\n  }, {\n    key: \"onNav\",\n    value: function onNav(e) {\n      if (this.props.onNav) {\n        this.props.onNav(e);\n      }\n    }\n  }, {\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"header\", _extends({\n        ref: this.setControlRef\n      }, props), props.children);\n    }\n  }]);\n  return TopAppBar;\n}(_MaterialComponent6.default);\n\nexports.TopAppBar = TopAppBar;\n\n__decorate([_bindDecorator.bind], TopAppBar.prototype, \"onNav\", null);\n\nvar default_1 =\n/*#__PURE__*/\nfunction (_TopAppBar) {\n  (0, _inherits2.default)(default_1, _TopAppBar);\n\n  function default_1() {\n    (0, _classCallCheck2.default)(this, default_1);\n    return (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(default_1).apply(this, arguments));\n  }\n\n  return default_1;\n}(TopAppBar);\n\nexports.default = default_1;\ndefault_1.Section = TopAppBarSection;\ndefault_1.Icon = TopAppBarIcon;\ndefault_1.Title = TopAppBarTitle;\ndefault_1.Row = TopAppBarRow;\n//# sourceMappingURL=index.js.map\n\n/***/ }),\n\n/***/ \"foUn\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 22.1.3.31 Array.prototype[@@unscopables]\nvar UNSCOPABLES = __webpack_require__(\"Teay\")('unscopables');\nvar ArrayProto = Array.prototype;\nif (ArrayProto[UNSCOPABLES] == undefined) __webpack_require__(\"viVs\")(ArrayProto, UNSCOPABLES, {});\nmodule.exports = function (key) {\n  ArrayProto[UNSCOPABLES][key] = true;\n};\n\n/***/ }),\n\n/***/ \"gKs0\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", { value: true });\nvar constants;\n(function (constants) {\n    constants.typeOfFunction = 'function';\n    constants.boolTrue = true;\n})(constants || (constants = {}));\nfunction bind(target, propertyKey, descriptor) {\n    if (!descriptor || typeof descriptor.value !== constants.typeOfFunction) {\n        throw new TypeError(\"Only methods can be decorated with @bind. <\" + propertyKey + \"> is not a method!\");\n    }\n    return {\n        configurable: constants.boolTrue,\n        get: function get() {\n            var bound = descriptor.value.bind(this);\n            // Credits to https://github.com/andreypopp/autobind-decorator for memoizing the result of bind against a symbol on the instance.\n            Object.defineProperty(this, propertyKey, {\n                value: bound,\n                configurable: constants.boolTrue,\n                writable: constants.boolTrue\n            });\n            return bound;\n        }\n    };\n}\nexports.bind = bind;\nexports.default = bind;\n\n/***/ }),\n\n/***/ \"h5/D\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)\nvar $keys = __webpack_require__(\"l2U+\");\nvar hiddenKeys = __webpack_require__(\"cY2B\").concat('length', 'prototype');\n\nexports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {\n  return $keys(O, hiddenKeys);\n};\n\n/***/ }),\n\n/***/ \"hOGE\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 7.2.2 IsArray(argument)\nvar cof = __webpack_require__(\"4i3n\");\nmodule.exports = Array.isArray || function isArray(arg) {\n  return cof(arg) == 'Array';\n};\n\n/***/ }),\n\n/***/ \"hywW\":\n/***/ (function(module, exports) {\n\n// 7.2.1 RequireObjectCoercible(argument)\nmodule.exports = function (it) {\n  if (it == undefined) throw TypeError(\"Can't call method on  \" + it);\n  return it;\n};\n\n/***/ }),\n\n/***/ \"hz11\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar pIE = __webpack_require__(\"Nwxm\");\nvar createDesc = __webpack_require__(\"OWuH\");\nvar toIObject = __webpack_require__(\"SFi4\");\nvar toPrimitive = __webpack_require__(\"YBFa\");\nvar has = __webpack_require__(\"5dDi\");\nvar IE8_DOM_DEFINE = __webpack_require__(\"d44f\");\nvar gOPD = Object.getOwnPropertyDescriptor;\n\nexports.f = __webpack_require__(\"Luod\") ? gOPD : function getOwnPropertyDescriptor(O, P) {\n  O = toIObject(O);\n  P = toPrimitive(P, true);\n  if (IE8_DOM_DEFINE) try {\n    return gOPD(O, P);\n  } catch (e) {/* empty */}\n  if (has(O, P)) return createDesc(!pIE.f.call(O, P), O[P]);\n};\n\n/***/ }),\n\n/***/ \"iMm/\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar toInteger = __webpack_require__(\"ojkp\");\nvar defined = __webpack_require__(\"hywW\");\n\nmodule.exports = function repeat(count) {\n  var str = String(defined(this));\n  var res = '';\n  var n = toInteger(count);\n  if (n < 0 || n == Infinity) throw RangeError(\"Count can't be negative\");\n  for (; n > 0; (n >>>= 1) && (str += str)) {\n    if (n & 1) res += str;\n  }return res;\n};\n\n/***/ }),\n\n/***/ \"jOWB\":\n/***/ (function(module, exports) {\n\nmodule.exports = function (it) {\n  if (typeof it != 'function') throw TypeError(it + ' is not a function!');\n  return it;\n};\n\n/***/ }),\n\n/***/ \"joOv\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\nObject.defineProperty(__webpack_exports__, \"__esModule\", { value: true });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"supportsCssVariables\", function() { return supportsCssVariables; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"applyPassive\", function() { return applyPassive; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"getMatchesProperty\", function() { return getMatchesProperty; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"getNormalizedEventCoords\", function() { return getNormalizedEventCoords; });\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Stores result from supportsCssVariables to avoid redundant processing to detect CSS custom variable support.\n * @private {boolean|undefined}\n */\nvar supportsCssVariables_ = void 0;\n\n/**\n * Stores result from applyPassive to avoid redundant processing to detect passive event listener support.\n * @private {boolean|undefined}\n */\nvar supportsPassive_ = void 0;\n\n/**\n * @param {!Window} windowObj\n * @return {boolean}\n */\nfunction detectEdgePseudoVarBug(windowObj) {\n  // Detect versions of Edge with buggy var() support\n  // See: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/11495448/\n  var document = windowObj.document;\n  var node = document.createElement('div');\n  node.className = 'mdc-ripple-surface--test-edge-var-bug';\n  document.body.appendChild(node);\n\n  // The bug exists if ::before style ends up propagating to the parent element.\n  // Additionally, getComputedStyle returns null in iframes with display: \"none\" in Firefox,\n  // but Firefox is known to support CSS custom properties correctly.\n  // See: https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n  var computedStyle = windowObj.getComputedStyle(node);\n  var hasPseudoVarBug = computedStyle !== null && computedStyle.borderTopStyle === 'solid';\n  node.remove();\n  return hasPseudoVarBug;\n}\n\n/**\n * @param {!Window} windowObj\n * @param {boolean=} forceRefresh\n * @return {boolean|undefined}\n */\n\nfunction supportsCssVariables(windowObj) {\n  var forceRefresh = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n  var supportsCssVariables = supportsCssVariables_;\n  if (typeof supportsCssVariables_ === 'boolean' && !forceRefresh) {\n    return supportsCssVariables;\n  }\n\n  var supportsFunctionPresent = windowObj.CSS && typeof windowObj.CSS.supports === 'function';\n  if (!supportsFunctionPresent) {\n    return;\n  }\n\n  var explicitlySupportsCssVars = windowObj.CSS.supports('--css-vars', 'yes');\n  // See: https://bugs.webkit.org/show_bug.cgi?id=154669\n  // See: README section on Safari\n  var weAreFeatureDetectingSafari10plus = windowObj.CSS.supports('(--css-vars: yes)') && windowObj.CSS.supports('color', '#00000000');\n\n  if (explicitlySupportsCssVars || weAreFeatureDetectingSafari10plus) {\n    supportsCssVariables = !detectEdgePseudoVarBug(windowObj);\n  } else {\n    supportsCssVariables = false;\n  }\n\n  if (!forceRefresh) {\n    supportsCssVariables_ = supportsCssVariables;\n  }\n  return supportsCssVariables;\n}\n\n//\n/**\n * Determine whether the current browser supports passive event listeners, and if so, use them.\n * @param {!Window=} globalObj\n * @param {boolean=} forceRefresh\n * @return {boolean|{passive: boolean}}\n */\nfunction applyPassive() {\n  var globalObj = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : window;\n  var forceRefresh = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n  if (supportsPassive_ === undefined || forceRefresh) {\n    var isSupported = false;\n    try {\n      globalObj.document.addEventListener('test', null, { get passive() {\n          isSupported = true;\n        } });\n    } catch (e) {}\n\n    supportsPassive_ = isSupported;\n  }\n\n  return supportsPassive_ ? { passive: true } : false;\n}\n\n/**\n * @param {!Object} HTMLElementPrototype\n * @return {!Array<string>}\n */\nfunction getMatchesProperty(HTMLElementPrototype) {\n  return ['webkitMatchesSelector', 'msMatchesSelector', 'matches'].filter(function (p) {\n    return p in HTMLElementPrototype;\n  }).pop();\n}\n\n/**\n * @param {!Event} ev\n * @param {{x: number, y: number}} pageOffset\n * @param {!ClientRect} clientRect\n * @return {{x: number, y: number}}\n */\nfunction getNormalizedEventCoords(ev, pageOffset, clientRect) {\n  var x = pageOffset.x,\n      y = pageOffset.y;\n\n  var documentX = x + clientRect.left;\n  var documentY = y + clientRect.top;\n\n  var normalizedX = void 0;\n  var normalizedY = void 0;\n  // Determine touch point relative to the ripple container.\n  if (ev.type === 'touchstart') {\n    normalizedX = ev.changedTouches[0].pageX - documentX;\n    normalizedY = ev.changedTouches[0].pageY - documentY;\n  } else {\n    normalizedX = ev.pageX - documentX;\n    normalizedY = ev.pageY - documentY;\n  }\n\n  return { x: normalizedX, y: normalizedY };\n}\n\n\n\n/***/ }),\n\n/***/ \"k3/E\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// 9.4.2.3 ArraySpeciesCreate(originalArray, length)\nvar speciesConstructor = __webpack_require__(\"ABuq\");\n\nmodule.exports = function (original, length) {\n  return new (speciesConstructor(original))(length);\n};\n\n/***/ }),\n\n/***/ \"kdDS\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// all enumerable object keys, includes symbols\nvar getKeys = __webpack_require__(\"/CHd\");\nvar gOPS = __webpack_require__(\"dpY+\");\nvar pIE = __webpack_require__(\"Nwxm\");\nmodule.exports = function (it) {\n  var result = getKeys(it);\n  var getSymbols = gOPS.f;\n  if (getSymbols) {\n    var symbols = getSymbols(it);\n    var isEnum = pIE.f;\n    var i = 0;\n    var key;\n    while (symbols.length > i) {\n      if (isEnum.call(it, key = symbols[i++])) result.push(key);\n    }\n  }return result;\n};\n\n/***/ }),\n\n/***/ \"l2U+\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar has = __webpack_require__(\"5dDi\");\nvar toIObject = __webpack_require__(\"SFi4\");\nvar arrayIndexOf = __webpack_require__(\"P3U5\")(false);\nvar IE_PROTO = __webpack_require__(\"yGA3\")('IE_PROTO');\n\nmodule.exports = function (object, names) {\n  var O = toIObject(object);\n  var i = 0;\n  var result = [];\n  var key;\n  for (key in O) {\n    if (key != IE_PROTO) has(O, key) && result.push(key);\n  } // Don't enum bug & hidden keys\n  while (names.length > i) {\n    if (has(O, key = names[i++])) {\n      ~arrayIndexOf(result, key) || result.push(key);\n    }\n  }return result;\n};\n\n/***/ }),\n\n/***/ \"l7GE\":\n/***/ (function(module, exports) {\n\n// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028\nvar global = module.exports = typeof window != 'undefined' && window.Math == Math ? window : typeof self != 'undefined' && self.Math == Math ? self\n// eslint-disable-next-line no-new-func\n: Function('return this')();\nif (typeof __g == 'number') __g = global; // eslint-disable-line no-undef\n\n/***/ }),\n\n/***/ \"mV6u\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"m\", function() { return SET_AUTH_USER; });\n/* unused harmony export LOGIN */\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"e\", function() { return LOGOUT; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"c\", function() { return LOGIN_START; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"d\", function() { return LOGIN_SUCCESS; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"b\", function() { return LOGIN_FAILURE; });\n/* unused harmony export LOGOUT_START */\n/* unused harmony export LOGOUT_SUCCESS */\n/* unused harmony export LOGOUT_FAILURE */\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"p\", function() { return SET_ROUTE; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"l\", function() { return SEND_MESSAGE; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"h\", function() { return RECEIVE_MESSAGE; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"j\", function() { return REMOVE_MESSAGE; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"g\", function() { return PUBLISH_QUESTION; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"q\", function() { return UNPUBLISH_QUESTION; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"i\", function() { return RECEIVE_QUESTION; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"k\", function() { return REMOVE_QUESTION; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"o\", function() { return SET_CHANNEL; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"f\", function() { return MESSAGE; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"a\", function() { return HAND_RAISE; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"n\", function() { return SET_AVATAR_STATUS; });\nvar SET_AUTH_USER = 'SET_AUTH_USER';\n\nvar LOGIN = 'LOGIN';\nvar LOGOUT = 'LOGOUT';\n\nvar LOGIN_START = 'LOGIN_START';\nvar LOGIN_SUCCESS = 'LOGIN_SUCCESS';\nvar LOGIN_FAILURE = 'LOGIN_FAILURE';\n\nvar LOGOUT_START = 'LOGOUT_START';\nvar LOGOUT_SUCCESS = 'LOGOUT_SUCCESS';\nvar LOGOUT_FAILURE = 'LOGOUT_FAILURE';\n\nvar SET_ROUTE = 'SET_ROUTE';\n\nvar SEND_MESSAGE = 'SEND_MESSAGE';\nvar RECEIVE_MESSAGE = 'RECEIVE_MESSAGE';\nvar REMOVE_MESSAGE = 'REMOVE_MESSAGE';\n\nvar PUBLISH_QUESTION = 'PUBLISH_QUESTION';\nvar UNPUBLISH_QUESTION = 'UNPUBLISH_QUESTION';\nvar RECEIVE_QUESTION = 'RECEIVE_QUESTION';\nvar REMOVE_QUESTION = 'REMOVE_QUESTION';\n\nvar SET_CHANNEL = 'SET_CHANNEL';\n\nvar MESSAGE = 'MESSAGE';\nvar HAND_RAISE = 'HAND_RAISE';\n\nvar SET_AVATAR_STATUS = 'SET_AVATAR_STATUS';\n\n/***/ }),\n\n/***/ \"mns5\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar isObject = __webpack_require__(\"A7+C\");\nvar document = __webpack_require__(\"l7GE\").document;\n// typeof document.createElement is 'object' in old IE\nvar is = isObject(document) && isObject(document.createElement);\nmodule.exports = function (it) {\n  return is ? document.createElement(it) : {};\n};\n\n/***/ }),\n\n/***/ \"n1EQ\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n// 21.1.3.18 String.prototype.startsWith(searchString [, position ])\n\n\nvar $export = __webpack_require__(\"Rhd1\");\nvar toLength = __webpack_require__(\"5sKr\");\nvar context = __webpack_require__(\"VmyN\");\nvar STARTS_WITH = 'startsWith';\nvar $startsWith = ''[STARTS_WITH];\n\n$export($export.P + $export.F * __webpack_require__(\"tDOT\")(STARTS_WITH), 'String', {\n  startsWith: function startsWith(searchString /* , position = 0 */) {\n    var that = context(this, searchString, STARTS_WITH);\n    var index = toLength(Math.min(arguments.length > 1 ? arguments[1] : undefined, that.length));\n    var search = String(searchString);\n    return $startsWith ? $startsWith.call(that, search, index) : that.slice(index, index + search.length) === search;\n  }\n});\n\n/***/ }),\n\n/***/ \"nPht\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nexports.__esModule = true;\n\nexports.default = function (req) {\n\tfunction Async() {\n\t\tvar _this = this;\n\n\t\t_preact.Component.call(this);\n\n\t\tvar b = void 0,\n\t\t    old = void 0;\n\t\tthis.componentWillMount = function () {\n\t\t\tb = _this.base = _this.nextBase || _this.__b;\n\t\t\treq(function (m) {\n\t\t\t\t_this.setState({ child: m.default || m });\n\t\t\t});\n\t\t};\n\n\t\tthis.shouldComponentUpdate = function (_, nxt) {\n\t\t\tnxt = nxt.child === void 0;\n\t\t\tif (nxt && old === void 0 && !!b) {\n\t\t\t\told = (0, _preact.h)(b.nodeName, { dangerouslySetInnerHTML: { __html: b.innerHTML } });\n\t\t\t} else {\n\t\t\t\told = '';\n\t\t\t}\n\t\t\treturn !nxt;\n\t\t};\n\n\t\tthis.render = function (p, s) {\n\t\t\treturn s.child ? (0, _preact.h)(s.child, p) : old;\n\t\t};\n\t}\n\t(Async.prototype = new _preact.Component()).constructor = Async;\n\treturn Async;\n};\n\nvar _preact = __webpack_require__(\"KM04\");\n\n/***/ }),\n\n/***/ \"nQ/l\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\nObject.defineProperty(__webpack_exports__, \"__esModule\", { value: true });\n\n// EXTERNAL MODULE: ../node_modules/@material/base/component.js\nvar component = __webpack_require__(\"EQDb\");\n\n// EXTERNAL MODULE: ../node_modules/@material/ripple/index.js + 3 modules\nvar ripple = __webpack_require__(\"vkNc\");\n\n// CONCATENATED MODULE: ../node_modules/@material/selection-control/index.js\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/* eslint-disable no-unused-vars */\n\n/* eslint-enable no-unused-vars */\n\n/**\n * @typedef {{\n *   checked: boolean,\n *   indeterminate: boolean,\n *   disabled: boolean,\n *   value: ?string\n * }}\n */\nvar MDCSelectionControlState = void 0;\n\n/**\n * @record\n */\n\nvar MDCSelectionControl = function () {\n  function MDCSelectionControl() {\n    _classCallCheck(this, MDCSelectionControl);\n  }\n\n  _createClass(MDCSelectionControl, [{\n    key: 'ripple',\n\n    /** @return {?MDCRipple} */\n    get: function get() {}\n  }]);\n\n  return MDCSelectionControl;\n}();\n\n\n// EXTERNAL MODULE: ../node_modules/@material/base/foundation.js\nvar base_foundation = __webpack_require__(\"uJAj\");\n\n// CONCATENATED MODULE: ../node_modules/@material/switch/adapter.js\nfunction adapter__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/* eslint no-unused-vars: [2, {\"args\": \"none\"}] */\n\n/**\n * Adapter for MDC Switch. Provides an interface for managing\n * - classes\n * - dom\n *\n * Additionally, provides type information for the adapter to the Closure\n * compiler.\n *\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n *\n * @record\n */\nvar MDCSwitchAdapter = function () {\n  function MDCSwitchAdapter() {\n    adapter__classCallCheck(this, MDCSwitchAdapter);\n  }\n\n  /** @param {string} className */\n  MDCSwitchAdapter.prototype.addClass = function addClass(className) {};\n\n  /** @param {string} className */\n\n\n  MDCSwitchAdapter.prototype.removeClass = function removeClass(className) {};\n\n  /** @param {boolean} checked */\n\n\n  MDCSwitchAdapter.prototype.setNativeControlChecked = function setNativeControlChecked(checked) {};\n\n  /** @param {boolean} disabled */\n\n\n  MDCSwitchAdapter.prototype.setNativeControlDisabled = function setNativeControlDisabled(disabled) {};\n\n  return MDCSwitchAdapter;\n}();\n\n/* harmony default export */ var switch_adapter = (MDCSwitchAdapter);\n// CONCATENATED MODULE: ../node_modules/@material/switch/constants.js\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** @enum {string} */\nvar cssClasses = {\n  CHECKED: 'mdc-switch--checked',\n  DISABLED: 'mdc-switch--disabled'\n};\n\n/** @enum {string} */\nvar strings = {\n  NATIVE_CONTROL_SELECTOR: '.mdc-switch__native-control',\n  RIPPLE_SURFACE_SELECTOR: '.mdc-switch__thumb-underlay'\n};\n\n\n// CONCATENATED MODULE: ../node_modules/@material/switch/foundation.js\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar foundation__createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction foundation__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n/* eslint-enable no-unused-vars */\n\n\n/**\n * @extends {MDCFoundation<!MDCSwitchAdapter>}\n */\n\nvar foundation_MDCSwitchFoundation = function (_MDCFoundation) {\n  _inherits(MDCSwitchFoundation, _MDCFoundation);\n\n  foundation__createClass(MDCSwitchFoundation, null, [{\n    key: 'strings',\n\n    /** @return enum {string} */\n    get: function get() {\n      return strings;\n    }\n\n    /** @return enum {string} */\n\n  }, {\n    key: 'cssClasses',\n    get: function get() {\n      return cssClasses;\n    }\n\n    /** @return {!MDCSwitchAdapter} */\n\n  }, {\n    key: 'defaultAdapter',\n    get: function get() {\n      return (/** @type {!MDCSwitchAdapter} */{\n          addClass: function addClass() /* className: string */{},\n          removeClass: function removeClass() /* className: string */{},\n          setNativeControlChecked: function setNativeControlChecked() /* checked: boolean */{},\n          setNativeControlDisabled: function setNativeControlDisabled() /* disabled: boolean */{}\n        }\n      );\n    }\n  }]);\n\n  function MDCSwitchFoundation(adapter) {\n    foundation__classCallCheck(this, MDCSwitchFoundation);\n\n    return _possibleConstructorReturn(this, _MDCFoundation.call(this, _extends(MDCSwitchFoundation.defaultAdapter, adapter)));\n  }\n\n  /** @param {boolean} checked */\n\n\n  MDCSwitchFoundation.prototype.setChecked = function setChecked(checked) {\n    this.adapter_.setNativeControlChecked(checked);\n    this.updateCheckedStyling_(checked);\n  };\n\n  /** @param {boolean} disabled */\n\n\n  MDCSwitchFoundation.prototype.setDisabled = function setDisabled(disabled) {\n    this.adapter_.setNativeControlDisabled(disabled);\n    if (disabled) {\n      this.adapter_.addClass(cssClasses.DISABLED);\n    } else {\n      this.adapter_.removeClass(cssClasses.DISABLED);\n    }\n  };\n\n  /**\n   * Handles the change event for the switch native control.\n   * @param {!Event} evt\n   */\n\n\n  MDCSwitchFoundation.prototype.handleChange = function handleChange(evt) {\n    this.updateCheckedStyling_(evt.target.checked);\n  };\n\n  /**\n   * Updates the styling of the switch based on its checked state.\n   * @param {boolean} checked\n   * @private\n   */\n\n\n  MDCSwitchFoundation.prototype.updateCheckedStyling_ = function updateCheckedStyling_(checked) {\n    if (checked) {\n      this.adapter_.addClass(cssClasses.CHECKED);\n    } else {\n      this.adapter_.removeClass(cssClasses.CHECKED);\n    }\n  };\n\n  return MDCSwitchFoundation;\n}(base_foundation[\"a\" /* default */]);\n\n/* harmony default export */ var switch_foundation = (foundation_MDCSwitchFoundation);\n// EXTERNAL MODULE: ../node_modules/@material/ripple/util.js\nvar util = __webpack_require__(\"joOv\");\n\n// CONCATENATED MODULE: ../node_modules/@material/switch/index.js\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"MDCSwitch\", function() { return switch_MDCSwitch; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"MDCSwitchFoundation\", function() { return switch_foundation; });\nvar switch__extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar switch__createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction switch__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction switch__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction switch__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n/* eslint-disable no-unused-vars */\n\n/* eslint-enable no-unused-vars */\n\n\n\n\n/**\n * @extends MDCComponent<!MDCSwitchFoundation>\n * @implements {MDCSelectionControl}\n */\n\nvar switch_MDCSwitch = function (_MDCComponent) {\n  switch__inherits(MDCSwitch, _MDCComponent);\n\n  MDCSwitch.attachTo = function attachTo(root) {\n    return new MDCSwitch(root);\n  };\n\n  function MDCSwitch() {\n    switch__classCallCheck(this, MDCSwitch);\n\n    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    /** @private {!MDCRipple} */\n    var _this = switch__possibleConstructorReturn(this, _MDCComponent.call.apply(_MDCComponent, [this].concat(args)));\n\n    _this.ripple_ = _this.initRipple_();\n\n    /** @private {!Function} */\n    _this.changeHandler_;\n    return _this;\n  }\n\n  MDCSwitch.prototype.destroy = function destroy() {\n    _MDCComponent.prototype.destroy.call(this);\n    this.ripple_.destroy();\n    this.nativeControl_.removeEventListener('change', this.changeHandler_);\n  };\n\n  MDCSwitch.prototype.initialSyncWithDOM = function initialSyncWithDOM() {\n    this.changeHandler_ = this.foundation_.handleChange.bind(this.foundation_);\n    this.nativeControl_.addEventListener('change', this.changeHandler_);\n\n    // Sometimes the checked state of the input element is saved in the history.\n    // The switch styling should match the checked state of the input element.\n    // Do an initial sync between the native control and the foundation.\n    this.checked = this.checked;\n  };\n\n  /**\n   * Returns the state of the native control element, or null if the native control element is not present.\n   * @return {?MDCSelectionControlState}\n   * @private\n   */\n\n\n  /**\n   * @return {!MDCRipple}\n   * @private\n   */\n  MDCSwitch.prototype.initRipple_ = function initRipple_() {\n    var _this2 = this;\n\n    var RIPPLE_SURFACE_SELECTOR = switch_foundation.strings.RIPPLE_SURFACE_SELECTOR;\n\n    var rippleSurface = /** @type {!Element} */this.root_.querySelector(RIPPLE_SURFACE_SELECTOR);\n\n    var MATCHES = Object(util[\"getMatchesProperty\"])(HTMLElement.prototype);\n    var adapter = switch__extends(ripple[\"MDCRipple\"].createAdapter(this), {\n      isUnbounded: function isUnbounded() {\n        return true;\n      },\n      isSurfaceActive: function isSurfaceActive() {\n        return _this2.nativeControl_[MATCHES](':active');\n      },\n      addClass: function addClass(className) {\n        return rippleSurface.classList.add(className);\n      },\n      removeClass: function removeClass(className) {\n        return rippleSurface.classList.remove(className);\n      },\n      registerInteractionHandler: function registerInteractionHandler(type, handler) {\n        return _this2.nativeControl_.addEventListener(type, handler);\n      },\n      deregisterInteractionHandler: function deregisterInteractionHandler(type, handler) {\n        return _this2.nativeControl_.removeEventListener(type, handler);\n      },\n      updateCssVariable: function updateCssVariable(varName, value) {\n        return rippleSurface.style.setProperty(varName, value);\n      },\n      computeBoundingRect: function computeBoundingRect() {\n        return rippleSurface.getBoundingClientRect();\n      }\n    });\n    var foundation = new ripple[\"MDCRippleFoundation\"](adapter);\n    return new ripple[\"MDCRipple\"](this.root_, foundation);\n  };\n\n  /** @return {!MDCSwitchFoundation} */\n\n\n  MDCSwitch.prototype.getDefaultFoundation = function getDefaultFoundation() {\n    var _this3 = this;\n\n    return new switch_foundation({\n      addClass: function addClass(className) {\n        return _this3.root_.classList.add(className);\n      },\n      removeClass: function removeClass(className) {\n        return _this3.root_.classList.remove(className);\n      },\n      setNativeControlChecked: function setNativeControlChecked(checked) {\n        return _this3.nativeControl_.checked = checked;\n      },\n      setNativeControlDisabled: function setNativeControlDisabled(disabled) {\n        return _this3.nativeControl_.disabled = disabled;\n      }\n    });\n  };\n\n  /** @return {!MDCRipple} */\n\n\n  switch__createClass(MDCSwitch, [{\n    key: 'nativeControl_',\n    get: function get() {\n      var NATIVE_CONTROL_SELECTOR = switch_foundation.strings.NATIVE_CONTROL_SELECTOR;\n\n      var el = /** @type {?MDCSelectionControlState} */this.root_.querySelector(NATIVE_CONTROL_SELECTOR);\n      return el;\n    }\n  }, {\n    key: 'ripple',\n    get: function get() {\n      return this.ripple_;\n    }\n\n    /** @return {boolean} */\n\n  }, {\n    key: 'checked',\n    get: 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IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * @template A\n */\nvar MDCFoundation = function () {\n  _createClass(MDCFoundation, null, [{\n    key: \"cssClasses\",\n\n    /** @return enum{cssClasses} */\n    get: function get() {\n      // Classes extending MDCFoundation should implement this method to return an object which exports every\n      // CSS class the foundation class needs as a property. e.g. {ACTIVE: 'mdc-component--active'}\n      return {};\n    }\n\n    /** @return enum{strings} */\n\n  }, {\n    key: \"strings\",\n    get: function get() {\n      // Classes extending MDCFoundation should implement this method to return an object which exports all\n      // semantic strings as constants. e.g. {ARIA_ROLE: 'tablist'}\n      return {};\n    }\n\n    /** @return enum{numbers} */\n\n  }, {\n    key: \"numbers\",\n    get: function get() {\n      // Classes extending MDCFoundation should implement this method to return an object which exports all\n      // of its semantic numbers as constants. e.g. {ANIMATION_DELAY_MS: 350}\n      return {};\n    }\n\n    /** @return {!Object} */\n\n  }, {\n    key: \"defaultAdapter\",\n    get: function get() {\n      // Classes extending MDCFoundation may choose to implement this getter in order to provide a convenient\n      // way of viewing the necessary methods of an adapter. In the future, this could also be used for adapter\n      // validation.\n      return {};\n    }\n\n    /**\n     * @param {A=} adapter\n     */\n\n  }]);\n\n  function MDCFoundation() {\n    var adapter = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n    _classCallCheck(this, MDCFoundation);\n\n    /** @protected {!A} */\n    this.adapter_ = adapter;\n  }\n\n  MDCFoundation.prototype.init = function init() {\n    // Subclasses should override this method to perform initialization routines (registering events, etc.)\n  };\n\n  MDCFoundation.prototype.destroy = function destroy() {\n    // Subclasses should override this method to perform de-initialization routines (de-registering events, etc.)\n  };\n\n  return MDCFoundation;\n}();\n\n/* harmony default export */ __webpack_exports__[\"a\"] = (MDCFoundation);\n\n/***/ }),\n\n/***/ \"uc5p\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar _interopRequireDefault = __webpack_require__(\"SpGf\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.MaterialComponent = void 0;\n\nvar _classCallCheck2 = _interopRequireDefault(__webpack_require__(\"0fcM\"));\n\nvar _createClass2 = _interopRequireDefault(__webpack_require__(\"P8NW\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(__webpack_require__(\"0421\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(__webpack_require__(\"UJE0\"));\n\nvar _inherits2 = _interopRequireDefault(__webpack_require__(\"d4H2\"));\n\nvar _typeof2 = _interopRequireDefault(__webpack_require__(\"b9XL\"));\n\nvar _ripple = __webpack_require__(\"vkNc\");\n\nvar _bindDecorator = __webpack_require__(\"gKs0\");\n\nvar _preact = __webpack_require__(\"KM04\");\n\nvar __decorate = void 0 && (void 0).__decorate || function (decorators, target, key, desc) {\n  var c = arguments.length,\n      r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc,\n      d;\n  if ((typeof Reflect === \"undefined\" ? \"undefined\" : (0, _typeof2.default)(Reflect)) === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);else for (var i = decorators.length - 1; i >= 0; i--) {\n    if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n  }\n  return c > 3 && r && Object.defineProperty(target, key, r), r;\n};\n\nvar doNotRemoveProps = ['disabled'];\n/**\n * Base class for every Material component in this package\n * NOTE: every component should add a ref by the name of `control` to its root dom for autoInit Properties\n *\n * @export\n * @class MaterialComponent\n * @extends {Component}\n */\n\nvar MaterialComponent =\n/*#__PURE__*/\nfunction (_Component) {\n  (0, _inherits2.default)(MaterialComponent, _Component);\n\n  function MaterialComponent() {\n    (0, _classCallCheck2.default)(this, MaterialComponent);\n    return (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(MaterialComponent).apply(this, arguments));\n  }\n\n  (0, _createClass2.default)(MaterialComponent, [{\n    key: \"render\",\n    value: function render(props) {\n      if (!this.classText) {\n        this.classText = this.buildClassName(props);\n      } // Fetch a VNode\n\n\n      var componentProps = props;\n      var userDefinedClasses = componentProps.className || componentProps.class || ''; // We delete class props and add them later in the final\n      // step so every component does not need to handle user specified classes.\n\n      if (componentProps.class) {\n        delete componentProps.class;\n      }\n\n      if (componentProps.className) {\n        delete componentProps.className;\n      }\n\n      var element = this.materialDom(componentProps);\n      element.attributes = element.attributes || {};\n      element.attributes.className = \"\".concat(userDefinedClasses, \" \").concat(this.getClassName(element)).split(' ').filter(function (value, index, self) {\n        return self.indexOf(value) === index && value !== '';\n      }) // Unique + exclude empty class names\n      .join(' '); // Clean this shit of proxy attributes\n\n      this.mdcProps.forEach(function (prop) {\n        // TODO: Fix this better\n        if (prop in doNotRemoveProps) {\n          return;\n        }\n\n        delete element.attributes[prop];\n      });\n      return element;\n    }\n    /** Attach the ripple effect */\n\n  }, {\n    key: \"componentDidMount\",\n    value: function componentDidMount() {\n      if (this.props.ripple && this.control) {\n        this.ripple = new _ripple.MDCRipple(this.control);\n      }\n    }\n  }, {\n    key: \"componentWillReceiveProps\",\n    value: function componentWillReceiveProps(nextProps) {\n      if (this.MDComponent && this.mdcNotifyProps) {\n        var _iteratorNormalCompletion = true;\n        var _didIteratorError = false;\n        var _iteratorError = undefined;\n\n        try {\n          for (var _iterator = this.mdcNotifyProps[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n            var prop = _step.value;\n\n            if (this.props[prop] !== nextProps[prop]) {\n              this.MDComponent[prop] = nextProps[prop];\n            }\n          }\n        } catch (err) {\n          _didIteratorError = true;\n          _iteratorError = err;\n        } finally {\n          try {\n            if (!_iteratorNormalCompletion && _iterator.return != null) {\n              _iterator.return();\n            }\n          } finally {\n            if (_didIteratorError) {\n              throw _iteratorError;\n            }\n          }\n        }\n      }\n\n      var _iteratorNormalCompletion2 = true;\n      var _didIteratorError2 = false;\n      var _iteratorError2 = undefined;\n\n      try {\n        for (var _iterator2 = this.mdcProps[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n          var _prop = _step2.value;\n\n          if (this.props[_prop] !== nextProps[_prop]) {\n            this.classText = this.buildClassName(nextProps);\n            break;\n          }\n        }\n      } catch (err) {\n        _didIteratorError2 = true;\n        _iteratorError2 = err;\n      } finally {\n        try {\n          if (!_iteratorNormalCompletion2 && _iterator2.return != null) {\n            _iterator2.return();\n          }\n        } finally {\n          if (_didIteratorError2) {\n            throw _iteratorError2;\n          }\n        }\n      }\n    }\n  }, {\n    key: \"componentWillUnmount\",\n    value: function componentWillUnmount() {\n      if (this.ripple) {\n        this.ripple.destroy();\n      }\n    }\n  }, {\n    key: \"afterComponentDidMount\",\n    value: function afterComponentDidMount() {\n      if (this.MDComponent && this.mdcNotifyProps) {\n        var _iteratorNormalCompletion3 = true;\n        var _didIteratorError3 = false;\n        var _iteratorError3 = undefined;\n\n        try {\n          for (var _iterator3 = this.mdcNotifyProps[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n            var prop = _step3.value;\n            this.MDComponent[prop] = this.props[prop];\n          }\n        } catch (err) {\n          _didIteratorError3 = true;\n          _iteratorError3 = err;\n        } finally {\n          try {\n            if (!_iteratorNormalCompletion3 && _iterator3.return != null) {\n              _iterator3.return();\n            }\n          } finally {\n            if (_didIteratorError3) {\n              throw _iteratorError3;\n            }\n          }\n        }\n      }\n    } // Shared setter for the root element ref\n\n  }, {\n    key: \"setControlRef\",\n    value: function setControlRef(control) {\n      this.control = control;\n    }\n    /** Build the className based on component names and mdc props */\n\n  }, {\n    key: \"buildClassName\",\n    value: function buildClassName(props) {\n      // Class name based on component name\n      var classText = 'mdc-' + this.componentName; // Loop over mdcProps to turn them into classNames\n\n      for (var propKey in props) {\n        if (props.hasOwnProperty(propKey)) {\n          var prop = props[propKey];\n\n          if (typeof prop === 'boolean' && prop) {\n            if (this.mdcProps.indexOf(propKey) !== -1) {\n              classText += \" mdc-\".concat(this.componentName, \"--\").concat(propKey);\n            }\n          }\n        }\n      }\n\n      return classText;\n    }\n    /** Returns the class name for element */\n\n  }, {\n    key: \"getClassName\",\n    value: function getClassName(element) {\n      if (!element) {\n        return '';\n      }\n\n      var attrs = element.attributes = element.attributes || {};\n      var classText = this.classText;\n\n      if (attrs.class) {\n        classText += ' ' + attrs.class;\n      }\n\n      if (attrs.className && attrs.className !== attrs.class) {\n        classText += ' ' + attrs.className;\n      }\n\n      return classText;\n    }\n  }]);\n  return MaterialComponent;\n}(_preact.Component);\n\nexports.MaterialComponent = MaterialComponent;\n\n__decorate([_bindDecorator.bind], MaterialComponent.prototype, \"setControlRef\", null);\n\nvar _default = MaterialComponent;\nexports.default = _default;\n//# sourceMappingURL=MaterialComponent.js.map\n\n/***/ }),\n\n/***/ \"vdRI\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXTERNAL MODULE: ../node_modules/redux/es/redux.js\nvar redux = __webpack_require__(\"aV+f\");\n\n// EXTERNAL MODULE: ./firebase/index.js + 4 modules\nvar firebase = __webpack_require__(\"82jB\");\n\n// EXTERNAL MODULE: ./constants/index.js\nvar constants = __webpack_require__(\"mV6u\");\n\n// CONCATENATED MODULE: ./reducers/index.js\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\n\n\n\n\n// TODO: Break these up. Remember, it's really only useful as a global\n// state item if it needs to be used in multiple places.\n// https://medium.com/@stowball/a-dummys-guide-to-redux-and-thunk-in-react-d8904a7005d3\n\n/*******************/\n/* CHANNEL REDUCER */\n/*******************/\n\nfunction channel() {\n\tvar state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : { channel: null };\n\tvar action = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\tswitch (action.type) {\n\t\tcase constants[\"o\" /* SET_CHANNEL */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tchannel: action.channel\n\t\t\t});\n\t\tdefault:\n\t\t\treturn _extends({}, state);\n\t}\n}\n\n/****************/\n/* CHAT REDUCER */\n/****************/\n\nvar initialChatState = {\n\tmessage: { author: { name: null, id: null }, text: null },\n\tmessages: []\n};\n\nfunction chatMessages() {\n\tvar state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : initialChatState;\n\tvar action = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\tswitch (action.type) {\n\t\tcase constants[\"l\" /* SEND_MESSAGE */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tmessage: action.message\n\t\t\t});\n\t\tcase constants[\"h\" /* RECEIVE_MESSAGE */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tmessages: [action.message].concat(state.messages)\n\t\t\t});\n\t\tcase constants[\"j\" /* REMOVE_MESSAGE */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tmessages: state.messages.filter(function (message) {\n\t\t\t\t\treturn message.id !== action.message.id;\n\t\t\t\t})\n\t\t\t});\n\t\tdefault:\n\t\t\treturn _extends({}, state);\n\t}\n}\n\n/********************/\n/* QUESTION REDUCER */\n/********************/\n\nvar initialQuestionsState = {\n\tquestions: [],\n\tpublished: false\n};\n\nfunction questions() {\n\tvar state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : initialQuestionsState;\n\tvar action = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\tswitch (action.type) {\n\t\tcase constants[\"g\" /* PUBLISH_QUESTION */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tpublished: action.published\n\t\t\t});\n\t\tcase constants[\"q\" /* UNPUBLISH_QUESTION */]:\n\t\t\treturn _extends({}, state);\n\t\tcase constants[\"i\" /* RECEIVE_QUESTION */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tquestions: [action.question].concat(state.questions)\n\t\t\t});\n\t\tcase constants[\"k\" /* REMOVE_QUESTION */]:\n\t\t\tconsole.log('removing question', action.question.id);\n\t\t\treturn _extends({}, state, {\n\t\t\t\tquestions: state.questions.filter(function (question) {\n\t\t\t\t\treturn question.id !== action.question.id;\n\t\t\t\t})\n\t\t\t});\n\n\t\tdefault:\n\t\t\treturn state;\n\t}\n}\n\n/*****************/\n/* ROUTE REDUCER */\n/*****************/\n\nvar initialRouteState = {\n\troute: null\n};\n\nfunction currentRoute() {\n\tvar state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : initialRouteState;\n\tvar action = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\tswitch (action.type) {\n\t\tcase constants[\"p\" /* SET_ROUTE */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\troute: action.route\n\t\t\t});\n\t\tdefault:\n\t\t\treturn _extends({}, state);\n\t}\n}\n\n/*************************/\n/* AVATAR STATUS REDUCER */\n/*************************/\n\nvar initialAvatarStatusState = {\n\tstatus: null,\n\tdescription: null\n};\n\nfunction avatarStatus() {\n\tvar state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : initialAvatarStatusState;\n\tvar action = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\tswitch (action.type) {\n\t\tcase constants[\"n\" /* SET_AVATAR_STATUS */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tstatus: action.payload.status,\n\t\t\t\tdescription: action.payload.description\n\t\t\t});\n\t\tdefault:\n\t\t\treturn state;\n\t}\n}\n\n/**************************/\n/* AUTHENTICATION REDUCER */\n/**************************/\n\nvar initialAuthState = {\n\tuser: null,\n\tuserDataRef: null,\n\terror: false\n};\n\nfunction authentication() {\n\tvar state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : initialAuthState;\n\tvar action = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\tswitch (action.type) {\n\t\tcase constants[\"c\" /* LOGIN_START */]:\n\t\t\treturn _extends({}, state);\n\t\tcase constants[\"m\" /* SET_AUTH_USER */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tuser: action.user,\n\t\t\t\tuserDataRef: action.userDataRef,\n\t\t\t\terror: false\n\t\t\t});\n\t\tcase constants[\"d\" /* LOGIN_SUCCESS */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tuser: action.user,\n\t\t\t\tuserDataRef: action.userDataRef,\n\t\t\t\terror: false\n\t\t\t});\n\t\tcase constants[\"b\" /* LOGIN_FAILURE */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tuser: null,\n\t\t\t\tuserDataRef: null,\n\t\t\t\terror: true\n\t\t\t});\n\t\tcase constants[\"e\" /* LOGOUT */]:\n\t\t\treturn _extends({}, state, {\n\t\t\t\tuser: null,\n\t\t\t\tuserDataRef: null,\n\t\t\t\terror: false\n\t\t\t});\n\t\tdefault:\n\t\t\treturn state;\n\t}\n}\n\n/****************/\n/* ROOT REDUCER */\n/****************/\n\nvar rootReducer = Object(redux[\"c\" /* combineReducers */])({\n\tchannel: channel,\n\tchatMessages: chatMessages,\n\tquestions: questions,\n\tcurrentRoute: currentRoute,\n\tauthentication: authentication,\n\tavatarStatus: avatarStatus\n});\n\n/* harmony default export */ var reducers = (rootReducer);\n// CONCATENATED MODULE: ../node_modules/redux-thunk/es/index.js\nfunction createThunkMiddleware(extraArgument) {\n  return function (_ref) {\n    var dispatch = _ref.dispatch,\n        getState = _ref.getState;\n    return function (next) {\n      return function (action) {\n        if (typeof action === 'function') {\n          return action(dispatch, getState, extraArgument);\n        }\n\n        return next(action);\n      };\n    };\n  };\n}\n\nvar thunk = createThunkMiddleware();\nthunk.withExtraArgument = createThunkMiddleware;\n\n/* harmony default export */ var es = (thunk);\n// CONCATENATED MODULE: ./store/index.js\n\n\n\n\n// A thunk is a function that returns a function.\n// see https://github.com/reduxjs/redux-thunk\n// also: https://daveceddia.com/what-is-a-thunk/\nvar store = Object(redux[\"d\" /* createStore */])(reducers, Object(redux[\"a\" /* applyMiddleware */])(es));\n\n/* harmony default export */ var store_0 = __webpack_exports__[\"a\"] = (store);\n\n/***/ }),\n\n/***/ \"viVs\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar dP = __webpack_require__(\"cb3v\");\nvar createDesc = __webpack_require__(\"OWuH\");\nmodule.exports = __webpack_require__(\"Luod\") ? function (object, key, value) {\n  return dP.f(object, key, createDesc(1, value));\n} : function (object, key, value) {\n  object[key] = value;\n  return object;\n};\n\n/***/ }),\n\n/***/ \"vkNc\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\nObject.defineProperty(__webpack_exports__, \"__esModule\", { value: true });\n\n// EXTERNAL MODULE: ../node_modules/@material/base/component.js\nvar component = __webpack_require__(\"EQDb\");\n\n// CONCATENATED MODULE: ../node_modules/@material/ripple/adapter.js\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/* eslint no-unused-vars: [2, {\"args\": \"none\"}] */\n\n/**\n * Adapter for MDC Ripple. Provides an interface for managing\n * - classes\n * - dom\n * - CSS variables\n * - position\n * - dimensions\n * - scroll position\n * - event handlers\n * - unbounded, active and disabled states\n *\n * Additionally, provides type information for the adapter to the Closure\n * compiler.\n *\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n *\n * @record\n */\nvar MDCRippleAdapter = function () {\n  function MDCRippleAdapter() {\n    _classCallCheck(this, MDCRippleAdapter);\n  }\n\n  /** @return {boolean} */\n  MDCRippleAdapter.prototype.browserSupportsCssVars = function browserSupportsCssVars() {};\n\n  /** @return {boolean} */\n\n\n  MDCRippleAdapter.prototype.isUnbounded = function isUnbounded() {};\n\n  /** @return {boolean} */\n\n\n  MDCRippleAdapter.prototype.isSurfaceActive = function isSurfaceActive() {};\n\n  /** @return {boolean} */\n\n\n  MDCRippleAdapter.prototype.isSurfaceDisabled = function isSurfaceDisabled() {};\n\n  /** @param {string} className */\n\n\n  MDCRippleAdapter.prototype.addClass = function addClass(className) {};\n\n  /** @param {string} className */\n\n\n  MDCRippleAdapter.prototype.removeClass = function removeClass(className) {};\n\n  /** @param {!EventTarget} target */\n\n\n  MDCRippleAdapter.prototype.containsEventTarget = function containsEventTarget(target) {};\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n\n\n  MDCRippleAdapter.prototype.registerInteractionHandler = function registerInteractionHandler(evtType, handler) {};\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n\n\n  MDCRippleAdapter.prototype.deregisterInteractionHandler = function deregisterInteractionHandler(evtType, handler) {};\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n\n\n  MDCRippleAdapter.prototype.registerDocumentInteractionHandler = function registerDocumentInteractionHandler(evtType, handler) {};\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n\n\n  MDCRippleAdapter.prototype.deregisterDocumentInteractionHandler = function deregisterDocumentInteractionHandler(evtType, handler) {};\n\n  /**\n   * @param {!Function} handler\n   */\n\n\n  MDCRippleAdapter.prototype.registerResizeHandler = function registerResizeHandler(handler) {};\n\n  /**\n   * @param {!Function} handler\n   */\n\n\n  MDCRippleAdapter.prototype.deregisterResizeHandler = function deregisterResizeHandler(handler) {};\n\n  /**\n   * @param {string} varName\n   * @param {?number|string} value\n   */\n\n\n  MDCRippleAdapter.prototype.updateCssVariable = function updateCssVariable(varName, value) {};\n\n  /** @return {!ClientRect} */\n\n\n  MDCRippleAdapter.prototype.computeBoundingRect = function computeBoundingRect() {};\n\n  /** @return {{x: number, y: number}} */\n\n\n  MDCRippleAdapter.prototype.getWindowPageOffset = function getWindowPageOffset() {};\n\n  return MDCRippleAdapter;\n}();\n\n/* harmony default export */ var adapter = (MDCRippleAdapter);\n// EXTERNAL MODULE: ../node_modules/@material/base/foundation.js\nvar foundation = __webpack_require__(\"uJAj\");\n\n// CONCATENATED MODULE: ../node_modules/@material/ripple/constants.js\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nvar cssClasses = {\n  // Ripple is a special case where the \"root\" component is really a \"mixin\" of sorts,\n  // given that it's an 'upgrade' to an existing component. That being said it is the root\n  // CSS class that all other CSS classes derive from.\n  ROOT: 'mdc-ripple-upgraded',\n  UNBOUNDED: 'mdc-ripple-upgraded--unbounded',\n  BG_FOCUSED: 'mdc-ripple-upgraded--background-focused',\n  FG_ACTIVATION: 'mdc-ripple-upgraded--foreground-activation',\n  FG_DEACTIVATION: 'mdc-ripple-upgraded--foreground-deactivation'\n};\n\nvar strings = {\n  VAR_LEFT: '--mdc-ripple-left',\n  VAR_TOP: '--mdc-ripple-top',\n  VAR_FG_SIZE: '--mdc-ripple-fg-size',\n  VAR_FG_SCALE: '--mdc-ripple-fg-scale',\n  VAR_FG_TRANSLATE_START: '--mdc-ripple-fg-translate-start',\n  VAR_FG_TRANSLATE_END: '--mdc-ripple-fg-translate-end'\n};\n\nvar numbers = {\n  PADDING: 10,\n  INITIAL_ORIGIN_SCALE: 0.6,\n  DEACTIVATION_TIMEOUT_MS: 225, // Corresponds to $mdc-ripple-translate-duration (i.e. activation animation duration)\n  FG_DEACTIVATION_MS: 150, // Corresponds to $mdc-ripple-fade-out-duration (i.e. deactivation animation duration)\n  TAP_DELAY_MS: 300 // Delay between touch and simulated mouse events on touch devices\n};\n\n\n// EXTERNAL MODULE: ../node_modules/@material/ripple/util.js\nvar util = __webpack_require__(\"joOv\");\n\n// CONCATENATED MODULE: ../node_modules/@material/ripple/foundation.js\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction foundation__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n\n/**\n * @typedef {{\n *   isActivated: (boolean|undefined),\n *   hasDeactivationUXRun: (boolean|undefined),\n *   wasActivatedByPointer: (boolean|undefined),\n *   wasElementMadeActive: (boolean|undefined),\n *   activationEvent: Event,\n *   isProgrammatic: (boolean|undefined)\n * }}\n */\nvar ActivationStateType = void 0;\n\n/**\n * @typedef {{\n *   activate: (string|undefined),\n *   deactivate: (string|undefined),\n *   focus: (string|undefined),\n *   blur: (string|undefined)\n * }}\n */\nvar ListenerInfoType = void 0;\n\n/**\n * @typedef {{\n *   activate: function(!Event),\n *   deactivate: function(!Event),\n *   focus: function(),\n *   blur: function()\n * }}\n */\nvar ListenersType = void 0;\n\n/**\n * @typedef {{\n *   x: number,\n *   y: number\n * }}\n */\nvar PointType = void 0;\n\n// Activation events registered on the root element of each instance for activation\nvar ACTIVATION_EVENT_TYPES = ['touchstart', 'pointerdown', 'mousedown', 'keydown'];\n\n// Deactivation events registered on documentElement when a pointer-related down event occurs\nvar POINTER_DEACTIVATION_EVENT_TYPES = ['touchend', 'pointerup', 'mouseup'];\n\n// Tracks activations that have occurred on the current frame, to avoid simultaneous nested activations\n/** @type {!Array<!EventTarget>} */\nvar activatedTargets = [];\n\n/**\n * @extends {MDCFoundation<!MDCRippleAdapter>}\n */\n\nvar foundation_MDCRippleFoundation = function (_MDCFoundation) {\n  _inherits(MDCRippleFoundation, _MDCFoundation);\n\n  _createClass(MDCRippleFoundation, null, [{\n    key: 'cssClasses',\n    get: function get() {\n      return cssClasses;\n    }\n  }, {\n    key: 'strings',\n    get: function get() {\n      return strings;\n    }\n  }, {\n    key: 'numbers',\n    get: function get() {\n      return numbers;\n    }\n  }, {\n    key: 'defaultAdapter',\n    get: function get() {\n      return {\n        browserSupportsCssVars: function browserSupportsCssVars() /* boolean - cached */{},\n        isUnbounded: function isUnbounded() /* boolean */{},\n        isSurfaceActive: function isSurfaceActive() /* boolean */{},\n        isSurfaceDisabled: function isSurfaceDisabled() /* boolean */{},\n        addClass: function addClass() /* className: string */{},\n        removeClass: function removeClass() /* className: string */{},\n        containsEventTarget: function containsEventTarget() /* target: !EventTarget */{},\n        registerInteractionHandler: function registerInteractionHandler() /* evtType: string, handler: EventListener */{},\n        deregisterInteractionHandler: function deregisterInteractionHandler() /* evtType: string, handler: EventListener */{},\n        registerDocumentInteractionHandler: function registerDocumentInteractionHandler() /* evtType: string, handler: EventListener */{},\n        deregisterDocumentInteractionHandler: function deregisterDocumentInteractionHandler() /* evtType: string, handler: EventListener */{},\n        registerResizeHandler: function registerResizeHandler() /* handler: EventListener */{},\n        deregisterResizeHandler: function deregisterResizeHandler() /* handler: EventListener */{},\n        updateCssVariable: function updateCssVariable() /* varName: string, value: string */{},\n        computeBoundingRect: function computeBoundingRect() /* ClientRect */{},\n        getWindowPageOffset: function getWindowPageOffset() /* {x: number, y: number} */{}\n      };\n    }\n  }]);\n\n  function MDCRippleFoundation(adapter) {\n    foundation__classCallCheck(this, MDCRippleFoundation);\n\n    /** @private {number} */\n    var _this = _possibleConstructorReturn(this, _MDCFoundation.call(this, _extends(MDCRippleFoundation.defaultAdapter, adapter)));\n\n    _this.layoutFrame_ = 0;\n\n    /** @private {!ClientRect} */\n    _this.frame_ = /** @type {!ClientRect} */{ width: 0, height: 0 };\n\n    /** @private {!ActivationStateType} */\n    _this.activationState_ = _this.defaultActivationState_();\n\n    /** @private {number} */\n    _this.initialSize_ = 0;\n\n    /** @private {number} */\n    _this.maxRadius_ = 0;\n\n    /** @private {function(!Event)} */\n    _this.activateHandler_ = function (e) {\n      return _this.activate_(e);\n    };\n\n    /** @private {function(!Event)} */\n    _this.deactivateHandler_ = function (e) {\n      return _this.deactivate_(e);\n    };\n\n    /** @private {function(?Event=)} */\n    _this.focusHandler_ = function () {\n      return _this.handleFocus();\n    };\n\n    /** @private {function(?Event=)} */\n    _this.blurHandler_ = function () {\n      return _this.handleBlur();\n    };\n\n    /** @private {!Function} */\n    _this.resizeHandler_ = function () {\n      return _this.layout();\n    };\n\n    /** @private {{left: number, top:number}} */\n    _this.unboundedCoords_ = {\n      left: 0,\n      top: 0\n    };\n\n    /** @private {number} */\n    _this.fgScale_ = 0;\n\n    /** @private {number} */\n    _this.activationTimer_ = 0;\n\n    /** @private {number} */\n    _this.fgDeactivationRemovalTimer_ = 0;\n\n    /** @private {boolean} */\n    _this.activationAnimationHasEnded_ = false;\n\n    /** @private {!Function} */\n    _this.activationTimerCallback_ = function () {\n      _this.activationAnimationHasEnded_ = true;\n      _this.runDeactivationUXLogicIfReady_();\n    };\n\n    /** @private {?Event} */\n    _this.previousActivationEvent_ = null;\n    return _this;\n  }\n\n  /**\n   * We compute this property so that we are not querying information about the client\n   * until the point in time where the foundation requests it. This prevents scenarios where\n   * client-side feature-detection may happen too early, such as when components are rendered on the server\n   * and then initialized at mount time on the client.\n   * @return {boolean}\n   * @private\n   */\n\n\n  MDCRippleFoundation.prototype.supportsPressRipple_ = function supportsPressRipple_() {\n    return this.adapter_.browserSupportsCssVars();\n  };\n\n  /**\n   * @return {!ActivationStateType}\n   */\n\n\n  MDCRippleFoundation.prototype.defaultActivationState_ = function defaultActivationState_() {\n    return {\n      isActivated: false,\n      hasDeactivationUXRun: false,\n      wasActivatedByPointer: false,\n      wasElementMadeActive: false,\n      activationEvent: null,\n      isProgrammatic: false\n    };\n  };\n\n  /** @override */\n\n\n  MDCRippleFoundation.prototype.init = function init() {\n    var _this2 = this;\n\n    var supportsPressRipple = this.supportsPressRipple_();\n\n    this.registerRootHandlers_(supportsPressRipple);\n\n    if (supportsPressRipple) {\n      var _MDCRippleFoundation$ = MDCRippleFoundation.cssClasses,\n          ROOT = _MDCRippleFoundation$.ROOT,\n          UNBOUNDED = _MDCRippleFoundation$.UNBOUNDED;\n\n      requestAnimationFrame(function () {\n        _this2.adapter_.addClass(ROOT);\n        if (_this2.adapter_.isUnbounded()) {\n          _this2.adapter_.addClass(UNBOUNDED);\n          // Unbounded ripples need layout logic applied immediately to set coordinates for both shade and ripple\n          _this2.layoutInternal_();\n        }\n      });\n    }\n  };\n\n  /** @override */\n\n\n  MDCRippleFoundation.prototype.destroy = function destroy() {\n    var _this3 = this;\n\n    if (this.supportsPressRipple_()) {\n      if (this.activationTimer_) {\n        clearTimeout(this.activationTimer_);\n        this.activationTimer_ = 0;\n        this.adapter_.removeClass(MDCRippleFoundation.cssClasses.FG_ACTIVATION);\n      }\n\n      if (this.fgDeactivationRemovalTimer_) {\n        clearTimeout(this.fgDeactivationRemovalTimer_);\n        this.fgDeactivationRemovalTimer_ = 0;\n        this.adapter_.removeClass(MDCRippleFoundation.cssClasses.FG_DEACTIVATION);\n      }\n\n      var _MDCRippleFoundation$2 = MDCRippleFoundation.cssClasses,\n          ROOT = _MDCRippleFoundation$2.ROOT,\n          UNBOUNDED = _MDCRippleFoundation$2.UNBOUNDED;\n\n      requestAnimationFrame(function () {\n        _this3.adapter_.removeClass(ROOT);\n        _this3.adapter_.removeClass(UNBOUNDED);\n        _this3.removeCssVars_();\n      });\n    }\n\n    this.deregisterRootHandlers_();\n    this.deregisterDeactivationHandlers_();\n  };\n\n  /**\n   * @param {boolean} supportsPressRipple Passed from init to save a redundant function call\n   * @private\n   */\n\n\n  MDCRippleFoundation.prototype.registerRootHandlers_ = function registerRootHandlers_(supportsPressRipple) {\n    var _this4 = this;\n\n    if (supportsPressRipple) {\n      ACTIVATION_EVENT_TYPES.forEach(function (type) {\n        _this4.adapter_.registerInteractionHandler(type, _this4.activateHandler_);\n      });\n      if (this.adapter_.isUnbounded()) {\n        this.adapter_.registerResizeHandler(this.resizeHandler_);\n      }\n    }\n\n    this.adapter_.registerInteractionHandler('focus', this.focusHandler_);\n    this.adapter_.registerInteractionHandler('blur', this.blurHandler_);\n  };\n\n  /**\n   * @param {!Event} e\n   * @private\n   */\n\n\n  MDCRippleFoundation.prototype.registerDeactivationHandlers_ = function registerDeactivationHandlers_(e) {\n    var _this5 = this;\n\n    if (e.type === 'keydown') {\n      this.adapter_.registerInteractionHandler('keyup', this.deactivateHandler_);\n    } else {\n      POINTER_DEACTIVATION_EVENT_TYPES.forEach(function (type) {\n        _this5.adapter_.registerDocumentInteractionHandler(type, _this5.deactivateHandler_);\n      });\n    }\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.deregisterRootHandlers_ = function deregisterRootHandlers_() {\n    var _this6 = this;\n\n    ACTIVATION_EVENT_TYPES.forEach(function (type) {\n      _this6.adapter_.deregisterInteractionHandler(type, _this6.activateHandler_);\n    });\n    this.adapter_.deregisterInteractionHandler('focus', this.focusHandler_);\n    this.adapter_.deregisterInteractionHandler('blur', this.blurHandler_);\n\n    if (this.adapter_.isUnbounded()) {\n      this.adapter_.deregisterResizeHandler(this.resizeHandler_);\n    }\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.deregisterDeactivationHandlers_ = function deregisterDeactivationHandlers_() {\n    var _this7 = this;\n\n    this.adapter_.deregisterInteractionHandler('keyup', this.deactivateHandler_);\n    POINTER_DEACTIVATION_EVENT_TYPES.forEach(function (type) {\n      _this7.adapter_.deregisterDocumentInteractionHandler(type, _this7.deactivateHandler_);\n    });\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.removeCssVars_ = function removeCssVars_() {\n    var _this8 = this;\n\n    var strings = MDCRippleFoundation.strings;\n\n    Object.keys(strings).forEach(function (k) {\n      if (k.indexOf('VAR_') === 0) {\n        _this8.adapter_.updateCssVariable(strings[k], null);\n      }\n    });\n  };\n\n  /**\n   * @param {?Event} e\n   * @private\n   */\n\n\n  MDCRippleFoundation.prototype.activate_ = function activate_(e) {\n    var _this9 = this;\n\n    if (this.adapter_.isSurfaceDisabled()) {\n      return;\n    }\n\n    var activationState = this.activationState_;\n    if (activationState.isActivated) {\n      return;\n    }\n\n    // Avoid reacting to follow-on events fired by touch device after an already-processed user interaction\n    var previousActivationEvent = this.previousActivationEvent_;\n    var isSameInteraction = previousActivationEvent && e && previousActivationEvent.type !== e.type;\n    if (isSameInteraction) {\n      return;\n    }\n\n    activationState.isActivated = true;\n    activationState.isProgrammatic = e === null;\n    activationState.activationEvent = e;\n    activationState.wasActivatedByPointer = activationState.isProgrammatic ? false : e.type === 'mousedown' || e.type === 'touchstart' || e.type === 'pointerdown';\n\n    var hasActivatedChild = e && activatedTargets.length > 0 && activatedTargets.some(function (target) {\n      return _this9.adapter_.containsEventTarget(target);\n    });\n    if (hasActivatedChild) {\n      // Immediately reset activation state, while preserving logic that prevents touch follow-on events\n      this.resetActivationState_();\n      return;\n    }\n\n    if (e) {\n      activatedTargets.push( /** @type {!EventTarget} */e.target);\n      this.registerDeactivationHandlers_(e);\n    }\n\n    activationState.wasElementMadeActive = this.checkElementMadeActive_(e);\n    if (activationState.wasElementMadeActive) {\n      this.animateActivation_();\n    }\n\n    requestAnimationFrame(function () {\n      // Reset array on next frame after the current event has had a chance to bubble to prevent ancestor ripples\n      activatedTargets = [];\n\n      if (!activationState.wasElementMadeActive && (e.key === ' ' || e.keyCode === 32)) {\n        // If space was pressed, try again within an rAF call to detect :active, because different UAs report\n        // active states inconsistently when they're called within event handling code:\n        // - https://bugs.chromium.org/p/chromium/issues/detail?id=635971\n        // - https://bugzilla.mozilla.org/show_bug.cgi?id=1293741\n        // We try first outside rAF to support Edge, which does not exhibit this problem, but will crash if a CSS\n        // variable is set within a rAF callback for a submit button interaction (#2241).\n        activationState.wasElementMadeActive = _this9.checkElementMadeActive_(e);\n        if (activationState.wasElementMadeActive) {\n          _this9.animateActivation_();\n        }\n      }\n\n      if (!activationState.wasElementMadeActive) {\n        // Reset activation state immediately if element was not made active.\n        _this9.activationState_ = _this9.defaultActivationState_();\n      }\n    });\n  };\n\n  /**\n   * @param {?Event} e\n   * @private\n   */\n\n\n  MDCRippleFoundation.prototype.checkElementMadeActive_ = function checkElementMadeActive_(e) {\n    return e && e.type === 'keydown' ? this.adapter_.isSurfaceActive() : true;\n  };\n\n  /**\n   * @param {?Event=} event Optional event containing position information.\n   */\n\n\n  MDCRippleFoundation.prototype.activate = function activate() {\n    var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n\n    this.activate_(event);\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.animateActivation_ = function animateActivation_() {\n    var _this10 = this;\n\n    var _MDCRippleFoundation$3 = MDCRippleFoundation.strings,\n        VAR_FG_TRANSLATE_START = _MDCRippleFoundation$3.VAR_FG_TRANSLATE_START,\n        VAR_FG_TRANSLATE_END = _MDCRippleFoundation$3.VAR_FG_TRANSLATE_END;\n    var _MDCRippleFoundation$4 = MDCRippleFoundation.cssClasses,\n        FG_DEACTIVATION = _MDCRippleFoundation$4.FG_DEACTIVATION,\n        FG_ACTIVATION = _MDCRippleFoundation$4.FG_ACTIVATION;\n    var DEACTIVATION_TIMEOUT_MS = MDCRippleFoundation.numbers.DEACTIVATION_TIMEOUT_MS;\n\n\n    this.layoutInternal_();\n\n    var translateStart = '';\n    var translateEnd = '';\n\n    if (!this.adapter_.isUnbounded()) {\n      var _getFgTranslationCoor = this.getFgTranslationCoordinates_(),\n          startPoint = _getFgTranslationCoor.startPoint,\n          endPoint = _getFgTranslationCoor.endPoint;\n\n      translateStart = startPoint.x + 'px, ' + startPoint.y + 'px';\n      translateEnd = endPoint.x + 'px, ' + endPoint.y + 'px';\n    }\n\n    this.adapter_.updateCssVariable(VAR_FG_TRANSLATE_START, translateStart);\n    this.adapter_.updateCssVariable(VAR_FG_TRANSLATE_END, translateEnd);\n    // Cancel any ongoing activation/deactivation animations\n    clearTimeout(this.activationTimer_);\n    clearTimeout(this.fgDeactivationRemovalTimer_);\n    this.rmBoundedActivationClasses_();\n    this.adapter_.removeClass(FG_DEACTIVATION);\n\n    // Force layout in order to re-trigger the animation.\n    this.adapter_.computeBoundingRect();\n    this.adapter_.addClass(FG_ACTIVATION);\n    this.activationTimer_ = setTimeout(function () {\n      return _this10.activationTimerCallback_();\n    }, DEACTIVATION_TIMEOUT_MS);\n  };\n\n  /**\n   * @private\n   * @return {{startPoint: PointType, endPoint: PointType}}\n   */\n\n\n  MDCRippleFoundation.prototype.getFgTranslationCoordinates_ = function getFgTranslationCoordinates_() {\n    var _activationState_ = this.activationState_,\n        activationEvent = _activationState_.activationEvent,\n        wasActivatedByPointer = _activationState_.wasActivatedByPointer;\n\n\n    var startPoint = void 0;\n    if (wasActivatedByPointer) {\n      startPoint = Object(util[\"getNormalizedEventCoords\"])(\n      /** @type {!Event} */activationEvent, this.adapter_.getWindowPageOffset(), this.adapter_.computeBoundingRect());\n    } else {\n      startPoint = {\n        x: this.frame_.width / 2,\n        y: this.frame_.height / 2\n      };\n    }\n    // Center the element around the start point.\n    startPoint = {\n      x: startPoint.x - this.initialSize_ / 2,\n      y: startPoint.y - this.initialSize_ / 2\n    };\n\n    var endPoint = {\n      x: this.frame_.width / 2 - this.initialSize_ / 2,\n      y: this.frame_.height / 2 - this.initialSize_ / 2\n    };\n\n    return { startPoint: startPoint, endPoint: endPoint };\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.runDeactivationUXLogicIfReady_ = function runDeactivationUXLogicIfReady_() {\n    var _this11 = this;\n\n    // This method is called both when a pointing device is released, and when the activation animation ends.\n    // The deactivation animation should only run after both of those occur.\n    var FG_DEACTIVATION = MDCRippleFoundation.cssClasses.FG_DEACTIVATION;\n    var _activationState_2 = this.activationState_,\n        hasDeactivationUXRun = _activationState_2.hasDeactivationUXRun,\n        isActivated = _activationState_2.isActivated;\n\n    var activationHasEnded = hasDeactivationUXRun || !isActivated;\n\n    if (activationHasEnded && this.activationAnimationHasEnded_) {\n      this.rmBoundedActivationClasses_();\n      this.adapter_.addClass(FG_DEACTIVATION);\n      this.fgDeactivationRemovalTimer_ = setTimeout(function () {\n        _this11.adapter_.removeClass(FG_DEACTIVATION);\n      }, numbers.FG_DEACTIVATION_MS);\n    }\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.rmBoundedActivationClasses_ = function rmBoundedActivationClasses_() {\n    var FG_ACTIVATION = MDCRippleFoundation.cssClasses.FG_ACTIVATION;\n\n    this.adapter_.removeClass(FG_ACTIVATION);\n    this.activationAnimationHasEnded_ = false;\n    this.adapter_.computeBoundingRect();\n  };\n\n  MDCRippleFoundation.prototype.resetActivationState_ = function resetActivationState_() {\n    var _this12 = this;\n\n    this.previousActivationEvent_ = this.activationState_.activationEvent;\n    this.activationState_ = this.defaultActivationState_();\n    // Touch devices may fire additional events for the same interaction within a short time.\n    // Store the previous event until it's safe to assume that subsequent events are for new interactions.\n    setTimeout(function () {\n      return _this12.previousActivationEvent_ = null;\n    }, MDCRippleFoundation.numbers.TAP_DELAY_MS);\n  };\n\n  /**\n   * @param {?Event} e\n   * @private\n   */\n\n\n  MDCRippleFoundation.prototype.deactivate_ = function deactivate_(e) {\n    var _this13 = this;\n\n    var activationState = this.activationState_;\n    // This can happen in scenarios such as when you have a keyup event that blurs the element.\n    if (!activationState.isActivated) {\n      return;\n    }\n\n    var state = /** @type {!ActivationStateType} */_extends({}, activationState);\n\n    if (activationState.isProgrammatic) {\n      var evtObject = null;\n      requestAnimationFrame(function () {\n        return _this13.animateDeactivation_(evtObject, state);\n      });\n      this.resetActivationState_();\n    } else {\n      this.deregisterDeactivationHandlers_();\n      requestAnimationFrame(function () {\n        _this13.activationState_.hasDeactivationUXRun = true;\n        _this13.animateDeactivation_(e, state);\n        _this13.resetActivationState_();\n      });\n    }\n  };\n\n  /**\n   * @param {?Event=} event Optional event containing position information.\n   */\n\n\n  MDCRippleFoundation.prototype.deactivate = function deactivate() {\n    var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n\n    this.deactivate_(event);\n  };\n\n  /**\n   * @param {Event} e\n   * @param {!ActivationStateType} options\n   * @private\n   */\n\n\n  MDCRippleFoundation.prototype.animateDeactivation_ = function animateDeactivation_(e, _ref) {\n    var wasActivatedByPointer = _ref.wasActivatedByPointer,\n        wasElementMadeActive = _ref.wasElementMadeActive;\n\n    if (wasActivatedByPointer || wasElementMadeActive) {\n      this.runDeactivationUXLogicIfReady_();\n    }\n  };\n\n  MDCRippleFoundation.prototype.layout = function layout() {\n    var _this14 = this;\n\n    if (this.layoutFrame_) {\n      cancelAnimationFrame(this.layoutFrame_);\n    }\n    this.layoutFrame_ = requestAnimationFrame(function () {\n      _this14.layoutInternal_();\n      _this14.layoutFrame_ = 0;\n    });\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.layoutInternal_ = function layoutInternal_() {\n    var _this15 = this;\n\n    this.frame_ = this.adapter_.computeBoundingRect();\n    var maxDim = Math.max(this.frame_.height, this.frame_.width);\n\n    // Surface diameter is treated differently for unbounded vs. bounded ripples.\n    // Unbounded ripple diameter is calculated smaller since the surface is expected to already be padded appropriately\n    // to extend the hitbox, and the ripple is expected to meet the edges of the padded hitbox (which is typically\n    // square). Bounded ripples, on the other hand, are fully expected to expand beyond the surface's longest diameter\n    // (calculated based on the diagonal plus a constant padding), and are clipped at the surface's border via\n    // `overflow: hidden`.\n    var getBoundedRadius = function getBoundedRadius() {\n      var hypotenuse = Math.sqrt(Math.pow(_this15.frame_.width, 2) + Math.pow(_this15.frame_.height, 2));\n      return hypotenuse + MDCRippleFoundation.numbers.PADDING;\n    };\n\n    this.maxRadius_ = this.adapter_.isUnbounded() ? maxDim : getBoundedRadius();\n\n    // Ripple is sized as a fraction of the largest dimension of the surface, then scales up using a CSS scale transform\n    this.initialSize_ = maxDim * MDCRippleFoundation.numbers.INITIAL_ORIGIN_SCALE;\n    this.fgScale_ = this.maxRadius_ / this.initialSize_;\n\n    this.updateLayoutCssVars_();\n  };\n\n  /** @private */\n\n\n  MDCRippleFoundation.prototype.updateLayoutCssVars_ = function updateLayoutCssVars_() {\n    var _MDCRippleFoundation$5 = MDCRippleFoundation.strings,\n        VAR_FG_SIZE = _MDCRippleFoundation$5.VAR_FG_SIZE,\n        VAR_LEFT = _MDCRippleFoundation$5.VAR_LEFT,\n        VAR_TOP = _MDCRippleFoundation$5.VAR_TOP,\n        VAR_FG_SCALE = _MDCRippleFoundation$5.VAR_FG_SCALE;\n\n\n    this.adapter_.updateCssVariable(VAR_FG_SIZE, this.initialSize_ + 'px');\n    this.adapter_.updateCssVariable(VAR_FG_SCALE, this.fgScale_);\n\n    if (this.adapter_.isUnbounded()) {\n      this.unboundedCoords_ = {\n        left: Math.round(this.frame_.width / 2 - this.initialSize_ / 2),\n        top: Math.round(this.frame_.height / 2 - this.initialSize_ / 2)\n      };\n\n      this.adapter_.updateCssVariable(VAR_LEFT, this.unboundedCoords_.left + 'px');\n      this.adapter_.updateCssVariable(VAR_TOP, this.unboundedCoords_.top + 'px');\n    }\n  };\n\n  /** @param {boolean} unbounded */\n\n\n  MDCRippleFoundation.prototype.setUnbounded = function setUnbounded(unbounded) {\n    var UNBOUNDED = MDCRippleFoundation.cssClasses.UNBOUNDED;\n\n    if (unbounded) {\n      this.adapter_.addClass(UNBOUNDED);\n    } else {\n      this.adapter_.removeClass(UNBOUNDED);\n    }\n  };\n\n  MDCRippleFoundation.prototype.handleFocus = function handleFocus() {\n    var _this16 = this;\n\n    requestAnimationFrame(function () {\n      return _this16.adapter_.addClass(MDCRippleFoundation.cssClasses.BG_FOCUSED);\n    });\n  };\n\n  MDCRippleFoundation.prototype.handleBlur = function handleBlur() {\n    var _this17 = this;\n\n    requestAnimationFrame(function () {\n      return _this17.adapter_.removeClass(MDCRippleFoundation.cssClasses.BG_FOCUSED);\n    });\n  };\n\n  return MDCRippleFoundation;\n}(foundation[\"a\" /* default */]);\n\n/* harmony default export */ var ripple_foundation = (foundation_MDCRippleFoundation);\n// CONCATENATED MODULE: ../node_modules/@material/ripple/index.js\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"MDCRipple\", function() { return ripple_MDCRipple; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"RippleCapableSurface\", function() { return RippleCapableSurface; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"MDCRippleFoundation\", function() { return ripple_foundation; });\n/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, \"util\", function() { return util; });\nvar ripple__createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nfunction ripple__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction ripple__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction ripple__inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\n/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n\n\n\n\n/**\n * @extends MDCComponent<!MDCRippleFoundation>\n */\n\nvar ripple_MDCRipple = function (_MDCComponent) {\n  ripple__inherits(MDCRipple, _MDCComponent);\n\n  /** @param {...?} args */\n  function MDCRipple() {\n    ripple__classCallCheck(this, MDCRipple);\n\n    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    /** @type {boolean} */\n    var _this = ripple__possibleConstructorReturn(this, _MDCComponent.call.apply(_MDCComponent, [this].concat(args)));\n\n    _this.disabled = false;\n\n    /** @private {boolean} */\n    _this.unbounded_;\n    return _this;\n  }\n\n  /**\n   * @param {!Element} root\n   * @param {{isUnbounded: (boolean|undefined)}=} options\n   * @return {!MDCRipple}\n   */\n\n\n  MDCRipple.attachTo = function attachTo(root) {\n    var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},\n        _ref$isUnbounded = _ref.isUnbounded,\n        isUnbounded = _ref$isUnbounded === undefined ? undefined : _ref$isUnbounded;\n\n    var ripple = new MDCRipple(root);\n    // Only override unbounded behavior if option is explicitly specified\n    if (isUnbounded !== undefined) {\n      ripple.unbounded = /** @type {boolean} */isUnbounded;\n    }\n    return ripple;\n  };\n\n  /**\n   * @param {!RippleCapableSurface} instance\n   * @return {!MDCRippleAdapter}\n   */\n\n\n  MDCRipple.createAdapter = function createAdapter(instance) {\n    var MATCHES = util[\"getMatchesProperty\"](HTMLElement.prototype);\n\n    return {\n      browserSupportsCssVars: function browserSupportsCssVars() {\n        return util[\"supportsCssVariables\"](window);\n      },\n      isUnbounded: function isUnbounded() {\n        return instance.unbounded;\n      },\n      isSurfaceActive: function isSurfaceActive() {\n        return instance.root_[MATCHES](':active');\n      },\n      isSurfaceDisabled: function isSurfaceDisabled() {\n        return instance.disabled;\n      },\n      addClass: function addClass(className) {\n        return instance.root_.classList.add(className);\n      },\n      removeClass: function removeClass(className) {\n        return instance.root_.classList.remove(className);\n      },\n      containsEventTarget: function containsEventTarget(target) {\n        return instance.root_.contains(target);\n      },\n      registerInteractionHandler: function registerInteractionHandler(evtType, handler) {\n        return instance.root_.addEventListener(evtType, handler, util[\"applyPassive\"]());\n      },\n      deregisterInteractionHandler: function deregisterInteractionHandler(evtType, handler) {\n        return instance.root_.removeEventListener(evtType, handler, util[\"applyPassive\"]());\n      },\n      registerDocumentInteractionHandler: function registerDocumentInteractionHandler(evtType, handler) {\n        return document.documentElement.addEventListener(evtType, handler, util[\"applyPassive\"]());\n      },\n      deregisterDocumentInteractionHandler: function deregisterDocumentInteractionHandler(evtType, handler) {\n        return document.documentElement.removeEventListener(evtType, handler, util[\"applyPassive\"]());\n      },\n      registerResizeHandler: function registerResizeHandler(handler) {\n        return window.addEventListener('resize', handler);\n      },\n      deregisterResizeHandler: function deregisterResizeHandler(handler) {\n        return window.removeEventListener('resize', handler);\n      },\n      updateCssVariable: function updateCssVariable(varName, value) {\n        return instance.root_.style.setProperty(varName, value);\n      },\n      computeBoundingRect: function computeBoundingRect() {\n        return instance.root_.getBoundingClientRect();\n      },\n      getWindowPageOffset: function getWindowPageOffset() {\n        return { x: window.pageXOffset, y: window.pageYOffset };\n      }\n    };\n  };\n\n  /** @return {boolean} */\n\n\n  /**\n   * Closure Compiler throws an access control error when directly accessing a\n   * protected or private property inside a getter/setter, like unbounded above.\n   * By accessing the protected property inside a method, we solve that problem.\n   * That's why this function exists.\n   * @private\n   */\n  MDCRipple.prototype.setUnbounded_ = function setUnbounded_() {\n    this.foundation_.setUnbounded(this.unbounded_);\n  };\n\n  MDCRipple.prototype.activate = function activate() {\n    this.foundation_.activate();\n  };\n\n  MDCRipple.prototype.deactivate = function deactivate() {\n    this.foundation_.deactivate();\n  };\n\n  MDCRipple.prototype.layout = function layout() {\n    this.foundation_.layout();\n  };\n\n  /**\n   * @return {!MDCRippleFoundation}\n   * @override\n   */\n\n\n  MDCRipple.prototype.getDefaultFoundation = function getDefaultFoundation() {\n    return new ripple_foundation(MDCRipple.createAdapter(this));\n  };\n\n  /** @override */\n\n\n  MDCRipple.prototype.initialSyncWithDOM = function initialSyncWithDOM() {\n    this.unbounded = 'mdcRippleIsUnbounded' in this.root_.dataset;\n  };\n\n  ripple__createClass(MDCRipple, [{\n    key: 'unbounded',\n    get: function get() {\n      return this.unbounded_;\n    }\n\n    /** @param {boolean} unbounded */\n    ,\n    set: function set(unbounded) {\n      this.unbounded_ = Boolean(unbounded);\n      this.setUnbounded_();\n    }\n  }]);\n\n  return MDCRipple;\n}(component[\"a\" /* default */]);\n\n/**\n * See Material Design spec for more details on when to use ripples.\n * https://material.io/guidelines/motion/choreography.html#choreography-creation\n * @record\n */\n\n\nvar RippleCapableSurface = function RippleCapableSurface() {\n  ripple__classCallCheck(this, RippleCapableSurface);\n};\n\n/** @protected {!Element} */\n\n\nRippleCapableSurface.prototype.root_;\n\n/**\n * Whether or not the ripple bleeds out of the bounds of the element.\n * @type {boolean|undefined}\n */\nRippleCapableSurface.prototype.unbounded;\n\n/**\n * Whether or not the ripple is attached to a disabled component.\n * @type {boolean|undefined}\n */\nRippleCapableSurface.prototype.disabled;\n\n\n\n/***/ }),\n\n/***/ \"wGjj\":\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\nObject.defineProperty(__webpack_exports__, \"__esModule\", { value: true });\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_whatwg_fetch__ = __webpack_require__(\"cpTA\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_whatwg_fetch___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_whatwg_fetch__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_promise_polyfill_lib_polyfill__ = __webpack_require__(\"Zbst\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_promise_polyfill_lib_polyfill___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_promise_polyfill_lib_polyfill__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_core_js_fn_array_find__ = __webpack_require__(\"An0w\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2_core_js_fn_array_find___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_2_core_js_fn_array_find__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_core_js_fn_array_find_index__ = __webpack_require__(\"t8Cs\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3_core_js_fn_array_find_index___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_3_core_js_fn_array_find_index__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_core_js_fn_object_assign__ = __webpack_require__(\"WsyM\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4_core_js_fn_object_assign___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_4_core_js_fn_object_assign__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_core_js_fn_string_starts_with__ = __webpack_require__(\"JrO0\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5_core_js_fn_string_starts_with___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_5_core_js_fn_string_starts_with__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_core_js_fn_string_repeat__ = __webpack_require__(\"8z9W\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6_core_js_fn_string_repeat___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_6_core_js_fn_string_repeat__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_core_js_fn_symbol__ = __webpack_require__(\"eILw\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7_core_js_fn_symbol___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_7_core_js_fn_symbol__);\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_core_js_fn_symbol_iterator__ = __webpack_require__(\"TiUH\");\n/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8_core_js_fn_symbol_iterator___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_8_core_js_fn_symbol_iterator__);\n\n\n\n\n\n\n\n\n\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n\n/***/ }),\n\n/***/ \"wWX/\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n// 19.1.3.6 Object.prototype.toString()\n\nvar classof = __webpack_require__(\"TDtx\");\nvar test = {};\ntest[__webpack_require__(\"Teay\")('toStringTag')] = 'z';\nif (test + '' != '[object z]') {\n  __webpack_require__(\"HnsU\")(Object.prototype, 'toString', function toString() {\n    return '[object ' + classof(this) + ']';\n  }, true);\n}\n\n/***/ }),\n\n/***/ \"wfAA\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar _interopRequireDefault = __webpack_require__(\"SpGf\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.Switch = void 0;\n\nvar _classCallCheck2 = _interopRequireDefault(__webpack_require__(\"0fcM\"));\n\nvar _createClass2 = _interopRequireDefault(__webpack_require__(\"P8NW\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(__webpack_require__(\"0421\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(__webpack_require__(\"UJE0\"));\n\nvar _get2 = _interopRequireDefault(__webpack_require__(\"J5U+\"));\n\nvar _inherits2 = _interopRequireDefault(__webpack_require__(\"d4H2\"));\n\nvar _switch = __webpack_require__(\"nQ/l\");\n\nvar _preact = __webpack_require__(\"KM04\");\n\nvar _MaterialComponent2 = _interopRequireDefault(__webpack_require__(\"uc5p\"));\n\nvar __rest = void 0 && (void 0).__rest || function (s, e) {\n  var t = {};\n\n  for (var p in s) {\n    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];\n  }\n\n  if (s != null && typeof Object.getOwnPropertySymbols === \"function\") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n    if (e.indexOf(p[i]) < 0) t[p[i]] = s[p[i]];\n  }\n  return t;\n};\n\nvar Switch =\n/*#__PURE__*/\nfunction (_MaterialComponent) {\n  (0, _inherits2.default)(Switch, _MaterialComponent);\n\n  function Switch() {\n    var _this;\n\n    (0, _classCallCheck2.default)(this, Switch);\n    _this = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(Switch).apply(this, arguments));\n    _this.componentName = 'switch';\n    _this.mdcProps = ['disabled', 'checked'];\n    _this.mdcNotifyProps = ['disabled', 'checked'];\n    return _this;\n  }\n\n  (0, _createClass2.default)(Switch, [{\n    key: \"componentDidMount\",\n    value: function componentDidMount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(Switch.prototype), \"componentDidMount\", this).call(this);\n\n      if (this.control) {\n        this.MDComponent = new _switch.MDCSwitch(this.control);\n      }\n    }\n  }, {\n    key: \"componentWillUnmount\",\n    value: function componentWillUnmount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(Switch.prototype), \"componentWillUnmount\", this).call(this);\n\n      if (this.MDComponent) {\n        this.MDComponent.destroy();\n      }\n    }\n  }, {\n    key: \"materialDom\",\n    value: function materialDom(allprops) {\n      var className = allprops.className,\n          props = __rest(allprops, [\"className\"]);\n\n      return (0, _preact.h)(\"div\", {\n        className: className,\n        ref: this.setControlRef\n      }, (0, _preact.h)(\"div\", {\n        class: \"mdc-switch__track\"\n      }), (0, _preact.h)(\"div\", {\n        class: \"mdc-switch__thumb-underlay\"\n      }, (0, _preact.h)(\"div\", {\n        class: \"mdc-switch__thumb\"\n      }, (0, _preact.h)(\"input\", _extends({\n        type: \"checkbox\",\n        id: \"basic-switch\",\n        class: \"mdc-switch__native-control\",\n        role: \"switch\"\n      }, props)))));\n    }\n  }]);\n  return Switch;\n}(_MaterialComponent2.default);\n\nexports.Switch = Switch;\nvar _default = Switch;\nexports.default = _default;\n//# sourceMappingURL=index.js.map\n\n/***/ }),\n\n/***/ \"wogX\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*!\n  Copyright (c) 2017 Jed Watson.\n  Licensed under the MIT License (MIT), see\n  http://jedwatson.github.io/classnames\n*/\n/* global define */\n\n(function () {\n\t'use strict';\n\n\tvar hasOwn = {}.hasOwnProperty;\n\n\tfunction classNames() {\n\t\tvar classes = [];\n\n\t\tfor (var i = 0; i < arguments.length; i++) {\n\t\t\tvar arg = arguments[i];\n\t\t\tif (!arg) continue;\n\n\t\t\tvar argType = typeof arg;\n\n\t\t\tif (argType === 'string' || argType === 'number') {\n\t\t\t\tclasses.push(this && this[arg] || arg);\n\t\t\t} else if (Array.isArray(arg)) {\n\t\t\t\tclasses.push(classNames.apply(this, arg));\n\t\t\t} else if (argType === 'object') {\n\t\t\t\tfor (var key in arg) {\n\t\t\t\t\tif (hasOwn.call(arg, key) && arg[key]) {\n\t\t\t\t\t\tclasses.push(this && this[key] || key);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn classes.join(' ');\n\t}\n\n\tif (typeof module !== 'undefined' && module.exports) {\n\t\tclassNames.default = classNames;\n\t\tmodule.exports = classNames;\n\t} else if (true) {\n\t\t// register as 'classnames', consistent with npm package name\n\t\t!(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function () {\n\t\t\treturn classNames;\n\t\t}).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),\n\t\t\t\t__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));\n\t} else {\n\t\twindow.classNames = classNames;\n\t}\n})();\n\n/***/ }),\n\n/***/ \"xHqp\":\n/***/ (function(module, exports, __webpack_require__) {\n\n\"use strict\";\n\n// ECMAScript 6 symbols shim\n\nvar global = __webpack_require__(\"l7GE\");\nvar has = __webpack_require__(\"5dDi\");\nvar DESCRIPTORS = __webpack_require__(\"Luod\");\nvar $export = __webpack_require__(\"Rhd1\");\nvar redefine = __webpack_require__(\"HnsU\");\nvar META = __webpack_require__(\"7Cjd\").KEY;\nvar $fails = __webpack_require__(\"xvHV\");\nvar shared = __webpack_require__(\"M/ML\");\nvar setToStringTag = __webpack_require__(\"Oqvp\");\nvar uid = __webpack_require__(\"nzN6\");\nvar wks = __webpack_require__(\"Teay\");\nvar wksExt = __webpack_require__(\"5/Vk\");\nvar wksDefine = __webpack_require__(\"rrqr\");\nvar enumKeys = __webpack_require__(\"kdDS\");\nvar isArray = __webpack_require__(\"hOGE\");\nvar anObject = __webpack_require__(\"Aoj9\");\nvar isObject = __webpack_require__(\"A7+C\");\nvar toIObject = __webpack_require__(\"SFi4\");\nvar toPrimitive = __webpack_require__(\"YBFa\");\nvar createDesc = __webpack_require__(\"OWuH\");\nvar _create = __webpack_require__(\"GkV+\");\nvar gOPNExt = __webpack_require__(\"y/4D\");\nvar $GOPD = __webpack_require__(\"hz11\");\nvar $DP = __webpack_require__(\"cb3v\");\nvar $keys = __webpack_require__(\"/CHd\");\nvar gOPD = $GOPD.f;\nvar dP = $DP.f;\nvar gOPN = gOPNExt.f;\nvar $Symbol = global.Symbol;\nvar $JSON = global.JSON;\nvar _stringify = $JSON && $JSON.stringify;\nvar PROTOTYPE = 'prototype';\nvar HIDDEN = wks('_hidden');\nvar TO_PRIMITIVE = wks('toPrimitive');\nvar isEnum = {}.propertyIsEnumerable;\nvar SymbolRegistry = shared('symbol-registry');\nvar AllSymbols = shared('symbols');\nvar OPSymbols = shared('op-symbols');\nvar ObjectProto = Object[PROTOTYPE];\nvar USE_NATIVE = typeof $Symbol == 'function';\nvar QObject = global.QObject;\n// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173\nvar setter = !QObject || !QObject[PROTOTYPE] || !QObject[PROTOTYPE].findChild;\n\n// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687\nvar setSymbolDesc = DESCRIPTORS && $fails(function () {\n  return _create(dP({}, 'a', {\n    get: function get() {\n      return dP(this, 'a', { value: 7 }).a;\n    }\n  })).a != 7;\n}) ? function (it, key, D) {\n  var protoDesc = gOPD(ObjectProto, key);\n  if (protoDesc) delete ObjectProto[key];\n  dP(it, key, D);\n  if (protoDesc && it !== ObjectProto) dP(ObjectProto, key, protoDesc);\n} : dP;\n\nvar wrap = function wrap(tag) {\n  var sym = AllSymbols[tag] = _create($Symbol[PROTOTYPE]);\n  sym._k = tag;\n  return sym;\n};\n\nvar isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) {\n  return typeof it == 'symbol';\n} : function (it) {\n  return it instanceof $Symbol;\n};\n\nvar $defineProperty = function defineProperty(it, key, D) {\n  if (it === ObjectProto) $defineProperty(OPSymbols, key, D);\n  anObject(it);\n  key = toPrimitive(key, true);\n  anObject(D);\n  if (has(AllSymbols, key)) {\n    if (!D.enumerable) {\n      if (!has(it, HIDDEN)) dP(it, HIDDEN, createDesc(1, {}));\n      it[HIDDEN][key] = true;\n    } else {\n      if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false;\n      D = _create(D, { enumerable: createDesc(0, false) });\n    }return setSymbolDesc(it, key, D);\n  }return dP(it, key, D);\n};\nvar $defineProperties = function defineProperties(it, P) {\n  anObject(it);\n  var keys = enumKeys(P = toIObject(P));\n  var i = 0;\n  var l = keys.length;\n  var key;\n  while (l > i) {\n    $defineProperty(it, key = keys[i++], P[key]);\n  }return it;\n};\nvar $create = function create(it, P) {\n  return P === undefined ? _create(it) : $defineProperties(_create(it), P);\n};\nvar $propertyIsEnumerable = function propertyIsEnumerable(key) {\n  var E = isEnum.call(this, key = toPrimitive(key, true));\n  if (this === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return false;\n  return E || !has(this, key) || !has(AllSymbols, key) || has(this, HIDDEN) && this[HIDDEN][key] ? E : true;\n};\nvar $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) {\n  it = toIObject(it);\n  key = toPrimitive(key, true);\n  if (it === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return;\n  var D = gOPD(it, key);\n  if (D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true;\n  return D;\n};\nvar $getOwnPropertyNames = function getOwnPropertyNames(it) {\n  var names = gOPN(toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (!has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key);\n  }return result;\n};\nvar $getOwnPropertySymbols = function getOwnPropertySymbols(it) {\n  var IS_OP = it === ObjectProto;\n  var names = gOPN(IS_OP ? OPSymbols : toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectProto, key) : true)) result.push(AllSymbols[key]);\n  }return result;\n};\n\n// 19.4.1.1 Symbol([description])\nif (!USE_NATIVE) {\n  $Symbol = function Symbol() {\n    if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!');\n    var tag = uid(arguments.length > 0 ? arguments[0] : undefined);\n    var $set = function $set(value) {\n      if (this === ObjectProto) $set.call(OPSymbols, value);\n      if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;\n      setSymbolDesc(this, tag, createDesc(1, value));\n    };\n    if (DESCRIPTORS && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set });\n    return wrap(tag);\n  };\n  redefine($Symbol[PROTOTYPE], 'toString', function toString() {\n    return this._k;\n  });\n\n  $GOPD.f = $getOwnPropertyDescriptor;\n  $DP.f = $defineProperty;\n  __webpack_require__(\"h5/D\").f = gOPNExt.f = $getOwnPropertyNames;\n  __webpack_require__(\"Nwxm\").f = $propertyIsEnumerable;\n  __webpack_require__(\"dpY+\").f = $getOwnPropertySymbols;\n\n  if (DESCRIPTORS && !__webpack_require__(\"Z+w7\")) {\n    redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true);\n  }\n\n  wksExt.f = function (name) {\n    return wrap(wks(name));\n  };\n}\n\n$export($export.G + $export.W + $export.F * !USE_NATIVE, { Symbol: $Symbol });\n\nfor (var es6Symbols =\n// 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14\n'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables'.split(','), j = 0; es6Symbols.length > j;) {\n  wks(es6Symbols[j++]);\n}for (var wellKnownSymbols = $keys(wks.store), k = 0; wellKnownSymbols.length > k;) {\n  wksDefine(wellKnownSymbols[k++]);\n}$export($export.S + $export.F * !USE_NATIVE, 'Symbol', {\n  // 19.4.2.1 Symbol.for(key)\n  'for': function _for(key) {\n    return has(SymbolRegistry, key += '') ? SymbolRegistry[key] : SymbolRegistry[key] = $Symbol(key);\n  },\n  // 19.4.2.5 Symbol.keyFor(sym)\n  keyFor: function keyFor(sym) {\n    if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!');\n    for (var key in SymbolRegistry) {\n      if (SymbolRegistry[key] === sym) return key;\n    }\n  },\n  useSetter: function useSetter() {\n    setter = true;\n  },\n  useSimple: function useSimple() {\n    setter = false;\n  }\n});\n\n$export($export.S + $export.F * !USE_NATIVE, 'Object', {\n  // 19.1.2.2 Object.create(O [, Properties])\n  create: $create,\n  // 19.1.2.4 Object.defineProperty(O, P, Attributes)\n  defineProperty: $defineProperty,\n  // 19.1.2.3 Object.defineProperties(O, Properties)\n  defineProperties: $defineProperties,\n  // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)\n  getOwnPropertyDescriptor: $getOwnPropertyDescriptor,\n  // 19.1.2.7 Object.getOwnPropertyNames(O)\n  getOwnPropertyNames: $getOwnPropertyNames,\n  // 19.1.2.8 Object.getOwnPropertySymbols(O)\n  getOwnPropertySymbols: $getOwnPropertySymbols\n});\n\n// 24.3.2 JSON.stringify(value [, replacer [, space]])\n$JSON && $export($export.S + $export.F * (!USE_NATIVE || $fails(function () {\n  var S = $Symbol();\n  // MS Edge converts symbol values to JSON as {}\n  // WebKit converts symbol values to JSON as null\n  // V8 throws on boxed symbols\n  return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}';\n})), 'JSON', {\n  stringify: function stringify(it) {\n    var args = [it];\n    var i = 1;\n    var replacer, $replacer;\n    while (arguments.length > i) {\n      args.push(arguments[i++]);\n    }$replacer = replacer = args[1];\n    if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined\n    if (!isArray(replacer)) replacer = function replacer(key, value) {\n      if (typeof $replacer == 'function') value = $replacer.call(this, key, value);\n      if (!isSymbol(value)) return value;\n    };\n    args[1] = replacer;\n    return _stringify.apply($JSON, args);\n  }\n});\n\n// 19.4.3.4 Symbol.prototype[@@toPrimitive](hint)\n$Symbol[PROTOTYPE][TO_PRIMITIVE] || __webpack_require__(\"viVs\")($Symbol[PROTOTYPE], TO_PRIMITIVE, $Symbol[PROTOTYPE].valueOf);\n// 19.4.3.5 Symbol.prototype[@@toStringTag]\nsetToStringTag($Symbol, 'Symbol');\n// 20.2.1.9 Math[@@toStringTag]\nsetToStringTag(Math, 'Math', true);\n// 24.3.3 JSON[@@toStringTag]\nsetToStringTag(global.JSON, 'JSON', true);\n\n/***/ }),\n\n/***/ \"xvHV\":\n/***/ (function(module, exports) {\n\nmodule.exports = function (exec) {\n  try {\n    return !!exec();\n  } catch (e) {\n    return true;\n  }\n};\n\n/***/ }),\n\n/***/ \"y/4D\":\n/***/ (function(module, exports, __webpack_require__) {\n\n// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window\nvar toIObject = __webpack_require__(\"SFi4\");\nvar gOPN = __webpack_require__(\"h5/D\").f;\nvar toString = {}.toString;\n\nvar windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames ? Object.getOwnPropertyNames(window) : [];\n\nvar getWindowNames = function getWindowNames(it) {\n  try {\n    return gOPN(it);\n  } catch (e) {\n    return windowNames.slice();\n  }\n};\n\nmodule.exports.f = function getOwnPropertyNames(it) {\n  return windowNames && toString.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it));\n};\n\n/***/ }),\n\n/***/ \"yGA3\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar shared = __webpack_require__(\"M/ML\")('keys');\nvar uid = __webpack_require__(\"nzN6\");\nmodule.exports = function (key) {\n  return shared[key] || (shared[key] = uid(key));\n};\n\n/***/ }),\n\n/***/ \"ySUw\":\n/***/ (function(module, exports, __webpack_require__) {\n\nvar tabbable = __webpack_require__(\"TO+D\");\n\nvar listeningFocusTrap = null;\n\nfunction focusTrap(element, userOptions) {\n  var tabbableNodes = [];\n  var firstTabbableNode = null;\n  var lastTabbableNode = null;\n  var nodeFocusedBeforeActivation = null;\n  var active = false;\n  var paused = false;\n  var tabEvent = null;\n\n  var container = typeof element === 'string' ? document.querySelector(element) : element;\n\n  var config = userOptions || {};\n  config.returnFocusOnDeactivate = userOptions && userOptions.returnFocusOnDeactivate !== undefined ? userOptions.returnFocusOnDeactivate : true;\n  config.escapeDeactivates = userOptions && userOptions.escapeDeactivates !== undefined ? userOptions.escapeDeactivates : true;\n\n  var trap = {\n    activate: activate,\n    deactivate: deactivate,\n    pause: pause,\n    unpause: unpause\n  };\n\n  return trap;\n\n  function activate(activateOptions) {\n    if (active) return;\n\n    var defaultedActivateOptions = {\n      onActivate: activateOptions && activateOptions.onActivate !== undefined ? activateOptions.onActivate : config.onActivate\n    };\n\n    active = true;\n    paused = false;\n    nodeFocusedBeforeActivation = document.activeElement;\n\n    if (defaultedActivateOptions.onActivate) {\n      defaultedActivateOptions.onActivate();\n    }\n\n    addListeners();\n    return trap;\n  }\n\n  function deactivate(deactivateOptions) {\n    if (!active) return;\n\n    var defaultedDeactivateOptions = {\n      returnFocus: deactivateOptions && deactivateOptions.returnFocus !== undefined ? deactivateOptions.returnFocus : config.returnFocusOnDeactivate,\n      onDeactivate: deactivateOptions && deactivateOptions.onDeactivate !== undefined ? deactivateOptions.onDeactivate : config.onDeactivate\n    };\n\n    removeListeners();\n\n    if (defaultedDeactivateOptions.onDeactivate) {\n      defaultedDeactivateOptions.onDeactivate();\n    }\n\n    if (defaultedDeactivateOptions.returnFocus) {\n      setTimeout(function () {\n        tryFocus(nodeFocusedBeforeActivation);\n      }, 0);\n    }\n\n    active = false;\n    paused = false;\n    return this;\n  }\n\n  function pause() {\n    if (paused || !active) return;\n    paused = true;\n    removeListeners();\n  }\n\n  function unpause() {\n    if (!paused || !active) return;\n    paused = false;\n    addListeners();\n  }\n\n  function addListeners() {\n    if (!active) return;\n\n    // There can be only one listening focus trap at a time\n    if (listeningFocusTrap) {\n      listeningFocusTrap.pause();\n    }\n    listeningFocusTrap = trap;\n\n    updateTabbableNodes();\n    // Ensure that the focused element doesn't capture the event that caused the focus trap activation\n    setTimeout(function () {\n      tryFocus(firstFocusNode());\n    }, 0);\n    document.addEventListener('focus', checkFocus, true);\n    document.addEventListener('click', checkClick, true);\n    document.addEventListener('mousedown', checkPointerDown, true);\n    document.addEventListener('touchstart', checkPointerDown, true);\n    document.addEventListener('keydown', checkKey, true);\n\n    return trap;\n  }\n\n  function removeListeners() {\n    if (!active || listeningFocusTrap !== trap) return;\n\n    document.removeEventListener('focus', checkFocus, true);\n    document.removeEventListener('click', checkClick, true);\n    document.removeEventListener('mousedown', checkPointerDown, true);\n    document.removeEventListener('touchstart', checkPointerDown, true);\n    document.removeEventListener('keydown', checkKey, true);\n\n    listeningFocusTrap = null;\n\n    return trap;\n  }\n\n  function getNodeForOption(optionName) {\n    var optionValue = config[optionName];\n    var node = optionValue;\n    if (!optionValue) {\n      return null;\n    }\n    if (typeof optionValue === 'string') {\n      node = document.querySelector(optionValue);\n      if (!node) {\n        throw new Error('`' + optionName + '` refers to no known node');\n      }\n    }\n    if (typeof optionValue === 'function') {\n      node = optionValue();\n      if (!node) {\n        throw new Error('`' + optionName + '` did not return a node');\n      }\n    }\n    return node;\n  }\n\n  function firstFocusNode() {\n    var node;\n    if (getNodeForOption('initialFocus') !== null) {\n      node = getNodeForOption('initialFocus');\n    } else if (container.contains(document.activeElement)) {\n      node = document.activeElement;\n    } else {\n      node = tabbableNodes[0] || getNodeForOption('fallbackFocus');\n    }\n\n    if (!node) {\n      throw new Error('You can\\'t have a focus-trap without at least one focusable element');\n    }\n\n    return node;\n  }\n\n  // This needs to be done on mousedown and touchstart instead of click\n  // so that it precedes the focus event\n  function checkPointerDown(e) {\n    if (config.clickOutsideDeactivates && !container.contains(e.target)) {\n      deactivate({ returnFocus: false });\n    }\n  }\n\n  function checkClick(e) {\n    if (config.clickOutsideDeactivates) return;\n    if (container.contains(e.target)) return;\n    e.preventDefault();\n    e.stopImmediatePropagation();\n  }\n\n  function checkFocus(e) {\n    if (container.contains(e.target)) return;\n    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'' : undefined;\n    a = s.charCodeAt(i);\n    return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff\n      ? TO_STRING ? s.charAt(i) : a\n      : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000;\n  };\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_string-at.js","'use strict';\n\nvar _preact = require('preact');\n\nif (process.env.NODE_ENV === 'development') {\n\trequire('preact/devtools');\n} else if (process.env.ADD_SW && 'serviceWorker' in navigator && location.protocol === 'https:') {\n\tnavigator.serviceWorker.register(__webpack_public_path__ + 'sw.js');\n}\n\nconst interopDefault = m => m && m.default ? m.default : m;\n\nlet app = interopDefault(require('preact-cli-entrypoint'));\n\nif (typeof app === 'function') {\n\tlet root = document.body.firstElementChild;\n\n\tlet init = () => {\n\t\tlet app = interopDefault(require('preact-cli-entrypoint'));\n\t\troot = (0, _preact.render)((0, _preact.h)(app), document.body, root);\n\t};\n\n\tif (module.hot) module.hot.accept('preact-cli-entrypoint', init);\n\n\tinit();\n}\n\n\n// WEBPACK FOOTER //\n// /Users/seanrhea/.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/lib/lib/entry.js","// 19.1.2.14 / 15.2.3.14 Object.keys(O)\nvar $keys = require('./_object-keys-internal');\nvar enumBugKeys = require('./_enum-bug-keys');\n\nmodule.exports = Object.keys || function keys(O) {\n  return $keys(O, enumBugKeys);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-keys.js","'use strict';\nvar strictUriEncode = require('strict-uri-encode');\nvar objectAssign = require('object-assign');\n\nfunction encoderForArrayFormat(opts) {\n\tswitch (opts.arrayFormat) {\n\t\tcase 'index':\n\t\t\treturn function (key, value, index) {\n\t\t\t\treturn value === null ? [\n\t\t\t\t\tencode(key, opts),\n\t\t\t\t\t'[',\n\t\t\t\t\tindex,\n\t\t\t\t\t']'\n\t\t\t\t].join('') : [\n\t\t\t\t\tencode(key, opts),\n\t\t\t\t\t'[',\n\t\t\t\t\tencode(index, opts),\n\t\t\t\t\t']=',\n\t\t\t\t\tencode(value, opts)\n\t\t\t\t].join('');\n\t\t\t};\n\n\t\tcase 'bracket':\n\t\t\treturn function (key, value) {\n\t\t\t\treturn value === null ? encode(key, opts) : [\n\t\t\t\t\tencode(key, opts),\n\t\t\t\t\t'[]=',\n\t\t\t\t\tencode(value, opts)\n\t\t\t\t].join('');\n\t\t\t};\n\n\t\tdefault:\n\t\t\treturn function (key, value) {\n\t\t\t\treturn value === null ? encode(key, opts) : [\n\t\t\t\t\tencode(key, opts),\n\t\t\t\t\t'=',\n\t\t\t\t\tencode(value, opts)\n\t\t\t\t].join('');\n\t\t\t};\n\t}\n}\n\nfunction parserForArrayFormat(opts) {\n\tvar result;\n\n\tswitch (opts.arrayFormat) {\n\t\tcase 'index':\n\t\t\treturn function (key, value, accumulator) {\n\t\t\t\tresult = /\\[(\\d*)\\]$/.exec(key);\n\n\t\t\t\tkey = key.replace(/\\[\\d*\\]$/, '');\n\n\t\t\t\tif (!result) {\n\t\t\t\t\taccumulator[key] = value;\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tif (accumulator[key] === undefined) {\n\t\t\t\t\taccumulator[key] = {};\n\t\t\t\t}\n\n\t\t\t\taccumulator[key][result[1]] = value;\n\t\t\t};\n\n\t\tcase 'bracket':\n\t\t\treturn function (key, value, accumulator) {\n\t\t\t\tresult = /(\\[\\])$/.exec(key);\n\t\t\t\tkey = key.replace(/\\[\\]$/, '');\n\n\t\t\t\tif (!result) {\n\t\t\t\t\taccumulator[key] = value;\n\t\t\t\t\treturn;\n\t\t\t\t} else if (accumulator[key] === undefined) {\n\t\t\t\t\taccumulator[key] = [value];\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\taccumulator[key] = [].concat(accumulator[key], value);\n\t\t\t};\n\n\t\tdefault:\n\t\t\treturn function (key, value, accumulator) {\n\t\t\t\tif (accumulator[key] === undefined) {\n\t\t\t\t\taccumulator[key] = value;\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\taccumulator[key] = [].concat(accumulator[key], value);\n\t\t\t};\n\t}\n}\n\nfunction encode(value, opts) {\n\tif (opts.encode) {\n\t\treturn opts.strict ? strictUriEncode(value) : encodeURIComponent(value);\n\t}\n\n\treturn value;\n}\n\nfunction keysSorter(input) {\n\tif (Array.isArray(input)) {\n\t\treturn input.sort();\n\t} else if (typeof input === 'object') {\n\t\treturn keysSorter(Object.keys(input)).sort(function (a, b) {\n\t\t\treturn Number(a) - Number(b);\n\t\t}).map(function (key) {\n\t\t\treturn input[key];\n\t\t});\n\t}\n\n\treturn input;\n}\n\nexports.extract = function (str) {\n\treturn str.split('?')[1] || '';\n};\n\nexports.parse = function (str, opts) {\n\topts = objectAssign({arrayFormat: 'none'}, opts);\n\n\tvar formatter = parserForArrayFormat(opts);\n\n\t// Create an object with no prototype\n\t// https://github.com/sindresorhus/query-string/issues/47\n\tvar ret = Object.create(null);\n\n\tif (typeof str !== 'string') {\n\t\treturn ret;\n\t}\n\n\tstr = str.trim().replace(/^(\\?|#|&)/, '');\n\n\tif (!str) {\n\t\treturn ret;\n\t}\n\n\tstr.split('&').forEach(function (param) {\n\t\tvar parts = param.replace(/\\+/g, ' ').split('=');\n\t\t// Firefox (pre 40) decodes `%3D` to `=`\n\t\t// https://github.com/sindresorhus/query-string/pull/37\n\t\tvar key = parts.shift();\n\t\tvar val = parts.length > 0 ? parts.join('=') : undefined;\n\n\t\t// missing `=` should be `null`:\n\t\t// http://w3.org/TR/2012/WD-url-20120524/#collect-url-parameters\n\t\tval = val === undefined ? null : decodeURIComponent(val);\n\n\t\tformatter(decodeURIComponent(key), val, ret);\n\t});\n\n\treturn Object.keys(ret).sort().reduce(function (result, key) {\n\t\tvar val = ret[key];\n\t\tif (Boolean(val) && typeof val === 'object' && !Array.isArray(val)) {\n\t\t\t// Sort object keys, not values\n\t\t\tresult[key] = keysSorter(val);\n\t\t} else {\n\t\t\tresult[key] = val;\n\t\t}\n\n\t\treturn result;\n\t}, Object.create(null));\n};\n\nexports.stringify = function (obj, opts) {\n\tvar defaults = {\n\t\tencode: true,\n\t\tstrict: true,\n\t\tarrayFormat: 'none'\n\t};\n\n\topts = objectAssign(defaults, opts);\n\n\tvar formatter = encoderForArrayFormat(opts);\n\n\treturn obj ? Object.keys(obj).sort().map(function (key) {\n\t\tvar val = obj[key];\n\n\t\tif (val === undefined) {\n\t\t\treturn '';\n\t\t}\n\n\t\tif (val === null) {\n\t\t\treturn encode(key, opts);\n\t\t}\n\n\t\tif (Array.isArray(val)) {\n\t\t\tvar result = [];\n\n\t\t\tval.slice().forEach(function (val2) {\n\t\t\t\tif (val2 === undefined) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tresult.push(formatter(key, val2, result.length));\n\t\t\t});\n\n\t\t\treturn result.join('&');\n\t\t}\n\n\t\treturn encode(key, opts) + '=' + encode(val, opts);\n\t}).filter(function (x) {\n\t\treturn x.length > 0;\n\t}).join('&') : '';\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/query-string/index.js","import { Component, cloneElement, h } from 'preact';\n\nvar EMPTY$1 = {};\n\nfunction assign(obj, props) {\n\t// eslint-disable-next-line guard-for-in\n\tfor (var i in props) {\n\t\tobj[i] = props[i];\n\t}\n\treturn obj;\n}\n\nfunction exec(url, route, opts) {\n\tvar reg = /(?:\\?([^#]*))?(#.*)?$/,\n\t\tc = url.match(reg),\n\t\tmatches = {},\n\t\tret;\n\tif (c && c[1]) {\n\t\tvar p = c[1].split('&');\n\t\tfor (var i=0; i<p.length; i++) {\n\t\t\tvar r = p[i].split('=');\n\t\t\tmatches[decodeURIComponent(r[0])] = decodeURIComponent(r.slice(1).join('='));\n\t\t}\n\t}\n\turl = segmentize(url.replace(reg, ''));\n\troute = segmentize(route || '');\n\tvar max = Math.max(url.length, route.length);\n\tfor (var i$1=0; i$1<max; i$1++) {\n\t\tif (route[i$1] && route[i$1].charAt(0)===':') {\n\t\t\tvar param = route[i$1].replace(/(^\\:|[+*?]+$)/g, ''),\n\t\t\t\tflags = (route[i$1].match(/[+*?]+$/) || EMPTY$1)[0] || '',\n\t\t\t\tplus = ~flags.indexOf('+'),\n\t\t\t\tstar = ~flags.indexOf('*'),\n\t\t\t\tval = url[i$1] || '';\n\t\t\tif (!val && !star && (flags.indexOf('?')<0 || plus)) {\n\t\t\t\tret = false;\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tmatches[param] = decodeURIComponent(val);\n\t\t\tif (plus || star) {\n\t\t\t\tmatches[param] = url.slice(i$1).map(decodeURIComponent).join('/');\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t\telse if (route[i$1]!==url[i$1]) {\n\t\t\tret = false;\n\t\t\tbreak;\n\t\t}\n\t}\n\tif (opts.default!==true && ret===false) { return false; }\n\treturn matches;\n}\n\nfunction pathRankSort(a, b) {\n\treturn (\n\t\t(a.rank < b.rank) ? 1 :\n\t\t(a.rank > b.rank) ? -1 :\n\t\t(a.index - b.index)\n\t);\n}\n\n// filter out VNodes without attributes (which are unrankeable), and add `index`/`rank` properties to be used in sorting.\nfunction prepareVNodeForRanking(vnode, index) {\n\tvnode.index = index;\n\tvnode.rank = rankChild(vnode);\n\treturn vnode.attributes;\n}\n\nfunction segmentize(url) {\n\treturn url.replace(/(^\\/+|\\/+$)/g, '').split('/');\n}\n\nfunction rankSegment(segment) {\n\treturn segment.charAt(0)==':' ? (1 + '*+?'.indexOf(segment.charAt(segment.length-1))) || 4 : 5;\n}\n\nfunction rank(path) {\n\treturn segmentize(path).map(rankSegment).join('');\n}\n\nfunction rankChild(vnode) {\n\treturn vnode.attributes.default ? 0 : rank(vnode.attributes.path);\n}\n\nvar customHistory = null;\n\nvar ROUTERS = [];\n\nvar subscribers = [];\n\nvar EMPTY = {};\n\nfunction isPreactElement(node) {\n\treturn node.__preactattr_!=null || typeof Symbol!=='undefined' && node[Symbol.for('preactattr')]!=null;\n}\n\nfunction setUrl(url, type) {\n\tif ( type === void 0 ) type='push';\n\n\tif (customHistory && customHistory[type]) {\n\t\tcustomHistory[type](url);\n\t}\n\telse if (typeof history!=='undefined' && history[type+'State']) {\n\t\thistory[type+'State'](null, null, url);\n\t}\n}\n\n\nfunction getCurrentUrl() {\n\tvar url;\n\tif (customHistory && customHistory.location) {\n\t\turl = customHistory.location;\n\t}\n\telse if (customHistory && customHistory.getCurrentLocation) {\n\t\turl = customHistory.getCurrentLocation();\n\t}\n\telse {\n\t\turl = typeof location!=='undefined' ? location : EMPTY;\n\t}\n\treturn (\"\" + (url.pathname || '') + (url.search || ''));\n}\n\n\n\nfunction route(url, replace) {\n\tif ( replace === void 0 ) replace=false;\n\n\tif (typeof url!=='string' && url.url) {\n\t\treplace = url.replace;\n\t\turl = url.url;\n\t}\n\n\t// only push URL into history if we can handle it\n\tif (canRoute(url)) {\n\t\tsetUrl(url, replace ? 'replace' : 'push');\n\t}\n\n\treturn routeTo(url);\n}\n\n\n/** Check if the given URL can be handled by any router instances. */\nfunction canRoute(url) {\n\tfor (var i=ROUTERS.length; i--; ) {\n\t\tif (ROUTERS[i].canRoute(url)) { return true; }\n\t}\n\treturn false;\n}\n\n\n/** Tell all router instances to handle the given URL.  */\nfunction routeTo(url) {\n\tvar didRoute = false;\n\tfor (var i=0; i<ROUTERS.length; i++) {\n\t\tif (ROUTERS[i].routeTo(url)===true) {\n\t\t\tdidRoute = true;\n\t\t}\n\t}\n\tfor (var i$1=subscribers.length; i$1--; ) {\n\t\tsubscribers[i$1](url);\n\t}\n\treturn didRoute;\n}\n\n\nfunction routeFromLink(node) {\n\t// only valid elements\n\tif (!node || !node.getAttribute) { return; }\n\n\tvar href = node.getAttribute('href'),\n\t\ttarget = node.getAttribute('target');\n\n\t// ignore links with targets and non-path URLs\n\tif (!href || !href.match(/^\\//g) || (target && !target.match(/^_?self$/i))) { return; }\n\n\t// attempt to route, if no match simply cede control to browser\n\treturn route(href);\n}\n\n\nfunction handleLinkClick(e) {\n\tif (e.button==0) {\n\t\trouteFromLink(e.currentTarget || e.target || this);\n\t\treturn prevent(e);\n\t}\n}\n\n\nfunction prevent(e) {\n\tif (e) {\n\t\tif (e.stopImmediatePropagation) { e.stopImmediatePropagation(); }\n\t\tif (e.stopPropagation) { e.stopPropagation(); }\n\t\te.preventDefault();\n\t}\n\treturn false;\n}\n\n\nfunction delegateLinkHandler(e) {\n\t// ignore events the browser takes care of already:\n\tif (e.ctrlKey || e.metaKey || e.altKey || e.shiftKey || e.button!==0) { return; }\n\n\tvar t = e.target;\n\tdo {\n\t\tif (String(t.nodeName).toUpperCase()==='A' && t.getAttribute('href') && isPreactElement(t)) {\n\t\t\tif (t.hasAttribute('native')) { return; }\n\t\t\t// if link is handled by the router, prevent browser defaults\n\t\t\tif (routeFromLink(t)) {\n\t\t\t\treturn prevent(e);\n\t\t\t}\n\t\t}\n\t} while ((t=t.parentNode));\n}\n\n\nvar eventListenersInitialized = false;\n\nfunction initEventListeners() {\n\tif (eventListenersInitialized) { return; }\n\n\tif (typeof addEventListener==='function') {\n\t\tif (!customHistory) {\n\t\t\taddEventListener('popstate', function () {\n\t\t\t\trouteTo(getCurrentUrl());\n\t\t\t});\n\t\t}\n\t\taddEventListener('click', delegateLinkHandler);\n\t}\n\teventListenersInitialized = true;\n}\n\n\nvar Router = (function (Component$$1) {\n\tfunction Router(props) {\n\t\tComponent$$1.call(this, props);\n\t\tif (props.history) {\n\t\t\tcustomHistory = props.history;\n\t\t}\n\n\t\tthis.state = {\n\t\t\turl: props.url || getCurrentUrl()\n\t\t};\n\n\t\tinitEventListeners();\n\t}\n\n\tif ( Component$$1 ) Router.__proto__ = Component$$1;\n\tRouter.prototype = Object.create( Component$$1 && Component$$1.prototype );\n\tRouter.prototype.constructor = Router;\n\n\tRouter.prototype.shouldComponentUpdate = function shouldComponentUpdate (props) {\n\t\tif (props.static!==true) { return true; }\n\t\treturn props.url!==this.props.url || props.onChange!==this.props.onChange;\n\t};\n\n\t/** Check if the given URL can be matched against any children */\n\tRouter.prototype.canRoute = function canRoute (url) {\n\t\treturn this.getMatchingChildren(this.props.children, url, false).length > 0;\n\t};\n\n\t/** Re-render children with a new URL to match against. */\n\tRouter.prototype.routeTo = function routeTo (url) {\n\t\tthis._didRoute = false;\n\t\tthis.setState({ url: url });\n\n\t\t// if we're in the middle of an update, don't synchronously re-route.\n\t\tif (this.updating) { return this.canRoute(url); }\n\n\t\tthis.forceUpdate();\n\t\treturn this._didRoute;\n\t};\n\n\tRouter.prototype.componentWillMount = function componentWillMount () {\n\t\tROUTERS.push(this);\n\t\tthis.updating = true;\n\t};\n\n\tRouter.prototype.componentDidMount = function componentDidMount () {\n\t\tvar this$1 = this;\n\n\t\tif (customHistory) {\n\t\t\tthis.unlisten = customHistory.listen(function (location) {\n\t\t\t\tthis$1.routeTo((\"\" + (location.pathname || '') + (location.search || '')));\n\t\t\t});\n\t\t}\n\t\tthis.updating = false;\n\t};\n\n\tRouter.prototype.componentWillUnmount = function componentWillUnmount () {\n\t\tif (typeof this.unlisten==='function') { this.unlisten(); }\n\t\tROUTERS.splice(ROUTERS.indexOf(this), 1);\n\t};\n\n\tRouter.prototype.componentWillUpdate = function componentWillUpdate () {\n\t\tthis.updating = true;\n\t};\n\n\tRouter.prototype.componentDidUpdate = function componentDidUpdate () {\n\t\tthis.updating = false;\n\t};\n\n\tRouter.prototype.getMatchingChildren = function getMatchingChildren (children, url, invoke) {\n\t\treturn children\n\t\t\t.filter(prepareVNodeForRanking)\n\t\t\t.sort(pathRankSort)\n\t\t\t.map( function (vnode) {\n\t\t\t\tvar matches = exec(url, vnode.attributes.path, vnode.attributes);\n\t\t\t\tif (matches) {\n\t\t\t\t\tif (invoke !== false) {\n\t\t\t\t\t\tvar newProps = { url: url, matches: matches };\n\t\t\t\t\t\tassign(newProps, matches);\n\t\t\t\t\t\tdelete newProps.ref;\n\t\t\t\t\t\tdelete newProps.key;\n\t\t\t\t\t\treturn cloneElement(vnode, newProps);\n\t\t\t\t\t}\n\t\t\t\t\treturn vnode;\n\t\t\t\t}\n\t\t\t}).filter(Boolean);\n\t};\n\n\tRouter.prototype.render = function render (ref, ref$1) {\n\t\tvar children = ref.children;\n\t\tvar onChange = ref.onChange;\n\t\tvar url = ref$1.url;\n\n\t\tvar active = this.getMatchingChildren(children, url, true);\n\n\t\tvar current = active[0] || null;\n\t\tthis._didRoute = !!current;\n\n\t\tvar previous = this.previousUrl;\n\t\tif (url!==previous) {\n\t\t\tthis.previousUrl = url;\n\t\t\tif (typeof onChange==='function') {\n\t\t\t\tonChange({\n\t\t\t\t\trouter: this,\n\t\t\t\t\turl: url,\n\t\t\t\t\tprevious: previous,\n\t\t\t\t\tactive: active,\n\t\t\t\t\tcurrent: current\n\t\t\t\t});\n\t\t\t}\n\t\t}\n\n\t\treturn current;\n\t};\n\n\treturn Router;\n}(Component));\n\nvar Link = function (props) { return (\n\th('a', assign({ onClick: handleLinkClick }, props))\n); };\n\nvar Route = function (props) { return h(props.component, props); };\n\nRouter.subscribers = subscribers;\nRouter.getCurrentUrl = getCurrentUrl;\nRouter.route = route;\nRouter.Router = Router;\nRouter.Route = Route;\nRouter.Link = Link;\n\nexport { subscribers, getCurrentUrl, route, Router, Route, Link };export default Router;\n//# sourceMappingURL=preact-router.es.js.map\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-router/dist/preact-router.es.js","var getPrototypeOf = require(\"./getPrototypeOf\");\n\nfunction _superPropBase(object, property) {\n  while (!Object.prototype.hasOwnProperty.call(object, property)) {\n    object = getPrototypeOf(object);\n    if (object === null) break;\n  }\n\n  return object;\n}\n\nmodule.exports = _superPropBase;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/superPropBase.js","/**\n * Copyright 2014-2015, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n */\n\n'use strict';\n\n/**\n * Similar to invariant but only logs a warning if the condition is not met.\n * This can be used to log issues in development environments in critical\n * paths. Removing the logging code for production environments will keep the\n * same logic and follow the same code paths.\n */\n\nvar warning = function() {};\n\nif (process.env.NODE_ENV !== 'production') {\n  warning = function(condition, format, args) {\n    var len = arguments.length;\n    args = new Array(len > 2 ? len - 2 : 0);\n    for (var key = 2; key < len; key++) {\n      args[key - 2] = arguments[key];\n    }\n    if (format === undefined) {\n      throw new Error(\n        '`warning(condition, format, ...args)` requires a warning ' +\n        'message argument'\n      );\n    }\n\n    if (format.length < 10 || (/^[s\\W]*$/).test(format)) {\n      throw new Error(\n        'The warning format should be able to uniquely identify this ' +\n        'warning. Please, use a more descriptive format than: ' + format\n      );\n    }\n\n    if (!condition) {\n      var argIndex = 0;\n      var message = 'Warning: ' +\n        format.replace(/%s/g, function() {\n          return args[argIndex++];\n        });\n      if (typeof console !== 'undefined') {\n        console.error(message);\n      }\n      try {\n        // This error was thrown as a convenience so that you can use this stack\n        // to find the callsite that caused this warning to fire.\n        throw new Error(message);\n      } catch(x) {}\n    }\n  };\n}\n\nmodule.exports = warning;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/warning/browser.js","var _typeof = require(\"../helpers/typeof\");\n\nvar assertThisInitialized = require(\"./assertThisInitialized\");\n\nfunction _possibleConstructorReturn(self, call) {\n  if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) {\n    return call;\n  }\n\n  return assertThisInitialized(self);\n}\n\nmodule.exports = _possibleConstructorReturn;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/possibleConstructorReturn.js","function _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}\n\nmodule.exports = _classCallCheck;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/classCallCheck.js","var dP = require('./_object-dp');\nvar anObject = require('./_an-object');\nvar getKeys = require('./_object-keys');\n\nmodule.exports = require('./_descriptors') ? Object.defineProperties : function defineProperties(O, Properties) {\n  anObject(O);\n  var keys = getKeys(Properties);\n  var length = keys.length;\n  var i = 0;\n  var P;\n  while (length > i) dP.f(O, P = keys[i++], Properties[P]);\n  return O;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-dps.js","'use strict';\nvar $at = require('./_string-at')(true);\n\n// 21.1.3.27 String.prototype[@@iterator]()\nrequire('./_iter-define')(String, 'String', function (iterated) {\n  this._t = String(iterated); // target\n  this._i = 0;                // next index\n// 21.1.5.2.1 %StringIteratorPrototype%.next()\n}, function () {\n  var O = this._t;\n  var index = this._i;\n  var point;\n  if (index >= O.length) return { value: undefined, done: true };\n  point = $at(O, index);\n  this._i += point.length;\n  return { value: point, done: false };\n});\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.string.iterator.js","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\n/**\n * Use invariant() to assert state which your program assumes to be true.\n *\n * Provide sprintf-style format (only %s is supported) and arguments\n * to provide information about what broke and what you were\n * expecting.\n *\n * The invariant message will be stripped in production, but the invariant\n * will remain to ensure logic does not differ in production.\n */\n\nvar invariant = function(condition, format, a, b, c, d, e, f) {\n  if (process.env.NODE_ENV !== 'production') {\n    if (format === undefined) {\n      throw new Error('invariant requires an error message argument');\n    }\n  }\n\n  if (!condition) {\n    var error;\n    if (format === undefined) {\n      error = new Error(\n        'Minified exception occurred; use the non-minified dev environment ' +\n        'for the full error message and additional helpful warnings.'\n      );\n    } else {\n      var args = [a, b, c, d, e, f];\n      var argIndex = 0;\n      error = new Error(\n        format.replace(/%s/g, function() { return args[argIndex++]; })\n      );\n      error.name = 'Invariant Violation';\n    }\n\n    error.framesToPop = 1; // we don't care about invariant's own frame\n    throw error;\n  }\n};\n\nmodule.exports = invariant;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/invariant/browser.js","'use strict';\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nfunction _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\nvar firebase = _interopDefault(require('@firebase/app'));\nvar tslib_1 = require('tslib');\nvar util = require('@firebase/util');\nvar logger$1 = require('@firebase/logger');\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Wraps a DOM Storage object and:\r\n * - automatically encode objects as JSON strings before storing them to allow us to store arbitrary types.\r\n * - prefixes names with \"firebase:\" to avoid collisions with app data.\r\n *\r\n * We automatically (see storage.js) create two such wrappers, one for sessionStorage,\r\n * and one for localStorage.\r\n *\r\n * @constructor\r\n */\r\nvar DOMStorageWrapper = /** @class */ (function () {\r\n    /**\r\n     * @param {Storage} domStorage_ The underlying storage object (e.g. localStorage or sessionStorage)\r\n     */\r\n    function DOMStorageWrapper(domStorage_) {\r\n        this.domStorage_ = domStorage_;\r\n        // Use a prefix to avoid collisions with other stuff saved by the app.\r\n        this.prefix_ = 'firebase:';\r\n    }\r\n    /**\r\n     * @param {string} key The key to save the value under\r\n     * @param {?Object} value The value being stored, or null to remove the key.\r\n     */\r\n    DOMStorageWrapper.prototype.set = function (key, value) {\r\n        if (value == null) {\r\n            this.domStorage_.removeItem(this.prefixedName_(key));\r\n        }\r\n        else {\r\n            this.domStorage_.setItem(this.prefixedName_(key), util.stringify(value));\r\n        }\r\n    };\r\n    /**\r\n     * @param {string} key\r\n     * @return {*} The value that was stored under this key, or null\r\n     */\r\n    DOMStorageWrapper.prototype.get = function (key) {\r\n        var storedVal = this.domStorage_.getItem(this.prefixedName_(key));\r\n        if (storedVal == null) {\r\n            return null;\r\n        }\r\n        else {\r\n            return util.jsonEval(storedVal);\r\n        }\r\n    };\r\n    /**\r\n     * @param {string} key\r\n     */\r\n    DOMStorageWrapper.prototype.remove = function (key) {\r\n        this.domStorage_.removeItem(this.prefixedName_(key));\r\n    };\r\n    /**\r\n     * @param {string} name\r\n     * @return {string}\r\n     */\r\n    DOMStorageWrapper.prototype.prefixedName_ = function (name) {\r\n        return this.prefix_ + name;\r\n    };\r\n    DOMStorageWrapper.prototype.toString = function () {\r\n        return this.domStorage_.toString();\r\n    };\r\n    return DOMStorageWrapper;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An in-memory storage implementation that matches the API of DOMStorageWrapper\r\n * (TODO: create interface for both to implement).\r\n *\r\n * @constructor\r\n */\r\nvar MemoryStorage = /** @class */ (function () {\r\n    function MemoryStorage() {\r\n        this.cache_ = {};\r\n        this.isInMemoryStorage = true;\r\n    }\r\n    MemoryStorage.prototype.set = function (key, value) {\r\n        if (value == null) {\r\n            delete this.cache_[key];\r\n        }\r\n        else {\r\n            this.cache_[key] = value;\r\n        }\r\n    };\r\n    MemoryStorage.prototype.get = function (key) {\r\n        if (util.contains(this.cache_, key)) {\r\n            return this.cache_[key];\r\n        }\r\n        return null;\r\n    };\r\n    MemoryStorage.prototype.remove = function (key) {\r\n        delete this.cache_[key];\r\n    };\r\n    return MemoryStorage;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Helper to create a DOMStorageWrapper or else fall back to MemoryStorage.\r\n * TODO: Once MemoryStorage and DOMStorageWrapper have a shared interface this method annotation should change\r\n * to reflect this type\r\n *\r\n * @param {string} domStorageName Name of the underlying storage object\r\n *   (e.g. 'localStorage' or 'sessionStorage').\r\n * @return {?} Turning off type information until a common interface is defined.\r\n */\r\nvar createStoragefor = function (domStorageName) {\r\n    try {\r\n        // NOTE: just accessing \"localStorage\" or \"window['localStorage']\" may throw a security exception,\r\n        // so it must be inside the try/catch.\r\n        if (typeof window !== 'undefined' &&\r\n            typeof window[domStorageName] !== 'undefined') {\r\n            // Need to test cache. Just because it's here doesn't mean it works\r\n            var domStorage = window[domStorageName];\r\n            domStorage.setItem('firebase:sentinel', 'cache');\r\n            domStorage.removeItem('firebase:sentinel');\r\n            return new DOMStorageWrapper(domStorage);\r\n        }\r\n    }\r\n    catch (e) { }\r\n    // Failed to create wrapper.  Just return in-memory storage.\r\n    // TODO: log?\r\n    return new MemoryStorage();\r\n};\r\n/** A storage object that lasts across sessions */\r\nvar PersistentStorage = createStoragefor('localStorage');\r\n/** A storage object that only lasts one session */\r\nvar SessionStorage = createStoragefor('sessionStorage');\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar logClient = new logger$1.Logger('@firebase/database');\r\n/**\r\n * Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).\r\n * @type {function(): number} Generated ID.\r\n */\r\nvar LUIDGenerator = (function () {\r\n    var id = 1;\r\n    return function () {\r\n        return id++;\r\n    };\r\n})();\r\n/**\r\n * Sha1 hash of the input string\r\n * @param {!string} str The string to hash\r\n * @return {!string} The resulting hash\r\n */\r\nvar sha1 = function (str) {\r\n    var utf8Bytes = util.stringToByteArray(str);\r\n    var sha1 = new util.Sha1();\r\n    sha1.update(utf8Bytes);\r\n    var sha1Bytes = sha1.digest();\r\n    return util.base64.encodeByteArray(sha1Bytes);\r\n};\r\n/**\r\n * @param {...*} var_args\r\n * @return {string}\r\n * @private\r\n */\r\nvar buildLogMessage_ = function () {\r\n    var var_args = [];\r\n    for (var _i = 0; _i < arguments.length; _i++) {\r\n        var_args[_i] = arguments[_i];\r\n    }\r\n    var message = '';\r\n    for (var i = 0; i < var_args.length; i++) {\r\n        if (Array.isArray(var_args[i]) ||\r\n            (var_args[i] &&\r\n                typeof var_args[i] === 'object' &&\r\n                typeof var_args[i].length === 'number')) {\r\n            message += buildLogMessage_.apply(null, var_args[i]);\r\n        }\r\n        else if (typeof var_args[i] === 'object') {\r\n            message += util.stringify(var_args[i]);\r\n        }\r\n        else {\r\n            message += var_args[i];\r\n        }\r\n        message += ' ';\r\n    }\r\n    return message;\r\n};\r\n/**\r\n * Use this for all debug messages in Firebase.\r\n * @type {?function(string)}\r\n */\r\nvar logger = null;\r\n/**\r\n * Flag to check for log availability on first log message\r\n * @type {boolean}\r\n * @private\r\n */\r\nvar firstLog_ = true;\r\n/**\r\n * The implementation of Firebase.enableLogging (defined here to break dependencies)\r\n * @param {boolean|?function(string)} logger_ A flag to turn on logging, or a custom logger\r\n * @param {boolean=} persistent Whether or not to persist logging settings across refreshes\r\n */\r\nvar enableLogging = function (logger_, persistent) {\r\n    util.assert(!persistent || (logger_ === true || logger_ === false), \"Can't turn on custom loggers persistently.\");\r\n    if (logger_ === true) {\r\n        logClient.logLevel = logger$1.LogLevel.VERBOSE;\r\n        logger = logClient.log.bind(logClient);\r\n        if (persistent)\r\n            SessionStorage.set('logging_enabled', true);\r\n    }\r\n    else if (typeof logger_ === 'function') {\r\n        logger = logger_;\r\n    }\r\n    else {\r\n        logger = null;\r\n        SessionStorage.remove('logging_enabled');\r\n    }\r\n};\r\n/**\r\n *\r\n * @param {...(string|Arguments)} var_args\r\n */\r\nvar log = function () {\r\n    var var_args = [];\r\n    for (var _i = 0; _i < arguments.length; _i++) {\r\n        var_args[_i] = arguments[_i];\r\n    }\r\n    if (firstLog_ === true) {\r\n        firstLog_ = false;\r\n        if (logger === null && SessionStorage.get('logging_enabled') === true)\r\n            enableLogging(true);\r\n    }\r\n    if (logger) {\r\n        var message = buildLogMessage_.apply(null, var_args);\r\n        logger(message);\r\n    }\r\n};\r\n/**\r\n * @param {!string} prefix\r\n * @return {function(...[*])}\r\n */\r\nvar logWrapper = function (prefix) {\r\n    return function () {\r\n        var var_args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            var_args[_i] = arguments[_i];\r\n        }\r\n        log.apply(void 0, [prefix].concat(var_args));\r\n    };\r\n};\r\n/**\r\n * @param {...string} var_args\r\n */\r\nvar error = function () {\r\n    var var_args = [];\r\n    for (var _i = 0; _i < arguments.length; _i++) {\r\n        var_args[_i] = arguments[_i];\r\n    }\r\n    var message = 'FIREBASE INTERNAL ERROR: ' + buildLogMessage_.apply(void 0, var_args);\r\n    logClient.error(message);\r\n};\r\n/**\r\n * @param {...string} var_args\r\n */\r\nvar fatal = function () {\r\n    var var_args = [];\r\n    for (var _i = 0; _i < arguments.length; _i++) {\r\n        var_args[_i] = arguments[_i];\r\n    }\r\n    var message = \"FIREBASE FATAL ERROR: \" + buildLogMessage_.apply(void 0, var_args);\r\n    logClient.error(message);\r\n    throw new Error(message);\r\n};\r\n/**\r\n * @param {...*} var_args\r\n */\r\nvar warn = function () {\r\n    var var_args = [];\r\n    for (var _i = 0; _i < arguments.length; _i++) {\r\n        var_args[_i] = arguments[_i];\r\n    }\r\n    var message = 'FIREBASE WARNING: ' + buildLogMessage_.apply(void 0, var_args);\r\n    logClient.warn(message);\r\n};\r\n/**\r\n * Logs a warning if the containing page uses https. Called when a call to new Firebase\r\n * does not use https.\r\n */\r\nvar warnIfPageIsSecure = function () {\r\n    // Be very careful accessing browser globals. Who knows what may or may not exist.\r\n    if (typeof window !== 'undefined' &&\r\n        window.location &&\r\n        window.location.protocol &&\r\n        window.location.protocol.indexOf('https:') !== -1) {\r\n        warn('Insecure Firebase access from a secure page. ' +\r\n            'Please use https in calls to new Firebase().');\r\n    }\r\n};\r\n/**\r\n * Returns true if data is NaN, or +/- Infinity.\r\n * @param {*} data\r\n * @return {boolean}\r\n */\r\nvar isInvalidJSONNumber = function (data) {\r\n    return (typeof data === 'number' &&\r\n        (data != data || // NaN\r\n            data == Number.POSITIVE_INFINITY ||\r\n            data == Number.NEGATIVE_INFINITY));\r\n};\r\n/**\r\n * @param {function()} fn\r\n */\r\nvar executeWhenDOMReady = function (fn) {\r\n    if (util.isNodeSdk() || document.readyState === 'complete') {\r\n        fn();\r\n    }\r\n    else {\r\n        // Modeled after jQuery. Try DOMContentLoaded and onreadystatechange (which\r\n        // fire before onload), but fall back to onload.\r\n        var called_1 = false;\r\n        var wrappedFn_1 = function () {\r\n            if (!document.body) {\r\n                setTimeout(wrappedFn_1, Math.floor(10));\r\n                return;\r\n            }\r\n            if (!called_1) {\r\n                called_1 = true;\r\n                fn();\r\n            }\r\n        };\r\n        if (document.addEventListener) {\r\n            document.addEventListener('DOMContentLoaded', wrappedFn_1, false);\r\n            // fallback to onload.\r\n            window.addEventListener('load', wrappedFn_1, false);\r\n        }\r\n        else if (document.attachEvent) {\r\n            // IE.\r\n            document.attachEvent('onreadystatechange', function () {\r\n                if (document.readyState === 'complete')\r\n                    wrappedFn_1();\r\n            });\r\n            // fallback to onload.\r\n            window.attachEvent('onload', wrappedFn_1);\r\n            // jQuery has an extra hack for IE that we could employ (based on\r\n            // http://javascript.nwbox.com/IEContentLoaded/) But it looks really old.\r\n            // I'm hoping we don't need it.\r\n        }\r\n    }\r\n};\r\n/**\r\n * Minimum key name. Invalid for actual data, used as a marker to sort before any valid names\r\n * @type {!string}\r\n */\r\nvar MIN_NAME = '[MIN_NAME]';\r\n/**\r\n * Maximum key name. Invalid for actual data, used as a marker to sort above any valid names\r\n * @type {!string}\r\n */\r\nvar MAX_NAME = '[MAX_NAME]';\r\n/**\r\n * Compares valid Firebase key names, plus min and max name\r\n * @param {!string} a\r\n * @param {!string} b\r\n * @return {!number}\r\n */\r\nvar nameCompare = function (a, b) {\r\n    if (a === b) {\r\n        return 0;\r\n    }\r\n    else if (a === MIN_NAME || b === MAX_NAME) {\r\n        return -1;\r\n    }\r\n    else if (b === MIN_NAME || a === MAX_NAME) {\r\n        return 1;\r\n    }\r\n    else {\r\n        var aAsInt = tryParseInt(a), bAsInt = tryParseInt(b);\r\n        if (aAsInt !== null) {\r\n            if (bAsInt !== null) {\r\n                return aAsInt - bAsInt == 0 ? a.length - b.length : aAsInt - bAsInt;\r\n            }\r\n            else {\r\n                return -1;\r\n            }\r\n        }\r\n        else if (bAsInt !== null) {\r\n            return 1;\r\n        }\r\n        else {\r\n            return a < b ? -1 : 1;\r\n        }\r\n    }\r\n};\r\n/**\r\n * @param {!string} a\r\n * @param {!string} b\r\n * @return {!number} comparison result.\r\n */\r\nvar stringCompare = function (a, b) {\r\n    if (a === b) {\r\n        return 0;\r\n    }\r\n    else if (a < b) {\r\n        return -1;\r\n    }\r\n    else {\r\n        return 1;\r\n    }\r\n};\r\n/**\r\n * @param {string} key\r\n * @param {Object} obj\r\n * @return {*}\r\n */\r\nvar requireKey = function (key, obj) {\r\n    if (obj && key in obj) {\r\n        return obj[key];\r\n    }\r\n    else {\r\n        throw new Error('Missing required key (' + key + ') in object: ' + util.stringify(obj));\r\n    }\r\n};\r\n/**\r\n * @param {*} obj\r\n * @return {string}\r\n */\r\nvar ObjectToUniqueKey = function (obj) {\r\n    if (typeof obj !== 'object' || obj === null)\r\n        return util.stringify(obj);\r\n    var keys = [];\r\n    for (var k in obj) {\r\n        keys.push(k);\r\n    }\r\n    // Export as json, but with the keys sorted.\r\n    keys.sort();\r\n    var key = '{';\r\n    for (var i = 0; i < keys.length; i++) {\r\n        if (i !== 0)\r\n            key += ',';\r\n        key += util.stringify(keys[i]);\r\n        key += ':';\r\n        key += ObjectToUniqueKey(obj[keys[i]]);\r\n    }\r\n    key += '}';\r\n    return key;\r\n};\r\n/**\r\n * Splits a string into a number of smaller segments of maximum size\r\n * @param {!string} str The string\r\n * @param {!number} segsize The maximum number of chars in the string.\r\n * @return {Array.<string>} The string, split into appropriately-sized chunks\r\n */\r\nvar splitStringBySize = function (str, segsize) {\r\n    var len = str.length;\r\n    if (len <= segsize) {\r\n        return [str];\r\n    }\r\n    var dataSegs = [];\r\n    for (var c = 0; c < len; c += segsize) {\r\n        if (c + segsize > len) {\r\n            dataSegs.push(str.substring(c, len));\r\n        }\r\n        else {\r\n            dataSegs.push(str.substring(c, c + segsize));\r\n        }\r\n    }\r\n    return dataSegs;\r\n};\r\n/**\r\n * Apply a function to each (key, value) pair in an object or\r\n * apply a function to each (index, value) pair in an array\r\n * @param {!(Object|Array)} obj The object or array to iterate over\r\n * @param {function(?, ?)} fn The function to apply\r\n */\r\nvar each = function (obj, fn) {\r\n    if (Array.isArray(obj)) {\r\n        for (var i = 0; i < obj.length; ++i) {\r\n            fn(i, obj[i]);\r\n        }\r\n    }\r\n    else {\r\n        /**\r\n         * in the conversion of code we removed the goog.object.forEach\r\n         * function which did a value,key callback. We standardized on\r\n         * a single impl that does a key, value callback. So we invert\r\n         * to not have to touch the `each` code points\r\n         */\r\n        util.forEach(obj, function (key, val) { return fn(val, key); });\r\n    }\r\n};\r\n/**\r\n * Borrowed from http://hg.secondlife.com/llsd/src/tip/js/typedarray.js (MIT License)\r\n * I made one modification at the end and removed the NaN / Infinity\r\n * handling (since it seemed broken [caused an overflow] and we don't need it).  See MJL comments.\r\n * @param {!number} v A double\r\n * @return {string}\r\n */\r\nvar doubleToIEEE754String = function (v) {\r\n    util.assert(!isInvalidJSONNumber(v), 'Invalid JSON number'); // MJL\r\n    var ebits = 11, fbits = 52;\r\n    var bias = (1 << (ebits - 1)) - 1, s, e, f, ln, i, bits, str;\r\n    // Compute sign, exponent, fraction\r\n    // Skip NaN / Infinity handling --MJL.\r\n    if (v === 0) {\r\n        e = 0;\r\n        f = 0;\r\n        s = 1 / v === -Infinity ? 1 : 0;\r\n    }\r\n    else {\r\n        s = v < 0;\r\n        v = Math.abs(v);\r\n        if (v >= Math.pow(2, 1 - bias)) {\r\n            // Normalized\r\n            ln = Math.min(Math.floor(Math.log(v) / Math.LN2), bias);\r\n            e = ln + bias;\r\n            f = Math.round(v * Math.pow(2, fbits - ln) - Math.pow(2, fbits));\r\n        }\r\n        else {\r\n            // Denormalized\r\n            e = 0;\r\n            f = Math.round(v / Math.pow(2, 1 - bias - fbits));\r\n        }\r\n    }\r\n    // Pack sign, exponent, fraction\r\n    bits = [];\r\n    for (i = fbits; i; i -= 1) {\r\n        bits.push(f % 2 ? 1 : 0);\r\n        f = Math.floor(f / 2);\r\n    }\r\n    for (i = ebits; i; i -= 1) {\r\n        bits.push(e % 2 ? 1 : 0);\r\n        e = Math.floor(e / 2);\r\n    }\r\n    bits.push(s ? 1 : 0);\r\n    bits.reverse();\r\n    str = bits.join('');\r\n    // Return the data as a hex string. --MJL\r\n    var hexByteString = '';\r\n    for (i = 0; i < 64; i += 8) {\r\n        var hexByte = parseInt(str.substr(i, 8), 2).toString(16);\r\n        if (hexByte.length === 1)\r\n            hexByte = '0' + hexByte;\r\n        hexByteString = hexByteString + hexByte;\r\n    }\r\n    return hexByteString.toLowerCase();\r\n};\r\n/**\r\n * Used to detect if we're in a Chrome content script (which executes in an\r\n * isolated environment where long-polling doesn't work).\r\n * @return {boolean}\r\n */\r\nvar isChromeExtensionContentScript = function () {\r\n    return !!(typeof window === 'object' &&\r\n        window['chrome'] &&\r\n        window['chrome']['extension'] &&\r\n        !/^chrome/.test(window.location.href));\r\n};\r\n/**\r\n * Used to detect if we're in a Windows 8 Store app.\r\n * @return {boolean}\r\n */\r\nvar isWindowsStoreApp = function () {\r\n    // Check for the presence of a couple WinRT globals\r\n    return typeof Windows === 'object' && typeof Windows.UI === 'object';\r\n};\r\n/**\r\n * Converts a server error code to a Javascript Error\r\n * @param {!string} code\r\n * @param {!Query} query\r\n * @return {Error}\r\n */\r\nvar errorForServerCode = function (code, query) {\r\n    var reason = 'Unknown Error';\r\n    if (code === 'too_big') {\r\n        reason =\r\n            'The data requested exceeds the maximum size ' +\r\n                'that can be accessed with a single request.';\r\n    }\r\n    else if (code == 'permission_denied') {\r\n        reason = \"Client doesn't have permission to access the desired data.\";\r\n    }\r\n    else if (code == 'unavailable') {\r\n        reason = 'The service is unavailable';\r\n    }\r\n    var error = new Error(code + ' at ' + query.path.toString() + ': ' + reason);\r\n    error.code = code.toUpperCase();\r\n    return error;\r\n};\r\n/**\r\n * Used to test for integer-looking strings\r\n * @type {RegExp}\r\n * @private\r\n */\r\nvar INTEGER_REGEXP_ = new RegExp('^-?\\\\d{1,10}$');\r\n/**\r\n * If the string contains a 32-bit integer, return it.  Else return null.\r\n * @param {!string} str\r\n * @return {?number}\r\n */\r\nvar tryParseInt = function (str) {\r\n    if (INTEGER_REGEXP_.test(str)) {\r\n        var intVal = Number(str);\r\n        if (intVal >= -2147483648 && intVal <= 2147483647) {\r\n            return intVal;\r\n        }\r\n    }\r\n    return null;\r\n};\r\n/**\r\n * Helper to run some code but catch any exceptions and re-throw them later.\r\n * Useful for preventing user callbacks from breaking internal code.\r\n *\r\n * Re-throwing the exception from a setTimeout is a little evil, but it's very\r\n * convenient (we don't have to try to figure out when is a safe point to\r\n * re-throw it), and the behavior seems reasonable:\r\n *\r\n * * If you aren't pausing on exceptions, you get an error in the console with\r\n *   the correct stack trace.\r\n * * If you're pausing on all exceptions, the debugger will pause on your\r\n *   exception and then again when we rethrow it.\r\n * * If you're only pausing on uncaught exceptions, the debugger will only pause\r\n *   on us re-throwing it.\r\n *\r\n * @param {!function()} fn The code to guard.\r\n */\r\nvar exceptionGuard = function (fn) {\r\n    try {\r\n        fn();\r\n    }\r\n    catch (e) {\r\n        // Re-throw exception when it's safe.\r\n        setTimeout(function () {\r\n            // It used to be that \"throw e\" would result in a good console error with\r\n            // relevant context, but as of Chrome 39, you just get the firebase.js\r\n            // file/line number where we re-throw it, which is useless. So we log\r\n            // e.stack explicitly.\r\n            var stack = e.stack || '';\r\n            warn('Exception was thrown by user callback.', stack);\r\n            throw e;\r\n        }, Math.floor(0));\r\n    }\r\n};\r\n/**\r\n * @return {boolean} true if we think we're currently being crawled.\r\n */\r\nvar beingCrawled = function () {\r\n    var userAgent = (typeof window === 'object' &&\r\n        window['navigator'] &&\r\n        window['navigator']['userAgent']) ||\r\n        '';\r\n    // For now we whitelist the most popular crawlers.  We should refine this to be the set of crawlers we\r\n    // believe to support JavaScript/AJAX rendering.\r\n    // NOTE: Google Webmaster Tools doesn't really belong, but their \"This is how a visitor to your website\r\n    // would have seen the page\" is flaky if we don't treat it as a crawler.\r\n    return (userAgent.search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i) >= 0);\r\n};\r\n/**\r\n * Same as setTimeout() except on Node.JS it will /not/ prevent the process from exiting.\r\n *\r\n * It is removed with clearTimeout() as normal.\r\n *\r\n * @param {Function} fn Function to run.\r\n * @param {number} time Milliseconds to wait before running.\r\n * @return {number|Object} The setTimeout() return value.\r\n */\r\nvar setTimeoutNonBlocking = function (fn, time) {\r\n    var timeout = setTimeout(fn, time);\r\n    if (typeof timeout === 'object' && timeout['unref']) {\r\n        timeout['unref']();\r\n    }\r\n    return timeout;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An immutable object representing a parsed path.  It's immutable so that you\r\n * can pass them around to other functions without worrying about them changing\r\n * it.\r\n */\r\nvar Path = /** @class */ (function () {\r\n    /**\r\n     * @param {string|Array.<string>} pathOrString Path string to parse,\r\n     *      or another path, or the raw tokens array\r\n     * @param {number=} pieceNum\r\n     */\r\n    function Path(pathOrString, pieceNum) {\r\n        if (pieceNum === void 0) {\r\n            this.pieces_ = pathOrString.split('/');\r\n            // Remove empty pieces.\r\n            var copyTo = 0;\r\n            for (var i = 0; i < this.pieces_.length; i++) {\r\n                if (this.pieces_[i].length > 0) {\r\n                    this.pieces_[copyTo] = this.pieces_[i];\r\n                    copyTo++;\r\n                }\r\n            }\r\n            this.pieces_.length = copyTo;\r\n            this.pieceNum_ = 0;\r\n        }\r\n        else {\r\n            this.pieces_ = pathOrString;\r\n            this.pieceNum_ = pieceNum;\r\n        }\r\n    }\r\n    Object.defineProperty(Path, \"Empty\", {\r\n        /**\r\n         * Singleton to represent an empty path\r\n         *\r\n         * @const\r\n         */\r\n        get: function () {\r\n            return new Path('');\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Path.prototype.getFront = function () {\r\n        if (this.pieceNum_ >= this.pieces_.length)\r\n            return null;\r\n        return this.pieces_[this.pieceNum_];\r\n    };\r\n    /**\r\n     * @return {number} The number of segments in this path\r\n     */\r\n    Path.prototype.getLength = function () {\r\n        return this.pieces_.length - this.pieceNum_;\r\n    };\r\n    /**\r\n     * @return {!Path}\r\n     */\r\n    Path.prototype.popFront = function () {\r\n        var pieceNum = this.pieceNum_;\r\n        if (pieceNum < this.pieces_.length) {\r\n            pieceNum++;\r\n        }\r\n        return new Path(this.pieces_, pieceNum);\r\n    };\r\n    /**\r\n     * @return {?string}\r\n     */\r\n    Path.prototype.getBack = function () {\r\n        if (this.pieceNum_ < this.pieces_.length)\r\n            return this.pieces_[this.pieces_.length - 1];\r\n        return null;\r\n    };\r\n    Path.prototype.toString = function () {\r\n        var pathString = '';\r\n        for (var i = this.pieceNum_; i < this.pieces_.length; i++) {\r\n            if (this.pieces_[i] !== '')\r\n                pathString += '/' + this.pieces_[i];\r\n        }\r\n        return pathString || '/';\r\n    };\r\n    Path.prototype.toUrlEncodedString = function () {\r\n        var pathString = '';\r\n        for (var i = this.pieceNum_; i < this.pieces_.length; i++) {\r\n            if (this.pieces_[i] !== '')\r\n                pathString += '/' + encodeURIComponent(String(this.pieces_[i]));\r\n        }\r\n        return pathString || '/';\r\n    };\r\n    /**\r\n     * Shallow copy of the parts of the path.\r\n     *\r\n     * @param {number=} begin\r\n     * @return {!Array<string>}\r\n     */\r\n    Path.prototype.slice = function (begin) {\r\n        if (begin === void 0) { begin = 0; }\r\n        return this.pieces_.slice(this.pieceNum_ + begin);\r\n    };\r\n    /**\r\n     * @return {?Path}\r\n     */\r\n    Path.prototype.parent = function () {\r\n        if (this.pieceNum_ >= this.pieces_.length)\r\n            return null;\r\n        var pieces = [];\r\n        for (var i = this.pieceNum_; i < this.pieces_.length - 1; i++)\r\n            pieces.push(this.pieces_[i]);\r\n        return new Path(pieces, 0);\r\n    };\r\n    /**\r\n     * @param {string|!Path} childPathObj\r\n     * @return {!Path}\r\n     */\r\n    Path.prototype.child = function (childPathObj) {\r\n        var pieces = [];\r\n        for (var i = this.pieceNum_; i < this.pieces_.length; i++)\r\n            pieces.push(this.pieces_[i]);\r\n        if (childPathObj instanceof Path) {\r\n            for (var i = childPathObj.pieceNum_; i < childPathObj.pieces_.length; i++) {\r\n                pieces.push(childPathObj.pieces_[i]);\r\n            }\r\n        }\r\n        else {\r\n            var childPieces = childPathObj.split('/');\r\n            for (var i = 0; i < childPieces.length; i++) {\r\n                if (childPieces[i].length > 0)\r\n                    pieces.push(childPieces[i]);\r\n            }\r\n        }\r\n        return new Path(pieces, 0);\r\n    };\r\n    /**\r\n     * @return {boolean} True if there are no segments in this path\r\n     */\r\n    Path.prototype.isEmpty = function () {\r\n        return this.pieceNum_ >= this.pieces_.length;\r\n    };\r\n    /**\r\n     * @param {!Path} outerPath\r\n     * @param {!Path} innerPath\r\n     * @return {!Path} The path from outerPath to innerPath\r\n     */\r\n    Path.relativePath = function (outerPath, innerPath) {\r\n        var outer = outerPath.getFront(), inner = innerPath.getFront();\r\n        if (outer === null) {\r\n            return innerPath;\r\n        }\r\n        else if (outer === inner) {\r\n            return Path.relativePath(outerPath.popFront(), innerPath.popFront());\r\n        }\r\n        else {\r\n            throw new Error('INTERNAL ERROR: innerPath (' +\r\n                innerPath +\r\n                ') is not within ' +\r\n                'outerPath (' +\r\n                outerPath +\r\n                ')');\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Path} left\r\n     * @param {!Path} right\r\n     * @return {number} -1, 0, 1 if left is less, equal, or greater than the right.\r\n     */\r\n    Path.comparePaths = function (left, right) {\r\n        var leftKeys = left.slice();\r\n        var rightKeys = right.slice();\r\n        for (var i = 0; i < leftKeys.length && i < rightKeys.length; i++) {\r\n            var cmp = nameCompare(leftKeys[i], rightKeys[i]);\r\n            if (cmp !== 0)\r\n                return cmp;\r\n        }\r\n        if (leftKeys.length === rightKeys.length)\r\n            return 0;\r\n        return leftKeys.length < rightKeys.length ? -1 : 1;\r\n    };\r\n    /**\r\n     *\r\n     * @param {Path} other\r\n     * @return {boolean} true if paths are the same.\r\n     */\r\n    Path.prototype.equals = function (other) {\r\n        if (this.getLength() !== other.getLength()) {\r\n            return false;\r\n        }\r\n        for (var i = this.pieceNum_, j = other.pieceNum_; i <= this.pieces_.length; i++, j++) {\r\n            if (this.pieces_[i] !== other.pieces_[j]) {\r\n                return false;\r\n            }\r\n        }\r\n        return true;\r\n    };\r\n    /**\r\n     *\r\n     * @param {!Path} other\r\n     * @return {boolean} True if this path is a parent (or the same as) other\r\n     */\r\n    Path.prototype.contains = function (other) {\r\n        var i = this.pieceNum_;\r\n        var j = other.pieceNum_;\r\n        if (this.getLength() > other.getLength()) {\r\n            return false;\r\n        }\r\n        while (i < this.pieces_.length) {\r\n            if (this.pieces_[i] !== other.pieces_[j]) {\r\n                return false;\r\n            }\r\n            ++i;\r\n            ++j;\r\n        }\r\n        return true;\r\n    };\r\n    return Path;\r\n}()); // end Path\r\n/**\r\n * Dynamic (mutable) path used to count path lengths.\r\n *\r\n * This class is used to efficiently check paths for valid\r\n * length (in UTF8 bytes) and depth (used in path validation).\r\n *\r\n * Throws Error exception if path is ever invalid.\r\n *\r\n * The definition of a path always begins with '/'.\r\n */\r\nvar ValidationPath = /** @class */ (function () {\r\n    /**\r\n     * @param {!Path} path Initial Path.\r\n     * @param {string} errorPrefix_ Prefix for any error messages.\r\n     */\r\n    function ValidationPath(path, errorPrefix_) {\r\n        this.errorPrefix_ = errorPrefix_;\r\n        /** @type {!Array<string>} */\r\n        this.parts_ = path.slice();\r\n        /** @type {number} Initialize to number of '/' chars needed in path. */\r\n        this.byteLength_ = Math.max(1, this.parts_.length);\r\n        for (var i = 0; i < this.parts_.length; i++) {\r\n            this.byteLength_ += util.stringLength(this.parts_[i]);\r\n        }\r\n        this.checkValid_();\r\n    }\r\n    Object.defineProperty(ValidationPath, \"MAX_PATH_DEPTH\", {\r\n        /** @const {number} Maximum key depth. */\r\n        get: function () {\r\n            return 32;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(ValidationPath, \"MAX_PATH_LENGTH_BYTES\", {\r\n        /** @const {number} Maximum number of (UTF8) bytes in a Firebase path. */\r\n        get: function () {\r\n            return 768;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /** @param {string} child */\r\n    ValidationPath.prototype.push = function (child) {\r\n        // Count the needed '/'\r\n        if (this.parts_.length > 0) {\r\n            this.byteLength_ += 1;\r\n        }\r\n        this.parts_.push(child);\r\n        this.byteLength_ += util.stringLength(child);\r\n        this.checkValid_();\r\n    };\r\n    ValidationPath.prototype.pop = function () {\r\n        var last = this.parts_.pop();\r\n        this.byteLength_ -= util.stringLength(last);\r\n        // Un-count the previous '/'\r\n        if (this.parts_.length > 0) {\r\n            this.byteLength_ -= 1;\r\n        }\r\n    };\r\n    ValidationPath.prototype.checkValid_ = function () {\r\n        if (this.byteLength_ > ValidationPath.MAX_PATH_LENGTH_BYTES) {\r\n            throw new Error(this.errorPrefix_ +\r\n                'has a key path longer than ' +\r\n                ValidationPath.MAX_PATH_LENGTH_BYTES +\r\n                ' bytes (' +\r\n                this.byteLength_ +\r\n                ').');\r\n        }\r\n        if (this.parts_.length > ValidationPath.MAX_PATH_DEPTH) {\r\n            throw new Error(this.errorPrefix_ +\r\n                'path specified exceeds the maximum depth that can be written (' +\r\n                ValidationPath.MAX_PATH_DEPTH +\r\n                ') or object contains a cycle ' +\r\n                this.toErrorString());\r\n        }\r\n    };\r\n    /**\r\n     * String for use in error messages - uses '.' notation for path.\r\n     *\r\n     * @return {string}\r\n     */\r\n    ValidationPath.prototype.toErrorString = function () {\r\n        if (this.parts_.length == 0) {\r\n            return '';\r\n        }\r\n        return \"in property '\" + this.parts_.join('.') + \"'\";\r\n    };\r\n    return ValidationPath;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar PROTOCOL_VERSION = '5';\r\nvar VERSION_PARAM = 'v';\r\nvar TRANSPORT_SESSION_PARAM = 's';\r\nvar REFERER_PARAM = 'r';\r\nvar FORGE_REF = 'f';\r\nvar FORGE_DOMAIN = 'firebaseio.com';\r\nvar LAST_SESSION_PARAM = 'ls';\r\nvar WEBSOCKET = 'websocket';\r\nvar LONG_POLLING = 'long_polling';\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A class that holds metadata about a Repo object\r\n *\r\n * @constructor\r\n */\r\nvar RepoInfo = /** @class */ (function () {\r\n    /**\r\n     * @param {string} host Hostname portion of the url for the repo\r\n     * @param {boolean} secure Whether or not this repo is accessed over ssl\r\n     * @param {string} namespace The namespace represented by the repo\r\n     * @param {boolean} webSocketOnly Whether to prefer websockets over all other transports (used by Nest).\r\n     * @param {string=} persistenceKey Override the default session persistence storage key\r\n     */\r\n    function RepoInfo(host, secure, namespace, webSocketOnly, persistenceKey) {\r\n        if (persistenceKey === void 0) { persistenceKey = ''; }\r\n        this.secure = secure;\r\n        this.namespace = namespace;\r\n        this.webSocketOnly = webSocketOnly;\r\n        this.persistenceKey = persistenceKey;\r\n        this.host = host.toLowerCase();\r\n        this.domain = this.host.substr(this.host.indexOf('.') + 1);\r\n        this.internalHost = PersistentStorage.get('host:' + host) || this.host;\r\n    }\r\n    RepoInfo.prototype.needsQueryParam = function () {\r\n        return this.host !== this.internalHost || this.isCustomHost();\r\n    };\r\n    RepoInfo.prototype.isCacheableHost = function () {\r\n        return this.internalHost.substr(0, 2) === 's-';\r\n    };\r\n    RepoInfo.prototype.isDemoHost = function () {\r\n        return this.domain === 'firebaseio-demo.com';\r\n    };\r\n    RepoInfo.prototype.isCustomHost = function () {\r\n        return (this.domain !== 'firebaseio.com' && this.domain !== 'firebaseio-demo.com');\r\n    };\r\n    RepoInfo.prototype.updateHost = function (newHost) {\r\n        if (newHost !== this.internalHost) {\r\n            this.internalHost = newHost;\r\n            if (this.isCacheableHost()) {\r\n                PersistentStorage.set('host:' + this.host, this.internalHost);\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Returns the websocket URL for this repo\r\n     * @param {string} type of connection\r\n     * @param {Object} params list\r\n     * @return {string} The URL for this repo\r\n     */\r\n    RepoInfo.prototype.connectionURL = function (type, params) {\r\n        util.assert(typeof type === 'string', 'typeof type must == string');\r\n        util.assert(typeof params === 'object', 'typeof params must == object');\r\n        var connURL;\r\n        if (type === WEBSOCKET) {\r\n            connURL =\r\n                (this.secure ? 'wss://' : 'ws://') + this.internalHost + '/.ws?';\r\n        }\r\n        else if (type === LONG_POLLING) {\r\n            connURL =\r\n                (this.secure ? 'https://' : 'http://') + this.internalHost + '/.lp?';\r\n        }\r\n        else {\r\n            throw new Error('Unknown connection type: ' + type);\r\n        }\r\n        if (this.needsQueryParam()) {\r\n            params['ns'] = this.namespace;\r\n        }\r\n        var pairs = [];\r\n        util.forEach(params, function (key, value) {\r\n            pairs.push(key + '=' + value);\r\n        });\r\n        return connURL + pairs.join('&');\r\n    };\r\n    /** @return {string} */\r\n    RepoInfo.prototype.toString = function () {\r\n        var str = this.toURLString();\r\n        if (this.persistenceKey) {\r\n            str += '<' + this.persistenceKey + '>';\r\n        }\r\n        return str;\r\n    };\r\n    /** @return {string} */\r\n    RepoInfo.prototype.toURLString = function () {\r\n        return (this.secure ? 'https://' : 'http://') + this.host;\r\n    };\r\n    return RepoInfo;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param {!string} pathString\r\n * @return {string}\r\n */\r\nfunction decodePath(pathString) {\r\n    var pathStringDecoded = '';\r\n    var pieces = pathString.split('/');\r\n    for (var i = 0; i < pieces.length; i++) {\r\n        if (pieces[i].length > 0) {\r\n            var piece = pieces[i];\r\n            try {\r\n                piece = decodeURIComponent(piece.replace(/\\+/g, ' '));\r\n            }\r\n            catch (e) { }\r\n            pathStringDecoded += '/' + piece;\r\n        }\r\n    }\r\n    return pathStringDecoded;\r\n}\r\n/**\r\n * @param {!string} queryString\r\n * @return {!{[key:string]:string}} key value hash\r\n */\r\nfunction decodeQuery(queryString) {\r\n    var results = {};\r\n    if (queryString.charAt(0) === '?') {\r\n        queryString = queryString.substring(1);\r\n    }\r\n    for (var _i = 0, _a = queryString.split('&'); _i < _a.length; _i++) {\r\n        var segment = _a[_i];\r\n        if (segment.length === 0) {\r\n            continue;\r\n        }\r\n        var kv = segment.split('=');\r\n        if (kv.length === 2) {\r\n            results[decodeURIComponent(kv[0])] = decodeURIComponent(kv[1]);\r\n        }\r\n        else {\r\n            warn(\"Invalid query segment '\" + segment + \"' in query '\" + queryString + \"'\");\r\n        }\r\n    }\r\n    return results;\r\n}\r\n/**\r\n *\r\n * @param {!string} dataURL\r\n * @return {{repoInfo: !RepoInfo, path: !Path}}\r\n */\r\nvar parseRepoInfo = function (dataURL) {\r\n    var parsedUrl = parseURL(dataURL), namespace = parsedUrl.subdomain;\r\n    if (parsedUrl.domain === 'firebase') {\r\n        fatal(parsedUrl.host +\r\n            ' is no longer supported. ' +\r\n            'Please use <YOUR FIREBASE>.firebaseio.com instead');\r\n    }\r\n    // Catch common error of uninitialized namespace value.\r\n    if ((!namespace || namespace == 'undefined') &&\r\n        parsedUrl.domain !== 'localhost') {\r\n        fatal('Cannot parse Firebase url. Please use https://<YOUR FIREBASE>.firebaseio.com');\r\n    }\r\n    if (!parsedUrl.secure) {\r\n        warnIfPageIsSecure();\r\n    }\r\n    var webSocketOnly = parsedUrl.scheme === 'ws' || parsedUrl.scheme === 'wss';\r\n    return {\r\n        repoInfo: new RepoInfo(parsedUrl.host, parsedUrl.secure, namespace, webSocketOnly),\r\n        path: new Path(parsedUrl.pathString)\r\n    };\r\n};\r\n/**\r\n *\r\n * @param {!string} dataURL\r\n * @return {{host: string, port: number, domain: string, subdomain: string, secure: boolean, scheme: string, pathString: string}}\r\n */\r\nvar parseURL = function (dataURL) {\r\n    // Default to empty strings in the event of a malformed string.\r\n    var host = '', domain = '', subdomain = '', pathString = '';\r\n    // Always default to SSL, unless otherwise specified.\r\n    var secure = true, scheme = 'https', port = 443;\r\n    // Don't do any validation here. The caller is responsible for validating the result of parsing.\r\n    if (typeof dataURL === 'string') {\r\n        // Parse scheme.\r\n        var colonInd = dataURL.indexOf('//');\r\n        if (colonInd >= 0) {\r\n            scheme = dataURL.substring(0, colonInd - 1);\r\n            dataURL = dataURL.substring(colonInd + 2);\r\n        }\r\n        // Parse host, path, and query string.\r\n        var slashInd = dataURL.indexOf('/');\r\n        if (slashInd === -1) {\r\n            slashInd = dataURL.length;\r\n        }\r\n        var questionMarkInd = dataURL.indexOf('?');\r\n        if (questionMarkInd === -1) {\r\n            questionMarkInd = dataURL.length;\r\n        }\r\n        host = dataURL.substring(0, Math.min(slashInd, questionMarkInd));\r\n        if (slashInd < questionMarkInd) {\r\n            // For pathString, questionMarkInd will always come after slashInd\r\n            pathString = decodePath(dataURL.substring(slashInd, questionMarkInd));\r\n        }\r\n        var queryParams = decodeQuery(dataURL.substring(Math.min(dataURL.length, questionMarkInd)));\r\n        // If we have a port, use scheme for determining if it's secure.\r\n        colonInd = host.indexOf(':');\r\n        if (colonInd >= 0) {\r\n            secure = scheme === 'https' || scheme === 'wss';\r\n            port = parseInt(host.substring(colonInd + 1), 10);\r\n        }\r\n        else {\r\n            colonInd = dataURL.length;\r\n        }\r\n        var parts = host.split('.');\r\n        if (parts.length === 3) {\r\n            // Normalize namespaces to lowercase to share storage / connection.\r\n            domain = parts[1];\r\n            subdomain = parts[0].toLowerCase();\r\n        }\r\n        else if (parts.length === 2) {\r\n            domain = parts[0];\r\n        }\r\n        else if (parts[0].slice(0, colonInd).toLowerCase() === 'localhost') {\r\n            domain = 'localhost';\r\n        }\r\n        // Support `ns` query param if subdomain not already set\r\n        if (subdomain === '' && 'ns' in queryParams) {\r\n            subdomain = queryParams['ns'];\r\n        }\r\n    }\r\n    return {\r\n        host: host,\r\n        port: port,\r\n        domain: domain,\r\n        subdomain: subdomain,\r\n        secure: secure,\r\n        scheme: scheme,\r\n        pathString: pathString\r\n    };\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * True for invalid Firebase keys\r\n * @type {RegExp}\r\n * @private\r\n */\r\nvar INVALID_KEY_REGEX_ = /[\\[\\].#$\\/\\u0000-\\u001F\\u007F]/;\r\n/**\r\n * True for invalid Firebase paths.\r\n * Allows '/' in paths.\r\n * @type {RegExp}\r\n * @private\r\n */\r\nvar INVALID_PATH_REGEX_ = /[\\[\\].#$\\u0000-\\u001F\\u007F]/;\r\n/**\r\n * Maximum number of characters to allow in leaf value\r\n * @type {number}\r\n * @private\r\n */\r\nvar MAX_LEAF_SIZE_ = 10 * 1024 * 1024;\r\n/**\r\n * @param {*} key\r\n * @return {boolean}\r\n */\r\nvar isValidKey = function (key) {\r\n    return (typeof key === 'string' && key.length !== 0 && !INVALID_KEY_REGEX_.test(key));\r\n};\r\n/**\r\n * @param {string} pathString\r\n * @return {boolean}\r\n */\r\nvar isValidPathString = function (pathString) {\r\n    return (typeof pathString === 'string' &&\r\n        pathString.length !== 0 &&\r\n        !INVALID_PATH_REGEX_.test(pathString));\r\n};\r\n/**\r\n * @param {string} pathString\r\n * @return {boolean}\r\n */\r\nvar isValidRootPathString = function (pathString) {\r\n    if (pathString) {\r\n        // Allow '/.info/' at the beginning.\r\n        pathString = pathString.replace(/^\\/*\\.info(\\/|$)/, '/');\r\n    }\r\n    return isValidPathString(pathString);\r\n};\r\n/**\r\n * @param {*} priority\r\n * @return {boolean}\r\n */\r\nvar isValidPriority = function (priority) {\r\n    return (priority === null ||\r\n        typeof priority === 'string' ||\r\n        (typeof priority === 'number' && !isInvalidJSONNumber(priority)) ||\r\n        (priority && typeof priority === 'object' && util.contains(priority, '.sv')));\r\n};\r\n/**\r\n * Pre-validate a datum passed as an argument to Firebase function.\r\n *\r\n * @param {string} fnName\r\n * @param {number} argumentNumber\r\n * @param {*} data\r\n * @param {!Path} path\r\n * @param {boolean} optional\r\n */\r\nvar validateFirebaseDataArg = function (fnName, argumentNumber, data, path, optional) {\r\n    if (optional && data === undefined)\r\n        return;\r\n    validateFirebaseData(util.errorPrefix(fnName, argumentNumber, optional), data, path);\r\n};\r\n/**\r\n * Validate a data object client-side before sending to server.\r\n *\r\n * @param {string} errorPrefix\r\n * @param {*} data\r\n * @param {!Path|!ValidationPath} path_\r\n */\r\nvar validateFirebaseData = function (errorPrefix, data, path_) {\r\n    var path = path_ instanceof Path ? new ValidationPath(path_, errorPrefix) : path_;\r\n    if (data === undefined) {\r\n        throw new Error(errorPrefix + 'contains undefined ' + path.toErrorString());\r\n    }\r\n    if (typeof data === 'function') {\r\n        throw new Error(errorPrefix +\r\n            'contains a function ' +\r\n            path.toErrorString() +\r\n            ' with contents = ' +\r\n            data.toString());\r\n    }\r\n    if (isInvalidJSONNumber(data)) {\r\n        throw new Error(errorPrefix + 'contains ' + data.toString() + ' ' + path.toErrorString());\r\n    }\r\n    // Check max leaf size, but try to avoid the utf8 conversion if we can.\r\n    if (typeof data === 'string' &&\r\n        data.length > MAX_LEAF_SIZE_ / 3 &&\r\n        util.stringLength(data) > MAX_LEAF_SIZE_) {\r\n        throw new Error(errorPrefix +\r\n            'contains a string greater than ' +\r\n            MAX_LEAF_SIZE_ +\r\n            ' utf8 bytes ' +\r\n            path.toErrorString() +\r\n            \" ('\" +\r\n            data.substring(0, 50) +\r\n            \"...')\");\r\n    }\r\n    // TODO = Perf = Consider combining the recursive validation of keys into NodeFromJSON\r\n    // to save extra walking of large objects.\r\n    if (data && typeof data === 'object') {\r\n        var hasDotValue_1 = false, hasActualChild_1 = false;\r\n        util.forEach(data, function (key, value) {\r\n            if (key === '.value') {\r\n                hasDotValue_1 = true;\r\n            }\r\n            else if (key !== '.priority' && key !== '.sv') {\r\n                hasActualChild_1 = true;\r\n                if (!isValidKey(key)) {\r\n                    throw new Error(errorPrefix +\r\n                        ' contains an invalid key (' +\r\n                        key +\r\n                        ') ' +\r\n                        path.toErrorString() +\r\n                        '.  Keys must be non-empty strings ' +\r\n                        'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');\r\n                }\r\n            }\r\n            path.push(key);\r\n            validateFirebaseData(errorPrefix, value, path);\r\n            path.pop();\r\n        });\r\n        if (hasDotValue_1 && hasActualChild_1) {\r\n            throw new Error(errorPrefix +\r\n                ' contains \".value\" child ' +\r\n                path.toErrorString() +\r\n                ' in addition to actual children.');\r\n        }\r\n    }\r\n};\r\n/**\r\n * Pre-validate paths passed in the firebase function.\r\n *\r\n * @param {string} errorPrefix\r\n * @param {Array<!Path>} mergePaths\r\n */\r\nvar validateFirebaseMergePaths = function (errorPrefix, mergePaths) {\r\n    var i, curPath;\r\n    for (i = 0; i < mergePaths.length; i++) {\r\n        curPath = mergePaths[i];\r\n        var keys = curPath.slice();\r\n        for (var j = 0; j < keys.length; j++) {\r\n            if (keys[j] === '.priority' && j === keys.length - 1) ;\r\n            else if (!isValidKey(keys[j])) {\r\n                throw new Error(errorPrefix +\r\n                    'contains an invalid key (' +\r\n                    keys[j] +\r\n                    ') in path ' +\r\n                    curPath.toString() +\r\n                    '. Keys must be non-empty strings ' +\r\n                    'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');\r\n            }\r\n        }\r\n    }\r\n    // Check that update keys are not descendants of each other.\r\n    // We rely on the property that sorting guarantees that ancestors come\r\n    // right before descendants.\r\n    mergePaths.sort(Path.comparePaths);\r\n    var prevPath = null;\r\n    for (i = 0; i < mergePaths.length; i++) {\r\n        curPath = mergePaths[i];\r\n        if (prevPath !== null && prevPath.contains(curPath)) {\r\n            throw new Error(errorPrefix +\r\n                'contains a path ' +\r\n                prevPath.toString() +\r\n                ' that is ancestor of another path ' +\r\n                curPath.toString());\r\n        }\r\n        prevPath = curPath;\r\n    }\r\n};\r\n/**\r\n * pre-validate an object passed as an argument to firebase function (\r\n * must be an object - e.g. for firebase.update()).\r\n *\r\n * @param {string} fnName\r\n * @param {number} argumentNumber\r\n * @param {*} data\r\n * @param {!Path} path\r\n * @param {boolean} optional\r\n */\r\nvar validateFirebaseMergeDataArg = function (fnName, argumentNumber, data, path, optional) {\r\n    if (optional && data === undefined)\r\n        return;\r\n    var errorPrefix = util.errorPrefix(fnName, argumentNumber, optional);\r\n    if (!(data && typeof data === 'object') || Array.isArray(data)) {\r\n        throw new Error(errorPrefix + ' must be an object containing the children to replace.');\r\n    }\r\n    var mergePaths = [];\r\n    util.forEach(data, function (key, value) {\r\n        var curPath = new Path(key);\r\n        validateFirebaseData(errorPrefix, value, path.child(curPath));\r\n        if (curPath.getBack() === '.priority') {\r\n            if (!isValidPriority(value)) {\r\n                throw new Error(errorPrefix +\r\n                    \"contains an invalid value for '\" +\r\n                    curPath.toString() +\r\n                    \"', which must be a valid \" +\r\n                    'Firebase priority (a string, finite number, server value, or null).');\r\n            }\r\n        }\r\n        mergePaths.push(curPath);\r\n    });\r\n    validateFirebaseMergePaths(errorPrefix, mergePaths);\r\n};\r\nvar validatePriority = function (fnName, argumentNumber, priority, optional) {\r\n    if (optional && priority === undefined)\r\n        return;\r\n    if (isInvalidJSONNumber(priority))\r\n        throw new Error(util.errorPrefix(fnName, argumentNumber, optional) +\r\n            'is ' +\r\n            priority.toString() +\r\n            ', but must be a valid Firebase priority (a string, finite number, ' +\r\n            'server value, or null).');\r\n    // Special case to allow importing data with a .sv.\r\n    if (!isValidPriority(priority))\r\n        throw new Error(util.errorPrefix(fnName, argumentNumber, optional) +\r\n            'must be a valid Firebase priority ' +\r\n            '(a string, finite number, server value, or null).');\r\n};\r\nvar validateEventType = function (fnName, argumentNumber, eventType, optional) {\r\n    if (optional && eventType === undefined)\r\n        return;\r\n    switch (eventType) {\r\n        case 'value':\r\n        case 'child_added':\r\n        case 'child_removed':\r\n        case 'child_changed':\r\n        case 'child_moved':\r\n            break;\r\n        default:\r\n            throw new Error(util.errorPrefix(fnName, argumentNumber, optional) +\r\n                'must be a valid event type = \"value\", \"child_added\", \"child_removed\", ' +\r\n                '\"child_changed\", or \"child_moved\".');\r\n    }\r\n};\r\nvar validateKey = function (fnName, argumentNumber, key, optional) {\r\n    if (optional && key === undefined)\r\n        return;\r\n    if (!isValidKey(key))\r\n        throw new Error(util.errorPrefix(fnName, argumentNumber, optional) +\r\n            'was an invalid key = \"' +\r\n            key +\r\n            '\".  Firebase keys must be non-empty strings and ' +\r\n            'can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\").');\r\n};\r\nvar validatePathString = function (fnName, argumentNumber, pathString, optional) {\r\n    if (optional && pathString === undefined)\r\n        return;\r\n    if (!isValidPathString(pathString))\r\n        throw new Error(util.errorPrefix(fnName, argumentNumber, optional) +\r\n            'was an invalid path = \"' +\r\n            pathString +\r\n            '\". Paths must be non-empty strings and ' +\r\n            'can\\'t contain \".\", \"#\", \"$\", \"[\", or \"]\"');\r\n};\r\nvar validateRootPathString = function (fnName, argumentNumber, pathString, optional) {\r\n    if (pathString) {\r\n        // Allow '/.info/' at the beginning.\r\n        pathString = pathString.replace(/^\\/*\\.info(\\/|$)/, '/');\r\n    }\r\n    validatePathString(fnName, argumentNumber, pathString, optional);\r\n};\r\nvar validateWritablePath = function (fnName, path) {\r\n    if (path.getFront() === '.info') {\r\n        throw new Error(fnName + \" failed = Can't modify data under /.info/\");\r\n    }\r\n};\r\nvar validateUrl = function (fnName, argumentNumber, parsedUrl) {\r\n    // TODO = Validate server better.\r\n    var pathString = parsedUrl.path.toString();\r\n    if (!(typeof parsedUrl.repoInfo.host === 'string') ||\r\n        parsedUrl.repoInfo.host.length === 0 ||\r\n        (!isValidKey(parsedUrl.repoInfo.namespace) &&\r\n            parsedUrl.repoInfo.host.split(':')[0] !== 'localhost') ||\r\n        (pathString.length !== 0 && !isValidRootPathString(pathString))) {\r\n        throw new Error(util.errorPrefix(fnName, argumentNumber, false) +\r\n            'must be a valid firebase URL and ' +\r\n            'the path can\\'t contain \".\", \"#\", \"$\", \"[\", or \"]\".');\r\n    }\r\n};\r\nvar validateBoolean = function (fnName, argumentNumber, bool, optional) {\r\n    if (optional && bool === undefined)\r\n        return;\r\n    if (typeof bool !== 'boolean')\r\n        throw new Error(util.errorPrefix(fnName, argumentNumber, optional) + 'must be a boolean.');\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @constructor\r\n */\r\nvar OnDisconnect = /** @class */ (function () {\r\n    /**\r\n     * @param {!Repo} repo_\r\n     * @param {!Path} path_\r\n     */\r\n    function OnDisconnect(repo_, path_) {\r\n        this.repo_ = repo_;\r\n        this.path_ = path_;\r\n    }\r\n    /**\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */\r\n    OnDisconnect.prototype.cancel = function (onComplete) {\r\n        util.validateArgCount('OnDisconnect.cancel', 0, 1, arguments.length);\r\n        util.validateCallback('OnDisconnect.cancel', 1, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo_.onDisconnectCancel(this.path_, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */\r\n    OnDisconnect.prototype.remove = function (onComplete) {\r\n        util.validateArgCount('OnDisconnect.remove', 0, 1, arguments.length);\r\n        validateWritablePath('OnDisconnect.remove', this.path_);\r\n        util.validateCallback('OnDisconnect.remove', 1, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo_.onDisconnectSet(this.path_, null, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {*} value\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */\r\n    OnDisconnect.prototype.set = function (value, onComplete) {\r\n        util.validateArgCount('OnDisconnect.set', 1, 2, arguments.length);\r\n        validateWritablePath('OnDisconnect.set', this.path_);\r\n        validateFirebaseDataArg('OnDisconnect.set', 1, value, this.path_, false);\r\n        util.validateCallback('OnDisconnect.set', 2, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo_.onDisconnectSet(this.path_, value, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {*} value\r\n     * @param {number|string|null} priority\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */\r\n    OnDisconnect.prototype.setWithPriority = function (value, priority, onComplete) {\r\n        util.validateArgCount('OnDisconnect.setWithPriority', 2, 3, arguments.length);\r\n        validateWritablePath('OnDisconnect.setWithPriority', this.path_);\r\n        validateFirebaseDataArg('OnDisconnect.setWithPriority', 1, value, this.path_, false);\r\n        validatePriority('OnDisconnect.setWithPriority', 2, priority, false);\r\n        util.validateCallback('OnDisconnect.setWithPriority', 3, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo_.onDisconnectSetWithPriority(this.path_, value, priority, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {!Object} objectToMerge\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!firebase.Promise}\r\n     */\r\n    OnDisconnect.prototype.update = function (objectToMerge, onComplete) {\r\n        util.validateArgCount('OnDisconnect.update', 1, 2, arguments.length);\r\n        validateWritablePath('OnDisconnect.update', this.path_);\r\n        if (Array.isArray(objectToMerge)) {\r\n            var newObjectToMerge = {};\r\n            for (var i = 0; i < objectToMerge.length; ++i) {\r\n                newObjectToMerge['' + i] = objectToMerge[i];\r\n            }\r\n            objectToMerge = newObjectToMerge;\r\n            warn('Passing an Array to firebase.database.onDisconnect().update() is deprecated. Use set() if you want to overwrite the ' +\r\n                'existing data, or an Object with integer keys if you really do want to only update some of the children.');\r\n        }\r\n        validateFirebaseMergeDataArg('OnDisconnect.update', 1, objectToMerge, this.path_, false);\r\n        util.validateCallback('OnDisconnect.update', 2, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo_.onDisconnectUpdate(this.path_, objectToMerge, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    return OnDisconnect;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar TransactionResult = /** @class */ (function () {\r\n    /**\r\n     * A type for the resolve value of Firebase.transaction.\r\n     * @constructor\r\n     * @dict\r\n     * @param {boolean} committed\r\n     * @param {DataSnapshot} snapshot\r\n     */\r\n    function TransactionResult(committed, snapshot) {\r\n        this.committed = committed;\r\n        this.snapshot = snapshot;\r\n    }\r\n    // Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary\r\n    // for end-users\r\n    TransactionResult.prototype.toJSON = function () {\r\n        util.validateArgCount('TransactionResult.toJSON', 0, 1, arguments.length);\r\n        return { committed: this.committed, snapshot: this.snapshot.toJSON() };\r\n    };\r\n    return TransactionResult;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Fancy ID generator that creates 20-character string identifiers with the\r\n * following properties:\r\n *\r\n * 1. They're based on timestamp so that they sort *after* any existing ids.\r\n * 2. They contain 72-bits of random data after the timestamp so that IDs won't\r\n *    collide with other clients' IDs.\r\n * 3. They sort *lexicographically* (so the timestamp is converted to characters\r\n *    that will sort properly).\r\n * 4. They're monotonically increasing. Even if you generate more than one in\r\n *    the same timestamp, the latter ones will sort after the former ones. We do\r\n *    this by using the previous random bits but \"incrementing\" them by 1 (only\r\n *    in the case of a timestamp collision).\r\n */\r\nvar nextPushId = (function () {\r\n    // Modeled after base64 web-safe chars, but ordered by ASCII.\r\n    var PUSH_CHARS = '-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz';\r\n    // Timestamp of last push, used to prevent local collisions if you push twice\r\n    // in one ms.\r\n    var lastPushTime = 0;\r\n    // We generate 72-bits of randomness which get turned into 12 characters and\r\n    // appended to the timestamp to prevent collisions with other clients. We\r\n    // store the last characters we generated because in the event of a collision,\r\n    // we'll use those same characters except \"incremented\" by one.\r\n    var lastRandChars = [];\r\n    return function (now) {\r\n        var duplicateTime = now === lastPushTime;\r\n        lastPushTime = now;\r\n        var i;\r\n        var timeStampChars = new Array(8);\r\n        for (i = 7; i >= 0; i--) {\r\n            timeStampChars[i] = PUSH_CHARS.charAt(now % 64);\r\n            // NOTE: Can't use << here because javascript will convert to int and lose\r\n            // the upper bits.\r\n            now = Math.floor(now / 64);\r\n        }\r\n        util.assert(now === 0, 'Cannot push at time == 0');\r\n        var id = timeStampChars.join('');\r\n        if (!duplicateTime) {\r\n            for (i = 0; i < 12; i++) {\r\n                lastRandChars[i] = Math.floor(Math.random() * 64);\r\n            }\r\n        }\r\n        else {\r\n            // If the timestamp hasn't changed since last push, use the same random\r\n            // number, except incremented by 1.\r\n            for (i = 11; i >= 0 && lastRandChars[i] === 63; i--) {\r\n                lastRandChars[i] = 0;\r\n            }\r\n            lastRandChars[i]++;\r\n        }\r\n        for (i = 0; i < 12; i++) {\r\n            id += PUSH_CHARS.charAt(lastRandChars[i]);\r\n        }\r\n        util.assert(id.length === 20, 'nextPushId: Length should be 20.');\r\n        return id;\r\n    };\r\n})();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n *\r\n * @param {!string} name\r\n * @param {!Node} node\r\n * @constructor\r\n * @struct\r\n */\r\nvar NamedNode = /** @class */ (function () {\r\n    function NamedNode(name, node) {\r\n        this.name = name;\r\n        this.node = node;\r\n    }\r\n    /**\r\n     *\r\n     * @param {!string} name\r\n     * @param {!Node} node\r\n     * @return {NamedNode}\r\n     */\r\n    NamedNode.Wrap = function (name, node) {\r\n        return new NamedNode(name, node);\r\n    };\r\n    return NamedNode;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n *\r\n * @constructor\r\n */\r\nvar Index = /** @class */ (function () {\r\n    function Index() {\r\n    }\r\n    /**\r\n     * @return {function(!NamedNode, !NamedNode):number} A standalone comparison function for\r\n     * this index\r\n     */\r\n    Index.prototype.getCompare = function () {\r\n        return this.compare.bind(this);\r\n    };\r\n    /**\r\n     * Given a before and after value for a node, determine if the indexed value has changed. Even if they are different,\r\n     * it's possible that the changes are isolated to parts of the snapshot that are not indexed.\r\n     *\r\n     * @param {!Node} oldNode\r\n     * @param {!Node} newNode\r\n     * @return {boolean} True if the portion of the snapshot being indexed changed between oldNode and newNode\r\n     */\r\n    Index.prototype.indexedValueChanged = function (oldNode, newNode) {\r\n        var oldWrapped = new NamedNode(MIN_NAME, oldNode);\r\n        var newWrapped = new NamedNode(MIN_NAME, newNode);\r\n        return this.compare(oldWrapped, newWrapped) !== 0;\r\n    };\r\n    /**\r\n     * @return {!NamedNode} a node wrapper that will sort equal to or less than\r\n     * any other node wrapper, using this index\r\n     */\r\n    Index.prototype.minPost = function () {\r\n        return NamedNode.MIN;\r\n    };\r\n    return Index;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar __EMPTY_NODE;\r\nvar KeyIndex = /** @class */ (function (_super) {\r\n    tslib_1.__extends(KeyIndex, _super);\r\n    function KeyIndex() {\r\n        return _super !== null && _super.apply(this, arguments) || this;\r\n    }\r\n    Object.defineProperty(KeyIndex, \"__EMPTY_NODE\", {\r\n        get: function () {\r\n            return __EMPTY_NODE;\r\n        },\r\n        set: function (val) {\r\n            __EMPTY_NODE = val;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    KeyIndex.prototype.compare = function (a, b) {\r\n        return nameCompare(a.name, b.name);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    KeyIndex.prototype.isDefinedOn = function (node) {\r\n        // We could probably return true here (since every node has a key), but it's never called\r\n        // so just leaving unimplemented for now.\r\n        throw util.assertionError('KeyIndex.isDefinedOn not expected to be called.');\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    KeyIndex.prototype.indexedValueChanged = function (oldNode, newNode) {\r\n        return false; // The key for a node never changes.\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    KeyIndex.prototype.minPost = function () {\r\n        return NamedNode.MIN;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    KeyIndex.prototype.maxPost = function () {\r\n        // TODO: This should really be created once and cached in a static property, but\r\n        // NamedNode isn't defined yet, so I can't use it in a static.  Bleh.\r\n        return new NamedNode(MAX_NAME, __EMPTY_NODE);\r\n    };\r\n    /**\r\n     * @param {*} indexValue\r\n     * @param {string} name\r\n     * @return {!NamedNode}\r\n     */\r\n    KeyIndex.prototype.makePost = function (indexValue, name) {\r\n        util.assert(typeof indexValue === 'string', 'KeyIndex indexValue must always be a string.');\r\n        // We just use empty node, but it'll never be compared, since our comparator only looks at name.\r\n        return new NamedNode(indexValue, __EMPTY_NODE);\r\n    };\r\n    /**\r\n     * @return {!string} String representation for inclusion in a query spec\r\n     */\r\n    KeyIndex.prototype.toString = function () {\r\n        return '.key';\r\n    };\r\n    return KeyIndex;\r\n}(Index));\r\nvar KEY_INDEX = new KeyIndex();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar MAX_NODE;\r\nfunction setMaxNode(val) {\r\n    MAX_NODE = val;\r\n}\r\n/**\r\n * @param {(!string|!number)} priority\r\n * @return {!string}\r\n */\r\nvar priorityHashText = function (priority) {\r\n    if (typeof priority === 'number')\r\n        return 'number:' + doubleToIEEE754String(priority);\r\n    else\r\n        return 'string:' + priority;\r\n};\r\n/**\r\n * Validates that a priority snapshot Node is valid.\r\n *\r\n * @param {!Node} priorityNode\r\n */\r\nvar validatePriorityNode = function (priorityNode) {\r\n    if (priorityNode.isLeafNode()) {\r\n        var val = priorityNode.val();\r\n        util.assert(typeof val === 'string' ||\r\n            typeof val === 'number' ||\r\n            (typeof val === 'object' && util.contains(val, '.sv')), 'Priority must be a string or number.');\r\n    }\r\n    else {\r\n        util.assert(priorityNode === MAX_NODE || priorityNode.isEmpty(), 'priority of unexpected type.');\r\n    }\r\n    // Don't call getPriority() on MAX_NODE to avoid hitting assertion.\r\n    util.assert(priorityNode === MAX_NODE || priorityNode.getPriority().isEmpty(), \"Priority nodes can't have a priority of their own.\");\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar __childrenNodeConstructor;\r\n/**\r\n * LeafNode is a class for storing leaf nodes in a DataSnapshot.  It\r\n * implements Node and stores the value of the node (a string,\r\n * number, or boolean) accessible via getValue().\r\n */\r\nvar LeafNode = /** @class */ (function () {\r\n    /**\r\n     * @implements {Node}\r\n     * @param {!(string|number|boolean|Object)} value_ The value to store in this leaf node.\r\n     *                                         The object type is possible in the event of a deferred value\r\n     * @param {!Node=} priorityNode_ The priority of this node.\r\n     */\r\n    function LeafNode(value_, priorityNode_) {\r\n        if (priorityNode_ === void 0) { priorityNode_ = LeafNode.__childrenNodeConstructor.EMPTY_NODE; }\r\n        this.value_ = value_;\r\n        this.priorityNode_ = priorityNode_;\r\n        this.lazyHash_ = null;\r\n        util.assert(this.value_ !== undefined && this.value_ !== null, \"LeafNode shouldn't be created with null/undefined value.\");\r\n        validatePriorityNode(this.priorityNode_);\r\n    }\r\n    Object.defineProperty(LeafNode, \"__childrenNodeConstructor\", {\r\n        get: function () {\r\n            return __childrenNodeConstructor;\r\n        },\r\n        set: function (val) {\r\n            __childrenNodeConstructor = val;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.isLeafNode = function () {\r\n        return true;\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.getPriority = function () {\r\n        return this.priorityNode_;\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.updatePriority = function (newPriorityNode) {\r\n        return new LeafNode(this.value_, newPriorityNode);\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.getImmediateChild = function (childName) {\r\n        // Hack to treat priority as a regular child\r\n        if (childName === '.priority') {\r\n            return this.priorityNode_;\r\n        }\r\n        else {\r\n            return LeafNode.__childrenNodeConstructor.EMPTY_NODE;\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.getChild = function (path) {\r\n        if (path.isEmpty()) {\r\n            return this;\r\n        }\r\n        else if (path.getFront() === '.priority') {\r\n            return this.priorityNode_;\r\n        }\r\n        else {\r\n            return LeafNode.__childrenNodeConstructor.EMPTY_NODE;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LeafNode.prototype.hasChild = function () {\r\n        return false;\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.getPredecessorChildName = function (childName, childNode) {\r\n        return null;\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.updateImmediateChild = function (childName, newChildNode) {\r\n        if (childName === '.priority') {\r\n            return this.updatePriority(newChildNode);\r\n        }\r\n        else if (newChildNode.isEmpty() && childName !== '.priority') {\r\n            return this;\r\n        }\r\n        else {\r\n            return LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateImmediateChild(childName, newChildNode).updatePriority(this.priorityNode_);\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.updateChild = function (path, newChildNode) {\r\n        var front = path.getFront();\r\n        if (front === null) {\r\n            return newChildNode;\r\n        }\r\n        else if (newChildNode.isEmpty() && front !== '.priority') {\r\n            return this;\r\n        }\r\n        else {\r\n            util.assert(front !== '.priority' || path.getLength() === 1, '.priority must be the last token in a path');\r\n            return this.updateImmediateChild(front, LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateChild(path.popFront(), newChildNode));\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.isEmpty = function () {\r\n        return false;\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.numChildren = function () {\r\n        return 0;\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.forEachChild = function (index, action) {\r\n        return false;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LeafNode.prototype.val = function (exportFormat) {\r\n        if (exportFormat && !this.getPriority().isEmpty())\r\n            return {\r\n                '.value': this.getValue(),\r\n                '.priority': this.getPriority().val()\r\n            };\r\n        else\r\n            return this.getValue();\r\n    };\r\n    /** @inheritDoc */\r\n    LeafNode.prototype.hash = function () {\r\n        if (this.lazyHash_ === null) {\r\n            var toHash = '';\r\n            if (!this.priorityNode_.isEmpty())\r\n                toHash +=\r\n                    'priority:' +\r\n                        priorityHashText(this.priorityNode_.val()) +\r\n                        ':';\r\n            var type = typeof this.value_;\r\n            toHash += type + ':';\r\n            if (type === 'number') {\r\n                toHash += doubleToIEEE754String(this.value_);\r\n            }\r\n            else {\r\n                toHash += this.value_;\r\n            }\r\n            this.lazyHash_ = sha1(toHash);\r\n        }\r\n        return this.lazyHash_;\r\n    };\r\n    /**\r\n     * Returns the value of the leaf node.\r\n     * @return {Object|string|number|boolean} The value of the node.\r\n     */\r\n    LeafNode.prototype.getValue = function () {\r\n        return this.value_;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LeafNode.prototype.compareTo = function (other) {\r\n        if (other === LeafNode.__childrenNodeConstructor.EMPTY_NODE) {\r\n            return 1;\r\n        }\r\n        else if (other instanceof LeafNode.__childrenNodeConstructor) {\r\n            return -1;\r\n        }\r\n        else {\r\n            util.assert(other.isLeafNode(), 'Unknown node type');\r\n            return this.compareToLeafNode_(other);\r\n        }\r\n    };\r\n    /**\r\n     * Comparison specifically for two leaf nodes\r\n     * @param {!LeafNode} otherLeaf\r\n     * @return {!number}\r\n     * @private\r\n     */\r\n    LeafNode.prototype.compareToLeafNode_ = function (otherLeaf) {\r\n        var otherLeafType = typeof otherLeaf.value_;\r\n        var thisLeafType = typeof this.value_;\r\n        var otherIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(otherLeafType);\r\n        var thisIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(thisLeafType);\r\n        util.assert(otherIndex >= 0, 'Unknown leaf type: ' + otherLeafType);\r\n        util.assert(thisIndex >= 0, 'Unknown leaf type: ' + thisLeafType);\r\n        if (otherIndex === thisIndex) {\r\n            // Same type, compare values\r\n            if (thisLeafType === 'object') {\r\n                // Deferred value nodes are all equal, but we should also never get to this point...\r\n                return 0;\r\n            }\r\n            else {\r\n                // Note that this works because true > false, all others are number or string comparisons\r\n                if (this.value_ < otherLeaf.value_) {\r\n                    return -1;\r\n                }\r\n                else if (this.value_ === otherLeaf.value_) {\r\n                    return 0;\r\n                }\r\n                else {\r\n                    return 1;\r\n                }\r\n            }\r\n        }\r\n        else {\r\n            return thisIndex - otherIndex;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LeafNode.prototype.withIndex = function () {\r\n        return this;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LeafNode.prototype.isIndexed = function () {\r\n        return true;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LeafNode.prototype.equals = function (other) {\r\n        /**\r\n         * @inheritDoc\r\n         */\r\n        if (other === this) {\r\n            return true;\r\n        }\r\n        else if (other.isLeafNode()) {\r\n            var otherLeaf = other;\r\n            return (this.value_ === otherLeaf.value_ &&\r\n                this.priorityNode_.equals(otherLeaf.priorityNode_));\r\n        }\r\n        else {\r\n            return false;\r\n        }\r\n    };\r\n    /**\r\n     * The sort order for comparing leaf nodes of different types. If two leaf nodes have\r\n     * the same type, the comparison falls back to their value\r\n     * @type {Array.<!string>}\r\n     * @const\r\n     */\r\n    LeafNode.VALUE_TYPE_ORDER = ['object', 'boolean', 'number', 'string'];\r\n    return LeafNode;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar nodeFromJSON;\r\nvar MAX_NODE$1;\r\nfunction setNodeFromJSON(val) {\r\n    nodeFromJSON = val;\r\n}\r\nfunction setMaxNode$1(val) {\r\n    MAX_NODE$1 = val;\r\n}\r\n/**\r\n * @constructor\r\n * @extends {Index}\r\n * @private\r\n */\r\nvar PriorityIndex = /** @class */ (function (_super) {\r\n    tslib_1.__extends(PriorityIndex, _super);\r\n    function PriorityIndex() {\r\n        return _super !== null && _super.apply(this, arguments) || this;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PriorityIndex.prototype.compare = function (a, b) {\r\n        var aPriority = a.node.getPriority();\r\n        var bPriority = b.node.getPriority();\r\n        var indexCmp = aPriority.compareTo(bPriority);\r\n        if (indexCmp === 0) {\r\n            return nameCompare(a.name, b.name);\r\n        }\r\n        else {\r\n            return indexCmp;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PriorityIndex.prototype.isDefinedOn = function (node) {\r\n        return !node.getPriority().isEmpty();\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PriorityIndex.prototype.indexedValueChanged = function (oldNode, newNode) {\r\n        return !oldNode.getPriority().equals(newNode.getPriority());\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PriorityIndex.prototype.minPost = function () {\r\n        return NamedNode.MIN;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PriorityIndex.prototype.maxPost = function () {\r\n        return new NamedNode(MAX_NAME, new LeafNode('[PRIORITY-POST]', MAX_NODE$1));\r\n    };\r\n    /**\r\n     * @param {*} indexValue\r\n     * @param {string} name\r\n     * @return {!NamedNode}\r\n     */\r\n    PriorityIndex.prototype.makePost = function (indexValue, name) {\r\n        var priorityNode = nodeFromJSON(indexValue);\r\n        return new NamedNode(name, new LeafNode('[PRIORITY-POST]', priorityNode));\r\n    };\r\n    /**\r\n     * @return {!string} String representation for inclusion in a query spec\r\n     */\r\n    PriorityIndex.prototype.toString = function () {\r\n        return '.priority';\r\n    };\r\n    return PriorityIndex;\r\n}(Index));\r\nvar PRIORITY_INDEX = new PriorityIndex();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An iterator over an LLRBNode.\r\n */\r\nvar SortedMapIterator = /** @class */ (function () {\r\n    /**\r\n     * @template K, V, T\r\n     * @param {LLRBNode|LLRBEmptyNode} node Node to iterate.\r\n     * @param {?K} startKey\r\n     * @param {function(K, K): number} comparator\r\n     * @param {boolean} isReverse_ Whether or not to iterate in reverse\r\n     * @param {(function(K, V):T)=} resultGenerator_\r\n     */\r\n    function SortedMapIterator(node, startKey, comparator, isReverse_, resultGenerator_) {\r\n        if (resultGenerator_ === void 0) { resultGenerator_ = null; }\r\n        this.isReverse_ = isReverse_;\r\n        this.resultGenerator_ = resultGenerator_;\r\n        /** @private\r\n         * @type {Array.<!LLRBNode>}\r\n         */\r\n        this.nodeStack_ = [];\r\n        var cmp = 1;\r\n        while (!node.isEmpty()) {\r\n            node = node;\r\n            cmp = startKey ? comparator(node.key, startKey) : 1;\r\n            // flip the comparison if we're going in reverse\r\n            if (isReverse_)\r\n                cmp *= -1;\r\n            if (cmp < 0) {\r\n                // This node is less than our start key. ignore it\r\n                if (this.isReverse_) {\r\n                    node = node.left;\r\n                }\r\n                else {\r\n                    node = node.right;\r\n                }\r\n            }\r\n            else if (cmp === 0) {\r\n                // This node is exactly equal to our start key. Push it on the stack, but stop iterating;\r\n                this.nodeStack_.push(node);\r\n                break;\r\n            }\r\n            else {\r\n                // This node is greater than our start key, add it to the stack and move to the next one\r\n                this.nodeStack_.push(node);\r\n                if (this.isReverse_) {\r\n                    node = node.right;\r\n                }\r\n                else {\r\n                    node = node.left;\r\n                }\r\n            }\r\n        }\r\n    }\r\n    SortedMapIterator.prototype.getNext = function () {\r\n        if (this.nodeStack_.length === 0)\r\n            return null;\r\n        var node = this.nodeStack_.pop();\r\n        var result;\r\n        if (this.resultGenerator_)\r\n            result = this.resultGenerator_(node.key, node.value);\r\n        else\r\n            result = { key: node.key, value: node.value };\r\n        if (this.isReverse_) {\r\n            node = node.left;\r\n            while (!node.isEmpty()) {\r\n                this.nodeStack_.push(node);\r\n                node = node.right;\r\n            }\r\n        }\r\n        else {\r\n            node = node.right;\r\n            while (!node.isEmpty()) {\r\n                this.nodeStack_.push(node);\r\n                node = node.left;\r\n            }\r\n        }\r\n        return result;\r\n    };\r\n    SortedMapIterator.prototype.hasNext = function () {\r\n        return this.nodeStack_.length > 0;\r\n    };\r\n    SortedMapIterator.prototype.peek = function () {\r\n        if (this.nodeStack_.length === 0)\r\n            return null;\r\n        var node = this.nodeStack_[this.nodeStack_.length - 1];\r\n        if (this.resultGenerator_) {\r\n            return this.resultGenerator_(node.key, node.value);\r\n        }\r\n        else {\r\n            return { key: node.key, value: node.value };\r\n        }\r\n    };\r\n    return SortedMapIterator;\r\n}());\r\n/**\r\n * Represents a node in a Left-leaning Red-Black tree.\r\n */\r\nvar LLRBNode = /** @class */ (function () {\r\n    /**\r\n     * @template K, V\r\n     * @param {!K} key Key associated with this node.\r\n     * @param {!V} value Value associated with this node.\r\n     * @param {?boolean} color Whether this node is red.\r\n     * @param {?(LLRBNode|LLRBEmptyNode)=} left Left child.\r\n     * @param {?(LLRBNode|LLRBEmptyNode)=} right Right child.\r\n     */\r\n    function LLRBNode(key, value, color, left, right) {\r\n        this.key = key;\r\n        this.value = value;\r\n        this.color = color != null ? color : LLRBNode.RED;\r\n        this.left =\r\n            left != null ? left : SortedMap.EMPTY_NODE;\r\n        this.right =\r\n            right != null ? right : SortedMap.EMPTY_NODE;\r\n    }\r\n    /**\r\n     * Returns a copy of the current node, optionally replacing pieces of it.\r\n     *\r\n     * @param {?K} key New key for the node, or null.\r\n     * @param {?V} value New value for the node, or null.\r\n     * @param {?boolean} color New color for the node, or null.\r\n     * @param {?LLRBNode|LLRBEmptyNode} left New left child for the node, or null.\r\n     * @param {?LLRBNode|LLRBEmptyNode} right New right child for the node, or null.\r\n     * @return {!LLRBNode} The node copy.\r\n     */\r\n    LLRBNode.prototype.copy = function (key, value, color, left, right) {\r\n        return new LLRBNode(key != null ? key : this.key, value != null ? value : this.value, color != null ? color : this.color, left != null ? left : this.left, right != null ? right : this.right);\r\n    };\r\n    /**\r\n     * @return {number} The total number of nodes in the tree.\r\n     */\r\n    LLRBNode.prototype.count = function () {\r\n        return this.left.count() + 1 + this.right.count();\r\n    };\r\n    /**\r\n     * @return {boolean} True if the tree is empty.\r\n     */\r\n    LLRBNode.prototype.isEmpty = function () {\r\n        return false;\r\n    };\r\n    /**\r\n     * Traverses the tree in key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!K, !V):*} action Callback function to be called for each\r\n     *   node.  If it returns true, traversal is aborted.\r\n     * @return {*} The first truthy value returned by action, or the last falsey\r\n     *   value returned by action\r\n     */\r\n    LLRBNode.prototype.inorderTraversal = function (action) {\r\n        return (this.left.inorderTraversal(action) ||\r\n            action(this.key, this.value) ||\r\n            this.right.inorderTraversal(action));\r\n    };\r\n    /**\r\n     * Traverses the tree in reverse key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!Object, !Object)} action Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @return {*} True if traversal was aborted.\r\n     */\r\n    LLRBNode.prototype.reverseTraversal = function (action) {\r\n        return (this.right.reverseTraversal(action) ||\r\n            action(this.key, this.value) ||\r\n            this.left.reverseTraversal(action));\r\n    };\r\n    /**\r\n     * @return {!Object} The minimum node in the tree.\r\n     * @private\r\n     */\r\n    LLRBNode.prototype.min_ = function () {\r\n        if (this.left.isEmpty()) {\r\n            return this;\r\n        }\r\n        else {\r\n            return this.left.min_();\r\n        }\r\n    };\r\n    /**\r\n     * @return {!K} The maximum key in the tree.\r\n     */\r\n    LLRBNode.prototype.minKey = function () {\r\n        return this.min_().key;\r\n    };\r\n    /**\r\n     * @return {!K} The maximum key in the tree.\r\n     */\r\n    LLRBNode.prototype.maxKey = function () {\r\n        if (this.right.isEmpty()) {\r\n            return this.key;\r\n        }\r\n        else {\r\n            return this.right.maxKey();\r\n        }\r\n    };\r\n    /**\r\n     *\r\n     * @param {!Object} key Key to insert.\r\n     * @param {!Object} value Value to insert.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBNode} New tree, with the key/value added.\r\n     */\r\n    LLRBNode.prototype.insert = function (key, value, comparator) {\r\n        var cmp, n;\r\n        n = this;\r\n        cmp = comparator(key, n.key);\r\n        if (cmp < 0) {\r\n            n = n.copy(null, null, null, n.left.insert(key, value, comparator), null);\r\n        }\r\n        else if (cmp === 0) {\r\n            n = n.copy(null, value, null, null, null);\r\n        }\r\n        else {\r\n            n = n.copy(null, null, null, null, n.right.insert(key, value, comparator));\r\n        }\r\n        return n.fixUp_();\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the minimum key removed.\r\n     */\r\n    LLRBNode.prototype.removeMin_ = function () {\r\n        if (this.left.isEmpty()) {\r\n            return SortedMap.EMPTY_NODE;\r\n        }\r\n        var n = this;\r\n        if (!n.left.isRed_() && !n.left.left.isRed_())\r\n            n = n.moveRedLeft_();\r\n        n = n.copy(null, null, null, n.left.removeMin_(), null);\r\n        return n.fixUp_();\r\n    };\r\n    /**\r\n     * @param {!Object} key The key of the item to remove.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the specified item removed.\r\n     */\r\n    LLRBNode.prototype.remove = function (key, comparator) {\r\n        var n, smallest;\r\n        n = this;\r\n        if (comparator(key, n.key) < 0) {\r\n            if (!n.left.isEmpty() && !n.left.isRed_() && !n.left.left.isRed_()) {\r\n                n = n.moveRedLeft_();\r\n            }\r\n            n = n.copy(null, null, null, n.left.remove(key, comparator), null);\r\n        }\r\n        else {\r\n            if (n.left.isRed_())\r\n                n = n.rotateRight_();\r\n            if (!n.right.isEmpty() && !n.right.isRed_() && !n.right.left.isRed_()) {\r\n                n = n.moveRedRight_();\r\n            }\r\n            if (comparator(key, n.key) === 0) {\r\n                if (n.right.isEmpty()) {\r\n                    return SortedMap.EMPTY_NODE;\r\n                }\r\n                else {\r\n                    smallest = n.right.min_();\r\n                    n = n.copy(smallest.key, smallest.value, null, null, n.right.removeMin_());\r\n                }\r\n            }\r\n            n = n.copy(null, null, null, null, n.right.remove(key, comparator));\r\n        }\r\n        return n.fixUp_();\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {boolean} Whether this is a RED node.\r\n     */\r\n    LLRBNode.prototype.isRed_ = function () {\r\n        return this.color;\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {!LLRBNode} New tree after performing any needed rotations.\r\n     */\r\n    LLRBNode.prototype.fixUp_ = function () {\r\n        var n = this;\r\n        if (n.right.isRed_() && !n.left.isRed_())\r\n            n = n.rotateLeft_();\r\n        if (n.left.isRed_() && n.left.left.isRed_())\r\n            n = n.rotateRight_();\r\n        if (n.left.isRed_() && n.right.isRed_())\r\n            n = n.colorFlip_();\r\n        return n;\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after moveRedLeft.\r\n     */\r\n    LLRBNode.prototype.moveRedLeft_ = function () {\r\n        var n = this.colorFlip_();\r\n        if (n.right.left.isRed_()) {\r\n            n = n.copy(null, null, null, null, n.right.rotateRight_());\r\n            n = n.rotateLeft_();\r\n            n = n.colorFlip_();\r\n        }\r\n        return n;\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after moveRedRight.\r\n     */\r\n    LLRBNode.prototype.moveRedRight_ = function () {\r\n        var n = this.colorFlip_();\r\n        if (n.left.left.isRed_()) {\r\n            n = n.rotateRight_();\r\n            n = n.colorFlip_();\r\n        }\r\n        return n;\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after rotateLeft.\r\n     */\r\n    LLRBNode.prototype.rotateLeft_ = function () {\r\n        var nl = this.copy(null, null, LLRBNode.RED, null, this.right.left);\r\n        return this.right.copy(null, null, this.color, nl, null);\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after rotateRight.\r\n     */\r\n    LLRBNode.prototype.rotateRight_ = function () {\r\n        var nr = this.copy(null, null, LLRBNode.RED, this.left.right, null);\r\n        return this.left.copy(null, null, this.color, null, nr);\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {!LLRBNode} New tree, after colorFlip.\r\n     */\r\n    LLRBNode.prototype.colorFlip_ = function () {\r\n        var left = this.left.copy(null, null, !this.left.color, null, null);\r\n        var right = this.right.copy(null, null, !this.right.color, null, null);\r\n        return this.copy(null, null, !this.color, left, right);\r\n    };\r\n    /**\r\n     * For testing.\r\n     *\r\n     * @private\r\n     * @return {boolean} True if all is well.\r\n     */\r\n    LLRBNode.prototype.checkMaxDepth_ = function () {\r\n        var blackDepth = this.check_();\r\n        return Math.pow(2.0, blackDepth) <= this.count() + 1;\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {number} Not sure what this returns exactly. :-).\r\n     */\r\n    LLRBNode.prototype.check_ = function () {\r\n        var blackDepth;\r\n        if (this.isRed_() && this.left.isRed_()) {\r\n            throw new Error('Red node has red child(' + this.key + ',' + this.value + ')');\r\n        }\r\n        if (this.right.isRed_()) {\r\n            throw new Error('Right child of (' + this.key + ',' + this.value + ') is red');\r\n        }\r\n        blackDepth = this.left.check_();\r\n        if (blackDepth !== this.right.check_()) {\r\n            throw new Error('Black depths differ');\r\n        }\r\n        else {\r\n            return blackDepth + (this.isRed_() ? 0 : 1);\r\n        }\r\n    };\r\n    LLRBNode.RED = true;\r\n    LLRBNode.BLACK = false;\r\n    return LLRBNode;\r\n}());\r\n/**\r\n * Represents an empty node (a leaf node in the Red-Black Tree).\r\n */\r\nvar LLRBEmptyNode = /** @class */ (function () {\r\n    function LLRBEmptyNode() {\r\n    }\r\n    /**\r\n     * Returns a copy of the current node.\r\n     *\r\n     * @return {!LLRBEmptyNode} The node copy.\r\n     */\r\n    LLRBEmptyNode.prototype.copy = function (key, value, color, left, right) {\r\n        return this;\r\n    };\r\n    /**\r\n     * Returns a copy of the tree, with the specified key/value added.\r\n     *\r\n     * @param {!K} key Key to be added.\r\n     * @param {!V} value Value to be added.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBNode} New tree, with item added.\r\n     */\r\n    LLRBEmptyNode.prototype.insert = function (key, value, comparator) {\r\n        return new LLRBNode(key, value, null);\r\n    };\r\n    /**\r\n     * Returns a copy of the tree, with the specified key removed.\r\n     *\r\n     * @param {!K} key The key to remove.\r\n     * @param {Comparator} comparator Comparator.\r\n     * @return {!LLRBEmptyNode} New tree, with item removed.\r\n     */\r\n    LLRBEmptyNode.prototype.remove = function (key, comparator) {\r\n        return this;\r\n    };\r\n    /**\r\n     * @return {number} The total number of nodes in the tree.\r\n     */\r\n    LLRBEmptyNode.prototype.count = function () {\r\n        return 0;\r\n    };\r\n    /**\r\n     * @return {boolean} True if the tree is empty.\r\n     */\r\n    LLRBEmptyNode.prototype.isEmpty = function () {\r\n        return true;\r\n    };\r\n    /**\r\n     * Traverses the tree in key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!K, !V):*} action Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @return {boolean} True if traversal was aborted.\r\n     */\r\n    LLRBEmptyNode.prototype.inorderTraversal = function (action) {\r\n        return false;\r\n    };\r\n    /**\r\n     * Traverses the tree in reverse key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param {function(!K, !V)} action Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @return {boolean} True if traversal was aborted.\r\n     */\r\n    LLRBEmptyNode.prototype.reverseTraversal = function (action) {\r\n        return false;\r\n    };\r\n    /**\r\n     * @return {null}\r\n     */\r\n    LLRBEmptyNode.prototype.minKey = function () {\r\n        return null;\r\n    };\r\n    /**\r\n     * @return {null}\r\n     */\r\n    LLRBEmptyNode.prototype.maxKey = function () {\r\n        return null;\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {number} Not sure what this returns exactly. :-).\r\n     */\r\n    LLRBEmptyNode.prototype.check_ = function () {\r\n        return 0;\r\n    };\r\n    /**\r\n     * @private\r\n     * @return {boolean} Whether this node is red.\r\n     */\r\n    LLRBEmptyNode.prototype.isRed_ = function () {\r\n        return false;\r\n    };\r\n    return LLRBEmptyNode;\r\n}());\r\n/**\r\n * An immutable sorted map implementation, based on a Left-leaning Red-Black\r\n * tree.\r\n */\r\nvar SortedMap = /** @class */ (function () {\r\n    /**\r\n     * @template K, V\r\n     * @param {function(K, K):number} comparator_ Key comparator.\r\n     * @param {LLRBNode=} root_ (Optional) Root node for the map.\r\n     */\r\n    function SortedMap(comparator_, root_) {\r\n        if (root_ === void 0) { root_ = SortedMap.EMPTY_NODE; }\r\n        this.comparator_ = comparator_;\r\n        this.root_ = root_;\r\n    }\r\n    /**\r\n     * Returns a copy of the map, with the specified key/value added or replaced.\r\n     * (TODO: We should perhaps rename this method to 'put')\r\n     *\r\n     * @param {!K} key Key to be added.\r\n     * @param {!V} value Value to be added.\r\n     * @return {!SortedMap.<K, V>} New map, with item added.\r\n     */\r\n    SortedMap.prototype.insert = function (key, value) {\r\n        return new SortedMap(this.comparator_, this.root_\r\n            .insert(key, value, this.comparator_)\r\n            .copy(null, null, LLRBNode.BLACK, null, null));\r\n    };\r\n    /**\r\n     * Returns a copy of the map, with the specified key removed.\r\n     *\r\n     * @param {!K} key The key to remove.\r\n     * @return {!SortedMap.<K, V>} New map, with item removed.\r\n     */\r\n    SortedMap.prototype.remove = function (key) {\r\n        return new SortedMap(this.comparator_, this.root_\r\n            .remove(key, this.comparator_)\r\n            .copy(null, null, LLRBNode.BLACK, null, null));\r\n    };\r\n    /**\r\n     * Returns the value of the node with the given key, or null.\r\n     *\r\n     * @param {!K} key The key to look up.\r\n     * @return {?V} The value of the node with the given key, or null if the\r\n     * key doesn't exist.\r\n     */\r\n    SortedMap.prototype.get = function (key) {\r\n        var cmp;\r\n        var node = this.root_;\r\n        while (!node.isEmpty()) {\r\n            cmp = this.comparator_(key, node.key);\r\n            if (cmp === 0) {\r\n                return node.value;\r\n            }\r\n            else if (cmp < 0) {\r\n                node = node.left;\r\n            }\r\n            else if (cmp > 0) {\r\n                node = node.right;\r\n            }\r\n        }\r\n        return null;\r\n    };\r\n    /**\r\n     * Returns the key of the item *before* the specified key, or null if key is the first item.\r\n     * @param {K} key The key to find the predecessor of\r\n     * @return {?K} The predecessor key.\r\n     */\r\n    SortedMap.prototype.getPredecessorKey = function (key) {\r\n        var cmp, node = this.root_, rightParent = null;\r\n        while (!node.isEmpty()) {\r\n            cmp = this.comparator_(key, node.key);\r\n            if (cmp === 0) {\r\n                if (!node.left.isEmpty()) {\r\n                    node = node.left;\r\n                    while (!node.right.isEmpty())\r\n                        node = node.right;\r\n                    return node.key;\r\n                }\r\n                else if (rightParent) {\r\n                    return rightParent.key;\r\n                }\r\n                else {\r\n                    return null; // first item.\r\n                }\r\n            }\r\n            else if (cmp < 0) {\r\n                node = node.left;\r\n            }\r\n            else if (cmp > 0) {\r\n                rightParent = node;\r\n                node = node.right;\r\n            }\r\n        }\r\n        throw new Error('Attempted to find predecessor key for a nonexistent key.  What gives?');\r\n    };\r\n    /**\r\n     * @return {boolean} True if the map is empty.\r\n     */\r\n    SortedMap.prototype.isEmpty = function () {\r\n        return this.root_.isEmpty();\r\n    };\r\n    /**\r\n     * @return {number} The total number of nodes in the map.\r\n     */\r\n    SortedMap.prototype.count = function () {\r\n        return this.root_.count();\r\n    };\r\n    /**\r\n     * @return {?K} The minimum key in the map.\r\n     */\r\n    SortedMap.prototype.minKey = function () {\r\n        return this.root_.minKey();\r\n    };\r\n    /**\r\n     * @return {?K} The maximum key in the map.\r\n     */\r\n    SortedMap.prototype.maxKey = function () {\r\n        return this.root_.maxKey();\r\n    };\r\n    /**\r\n     * Traverses the map in key order and calls the specified action function\r\n     * for each key/value pair.\r\n     *\r\n     * @param {function(!K, !V):*} action Callback function to be called\r\n     * for each key/value pair.  If action returns true, traversal is aborted.\r\n     * @return {*} The first truthy value returned by action, or the last falsey\r\n     *   value returned by action\r\n     */\r\n    SortedMap.prototype.inorderTraversal = function (action) {\r\n        return this.root_.inorderTraversal(action);\r\n    };\r\n    /**\r\n     * Traverses the map in reverse key order and calls the specified action function\r\n     * for each key/value pair.\r\n     *\r\n     * @param {function(!Object, !Object)} action Callback function to be called\r\n     * for each key/value pair.  If action returns true, traversal is aborted.\r\n     * @return {*} True if the traversal was aborted.\r\n     */\r\n    SortedMap.prototype.reverseTraversal = function (action) {\r\n        return this.root_.reverseTraversal(action);\r\n    };\r\n    /**\r\n     * Returns an iterator over the SortedMap.\r\n     * @template T\r\n     * @param {(function(K, V):T)=} resultGenerator\r\n     * @return {SortedMapIterator.<K, V, T>} The iterator.\r\n     */\r\n    SortedMap.prototype.getIterator = function (resultGenerator) {\r\n        return new SortedMapIterator(this.root_, null, this.comparator_, false, resultGenerator);\r\n    };\r\n    SortedMap.prototype.getIteratorFrom = function (key, resultGenerator) {\r\n        return new SortedMapIterator(this.root_, key, this.comparator_, false, resultGenerator);\r\n    };\r\n    SortedMap.prototype.getReverseIteratorFrom = function (key, resultGenerator) {\r\n        return new SortedMapIterator(this.root_, key, this.comparator_, true, resultGenerator);\r\n    };\r\n    SortedMap.prototype.getReverseIterator = function (resultGenerator) {\r\n        return new SortedMapIterator(this.root_, null, this.comparator_, true, resultGenerator);\r\n    };\r\n    /**\r\n     * Always use the same empty node, to reduce memory.\r\n     * @const\r\n     */\r\n    SortedMap.EMPTY_NODE = new LLRBEmptyNode();\r\n    return SortedMap;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar LOG_2 = Math.log(2);\r\n/**\r\n * @constructor\r\n */\r\nvar Base12Num = /** @class */ (function () {\r\n    /**\r\n     * @param {number} length\r\n     */\r\n    function Base12Num(length) {\r\n        var logBase2 = function (num) {\r\n            return parseInt((Math.log(num) / LOG_2), 10);\r\n        };\r\n        var bitMask = function (bits) { return parseInt(Array(bits + 1).join('1'), 2); };\r\n        this.count = logBase2(length + 1);\r\n        this.current_ = this.count - 1;\r\n        var mask = bitMask(this.count);\r\n        this.bits_ = (length + 1) & mask;\r\n    }\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    Base12Num.prototype.nextBitIsOne = function () {\r\n        //noinspection JSBitwiseOperatorUsage\r\n        var result = !(this.bits_ & (0x1 << this.current_));\r\n        this.current_--;\r\n        return result;\r\n    };\r\n    return Base12Num;\r\n}());\r\n/**\r\n * Takes a list of child nodes and constructs a SortedSet using the given comparison\r\n * function\r\n *\r\n * Uses the algorithm described in the paper linked here:\r\n * http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.46.1458\r\n *\r\n * @template K, V\r\n * @param {Array.<!NamedNode>} childList Unsorted list of children\r\n * @param {function(!NamedNode, !NamedNode):number} cmp The comparison method to be used\r\n * @param {(function(NamedNode):K)=} keyFn An optional function to extract K from a node wrapper, if K's\r\n *                                                        type is not NamedNode\r\n * @param {(function(K, K):number)=} mapSortFn An optional override for comparator used by the generated sorted map\r\n * @return {SortedMap.<K, V>}\r\n */\r\nvar buildChildSet = function (childList, cmp, keyFn, mapSortFn) {\r\n    childList.sort(cmp);\r\n    var buildBalancedTree = function (low, high) {\r\n        var length = high - low;\r\n        var namedNode;\r\n        var key;\r\n        if (length == 0) {\r\n            return null;\r\n        }\r\n        else if (length == 1) {\r\n            namedNode = childList[low];\r\n            key = keyFn ? keyFn(namedNode) : namedNode;\r\n            return new LLRBNode(key, namedNode.node, LLRBNode.BLACK, null, null);\r\n        }\r\n        else {\r\n            var middle = parseInt((length / 2), 10) + low;\r\n            var left = buildBalancedTree(low, middle);\r\n            var right = buildBalancedTree(middle + 1, high);\r\n            namedNode = childList[middle];\r\n            key = keyFn ? keyFn(namedNode) : namedNode;\r\n            return new LLRBNode(key, namedNode.node, LLRBNode.BLACK, left, right);\r\n        }\r\n    };\r\n    var buildFrom12Array = function (base12) {\r\n        var node = null;\r\n        var root = null;\r\n        var index = childList.length;\r\n        var buildPennant = function (chunkSize, color) {\r\n            var low = index - chunkSize;\r\n            var high = index;\r\n            index -= chunkSize;\r\n            var childTree = buildBalancedTree(low + 1, high);\r\n            var namedNode = childList[low];\r\n            var key = keyFn ? keyFn(namedNode) : namedNode;\r\n            attachPennant(new LLRBNode(key, namedNode.node, color, null, childTree));\r\n        };\r\n        var attachPennant = function (pennant) {\r\n            if (node) {\r\n                node.left = pennant;\r\n                node = pennant;\r\n            }\r\n            else {\r\n                root = pennant;\r\n                node = pennant;\r\n            }\r\n        };\r\n        for (var i = 0; i < base12.count; ++i) {\r\n            var isOne = base12.nextBitIsOne();\r\n            // The number of nodes taken in each slice is 2^(arr.length - (i + 1))\r\n            var chunkSize = Math.pow(2, base12.count - (i + 1));\r\n            if (isOne) {\r\n                buildPennant(chunkSize, LLRBNode.BLACK);\r\n            }\r\n            else {\r\n                // current == 2\r\n                buildPennant(chunkSize, LLRBNode.BLACK);\r\n                buildPennant(chunkSize, LLRBNode.RED);\r\n            }\r\n        }\r\n        return root;\r\n    };\r\n    var base12 = new Base12Num(childList.length);\r\n    var root = buildFrom12Array(base12);\r\n    return new SortedMap(mapSortFn || cmp, root);\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar _defaultIndexMap;\r\nvar fallbackObject = {};\r\n/**\r\n *\r\n * @param {Object.<string, FallbackType|SortedMap.<NamedNode, Node>>} indexes\r\n * @param {Object.<string, Index>} indexSet\r\n * @constructor\r\n */\r\nvar IndexMap = /** @class */ (function () {\r\n    function IndexMap(indexes_, indexSet_) {\r\n        this.indexes_ = indexes_;\r\n        this.indexSet_ = indexSet_;\r\n    }\r\n    Object.defineProperty(IndexMap, \"Default\", {\r\n        /**\r\n         * The default IndexMap for nodes without a priority\r\n         * @type {!IndexMap}\r\n         * @const\r\n         */\r\n        get: function () {\r\n            util.assert(fallbackObject && PRIORITY_INDEX, 'ChildrenNode.ts has not been loaded');\r\n            _defaultIndexMap =\r\n                _defaultIndexMap ||\r\n                    new IndexMap({ '.priority': fallbackObject }, { '.priority': PRIORITY_INDEX });\r\n            return _defaultIndexMap;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     *\r\n     * @param {!string} indexKey\r\n     * @return {?SortedMap.<NamedNode, Node>}\r\n     */\r\n    IndexMap.prototype.get = function (indexKey) {\r\n        var sortedMap = util.safeGet(this.indexes_, indexKey);\r\n        if (!sortedMap)\r\n            throw new Error('No index defined for ' + indexKey);\r\n        if (sortedMap === fallbackObject) {\r\n            // The index exists, but it falls back to just name comparison. Return null so that the calling code uses the\r\n            // regular child map\r\n            return null;\r\n        }\r\n        else {\r\n            return sortedMap;\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Index} indexDefinition\r\n     * @return {boolean}\r\n     */\r\n    IndexMap.prototype.hasIndex = function (indexDefinition) {\r\n        return util.contains(this.indexSet_, indexDefinition.toString());\r\n    };\r\n    /**\r\n     * @param {!Index} indexDefinition\r\n     * @param {!SortedMap.<string, !Node>} existingChildren\r\n     * @return {!IndexMap}\r\n     */\r\n    IndexMap.prototype.addIndex = function (indexDefinition, existingChildren) {\r\n        util.assert(indexDefinition !== KEY_INDEX, \"KeyIndex always exists and isn't meant to be added to the IndexMap.\");\r\n        var childList = [];\r\n        var sawIndexedValue = false;\r\n        var iter = existingChildren.getIterator(NamedNode.Wrap);\r\n        var next = iter.getNext();\r\n        while (next) {\r\n            sawIndexedValue =\r\n                sawIndexedValue || indexDefinition.isDefinedOn(next.node);\r\n            childList.push(next);\r\n            next = iter.getNext();\r\n        }\r\n        var newIndex;\r\n        if (sawIndexedValue) {\r\n            newIndex = buildChildSet(childList, indexDefinition.getCompare());\r\n        }\r\n        else {\r\n            newIndex = fallbackObject;\r\n        }\r\n        var indexName = indexDefinition.toString();\r\n        var newIndexSet = util.clone(this.indexSet_);\r\n        newIndexSet[indexName] = indexDefinition;\r\n        var newIndexes = util.clone(this.indexes_);\r\n        newIndexes[indexName] = newIndex;\r\n        return new IndexMap(newIndexes, newIndexSet);\r\n    };\r\n    /**\r\n     * Ensure that this node is properly tracked in any indexes that we're maintaining\r\n     * @param {!NamedNode} namedNode\r\n     * @param {!SortedMap.<string, !Node>} existingChildren\r\n     * @return {!IndexMap}\r\n     */\r\n    IndexMap.prototype.addToIndexes = function (namedNode, existingChildren) {\r\n        var _this = this;\r\n        var newIndexes = util.map(this.indexes_, function (indexedChildren, indexName) {\r\n            var index = util.safeGet(_this.indexSet_, indexName);\r\n            util.assert(index, 'Missing index implementation for ' + indexName);\r\n            if (indexedChildren === fallbackObject) {\r\n                // Check to see if we need to index everything\r\n                if (index.isDefinedOn(namedNode.node)) {\r\n                    // We need to build this index\r\n                    var childList = [];\r\n                    var iter = existingChildren.getIterator(NamedNode.Wrap);\r\n                    var next = iter.getNext();\r\n                    while (next) {\r\n                        if (next.name != namedNode.name) {\r\n                            childList.push(next);\r\n                        }\r\n                        next = iter.getNext();\r\n                    }\r\n                    childList.push(namedNode);\r\n                    return buildChildSet(childList, index.getCompare());\r\n                }\r\n                else {\r\n                    // No change, this remains a fallback\r\n                    return fallbackObject;\r\n                }\r\n            }\r\n            else {\r\n                var existingSnap = existingChildren.get(namedNode.name);\r\n                var newChildren = indexedChildren;\r\n                if (existingSnap) {\r\n                    newChildren = newChildren.remove(new NamedNode(namedNode.name, existingSnap));\r\n                }\r\n                return newChildren.insert(namedNode, namedNode.node);\r\n            }\r\n        });\r\n        return new IndexMap(newIndexes, this.indexSet_);\r\n    };\r\n    /**\r\n     * Create a new IndexMap instance with the given value removed\r\n     * @param {!NamedNode} namedNode\r\n     * @param {!SortedMap.<string, !Node>} existingChildren\r\n     * @return {!IndexMap}\r\n     */\r\n    IndexMap.prototype.removeFromIndexes = function (namedNode, existingChildren) {\r\n        var newIndexes = util.map(this.indexes_, function (indexedChildren) {\r\n            if (indexedChildren === fallbackObject) {\r\n                // This is the fallback. Just return it, nothing to do in this case\r\n                return indexedChildren;\r\n            }\r\n            else {\r\n                var existingSnap = existingChildren.get(namedNode.name);\r\n                if (existingSnap) {\r\n                    return indexedChildren.remove(new NamedNode(namedNode.name, existingSnap));\r\n                }\r\n                else {\r\n                    // No record of this child\r\n                    return indexedChildren;\r\n                }\r\n            }\r\n        });\r\n        return new IndexMap(newIndexes, this.indexSet_);\r\n    };\r\n    return IndexMap;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction NAME_ONLY_COMPARATOR(left, right) {\r\n    return nameCompare(left.name, right.name);\r\n}\r\nfunction NAME_COMPARATOR(left, right) {\r\n    return nameCompare(left, right);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// TODO: For memory savings, don't store priorityNode_ if it's empty.\r\nvar EMPTY_NODE;\r\n/**\r\n * ChildrenNode is a class for storing internal nodes in a DataSnapshot\r\n * (i.e. nodes with children).  It implements Node and stores the\r\n * list of children in the children property, sorted by child name.\r\n *\r\n * @constructor\r\n * @implements {Node}\r\n */\r\nvar ChildrenNode = /** @class */ (function () {\r\n    /**\r\n     *\r\n     * @param {!SortedMap.<string, !Node>} children_ List of children\r\n     * of this node..\r\n     * @param {?Node} priorityNode_ The priority of this node (as a snapshot node).\r\n     * @param {!IndexMap} indexMap_\r\n     */\r\n    function ChildrenNode(children_, priorityNode_, indexMap_) {\r\n        this.children_ = children_;\r\n        this.priorityNode_ = priorityNode_;\r\n        this.indexMap_ = indexMap_;\r\n        this.lazyHash_ = null;\r\n        /**\r\n         * Note: The only reason we allow null priority is for EMPTY_NODE, since we can't use\r\n         * EMPTY_NODE as the priority of EMPTY_NODE.  We might want to consider making EMPTY_NODE its own\r\n         * class instead of an empty ChildrenNode.\r\n         */\r\n        if (this.priorityNode_) {\r\n            validatePriorityNode(this.priorityNode_);\r\n        }\r\n        if (this.children_.isEmpty()) {\r\n            util.assert(!this.priorityNode_ || this.priorityNode_.isEmpty(), 'An empty node cannot have a priority');\r\n        }\r\n    }\r\n    Object.defineProperty(ChildrenNode, \"EMPTY_NODE\", {\r\n        get: function () {\r\n            return (EMPTY_NODE ||\r\n                (EMPTY_NODE = new ChildrenNode(new SortedMap(NAME_COMPARATOR), null, IndexMap.Default)));\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.isLeafNode = function () {\r\n        return false;\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.getPriority = function () {\r\n        return this.priorityNode_ || EMPTY_NODE;\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.updatePriority = function (newPriorityNode) {\r\n        if (this.children_.isEmpty()) {\r\n            // Don't allow priorities on empty nodes\r\n            return this;\r\n        }\r\n        else {\r\n            return new ChildrenNode(this.children_, newPriorityNode, this.indexMap_);\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.getImmediateChild = function (childName) {\r\n        // Hack to treat priority as a regular child\r\n        if (childName === '.priority') {\r\n            return this.getPriority();\r\n        }\r\n        else {\r\n            var child = this.children_.get(childName);\r\n            return child === null ? EMPTY_NODE : child;\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.getChild = function (path) {\r\n        var front = path.getFront();\r\n        if (front === null)\r\n            return this;\r\n        return this.getImmediateChild(front).getChild(path.popFront());\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.hasChild = function (childName) {\r\n        return this.children_.get(childName) !== null;\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.updateImmediateChild = function (childName, newChildNode) {\r\n        util.assert(newChildNode, 'We should always be passing snapshot nodes');\r\n        if (childName === '.priority') {\r\n            return this.updatePriority(newChildNode);\r\n        }\r\n        else {\r\n            var namedNode = new NamedNode(childName, newChildNode);\r\n            var newChildren = void 0, newIndexMap = void 0, newPriority = void 0;\r\n            if (newChildNode.isEmpty()) {\r\n                newChildren = this.children_.remove(childName);\r\n                newIndexMap = this.indexMap_.removeFromIndexes(namedNode, this.children_);\r\n            }\r\n            else {\r\n                newChildren = this.children_.insert(childName, newChildNode);\r\n                newIndexMap = this.indexMap_.addToIndexes(namedNode, this.children_);\r\n            }\r\n            newPriority = newChildren.isEmpty() ? EMPTY_NODE : this.priorityNode_;\r\n            return new ChildrenNode(newChildren, newPriority, newIndexMap);\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.updateChild = function (path, newChildNode) {\r\n        var front = path.getFront();\r\n        if (front === null) {\r\n            return newChildNode;\r\n        }\r\n        else {\r\n            util.assert(path.getFront() !== '.priority' || path.getLength() === 1, '.priority must be the last token in a path');\r\n            var newImmediateChild = this.getImmediateChild(front).updateChild(path.popFront(), newChildNode);\r\n            return this.updateImmediateChild(front, newImmediateChild);\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.isEmpty = function () {\r\n        return this.children_.isEmpty();\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.numChildren = function () {\r\n        return this.children_.count();\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.val = function (exportFormat) {\r\n        if (this.isEmpty())\r\n            return null;\r\n        var obj = {};\r\n        var numKeys = 0, maxKey = 0, allIntegerKeys = true;\r\n        this.forEachChild(PRIORITY_INDEX, function (key, childNode) {\r\n            obj[key] = childNode.val(exportFormat);\r\n            numKeys++;\r\n            if (allIntegerKeys && ChildrenNode.INTEGER_REGEXP_.test(key)) {\r\n                maxKey = Math.max(maxKey, Number(key));\r\n            }\r\n            else {\r\n                allIntegerKeys = false;\r\n            }\r\n        });\r\n        if (!exportFormat && allIntegerKeys && maxKey < 2 * numKeys) {\r\n            // convert to array.\r\n            var array = [];\r\n            for (var key in obj)\r\n                array[key] = obj[key];\r\n            return array;\r\n        }\r\n        else {\r\n            if (exportFormat && !this.getPriority().isEmpty()) {\r\n                obj['.priority'] = this.getPriority().val();\r\n            }\r\n            return obj;\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.hash = function () {\r\n        if (this.lazyHash_ === null) {\r\n            var toHash_1 = '';\r\n            if (!this.getPriority().isEmpty())\r\n                toHash_1 +=\r\n                    'priority:' +\r\n                        priorityHashText(this.getPriority().val()) +\r\n                        ':';\r\n            this.forEachChild(PRIORITY_INDEX, function (key, childNode) {\r\n                var childHash = childNode.hash();\r\n                if (childHash !== '')\r\n                    toHash_1 += ':' + key + ':' + childHash;\r\n            });\r\n            this.lazyHash_ = toHash_1 === '' ? '' : sha1(toHash_1);\r\n        }\r\n        return this.lazyHash_;\r\n    };\r\n    /** @inheritDoc */\r\n    ChildrenNode.prototype.getPredecessorChildName = function (childName, childNode, index) {\r\n        var idx = this.resolveIndex_(index);\r\n        if (idx) {\r\n            var predecessor = idx.getPredecessorKey(new NamedNode(childName, childNode));\r\n            return predecessor ? predecessor.name : null;\r\n        }\r\n        else {\r\n            return this.children_.getPredecessorKey(childName);\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Index} indexDefinition\r\n     * @return {?string}\r\n     */\r\n    ChildrenNode.prototype.getFirstChildName = function (indexDefinition) {\r\n        var idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            var minKey = idx.minKey();\r\n            return minKey && minKey.name;\r\n        }\r\n        else {\r\n            return this.children_.minKey();\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Index} indexDefinition\r\n     * @return {?NamedNode}\r\n     */\r\n    ChildrenNode.prototype.getFirstChild = function (indexDefinition) {\r\n        var minKey = this.getFirstChildName(indexDefinition);\r\n        if (minKey) {\r\n            return new NamedNode(minKey, this.children_.get(minKey));\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    };\r\n    /**\r\n     * Given an index, return the key name of the largest value we have, according to that index\r\n     * @param {!Index} indexDefinition\r\n     * @return {?string}\r\n     */\r\n    ChildrenNode.prototype.getLastChildName = function (indexDefinition) {\r\n        var idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            var maxKey = idx.maxKey();\r\n            return maxKey && maxKey.name;\r\n        }\r\n        else {\r\n            return this.children_.maxKey();\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Index} indexDefinition\r\n     * @return {?NamedNode}\r\n     */\r\n    ChildrenNode.prototype.getLastChild = function (indexDefinition) {\r\n        var maxKey = this.getLastChildName(indexDefinition);\r\n        if (maxKey) {\r\n            return new NamedNode(maxKey, this.children_.get(maxKey));\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildrenNode.prototype.forEachChild = function (index, action) {\r\n        var idx = this.resolveIndex_(index);\r\n        if (idx) {\r\n            return idx.inorderTraversal(function (wrappedNode) {\r\n                return action(wrappedNode.name, wrappedNode.node);\r\n            });\r\n        }\r\n        else {\r\n            return this.children_.inorderTraversal(action);\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Index} indexDefinition\r\n     * @return {SortedMapIterator}\r\n     */\r\n    ChildrenNode.prototype.getIterator = function (indexDefinition) {\r\n        return this.getIteratorFrom(indexDefinition.minPost(), indexDefinition);\r\n    };\r\n    /**\r\n     *\r\n     * @param {!NamedNode} startPost\r\n     * @param {!Index} indexDefinition\r\n     * @return {!SortedMapIterator}\r\n     */\r\n    ChildrenNode.prototype.getIteratorFrom = function (startPost, indexDefinition) {\r\n        var idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            return idx.getIteratorFrom(startPost, function (key) { return key; });\r\n        }\r\n        else {\r\n            var iterator = this.children_.getIteratorFrom(startPost.name, NamedNode.Wrap);\r\n            var next = iterator.peek();\r\n            while (next != null && indexDefinition.compare(next, startPost) < 0) {\r\n                iterator.getNext();\r\n                next = iterator.peek();\r\n            }\r\n            return iterator;\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Index} indexDefinition\r\n     * @return {!SortedMapIterator}\r\n     */\r\n    ChildrenNode.prototype.getReverseIterator = function (indexDefinition) {\r\n        return this.getReverseIteratorFrom(indexDefinition.maxPost(), indexDefinition);\r\n    };\r\n    /**\r\n     * @param {!NamedNode} endPost\r\n     * @param {!Index} indexDefinition\r\n     * @return {!SortedMapIterator}\r\n     */\r\n    ChildrenNode.prototype.getReverseIteratorFrom = function (endPost, indexDefinition) {\r\n        var idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            return idx.getReverseIteratorFrom(endPost, function (key) {\r\n                return key;\r\n            });\r\n        }\r\n        else {\r\n            var iterator = this.children_.getReverseIteratorFrom(endPost.name, NamedNode.Wrap);\r\n            var next = iterator.peek();\r\n            while (next != null && indexDefinition.compare(next, endPost) > 0) {\r\n                iterator.getNext();\r\n                next = iterator.peek();\r\n            }\r\n            return iterator;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildrenNode.prototype.compareTo = function (other) {\r\n        if (this.isEmpty()) {\r\n            if (other.isEmpty()) {\r\n                return 0;\r\n            }\r\n            else {\r\n                return -1;\r\n            }\r\n        }\r\n        else if (other.isLeafNode() || other.isEmpty()) {\r\n            return 1;\r\n        }\r\n        else if (other === MAX_NODE$2) {\r\n            return -1;\r\n        }\r\n        else {\r\n            // Must be another node with children.\r\n            return 0;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildrenNode.prototype.withIndex = function (indexDefinition) {\r\n        if (indexDefinition === KEY_INDEX ||\r\n            this.indexMap_.hasIndex(indexDefinition)) {\r\n            return this;\r\n        }\r\n        else {\r\n            var newIndexMap = this.indexMap_.addIndex(indexDefinition, this.children_);\r\n            return new ChildrenNode(this.children_, this.priorityNode_, newIndexMap);\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildrenNode.prototype.isIndexed = function (index) {\r\n        return index === KEY_INDEX || this.indexMap_.hasIndex(index);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildrenNode.prototype.equals = function (other) {\r\n        if (other === this) {\r\n            return true;\r\n        }\r\n        else if (other.isLeafNode()) {\r\n            return false;\r\n        }\r\n        else {\r\n            var otherChildrenNode = other;\r\n            if (!this.getPriority().equals(otherChildrenNode.getPriority())) {\r\n                return false;\r\n            }\r\n            else if (this.children_.count() === otherChildrenNode.children_.count()) {\r\n                var thisIter = this.getIterator(PRIORITY_INDEX);\r\n                var otherIter = otherChildrenNode.getIterator(PRIORITY_INDEX);\r\n                var thisCurrent = thisIter.getNext();\r\n                var otherCurrent = otherIter.getNext();\r\n                while (thisCurrent && otherCurrent) {\r\n                    if (thisCurrent.name !== otherCurrent.name ||\r\n                        !thisCurrent.node.equals(otherCurrent.node)) {\r\n                        return false;\r\n                    }\r\n                    thisCurrent = thisIter.getNext();\r\n                    otherCurrent = otherIter.getNext();\r\n                }\r\n                return thisCurrent === null && otherCurrent === null;\r\n            }\r\n            else {\r\n                return false;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Returns a SortedMap ordered by index, or null if the default (by-key) ordering can be used\r\n     * instead.\r\n     *\r\n     * @private\r\n     * @param {!Index} indexDefinition\r\n     * @return {?SortedMap.<NamedNode, Node>}\r\n     */\r\n    ChildrenNode.prototype.resolveIndex_ = function (indexDefinition) {\r\n        if (indexDefinition === KEY_INDEX) {\r\n            return null;\r\n        }\r\n        else {\r\n            return this.indexMap_.get(indexDefinition.toString());\r\n        }\r\n    };\r\n    /**\r\n     * @private\r\n     * @type {RegExp}\r\n     */\r\n    ChildrenNode.INTEGER_REGEXP_ = /^(0|[1-9]\\d*)$/;\r\n    return ChildrenNode;\r\n}());\r\n/**\r\n * @constructor\r\n * @extends {ChildrenNode}\r\n * @private\r\n */\r\nvar MaxNode = /** @class */ (function (_super) {\r\n    tslib_1.__extends(MaxNode, _super);\r\n    function MaxNode() {\r\n        return _super.call(this, new SortedMap(NAME_COMPARATOR), ChildrenNode.EMPTY_NODE, IndexMap.Default) || this;\r\n    }\r\n    MaxNode.prototype.compareTo = function (other) {\r\n        if (other === this) {\r\n            return 0;\r\n        }\r\n        else {\r\n            return 1;\r\n        }\r\n    };\r\n    MaxNode.prototype.equals = function (other) {\r\n        // Not that we every compare it, but MAX_NODE is only ever equal to itself\r\n        return other === this;\r\n    };\r\n    MaxNode.prototype.getPriority = function () {\r\n        return this;\r\n    };\r\n    MaxNode.prototype.getImmediateChild = function (childName) {\r\n        return ChildrenNode.EMPTY_NODE;\r\n    };\r\n    MaxNode.prototype.isEmpty = function () {\r\n        return false;\r\n    };\r\n    return MaxNode;\r\n}(ChildrenNode));\r\n/**\r\n * Marker that will sort higher than any other snapshot.\r\n * @type {!MAX_NODE}\r\n * @const\r\n */\r\nvar MAX_NODE$2 = new MaxNode();\r\nObject.defineProperties(NamedNode, {\r\n    MIN: {\r\n        value: new NamedNode(MIN_NAME, ChildrenNode.EMPTY_NODE)\r\n    },\r\n    MAX: {\r\n        value: new NamedNode(MAX_NAME, MAX_NODE$2)\r\n    }\r\n});\r\n/**\r\n * Reference Extensions\r\n */\r\nKeyIndex.__EMPTY_NODE = ChildrenNode.EMPTY_NODE;\r\nLeafNode.__childrenNodeConstructor = ChildrenNode;\r\nsetMaxNode(MAX_NODE$2);\r\nsetMaxNode$1(MAX_NODE$2);\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar USE_HINZE = true;\r\n/**\r\n * Constructs a snapshot node representing the passed JSON and returns it.\r\n * @param {*} json JSON to create a node for.\r\n * @param {?string|?number=} priority Optional priority to use.  This will be ignored if the\r\n * passed JSON contains a .priority property.\r\n * @return {!Node}\r\n */\r\nfunction nodeFromJSON$1(json, priority) {\r\n    if (priority === void 0) { priority = null; }\r\n    if (json === null) {\r\n        return ChildrenNode.EMPTY_NODE;\r\n    }\r\n    if (typeof json === 'object' && '.priority' in json) {\r\n        priority = json['.priority'];\r\n    }\r\n    util.assert(priority === null ||\r\n        typeof priority === 'string' ||\r\n        typeof priority === 'number' ||\r\n        (typeof priority === 'object' && '.sv' in priority), 'Invalid priority type found: ' + typeof priority);\r\n    if (typeof json === 'object' && '.value' in json && json['.value'] !== null) {\r\n        json = json['.value'];\r\n    }\r\n    // Valid leaf nodes include non-objects or server-value wrapper objects\r\n    if (typeof json !== 'object' || '.sv' in json) {\r\n        var jsonLeaf = json;\r\n        return new LeafNode(jsonLeaf, nodeFromJSON$1(priority));\r\n    }\r\n    if (!(json instanceof Array) && USE_HINZE) {\r\n        var children_1 = [];\r\n        var childrenHavePriority_1 = false;\r\n        var hinzeJsonObj_1 = json;\r\n        util.forEach(hinzeJsonObj_1, function (key, child) {\r\n            if (typeof key !== 'string' || key.substring(0, 1) !== '.') {\r\n                // Ignore metadata nodes\r\n                var childNode = nodeFromJSON$1(hinzeJsonObj_1[key]);\r\n                if (!childNode.isEmpty()) {\r\n                    childrenHavePriority_1 =\r\n                        childrenHavePriority_1 || !childNode.getPriority().isEmpty();\r\n                    children_1.push(new NamedNode(key, childNode));\r\n                }\r\n            }\r\n        });\r\n        if (children_1.length == 0) {\r\n            return ChildrenNode.EMPTY_NODE;\r\n        }\r\n        var childSet = buildChildSet(children_1, NAME_ONLY_COMPARATOR, function (namedNode) { return namedNode.name; }, NAME_COMPARATOR);\r\n        if (childrenHavePriority_1) {\r\n            var sortedChildSet = buildChildSet(children_1, PRIORITY_INDEX.getCompare());\r\n            return new ChildrenNode(childSet, nodeFromJSON$1(priority), new IndexMap({ '.priority': sortedChildSet }, { '.priority': PRIORITY_INDEX }));\r\n        }\r\n        else {\r\n            return new ChildrenNode(childSet, nodeFromJSON$1(priority), IndexMap.Default);\r\n        }\r\n    }\r\n    else {\r\n        var node_1 = ChildrenNode.EMPTY_NODE;\r\n        var jsonObj_1 = json;\r\n        util.forEach(jsonObj_1, function (key, childData) {\r\n            if (util.contains(jsonObj_1, key)) {\r\n                if (key.substring(0, 1) !== '.') {\r\n                    // ignore metadata nodes.\r\n                    var childNode = nodeFromJSON$1(childData);\r\n                    if (childNode.isLeafNode() || !childNode.isEmpty())\r\n                        node_1 = node_1.updateImmediateChild(key, childNode);\r\n                }\r\n            }\r\n        });\r\n        return node_1.updatePriority(nodeFromJSON$1(priority));\r\n    }\r\n}\r\nsetNodeFromJSON(nodeFromJSON$1);\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @constructor\r\n * @extends {Index}\r\n * @private\r\n */\r\nvar ValueIndex = /** @class */ (function (_super) {\r\n    tslib_1.__extends(ValueIndex, _super);\r\n    function ValueIndex() {\r\n        return _super !== null && _super.apply(this, arguments) || this;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueIndex.prototype.compare = function (a, b) {\r\n        var indexCmp = a.node.compareTo(b.node);\r\n        if (indexCmp === 0) {\r\n            return nameCompare(a.name, b.name);\r\n        }\r\n        else {\r\n            return indexCmp;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueIndex.prototype.isDefinedOn = function (node) {\r\n        return true;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueIndex.prototype.indexedValueChanged = function (oldNode, newNode) {\r\n        return !oldNode.equals(newNode);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueIndex.prototype.minPost = function () {\r\n        return NamedNode.MIN;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueIndex.prototype.maxPost = function () {\r\n        return NamedNode.MAX;\r\n    };\r\n    /**\r\n     * @param {*} indexValue\r\n     * @param {string} name\r\n     * @return {!NamedNode}\r\n     */\r\n    ValueIndex.prototype.makePost = function (indexValue, name) {\r\n        var valueNode = nodeFromJSON$1(indexValue);\r\n        return new NamedNode(name, valueNode);\r\n    };\r\n    /**\r\n     * @return {!string} String representation for inclusion in a query spec\r\n     */\r\n    ValueIndex.prototype.toString = function () {\r\n        return '.value';\r\n    };\r\n    return ValueIndex;\r\n}(Index));\r\nvar VALUE_INDEX = new ValueIndex();\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param {!Path} indexPath\r\n * @constructor\r\n * @extends {Index}\r\n */\r\nvar PathIndex = /** @class */ (function (_super) {\r\n    tslib_1.__extends(PathIndex, _super);\r\n    function PathIndex(indexPath_) {\r\n        var _this = _super.call(this) || this;\r\n        _this.indexPath_ = indexPath_;\r\n        util.assert(!indexPath_.isEmpty() && indexPath_.getFront() !== '.priority', \"Can't create PathIndex with empty path or .priority key\");\r\n        return _this;\r\n    }\r\n    /**\r\n     * @param {!Node} snap\r\n     * @return {!Node}\r\n     * @protected\r\n     */\r\n    PathIndex.prototype.extractChild = function (snap) {\r\n        return snap.getChild(this.indexPath_);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PathIndex.prototype.isDefinedOn = function (node) {\r\n        return !node.getChild(this.indexPath_).isEmpty();\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PathIndex.prototype.compare = function (a, b) {\r\n        var aChild = this.extractChild(a.node);\r\n        var bChild = this.extractChild(b.node);\r\n        var indexCmp = aChild.compareTo(bChild);\r\n        if (indexCmp === 0) {\r\n            return nameCompare(a.name, b.name);\r\n        }\r\n        else {\r\n            return indexCmp;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PathIndex.prototype.makePost = function (indexValue, name) {\r\n        var valueNode = nodeFromJSON$1(indexValue);\r\n        var node = ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_, valueNode);\r\n        return new NamedNode(name, node);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PathIndex.prototype.maxPost = function () {\r\n        var node = ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_, MAX_NODE$2);\r\n        return new NamedNode(MAX_NAME, node);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PathIndex.prototype.toString = function () {\r\n        return this.indexPath_.slice().join('/');\r\n    };\r\n    return PathIndex;\r\n}(Index));\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Class representing a firebase data snapshot.  It wraps a SnapshotNode and\r\n * surfaces the public methods (val, forEach, etc.) we want to expose.\r\n */\r\nvar DataSnapshot = /** @class */ (function () {\r\n    /**\r\n     * @param {!Node} node_ A SnapshotNode to wrap.\r\n     * @param {!Reference} ref_ The ref of the location this snapshot came from.\r\n     * @param {!Index} index_ The iteration order for this snapshot\r\n     */\r\n    function DataSnapshot(node_, ref_, index_) {\r\n        this.node_ = node_;\r\n        this.ref_ = ref_;\r\n        this.index_ = index_;\r\n    }\r\n    /**\r\n     * Retrieves the snapshot contents as JSON.  Returns null if the snapshot is\r\n     * empty.\r\n     *\r\n     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.\r\n     */\r\n    DataSnapshot.prototype.val = function () {\r\n        util.validateArgCount('DataSnapshot.val', 0, 0, arguments.length);\r\n        return this.node_.val();\r\n    };\r\n    /**\r\n     * Returns the snapshot contents as JSON, including priorities of node.  Suitable for exporting\r\n     * the entire node contents.\r\n     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.\r\n     */\r\n    DataSnapshot.prototype.exportVal = function () {\r\n        util.validateArgCount('DataSnapshot.exportVal', 0, 0, arguments.length);\r\n        return this.node_.val(true);\r\n    };\r\n    // Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary\r\n    // for end-users\r\n    DataSnapshot.prototype.toJSON = function () {\r\n        // Optional spacer argument is unnecessary because we're depending on recursion rather than stringifying the content\r\n        util.validateArgCount('DataSnapshot.toJSON', 0, 1, arguments.length);\r\n        return this.exportVal();\r\n    };\r\n    /**\r\n     * Returns whether the snapshot contains a non-null value.\r\n     *\r\n     * @return {boolean} Whether the snapshot contains a non-null value, or is empty.\r\n     */\r\n    DataSnapshot.prototype.exists = function () {\r\n        util.validateArgCount('DataSnapshot.exists', 0, 0, arguments.length);\r\n        return !this.node_.isEmpty();\r\n    };\r\n    /**\r\n     * Returns a DataSnapshot of the specified child node's contents.\r\n     *\r\n     * @param {!string} childPathString Path to a child.\r\n     * @return {!DataSnapshot} DataSnapshot for child node.\r\n     */\r\n    DataSnapshot.prototype.child = function (childPathString) {\r\n        util.validateArgCount('DataSnapshot.child', 0, 1, arguments.length);\r\n        // Ensure the childPath is a string (can be a number)\r\n        childPathString = String(childPathString);\r\n        validatePathString('DataSnapshot.child', 1, childPathString, false);\r\n        var childPath = new Path(childPathString);\r\n        var childRef = this.ref_.child(childPath);\r\n        return new DataSnapshot(this.node_.getChild(childPath), childRef, PRIORITY_INDEX);\r\n    };\r\n    /**\r\n     * Returns whether the snapshot contains a child at the specified path.\r\n     *\r\n     * @param {!string} childPathString Path to a child.\r\n     * @return {boolean} Whether the child exists.\r\n     */\r\n    DataSnapshot.prototype.hasChild = function (childPathString) {\r\n        util.validateArgCount('DataSnapshot.hasChild', 1, 1, arguments.length);\r\n        validatePathString('DataSnapshot.hasChild', 1, childPathString, false);\r\n        var childPath = new Path(childPathString);\r\n        return !this.node_.getChild(childPath).isEmpty();\r\n    };\r\n    /**\r\n     * Returns the priority of the object, or null if no priority was set.\r\n     *\r\n     * @return {string|number|null} The priority.\r\n     */\r\n    DataSnapshot.prototype.getPriority = function () {\r\n        util.validateArgCount('DataSnapshot.getPriority', 0, 0, arguments.length);\r\n        // typecast here because we never return deferred values or internal priorities (MAX_PRIORITY)\r\n        return this.node_.getPriority().val();\r\n    };\r\n    /**\r\n     * Iterates through child nodes and calls the specified action for each one.\r\n     *\r\n     * @param {function(!DataSnapshot)} action Callback function to be called\r\n     * for each child.\r\n     * @return {boolean} True if forEach was canceled by action returning true for\r\n     * one of the child nodes.\r\n     */\r\n    DataSnapshot.prototype.forEach = function (action) {\r\n        var _this = this;\r\n        util.validateArgCount('DataSnapshot.forEach', 1, 1, arguments.length);\r\n        util.validateCallback('DataSnapshot.forEach', 1, action, false);\r\n        if (this.node_.isLeafNode())\r\n            return false;\r\n        var childrenNode = this.node_;\r\n        // Sanitize the return value to a boolean. ChildrenNode.forEachChild has a weird return type...\r\n        return !!childrenNode.forEachChild(this.index_, function (key, node) {\r\n            return action(new DataSnapshot(node, _this.ref_.child(key), PRIORITY_INDEX));\r\n        });\r\n    };\r\n    /**\r\n     * Returns whether this DataSnapshot has children.\r\n     * @return {boolean} True if the DataSnapshot contains 1 or more child nodes.\r\n     */\r\n    DataSnapshot.prototype.hasChildren = function () {\r\n        util.validateArgCount('DataSnapshot.hasChildren', 0, 0, arguments.length);\r\n        if (this.node_.isLeafNode())\r\n            return false;\r\n        else\r\n            return !this.node_.isEmpty();\r\n    };\r\n    Object.defineProperty(DataSnapshot.prototype, \"key\", {\r\n        get: function () {\r\n            return this.ref_.getKey();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * Returns the number of children for this DataSnapshot.\r\n     * @return {number} The number of children that this DataSnapshot contains.\r\n     */\r\n    DataSnapshot.prototype.numChildren = function () {\r\n        util.validateArgCount('DataSnapshot.numChildren', 0, 0, arguments.length);\r\n        return this.node_.numChildren();\r\n    };\r\n    /**\r\n     * @return {Reference} The Firebase reference for the location this snapshot's data came from.\r\n     */\r\n    DataSnapshot.prototype.getRef = function () {\r\n        util.validateArgCount('DataSnapshot.ref', 0, 0, arguments.length);\r\n        return this.ref_;\r\n    };\r\n    Object.defineProperty(DataSnapshot.prototype, \"ref\", {\r\n        get: function () {\r\n            return this.getRef();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    return DataSnapshot;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Encapsulates the data needed to raise an event\r\n * @implements {Event}\r\n */\r\nvar DataEvent = /** @class */ (function () {\r\n    /**\r\n     * @param {!string} eventType One of: value, child_added, child_changed, child_moved, child_removed\r\n     * @param {!EventRegistration} eventRegistration The function to call to with the event data. User provided\r\n     * @param {!DataSnapshot} snapshot The data backing the event\r\n     * @param {?string=} prevName Optional, the name of the previous child for child_* events.\r\n     */\r\n    function DataEvent(eventType, eventRegistration, snapshot, prevName) {\r\n        this.eventType = eventType;\r\n        this.eventRegistration = eventRegistration;\r\n        this.snapshot = snapshot;\r\n        this.prevName = prevName;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    DataEvent.prototype.getPath = function () {\r\n        var ref = this.snapshot.getRef();\r\n        if (this.eventType === 'value') {\r\n            return ref.path;\r\n        }\r\n        else {\r\n            return ref.getParent().path;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    DataEvent.prototype.getEventType = function () {\r\n        return this.eventType;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    DataEvent.prototype.getEventRunner = function () {\r\n        return this.eventRegistration.getEventRunner(this);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    DataEvent.prototype.toString = function () {\r\n        return (this.getPath().toString() +\r\n            ':' +\r\n            this.eventType +\r\n            ':' +\r\n            util.stringify(this.snapshot.exportVal()));\r\n    };\r\n    return DataEvent;\r\n}());\r\nvar CancelEvent = /** @class */ (function () {\r\n    /**\r\n     * @param {EventRegistration} eventRegistration\r\n     * @param {Error} error\r\n     * @param {!Path} path\r\n     */\r\n    function CancelEvent(eventRegistration, error, path) {\r\n        this.eventRegistration = eventRegistration;\r\n        this.error = error;\r\n        this.path = path;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    CancelEvent.prototype.getPath = function () {\r\n        return this.path;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    CancelEvent.prototype.getEventType = function () {\r\n        return 'cancel';\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    CancelEvent.prototype.getEventRunner = function () {\r\n        return this.eventRegistration.getEventRunner(this);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    CancelEvent.prototype.toString = function () {\r\n        return this.path.toString() + ':cancel';\r\n    };\r\n    return CancelEvent;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Represents registration for 'value' events.\r\n */\r\nvar ValueEventRegistration = /** @class */ (function () {\r\n    /**\r\n     * @param {?function(!DataSnapshot)} callback_\r\n     * @param {?function(Error)} cancelCallback_\r\n     * @param {?Object} context_\r\n     */\r\n    function ValueEventRegistration(callback_, cancelCallback_, context_) {\r\n        this.callback_ = callback_;\r\n        this.cancelCallback_ = cancelCallback_;\r\n        this.context_ = context_;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueEventRegistration.prototype.respondsTo = function (eventType) {\r\n        return eventType === 'value';\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueEventRegistration.prototype.createEvent = function (change, query) {\r\n        var index = query.getQueryParams().getIndex();\r\n        return new DataEvent('value', this, new DataSnapshot(change.snapshotNode, query.getRef(), index));\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueEventRegistration.prototype.getEventRunner = function (eventData) {\r\n        var ctx = this.context_;\r\n        if (eventData.getEventType() === 'cancel') {\r\n            util.assert(this.cancelCallback_, 'Raising a cancel event on a listener with no cancel callback');\r\n            var cancelCB_1 = this.cancelCallback_;\r\n            return function () {\r\n                // We know that error exists, we checked above that this is a cancel event\r\n                cancelCB_1.call(ctx, eventData.error);\r\n            };\r\n        }\r\n        else {\r\n            var cb_1 = this.callback_;\r\n            return function () {\r\n                cb_1.call(ctx, eventData.snapshot);\r\n            };\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueEventRegistration.prototype.createCancelEvent = function (error, path) {\r\n        if (this.cancelCallback_) {\r\n            return new CancelEvent(this, error, path);\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueEventRegistration.prototype.matches = function (other) {\r\n        if (!(other instanceof ValueEventRegistration)) {\r\n            return false;\r\n        }\r\n        else if (!other.callback_ || !this.callback_) {\r\n            // If no callback specified, we consider it to match any callback.\r\n            return true;\r\n        }\r\n        else {\r\n            return (other.callback_ === this.callback_ && other.context_ === this.context_);\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ValueEventRegistration.prototype.hasAnyCallback = function () {\r\n        return this.callback_ !== null;\r\n    };\r\n    return ValueEventRegistration;\r\n}());\r\n/**\r\n * Represents the registration of 1 or more child_xxx events.\r\n *\r\n * Currently, it is always exactly 1 child_xxx event, but the idea is we might let you\r\n * register a group of callbacks together in the future.\r\n *\r\n * @constructor\r\n * @implements {EventRegistration}\r\n */\r\nvar ChildEventRegistration = /** @class */ (function () {\r\n    /**\r\n     * @param {?Object.<string, function(!DataSnapshot, ?string=)>} callbacks_\r\n     * @param {?function(Error)} cancelCallback_\r\n     * @param {Object=} context_\r\n     */\r\n    function ChildEventRegistration(callbacks_, cancelCallback_, context_) {\r\n        this.callbacks_ = callbacks_;\r\n        this.cancelCallback_ = cancelCallback_;\r\n        this.context_ = context_;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildEventRegistration.prototype.respondsTo = function (eventType) {\r\n        var eventToCheck = eventType === 'children_added' ? 'child_added' : eventType;\r\n        eventToCheck =\r\n            eventToCheck === 'children_removed' ? 'child_removed' : eventToCheck;\r\n        return util.contains(this.callbacks_, eventToCheck);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildEventRegistration.prototype.createCancelEvent = function (error, path) {\r\n        if (this.cancelCallback_) {\r\n            return new CancelEvent(this, error, path);\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildEventRegistration.prototype.createEvent = function (change, query) {\r\n        util.assert(change.childName != null, 'Child events should have a childName.');\r\n        var ref = query.getRef().child(/** @type {!string} */ (change.childName));\r\n        var index = query.getQueryParams().getIndex();\r\n        return new DataEvent(change.type, this, new DataSnapshot(change.snapshotNode, ref, index), change.prevName);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildEventRegistration.prototype.getEventRunner = function (eventData) {\r\n        var ctx = this.context_;\r\n        if (eventData.getEventType() === 'cancel') {\r\n            util.assert(this.cancelCallback_, 'Raising a cancel event on a listener with no cancel callback');\r\n            var cancelCB_2 = this.cancelCallback_;\r\n            return function () {\r\n                // We know that error exists, we checked above that this is a cancel event\r\n                cancelCB_2.call(ctx, eventData.error);\r\n            };\r\n        }\r\n        else {\r\n            var cb_2 = this.callbacks_[eventData.eventType];\r\n            return function () {\r\n                cb_2.call(ctx, eventData.snapshot, eventData.prevName);\r\n            };\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildEventRegistration.prototype.matches = function (other) {\r\n        if (other instanceof ChildEventRegistration) {\r\n            if (!this.callbacks_ || !other.callbacks_) {\r\n                return true;\r\n            }\r\n            else if (this.context_ === other.context_) {\r\n                var otherCount = util.getCount(other.callbacks_);\r\n                var thisCount = util.getCount(this.callbacks_);\r\n                if (otherCount === thisCount) {\r\n                    // If count is 1, do an exact match on eventType, if either is defined but null, it's a match.\r\n                    //  If event types don't match, not a match\r\n                    // If count is not 1, exact match across all\r\n                    if (otherCount === 1) {\r\n                        var otherKey /** @type {!string} */ = util.getAnyKey(other.callbacks_);\r\n                        var thisKey /** @type {!string} */ = util.getAnyKey(this.callbacks_);\r\n                        return (thisKey === otherKey &&\r\n                            (!other.callbacks_[otherKey] ||\r\n                                !this.callbacks_[thisKey] ||\r\n                                other.callbacks_[otherKey] === this.callbacks_[thisKey]));\r\n                    }\r\n                    else {\r\n                        // Exact match on each key.\r\n                        return util.every(this.callbacks_, function (eventType, cb) { return other.callbacks_[eventType] === cb; });\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        return false;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    ChildEventRegistration.prototype.hasAnyCallback = function () {\r\n        return this.callbacks_ !== null;\r\n    };\r\n    return ChildEventRegistration;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar __referenceConstructor;\r\n/**\r\n * A Query represents a filter to be applied to a firebase location.  This object purely represents the\r\n * query expression (and exposes our public API to build the query).  The actual query logic is in ViewBase.js.\r\n *\r\n * Since every Firebase reference is a query, Firebase inherits from this object.\r\n */\r\nvar Query = /** @class */ (function () {\r\n    function Query(repo, path, queryParams_, orderByCalled_) {\r\n        this.repo = repo;\r\n        this.path = path;\r\n        this.queryParams_ = queryParams_;\r\n        this.orderByCalled_ = orderByCalled_;\r\n    }\r\n    Object.defineProperty(Query, \"__referenceConstructor\", {\r\n        get: function () {\r\n            util.assert(__referenceConstructor, 'Reference.ts has not been loaded');\r\n            return __referenceConstructor;\r\n        },\r\n        set: function (val) {\r\n            __referenceConstructor = val;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * Validates start/end values for queries.\r\n     * @param {!QueryParams} params\r\n     * @private\r\n     */\r\n    Query.validateQueryEndpoints_ = function (params) {\r\n        var startNode = null;\r\n        var endNode = null;\r\n        if (params.hasStart()) {\r\n            startNode = params.getIndexStartValue();\r\n        }\r\n        if (params.hasEnd()) {\r\n            endNode = params.getIndexEndValue();\r\n        }\r\n        if (params.getIndex() === KEY_INDEX) {\r\n            var tooManyArgsError = 'Query: When ordering by key, you may only pass one argument to ' +\r\n                'startAt(), endAt(), or equalTo().';\r\n            var wrongArgTypeError = 'Query: When ordering by key, the argument passed to startAt(), endAt(),' +\r\n                'or equalTo() must be a string.';\r\n            if (params.hasStart()) {\r\n                var startName = params.getIndexStartName();\r\n                if (startName != MIN_NAME) {\r\n                    throw new Error(tooManyArgsError);\r\n                }\r\n                else if (typeof startNode !== 'string') {\r\n                    throw new Error(wrongArgTypeError);\r\n                }\r\n            }\r\n            if (params.hasEnd()) {\r\n                var endName = params.getIndexEndName();\r\n                if (endName != MAX_NAME) {\r\n                    throw new Error(tooManyArgsError);\r\n                }\r\n                else if (typeof endNode !== 'string') {\r\n                    throw new Error(wrongArgTypeError);\r\n                }\r\n            }\r\n        }\r\n        else if (params.getIndex() === PRIORITY_INDEX) {\r\n            if ((startNode != null && !isValidPriority(startNode)) ||\r\n                (endNode != null && !isValidPriority(endNode))) {\r\n                throw new Error('Query: When ordering by priority, the first argument passed to startAt(), ' +\r\n                    'endAt(), or equalTo() must be a valid priority value (null, a number, or a string).');\r\n            }\r\n        }\r\n        else {\r\n            util.assert(params.getIndex() instanceof PathIndex ||\r\n                params.getIndex() === VALUE_INDEX, 'unknown index type.');\r\n            if ((startNode != null && typeof startNode === 'object') ||\r\n                (endNode != null && typeof endNode === 'object')) {\r\n                throw new Error('Query: First argument passed to startAt(), endAt(), or equalTo() cannot be ' +\r\n                    'an object.');\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Validates that limit* has been called with the correct combination of parameters\r\n     * @param {!QueryParams} params\r\n     * @private\r\n     */\r\n    Query.validateLimit_ = function (params) {\r\n        if (params.hasStart() &&\r\n            params.hasEnd() &&\r\n            params.hasLimit() &&\r\n            !params.hasAnchoredLimit()) {\r\n            throw new Error(\"Query: Can't combine startAt(), endAt(), and limit(). Use limitToFirst() or limitToLast() instead.\");\r\n        }\r\n    };\r\n    /**\r\n     * Validates that no other order by call has been made\r\n     * @param {!string} fnName\r\n     * @private\r\n     */\r\n    Query.prototype.validateNoPreviousOrderByCall_ = function (fnName) {\r\n        if (this.orderByCalled_ === true) {\r\n            throw new Error(fnName + \": You can't combine multiple orderBy calls.\");\r\n        }\r\n    };\r\n    /**\r\n     * @return {!QueryParams}\r\n     */\r\n    Query.prototype.getQueryParams = function () {\r\n        return this.queryParams_;\r\n    };\r\n    /**\r\n     * @return {!Reference}\r\n     */\r\n    Query.prototype.getRef = function () {\r\n        util.validateArgCount('Query.ref', 0, 0, arguments.length);\r\n        // This is a slight hack. We cannot goog.require('fb.api.Firebase'), since Firebase requires fb.api.Query.\r\n        // However, we will always export 'Firebase' to the global namespace, so it's guaranteed to exist by the time this\r\n        // method gets called.\r\n        return new Query.__referenceConstructor(this.repo, this.path);\r\n    };\r\n    /**\r\n     * @param {!string} eventType\r\n     * @param {!function(DataSnapshot, string=)} callback\r\n     * @param {(function(Error)|Object)=} cancelCallbackOrContext\r\n     * @param {Object=} context\r\n     * @return {!function(DataSnapshot, string=)}\r\n     */\r\n    Query.prototype.on = function (eventType, callback, cancelCallbackOrContext, context) {\r\n        util.validateArgCount('Query.on', 2, 4, arguments.length);\r\n        validateEventType('Query.on', 1, eventType, false);\r\n        util.validateCallback('Query.on', 2, callback, false);\r\n        var ret = Query.getCancelAndContextArgs_('Query.on', cancelCallbackOrContext, context);\r\n        if (eventType === 'value') {\r\n            this.onValueEvent(callback, ret.cancel, ret.context);\r\n        }\r\n        else {\r\n            var callbacks = {};\r\n            callbacks[eventType] = callback;\r\n            this.onChildEvent(callbacks, ret.cancel, ret.context);\r\n        }\r\n        return callback;\r\n    };\r\n    /**\r\n     * @param {!function(!DataSnapshot)} callback\r\n     * @param {?function(Error)} cancelCallback\r\n     * @param {?Object} context\r\n     * @protected\r\n     */\r\n    Query.prototype.onValueEvent = function (callback, cancelCallback, context) {\r\n        var container = new ValueEventRegistration(callback, cancelCallback || null, context || null);\r\n        this.repo.addEventCallbackForQuery(this, container);\r\n    };\r\n    /**\r\n     * @param {!Object.<string, !function(!DataSnapshot, ?string)>} callbacks\r\n     * @param {?function(Error)} cancelCallback\r\n     * @param {?Object} context\r\n     * @protected\r\n     */\r\n    Query.prototype.onChildEvent = function (callbacks, cancelCallback, context) {\r\n        var container = new ChildEventRegistration(callbacks, cancelCallback, context);\r\n        this.repo.addEventCallbackForQuery(this, container);\r\n    };\r\n    /**\r\n     * @param {string=} eventType\r\n     * @param {(function(!DataSnapshot, ?string=))=} callback\r\n     * @param {Object=} context\r\n     */\r\n    Query.prototype.off = function (eventType, callback, context) {\r\n        util.validateArgCount('Query.off', 0, 3, arguments.length);\r\n        validateEventType('Query.off', 1, eventType, true);\r\n        util.validateCallback('Query.off', 2, callback, true);\r\n        util.validateContextObject('Query.off', 3, context, true);\r\n        var container = null;\r\n        var callbacks = null;\r\n        if (eventType === 'value') {\r\n            var valueCallback = callback || null;\r\n            container = new ValueEventRegistration(valueCallback, null, context || null);\r\n        }\r\n        else if (eventType) {\r\n            if (callback) {\r\n                callbacks = {};\r\n                callbacks[eventType] = callback;\r\n            }\r\n            container = new ChildEventRegistration(callbacks, null, context || null);\r\n        }\r\n        this.repo.removeEventCallbackForQuery(this, container);\r\n    };\r\n    /**\r\n     * Attaches a listener, waits for the first event, and then removes the listener\r\n     * @param {!string} eventType\r\n     * @param {!function(!DataSnapshot, string=)} userCallback\r\n     * @param cancelOrContext\r\n     * @param context\r\n     * @return {!firebase.Promise}\r\n     */\r\n    Query.prototype.once = function (eventType, userCallback, cancelOrContext, context) {\r\n        var _this = this;\r\n        util.validateArgCount('Query.once', 1, 4, arguments.length);\r\n        validateEventType('Query.once', 1, eventType, false);\r\n        util.validateCallback('Query.once', 2, userCallback, true);\r\n        var ret = Query.getCancelAndContextArgs_('Query.once', cancelOrContext, context);\r\n        // TODO: Implement this more efficiently (in particular, use 'get' wire protocol for 'value' event)\r\n        // TODO: consider actually wiring the callbacks into the promise. We cannot do this without a breaking change\r\n        // because the API currently expects callbacks will be called synchronously if the data is cached, but this is\r\n        // against the Promise specification.\r\n        var firstCall = true;\r\n        var deferred = new util.Deferred();\r\n        // A dummy error handler in case a user wasn't expecting promises\r\n        deferred.promise.catch(function () { });\r\n        var onceCallback = function (snapshot) {\r\n            // NOTE: Even though we unsubscribe, we may get called multiple times if a single action (e.g. set() with JSON)\r\n            // triggers multiple events (e.g. child_added or child_changed).\r\n            if (firstCall) {\r\n                firstCall = false;\r\n                _this.off(eventType, onceCallback);\r\n                if (userCallback) {\r\n                    userCallback.bind(ret.context)(snapshot);\r\n                }\r\n                deferred.resolve(snapshot);\r\n            }\r\n        };\r\n        this.on(eventType, onceCallback, \r\n        /*cancel=*/ function (err) {\r\n            _this.off(eventType, onceCallback);\r\n            if (ret.cancel)\r\n                ret.cancel.bind(ret.context)(err);\r\n            deferred.reject(err);\r\n        });\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * Set a limit and anchor it to the start of the window.\r\n     * @param {!number} limit\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.limitToFirst = function (limit) {\r\n        util.validateArgCount('Query.limitToFirst', 1, 1, arguments.length);\r\n        if (typeof limit !== 'number' ||\r\n            Math.floor(limit) !== limit ||\r\n            limit <= 0) {\r\n            throw new Error('Query.limitToFirst: First argument must be a positive integer.');\r\n        }\r\n        if (this.queryParams_.hasLimit()) {\r\n            throw new Error('Query.limitToFirst: Limit was already set (by another call to limit, ' +\r\n                'limitToFirst, or limitToLast).');\r\n        }\r\n        return new Query(this.repo, this.path, this.queryParams_.limitToFirst(limit), this.orderByCalled_);\r\n    };\r\n    /**\r\n     * Set a limit and anchor it to the end of the window.\r\n     * @param {!number} limit\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.limitToLast = function (limit) {\r\n        util.validateArgCount('Query.limitToLast', 1, 1, arguments.length);\r\n        if (typeof limit !== 'number' ||\r\n            Math.floor(limit) !== limit ||\r\n            limit <= 0) {\r\n            throw new Error('Query.limitToLast: First argument must be a positive integer.');\r\n        }\r\n        if (this.queryParams_.hasLimit()) {\r\n            throw new Error('Query.limitToLast: Limit was already set (by another call to limit, ' +\r\n                'limitToFirst, or limitToLast).');\r\n        }\r\n        return new Query(this.repo, this.path, this.queryParams_.limitToLast(limit), this.orderByCalled_);\r\n    };\r\n    /**\r\n     * Given a child path, return a new query ordered by the specified grandchild path.\r\n     * @param {!string} path\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.orderByChild = function (path) {\r\n        util.validateArgCount('Query.orderByChild', 1, 1, arguments.length);\r\n        if (path === '$key') {\r\n            throw new Error('Query.orderByChild: \"$key\" is invalid.  Use Query.orderByKey() instead.');\r\n        }\r\n        else if (path === '$priority') {\r\n            throw new Error('Query.orderByChild: \"$priority\" is invalid.  Use Query.orderByPriority() instead.');\r\n        }\r\n        else if (path === '$value') {\r\n            throw new Error('Query.orderByChild: \"$value\" is invalid.  Use Query.orderByValue() instead.');\r\n        }\r\n        validatePathString('Query.orderByChild', 1, path, false);\r\n        this.validateNoPreviousOrderByCall_('Query.orderByChild');\r\n        var parsedPath = new Path(path);\r\n        if (parsedPath.isEmpty()) {\r\n            throw new Error('Query.orderByChild: cannot pass in empty path.  Use Query.orderByValue() instead.');\r\n        }\r\n        var index = new PathIndex(parsedPath);\r\n        var newParams = this.queryParams_.orderBy(index);\r\n        Query.validateQueryEndpoints_(newParams);\r\n        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);\r\n    };\r\n    /**\r\n     * Return a new query ordered by the KeyIndex\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.orderByKey = function () {\r\n        util.validateArgCount('Query.orderByKey', 0, 0, arguments.length);\r\n        this.validateNoPreviousOrderByCall_('Query.orderByKey');\r\n        var newParams = this.queryParams_.orderBy(KEY_INDEX);\r\n        Query.validateQueryEndpoints_(newParams);\r\n        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);\r\n    };\r\n    /**\r\n     * Return a new query ordered by the PriorityIndex\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.orderByPriority = function () {\r\n        util.validateArgCount('Query.orderByPriority', 0, 0, arguments.length);\r\n        this.validateNoPreviousOrderByCall_('Query.orderByPriority');\r\n        var newParams = this.queryParams_.orderBy(PRIORITY_INDEX);\r\n        Query.validateQueryEndpoints_(newParams);\r\n        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);\r\n    };\r\n    /**\r\n     * Return a new query ordered by the ValueIndex\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.orderByValue = function () {\r\n        util.validateArgCount('Query.orderByValue', 0, 0, arguments.length);\r\n        this.validateNoPreviousOrderByCall_('Query.orderByValue');\r\n        var newParams = this.queryParams_.orderBy(VALUE_INDEX);\r\n        Query.validateQueryEndpoints_(newParams);\r\n        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);\r\n    };\r\n    /**\r\n     * @param {number|string|boolean|null} value\r\n     * @param {?string=} name\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.startAt = function (value, name) {\r\n        if (value === void 0) { value = null; }\r\n        util.validateArgCount('Query.startAt', 0, 2, arguments.length);\r\n        validateFirebaseDataArg('Query.startAt', 1, value, this.path, true);\r\n        validateKey('Query.startAt', 2, name, true);\r\n        var newParams = this.queryParams_.startAt(value, name);\r\n        Query.validateLimit_(newParams);\r\n        Query.validateQueryEndpoints_(newParams);\r\n        if (this.queryParams_.hasStart()) {\r\n            throw new Error('Query.startAt: Starting point was already set (by another call to startAt ' +\r\n                'or equalTo).');\r\n        }\r\n        // Calling with no params tells us to start at the beginning.\r\n        if (value === undefined) {\r\n            value = null;\r\n            name = null;\r\n        }\r\n        return new Query(this.repo, this.path, newParams, this.orderByCalled_);\r\n    };\r\n    /**\r\n     * @param {number|string|boolean|null} value\r\n     * @param {?string=} name\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.endAt = function (value, name) {\r\n        if (value === void 0) { value = null; }\r\n        util.validateArgCount('Query.endAt', 0, 2, arguments.length);\r\n        validateFirebaseDataArg('Query.endAt', 1, value, this.path, true);\r\n        validateKey('Query.endAt', 2, name, true);\r\n        var newParams = this.queryParams_.endAt(value, name);\r\n        Query.validateLimit_(newParams);\r\n        Query.validateQueryEndpoints_(newParams);\r\n        if (this.queryParams_.hasEnd()) {\r\n            throw new Error('Query.endAt: Ending point was already set (by another call to endAt or ' +\r\n                'equalTo).');\r\n        }\r\n        return new Query(this.repo, this.path, newParams, this.orderByCalled_);\r\n    };\r\n    /**\r\n     * Load the selection of children with exactly the specified value, and, optionally,\r\n     * the specified name.\r\n     * @param {number|string|boolean|null} value\r\n     * @param {string=} name\r\n     * @return {!Query}\r\n     */\r\n    Query.prototype.equalTo = function (value, name) {\r\n        util.validateArgCount('Query.equalTo', 1, 2, arguments.length);\r\n        validateFirebaseDataArg('Query.equalTo', 1, value, this.path, false);\r\n        validateKey('Query.equalTo', 2, name, true);\r\n        if (this.queryParams_.hasStart()) {\r\n            throw new Error('Query.equalTo: Starting point was already set (by another call to startAt or ' +\r\n                'equalTo).');\r\n        }\r\n        if (this.queryParams_.hasEnd()) {\r\n            throw new Error('Query.equalTo: Ending point was already set (by another call to endAt or ' +\r\n                'equalTo).');\r\n        }\r\n        return this.startAt(value, name).endAt(value, name);\r\n    };\r\n    /**\r\n     * @return {!string} URL for this location.\r\n     */\r\n    Query.prototype.toString = function () {\r\n        util.validateArgCount('Query.toString', 0, 0, arguments.length);\r\n        return this.repo.toString() + this.path.toUrlEncodedString();\r\n    };\r\n    // Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary\r\n    // for end-users.\r\n    Query.prototype.toJSON = function () {\r\n        // An optional spacer argument is unnecessary for a string.\r\n        util.validateArgCount('Query.toJSON', 0, 1, arguments.length);\r\n        return this.toString();\r\n    };\r\n    /**\r\n     * An object representation of the query parameters used by this Query.\r\n     * @return {!Object}\r\n     */\r\n    Query.prototype.queryObject = function () {\r\n        return this.queryParams_.getQueryObject();\r\n    };\r\n    /**\r\n     * @return {!string}\r\n     */\r\n    Query.prototype.queryIdentifier = function () {\r\n        var obj = this.queryObject();\r\n        var id = ObjectToUniqueKey(obj);\r\n        return id === '{}' ? 'default' : id;\r\n    };\r\n    /**\r\n     * Return true if this query and the provided query are equivalent; otherwise, return false.\r\n     * @param {Query} other\r\n     * @return {boolean}\r\n     */\r\n    Query.prototype.isEqual = function (other) {\r\n        util.validateArgCount('Query.isEqual', 1, 1, arguments.length);\r\n        if (!(other instanceof Query)) {\r\n            var error = 'Query.isEqual failed: First argument must be an instance of firebase.database.Query.';\r\n            throw new Error(error);\r\n        }\r\n        var sameRepo = this.repo === other.repo;\r\n        var samePath = this.path.equals(other.path);\r\n        var sameQueryIdentifier = this.queryIdentifier() === other.queryIdentifier();\r\n        return sameRepo && samePath && sameQueryIdentifier;\r\n    };\r\n    /**\r\n     * Helper used by .on and .once to extract the context and or cancel arguments.\r\n     * @param {!string} fnName The function name (on or once)\r\n     * @param {(function(Error)|Object)=} cancelOrContext\r\n     * @param {Object=} context\r\n     * @return {{cancel: ?function(Error), context: ?Object}}\r\n     * @private\r\n     */\r\n    Query.getCancelAndContextArgs_ = function (fnName, cancelOrContext, context) {\r\n        var ret = { cancel: null, context: null };\r\n        if (cancelOrContext && context) {\r\n            ret.cancel = cancelOrContext;\r\n            util.validateCallback(fnName, 3, ret.cancel, true);\r\n            ret.context = context;\r\n            util.validateContextObject(fnName, 4, ret.context, true);\r\n        }\r\n        else if (cancelOrContext) {\r\n            // we have either a cancel callback or a context.\r\n            if (typeof cancelOrContext === 'object' && cancelOrContext !== null) {\r\n                // it's a context!\r\n                ret.context = cancelOrContext;\r\n            }\r\n            else if (typeof cancelOrContext === 'function') {\r\n                ret.cancel = cancelOrContext;\r\n            }\r\n            else {\r\n                throw new Error(util.errorPrefix(fnName, 3, true) +\r\n                    ' must either be a cancel callback or a context object.');\r\n            }\r\n        }\r\n        return ret;\r\n    };\r\n    Object.defineProperty(Query.prototype, \"ref\", {\r\n        get: function () {\r\n            return this.getRef();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    return Query;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Implements a set with a count of elements.\r\n *\r\n * @template K, V\r\n */\r\nvar CountedSet = /** @class */ (function () {\r\n    function CountedSet() {\r\n        this.set = {};\r\n    }\r\n    /**\r\n     * @param {!K} item\r\n     * @param {V} val\r\n     */\r\n    CountedSet.prototype.add = function (item, val) {\r\n        this.set[item] = val !== null ? val : true;\r\n    };\r\n    /**\r\n     * @param {!K} key\r\n     * @return {boolean}\r\n     */\r\n    CountedSet.prototype.contains = function (key) {\r\n        return util.contains(this.set, key);\r\n    };\r\n    /**\r\n     * @param {!K} item\r\n     * @return {V}\r\n     */\r\n    CountedSet.prototype.get = function (item) {\r\n        return this.contains(item) ? this.set[item] : undefined;\r\n    };\r\n    /**\r\n     * @param {!K} item\r\n     */\r\n    CountedSet.prototype.remove = function (item) {\r\n        delete this.set[item];\r\n    };\r\n    /**\r\n     * Deletes everything in the set\r\n     */\r\n    CountedSet.prototype.clear = function () {\r\n        this.set = {};\r\n    };\r\n    /**\r\n     * True if there's nothing in the set\r\n     * @return {boolean}\r\n     */\r\n    CountedSet.prototype.isEmpty = function () {\r\n        return util.isEmpty(this.set);\r\n    };\r\n    /**\r\n     * @return {number} The number of items in the set\r\n     */\r\n    CountedSet.prototype.count = function () {\r\n        return util.getCount(this.set);\r\n    };\r\n    /**\r\n     * Run a function on each k,v pair in the set\r\n     * @param {function(K, V)} fn\r\n     */\r\n    CountedSet.prototype.each = function (fn) {\r\n        util.forEach(this.set, function (k, v) { return fn(k, v); });\r\n    };\r\n    /**\r\n     * Mostly for debugging\r\n     * @return {Array.<K>} The keys present in this CountedSet\r\n     */\r\n    CountedSet.prototype.keys = function () {\r\n        var keys = [];\r\n        util.forEach(this.set, function (k) {\r\n            keys.push(k);\r\n        });\r\n        return keys;\r\n    };\r\n    return CountedSet;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Helper class to store a sparse set of snapshots.\r\n *\r\n * @constructor\r\n */\r\nvar SparseSnapshotTree = /** @class */ (function () {\r\n    function SparseSnapshotTree() {\r\n        /**\r\n         * @private\r\n         * @type {Node}\r\n         */\r\n        this.value_ = null;\r\n        /**\r\n         * @private\r\n         * @type {CountedSet}\r\n         */\r\n        this.children_ = null;\r\n    }\r\n    /**\r\n     * Gets the node stored at the given path if one exists.\r\n     *\r\n     * @param {!Path} path Path to look up snapshot for.\r\n     * @return {?Node} The retrieved node, or null.\r\n     */\r\n    SparseSnapshotTree.prototype.find = function (path) {\r\n        if (this.value_ != null) {\r\n            return this.value_.getChild(path);\r\n        }\r\n        else if (!path.isEmpty() && this.children_ != null) {\r\n            var childKey = path.getFront();\r\n            path = path.popFront();\r\n            if (this.children_.contains(childKey)) {\r\n                var childTree = this.children_.get(childKey);\r\n                return childTree.find(path);\r\n            }\r\n            else {\r\n                return null;\r\n            }\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    };\r\n    /**\r\n     * Stores the given node at the specified path. If there is already a node\r\n     * at a shallower path, it merges the new data into that snapshot node.\r\n     *\r\n     * @param {!Path} path Path to look up snapshot for.\r\n     * @param {!Node} data The new data, or null.\r\n     */\r\n    SparseSnapshotTree.prototype.remember = function (path, data) {\r\n        if (path.isEmpty()) {\r\n            this.value_ = data;\r\n            this.children_ = null;\r\n        }\r\n        else if (this.value_ !== null) {\r\n            this.value_ = this.value_.updateChild(path, data);\r\n        }\r\n        else {\r\n            if (this.children_ == null) {\r\n                this.children_ = new CountedSet();\r\n            }\r\n            var childKey = path.getFront();\r\n            if (!this.children_.contains(childKey)) {\r\n                this.children_.add(childKey, new SparseSnapshotTree());\r\n            }\r\n            var child = this.children_.get(childKey);\r\n            path = path.popFront();\r\n            child.remember(path, data);\r\n        }\r\n    };\r\n    /**\r\n     * Purge the data at path from the cache.\r\n     *\r\n     * @param {!Path} path Path to look up snapshot for.\r\n     * @return {boolean} True if this node should now be removed.\r\n     */\r\n    SparseSnapshotTree.prototype.forget = function (path) {\r\n        if (path.isEmpty()) {\r\n            this.value_ = null;\r\n            this.children_ = null;\r\n            return true;\r\n        }\r\n        else {\r\n            if (this.value_ !== null) {\r\n                if (this.value_.isLeafNode()) {\r\n                    // We're trying to forget a node that doesn't exist\r\n                    return false;\r\n                }\r\n                else {\r\n                    var value = this.value_;\r\n                    this.value_ = null;\r\n                    var self_1 = this;\r\n                    value.forEachChild(PRIORITY_INDEX, function (key, tree) {\r\n                        self_1.remember(new Path(key), tree);\r\n                    });\r\n                    return this.forget(path);\r\n                }\r\n            }\r\n            else if (this.children_ !== null) {\r\n                var childKey = path.getFront();\r\n                path = path.popFront();\r\n                if (this.children_.contains(childKey)) {\r\n                    var safeToRemove = this.children_.get(childKey).forget(path);\r\n                    if (safeToRemove) {\r\n                        this.children_.remove(childKey);\r\n                    }\r\n                }\r\n                if (this.children_.isEmpty()) {\r\n                    this.children_ = null;\r\n                    return true;\r\n                }\r\n                else {\r\n                    return false;\r\n                }\r\n            }\r\n            else {\r\n                return true;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Recursively iterates through all of the stored tree and calls the\r\n     * callback on each one.\r\n     *\r\n     * @param {!Path} prefixPath Path to look up node for.\r\n     * @param {!Function} func The function to invoke for each tree.\r\n     */\r\n    SparseSnapshotTree.prototype.forEachTree = function (prefixPath, func) {\r\n        if (this.value_ !== null) {\r\n            func(prefixPath, this.value_);\r\n        }\r\n        else {\r\n            this.forEachChild(function (key, tree) {\r\n                var path = new Path(prefixPath.toString() + '/' + key);\r\n                tree.forEachTree(path, func);\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * Iterates through each immediate child and triggers the callback.\r\n     *\r\n     * @param {!Function} func The function to invoke for each child.\r\n     */\r\n    SparseSnapshotTree.prototype.forEachChild = function (func) {\r\n        if (this.children_ !== null) {\r\n            this.children_.each(function (key, tree) {\r\n                func(key, tree);\r\n            });\r\n        }\r\n    };\r\n    return SparseSnapshotTree;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Generate placeholders for deferred values.\r\n * @param {?Object} values\r\n * @return {!Object}\r\n */\r\nvar generateWithValues = function (values) {\r\n    values = values || {};\r\n    values['timestamp'] = values['timestamp'] || new Date().getTime();\r\n    return values;\r\n};\r\n/**\r\n * Value to use when firing local events. When writing server values, fire\r\n * local events with an approximate value, otherwise return value as-is.\r\n * @param {(Object|string|number|boolean)} value\r\n * @param {!Object} serverValues\r\n * @return {!(string|number|boolean)}\r\n */\r\nvar resolveDeferredValue = function (value, serverValues) {\r\n    if (!value || typeof value !== 'object') {\r\n        return value;\r\n    }\r\n    else {\r\n        util.assert('.sv' in value, 'Unexpected leaf node or priority contents');\r\n        return serverValues[value['.sv']];\r\n    }\r\n};\r\n/**\r\n * Recursively replace all deferred values and priorities in the tree with the\r\n * specified generated replacement values.\r\n * @param {!SparseSnapshotTree} tree\r\n * @param {!Object} serverValues\r\n * @return {!SparseSnapshotTree}\r\n */\r\nvar resolveDeferredValueTree = function (tree, serverValues) {\r\n    var resolvedTree = new SparseSnapshotTree();\r\n    tree.forEachTree(new Path(''), function (path, node) {\r\n        resolvedTree.remember(path, resolveDeferredValueSnapshot(node, serverValues));\r\n    });\r\n    return resolvedTree;\r\n};\r\n/**\r\n * Recursively replace all deferred values and priorities in the node with the\r\n * specified generated replacement values.  If there are no server values in the node,\r\n * it'll be returned as-is.\r\n * @param {!Node} node\r\n * @param {!Object} serverValues\r\n * @return {!Node}\r\n */\r\nvar resolveDeferredValueSnapshot = function (node, serverValues) {\r\n    var rawPri = node.getPriority().val();\r\n    var priority = resolveDeferredValue(rawPri, serverValues);\r\n    var newNode;\r\n    if (node.isLeafNode()) {\r\n        var leafNode = node;\r\n        var value = resolveDeferredValue(leafNode.getValue(), serverValues);\r\n        if (value !== leafNode.getValue() ||\r\n            priority !== leafNode.getPriority().val()) {\r\n            return new LeafNode(value, nodeFromJSON$1(priority));\r\n        }\r\n        else {\r\n            return node;\r\n        }\r\n    }\r\n    else {\r\n        var childrenNode = node;\r\n        newNode = childrenNode;\r\n        if (priority !== childrenNode.getPriority().val()) {\r\n            newNode = newNode.updatePriority(new LeafNode(priority));\r\n        }\r\n        childrenNode.forEachChild(PRIORITY_INDEX, function (childName, childNode) {\r\n            var newChildNode = resolveDeferredValueSnapshot(childNode, serverValues);\r\n            if (newChildNode !== childNode) {\r\n                newNode = newNode.updateImmediateChild(childName, newChildNode);\r\n            }\r\n        });\r\n        return newNode;\r\n    }\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n *\r\n * @enum\r\n */\r\nvar OperationType;\r\n(function (OperationType) {\r\n    OperationType[OperationType[\"OVERWRITE\"] = 0] = \"OVERWRITE\";\r\n    OperationType[OperationType[\"MERGE\"] = 1] = \"MERGE\";\r\n    OperationType[OperationType[\"ACK_USER_WRITE\"] = 2] = \"ACK_USER_WRITE\";\r\n    OperationType[OperationType[\"LISTEN_COMPLETE\"] = 3] = \"LISTEN_COMPLETE\";\r\n})(OperationType || (OperationType = {}));\r\n/**\r\n * @param {boolean} fromUser\r\n * @param {boolean} fromServer\r\n * @param {?string} queryId\r\n * @param {boolean} tagged\r\n * @constructor\r\n */\r\nvar OperationSource = /** @class */ (function () {\r\n    function OperationSource(fromUser, fromServer, queryId, tagged) {\r\n        this.fromUser = fromUser;\r\n        this.fromServer = fromServer;\r\n        this.queryId = queryId;\r\n        this.tagged = tagged;\r\n        util.assert(!tagged || fromServer, 'Tagged queries must be from server.');\r\n    }\r\n    /**\r\n     * @const\r\n     * @type {!OperationSource}\r\n     */\r\n    OperationSource.User = new OperationSource(\r\n    /*fromUser=*/ true, false, null, \r\n    /*tagged=*/ false);\r\n    /**\r\n     * @const\r\n     * @type {!OperationSource}\r\n     */\r\n    OperationSource.Server = new OperationSource(false, \r\n    /*fromServer=*/ true, null, \r\n    /*tagged=*/ false);\r\n    /**\r\n     * @param {string} queryId\r\n     * @return {!OperationSource}\r\n     */\r\n    OperationSource.forServerTaggedQuery = function (queryId) {\r\n        return new OperationSource(false, \r\n        /*fromServer=*/ true, queryId, \r\n        /*tagged=*/ true);\r\n    };\r\n    return OperationSource;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar AckUserWrite = /** @class */ (function () {\r\n    /**\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!ImmutableTree<!boolean>} affectedTree A tree containing true for each affected path. Affected paths can't overlap.\r\n     * @param {!boolean} revert\r\n     */\r\n    function AckUserWrite(\r\n    /**@inheritDoc */ path, \r\n    /**@inheritDoc */ affectedTree, \r\n    /**@inheritDoc */ revert) {\r\n        this.path = path;\r\n        this.affectedTree = affectedTree;\r\n        this.revert = revert;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.ACK_USER_WRITE;\r\n        /** @inheritDoc */\r\n        this.source = OperationSource.User;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    AckUserWrite.prototype.operationForChild = function (childName) {\r\n        if (!this.path.isEmpty()) {\r\n            util.assert(this.path.getFront() === childName, 'operationForChild called for unrelated child.');\r\n            return new AckUserWrite(this.path.popFront(), this.affectedTree, this.revert);\r\n        }\r\n        else if (this.affectedTree.value != null) {\r\n            util.assert(this.affectedTree.children.isEmpty(), 'affectedTree should not have overlapping affected paths.');\r\n            // All child locations are affected as well; just return same operation.\r\n            return this;\r\n        }\r\n        else {\r\n            var childTree = this.affectedTree.subtree(new Path(childName));\r\n            return new AckUserWrite(Path.Empty, childTree, this.revert);\r\n        }\r\n    };\r\n    return AckUserWrite;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar emptyChildrenSingleton;\r\n/**\r\n * Singleton empty children collection.\r\n *\r\n * @const\r\n * @type {!SortedMap.<string, !ImmutableTree.<?>>}\r\n */\r\nvar EmptyChildren = function () {\r\n    if (!emptyChildrenSingleton) {\r\n        emptyChildrenSingleton = new SortedMap(stringCompare);\r\n    }\r\n    return emptyChildrenSingleton;\r\n};\r\n/**\r\n * A tree with immutable elements.\r\n */\r\nvar ImmutableTree = /** @class */ (function () {\r\n    /**\r\n     * @template T\r\n     * @param {?T} value\r\n     * @param {SortedMap.<string, !ImmutableTree.<T>>=} children\r\n     */\r\n    function ImmutableTree(value, children) {\r\n        if (children === void 0) { children = EmptyChildren(); }\r\n        this.value = value;\r\n        this.children = children;\r\n    }\r\n    /**\r\n     * @template T\r\n     * @param {!Object.<string, !T>} obj\r\n     * @return {!ImmutableTree.<!T>}\r\n     */\r\n    ImmutableTree.fromObject = function (obj) {\r\n        var tree = ImmutableTree.Empty;\r\n        util.forEach(obj, function (childPath, childSnap) {\r\n            tree = tree.set(new Path(childPath), childSnap);\r\n        });\r\n        return tree;\r\n    };\r\n    /**\r\n     * True if the value is empty and there are no children\r\n     * @return {boolean}\r\n     */\r\n    ImmutableTree.prototype.isEmpty = function () {\r\n        return this.value === null && this.children.isEmpty();\r\n    };\r\n    /**\r\n     * Given a path and predicate, return the first node and the path to that node\r\n     * where the predicate returns true.\r\n     *\r\n     * TODO Do a perf test -- If we're creating a bunch of {path: value:} objects\r\n     * on the way back out, it may be better to pass down a pathSoFar obj.\r\n     *\r\n     * @param {!Path} relativePath The remainder of the path\r\n     * @param {function(T):boolean} predicate The predicate to satisfy to return a\r\n     *   node\r\n     * @return {?{path:!Path, value:!T}}\r\n     */\r\n    ImmutableTree.prototype.findRootMostMatchingPathAndValue = function (relativePath, predicate) {\r\n        if (this.value != null && predicate(this.value)) {\r\n            return { path: Path.Empty, value: this.value };\r\n        }\r\n        else {\r\n            if (relativePath.isEmpty()) {\r\n                return null;\r\n            }\r\n            else {\r\n                var front = relativePath.getFront();\r\n                var child = this.children.get(front);\r\n                if (child !== null) {\r\n                    var childExistingPathAndValue = child.findRootMostMatchingPathAndValue(relativePath.popFront(), predicate);\r\n                    if (childExistingPathAndValue != null) {\r\n                        var fullPath = new Path(front).child(childExistingPathAndValue.path);\r\n                        return { path: fullPath, value: childExistingPathAndValue.value };\r\n                    }\r\n                    else {\r\n                        return null;\r\n                    }\r\n                }\r\n                else {\r\n                    return null;\r\n                }\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Find, if it exists, the shortest subpath of the given path that points a defined\r\n     * value in the tree\r\n     * @param {!Path} relativePath\r\n     * @return {?{path: !Path, value: !T}}\r\n     */\r\n    ImmutableTree.prototype.findRootMostValueAndPath = function (relativePath) {\r\n        return this.findRootMostMatchingPathAndValue(relativePath, function () { return true; });\r\n    };\r\n    /**\r\n     * @param {!Path} relativePath\r\n     * @return {!ImmutableTree.<T>} The subtree at the given path\r\n     */\r\n    ImmutableTree.prototype.subtree = function (relativePath) {\r\n        if (relativePath.isEmpty()) {\r\n            return this;\r\n        }\r\n        else {\r\n            var front = relativePath.getFront();\r\n            var childTree = this.children.get(front);\r\n            if (childTree !== null) {\r\n                return childTree.subtree(relativePath.popFront());\r\n            }\r\n            else {\r\n                return ImmutableTree.Empty;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Sets a value at the specified path.\r\n     *\r\n     * @param {!Path} relativePath Path to set value at.\r\n     * @param {?T} toSet Value to set.\r\n     * @return {!ImmutableTree.<T>} Resulting tree.\r\n     */\r\n    ImmutableTree.prototype.set = function (relativePath, toSet) {\r\n        if (relativePath.isEmpty()) {\r\n            return new ImmutableTree(toSet, this.children);\r\n        }\r\n        else {\r\n            var front = relativePath.getFront();\r\n            var child = this.children.get(front) || ImmutableTree.Empty;\r\n            var newChild = child.set(relativePath.popFront(), toSet);\r\n            var newChildren = this.children.insert(front, newChild);\r\n            return new ImmutableTree(this.value, newChildren);\r\n        }\r\n    };\r\n    /**\r\n     * Removes the value at the specified path.\r\n     *\r\n     * @param {!Path} relativePath Path to value to remove.\r\n     * @return {!ImmutableTree.<T>} Resulting tree.\r\n     */\r\n    ImmutableTree.prototype.remove = function (relativePath) {\r\n        if (relativePath.isEmpty()) {\r\n            if (this.children.isEmpty()) {\r\n                return ImmutableTree.Empty;\r\n            }\r\n            else {\r\n                return new ImmutableTree(null, this.children);\r\n            }\r\n        }\r\n        else {\r\n            var front = relativePath.getFront();\r\n            var child = this.children.get(front);\r\n            if (child) {\r\n                var newChild = child.remove(relativePath.popFront());\r\n                var newChildren = void 0;\r\n                if (newChild.isEmpty()) {\r\n                    newChildren = this.children.remove(front);\r\n                }\r\n                else {\r\n                    newChildren = this.children.insert(front, newChild);\r\n                }\r\n                if (this.value === null && newChildren.isEmpty()) {\r\n                    return ImmutableTree.Empty;\r\n                }\r\n                else {\r\n                    return new ImmutableTree(this.value, newChildren);\r\n                }\r\n            }\r\n            else {\r\n                return this;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Gets a value from the tree.\r\n     *\r\n     * @param {!Path} relativePath Path to get value for.\r\n     * @return {?T} Value at path, or null.\r\n     */\r\n    ImmutableTree.prototype.get = function (relativePath) {\r\n        if (relativePath.isEmpty()) {\r\n            return this.value;\r\n        }\r\n        else {\r\n            var front = relativePath.getFront();\r\n            var child = this.children.get(front);\r\n            if (child) {\r\n                return child.get(relativePath.popFront());\r\n            }\r\n            else {\r\n                return null;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Replace the subtree at the specified path with the given new tree.\r\n     *\r\n     * @param {!Path} relativePath Path to replace subtree for.\r\n     * @param {!ImmutableTree} newTree New tree.\r\n     * @return {!ImmutableTree} Resulting tree.\r\n     */\r\n    ImmutableTree.prototype.setTree = function (relativePath, newTree) {\r\n        if (relativePath.isEmpty()) {\r\n            return newTree;\r\n        }\r\n        else {\r\n            var front = relativePath.getFront();\r\n            var child = this.children.get(front) || ImmutableTree.Empty;\r\n            var newChild = child.setTree(relativePath.popFront(), newTree);\r\n            var newChildren = void 0;\r\n            if (newChild.isEmpty()) {\r\n                newChildren = this.children.remove(front);\r\n            }\r\n            else {\r\n                newChildren = this.children.insert(front, newChild);\r\n            }\r\n            return new ImmutableTree(this.value, newChildren);\r\n        }\r\n    };\r\n    /**\r\n     * Performs a depth first fold on this tree. Transforms a tree into a single\r\n     * value, given a function that operates on the path to a node, an optional\r\n     * current value, and a map of child names to folded subtrees\r\n     * @template V\r\n     * @param {function(Path, ?T, Object.<string, V>):V} fn\r\n     * @return {V}\r\n     */\r\n    ImmutableTree.prototype.fold = function (fn) {\r\n        return this.fold_(Path.Empty, fn);\r\n    };\r\n    /**\r\n     * Recursive helper for public-facing fold() method\r\n     * @template V\r\n     * @param {!Path} pathSoFar\r\n     * @param {function(Path, ?T, Object.<string, V>):V} fn\r\n     * @return {V}\r\n     * @private\r\n     */\r\n    ImmutableTree.prototype.fold_ = function (pathSoFar, fn) {\r\n        var accum = {};\r\n        this.children.inorderTraversal(function (childKey, childTree) {\r\n            accum[childKey] = childTree.fold_(pathSoFar.child(childKey), fn);\r\n        });\r\n        return fn(pathSoFar, this.value, accum);\r\n    };\r\n    /**\r\n     * Find the first matching value on the given path. Return the result of applying f to it.\r\n     * @template V\r\n     * @param {!Path} path\r\n     * @param {!function(!Path, !T):?V} f\r\n     * @return {?V}\r\n     */\r\n    ImmutableTree.prototype.findOnPath = function (path, f) {\r\n        return this.findOnPath_(path, Path.Empty, f);\r\n    };\r\n    ImmutableTree.prototype.findOnPath_ = function (pathToFollow, pathSoFar, f) {\r\n        var result = this.value ? f(pathSoFar, this.value) : false;\r\n        if (result) {\r\n            return result;\r\n        }\r\n        else {\r\n            if (pathToFollow.isEmpty()) {\r\n                return null;\r\n            }\r\n            else {\r\n                var front = pathToFollow.getFront();\r\n                var nextChild = this.children.get(front);\r\n                if (nextChild) {\r\n                    return nextChild.findOnPath_(pathToFollow.popFront(), pathSoFar.child(front), f);\r\n                }\r\n                else {\r\n                    return null;\r\n                }\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!function(!Path, !T)} f\r\n     * @returns {!ImmutableTree.<T>}\r\n     */\r\n    ImmutableTree.prototype.foreachOnPath = function (path, f) {\r\n        return this.foreachOnPath_(path, Path.Empty, f);\r\n    };\r\n    ImmutableTree.prototype.foreachOnPath_ = function (pathToFollow, currentRelativePath, f) {\r\n        if (pathToFollow.isEmpty()) {\r\n            return this;\r\n        }\r\n        else {\r\n            if (this.value) {\r\n                f(currentRelativePath, this.value);\r\n            }\r\n            var front = pathToFollow.getFront();\r\n            var nextChild = this.children.get(front);\r\n            if (nextChild) {\r\n                return nextChild.foreachOnPath_(pathToFollow.popFront(), currentRelativePath.child(front), f);\r\n            }\r\n            else {\r\n                return ImmutableTree.Empty;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Calls the given function for each node in the tree that has a value.\r\n     *\r\n     * @param {function(!Path, !T)} f A function to be called with\r\n     *   the path from the root of the tree to a node, and the value at that node.\r\n     *   Called in depth-first order.\r\n     */\r\n    ImmutableTree.prototype.foreach = function (f) {\r\n        this.foreach_(Path.Empty, f);\r\n    };\r\n    ImmutableTree.prototype.foreach_ = function (currentRelativePath, f) {\r\n        this.children.inorderTraversal(function (childName, childTree) {\r\n            childTree.foreach_(currentRelativePath.child(childName), f);\r\n        });\r\n        if (this.value) {\r\n            f(currentRelativePath, this.value);\r\n        }\r\n    };\r\n    /**\r\n     *\r\n     * @param {function(string, !T)} f\r\n     */\r\n    ImmutableTree.prototype.foreachChild = function (f) {\r\n        this.children.inorderTraversal(function (childName, childTree) {\r\n            if (childTree.value) {\r\n                f(childName, childTree.value);\r\n            }\r\n        });\r\n    };\r\n    ImmutableTree.Empty = new ImmutableTree(null);\r\n    return ImmutableTree;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param {!OperationSource} source\r\n * @param {!Path} path\r\n * @constructor\r\n * @implements {Operation}\r\n */\r\nvar ListenComplete = /** @class */ (function () {\r\n    function ListenComplete(source, path) {\r\n        this.source = source;\r\n        this.path = path;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.LISTEN_COMPLETE;\r\n    }\r\n    ListenComplete.prototype.operationForChild = function (childName) {\r\n        if (this.path.isEmpty()) {\r\n            return new ListenComplete(this.source, Path.Empty);\r\n        }\r\n        else {\r\n            return new ListenComplete(this.source, this.path.popFront());\r\n        }\r\n    };\r\n    return ListenComplete;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param {!OperationSource} source\r\n * @param {!Path} path\r\n * @param {!Node} snap\r\n * @constructor\r\n * @implements {Operation}\r\n */\r\nvar Overwrite = /** @class */ (function () {\r\n    function Overwrite(source, path, snap) {\r\n        this.source = source;\r\n        this.path = path;\r\n        this.snap = snap;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.OVERWRITE;\r\n    }\r\n    Overwrite.prototype.operationForChild = function (childName) {\r\n        if (this.path.isEmpty()) {\r\n            return new Overwrite(this.source, Path.Empty, this.snap.getImmediateChild(childName));\r\n        }\r\n        else {\r\n            return new Overwrite(this.source, this.path.popFront(), this.snap);\r\n        }\r\n    };\r\n    return Overwrite;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param {!OperationSource} source\r\n * @param {!Path} path\r\n * @param {!ImmutableTree.<!Node>} children\r\n * @constructor\r\n * @implements {Operation}\r\n */\r\nvar Merge = /** @class */ (function () {\r\n    function Merge(\r\n    /**@inheritDoc */ source, \r\n    /**@inheritDoc */ path, \r\n    /**@inheritDoc */ children) {\r\n        this.source = source;\r\n        this.path = path;\r\n        this.children = children;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.MERGE;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    Merge.prototype.operationForChild = function (childName) {\r\n        if (this.path.isEmpty()) {\r\n            var childTree = this.children.subtree(new Path(childName));\r\n            if (childTree.isEmpty()) {\r\n                // This child is unaffected\r\n                return null;\r\n            }\r\n            else if (childTree.value) {\r\n                // We have a snapshot for the child in question.  This becomes an overwrite of the child.\r\n                return new Overwrite(this.source, Path.Empty, childTree.value);\r\n            }\r\n            else {\r\n                // This is a merge at a deeper level\r\n                return new Merge(this.source, Path.Empty, childTree);\r\n            }\r\n        }\r\n        else {\r\n            util.assert(this.path.getFront() === childName, \"Can't get a merge for a child not on the path of the operation\");\r\n            return new Merge(this.source, this.path.popFront(), this.children);\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    Merge.prototype.toString = function () {\r\n        return ('Operation(' +\r\n            this.path +\r\n            ': ' +\r\n            this.source.toString() +\r\n            ' merge: ' +\r\n            this.children.toString() +\r\n            ')');\r\n    };\r\n    return Merge;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A cache node only stores complete children. Additionally it holds a flag whether the node can be considered fully\r\n * initialized in the sense that we know at one point in time this represented a valid state of the world, e.g.\r\n * initialized with data from the server, or a complete overwrite by the client. The filtered flag also tracks\r\n * whether a node potentially had children removed due to a filter.\r\n */\r\nvar CacheNode = /** @class */ (function () {\r\n    /**\r\n     * @param {!Node} node_\r\n     * @param {boolean} fullyInitialized_\r\n     * @param {boolean} filtered_\r\n     */\r\n    function CacheNode(node_, fullyInitialized_, filtered_) {\r\n        this.node_ = node_;\r\n        this.fullyInitialized_ = fullyInitialized_;\r\n        this.filtered_ = filtered_;\r\n    }\r\n    /**\r\n     * Returns whether this node was fully initialized with either server data or a complete overwrite by the client\r\n     * @return {boolean}\r\n     */\r\n    CacheNode.prototype.isFullyInitialized = function () {\r\n        return this.fullyInitialized_;\r\n    };\r\n    /**\r\n     * Returns whether this node is potentially missing children due to a filter applied to the node\r\n     * @return {boolean}\r\n     */\r\n    CacheNode.prototype.isFiltered = function () {\r\n        return this.filtered_;\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @return {boolean}\r\n     */\r\n    CacheNode.prototype.isCompleteForPath = function (path) {\r\n        if (path.isEmpty()) {\r\n            return this.isFullyInitialized() && !this.filtered_;\r\n        }\r\n        var childKey = path.getFront();\r\n        return this.isCompleteForChild(childKey);\r\n    };\r\n    /**\r\n     * @param {!string} key\r\n     * @return {boolean}\r\n     */\r\n    CacheNode.prototype.isCompleteForChild = function (key) {\r\n        return ((this.isFullyInitialized() && !this.filtered_) || this.node_.hasChild(key));\r\n    };\r\n    /**\r\n     * @return {!Node}\r\n     */\r\n    CacheNode.prototype.getNode = function () {\r\n        return this.node_;\r\n    };\r\n    return CacheNode;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Stores the data we have cached for a view.\r\n *\r\n * serverSnap is the cached server data, eventSnap is the cached event data (server data plus any local writes).\r\n *\r\n * @constructor\r\n */\r\nvar ViewCache = /** @class */ (function () {\r\n    /**\r\n     *\r\n     * @param {!CacheNode} eventCache_\r\n     * @param {!CacheNode} serverCache_\r\n     */\r\n    function ViewCache(eventCache_, serverCache_) {\r\n        this.eventCache_ = eventCache_;\r\n        this.serverCache_ = serverCache_;\r\n    }\r\n    /**\r\n     * @param {!Node} eventSnap\r\n     * @param {boolean} complete\r\n     * @param {boolean} filtered\r\n     * @return {!ViewCache}\r\n     */\r\n    ViewCache.prototype.updateEventSnap = function (eventSnap, complete, filtered) {\r\n        return new ViewCache(new CacheNode(eventSnap, complete, filtered), this.serverCache_);\r\n    };\r\n    /**\r\n     * @param {!Node} serverSnap\r\n     * @param {boolean} complete\r\n     * @param {boolean} filtered\r\n     * @return {!ViewCache}\r\n     */\r\n    ViewCache.prototype.updateServerSnap = function (serverSnap, complete, filtered) {\r\n        return new ViewCache(this.eventCache_, new CacheNode(serverSnap, complete, filtered));\r\n    };\r\n    /**\r\n     * @return {!CacheNode}\r\n     */\r\n    ViewCache.prototype.getEventCache = function () {\r\n        return this.eventCache_;\r\n    };\r\n    /**\r\n     * @return {?Node}\r\n     */\r\n    ViewCache.prototype.getCompleteEventSnap = function () {\r\n        return this.eventCache_.isFullyInitialized()\r\n            ? this.eventCache_.getNode()\r\n            : null;\r\n    };\r\n    /**\r\n     * @return {!CacheNode}\r\n     */\r\n    ViewCache.prototype.getServerCache = function () {\r\n        return this.serverCache_;\r\n    };\r\n    /**\r\n     * @return {?Node}\r\n     */\r\n    ViewCache.prototype.getCompleteServerSnap = function () {\r\n        return this.serverCache_.isFullyInitialized()\r\n            ? this.serverCache_.getNode()\r\n            : null;\r\n    };\r\n    /**\r\n     * @const\r\n     * @type {ViewCache}\r\n     */\r\n    ViewCache.Empty = new ViewCache(new CacheNode(ChildrenNode.EMPTY_NODE, \r\n    /*fullyInitialized=*/ false, \r\n    /*filtered=*/ false), new CacheNode(ChildrenNode.EMPTY_NODE, \r\n    /*fullyInitialized=*/ false, \r\n    /*filtered=*/ false));\r\n    return ViewCache;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @constructor\r\n * @struct\r\n * @param {!string} type The event type\r\n * @param {!Node} snapshotNode The data\r\n * @param {string=} childName The name for this child, if it's a child event\r\n * @param {Node=} oldSnap Used for intermediate processing of child changed events\r\n * @param {string=} prevName The name for the previous child, if applicable\r\n */\r\nvar Change = /** @class */ (function () {\r\n    function Change(type, snapshotNode, childName, oldSnap, prevName) {\r\n        this.type = type;\r\n        this.snapshotNode = snapshotNode;\r\n        this.childName = childName;\r\n        this.oldSnap = oldSnap;\r\n        this.prevName = prevName;\r\n    }\r\n    /**\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */\r\n    Change.valueChange = function (snapshot) {\r\n        return new Change(Change.VALUE, snapshot);\r\n    };\r\n    /**\r\n     * @param {string} childKey\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */\r\n    Change.childAddedChange = function (childKey, snapshot) {\r\n        return new Change(Change.CHILD_ADDED, snapshot, childKey);\r\n    };\r\n    /**\r\n     * @param {string} childKey\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */\r\n    Change.childRemovedChange = function (childKey, snapshot) {\r\n        return new Change(Change.CHILD_REMOVED, snapshot, childKey);\r\n    };\r\n    /**\r\n     * @param {string} childKey\r\n     * @param {!Node} newSnapshot\r\n     * @param {!Node} oldSnapshot\r\n     * @return {!Change}\r\n     */\r\n    Change.childChangedChange = function (childKey, newSnapshot, oldSnapshot) {\r\n        return new Change(Change.CHILD_CHANGED, newSnapshot, childKey, oldSnapshot);\r\n    };\r\n    /**\r\n     * @param {string} childKey\r\n     * @param {!Node} snapshot\r\n     * @return {!Change}\r\n     */\r\n    Change.childMovedChange = function (childKey, snapshot) {\r\n        return new Change(Change.CHILD_MOVED, snapshot, childKey);\r\n    };\r\n    //event types\r\n    /** Event type for a child added */\r\n    Change.CHILD_ADDED = 'child_added';\r\n    /** Event type for a child removed */\r\n    Change.CHILD_REMOVED = 'child_removed';\r\n    /** Event type for a child changed */\r\n    Change.CHILD_CHANGED = 'child_changed';\r\n    /** Event type for a child moved */\r\n    Change.CHILD_MOVED = 'child_moved';\r\n    /** Event type for a value change */\r\n    Change.VALUE = 'value';\r\n    return Change;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Doesn't really filter nodes but applies an index to the node and keeps track of any changes\r\n *\r\n * @constructor\r\n * @implements {NodeFilter}\r\n * @param {!Index} index\r\n */\r\nvar IndexedFilter = /** @class */ (function () {\r\n    function IndexedFilter(index_) {\r\n        this.index_ = index_;\r\n    }\r\n    IndexedFilter.prototype.updateChild = function (snap, key, newChild, affectedPath, source, optChangeAccumulator) {\r\n        util.assert(snap.isIndexed(this.index_), 'A node must be indexed if only a child is updated');\r\n        var oldChild = snap.getImmediateChild(key);\r\n        // Check if anything actually changed.\r\n        if (oldChild.getChild(affectedPath).equals(newChild.getChild(affectedPath))) {\r\n            // There's an edge case where a child can enter or leave the view because affectedPath was set to null.\r\n            // In this case, affectedPath will appear null in both the old and new snapshots.  So we need\r\n            // to avoid treating these cases as \"nothing changed.\"\r\n            if (oldChild.isEmpty() == newChild.isEmpty()) {\r\n                // Nothing changed.\r\n                // This assert should be valid, but it's expensive (can dominate perf testing) so don't actually do it.\r\n                //assert(oldChild.equals(newChild), 'Old and new snapshots should be equal.');\r\n                return snap;\r\n            }\r\n        }\r\n        if (optChangeAccumulator != null) {\r\n            if (newChild.isEmpty()) {\r\n                if (snap.hasChild(key)) {\r\n                    optChangeAccumulator.trackChildChange(Change.childRemovedChange(key, oldChild));\r\n                }\r\n                else {\r\n                    util.assert(snap.isLeafNode(), 'A child remove without an old child only makes sense on a leaf node');\r\n                }\r\n            }\r\n            else if (oldChild.isEmpty()) {\r\n                optChangeAccumulator.trackChildChange(Change.childAddedChange(key, newChild));\r\n            }\r\n            else {\r\n                optChangeAccumulator.trackChildChange(Change.childChangedChange(key, newChild, oldChild));\r\n            }\r\n        }\r\n        if (snap.isLeafNode() && newChild.isEmpty()) {\r\n            return snap;\r\n        }\r\n        else {\r\n            // Make sure the node is indexed\r\n            return snap.updateImmediateChild(key, newChild).withIndex(this.index_);\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    IndexedFilter.prototype.updateFullNode = function (oldSnap, newSnap, optChangeAccumulator) {\r\n        if (optChangeAccumulator != null) {\r\n            if (!oldSnap.isLeafNode()) {\r\n                oldSnap.forEachChild(PRIORITY_INDEX, function (key, childNode) {\r\n                    if (!newSnap.hasChild(key)) {\r\n                        optChangeAccumulator.trackChildChange(Change.childRemovedChange(key, childNode));\r\n                    }\r\n                });\r\n            }\r\n            if (!newSnap.isLeafNode()) {\r\n                newSnap.forEachChild(PRIORITY_INDEX, function (key, childNode) {\r\n                    if (oldSnap.hasChild(key)) {\r\n                        var oldChild = oldSnap.getImmediateChild(key);\r\n                        if (!oldChild.equals(childNode)) {\r\n                            optChangeAccumulator.trackChildChange(Change.childChangedChange(key, childNode, oldChild));\r\n                        }\r\n                    }\r\n                    else {\r\n                        optChangeAccumulator.trackChildChange(Change.childAddedChange(key, childNode));\r\n                    }\r\n                });\r\n            }\r\n        }\r\n        return newSnap.withIndex(this.index_);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    IndexedFilter.prototype.updatePriority = function (oldSnap, newPriority) {\r\n        if (oldSnap.isEmpty()) {\r\n            return ChildrenNode.EMPTY_NODE;\r\n        }\r\n        else {\r\n            return oldSnap.updatePriority(newPriority);\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    IndexedFilter.prototype.filtersNodes = function () {\r\n        return false;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    IndexedFilter.prototype.getIndexedFilter = function () {\r\n        return this;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    IndexedFilter.prototype.getIndex = function () {\r\n        return this.index_;\r\n    };\r\n    return IndexedFilter;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @constructor\r\n */\r\nvar ChildChangeAccumulator = /** @class */ (function () {\r\n    function ChildChangeAccumulator() {\r\n        this.changeMap_ = {};\r\n    }\r\n    /**\r\n     * @param {!Change} change\r\n     */\r\n    ChildChangeAccumulator.prototype.trackChildChange = function (change) {\r\n        var type = change.type;\r\n        var childKey /** @type {!string} */ = change.childName;\r\n        util.assert(type == Change.CHILD_ADDED ||\r\n            type == Change.CHILD_CHANGED ||\r\n            type == Change.CHILD_REMOVED, 'Only child changes supported for tracking');\r\n        util.assert(childKey !== '.priority', 'Only non-priority child changes can be tracked.');\r\n        var oldChange = util.safeGet(this.changeMap_, childKey);\r\n        if (oldChange) {\r\n            var oldType = oldChange.type;\r\n            if (type == Change.CHILD_ADDED && oldType == Change.CHILD_REMOVED) {\r\n                this.changeMap_[childKey] = Change.childChangedChange(childKey, change.snapshotNode, oldChange.snapshotNode);\r\n            }\r\n            else if (type == Change.CHILD_REMOVED &&\r\n                oldType == Change.CHILD_ADDED) {\r\n                delete this.changeMap_[childKey];\r\n            }\r\n            else if (type == Change.CHILD_REMOVED &&\r\n                oldType == Change.CHILD_CHANGED) {\r\n                this.changeMap_[childKey] = Change.childRemovedChange(childKey, oldChange.oldSnap);\r\n            }\r\n            else if (type == Change.CHILD_CHANGED &&\r\n                oldType == Change.CHILD_ADDED) {\r\n                this.changeMap_[childKey] = Change.childAddedChange(childKey, change.snapshotNode);\r\n            }\r\n            else if (type == Change.CHILD_CHANGED &&\r\n                oldType == Change.CHILD_CHANGED) {\r\n                this.changeMap_[childKey] = Change.childChangedChange(childKey, change.snapshotNode, oldChange.oldSnap);\r\n            }\r\n            else {\r\n                throw util.assertionError('Illegal combination of changes: ' +\r\n                    change +\r\n                    ' occurred after ' +\r\n                    oldChange);\r\n            }\r\n        }\r\n        else {\r\n            this.changeMap_[childKey] = change;\r\n        }\r\n    };\r\n    /**\r\n     * @return {!Array.<!Change>}\r\n     */\r\n    ChildChangeAccumulator.prototype.getChanges = function () {\r\n        return util.getValues(this.changeMap_);\r\n    };\r\n    return ChildChangeAccumulator;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An implementation of CompleteChildSource that never returns any additional children\r\n *\r\n * @private\r\n * @constructor\r\n * @implements CompleteChildSource\r\n */\r\nvar NoCompleteChildSource_ = /** @class */ (function () {\r\n    function NoCompleteChildSource_() {\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    NoCompleteChildSource_.prototype.getCompleteChild = function (childKey) {\r\n        return null;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    NoCompleteChildSource_.prototype.getChildAfterChild = function (index, child, reverse) {\r\n        return null;\r\n    };\r\n    return NoCompleteChildSource_;\r\n}());\r\n/**\r\n * Singleton instance.\r\n * @const\r\n * @type {!CompleteChildSource}\r\n */\r\nvar NO_COMPLETE_CHILD_SOURCE = new NoCompleteChildSource_();\r\n/**\r\n * An implementation of CompleteChildSource that uses a WriteTree in addition to any other server data or\r\n * old event caches available to calculate complete children.\r\n *\r\n *\r\n * @implements CompleteChildSource\r\n */\r\nvar WriteTreeCompleteChildSource = /** @class */ (function () {\r\n    /**\r\n     * @param {!WriteTreeRef} writes_\r\n     * @param {!ViewCache} viewCache_\r\n     * @param {?Node} optCompleteServerCache_\r\n     */\r\n    function WriteTreeCompleteChildSource(writes_, viewCache_, optCompleteServerCache_) {\r\n        if (optCompleteServerCache_ === void 0) { optCompleteServerCache_ = null; }\r\n        this.writes_ = writes_;\r\n        this.viewCache_ = viewCache_;\r\n        this.optCompleteServerCache_ = optCompleteServerCache_;\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    WriteTreeCompleteChildSource.prototype.getCompleteChild = function (childKey) {\r\n        var node = this.viewCache_.getEventCache();\r\n        if (node.isCompleteForChild(childKey)) {\r\n            return node.getNode().getImmediateChild(childKey);\r\n        }\r\n        else {\r\n            var serverNode = this.optCompleteServerCache_ != null\r\n                ? new CacheNode(this.optCompleteServerCache_, true, false)\r\n                : this.viewCache_.getServerCache();\r\n            return this.writes_.calcCompleteChild(childKey, serverNode);\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    WriteTreeCompleteChildSource.prototype.getChildAfterChild = function (index, child, reverse) {\r\n        var completeServerData = this.optCompleteServerCache_ != null\r\n            ? this.optCompleteServerCache_\r\n            : this.viewCache_.getCompleteServerSnap();\r\n        var nodes = this.writes_.calcIndexedSlice(completeServerData, child, 1, reverse, index);\r\n        if (nodes.length === 0) {\r\n            return null;\r\n        }\r\n        else {\r\n            return nodes[0];\r\n        }\r\n    };\r\n    return WriteTreeCompleteChildSource;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @constructor\r\n * @struct\r\n */\r\nvar ProcessorResult = /** @class */ (function () {\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Array.<!Change>} changes\r\n     */\r\n    function ProcessorResult(viewCache, changes) {\r\n        this.viewCache = viewCache;\r\n        this.changes = changes;\r\n    }\r\n    return ProcessorResult;\r\n}());\r\n/**\r\n * @constructor\r\n */\r\nvar ViewProcessor = /** @class */ (function () {\r\n    /**\r\n     * @param {!NodeFilter} filter_\r\n     */\r\n    function ViewProcessor(filter_) {\r\n        this.filter_ = filter_;\r\n    }\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     */\r\n    ViewProcessor.prototype.assertIndexed = function (viewCache) {\r\n        util.assert(viewCache\r\n            .getEventCache()\r\n            .getNode()\r\n            .isIndexed(this.filter_.getIndex()), 'Event snap not indexed');\r\n        util.assert(viewCache\r\n            .getServerCache()\r\n            .getNode()\r\n            .isIndexed(this.filter_.getIndex()), 'Server snap not indexed');\r\n    };\r\n    /**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!Operation} operation\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @return {!ProcessorResult}\r\n     */\r\n    ViewProcessor.prototype.applyOperation = function (oldViewCache, operation, writesCache, completeCache) {\r\n        var accumulator = new ChildChangeAccumulator();\r\n        var newViewCache, filterServerNode;\r\n        if (operation.type === OperationType.OVERWRITE) {\r\n            var overwrite = operation;\r\n            if (overwrite.source.fromUser) {\r\n                newViewCache = this.applyUserOverwrite_(oldViewCache, overwrite.path, overwrite.snap, writesCache, completeCache, accumulator);\r\n            }\r\n            else {\r\n                util.assert(overwrite.source.fromServer, 'Unknown source.');\r\n                // We filter the node if it's a tagged update or the node has been previously filtered  and the\r\n                // update is not at the root in which case it is ok (and necessary) to mark the node unfiltered\r\n                // again\r\n                filterServerNode =\r\n                    overwrite.source.tagged ||\r\n                        (oldViewCache.getServerCache().isFiltered() &&\r\n                            !overwrite.path.isEmpty());\r\n                newViewCache = this.applyServerOverwrite_(oldViewCache, overwrite.path, overwrite.snap, writesCache, completeCache, filterServerNode, accumulator);\r\n            }\r\n        }\r\n        else if (operation.type === OperationType.MERGE) {\r\n            var merge = operation;\r\n            if (merge.source.fromUser) {\r\n                newViewCache = this.applyUserMerge_(oldViewCache, merge.path, merge.children, writesCache, completeCache, accumulator);\r\n            }\r\n            else {\r\n                util.assert(merge.source.fromServer, 'Unknown source.');\r\n                // We filter the node if it's a tagged update or the node has been previously filtered\r\n                filterServerNode =\r\n                    merge.source.tagged || oldViewCache.getServerCache().isFiltered();\r\n                newViewCache = this.applyServerMerge_(oldViewCache, merge.path, merge.children, writesCache, completeCache, filterServerNode, accumulator);\r\n            }\r\n        }\r\n        else if (operation.type === OperationType.ACK_USER_WRITE) {\r\n            var ackUserWrite = operation;\r\n            if (!ackUserWrite.revert) {\r\n                newViewCache = this.ackUserWrite_(oldViewCache, ackUserWrite.path, ackUserWrite.affectedTree, writesCache, completeCache, accumulator);\r\n            }\r\n            else {\r\n                newViewCache = this.revertUserWrite_(oldViewCache, ackUserWrite.path, writesCache, completeCache, accumulator);\r\n            }\r\n        }\r\n        else if (operation.type === OperationType.LISTEN_COMPLETE) {\r\n            newViewCache = this.listenComplete_(oldViewCache, operation.path, writesCache, accumulator);\r\n        }\r\n        else {\r\n            throw util.assertionError('Unknown operation type: ' + operation.type);\r\n        }\r\n        var changes = accumulator.getChanges();\r\n        ViewProcessor.maybeAddValueEvent_(oldViewCache, newViewCache, changes);\r\n        return new ProcessorResult(newViewCache, changes);\r\n    };\r\n    /**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!ViewCache} newViewCache\r\n     * @param {!Array.<!Change>} accumulator\r\n     * @private\r\n     */\r\n    ViewProcessor.maybeAddValueEvent_ = function (oldViewCache, newViewCache, accumulator) {\r\n        var eventSnap = newViewCache.getEventCache();\r\n        if (eventSnap.isFullyInitialized()) {\r\n            var isLeafOrEmpty = eventSnap.getNode().isLeafNode() || eventSnap.getNode().isEmpty();\r\n            var oldCompleteSnap = oldViewCache.getCompleteEventSnap();\r\n            if (accumulator.length > 0 ||\r\n                !oldViewCache.getEventCache().isFullyInitialized() ||\r\n                (isLeafOrEmpty &&\r\n                    !eventSnap\r\n                        .getNode()\r\n                        .equals(/** @type {!Node} */ (oldCompleteSnap))) ||\r\n                !eventSnap\r\n                    .getNode()\r\n                    .getPriority()\r\n                    .equals(oldCompleteSnap.getPriority())) {\r\n                accumulator.push(Change.valueChange(\r\n                /** @type {!Node} */ newViewCache.getCompleteEventSnap()));\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} changePath\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {!CompleteChildSource} source\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.generateEventCacheAfterServerEvent_ = function (viewCache, changePath, writesCache, source, accumulator) {\r\n        var oldEventSnap = viewCache.getEventCache();\r\n        if (writesCache.shadowingWrite(changePath) != null) {\r\n            // we have a shadowing write, ignore changes\r\n            return viewCache;\r\n        }\r\n        else {\r\n            var newEventCache = void 0, serverNode = void 0;\r\n            if (changePath.isEmpty()) {\r\n                // TODO: figure out how this plays with \"sliding ack windows\"\r\n                util.assert(viewCache.getServerCache().isFullyInitialized(), 'If change path is empty, we must have complete server data');\r\n                if (viewCache.getServerCache().isFiltered()) {\r\n                    // We need to special case this, because we need to only apply writes to complete children, or\r\n                    // we might end up raising events for incomplete children. If the server data is filtered deep\r\n                    // writes cannot be guaranteed to be complete\r\n                    var serverCache = viewCache.getCompleteServerSnap();\r\n                    var completeChildren = serverCache instanceof ChildrenNode\r\n                        ? serverCache\r\n                        : ChildrenNode.EMPTY_NODE;\r\n                    var completeEventChildren = writesCache.calcCompleteEventChildren(completeChildren);\r\n                    newEventCache = this.filter_.updateFullNode(viewCache.getEventCache().getNode(), completeEventChildren, accumulator);\r\n                }\r\n                else {\r\n                    var completeNode = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());\r\n                    newEventCache = this.filter_.updateFullNode(viewCache.getEventCache().getNode(), completeNode, accumulator);\r\n                }\r\n            }\r\n            else {\r\n                var childKey = changePath.getFront();\r\n                if (childKey == '.priority') {\r\n                    util.assert(changePath.getLength() == 1, \"Can't have a priority with additional path components\");\r\n                    var oldEventNode = oldEventSnap.getNode();\r\n                    serverNode = viewCache.getServerCache().getNode();\r\n                    // we might have overwrites for this priority\r\n                    var updatedPriority = writesCache.calcEventCacheAfterServerOverwrite(changePath, oldEventNode, serverNode);\r\n                    if (updatedPriority != null) {\r\n                        newEventCache = this.filter_.updatePriority(oldEventNode, updatedPriority);\r\n                    }\r\n                    else {\r\n                        // priority didn't change, keep old node\r\n                        newEventCache = oldEventSnap.getNode();\r\n                    }\r\n                }\r\n                else {\r\n                    var childChangePath = changePath.popFront();\r\n                    // update child\r\n                    var newEventChild = void 0;\r\n                    if (oldEventSnap.isCompleteForChild(childKey)) {\r\n                        serverNode = viewCache.getServerCache().getNode();\r\n                        var eventChildUpdate = writesCache.calcEventCacheAfterServerOverwrite(changePath, oldEventSnap.getNode(), serverNode);\r\n                        if (eventChildUpdate != null) {\r\n                            newEventChild = oldEventSnap\r\n                                .getNode()\r\n                                .getImmediateChild(childKey)\r\n                                .updateChild(childChangePath, eventChildUpdate);\r\n                        }\r\n                        else {\r\n                            // Nothing changed, just keep the old child\r\n                            newEventChild = oldEventSnap\r\n                                .getNode()\r\n                                .getImmediateChild(childKey);\r\n                        }\r\n                    }\r\n                    else {\r\n                        newEventChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());\r\n                    }\r\n                    if (newEventChild != null) {\r\n                        newEventCache = this.filter_.updateChild(oldEventSnap.getNode(), childKey, newEventChild, childChangePath, source, accumulator);\r\n                    }\r\n                    else {\r\n                        // no complete child available or no change\r\n                        newEventCache = oldEventSnap.getNode();\r\n                    }\r\n                }\r\n            }\r\n            return viewCache.updateEventSnap(newEventCache, oldEventSnap.isFullyInitialized() || changePath.isEmpty(), this.filter_.filtersNodes());\r\n        }\r\n    };\r\n    /**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!Path} changePath\r\n     * @param {!Node} changedSnap\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @param {boolean} filterServerNode\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.applyServerOverwrite_ = function (oldViewCache, changePath, changedSnap, writesCache, completeCache, filterServerNode, accumulator) {\r\n        var oldServerSnap = oldViewCache.getServerCache();\r\n        var newServerCache;\r\n        var serverFilter = filterServerNode\r\n            ? this.filter_\r\n            : this.filter_.getIndexedFilter();\r\n        if (changePath.isEmpty()) {\r\n            newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), changedSnap, null);\r\n        }\r\n        else if (serverFilter.filtersNodes() && !oldServerSnap.isFiltered()) {\r\n            // we want to filter the server node, but we didn't filter the server node yet, so simulate a full update\r\n            var newServerNode = oldServerSnap\r\n                .getNode()\r\n                .updateChild(changePath, changedSnap);\r\n            newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), newServerNode, null);\r\n        }\r\n        else {\r\n            var childKey = changePath.getFront();\r\n            if (!oldServerSnap.isCompleteForPath(changePath) &&\r\n                changePath.getLength() > 1) {\r\n                // We don't update incomplete nodes with updates intended for other listeners\r\n                return oldViewCache;\r\n            }\r\n            var childChangePath = changePath.popFront();\r\n            var childNode = oldServerSnap.getNode().getImmediateChild(childKey);\r\n            var newChildNode = childNode.updateChild(childChangePath, changedSnap);\r\n            if (childKey == '.priority') {\r\n                newServerCache = serverFilter.updatePriority(oldServerSnap.getNode(), newChildNode);\r\n            }\r\n            else {\r\n                newServerCache = serverFilter.updateChild(oldServerSnap.getNode(), childKey, newChildNode, childChangePath, NO_COMPLETE_CHILD_SOURCE, null);\r\n            }\r\n        }\r\n        var newViewCache = oldViewCache.updateServerSnap(newServerCache, oldServerSnap.isFullyInitialized() || changePath.isEmpty(), serverFilter.filtersNodes());\r\n        var source = new WriteTreeCompleteChildSource(writesCache, newViewCache, completeCache);\r\n        return this.generateEventCacheAfterServerEvent_(newViewCache, changePath, writesCache, source, accumulator);\r\n    };\r\n    /**\r\n     * @param {!ViewCache} oldViewCache\r\n     * @param {!Path} changePath\r\n     * @param {!Node} changedSnap\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.applyUserOverwrite_ = function (oldViewCache, changePath, changedSnap, writesCache, completeCache, accumulator) {\r\n        var oldEventSnap = oldViewCache.getEventCache();\r\n        var newViewCache, newEventCache;\r\n        var source = new WriteTreeCompleteChildSource(writesCache, oldViewCache, completeCache);\r\n        if (changePath.isEmpty()) {\r\n            newEventCache = this.filter_.updateFullNode(oldViewCache.getEventCache().getNode(), changedSnap, accumulator);\r\n            newViewCache = oldViewCache.updateEventSnap(newEventCache, true, this.filter_.filtersNodes());\r\n        }\r\n        else {\r\n            var childKey = changePath.getFront();\r\n            if (childKey === '.priority') {\r\n                newEventCache = this.filter_.updatePriority(oldViewCache.getEventCache().getNode(), changedSnap);\r\n                newViewCache = oldViewCache.updateEventSnap(newEventCache, oldEventSnap.isFullyInitialized(), oldEventSnap.isFiltered());\r\n            }\r\n            else {\r\n                var childChangePath = changePath.popFront();\r\n                var oldChild = oldEventSnap.getNode().getImmediateChild(childKey);\r\n                var newChild = void 0;\r\n                if (childChangePath.isEmpty()) {\r\n                    // Child overwrite, we can replace the child\r\n                    newChild = changedSnap;\r\n                }\r\n                else {\r\n                    var childNode = source.getCompleteChild(childKey);\r\n                    if (childNode != null) {\r\n                        if (childChangePath.getBack() === '.priority' &&\r\n                            childNode.getChild(childChangePath.parent()).isEmpty()) {\r\n                            // This is a priority update on an empty node. If this node exists on the server, the\r\n                            // server will send down the priority in the update, so ignore for now\r\n                            newChild = childNode;\r\n                        }\r\n                        else {\r\n                            newChild = childNode.updateChild(childChangePath, changedSnap);\r\n                        }\r\n                    }\r\n                    else {\r\n                        // There is no complete child node available\r\n                        newChild = ChildrenNode.EMPTY_NODE;\r\n                    }\r\n                }\r\n                if (!oldChild.equals(newChild)) {\r\n                    var newEventSnap = this.filter_.updateChild(oldEventSnap.getNode(), childKey, newChild, childChangePath, source, accumulator);\r\n                    newViewCache = oldViewCache.updateEventSnap(newEventSnap, oldEventSnap.isFullyInitialized(), this.filter_.filtersNodes());\r\n                }\r\n                else {\r\n                    newViewCache = oldViewCache;\r\n                }\r\n            }\r\n        }\r\n        return newViewCache;\r\n    };\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {string} childKey\r\n     * @return {boolean}\r\n     * @private\r\n     */\r\n    ViewProcessor.cacheHasChild_ = function (viewCache, childKey) {\r\n        return viewCache.getEventCache().isCompleteForChild(childKey);\r\n    };\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {ImmutableTree.<!Node>} changedChildren\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} serverCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.applyUserMerge_ = function (viewCache, path, changedChildren, writesCache, serverCache, accumulator) {\r\n        var _this = this;\r\n        // HACK: In the case of a limit query, there may be some changes that bump things out of the\r\n        // window leaving room for new items.  It's important we process these changes first, so we\r\n        // iterate the changes twice, first processing any that affect items currently in view.\r\n        // TODO: I consider an item \"in view\" if cacheHasChild is true, which checks both the server\r\n        // and event snap.  I'm not sure if this will result in edge cases when a child is in one but\r\n        // not the other.\r\n        var curViewCache = viewCache;\r\n        changedChildren.foreach(function (relativePath, childNode) {\r\n            var writePath = path.child(relativePath);\r\n            if (ViewProcessor.cacheHasChild_(viewCache, writePath.getFront())) {\r\n                curViewCache = _this.applyUserOverwrite_(curViewCache, writePath, childNode, writesCache, serverCache, accumulator);\r\n            }\r\n        });\r\n        changedChildren.foreach(function (relativePath, childNode) {\r\n            var writePath = path.child(relativePath);\r\n            if (!ViewProcessor.cacheHasChild_(viewCache, writePath.getFront())) {\r\n                curViewCache = _this.applyUserOverwrite_(curViewCache, writePath, childNode, writesCache, serverCache, accumulator);\r\n            }\r\n        });\r\n        return curViewCache;\r\n    };\r\n    /**\r\n     * @param {!Node} node\r\n     * @param {ImmutableTree.<!Node>} merge\r\n     * @return {!Node}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.applyMerge_ = function (node, merge) {\r\n        merge.foreach(function (relativePath, childNode) {\r\n            node = node.updateChild(relativePath, childNode);\r\n        });\r\n        return node;\r\n    };\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {!ImmutableTree.<!Node>} changedChildren\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} serverCache\r\n     * @param {boolean} filterServerNode\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.applyServerMerge_ = function (viewCache, path, changedChildren, writesCache, serverCache, filterServerNode, accumulator) {\r\n        var _this = this;\r\n        // If we don't have a cache yet, this merge was intended for a previously listen in the same location. Ignore it and\r\n        // wait for the complete data update coming soon.\r\n        if (viewCache\r\n            .getServerCache()\r\n            .getNode()\r\n            .isEmpty() &&\r\n            !viewCache.getServerCache().isFullyInitialized()) {\r\n            return viewCache;\r\n        }\r\n        // HACK: In the case of a limit query, there may be some changes that bump things out of the\r\n        // window leaving room for new items.  It's important we process these changes first, so we\r\n        // iterate the changes twice, first processing any that affect items currently in view.\r\n        // TODO: I consider an item \"in view\" if cacheHasChild is true, which checks both the server\r\n        // and event snap.  I'm not sure if this will result in edge cases when a child is in one but\r\n        // not the other.\r\n        var curViewCache = viewCache;\r\n        var viewMergeTree;\r\n        if (path.isEmpty()) {\r\n            viewMergeTree = changedChildren;\r\n        }\r\n        else {\r\n            viewMergeTree = ImmutableTree.Empty.setTree(path, changedChildren);\r\n        }\r\n        var serverNode = viewCache.getServerCache().getNode();\r\n        viewMergeTree.children.inorderTraversal(function (childKey, childTree) {\r\n            if (serverNode.hasChild(childKey)) {\r\n                var serverChild = viewCache\r\n                    .getServerCache()\r\n                    .getNode()\r\n                    .getImmediateChild(childKey);\r\n                var newChild = _this.applyMerge_(serverChild, childTree);\r\n                curViewCache = _this.applyServerOverwrite_(curViewCache, new Path(childKey), newChild, writesCache, serverCache, filterServerNode, accumulator);\r\n            }\r\n        });\r\n        viewMergeTree.children.inorderTraversal(function (childKey, childMergeTree) {\r\n            var isUnknownDeepMerge = !viewCache.getServerCache().isCompleteForChild(childKey) &&\r\n                childMergeTree.value == null;\r\n            if (!serverNode.hasChild(childKey) && !isUnknownDeepMerge) {\r\n                var serverChild = viewCache\r\n                    .getServerCache()\r\n                    .getNode()\r\n                    .getImmediateChild(childKey);\r\n                var newChild = _this.applyMerge_(serverChild, childMergeTree);\r\n                curViewCache = _this.applyServerOverwrite_(curViewCache, new Path(childKey), newChild, writesCache, serverCache, filterServerNode, accumulator);\r\n            }\r\n        });\r\n        return curViewCache;\r\n    };\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} ackPath\r\n     * @param {!ImmutableTree<!boolean>} affectedTree\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.ackUserWrite_ = function (viewCache, ackPath, affectedTree, writesCache, completeCache, accumulator) {\r\n        if (writesCache.shadowingWrite(ackPath) != null) {\r\n            return viewCache;\r\n        }\r\n        // Only filter server node if it is currently filtered\r\n        var filterServerNode = viewCache.getServerCache().isFiltered();\r\n        // Essentially we'll just get our existing server cache for the affected paths and re-apply it as a server update\r\n        // now that it won't be shadowed.\r\n        var serverCache = viewCache.getServerCache();\r\n        if (affectedTree.value != null) {\r\n            // This is an overwrite.\r\n            if ((ackPath.isEmpty() && serverCache.isFullyInitialized()) ||\r\n                serverCache.isCompleteForPath(ackPath)) {\r\n                return this.applyServerOverwrite_(viewCache, ackPath, serverCache.getNode().getChild(ackPath), writesCache, completeCache, filterServerNode, accumulator);\r\n            }\r\n            else if (ackPath.isEmpty()) {\r\n                // This is a goofy edge case where we are acking data at this location but don't have full data.  We\r\n                // should just re-apply whatever we have in our cache as a merge.\r\n                var changedChildren_1 = ImmutableTree.Empty;\r\n                serverCache.getNode().forEachChild(KEY_INDEX, function (name, node) {\r\n                    changedChildren_1 = changedChildren_1.set(new Path(name), node);\r\n                });\r\n                return this.applyServerMerge_(viewCache, ackPath, changedChildren_1, writesCache, completeCache, filterServerNode, accumulator);\r\n            }\r\n            else {\r\n                return viewCache;\r\n            }\r\n        }\r\n        else {\r\n            // This is a merge.\r\n            var changedChildren_2 = ImmutableTree.Empty;\r\n            affectedTree.foreach(function (mergePath, value) {\r\n                var serverCachePath = ackPath.child(mergePath);\r\n                if (serverCache.isCompleteForPath(serverCachePath)) {\r\n                    changedChildren_2 = changedChildren_2.set(mergePath, serverCache.getNode().getChild(serverCachePath));\r\n                }\r\n            });\r\n            return this.applyServerMerge_(viewCache, ackPath, changedChildren_2, writesCache, completeCache, filterServerNode, accumulator);\r\n        }\r\n    };\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.listenComplete_ = function (viewCache, path, writesCache, accumulator) {\r\n        var oldServerNode = viewCache.getServerCache();\r\n        var newViewCache = viewCache.updateServerSnap(oldServerNode.getNode(), oldServerNode.isFullyInitialized() || path.isEmpty(), oldServerNode.isFiltered());\r\n        return this.generateEventCacheAfterServerEvent_(newViewCache, path, writesCache, NO_COMPLETE_CHILD_SOURCE, accumulator);\r\n    };\r\n    /**\r\n     * @param {!ViewCache} viewCache\r\n     * @param {!Path} path\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeServerCache\r\n     * @param {!ChildChangeAccumulator} accumulator\r\n     * @return {!ViewCache}\r\n     * @private\r\n     */\r\n    ViewProcessor.prototype.revertUserWrite_ = function (viewCache, path, writesCache, completeServerCache, accumulator) {\r\n        var complete;\r\n        if (writesCache.shadowingWrite(path) != null) {\r\n            return viewCache;\r\n        }\r\n        else {\r\n            var source = new WriteTreeCompleteChildSource(writesCache, viewCache, completeServerCache);\r\n            var oldEventCache = viewCache.getEventCache().getNode();\r\n            var newEventCache = void 0;\r\n            if (path.isEmpty() || path.getFront() === '.priority') {\r\n                var newNode = void 0;\r\n                if (viewCache.getServerCache().isFullyInitialized()) {\r\n                    newNode = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());\r\n                }\r\n                else {\r\n                    var serverChildren = viewCache.getServerCache().getNode();\r\n                    util.assert(serverChildren instanceof ChildrenNode, 'serverChildren would be complete if leaf node');\r\n                    newNode = writesCache.calcCompleteEventChildren(serverChildren);\r\n                }\r\n                newNode = newNode;\r\n                newEventCache = this.filter_.updateFullNode(oldEventCache, newNode, accumulator);\r\n            }\r\n            else {\r\n                var childKey = path.getFront();\r\n                var newChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());\r\n                if (newChild == null &&\r\n                    viewCache.getServerCache().isCompleteForChild(childKey)) {\r\n                    newChild = oldEventCache.getImmediateChild(childKey);\r\n                }\r\n                if (newChild != null) {\r\n                    newEventCache = this.filter_.updateChild(oldEventCache, childKey, newChild, path.popFront(), source, accumulator);\r\n                }\r\n                else if (viewCache\r\n                    .getEventCache()\r\n                    .getNode()\r\n                    .hasChild(childKey)) {\r\n                    // No complete child available, delete the existing one, if any\r\n                    newEventCache = this.filter_.updateChild(oldEventCache, childKey, ChildrenNode.EMPTY_NODE, path.popFront(), source, accumulator);\r\n                }\r\n                else {\r\n                    newEventCache = oldEventCache;\r\n                }\r\n                if (newEventCache.isEmpty() &&\r\n                    viewCache.getServerCache().isFullyInitialized()) {\r\n                    // We might have reverted all child writes. Maybe the old event was a leaf node\r\n                    complete = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());\r\n                    if (complete.isLeafNode()) {\r\n                        newEventCache = this.filter_.updateFullNode(newEventCache, complete, accumulator);\r\n                    }\r\n                }\r\n            }\r\n            complete =\r\n                viewCache.getServerCache().isFullyInitialized() ||\r\n                    writesCache.shadowingWrite(Path.Empty) != null;\r\n            return viewCache.updateEventSnap(newEventCache, complete, this.filter_.filtersNodes());\r\n        }\r\n    };\r\n    return ViewProcessor;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An EventGenerator is used to convert \"raw\" changes (Change) as computed by the\r\n * CacheDiffer into actual events (Event) that can be raised.  See generateEventsForChanges()\r\n * for details.\r\n *\r\n * @constructor\r\n */\r\nvar EventGenerator = /** @class */ (function () {\r\n    /**\r\n     *\r\n     * @param {!Query} query_\r\n     */\r\n    function EventGenerator(query_) {\r\n        this.query_ = query_;\r\n        /**\r\n         * @private\r\n         * @type {!Index}\r\n         */\r\n        this.index_ = this.query_.getQueryParams().getIndex();\r\n    }\r\n    /**\r\n     * Given a set of raw changes (no moved events and prevName not specified yet), and a set of\r\n     * EventRegistrations that should be notified of these changes, generate the actual events to be raised.\r\n     *\r\n     * Notes:\r\n     *  - child_moved events will be synthesized at this time for any child_changed events that affect\r\n     *    our index.\r\n     *  - prevName will be calculated based on the index ordering.\r\n     *\r\n     * @param {!Array.<!Change>} changes\r\n     * @param {!Node} eventCache\r\n     * @param {!Array.<!EventRegistration>} eventRegistrations\r\n     * @return {!Array.<!Event>}\r\n     */\r\n    EventGenerator.prototype.generateEventsForChanges = function (changes, eventCache, eventRegistrations) {\r\n        var _this = this;\r\n        var events = [];\r\n        var moves = [];\r\n        changes.forEach(function (change) {\r\n            if (change.type === Change.CHILD_CHANGED &&\r\n                _this.index_.indexedValueChanged(change.oldSnap, change.snapshotNode)) {\r\n                moves.push(Change.childMovedChange(change.childName, change.snapshotNode));\r\n            }\r\n        });\r\n        this.generateEventsForType_(events, Change.CHILD_REMOVED, changes, eventRegistrations, eventCache);\r\n        this.generateEventsForType_(events, Change.CHILD_ADDED, changes, eventRegistrations, eventCache);\r\n        this.generateEventsForType_(events, Change.CHILD_MOVED, moves, eventRegistrations, eventCache);\r\n        this.generateEventsForType_(events, Change.CHILD_CHANGED, changes, eventRegistrations, eventCache);\r\n        this.generateEventsForType_(events, Change.VALUE, changes, eventRegistrations, eventCache);\r\n        return events;\r\n    };\r\n    /**\r\n     * Given changes of a single change type, generate the corresponding events.\r\n     *\r\n     * @param {!Array.<!Event>} events\r\n     * @param {!string} eventType\r\n     * @param {!Array.<!Change>} changes\r\n     * @param {!Array.<!EventRegistration>} registrations\r\n     * @param {!Node} eventCache\r\n     * @private\r\n     */\r\n    EventGenerator.prototype.generateEventsForType_ = function (events, eventType, changes, registrations, eventCache) {\r\n        var _this = this;\r\n        var filteredChanges = changes.filter(function (change) { return change.type === eventType; });\r\n        filteredChanges.sort(this.compareChanges_.bind(this));\r\n        filteredChanges.forEach(function (change) {\r\n            var materializedChange = _this.materializeSingleChange_(change, eventCache);\r\n            registrations.forEach(function (registration) {\r\n                if (registration.respondsTo(change.type)) {\r\n                    events.push(registration.createEvent(materializedChange, _this.query_));\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * @param {!Change} change\r\n     * @param {!Node} eventCache\r\n     * @return {!Change}\r\n     * @private\r\n     */\r\n    EventGenerator.prototype.materializeSingleChange_ = function (change, eventCache) {\r\n        if (change.type === 'value' || change.type === 'child_removed') {\r\n            return change;\r\n        }\r\n        else {\r\n            change.prevName = eventCache.getPredecessorChildName(\r\n            /** @type {!string} */\r\n            change.childName, change.snapshotNode, this.index_);\r\n            return change;\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Change} a\r\n     * @param {!Change} b\r\n     * @return {number}\r\n     * @private\r\n     */\r\n    EventGenerator.prototype.compareChanges_ = function (a, b) {\r\n        if (a.childName == null || b.childName == null) {\r\n            throw util.assertionError('Should only compare child_ events.');\r\n        }\r\n        var aWrapped = new NamedNode(a.childName, a.snapshotNode);\r\n        var bWrapped = new NamedNode(b.childName, b.snapshotNode);\r\n        return this.index_.compare(aWrapped, bWrapped);\r\n    };\r\n    return EventGenerator;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A view represents a specific location and query that has 1 or more event registrations.\r\n *\r\n * It does several things:\r\n *  - Maintains the list of event registrations for this location/query.\r\n *  - Maintains a cache of the data visible for this location/query.\r\n *  - Applies new operations (via applyOperation), updates the cache, and based on the event\r\n *    registrations returns the set of events to be raised.\r\n * @constructor\r\n */\r\nvar View = /** @class */ (function () {\r\n    /**\r\n     *\r\n     * @param {!Query} query_\r\n     * @param {!ViewCache} initialViewCache\r\n     */\r\n    function View(query_, initialViewCache) {\r\n        this.query_ = query_;\r\n        this.eventRegistrations_ = [];\r\n        var params = this.query_.getQueryParams();\r\n        var indexFilter = new IndexedFilter(params.getIndex());\r\n        var filter = params.getNodeFilter();\r\n        /**\r\n         * @type {ViewProcessor}\r\n         * @private\r\n         */\r\n        this.processor_ = new ViewProcessor(filter);\r\n        var initialServerCache = initialViewCache.getServerCache();\r\n        var initialEventCache = initialViewCache.getEventCache();\r\n        // Don't filter server node with other filter than index, wait for tagged listen\r\n        var serverSnap = indexFilter.updateFullNode(ChildrenNode.EMPTY_NODE, initialServerCache.getNode(), null);\r\n        var eventSnap = filter.updateFullNode(ChildrenNode.EMPTY_NODE, initialEventCache.getNode(), null);\r\n        var newServerCache = new CacheNode(serverSnap, initialServerCache.isFullyInitialized(), indexFilter.filtersNodes());\r\n        var newEventCache = new CacheNode(eventSnap, initialEventCache.isFullyInitialized(), filter.filtersNodes());\r\n        /**\r\n         * @type {!ViewCache}\r\n         * @private\r\n         */\r\n        this.viewCache_ = new ViewCache(newEventCache, newServerCache);\r\n        /**\r\n         * @type {!EventGenerator}\r\n         * @private\r\n         */\r\n        this.eventGenerator_ = new EventGenerator(this.query_);\r\n    }\r\n    /**\r\n     * @return {!Query}\r\n     */\r\n    View.prototype.getQuery = function () {\r\n        return this.query_;\r\n    };\r\n    /**\r\n     * @return {?Node}\r\n     */\r\n    View.prototype.getServerCache = function () {\r\n        return this.viewCache_.getServerCache().getNode();\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */\r\n    View.prototype.getCompleteServerCache = function (path) {\r\n        var cache = this.viewCache_.getCompleteServerSnap();\r\n        if (cache) {\r\n            // If this isn't a \"loadsAllData\" view, then cache isn't actually a complete cache and\r\n            // we need to see if it contains the child we're interested in.\r\n            if (this.query_.getQueryParams().loadsAllData() ||\r\n                (!path.isEmpty() && !cache.getImmediateChild(path.getFront()).isEmpty())) {\r\n                return cache.getChild(path);\r\n            }\r\n        }\r\n        return null;\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    View.prototype.isEmpty = function () {\r\n        return this.eventRegistrations_.length === 0;\r\n    };\r\n    /**\r\n     * @param {!EventRegistration} eventRegistration\r\n     */\r\n    View.prototype.addEventRegistration = function (eventRegistration) {\r\n        this.eventRegistrations_.push(eventRegistration);\r\n    };\r\n    /**\r\n     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.\r\n     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.\r\n     * @return {!Array.<!Event>} Cancel events, if cancelError was provided.\r\n     */\r\n    View.prototype.removeEventRegistration = function (eventRegistration, cancelError) {\r\n        var cancelEvents = [];\r\n        if (cancelError) {\r\n            util.assert(eventRegistration == null, 'A cancel should cancel all event registrations.');\r\n            var path_1 = this.query_.path;\r\n            this.eventRegistrations_.forEach(function (registration) {\r\n                cancelError /** @type {!Error} */ = cancelError;\r\n                var maybeEvent = registration.createCancelEvent(cancelError, path_1);\r\n                if (maybeEvent) {\r\n                    cancelEvents.push(maybeEvent);\r\n                }\r\n            });\r\n        }\r\n        if (eventRegistration) {\r\n            var remaining = [];\r\n            for (var i = 0; i < this.eventRegistrations_.length; ++i) {\r\n                var existing = this.eventRegistrations_[i];\r\n                if (!existing.matches(eventRegistration)) {\r\n                    remaining.push(existing);\r\n                }\r\n                else if (eventRegistration.hasAnyCallback()) {\r\n                    // We're removing just this one\r\n                    remaining = remaining.concat(this.eventRegistrations_.slice(i + 1));\r\n                    break;\r\n                }\r\n            }\r\n            this.eventRegistrations_ = remaining;\r\n        }\r\n        else {\r\n            this.eventRegistrations_ = [];\r\n        }\r\n        return cancelEvents;\r\n    };\r\n    /**\r\n     * Applies the given Operation, updates our cache, and returns the appropriate events.\r\n     *\r\n     * @param {!Operation} operation\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} completeServerCache\r\n     * @return {!Array.<!Event>}\r\n     */\r\n    View.prototype.applyOperation = function (operation, writesCache, completeServerCache) {\r\n        if (operation.type === OperationType.MERGE &&\r\n            operation.source.queryId !== null) {\r\n            util.assert(this.viewCache_.getCompleteServerSnap(), 'We should always have a full cache before handling merges');\r\n            util.assert(this.viewCache_.getCompleteEventSnap(), 'Missing event cache, even though we have a server cache');\r\n        }\r\n        var oldViewCache = this.viewCache_;\r\n        var result = this.processor_.applyOperation(oldViewCache, operation, writesCache, completeServerCache);\r\n        this.processor_.assertIndexed(result.viewCache);\r\n        util.assert(result.viewCache.getServerCache().isFullyInitialized() ||\r\n            !oldViewCache.getServerCache().isFullyInitialized(), 'Once a server snap is complete, it should never go back');\r\n        this.viewCache_ = result.viewCache;\r\n        return this.generateEventsForChanges_(result.changes, result.viewCache.getEventCache().getNode(), null);\r\n    };\r\n    /**\r\n     * @param {!EventRegistration} registration\r\n     * @return {!Array.<!Event>}\r\n     */\r\n    View.prototype.getInitialEvents = function (registration) {\r\n        var eventSnap = this.viewCache_.getEventCache();\r\n        var initialChanges = [];\r\n        if (!eventSnap.getNode().isLeafNode()) {\r\n            var eventNode = eventSnap.getNode();\r\n            eventNode.forEachChild(PRIORITY_INDEX, function (key, childNode) {\r\n                initialChanges.push(Change.childAddedChange(key, childNode));\r\n            });\r\n        }\r\n        if (eventSnap.isFullyInitialized()) {\r\n            initialChanges.push(Change.valueChange(eventSnap.getNode()));\r\n        }\r\n        return this.generateEventsForChanges_(initialChanges, eventSnap.getNode(), registration);\r\n    };\r\n    /**\r\n     * @private\r\n     * @param {!Array.<!Change>} changes\r\n     * @param {!Node} eventCache\r\n     * @param {EventRegistration=} eventRegistration\r\n     * @return {!Array.<!Event>}\r\n     */\r\n    View.prototype.generateEventsForChanges_ = function (changes, eventCache, eventRegistration) {\r\n        var registrations = eventRegistration\r\n            ? [eventRegistration]\r\n            : this.eventRegistrations_;\r\n        return this.eventGenerator_.generateEventsForChanges(changes, eventCache, registrations);\r\n    };\r\n    return View;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar __referenceConstructor$1;\r\n/**\r\n * SyncPoint represents a single location in a SyncTree with 1 or more event registrations, meaning we need to\r\n * maintain 1 or more Views at this location to cache server data and raise appropriate events for server changes\r\n * and user writes (set, transaction, update).\r\n *\r\n * It's responsible for:\r\n *  - Maintaining the set of 1 or more views necessary at this location (a SyncPoint with 0 views should be removed).\r\n *  - Proxying user / server operations to the views as appropriate (i.e. applyServerOverwrite,\r\n *    applyUserOverwrite, etc.)\r\n */\r\nvar SyncPoint = /** @class */ (function () {\r\n    function SyncPoint() {\r\n        /**\r\n         * The Views being tracked at this location in the tree, stored as a map where the key is a\r\n         * queryId and the value is the View for that query.\r\n         *\r\n         * NOTE: This list will be quite small (usually 1, but perhaps 2 or 3; any more is an odd use case).\r\n         *\r\n         * @type {!Object.<!string, !View>}\r\n         * @private\r\n         */\r\n        this.views_ = {};\r\n    }\r\n    Object.defineProperty(SyncPoint, \"__referenceConstructor\", {\r\n        get: function () {\r\n            util.assert(__referenceConstructor$1, 'Reference.ts has not been loaded');\r\n            return __referenceConstructor$1;\r\n        },\r\n        set: function (val) {\r\n            util.assert(!__referenceConstructor$1, '__referenceConstructor has already been defined');\r\n            __referenceConstructor$1 = val;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    SyncPoint.prototype.isEmpty = function () {\r\n        return util.isEmpty(this.views_);\r\n    };\r\n    /**\r\n     *\r\n     * @param {!Operation} operation\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} optCompleteServerCache\r\n     * @return {!Array.<!Event>}\r\n     */\r\n    SyncPoint.prototype.applyOperation = function (operation, writesCache, optCompleteServerCache) {\r\n        var queryId = operation.source.queryId;\r\n        if (queryId !== null) {\r\n            var view = util.safeGet(this.views_, queryId);\r\n            util.assert(view != null, 'SyncTree gave us an op for an invalid query.');\r\n            return view.applyOperation(operation, writesCache, optCompleteServerCache);\r\n        }\r\n        else {\r\n            var events_1 = [];\r\n            util.forEach(this.views_, function (key, view) {\r\n                events_1 = events_1.concat(view.applyOperation(operation, writesCache, optCompleteServerCache));\r\n            });\r\n            return events_1;\r\n        }\r\n    };\r\n    /**\r\n     * Add an event callback for the specified query.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {!EventRegistration} eventRegistration\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @param {?Node} serverCache Complete server cache, if we have it.\r\n     * @param {boolean} serverCacheComplete\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncPoint.prototype.addEventRegistration = function (query, eventRegistration, writesCache, serverCache, serverCacheComplete) {\r\n        var queryId = query.queryIdentifier();\r\n        var view = util.safeGet(this.views_, queryId);\r\n        if (!view) {\r\n            // TODO: make writesCache take flag for complete server node\r\n            var eventCache = writesCache.calcCompleteEventCache(serverCacheComplete ? serverCache : null);\r\n            var eventCacheComplete = false;\r\n            if (eventCache) {\r\n                eventCacheComplete = true;\r\n            }\r\n            else if (serverCache instanceof ChildrenNode) {\r\n                eventCache = writesCache.calcCompleteEventChildren(serverCache);\r\n                eventCacheComplete = false;\r\n            }\r\n            else {\r\n                eventCache = ChildrenNode.EMPTY_NODE;\r\n                eventCacheComplete = false;\r\n            }\r\n            var viewCache = new ViewCache(new CacheNode(\r\n            /** @type {!Node} */ (eventCache), eventCacheComplete, false), new CacheNode(\r\n            /** @type {!Node} */ (serverCache), serverCacheComplete, false));\r\n            view = new View(query, viewCache);\r\n            this.views_[queryId] = view;\r\n        }\r\n        // This is guaranteed to exist now, we just created anything that was missing\r\n        view.addEventRegistration(eventRegistration);\r\n        return view.getInitialEvents(eventRegistration);\r\n    };\r\n    /**\r\n     * Remove event callback(s).  Return cancelEvents if a cancelError is specified.\r\n     *\r\n     * If query is the default query, we'll check all views for the specified eventRegistration.\r\n     * If eventRegistration is null, we'll remove all callbacks for the specified view(s).\r\n     *\r\n     * @param {!Query} query\r\n     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.\r\n     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.\r\n     * @return {{removed:!Array.<!Query>, events:!Array.<!Event>}} removed queries and any cancel events\r\n     */\r\n    SyncPoint.prototype.removeEventRegistration = function (query, eventRegistration, cancelError) {\r\n        var queryId = query.queryIdentifier();\r\n        var removed = [];\r\n        var cancelEvents = [];\r\n        var hadCompleteView = this.hasCompleteView();\r\n        if (queryId === 'default') {\r\n            // When you do ref.off(...), we search all views for the registration to remove.\r\n            var self_1 = this;\r\n            util.forEach(this.views_, function (viewQueryId, view) {\r\n                cancelEvents = cancelEvents.concat(view.removeEventRegistration(eventRegistration, cancelError));\r\n                if (view.isEmpty()) {\r\n                    delete self_1.views_[viewQueryId];\r\n                    // We'll deal with complete views later.\r\n                    if (!view\r\n                        .getQuery()\r\n                        .getQueryParams()\r\n                        .loadsAllData()) {\r\n                        removed.push(view.getQuery());\r\n                    }\r\n                }\r\n            });\r\n        }\r\n        else {\r\n            // remove the callback from the specific view.\r\n            var view = util.safeGet(this.views_, queryId);\r\n            if (view) {\r\n                cancelEvents = cancelEvents.concat(view.removeEventRegistration(eventRegistration, cancelError));\r\n                if (view.isEmpty()) {\r\n                    delete this.views_[queryId];\r\n                    // We'll deal with complete views later.\r\n                    if (!view\r\n                        .getQuery()\r\n                        .getQueryParams()\r\n                        .loadsAllData()) {\r\n                        removed.push(view.getQuery());\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        if (hadCompleteView && !this.hasCompleteView()) {\r\n            // We removed our last complete view.\r\n            removed.push(new SyncPoint.__referenceConstructor(query.repo, query.path));\r\n        }\r\n        return { removed: removed, events: cancelEvents };\r\n    };\r\n    /**\r\n     * @return {!Array.<!View>}\r\n     */\r\n    SyncPoint.prototype.getQueryViews = function () {\r\n        var _this = this;\r\n        var values = Object.keys(this.views_).map(function (key) { return _this.views_[key]; });\r\n        return values.filter(function (view) {\r\n            return !view\r\n                .getQuery()\r\n                .getQueryParams()\r\n                .loadsAllData();\r\n        });\r\n    };\r\n    /**\r\n     *\r\n     * @param {!Path} path The path to the desired complete snapshot\r\n     * @return {?Node} A complete cache, if it exists\r\n     */\r\n    SyncPoint.prototype.getCompleteServerCache = function (path) {\r\n        var serverCache = null;\r\n        util.forEach(this.views_, function (key, view) {\r\n            serverCache = serverCache || view.getCompleteServerCache(path);\r\n        });\r\n        return serverCache;\r\n    };\r\n    /**\r\n     * @param {!Query} query\r\n     * @return {?View}\r\n     */\r\n    SyncPoint.prototype.viewForQuery = function (query) {\r\n        var params = query.getQueryParams();\r\n        if (params.loadsAllData()) {\r\n            return this.getCompleteView();\r\n        }\r\n        else {\r\n            var queryId = query.queryIdentifier();\r\n            return util.safeGet(this.views_, queryId);\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Query} query\r\n     * @return {boolean}\r\n     */\r\n    SyncPoint.prototype.viewExistsForQuery = function (query) {\r\n        return this.viewForQuery(query) != null;\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    SyncPoint.prototype.hasCompleteView = function () {\r\n        return this.getCompleteView() != null;\r\n    };\r\n    /**\r\n     * @return {?View}\r\n     */\r\n    SyncPoint.prototype.getCompleteView = function () {\r\n        var completeView = util.findValue(this.views_, function (view) {\r\n            return view\r\n                .getQuery()\r\n                .getQueryParams()\r\n                .loadsAllData();\r\n        });\r\n        return completeView || null;\r\n    };\r\n    return SyncPoint;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * This class holds a collection of writes that can be applied to nodes in unison. It abstracts away the logic with\r\n * dealing with priority writes and multiple nested writes. At any given path there is only allowed to be one write\r\n * modifying that path. Any write to an existing path or shadowing an existing path will modify that existing write\r\n * to reflect the write added.\r\n *\r\n * @constructor\r\n * @param {!ImmutableTree.<!Node>} writeTree\r\n */\r\nvar CompoundWrite = /** @class */ (function () {\r\n    function CompoundWrite(writeTree_) {\r\n        this.writeTree_ = writeTree_;\r\n    }\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {!Node} node\r\n     * @return {!CompoundWrite}\r\n     */\r\n    CompoundWrite.prototype.addWrite = function (path, node) {\r\n        if (path.isEmpty()) {\r\n            return new CompoundWrite(new ImmutableTree(node));\r\n        }\r\n        else {\r\n            var rootmost = this.writeTree_.findRootMostValueAndPath(path);\r\n            if (rootmost != null) {\r\n                var rootMostPath = rootmost.path;\r\n                var value = rootmost.value;\r\n                var relativePath = Path.relativePath(rootMostPath, path);\r\n                value = value.updateChild(relativePath, node);\r\n                return new CompoundWrite(this.writeTree_.set(rootMostPath, value));\r\n            }\r\n            else {\r\n                var subtree = new ImmutableTree(node);\r\n                var newWriteTree = this.writeTree_.setTree(path, subtree);\r\n                return new CompoundWrite(newWriteTree);\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} updates\r\n     * @return {!CompoundWrite}\r\n     */\r\n    CompoundWrite.prototype.addWrites = function (path, updates) {\r\n        var newWrite = this;\r\n        util.forEach(updates, function (childKey, node) {\r\n            newWrite = newWrite.addWrite(path.child(childKey), node);\r\n        });\r\n        return newWrite;\r\n    };\r\n    /**\r\n     * Will remove a write at the given path and deeper paths. This will <em>not</em> modify a write at a higher\r\n     * location, which must be removed by calling this method with that path.\r\n     *\r\n     * @param {!Path} path The path at which a write and all deeper writes should be removed\r\n     * @return {!CompoundWrite} The new CompoundWrite with the removed path\r\n     */\r\n    CompoundWrite.prototype.removeWrite = function (path) {\r\n        if (path.isEmpty()) {\r\n            return CompoundWrite.Empty;\r\n        }\r\n        else {\r\n            var newWriteTree = this.writeTree_.setTree(path, ImmutableTree.Empty);\r\n            return new CompoundWrite(newWriteTree);\r\n        }\r\n    };\r\n    /**\r\n     * Returns whether this CompoundWrite will fully overwrite a node at a given location and can therefore be\r\n     * considered \"complete\".\r\n     *\r\n     * @param {!Path} path The path to check for\r\n     * @return {boolean} Whether there is a complete write at that path\r\n     */\r\n    CompoundWrite.prototype.hasCompleteWrite = function (path) {\r\n        return this.getCompleteNode(path) != null;\r\n    };\r\n    /**\r\n     * Returns a node for a path if and only if the node is a \"complete\" overwrite at that path. This will not aggregate\r\n     * writes from deeper paths, but will return child nodes from a more shallow path.\r\n     *\r\n     * @param {!Path} path The path to get a complete write\r\n     * @return {?Node} The node if complete at that path, or null otherwise.\r\n     */\r\n    CompoundWrite.prototype.getCompleteNode = function (path) {\r\n        var rootmost = this.writeTree_.findRootMostValueAndPath(path);\r\n        if (rootmost != null) {\r\n            return this.writeTree_\r\n                .get(rootmost.path)\r\n                .getChild(Path.relativePath(rootmost.path, path));\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    };\r\n    /**\r\n     * Returns all children that are guaranteed to be a complete overwrite.\r\n     *\r\n     * @return {!Array.<NamedNode>} A list of all complete children.\r\n     */\r\n    CompoundWrite.prototype.getCompleteChildren = function () {\r\n        var children = [];\r\n        var node = this.writeTree_.value;\r\n        if (node != null) {\r\n            // If it's a leaf node, it has no children; so nothing to do.\r\n            if (!node.isLeafNode()) {\r\n                node.forEachChild(PRIORITY_INDEX, function (childName, childNode) {\r\n                    children.push(new NamedNode(childName, childNode));\r\n                });\r\n            }\r\n        }\r\n        else {\r\n            this.writeTree_.children.inorderTraversal(function (childName, childTree) {\r\n                if (childTree.value != null) {\r\n                    children.push(new NamedNode(childName, childTree.value));\r\n                }\r\n            });\r\n        }\r\n        return children;\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @return {!CompoundWrite}\r\n     */\r\n    CompoundWrite.prototype.childCompoundWrite = function (path) {\r\n        if (path.isEmpty()) {\r\n            return this;\r\n        }\r\n        else {\r\n            var shadowingNode = this.getCompleteNode(path);\r\n            if (shadowingNode != null) {\r\n                return new CompoundWrite(new ImmutableTree(shadowingNode));\r\n            }\r\n            else {\r\n                return new CompoundWrite(this.writeTree_.subtree(path));\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Returns true if this CompoundWrite is empty and therefore does not modify any nodes.\r\n     * @return {boolean} Whether this CompoundWrite is empty\r\n     */\r\n    CompoundWrite.prototype.isEmpty = function () {\r\n        return this.writeTree_.isEmpty();\r\n    };\r\n    /**\r\n     * Applies this CompoundWrite to a node. The node is returned with all writes from this CompoundWrite applied to the\r\n     * node\r\n     * @param {!Node} node The node to apply this CompoundWrite to\r\n     * @return {!Node} The node with all writes applied\r\n     */\r\n    CompoundWrite.prototype.apply = function (node) {\r\n        return CompoundWrite.applySubtreeWrite_(Path.Empty, this.writeTree_, node);\r\n    };\r\n    /**\r\n     * @type {!CompoundWrite}\r\n     */\r\n    CompoundWrite.Empty = new CompoundWrite(new ImmutableTree(null));\r\n    /**\r\n     * @param {!Path} relativePath\r\n     * @param {!ImmutableTree.<!Node>} writeTree\r\n     * @param {!Node} node\r\n     * @return {!Node}\r\n     * @private\r\n     */\r\n    CompoundWrite.applySubtreeWrite_ = function (relativePath, writeTree, node) {\r\n        if (writeTree.value != null) {\r\n            // Since there a write is always a leaf, we're done here\r\n            return node.updateChild(relativePath, writeTree.value);\r\n        }\r\n        else {\r\n            var priorityWrite_1 = null;\r\n            writeTree.children.inorderTraversal(function (childKey, childTree) {\r\n                if (childKey === '.priority') {\r\n                    // Apply priorities at the end so we don't update priorities for either empty nodes or forget\r\n                    // to apply priorities to empty nodes that are later filled\r\n                    util.assert(childTree.value !== null, 'Priority writes must always be leaf nodes');\r\n                    priorityWrite_1 = childTree.value;\r\n                }\r\n                else {\r\n                    node = CompoundWrite.applySubtreeWrite_(relativePath.child(childKey), childTree, node);\r\n                }\r\n            });\r\n            // If there was a priority write, we only apply it if the node is not empty\r\n            if (!node.getChild(relativePath).isEmpty() && priorityWrite_1 !== null) {\r\n                node = node.updateChild(relativePath.child('.priority'), priorityWrite_1);\r\n            }\r\n            return node;\r\n        }\r\n    };\r\n    return CompoundWrite;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * WriteTree tracks all pending user-initiated writes and has methods to calculate the result of merging them\r\n * with underlying server data (to create \"event cache\" data).  Pending writes are added with addOverwrite()\r\n * and addMerge(), and removed with removeWrite().\r\n *\r\n * @constructor\r\n */\r\nvar WriteTree = /** @class */ (function () {\r\n    function WriteTree() {\r\n        /**\r\n         * A tree tracking the result of applying all visible writes.  This does not include transactions with\r\n         * applyLocally=false or writes that are completely shadowed by other writes.\r\n         *\r\n         * @type {!CompoundWrite}\r\n         * @private\r\n         */\r\n        this.visibleWrites_ = CompoundWrite.Empty;\r\n        /**\r\n         * A list of all pending writes, regardless of visibility and shadowed-ness.  Used to calculate arbitrary\r\n         * sets of the changed data, such as hidden writes (from transactions) or changes with certain writes excluded (also\r\n         * used by transactions).\r\n         *\r\n         * @type {!Array.<!WriteRecord>}\r\n         * @private\r\n         */\r\n        this.allWrites_ = [];\r\n        this.lastWriteId_ = -1;\r\n    }\r\n    /**\r\n     * Create a new WriteTreeRef for the given path. For use with a new sync point at the given path.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {!WriteTreeRef}\r\n     */\r\n    WriteTree.prototype.childWrites = function (path) {\r\n        return new WriteTreeRef(path, this);\r\n    };\r\n    /**\r\n     * Record a new overwrite from user code.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} snap\r\n     * @param {!number} writeId\r\n     * @param {boolean=} visible This is set to false by some transactions. It should be excluded from event caches\r\n     */\r\n    WriteTree.prototype.addOverwrite = function (path, snap, writeId, visible) {\r\n        util.assert(writeId > this.lastWriteId_, 'Stacking an older write on top of newer ones');\r\n        if (visible === undefined) {\r\n            visible = true;\r\n        }\r\n        this.allWrites_.push({\r\n            path: path,\r\n            snap: snap,\r\n            writeId: writeId,\r\n            visible: visible\r\n        });\r\n        if (visible) {\r\n            this.visibleWrites_ = this.visibleWrites_.addWrite(path, snap);\r\n        }\r\n        this.lastWriteId_ = writeId;\r\n    };\r\n    /**\r\n     * Record a new merge from user code.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @param {!number} writeId\r\n     */\r\n    WriteTree.prototype.addMerge = function (path, changedChildren, writeId) {\r\n        util.assert(writeId > this.lastWriteId_, 'Stacking an older merge on top of newer ones');\r\n        this.allWrites_.push({\r\n            path: path,\r\n            children: changedChildren,\r\n            writeId: writeId,\r\n            visible: true\r\n        });\r\n        this.visibleWrites_ = this.visibleWrites_.addWrites(path, changedChildren);\r\n        this.lastWriteId_ = writeId;\r\n    };\r\n    /**\r\n     * @param {!number} writeId\r\n     * @return {?WriteRecord}\r\n     */\r\n    WriteTree.prototype.getWrite = function (writeId) {\r\n        for (var i = 0; i < this.allWrites_.length; i++) {\r\n            var record = this.allWrites_[i];\r\n            if (record.writeId === writeId) {\r\n                return record;\r\n            }\r\n        }\r\n        return null;\r\n    };\r\n    /**\r\n     * Remove a write (either an overwrite or merge) that has been successfully acknowledge by the server. Recalculates\r\n     * the tree if necessary.  We return true if it may have been visible, meaning views need to reevaluate.\r\n     *\r\n     * @param {!number} writeId\r\n     * @return {boolean} true if the write may have been visible (meaning we'll need to reevaluate / raise\r\n     * events as a result).\r\n     */\r\n    WriteTree.prototype.removeWrite = function (writeId) {\r\n        // Note: disabling this check. It could be a transaction that preempted another transaction, and thus was applied\r\n        // out of order.\r\n        //const validClear = revert || this.allWrites_.length === 0 || writeId <= this.allWrites_[0].writeId;\r\n        //assert(validClear, \"Either we don't have this write, or it's the first one in the queue\");\r\n        var _this = this;\r\n        var idx = this.allWrites_.findIndex(function (s) {\r\n            return s.writeId === writeId;\r\n        });\r\n        util.assert(idx >= 0, 'removeWrite called with nonexistent writeId.');\r\n        var writeToRemove = this.allWrites_[idx];\r\n        this.allWrites_.splice(idx, 1);\r\n        var removedWriteWasVisible = writeToRemove.visible;\r\n        var removedWriteOverlapsWithOtherWrites = false;\r\n        var i = this.allWrites_.length - 1;\r\n        while (removedWriteWasVisible && i >= 0) {\r\n            var currentWrite = this.allWrites_[i];\r\n            if (currentWrite.visible) {\r\n                if (i >= idx &&\r\n                    this.recordContainsPath_(currentWrite, writeToRemove.path)) {\r\n                    // The removed write was completely shadowed by a subsequent write.\r\n                    removedWriteWasVisible = false;\r\n                }\r\n                else if (writeToRemove.path.contains(currentWrite.path)) {\r\n                    // Either we're covering some writes or they're covering part of us (depending on which came first).\r\n                    removedWriteOverlapsWithOtherWrites = true;\r\n                }\r\n            }\r\n            i--;\r\n        }\r\n        if (!removedWriteWasVisible) {\r\n            return false;\r\n        }\r\n        else if (removedWriteOverlapsWithOtherWrites) {\r\n            // There's some shadowing going on. Just rebuild the visible writes from scratch.\r\n            this.resetTree_();\r\n            return true;\r\n        }\r\n        else {\r\n            // There's no shadowing.  We can safely just remove the write(s) from visibleWrites.\r\n            if (writeToRemove.snap) {\r\n                this.visibleWrites_ = this.visibleWrites_.removeWrite(writeToRemove.path);\r\n            }\r\n            else {\r\n                var children = writeToRemove.children;\r\n                util.forEach(children, function (childName) {\r\n                    _this.visibleWrites_ = _this.visibleWrites_.removeWrite(writeToRemove.path.child(childName));\r\n                });\r\n            }\r\n            return true;\r\n        }\r\n    };\r\n    /**\r\n     * Return a complete snapshot for the given path if there's visible write data at that path, else null.\r\n     * No server data is considered.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */\r\n    WriteTree.prototype.getCompleteWriteData = function (path) {\r\n        return this.visibleWrites_.getCompleteNode(path);\r\n    };\r\n    /**\r\n     * Given optional, underlying server data, and an optional set of constraints (exclude some sets, include hidden\r\n     * writes), attempt to calculate a complete snapshot for the given path\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {?Node} completeServerCache\r\n     * @param {Array.<number>=} writeIdsToExclude An optional set to be excluded\r\n     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false\r\n     * @return {?Node}\r\n     */\r\n    WriteTree.prototype.calcCompleteEventCache = function (treePath, completeServerCache, writeIdsToExclude, includeHiddenWrites) {\r\n        if (!writeIdsToExclude && !includeHiddenWrites) {\r\n            var shadowingNode = this.visibleWrites_.getCompleteNode(treePath);\r\n            if (shadowingNode != null) {\r\n                return shadowingNode;\r\n            }\r\n            else {\r\n                var subMerge = this.visibleWrites_.childCompoundWrite(treePath);\r\n                if (subMerge.isEmpty()) {\r\n                    return completeServerCache;\r\n                }\r\n                else if (completeServerCache == null &&\r\n                    !subMerge.hasCompleteWrite(Path.Empty)) {\r\n                    // We wouldn't have a complete snapshot, since there's no underlying data and no complete shadow\r\n                    return null;\r\n                }\r\n                else {\r\n                    var layeredCache = completeServerCache || ChildrenNode.EMPTY_NODE;\r\n                    return subMerge.apply(layeredCache);\r\n                }\r\n            }\r\n        }\r\n        else {\r\n            var merge = this.visibleWrites_.childCompoundWrite(treePath);\r\n            if (!includeHiddenWrites && merge.isEmpty()) {\r\n                return completeServerCache;\r\n            }\r\n            else {\r\n                // If the server cache is null, and we don't have a complete cache, we need to return null\r\n                if (!includeHiddenWrites &&\r\n                    completeServerCache == null &&\r\n                    !merge.hasCompleteWrite(Path.Empty)) {\r\n                    return null;\r\n                }\r\n                else {\r\n                    var filter = function (write) {\r\n                        return ((write.visible || includeHiddenWrites) &&\r\n                            (!writeIdsToExclude ||\r\n                                !~writeIdsToExclude.indexOf(write.writeId)) &&\r\n                            (write.path.contains(treePath) || treePath.contains(write.path)));\r\n                    };\r\n                    var mergeAtPath = WriteTree.layerTree_(this.allWrites_, filter, treePath);\r\n                    var layeredCache = completeServerCache || ChildrenNode.EMPTY_NODE;\r\n                    return mergeAtPath.apply(layeredCache);\r\n                }\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * With optional, underlying server data, attempt to return a children node of children that we have complete data for.\r\n     * Used when creating new views, to pre-fill their complete event children snapshot.\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {?ChildrenNode} completeServerChildren\r\n     * @return {!ChildrenNode}\r\n     */\r\n    WriteTree.prototype.calcCompleteEventChildren = function (treePath, completeServerChildren) {\r\n        var completeChildren = ChildrenNode.EMPTY_NODE;\r\n        var topLevelSet = this.visibleWrites_.getCompleteNode(treePath);\r\n        if (topLevelSet) {\r\n            if (!topLevelSet.isLeafNode()) {\r\n                // we're shadowing everything. Return the children.\r\n                topLevelSet.forEachChild(PRIORITY_INDEX, function (childName, childSnap) {\r\n                    completeChildren = completeChildren.updateImmediateChild(childName, childSnap);\r\n                });\r\n            }\r\n            return completeChildren;\r\n        }\r\n        else if (completeServerChildren) {\r\n            // Layer any children we have on top of this\r\n            // We know we don't have a top-level set, so just enumerate existing children\r\n            var merge_1 = this.visibleWrites_.childCompoundWrite(treePath);\r\n            completeServerChildren.forEachChild(PRIORITY_INDEX, function (childName, childNode) {\r\n                var node = merge_1\r\n                    .childCompoundWrite(new Path(childName))\r\n                    .apply(childNode);\r\n                completeChildren = completeChildren.updateImmediateChild(childName, node);\r\n            });\r\n            // Add any complete children we have from the set\r\n            merge_1.getCompleteChildren().forEach(function (namedNode) {\r\n                completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);\r\n            });\r\n            return completeChildren;\r\n        }\r\n        else {\r\n            // We don't have anything to layer on top of. Layer on any children we have\r\n            // Note that we can return an empty snap if we have a defined delete\r\n            var merge = this.visibleWrites_.childCompoundWrite(treePath);\r\n            merge.getCompleteChildren().forEach(function (namedNode) {\r\n                completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);\r\n            });\r\n            return completeChildren;\r\n        }\r\n    };\r\n    /**\r\n     * Given that the underlying server data has updated, determine what, if anything, needs to be\r\n     * applied to the event cache.\r\n     *\r\n     * Possibilities:\r\n     *\r\n     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data\r\n     *\r\n     * 2. Some write is completely shadowing. No events to be raised\r\n     *\r\n     * 3. Is partially shadowed. Events\r\n     *\r\n     * Either existingEventSnap or existingServerSnap must exist\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {!Path} childPath\r\n     * @param {?Node} existingEventSnap\r\n     * @param {?Node} existingServerSnap\r\n     * @return {?Node}\r\n     */\r\n    WriteTree.prototype.calcEventCacheAfterServerOverwrite = function (treePath, childPath, existingEventSnap, existingServerSnap) {\r\n        util.assert(existingEventSnap || existingServerSnap, 'Either existingEventSnap or existingServerSnap must exist');\r\n        var path = treePath.child(childPath);\r\n        if (this.visibleWrites_.hasCompleteWrite(path)) {\r\n            // At this point we can probably guarantee that we're in case 2, meaning no events\r\n            // May need to check visibility while doing the findRootMostValueAndPath call\r\n            return null;\r\n        }\r\n        else {\r\n            // No complete shadowing. We're either partially shadowing or not shadowing at all.\r\n            var childMerge = this.visibleWrites_.childCompoundWrite(path);\r\n            if (childMerge.isEmpty()) {\r\n                // We're not shadowing at all. Case 1\r\n                return existingServerSnap.getChild(childPath);\r\n            }\r\n            else {\r\n                // This could be more efficient if the serverNode + updates doesn't change the eventSnap\r\n                // However this is tricky to find out, since user updates don't necessary change the server\r\n                // snap, e.g. priority updates on empty nodes, or deep deletes. Another special case is if the server\r\n                // adds nodes, but doesn't change any existing writes. It is therefore not enough to\r\n                // only check if the updates change the serverNode.\r\n                // Maybe check if the merge tree contains these special cases and only do a full overwrite in that case?\r\n                return childMerge.apply(existingServerSnap.getChild(childPath));\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Returns a complete child for a given server snap after applying all user writes or null if there is no\r\n     * complete child for this ChildKey.\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {!string} childKey\r\n     * @param {!CacheNode} existingServerSnap\r\n     * @return {?Node}\r\n     */\r\n    WriteTree.prototype.calcCompleteChild = function (treePath, childKey, existingServerSnap) {\r\n        var path = treePath.child(childKey);\r\n        var shadowingNode = this.visibleWrites_.getCompleteNode(path);\r\n        if (shadowingNode != null) {\r\n            return shadowingNode;\r\n        }\r\n        else {\r\n            if (existingServerSnap.isCompleteForChild(childKey)) {\r\n                var childMerge = this.visibleWrites_.childCompoundWrite(path);\r\n                return childMerge.apply(existingServerSnap.getNode().getImmediateChild(childKey));\r\n            }\r\n            else {\r\n                return null;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at\r\n     * a higher path, this will return the child of that write relative to the write and this path.\r\n     * Returns null if there is no write at this path.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */\r\n    WriteTree.prototype.shadowingWrite = function (path) {\r\n        return this.visibleWrites_.getCompleteNode(path);\r\n    };\r\n    /**\r\n     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside\r\n     * the window, but may now be in the window.\r\n     *\r\n     * @param {!Path} treePath\r\n     * @param {?Node} completeServerData\r\n     * @param {!NamedNode} startPost\r\n     * @param {!number} count\r\n     * @param {boolean} reverse\r\n     * @param {!Index} index\r\n     * @return {!Array.<!NamedNode>}\r\n     */\r\n    WriteTree.prototype.calcIndexedSlice = function (treePath, completeServerData, startPost, count, reverse, index) {\r\n        var toIterate;\r\n        var merge = this.visibleWrites_.childCompoundWrite(treePath);\r\n        var shadowingNode = merge.getCompleteNode(Path.Empty);\r\n        if (shadowingNode != null) {\r\n            toIterate = shadowingNode;\r\n        }\r\n        else if (completeServerData != null) {\r\n            toIterate = merge.apply(completeServerData);\r\n        }\r\n        else {\r\n            // no children to iterate on\r\n            return [];\r\n        }\r\n        toIterate = toIterate.withIndex(index);\r\n        if (!toIterate.isEmpty() && !toIterate.isLeafNode()) {\r\n            var nodes = [];\r\n            var cmp = index.getCompare();\r\n            var iter = reverse\r\n                ? toIterate.getReverseIteratorFrom(startPost, index)\r\n                : toIterate.getIteratorFrom(startPost, index);\r\n            var next = iter.getNext();\r\n            while (next && nodes.length < count) {\r\n                if (cmp(next, startPost) !== 0) {\r\n                    nodes.push(next);\r\n                }\r\n                next = iter.getNext();\r\n            }\r\n            return nodes;\r\n        }\r\n        else {\r\n            return [];\r\n        }\r\n    };\r\n    /**\r\n     * @param {!WriteRecord} writeRecord\r\n     * @param {!Path} path\r\n     * @return {boolean}\r\n     * @private\r\n     */\r\n    WriteTree.prototype.recordContainsPath_ = function (writeRecord, path) {\r\n        if (writeRecord.snap) {\r\n            return writeRecord.path.contains(path);\r\n        }\r\n        else {\r\n            // findKey can return undefined, so use !! to coerce to boolean\r\n            return !!util.findKey(writeRecord.children, function (childSnap, childName) {\r\n                return writeRecord.path.child(childName).contains(path);\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * Re-layer the writes and merges into a tree so we can efficiently calculate event snapshots\r\n     * @private\r\n     */\r\n    WriteTree.prototype.resetTree_ = function () {\r\n        this.visibleWrites_ = WriteTree.layerTree_(this.allWrites_, WriteTree.DefaultFilter_, Path.Empty);\r\n        if (this.allWrites_.length > 0) {\r\n            this.lastWriteId_ = this.allWrites_[this.allWrites_.length - 1].writeId;\r\n        }\r\n        else {\r\n            this.lastWriteId_ = -1;\r\n        }\r\n    };\r\n    /**\r\n     * The default filter used when constructing the tree. Keep everything that's visible.\r\n     *\r\n     * @param {!WriteRecord} write\r\n     * @return {boolean}\r\n     * @private\r\n     */\r\n    WriteTree.DefaultFilter_ = function (write) {\r\n        return write.visible;\r\n    };\r\n    /**\r\n     * Static method. Given an array of WriteRecords, a filter for which ones to include, and a path, construct the tree of\r\n     * event data at that path.\r\n     *\r\n     * @param {!Array.<!WriteRecord>} writes\r\n     * @param {!function(!WriteRecord):boolean} filter\r\n     * @param {!Path} treeRoot\r\n     * @return {!CompoundWrite}\r\n     * @private\r\n     */\r\n    WriteTree.layerTree_ = function (writes, filter, treeRoot) {\r\n        var compoundWrite = CompoundWrite.Empty;\r\n        for (var i = 0; i < writes.length; ++i) {\r\n            var write = writes[i];\r\n            // Theory, a later set will either:\r\n            // a) abort a relevant transaction, so no need to worry about excluding it from calculating that transaction\r\n            // b) not be relevant to a transaction (separate branch), so again will not affect the data for that transaction\r\n            if (filter(write)) {\r\n                var writePath = write.path;\r\n                var relativePath = void 0;\r\n                if (write.snap) {\r\n                    if (treeRoot.contains(writePath)) {\r\n                        relativePath = Path.relativePath(treeRoot, writePath);\r\n                        compoundWrite = compoundWrite.addWrite(relativePath, write.snap);\r\n                    }\r\n                    else if (writePath.contains(treeRoot)) {\r\n                        relativePath = Path.relativePath(writePath, treeRoot);\r\n                        compoundWrite = compoundWrite.addWrite(Path.Empty, write.snap.getChild(relativePath));\r\n                    }\r\n                }\r\n                else if (write.children) {\r\n                    if (treeRoot.contains(writePath)) {\r\n                        relativePath = Path.relativePath(treeRoot, writePath);\r\n                        compoundWrite = compoundWrite.addWrites(relativePath, write.children);\r\n                    }\r\n                    else if (writePath.contains(treeRoot)) {\r\n                        relativePath = Path.relativePath(writePath, treeRoot);\r\n                        if (relativePath.isEmpty()) {\r\n                            compoundWrite = compoundWrite.addWrites(Path.Empty, write.children);\r\n                        }\r\n                        else {\r\n                            var child = util.safeGet(write.children, relativePath.getFront());\r\n                            if (child) {\r\n                                // There exists a child in this node that matches the root path\r\n                                var deepNode = child.getChild(relativePath.popFront());\r\n                                compoundWrite = compoundWrite.addWrite(Path.Empty, deepNode);\r\n                            }\r\n                        }\r\n                    }\r\n                }\r\n                else {\r\n                    throw util.assertionError('WriteRecord should have .snap or .children');\r\n                }\r\n            }\r\n        }\r\n        return compoundWrite;\r\n    };\r\n    return WriteTree;\r\n}());\r\n/**\r\n * A WriteTreeRef wraps a WriteTree and a path, for convenient access to a particular subtree.  All of the methods\r\n * just proxy to the underlying WriteTree.\r\n *\r\n * @constructor\r\n */\r\nvar WriteTreeRef = /** @class */ (function () {\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {!WriteTree} writeTree\r\n     */\r\n    function WriteTreeRef(path, writeTree) {\r\n        this.treePath_ = path;\r\n        this.writeTree_ = writeTree;\r\n    }\r\n    /**\r\n     * If possible, returns a complete event cache, using the underlying server data if possible. In addition, can be used\r\n     * to get a cache that includes hidden writes, and excludes arbitrary writes. Note that customizing the returned node\r\n     * can lead to a more expensive calculation.\r\n     *\r\n     * @param {?Node} completeServerCache\r\n     * @param {Array.<number>=} writeIdsToExclude Optional writes to exclude.\r\n     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false\r\n     * @return {?Node}\r\n     */\r\n    WriteTreeRef.prototype.calcCompleteEventCache = function (completeServerCache, writeIdsToExclude, includeHiddenWrites) {\r\n        return this.writeTree_.calcCompleteEventCache(this.treePath_, completeServerCache, writeIdsToExclude, includeHiddenWrites);\r\n    };\r\n    /**\r\n     * If possible, returns a children node containing all of the complete children we have data for. The returned data is a\r\n     * mix of the given server data and write data.\r\n     *\r\n     * @param {?ChildrenNode} completeServerChildren\r\n     * @return {!ChildrenNode}\r\n     */\r\n    WriteTreeRef.prototype.calcCompleteEventChildren = function (completeServerChildren) {\r\n        return this.writeTree_.calcCompleteEventChildren(this.treePath_, completeServerChildren);\r\n    };\r\n    /**\r\n     * Given that either the underlying server data has updated or the outstanding writes have updated, determine what,\r\n     * if anything, needs to be applied to the event cache.\r\n     *\r\n     * Possibilities:\r\n     *\r\n     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data\r\n     *\r\n     * 2. Some write is completely shadowing. No events to be raised\r\n     *\r\n     * 3. Is partially shadowed. Events should be raised\r\n     *\r\n     * Either existingEventSnap or existingServerSnap must exist, this is validated via an assert\r\n     *\r\n     * @param {!Path} path\r\n     * @param {?Node} existingEventSnap\r\n     * @param {?Node} existingServerSnap\r\n     * @return {?Node}\r\n     */\r\n    WriteTreeRef.prototype.calcEventCacheAfterServerOverwrite = function (path, existingEventSnap, existingServerSnap) {\r\n        return this.writeTree_.calcEventCacheAfterServerOverwrite(this.treePath_, path, existingEventSnap, existingServerSnap);\r\n    };\r\n    /**\r\n     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at\r\n     * a higher path, this will return the child of that write relative to the write and this path.\r\n     * Returns null if there is no write at this path.\r\n     *\r\n     * @param {!Path} path\r\n     * @return {?Node}\r\n     */\r\n    WriteTreeRef.prototype.shadowingWrite = function (path) {\r\n        return this.writeTree_.shadowingWrite(this.treePath_.child(path));\r\n    };\r\n    /**\r\n     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside\r\n     * the window, but may now be in the window\r\n     *\r\n     * @param {?Node} completeServerData\r\n     * @param {!NamedNode} startPost\r\n     * @param {!number} count\r\n     * @param {boolean} reverse\r\n     * @param {!Index} index\r\n     * @return {!Array.<!NamedNode>}\r\n     */\r\n    WriteTreeRef.prototype.calcIndexedSlice = function (completeServerData, startPost, count, reverse, index) {\r\n        return this.writeTree_.calcIndexedSlice(this.treePath_, completeServerData, startPost, count, reverse, index);\r\n    };\r\n    /**\r\n     * Returns a complete child for a given server snap after applying all user writes or null if there is no\r\n     * complete child for this ChildKey.\r\n     *\r\n     * @param {!string} childKey\r\n     * @param {!CacheNode} existingServerCache\r\n     * @return {?Node}\r\n     */\r\n    WriteTreeRef.prototype.calcCompleteChild = function (childKey, existingServerCache) {\r\n        return this.writeTree_.calcCompleteChild(this.treePath_, childKey, existingServerCache);\r\n    };\r\n    /**\r\n     * Return a WriteTreeRef for a child.\r\n     *\r\n     * @param {string} childName\r\n     * @return {!WriteTreeRef}\r\n     */\r\n    WriteTreeRef.prototype.child = function (childName) {\r\n        return new WriteTreeRef(this.treePath_.child(childName), this.writeTree_);\r\n    };\r\n    return WriteTreeRef;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * SyncTree is the central class for managing event callback registration, data caching, views\r\n * (query processing), and event generation.  There are typically two SyncTree instances for\r\n * each Repo, one for the normal Firebase data, and one for the .info data.\r\n *\r\n * It has a number of responsibilities, including:\r\n *  - Tracking all user event callbacks (registered via addEventRegistration() and removeEventRegistration()).\r\n *  - Applying and caching data changes for user set(), transaction(), and update() calls\r\n *    (applyUserOverwrite(), applyUserMerge()).\r\n *  - Applying and caching data changes for server data changes (applyServerOverwrite(),\r\n *    applyServerMerge()).\r\n *  - Generating user-facing events for server and user changes (all of the apply* methods\r\n *    return the set of events that need to be raised as a result).\r\n *  - Maintaining the appropriate set of server listens to ensure we are always subscribed\r\n *    to the correct set of paths and queries to satisfy the current set of user event\r\n *    callbacks (listens are started/stopped using the provided listenProvider).\r\n *\r\n * NOTE: Although SyncTree tracks event callbacks and calculates events to raise, the actual\r\n * events are returned to the caller rather than raised synchronously.\r\n *\r\n * @constructor\r\n */\r\nvar SyncTree = /** @class */ (function () {\r\n    /**\r\n     * @param {!ListenProvider} listenProvider_ Used by SyncTree to start / stop listening\r\n     *   to server data.\r\n     */\r\n    function SyncTree(listenProvider_) {\r\n        this.listenProvider_ = listenProvider_;\r\n        /**\r\n         * Tree of SyncPoints.  There's a SyncPoint at any location that has 1 or more views.\r\n         * @type {!ImmutableTree.<!SyncPoint>}\r\n         * @private\r\n         */\r\n        this.syncPointTree_ = ImmutableTree.Empty;\r\n        /**\r\n         * A tree of all pending user writes (user-initiated set()'s, transaction()'s, update()'s, etc.).\r\n         * @type {!WriteTree}\r\n         * @private\r\n         */\r\n        this.pendingWriteTree_ = new WriteTree();\r\n        this.tagToQueryMap_ = {};\r\n        this.queryToTagMap_ = {};\r\n    }\r\n    /**\r\n     * Apply the data changes for a user-generated set() or transaction() call.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} newData\r\n     * @param {number} writeId\r\n     * @param {boolean=} visible\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyUserOverwrite = function (path, newData, writeId, visible) {\r\n        // Record pending write.\r\n        this.pendingWriteTree_.addOverwrite(path, newData, writeId, visible);\r\n        if (!visible) {\r\n            return [];\r\n        }\r\n        else {\r\n            return this.applyOperationToSyncPoints_(new Overwrite(OperationSource.User, path, newData));\r\n        }\r\n    };\r\n    /**\r\n     * Apply the data from a user-generated update() call\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @param {!number} writeId\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyUserMerge = function (path, changedChildren, writeId) {\r\n        // Record pending merge.\r\n        this.pendingWriteTree_.addMerge(path, changedChildren, writeId);\r\n        var changeTree = ImmutableTree.fromObject(changedChildren);\r\n        return this.applyOperationToSyncPoints_(new Merge(OperationSource.User, path, changeTree));\r\n    };\r\n    /**\r\n     * Acknowledge a pending user write that was previously registered with applyUserOverwrite() or applyUserMerge().\r\n     *\r\n     * @param {!number} writeId\r\n     * @param {boolean=} revert True if the given write failed and needs to be reverted\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.ackUserWrite = function (writeId, revert) {\r\n        if (revert === void 0) { revert = false; }\r\n        var write = this.pendingWriteTree_.getWrite(writeId);\r\n        var needToReevaluate = this.pendingWriteTree_.removeWrite(writeId);\r\n        if (!needToReevaluate) {\r\n            return [];\r\n        }\r\n        else {\r\n            var affectedTree_1 = ImmutableTree.Empty;\r\n            if (write.snap != null) {\r\n                // overwrite\r\n                affectedTree_1 = affectedTree_1.set(Path.Empty, true);\r\n            }\r\n            else {\r\n                util.forEach(write.children, function (pathString, node) {\r\n                    affectedTree_1 = affectedTree_1.set(new Path(pathString), node);\r\n                });\r\n            }\r\n            return this.applyOperationToSyncPoints_(new AckUserWrite(write.path, affectedTree_1, revert));\r\n        }\r\n    };\r\n    /**\r\n     * Apply new server data for the specified path..\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} newData\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyServerOverwrite = function (path, newData) {\r\n        return this.applyOperationToSyncPoints_(new Overwrite(OperationSource.Server, path, newData));\r\n    };\r\n    /**\r\n     * Apply new server data to be merged in at the specified path.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyServerMerge = function (path, changedChildren) {\r\n        var changeTree = ImmutableTree.fromObject(changedChildren);\r\n        return this.applyOperationToSyncPoints_(new Merge(OperationSource.Server, path, changeTree));\r\n    };\r\n    /**\r\n     * Apply a listen complete for a query\r\n     *\r\n     * @param {!Path} path\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyListenComplete = function (path) {\r\n        return this.applyOperationToSyncPoints_(new ListenComplete(OperationSource.Server, path));\r\n    };\r\n    /**\r\n     * Apply new server data for the specified tagged query.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Node} snap\r\n     * @param {!number} tag\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyTaggedQueryOverwrite = function (path, snap, tag) {\r\n        var queryKey = this.queryKeyForTag_(tag);\r\n        if (queryKey != null) {\r\n            var r = SyncTree.parseQueryKey_(queryKey);\r\n            var queryPath = r.path, queryId = r.queryId;\r\n            var relativePath = Path.relativePath(queryPath, path);\r\n            var op = new Overwrite(OperationSource.forServerTaggedQuery(queryId), relativePath, snap);\r\n            return this.applyTaggedOperation_(queryPath, op);\r\n        }\r\n        else {\r\n            // Query must have been removed already\r\n            return [];\r\n        }\r\n    };\r\n    /**\r\n     * Apply server data to be merged in for the specified tagged query.\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!Object.<string, !Node>} changedChildren\r\n     * @param {!number} tag\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyTaggedQueryMerge = function (path, changedChildren, tag) {\r\n        var queryKey = this.queryKeyForTag_(tag);\r\n        if (queryKey) {\r\n            var r = SyncTree.parseQueryKey_(queryKey);\r\n            var queryPath = r.path, queryId = r.queryId;\r\n            var relativePath = Path.relativePath(queryPath, path);\r\n            var changeTree = ImmutableTree.fromObject(changedChildren);\r\n            var op = new Merge(OperationSource.forServerTaggedQuery(queryId), relativePath, changeTree);\r\n            return this.applyTaggedOperation_(queryPath, op);\r\n        }\r\n        else {\r\n            // We've already removed the query. No big deal, ignore the update\r\n            return [];\r\n        }\r\n    };\r\n    /**\r\n     * Apply a listen complete for a tagged query\r\n     *\r\n     * @param {!Path} path\r\n     * @param {!number} tag\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.applyTaggedListenComplete = function (path, tag) {\r\n        var queryKey = this.queryKeyForTag_(tag);\r\n        if (queryKey) {\r\n            var r = SyncTree.parseQueryKey_(queryKey);\r\n            var queryPath = r.path, queryId = r.queryId;\r\n            var relativePath = Path.relativePath(queryPath, path);\r\n            var op = new ListenComplete(OperationSource.forServerTaggedQuery(queryId), relativePath);\r\n            return this.applyTaggedOperation_(queryPath, op);\r\n        }\r\n        else {\r\n            // We've already removed the query. No big deal, ignore the update\r\n            return [];\r\n        }\r\n    };\r\n    /**\r\n     * Add an event callback for the specified query.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {!EventRegistration} eventRegistration\r\n     * @return {!Array.<!Event>} Events to raise.\r\n     */\r\n    SyncTree.prototype.addEventRegistration = function (query, eventRegistration) {\r\n        var path = query.path;\r\n        var serverCache = null;\r\n        var foundAncestorDefaultView = false;\r\n        // Any covering writes will necessarily be at the root, so really all we need to find is the server cache.\r\n        // Consider optimizing this once there's a better understanding of what actual behavior will be.\r\n        this.syncPointTree_.foreachOnPath(path, function (pathToSyncPoint, sp) {\r\n            var relativePath = Path.relativePath(pathToSyncPoint, path);\r\n            serverCache = serverCache || sp.getCompleteServerCache(relativePath);\r\n            foundAncestorDefaultView =\r\n                foundAncestorDefaultView || sp.hasCompleteView();\r\n        });\r\n        var syncPoint = this.syncPointTree_.get(path);\r\n        if (!syncPoint) {\r\n            syncPoint = new SyncPoint();\r\n            this.syncPointTree_ = this.syncPointTree_.set(path, syncPoint);\r\n        }\r\n        else {\r\n            foundAncestorDefaultView =\r\n                foundAncestorDefaultView || syncPoint.hasCompleteView();\r\n            serverCache = serverCache || syncPoint.getCompleteServerCache(Path.Empty);\r\n        }\r\n        var serverCacheComplete;\r\n        if (serverCache != null) {\r\n            serverCacheComplete = true;\r\n        }\r\n        else {\r\n            serverCacheComplete = false;\r\n            serverCache = ChildrenNode.EMPTY_NODE;\r\n            var subtree = this.syncPointTree_.subtree(path);\r\n            subtree.foreachChild(function (childName, childSyncPoint) {\r\n                var completeCache = childSyncPoint.getCompleteServerCache(Path.Empty);\r\n                if (completeCache) {\r\n                    serverCache = serverCache.updateImmediateChild(childName, completeCache);\r\n                }\r\n            });\r\n        }\r\n        var viewAlreadyExists = syncPoint.viewExistsForQuery(query);\r\n        if (!viewAlreadyExists && !query.getQueryParams().loadsAllData()) {\r\n            // We need to track a tag for this query\r\n            var queryKey = SyncTree.makeQueryKey_(query);\r\n            util.assert(!(queryKey in this.queryToTagMap_), 'View does not exist, but we have a tag');\r\n            var tag = SyncTree.getNextQueryTag_();\r\n            this.queryToTagMap_[queryKey] = tag;\r\n            // Coerce to string to avoid sparse arrays.\r\n            this.tagToQueryMap_['_' + tag] = queryKey;\r\n        }\r\n        var writesCache = this.pendingWriteTree_.childWrites(path);\r\n        var events = syncPoint.addEventRegistration(query, eventRegistration, writesCache, serverCache, serverCacheComplete);\r\n        if (!viewAlreadyExists && !foundAncestorDefaultView) {\r\n            var view /** @type !View */ = syncPoint.viewForQuery(query);\r\n            events = events.concat(this.setupListener_(query, view));\r\n        }\r\n        return events;\r\n    };\r\n    /**\r\n     * Remove event callback(s).\r\n     *\r\n     * If query is the default query, we'll check all queries for the specified eventRegistration.\r\n     * If eventRegistration is null, we'll remove all callbacks for the specified query/queries.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {?EventRegistration} eventRegistration If null, all callbacks are removed.\r\n     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.\r\n     * @return {!Array.<!Event>} Cancel events, if cancelError was provided.\r\n     */\r\n    SyncTree.prototype.removeEventRegistration = function (query, eventRegistration, cancelError) {\r\n        var _this = this;\r\n        // Find the syncPoint first. Then deal with whether or not it has matching listeners\r\n        var path = query.path;\r\n        var maybeSyncPoint = this.syncPointTree_.get(path);\r\n        var cancelEvents = [];\r\n        // A removal on a default query affects all queries at that location. A removal on an indexed query, even one without\r\n        // other query constraints, does *not* affect all queries at that location. So this check must be for 'default', and\r\n        // not loadsAllData().\r\n        if (maybeSyncPoint &&\r\n            (query.queryIdentifier() === 'default' ||\r\n                maybeSyncPoint.viewExistsForQuery(query))) {\r\n            /**\r\n             * @type {{removed: !Array.<!Query>, events: !Array.<!Event>}}\r\n             */\r\n            var removedAndEvents = maybeSyncPoint.removeEventRegistration(query, eventRegistration, cancelError);\r\n            if (maybeSyncPoint.isEmpty()) {\r\n                this.syncPointTree_ = this.syncPointTree_.remove(path);\r\n            }\r\n            var removed = removedAndEvents.removed;\r\n            cancelEvents = removedAndEvents.events;\r\n            // We may have just removed one of many listeners and can short-circuit this whole process\r\n            // We may also not have removed a default listener, in which case all of the descendant listeners should already be\r\n            // properly set up.\r\n            //\r\n            // Since indexed queries can shadow if they don't have other query constraints, check for loadsAllData(), instead of\r\n            // queryId === 'default'\r\n            var removingDefault = -1 !==\r\n                removed.findIndex(function (query) {\r\n                    return query.getQueryParams().loadsAllData();\r\n                });\r\n            var covered = this.syncPointTree_.findOnPath(path, function (relativePath, parentSyncPoint) {\r\n                return parentSyncPoint.hasCompleteView();\r\n            });\r\n            if (removingDefault && !covered) {\r\n                var subtree = this.syncPointTree_.subtree(path);\r\n                // There are potentially child listeners. Determine what if any listens we need to send before executing the\r\n                // removal\r\n                if (!subtree.isEmpty()) {\r\n                    // We need to fold over our subtree and collect the listeners to send\r\n                    var newViews = this.collectDistinctViewsForSubTree_(subtree);\r\n                    // Ok, we've collected all the listens we need. Set them up.\r\n                    for (var i = 0; i < newViews.length; ++i) {\r\n                        var view = newViews[i], newQuery = view.getQuery();\r\n                        var listener = this.createListenerForView_(view);\r\n                        this.listenProvider_.startListening(SyncTree.queryForListening_(newQuery), this.tagForQuery_(newQuery), listener.hashFn, listener.onComplete);\r\n                    }\r\n                }\r\n            }\r\n            // If we removed anything and we're not covered by a higher up listen, we need to stop listening on this query\r\n            // The above block has us covered in terms of making sure we're set up on listens lower in the tree.\r\n            // Also, note that if we have a cancelError, it's already been removed at the provider level.\r\n            if (!covered && removed.length > 0 && !cancelError) {\r\n                // If we removed a default, then we weren't listening on any of the other queries here. Just cancel the one\r\n                // default. Otherwise, we need to iterate through and cancel each individual query\r\n                if (removingDefault) {\r\n                    // We don't tag default listeners\r\n                    var defaultTag = null;\r\n                    this.listenProvider_.stopListening(SyncTree.queryForListening_(query), defaultTag);\r\n                }\r\n                else {\r\n                    removed.forEach(function (queryToRemove) {\r\n                        var tagToRemove = _this.queryToTagMap_[SyncTree.makeQueryKey_(queryToRemove)];\r\n                        _this.listenProvider_.stopListening(SyncTree.queryForListening_(queryToRemove), tagToRemove);\r\n                    });\r\n                }\r\n            }\r\n            // Now, clear all of the tags we're tracking for the removed listens\r\n            this.removeTags_(removed);\r\n        }\r\n        return cancelEvents;\r\n    };\r\n    /**\r\n     * Returns a complete cache, if we have one, of the data at a particular path. The location must have a listener above\r\n     * it, but as this is only used by transaction code, that should always be the case anyways.\r\n     *\r\n     * Note: this method will *include* hidden writes from transaction with applyLocally set to false.\r\n     * @param {!Path} path The path to the data we want\r\n     * @param {Array.<number>=} writeIdsToExclude A specific set to be excluded\r\n     * @return {?Node}\r\n     */\r\n    SyncTree.prototype.calcCompleteEventCache = function (path, writeIdsToExclude) {\r\n        var includeHiddenSets = true;\r\n        var writeTree = this.pendingWriteTree_;\r\n        var serverCache = this.syncPointTree_.findOnPath(path, function (pathSoFar, syncPoint) {\r\n            var relativePath = Path.relativePath(pathSoFar, path);\r\n            var serverCache = syncPoint.getCompleteServerCache(relativePath);\r\n            if (serverCache) {\r\n                return serverCache;\r\n            }\r\n        });\r\n        return writeTree.calcCompleteEventCache(path, serverCache, writeIdsToExclude, includeHiddenSets);\r\n    };\r\n    /**\r\n     * This collapses multiple unfiltered views into a single view, since we only need a single\r\n     * listener for them.\r\n     *\r\n     * @param {!ImmutableTree.<!SyncPoint>} subtree\r\n     * @return {!Array.<!View>}\r\n     * @private\r\n     */\r\n    SyncTree.prototype.collectDistinctViewsForSubTree_ = function (subtree) {\r\n        return subtree.fold(function (relativePath, maybeChildSyncPoint, childMap) {\r\n            if (maybeChildSyncPoint && maybeChildSyncPoint.hasCompleteView()) {\r\n                var completeView = maybeChildSyncPoint.getCompleteView();\r\n                return [completeView];\r\n            }\r\n            else {\r\n                // No complete view here, flatten any deeper listens into an array\r\n                var views_1 = [];\r\n                if (maybeChildSyncPoint) {\r\n                    views_1 = maybeChildSyncPoint.getQueryViews();\r\n                }\r\n                util.forEach(childMap, function (key, childViews) {\r\n                    views_1 = views_1.concat(childViews);\r\n                });\r\n                return views_1;\r\n            }\r\n        });\r\n    };\r\n    /**\r\n     * @param {!Array.<!Query>} queries\r\n     * @private\r\n     */\r\n    SyncTree.prototype.removeTags_ = function (queries) {\r\n        for (var j = 0; j < queries.length; ++j) {\r\n            var removedQuery = queries[j];\r\n            if (!removedQuery.getQueryParams().loadsAllData()) {\r\n                // We should have a tag for this\r\n                var removedQueryKey = SyncTree.makeQueryKey_(removedQuery);\r\n                var removedQueryTag = this.queryToTagMap_[removedQueryKey];\r\n                delete this.queryToTagMap_[removedQueryKey];\r\n                delete this.tagToQueryMap_['_' + removedQueryTag];\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Normalizes a query to a query we send the server for listening\r\n     * @param {!Query} query\r\n     * @return {!Query} The normalized query\r\n     * @private\r\n     */\r\n    SyncTree.queryForListening_ = function (query) {\r\n        if (query.getQueryParams().loadsAllData() &&\r\n            !query.getQueryParams().isDefault()) {\r\n            // We treat queries that load all data as default queries\r\n            // Cast is necessary because ref() technically returns Firebase which is actually fb.api.Firebase which inherits\r\n            // from Query\r\n            return /** @type {!Query} */ query.getRef();\r\n        }\r\n        else {\r\n            return query;\r\n        }\r\n    };\r\n    /**\r\n     * For a given new listen, manage the de-duplication of outstanding subscriptions.\r\n     *\r\n     * @param {!Query} query\r\n     * @param {!View} view\r\n     * @return {!Array.<!Event>} This method can return events to support synchronous data sources\r\n     * @private\r\n     */\r\n    SyncTree.prototype.setupListener_ = function (query, view) {\r\n        var path = query.path;\r\n        var tag = this.tagForQuery_(query);\r\n        var listener = this.createListenerForView_(view);\r\n        var events = this.listenProvider_.startListening(SyncTree.queryForListening_(query), tag, listener.hashFn, listener.onComplete);\r\n        var subtree = this.syncPointTree_.subtree(path);\r\n        // The root of this subtree has our query. We're here because we definitely need to send a listen for that, but we\r\n        // may need to shadow other listens as well.\r\n        if (tag) {\r\n            util.assert(!subtree.value.hasCompleteView(), \"If we're adding a query, it shouldn't be shadowed\");\r\n        }\r\n        else {\r\n            // Shadow everything at or below this location, this is a default listener.\r\n            var queriesToStop = subtree.fold(function (relativePath, maybeChildSyncPoint, childMap) {\r\n                if (!relativePath.isEmpty() &&\r\n                    maybeChildSyncPoint &&\r\n                    maybeChildSyncPoint.hasCompleteView()) {\r\n                    return [maybeChildSyncPoint.getCompleteView().getQuery()];\r\n                }\r\n                else {\r\n                    // No default listener here, flatten any deeper queries into an array\r\n                    var queries_1 = [];\r\n                    if (maybeChildSyncPoint) {\r\n                        queries_1 = queries_1.concat(maybeChildSyncPoint.getQueryViews().map(function (view) { return view.getQuery(); }));\r\n                    }\r\n                    util.forEach(childMap, function (key, childQueries) {\r\n                        queries_1 = queries_1.concat(childQueries);\r\n                    });\r\n                    return queries_1;\r\n                }\r\n            });\r\n            for (var i = 0; i < queriesToStop.length; ++i) {\r\n                var queryToStop = queriesToStop[i];\r\n                this.listenProvider_.stopListening(SyncTree.queryForListening_(queryToStop), this.tagForQuery_(queryToStop));\r\n            }\r\n        }\r\n        return events;\r\n    };\r\n    /**\r\n     *\r\n     * @param {!View} view\r\n     * @return {{hashFn: function(), onComplete: function(!string, *)}}\r\n     * @private\r\n     */\r\n    SyncTree.prototype.createListenerForView_ = function (view) {\r\n        var _this = this;\r\n        var query = view.getQuery();\r\n        var tag = this.tagForQuery_(query);\r\n        return {\r\n            hashFn: function () {\r\n                var cache = view.getServerCache() || ChildrenNode.EMPTY_NODE;\r\n                return cache.hash();\r\n            },\r\n            onComplete: function (status) {\r\n                if (status === 'ok') {\r\n                    if (tag) {\r\n                        return _this.applyTaggedListenComplete(query.path, tag);\r\n                    }\r\n                    else {\r\n                        return _this.applyListenComplete(query.path);\r\n                    }\r\n                }\r\n                else {\r\n                    // If a listen failed, kill all of the listeners here, not just the one that triggered the error.\r\n                    // Note that this may need to be scoped to just this listener if we change permissions on filtered children\r\n                    var error = errorForServerCode(status, query);\r\n                    return _this.removeEventRegistration(query, \r\n                    /*eventRegistration*/ null, error);\r\n                }\r\n            }\r\n        };\r\n    };\r\n    /**\r\n     * Given a query, computes a \"queryKey\" suitable for use in our queryToTagMap_.\r\n     * @private\r\n     * @param {!Query} query\r\n     * @return {string}\r\n     */\r\n    SyncTree.makeQueryKey_ = function (query) {\r\n        return query.path.toString() + '$' + query.queryIdentifier();\r\n    };\r\n    /**\r\n     * Given a queryKey (created by makeQueryKey), parse it back into a path and queryId.\r\n     * @private\r\n     * @param {!string} queryKey\r\n     * @return {{queryId: !string, path: !Path}}\r\n     */\r\n    SyncTree.parseQueryKey_ = function (queryKey) {\r\n        var splitIndex = queryKey.indexOf('$');\r\n        util.assert(splitIndex !== -1 && splitIndex < queryKey.length - 1, 'Bad queryKey.');\r\n        return {\r\n            queryId: queryKey.substr(splitIndex + 1),\r\n            path: new Path(queryKey.substr(0, splitIndex))\r\n        };\r\n    };\r\n    /**\r\n     * Return the query associated with the given tag, if we have one\r\n     * @param {!number} tag\r\n     * @return {?string}\r\n     * @private\r\n     */\r\n    SyncTree.prototype.queryKeyForTag_ = function (tag) {\r\n        return this.tagToQueryMap_['_' + tag];\r\n    };\r\n    /**\r\n     * Return the tag associated with the given query.\r\n     * @param {!Query} query\r\n     * @return {?number}\r\n     * @private\r\n     */\r\n    SyncTree.prototype.tagForQuery_ = function (query) {\r\n        var queryKey = SyncTree.makeQueryKey_(query);\r\n        return util.safeGet(this.queryToTagMap_, queryKey);\r\n    };\r\n    /**\r\n     * Static accessor for query tags.\r\n     * @return {number}\r\n     * @private\r\n     */\r\n    SyncTree.getNextQueryTag_ = function () {\r\n        return SyncTree.nextQueryTag_++;\r\n    };\r\n    /**\r\n     * A helper method to apply tagged operations\r\n     *\r\n     * @param {!Path} queryPath\r\n     * @param {!Operation} operation\r\n     * @return {!Array.<!Event>}\r\n     * @private\r\n     */\r\n    SyncTree.prototype.applyTaggedOperation_ = function (queryPath, operation) {\r\n        var syncPoint = this.syncPointTree_.get(queryPath);\r\n        util.assert(syncPoint, \"Missing sync point for query tag that we're tracking\");\r\n        var writesCache = this.pendingWriteTree_.childWrites(queryPath);\r\n        return syncPoint.applyOperation(operation, writesCache, \r\n        /*serverCache=*/ null);\r\n    };\r\n    /**\r\n     * A helper method that visits all descendant and ancestor SyncPoints, applying the operation.\r\n     *\r\n     * NOTES:\r\n     * - Descendant SyncPoints will be visited first (since we raise events depth-first).\r\n  \n     * - We call applyOperation() on each SyncPoint passing three things:\r\n     *   1. A version of the Operation that has been made relative to the SyncPoint location.\r\n     *   2. A WriteTreeRef of any writes we have cached at the SyncPoint location.\r\n     *   3. A snapshot Node with cached server data, if we have it.\r\n  \n     * - We concatenate all of the events returned by each SyncPoint and return the result.\r\n     *\r\n     * @param {!Operation} operation\r\n     * @return {!Array.<!Event>}\r\n     * @private\r\n     */\r\n    SyncTree.prototype.applyOperationToSyncPoints_ = function (operation) {\r\n        return this.applyOperationHelper_(operation, this.syncPointTree_, \r\n        /*serverCache=*/ null, this.pendingWriteTree_.childWrites(Path.Empty));\r\n    };\r\n    /**\r\n     * Recursive helper for applyOperationToSyncPoints_\r\n     *\r\n     * @private\r\n     * @param {!Operation} operation\r\n     * @param {ImmutableTree.<!SyncPoint>} syncPointTree\r\n     * @param {?Node} serverCache\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @return {!Array.<!Event>}\r\n     */\r\n    SyncTree.prototype.applyOperationHelper_ = function (operation, syncPointTree, serverCache, writesCache) {\r\n        if (operation.path.isEmpty()) {\r\n            return this.applyOperationDescendantsHelper_(operation, syncPointTree, serverCache, writesCache);\r\n        }\r\n        else {\r\n            var syncPoint = syncPointTree.get(Path.Empty);\r\n            // If we don't have cached server data, see if we can get it from this SyncPoint.\r\n            if (serverCache == null && syncPoint != null) {\r\n                serverCache = syncPoint.getCompleteServerCache(Path.Empty);\r\n            }\r\n            var events = [];\r\n            var childName = operation.path.getFront();\r\n            var childOperation = operation.operationForChild(childName);\r\n            var childTree = syncPointTree.children.get(childName);\r\n            if (childTree && childOperation) {\r\n                var childServerCache = serverCache\r\n                    ? serverCache.getImmediateChild(childName)\r\n                    : null;\r\n                var childWritesCache = writesCache.child(childName);\r\n                events = events.concat(this.applyOperationHelper_(childOperation, childTree, childServerCache, childWritesCache));\r\n            }\r\n            if (syncPoint) {\r\n                events = events.concat(syncPoint.applyOperation(operation, writesCache, serverCache));\r\n            }\r\n            return events;\r\n        }\r\n    };\r\n    /**\r\n     * Recursive helper for applyOperationToSyncPoints_\r\n     *\r\n     * @private\r\n     * @param {!Operation} operation\r\n     * @param {ImmutableTree.<!SyncPoint>} syncPointTree\r\n     * @param {?Node} serverCache\r\n     * @param {!WriteTreeRef} writesCache\r\n     * @return {!Array.<!Event>}\r\n     */\r\n    SyncTree.prototype.applyOperationDescendantsHelper_ = function (operation, syncPointTree, serverCache, writesCache) {\r\n        var _this = this;\r\n        var syncPoint = syncPointTree.get(Path.Empty);\r\n        // If we don't have cached server data, see if we can get it from this SyncPoint.\r\n        if (serverCache == null && syncPoint != null) {\r\n            serverCache = syncPoint.getCompleteServerCache(Path.Empty);\r\n        }\r\n        var events = [];\r\n        syncPointTree.children.inorderTraversal(function (childName, childTree) {\r\n            var childServerCache = serverCache\r\n                ? serverCache.getImmediateChild(childName)\r\n                : null;\r\n            var childWritesCache = writesCache.child(childName);\r\n            var childOperation = operation.operationForChild(childName);\r\n            if (childOperation) {\r\n                events = events.concat(_this.applyOperationDescendantsHelper_(childOperation, childTree, childServerCache, childWritesCache));\r\n            }\r\n        });\r\n        if (syncPoint) {\r\n            events = events.concat(syncPoint.applyOperation(operation, writesCache, serverCache));\r\n        }\r\n        return events;\r\n    };\r\n    /**\r\n     * Static tracker for next query tag.\r\n     * @type {number}\r\n     * @private\r\n     */\r\n    SyncTree.nextQueryTag_ = 1;\r\n    return SyncTree;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Mutable object which basically just stores a reference to the \"latest\" immutable snapshot.\r\n *\r\n * @constructor\r\n */\r\nvar SnapshotHolder = /** @class */ (function () {\r\n    function SnapshotHolder() {\r\n        this.rootNode_ = ChildrenNode.EMPTY_NODE;\r\n    }\r\n    SnapshotHolder.prototype.getNode = function (path) {\r\n        return this.rootNode_.getChild(path);\r\n    };\r\n    SnapshotHolder.prototype.updateSnapshot = function (path, newSnapshotNode) {\r\n        this.rootNode_ = this.rootNode_.updateChild(path, newSnapshotNode);\r\n    };\r\n    return SnapshotHolder;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Abstraction around FirebaseApp's token fetching capabilities.\r\n */\r\nvar AuthTokenProvider = /** @class */ (function () {\r\n    /**\r\n     * @param {!FirebaseApp} app_\r\n     */\r\n    function AuthTokenProvider(app_) {\r\n        this.app_ = app_;\r\n    }\r\n    /**\r\n     * @param {boolean} forceRefresh\r\n     * @return {!Promise<FirebaseAuthTokenData>}\r\n     */\r\n    AuthTokenProvider.prototype.getToken = function (forceRefresh) {\r\n        return this.app_['INTERNAL']['getToken'](forceRefresh).then(null, \r\n        // .catch\r\n        function (error) {\r\n            // TODO: Need to figure out all the cases this is raised and whether\r\n            // this makes sense.\r\n            if (error && error.code === 'auth/token-not-initialized') {\r\n                log('Got auth/token-not-initialized error.  Treating as null token.');\r\n                return null;\r\n            }\r\n            else {\r\n                return Promise.reject(error);\r\n            }\r\n        });\r\n    };\r\n    AuthTokenProvider.prototype.addTokenChangeListener = function (listener) {\r\n        // TODO: We might want to wrap the listener and call it with no args to\r\n        // avoid a leaky abstraction, but that makes removing the listener harder.\r\n        this.app_['INTERNAL']['addAuthTokenListener'](listener);\r\n    };\r\n    AuthTokenProvider.prototype.removeTokenChangeListener = function (listener) {\r\n        this.app_['INTERNAL']['removeAuthTokenListener'](listener);\r\n    };\r\n    AuthTokenProvider.prototype.notifyForInvalidToken = function () {\r\n        var errorMessage = 'Provided authentication credentials for the app named \"' +\r\n            this.app_.name +\r\n            '\" are invalid. This usually indicates your app was not ' +\r\n            'initialized correctly. ';\r\n        if ('credential' in this.app_.options) {\r\n            errorMessage +=\r\n                'Make sure the \"credential\" property provided to initializeApp() ' +\r\n                    'is authorized to access the specified \"databaseURL\" and is from the correct ' +\r\n                    'project.';\r\n        }\r\n        else if ('serviceAccount' in this.app_.options) {\r\n            errorMessage +=\r\n                'Make sure the \"serviceAccount\" property provided to initializeApp() ' +\r\n                    'is authorized to access the specified \"databaseURL\" and is from the correct ' +\r\n                    'project.';\r\n        }\r\n        else {\r\n            errorMessage +=\r\n                'Make sure the \"apiKey\" and \"databaseURL\" properties provided to ' +\r\n                    'initializeApp() match the values provided for your app at ' +\r\n                    'https://console.firebase.google.com/.';\r\n        }\r\n        warn(errorMessage);\r\n    };\r\n    return AuthTokenProvider;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Tracks a collection of stats.\r\n *\r\n * @constructor\r\n */\r\nvar StatsCollection = /** @class */ (function () {\r\n    function StatsCollection() {\r\n        this.counters_ = {};\r\n    }\r\n    StatsCollection.prototype.incrementCounter = function (name, amount) {\r\n        if (amount === void 0) { amount = 1; }\r\n        if (!util.contains(this.counters_, name))\r\n            this.counters_[name] = 0;\r\n        this.counters_[name] += amount;\r\n    };\r\n    StatsCollection.prototype.get = function () {\r\n        return util.deepCopy(this.counters_);\r\n    };\r\n    return StatsCollection;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar StatsManager = /** @class */ (function () {\r\n    function StatsManager() {\r\n    }\r\n    StatsManager.getCollection = function (repoInfo) {\r\n        var hashString = repoInfo.toString();\r\n        if (!this.collections_[hashString]) {\r\n            this.collections_[hashString] = new StatsCollection();\r\n        }\r\n        return this.collections_[hashString];\r\n    };\r\n    StatsManager.getOrCreateReporter = function (repoInfo, creatorFunction) {\r\n        var hashString = repoInfo.toString();\r\n        if (!this.reporters_[hashString]) {\r\n            this.reporters_[hashString] = creatorFunction();\r\n        }\r\n        return this.reporters_[hashString];\r\n    };\r\n    StatsManager.collections_ = {};\r\n    StatsManager.reporters_ = {};\r\n    return StatsManager;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns the delta from the previous call to get stats.\r\n *\r\n * @param collection_ The collection to \"listen\" to.\r\n * @constructor\r\n */\r\nvar StatsListener = /** @class */ (function () {\r\n    function StatsListener(collection_) {\r\n        this.collection_ = collection_;\r\n        this.last_ = null;\r\n    }\r\n    StatsListener.prototype.get = function () {\r\n        var newStats = this.collection_.get();\r\n        var delta = util.clone(newStats);\r\n        if (this.last_) {\r\n            util.forEach(this.last_, function (stat, value) {\r\n                delta[stat] = delta[stat] - value;\r\n            });\r\n        }\r\n        this.last_ = newStats;\r\n        return delta;\r\n    };\r\n    return StatsListener;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Assuming some apps may have a short amount of time on page, and a bulk of firebase operations probably\r\n// happen on page load, we try to report our first set of stats pretty quickly, but we wait at least 10\r\n// seconds to try to ensure the Firebase connection is established / settled.\r\nvar FIRST_STATS_MIN_TIME = 10 * 1000;\r\nvar FIRST_STATS_MAX_TIME = 30 * 1000;\r\n// We'll continue to report stats on average every 5 minutes.\r\nvar REPORT_STATS_INTERVAL = 5 * 60 * 1000;\r\n/**\r\n * @constructor\r\n */\r\nvar StatsReporter = /** @class */ (function () {\r\n    /**\r\n     * @param collection\r\n     * @param server_\r\n     */\r\n    function StatsReporter(collection, server_) {\r\n        this.server_ = server_;\r\n        this.statsToReport_ = {};\r\n        this.statsListener_ = new StatsListener(collection);\r\n        var timeout = FIRST_STATS_MIN_TIME +\r\n            (FIRST_STATS_MAX_TIME - FIRST_STATS_MIN_TIME) * Math.random();\r\n        setTimeoutNonBlocking(this.reportStats_.bind(this), Math.floor(timeout));\r\n    }\r\n    StatsReporter.prototype.includeStat = function (stat) {\r\n        this.statsToReport_[stat] = true;\r\n    };\r\n    StatsReporter.prototype.reportStats_ = function () {\r\n        var _this = this;\r\n        var stats = this.statsListener_.get();\r\n        var reportedStats = {};\r\n        var haveStatsToReport = false;\r\n        util.forEach(stats, function (stat, value) {\r\n            if (value > 0 && util.contains(_this.statsToReport_, stat)) {\r\n                reportedStats[stat] = value;\r\n                haveStatsToReport = true;\r\n            }\r\n        });\r\n        if (haveStatsToReport) {\r\n            this.server_.reportStats(reportedStats);\r\n        }\r\n        // queue our next run.\r\n        setTimeoutNonBlocking(this.reportStats_.bind(this), Math.floor(Math.random() * 2 * REPORT_STATS_INTERVAL));\r\n    };\r\n    return StatsReporter;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * The event queue serves a few purposes:\r\n * 1. It ensures we maintain event order in the face of event callbacks doing operations that result in more\r\n *    events being queued.\r\n * 2. raiseQueuedEvents() handles being called reentrantly nicely.  That is, if in the course of raising events,\r\n *    raiseQueuedEvents() is called again, the \"inner\" call will pick up raising events where the \"outer\" call\r\n *    left off, ensuring that the events are still raised synchronously and in order.\r\n * 3. You can use raiseEventsAtPath and raiseEventsForChangedPath to ensure only relevant previously-queued\r\n *    events are raised synchronously.\r\n *\r\n * NOTE: This can all go away if/when we move to async events.\r\n *\r\n * @constructor\r\n */\r\nvar EventQueue = /** @class */ (function () {\r\n    function EventQueue() {\r\n        /**\r\n         * @private\r\n         * @type {!Array.<EventList>}\r\n         */\r\n        this.eventLists_ = [];\r\n        /**\r\n         * Tracks recursion depth of raiseQueuedEvents_, for debugging purposes.\r\n         * @private\r\n         * @type {!number}\r\n         */\r\n        this.recursionDepth_ = 0;\r\n    }\r\n    /**\r\n     * @param {!Array.<Event>} eventDataList The new events to queue.\r\n     */\r\n    EventQueue.prototype.queueEvents = function (eventDataList) {\r\n        // We group events by path, storing them in a single EventList, to make it easier to skip over them quickly.\r\n        var currList = null;\r\n        for (var i = 0; i < eventDataList.length; i++) {\r\n            var eventData = eventDataList[i];\r\n            var eventPath = eventData.getPath();\r\n            if (currList !== null && !eventPath.equals(currList.getPath())) {\r\n                this.eventLists_.push(currList);\r\n                currList = null;\r\n            }\r\n            if (currList === null) {\r\n                currList = new EventList(eventPath);\r\n            }\r\n            currList.add(eventData);\r\n        }\r\n        if (currList) {\r\n            this.eventLists_.push(currList);\r\n        }\r\n    };\r\n    /**\r\n     * Queues the specified events and synchronously raises all events (including previously queued ones)\r\n     * for the specified path.\r\n     *\r\n     * It is assumed that the new events are all for the specified path.\r\n     *\r\n     * @param {!Path} path The path to raise events for.\r\n     * @param {!Array.<Event>} eventDataList The new events to raise.\r\n     */\r\n    EventQueue.prototype.raiseEventsAtPath = function (path, eventDataList) {\r\n        this.queueEvents(eventDataList);\r\n        this.raiseQueuedEventsMatchingPredicate_(function (eventPath) {\r\n            return eventPath.equals(path);\r\n        });\r\n    };\r\n    /**\r\n     * Queues the specified events and synchronously raises all events (including previously queued ones) for\r\n     * locations related to the specified change path (i.e. all ancestors and descendants).\r\n     *\r\n     * It is assumed that the new events are all related (ancestor or descendant) to the specified path.\r\n     *\r\n     * @param {!Path} changedPath The path to raise events for.\r\n     * @param {!Array.<!Event>} eventDataList The events to raise\r\n     */\r\n    EventQueue.prototype.raiseEventsForChangedPath = function (changedPath, eventDataList) {\r\n        this.queueEvents(eventDataList);\r\n        this.raiseQueuedEventsMatchingPredicate_(function (eventPath) {\r\n            return eventPath.contains(changedPath) || changedPath.contains(eventPath);\r\n        });\r\n    };\r\n    /**\r\n     * @param {!function(!Path):boolean} predicate\r\n     * @private\r\n     */\r\n    EventQueue.prototype.raiseQueuedEventsMatchingPredicate_ = function (predicate) {\r\n        this.recursionDepth_++;\r\n        var sentAll = true;\r\n        for (var i = 0; i < this.eventLists_.length; i++) {\r\n            var eventList = this.eventLists_[i];\r\n            if (eventList) {\r\n                var eventPath = eventList.getPath();\r\n                if (predicate(eventPath)) {\r\n                    this.eventLists_[i].raise();\r\n                    this.eventLists_[i] = null;\r\n                }\r\n                else {\r\n                    sentAll = false;\r\n                }\r\n            }\r\n        }\r\n        if (sentAll) {\r\n            this.eventLists_ = [];\r\n        }\r\n        this.recursionDepth_--;\r\n    };\r\n    return EventQueue;\r\n}());\r\n/**\r\n * @param {!Path} path\r\n * @constructor\r\n */\r\nvar EventList = /** @class */ (function () {\r\n    function EventList(path_) {\r\n        this.path_ = path_;\r\n        /**\r\n         * @type {!Array.<Event>}\r\n         * @private\r\n         */\r\n        this.events_ = [];\r\n    }\r\n    /**\r\n     * @param {!Event} eventData\r\n     */\r\n    EventList.prototype.add = function (eventData) {\r\n        this.events_.push(eventData);\r\n    };\r\n    /**\r\n     * Iterates through the list and raises each event\r\n     */\r\n    EventList.prototype.raise = function () {\r\n        for (var i = 0; i < this.events_.length; i++) {\r\n            var eventData = this.events_[i];\r\n            if (eventData !== null) {\r\n                this.events_[i] = null;\r\n                var eventFn = eventData.getEventRunner();\r\n                if (logger) {\r\n                    log('event: ' + eventData.toString());\r\n                }\r\n                exceptionGuard(eventFn);\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * @return {!Path}\r\n     */\r\n    EventList.prototype.getPath = function () {\r\n        return this.path_;\r\n    };\r\n    return EventList;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Base class to be used if you want to emit events. Call the constructor with\r\n * the set of allowed event names.\r\n */\r\nvar EventEmitter = /** @class */ (function () {\r\n    /**\r\n     * @param {!Array.<string>} allowedEvents_\r\n     */\r\n    function EventEmitter(allowedEvents_) {\r\n        this.allowedEvents_ = allowedEvents_;\r\n        this.listeners_ = {};\r\n        util.assert(Array.isArray(allowedEvents_) && allowedEvents_.length > 0, 'Requires a non-empty array');\r\n    }\r\n    /**\r\n     * To be called by derived classes to trigger events.\r\n     * @param {!string} eventType\r\n     * @param {...*} var_args\r\n     */\r\n    EventEmitter.prototype.trigger = function (eventType) {\r\n        var var_args = [];\r\n        for (var _i = 1; _i < arguments.length; _i++) {\r\n            var_args[_i - 1] = arguments[_i];\r\n        }\r\n        if (Array.isArray(this.listeners_[eventType])) {\r\n            // Clone the list, since callbacks could add/remove listeners.\r\n            var listeners = this.listeners_[eventType].slice();\r\n            for (var i = 0; i < listeners.length; i++) {\r\n                listeners[i].callback.apply(listeners[i].context, var_args);\r\n            }\r\n        }\r\n    };\r\n    EventEmitter.prototype.on = function (eventType, callback, context) {\r\n        this.validateEventType_(eventType);\r\n        this.listeners_[eventType] = this.listeners_[eventType] || [];\r\n        this.listeners_[eventType].push({ callback: callback, context: context });\r\n        var eventData = this.getInitialEvent(eventType);\r\n        if (eventData) {\r\n            callback.apply(context, eventData);\r\n        }\r\n    };\r\n    EventEmitter.prototype.off = function (eventType, callback, context) {\r\n        this.validateEventType_(eventType);\r\n        var listeners = this.listeners_[eventType] || [];\r\n        for (var i = 0; i < listeners.length; i++) {\r\n            if (listeners[i].callback === callback &&\r\n                (!context || context === listeners[i].context)) {\r\n                listeners.splice(i, 1);\r\n                return;\r\n            }\r\n        }\r\n    };\r\n    EventEmitter.prototype.validateEventType_ = function (eventType) {\r\n        util.assert(this.allowedEvents_.find(function (et) {\r\n            return et === eventType;\r\n        }), 'Unknown event: ' + eventType);\r\n    };\r\n    return EventEmitter;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @extends {EventEmitter}\r\n */\r\nvar VisibilityMonitor = /** @class */ (function (_super) {\r\n    tslib_1.__extends(VisibilityMonitor, _super);\r\n    function VisibilityMonitor() {\r\n        var _this = _super.call(this, ['visible']) || this;\r\n        var hidden;\r\n        var visibilityChange;\r\n        if (typeof document !== 'undefined' &&\r\n            typeof document.addEventListener !== 'undefined') {\r\n            if (typeof document['hidden'] !== 'undefined') {\r\n                // Opera 12.10 and Firefox 18 and later support\r\n                visibilityChange = 'visibilitychange';\r\n                hidden = 'hidden';\r\n            }\r\n            else if (typeof document['mozHidden'] !== 'undefined') {\r\n                visibilityChange = 'mozvisibilitychange';\r\n                hidden = 'mozHidden';\r\n            }\r\n            else if (typeof document['msHidden'] !== 'undefined') {\r\n                visibilityChange = 'msvisibilitychange';\r\n                hidden = 'msHidden';\r\n            }\r\n            else if (typeof document['webkitHidden'] !== 'undefined') {\r\n                visibilityChange = 'webkitvisibilitychange';\r\n                hidden = 'webkitHidden';\r\n            }\r\n        }\r\n        // Initially, we always assume we are visible. This ensures that in browsers\r\n        // without page visibility support or in cases where we are never visible\r\n        // (e.g. chrome extension), we act as if we are visible, i.e. don't delay\r\n        // reconnects\r\n        _this.visible_ = true;\r\n        if (visibilityChange) {\r\n            document.addEventListener(visibilityChange, function () {\r\n                var visible = !document[hidden];\r\n                if (visible !== _this.visible_) {\r\n                    _this.visible_ = visible;\r\n                    _this.trigger('visible', visible);\r\n                }\r\n            }, false);\r\n        }\r\n        return _this;\r\n    }\r\n    VisibilityMonitor.getInstance = function () {\r\n        return new VisibilityMonitor();\r\n    };\r\n    /**\r\n     * @param {!string} eventType\r\n     * @return {Array.<boolean>}\r\n     */\r\n    VisibilityMonitor.prototype.getInitialEvent = function (eventType) {\r\n        util.assert(eventType === 'visible', 'Unknown event type: ' + eventType);\r\n        return [this.visible_];\r\n    };\r\n    return VisibilityMonitor;\r\n}(EventEmitter));\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Monitors online state (as reported by window.online/offline events).\r\n *\r\n * The expectation is that this could have many false positives (thinks we are online\r\n * when we're not), but no false negatives.  So we can safely use it to determine when\r\n * we definitely cannot reach the internet.\r\n *\r\n * @extends {EventEmitter}\r\n */\r\nvar OnlineMonitor = /** @class */ (function (_super) {\r\n    tslib_1.__extends(OnlineMonitor, _super);\r\n    function OnlineMonitor() {\r\n        var _this = _super.call(this, ['online']) || this;\r\n        _this.online_ = true;\r\n        // We've had repeated complaints that Cordova apps can get stuck \"offline\", e.g.\r\n        // https://forum.ionicframework.com/t/firebase-connection-is-lost-and-never-come-back/43810\r\n        // It would seem that the 'online' event does not always fire consistently. So we disable it\r\n        // for Cordova.\r\n        if (typeof window !== 'undefined' &&\r\n            typeof window.addEventListener !== 'undefined' &&\r\n            !util.isMobileCordova()) {\r\n            window.addEventListener('online', function () {\r\n                if (!_this.online_) {\r\n                    _this.online_ = true;\r\n                    _this.trigger('online', true);\r\n                }\r\n            }, false);\r\n            window.addEventListener('offline', function () {\r\n                if (_this.online_) {\r\n                    _this.online_ = false;\r\n                    _this.trigger('online', false);\r\n                }\r\n            }, false);\r\n        }\r\n        return _this;\r\n    }\r\n    OnlineMonitor.getInstance = function () {\r\n        return new OnlineMonitor();\r\n    };\r\n    /**\r\n     * @param {!string} eventType\r\n     * @return {Array.<boolean>}\r\n     */\r\n    OnlineMonitor.prototype.getInitialEvent = function (eventType) {\r\n        util.assert(eventType === 'online', 'Unknown event type: ' + eventType);\r\n        return [this.online_];\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    OnlineMonitor.prototype.currentlyOnline = function () {\r\n        return this.online_;\r\n    };\r\n    return OnlineMonitor;\r\n}(EventEmitter));\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * This class ensures the packets from the server arrive in order\r\n * This class takes data from the server and ensures it gets passed into the callbacks in order.\r\n * @constructor\r\n */\r\nvar PacketReceiver = /** @class */ (function () {\r\n    /**\r\n     * @param onMessage_\r\n     */\r\n    function PacketReceiver(onMessage_) {\r\n        this.onMessage_ = onMessage_;\r\n        this.pendingResponses = [];\r\n        this.currentResponseNum = 0;\r\n        this.closeAfterResponse = -1;\r\n        this.onClose = null;\r\n    }\r\n    PacketReceiver.prototype.closeAfter = function (responseNum, callback) {\r\n        this.closeAfterResponse = responseNum;\r\n        this.onClose = callback;\r\n        if (this.closeAfterResponse < this.currentResponseNum) {\r\n            this.onClose();\r\n            this.onClose = null;\r\n        }\r\n    };\r\n    /**\r\n     * Each message from the server comes with a response number, and an array of data. The responseNumber\r\n     * allows us to ensure that we process them in the right order, since we can't be guaranteed that all\r\n     * browsers will respond in the same order as the requests we sent\r\n     * @param {number} requestNum\r\n     * @param {Array} data\r\n     */\r\n    PacketReceiver.prototype.handleResponse = function (requestNum, data) {\r\n        var _this = this;\r\n        this.pendingResponses[requestNum] = data;\r\n        var _loop_1 = function () {\r\n            var toProcess = this_1.pendingResponses[this_1.currentResponseNum];\r\n            delete this_1.pendingResponses[this_1.currentResponseNum];\r\n            var _loop_2 = function (i) {\r\n                if (toProcess[i]) {\r\n                    exceptionGuard(function () {\r\n                        _this.onMessage_(toProcess[i]);\r\n                    });\r\n                }\r\n            };\r\n            for (var i = 0; i < toProcess.length; ++i) {\r\n                _loop_2(i);\r\n            }\r\n            if (this_1.currentResponseNum === this_1.closeAfterResponse) {\r\n                if (this_1.onClose) {\r\n                    this_1.onClose();\r\n                    this_1.onClose = null;\r\n                }\r\n                return \"break\";\r\n            }\r\n            this_1.currentResponseNum++;\r\n        };\r\n        var this_1 = this;\r\n        while (this.pendingResponses[this.currentResponseNum]) {\r\n            var state_1 = _loop_1();\r\n            if (state_1 === \"break\")\r\n                break;\r\n        }\r\n    };\r\n    return PacketReceiver;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// URL query parameters associated with longpolling\r\nvar FIREBASE_LONGPOLL_START_PARAM = 'start';\r\nvar FIREBASE_LONGPOLL_CLOSE_COMMAND = 'close';\r\nvar FIREBASE_LONGPOLL_COMMAND_CB_NAME = 'pLPCommand';\r\nvar FIREBASE_LONGPOLL_DATA_CB_NAME = 'pRTLPCB';\r\nvar FIREBASE_LONGPOLL_ID_PARAM = 'id';\r\nvar FIREBASE_LONGPOLL_PW_PARAM = 'pw';\r\nvar FIREBASE_LONGPOLL_SERIAL_PARAM = 'ser';\r\nvar FIREBASE_LONGPOLL_CALLBACK_ID_PARAM = 'cb';\r\nvar FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM = 'seg';\r\nvar FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET = 'ts';\r\nvar FIREBASE_LONGPOLL_DATA_PARAM = 'd';\r\nvar FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM = 'disconn';\r\nvar FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM = 'dframe';\r\n//Data size constants.\r\n//TODO: Perf: the maximum length actually differs from browser to browser.\r\n// We should check what browser we're on and set accordingly.\r\nvar MAX_URL_DATA_SIZE = 1870;\r\nvar SEG_HEADER_SIZE = 30; //ie: &seg=8299234&ts=982389123&d=\r\nvar MAX_PAYLOAD_SIZE = MAX_URL_DATA_SIZE - SEG_HEADER_SIZE;\r\n/**\r\n * Keepalive period\r\n * send a fresh request at minimum every 25 seconds. Opera has a maximum request\r\n * length of 30 seconds that we can't exceed.\r\n * @const\r\n * @type {number}\r\n */\r\nvar KEEPALIVE_REQUEST_INTERVAL = 25000;\r\n/**\r\n * How long to wait before aborting a long-polling connection attempt.\r\n * @const\r\n * @type {number}\r\n */\r\nvar LP_CONNECT_TIMEOUT = 30000;\r\n/**\r\n * This class manages a single long-polling connection.\r\n *\r\n * @constructor\r\n * @implements {Transport}\r\n */\r\nvar BrowserPollConnection = /** @class */ (function () {\r\n    /**\r\n     * @param {string} connId An identifier for this connection, used for logging\r\n     * @param {RepoInfo} repoInfo The info for the endpoint to send data to.\r\n     * @param {string=} transportSessionId Optional transportSessionid if we are reconnecting for an existing\r\n     *                                         transport session\r\n     * @param {string=}  lastSessionId Optional lastSessionId if the PersistentConnection has already created a\r\n     *                                     connection previously\r\n     */\r\n    function BrowserPollConnection(connId, repoInfo, transportSessionId, lastSessionId) {\r\n        this.connId = connId;\r\n        this.repoInfo = repoInfo;\r\n        this.transportSessionId = transportSessionId;\r\n        this.lastSessionId = lastSessionId;\r\n        this.bytesSent = 0;\r\n        this.bytesReceived = 0;\r\n        this.everConnected_ = false;\r\n        this.log_ = logWrapper(connId);\r\n        this.stats_ = StatsManager.getCollection(repoInfo);\r\n        this.urlFn = function (params) {\r\n            return repoInfo.connectionURL(LONG_POLLING, params);\r\n        };\r\n    }\r\n    /**\r\n     *\r\n     * @param {function(Object)} onMessage Callback when messages arrive\r\n     * @param {function()} onDisconnect Callback with connection lost.\r\n     */\r\n    BrowserPollConnection.prototype.open = function (onMessage, onDisconnect) {\r\n        var _this = this;\r\n        this.curSegmentNum = 0;\r\n        this.onDisconnect_ = onDisconnect;\r\n        this.myPacketOrderer = new PacketReceiver(onMessage);\r\n        this.isClosed_ = false;\r\n        this.connectTimeoutTimer_ = setTimeout(function () {\r\n            _this.log_('Timed out trying to connect.');\r\n            // Make sure we clear the host cache\r\n            _this.onClosed_();\r\n            _this.connectTimeoutTimer_ = null;\r\n        }, Math.floor(LP_CONNECT_TIMEOUT));\r\n        // Ensure we delay the creation of the iframe until the DOM is loaded.\r\n        executeWhenDOMReady(function () {\r\n            if (_this.isClosed_)\r\n                return;\r\n            //Set up a callback that gets triggered once a connection is set up.\r\n            _this.scriptTagHolder = new FirebaseIFrameScriptHolder(function () {\r\n                var args = [];\r\n                for (var _i = 0; _i < arguments.length; _i++) {\r\n                    args[_i] = arguments[_i];\r\n                }\r\n                var command = args[0], arg1 = args[1], arg2 = args[2];\r\n                _this.incrementIncomingBytes_(args);\r\n                if (!_this.scriptTagHolder)\r\n                    return; // we closed the connection.\r\n                if (_this.connectTimeoutTimer_) {\r\n                    clearTimeout(_this.connectTimeoutTimer_);\r\n                    _this.connectTimeoutTimer_ = null;\r\n                }\r\n                _this.everConnected_ = true;\r\n                if (command == FIREBASE_LONGPOLL_START_PARAM) {\r\n                    _this.id = arg1;\r\n                    _this.password = arg2;\r\n                }\r\n                else if (command === FIREBASE_LONGPOLL_CLOSE_COMMAND) {\r\n                    // Don't clear the host cache. We got a response from the server, so we know it's reachable\r\n                    if (arg1) {\r\n                        // We aren't expecting any more data (other than what the server's already in the process of sending us\r\n                        // through our already open polls), so don't send any more.\r\n                        _this.scriptTagHolder.sendNewPolls = false;\r\n                        // arg1 in this case is the last response number sent by the server. We should try to receive\r\n                        // all of the responses up to this one before closing\r\n                        _this.myPacketOrderer.closeAfter(arg1, function () {\r\n                            _this.onClosed_();\r\n                        });\r\n                    }\r\n                    else {\r\n                        _this.onClosed_();\r\n                    }\r\n                }\r\n                else {\r\n                    throw new Error('Unrecognized command received: ' + command);\r\n                }\r\n            }, function () {\r\n                var args = [];\r\n                for (var _i = 0; _i < arguments.length; _i++) {\r\n                    args[_i] = arguments[_i];\r\n                }\r\n                var pN = args[0], data = args[1];\r\n                _this.incrementIncomingBytes_(args);\r\n                _this.myPacketOrderer.handleResponse(pN, data);\r\n            }, function () {\r\n                _this.onClosed_();\r\n            }, _this.urlFn);\r\n            //Send the initial request to connect. The serial number is simply to keep the browser from pulling previous results\r\n            //from cache.\r\n            var urlParams = {};\r\n            urlParams[FIREBASE_LONGPOLL_START_PARAM] = 't';\r\n            urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = Math.floor(Math.random() * 100000000);\r\n            if (_this.scriptTagHolder.uniqueCallbackIdentifier)\r\n                urlParams[FIREBASE_LONGPOLL_CALLBACK_ID_PARAM] = _this.scriptTagHolder.uniqueCallbackIdentifier;\r\n            urlParams[VERSION_PARAM] = PROTOCOL_VERSION;\r\n            if (_this.transportSessionId) {\r\n                urlParams[TRANSPORT_SESSION_PARAM] = _this.transportSessionId;\r\n            }\r\n            if (_this.lastSessionId) {\r\n                urlParams[LAST_SESSION_PARAM] = _this.lastSessionId;\r\n            }\r\n            if (!util.isNodeSdk() &&\r\n                typeof location !== 'undefined' &&\r\n                location.href &&\r\n                location.href.indexOf(FORGE_DOMAIN) !== -1) {\r\n                urlParams[REFERER_PARAM] = FORGE_REF;\r\n            }\r\n            var connectURL = _this.urlFn(urlParams);\r\n            _this.log_('Connecting via long-poll to ' + connectURL);\r\n            _this.scriptTagHolder.addTag(connectURL, function () {\r\n                /* do nothing */\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Call this when a handshake has completed successfully and we want to consider the connection established\r\n     */\r\n    BrowserPollConnection.prototype.start = function () {\r\n        this.scriptTagHolder.startLongPoll(this.id, this.password);\r\n        this.addDisconnectPingFrame(this.id, this.password);\r\n    };\r\n    /**\r\n     * Forces long polling to be considered as a potential transport\r\n     */\r\n    BrowserPollConnection.forceAllow = function () {\r\n        BrowserPollConnection.forceAllow_ = true;\r\n    };\r\n    /**\r\n     * Forces longpolling to not be considered as a potential transport\r\n     */\r\n    BrowserPollConnection.forceDisallow = function () {\r\n        BrowserPollConnection.forceDisallow_ = true;\r\n    };\r\n    // Static method, use string literal so it can be accessed in a generic way\r\n    BrowserPollConnection.isAvailable = function () {\r\n        // NOTE: In React-Native there's normally no 'document', but if you debug a React-Native app in\r\n        // the Chrome debugger, 'document' is defined, but document.createElement is null (2015/06/08).\r\n        return (BrowserPollConnection.forceAllow_ ||\r\n            (!BrowserPollConnection.forceDisallow_ &&\r\n                typeof document !== 'undefined' &&\r\n                document.createElement != null &&\r\n                !isChromeExtensionContentScript() &&\r\n                !isWindowsStoreApp() &&\r\n                !util.isNodeSdk()));\r\n    };\r\n    /**\r\n     * No-op for polling\r\n     */\r\n    BrowserPollConnection.prototype.markConnectionHealthy = function () { };\r\n    /**\r\n     * Stops polling and cleans up the iframe\r\n     * @private\r\n     */\r\n    BrowserPollConnection.prototype.shutdown_ = function () {\r\n        this.isClosed_ = true;\r\n        if (this.scriptTagHolder) {\r\n            this.scriptTagHolder.close();\r\n            this.scriptTagHolder = null;\r\n        }\r\n        //remove the disconnect frame, which will trigger an XHR call to the server to tell it we're leaving.\r\n        if (this.myDisconnFrame) {\r\n            document.body.removeChild(this.myDisconnFrame);\r\n            this.myDisconnFrame = null;\r\n        }\r\n        if (this.connectTimeoutTimer_) {\r\n            clearTimeout(this.connectTimeoutTimer_);\r\n            this.connectTimeoutTimer_ = null;\r\n        }\r\n    };\r\n    /**\r\n     * Triggered when this transport is closed\r\n     * @private\r\n     */\r\n    BrowserPollConnection.prototype.onClosed_ = function () {\r\n        if (!this.isClosed_) {\r\n            this.log_('Longpoll is closing itself');\r\n            this.shutdown_();\r\n            if (this.onDisconnect_) {\r\n                this.onDisconnect_(this.everConnected_);\r\n                this.onDisconnect_ = null;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * External-facing close handler. RealTime has requested we shut down. Kill our connection and tell the server\r\n     * that we've left.\r\n     */\r\n    BrowserPollConnection.prototype.close = function () {\r\n        if (!this.isClosed_) {\r\n            this.log_('Longpoll is being closed.');\r\n            this.shutdown_();\r\n        }\r\n    };\r\n    /**\r\n     * Send the JSON object down to the server. It will need to be stringified, base64 encoded, and then\r\n     * broken into chunks (since URLs have a small maximum length).\r\n     * @param {!Object} data The JSON data to transmit.\r\n     */\r\n    BrowserPollConnection.prototype.send = function (data) {\r\n        var dataStr = util.stringify(data);\r\n        this.bytesSent += dataStr.length;\r\n        this.stats_.incrementCounter('bytes_sent', dataStr.length);\r\n        //first, lets get the base64-encoded data\r\n        var base64data = util.base64Encode(dataStr);\r\n        //We can only fit a certain amount in each URL, so we need to split this request\r\n        //up into multiple pieces if it doesn't fit in one request.\r\n        var dataSegs = splitStringBySize(base64data, MAX_PAYLOAD_SIZE);\r\n        //Enqueue each segment for transmission. We assign each chunk a sequential ID and a total number\r\n        //of segments so that we can reassemble the packet on the server.\r\n        for (var i = 0; i < dataSegs.length; i++) {\r\n            this.scriptTagHolder.enqueueSegment(this.curSegmentNum, dataSegs.length, dataSegs[i]);\r\n            this.curSegmentNum++;\r\n        }\r\n    };\r\n    /**\r\n     * This is how we notify the server that we're leaving.\r\n     * We aren't able to send requests with DHTML on a window close event, but we can\r\n     * trigger XHR requests in some browsers (everything but Opera basically).\r\n     * @param {!string} id\r\n     * @param {!string} pw\r\n     */\r\n    BrowserPollConnection.prototype.addDisconnectPingFrame = function (id, pw) {\r\n        if (util.isNodeSdk())\r\n            return;\r\n        this.myDisconnFrame = document.createElement('iframe');\r\n        var urlParams = {};\r\n        urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM] = 't';\r\n        urlParams[FIREBASE_LONGPOLL_ID_PARAM] = id;\r\n        urlParams[FIREBASE_LONGPOLL_PW_PARAM] = pw;\r\n        this.myDisconnFrame.src = this.urlFn(urlParams);\r\n        this.myDisconnFrame.style.display = 'none';\r\n        document.body.appendChild(this.myDisconnFrame);\r\n    };\r\n    /**\r\n     * Used to track the bytes received by this client\r\n     * @param {*} args\r\n     * @private\r\n     */\r\n    BrowserPollConnection.prototype.incrementIncomingBytes_ = function (args) {\r\n        // TODO: This is an annoying perf hit just to track the number of incoming bytes.  Maybe it should be opt-in.\r\n        var bytesReceived = util.stringify(args).length;\r\n        this.bytesReceived += bytesReceived;\r\n        this.stats_.incrementCounter('bytes_received', bytesReceived);\r\n    };\r\n    return BrowserPollConnection;\r\n}());\r\n/*********************************************************************************************\r\n * A wrapper around an iframe that is used as a long-polling script holder.\r\n * @constructor\r\n *********************************************************************************************/\r\nvar FirebaseIFrameScriptHolder = /** @class */ (function () {\r\n    /**\r\n     * @param commandCB - The callback to be called when control commands are recevied from the server.\r\n     * @param onMessageCB - The callback to be triggered when responses arrive from the server.\r\n     * @param onDisconnect - The callback to be triggered when this tag holder is closed\r\n     * @param urlFn - A function that provides the URL of the endpoint to send data to.\r\n     */\r\n    function FirebaseIFrameScriptHolder(commandCB, onMessageCB, onDisconnect, urlFn) {\r\n        this.onDisconnect = onDisconnect;\r\n        this.urlFn = urlFn;\r\n        //We maintain a count of all of the outstanding requests, because if we have too many active at once it can cause\r\n        //problems in some browsers.\r\n        /**\r\n         * @type {CountedSet.<number, number>}\r\n         */\r\n        this.outstandingRequests = new CountedSet();\r\n        //A queue of the pending segments waiting for transmission to the server.\r\n        this.pendingSegs = [];\r\n        //A serial number. We use this for two things:\r\n        // 1) A way to ensure the browser doesn't cache responses to polls\r\n        // 2) A way to make the server aware when long-polls arrive in a different order than we started them. The\r\n        //    server needs to release both polls in this case or it will cause problems in Opera since Opera can only execute\r\n        //    JSONP code in the order it was added to the iframe.\r\n        this.currentSerial = Math.floor(Math.random() * 100000000);\r\n        // This gets set to false when we're \"closing down\" the connection (e.g. we're switching transports but there's still\r\n        // incoming data from the server that we're waiting for).\r\n        this.sendNewPolls = true;\r\n        if (!util.isNodeSdk()) {\r\n            //Each script holder registers a couple of uniquely named callbacks with the window. These are called from the\r\n            //iframes where we put the long-polling script tags. We have two callbacks:\r\n            //   1) Command Callback - Triggered for control issues, like starting a connection.\r\n            //   2) Message Callback - Triggered when new data arrives.\r\n            this.uniqueCallbackIdentifier = LUIDGenerator();\r\n            window[FIREBASE_LONGPOLL_COMMAND_CB_NAME + this.uniqueCallbackIdentifier] = commandCB;\r\n            window[FIREBASE_LONGPOLL_DATA_CB_NAME + this.uniqueCallbackIdentifier] = onMessageCB;\r\n            //Create an iframe for us to add script tags to.\r\n            this.myIFrame = FirebaseIFrameScriptHolder.createIFrame_();\r\n            // Set the iframe's contents.\r\n            var script = '';\r\n            // if we set a javascript url, it's IE and we need to set the document domain. The javascript url is sufficient\r\n            // for ie9, but ie8 needs to do it again in the document itself.\r\n            if (this.myIFrame.src &&\r\n                this.myIFrame.src.substr(0, 'javascript:'.length) === 'javascript:') {\r\n                var currentDomain = document.domain;\r\n                script = '<script>document.domain=\"' + currentDomain + '\";</script>';\r\n            }\r\n            var iframeContents = '<html><body>' + script + '</body></html>';\r\n            try {\r\n                this.myIFrame.doc.open();\r\n                this.myIFrame.doc.write(iframeContents);\r\n                this.myIFrame.doc.close();\r\n            }\r\n            catch (e) {\r\n                log('frame writing exception');\r\n                if (e.stack) {\r\n                    log(e.stack);\r\n                }\r\n                log(e);\r\n            }\r\n        }\r\n        else {\r\n            this.commandCB = commandCB;\r\n            this.onMessageCB = onMessageCB;\r\n        }\r\n    }\r\n    /**\r\n     * Each browser has its own funny way to handle iframes. Here we mush them all together into one object that I can\r\n     * actually use.\r\n     * @private\r\n     * @return {Element}\r\n     */\r\n    FirebaseIFrameScriptHolder.createIFrame_ = function () {\r\n        var iframe = document.createElement('iframe');\r\n        iframe.style.display = 'none';\r\n        // This is necessary in order to initialize the document inside the iframe\r\n        if (document.body) {\r\n            document.body.appendChild(iframe);\r\n            try {\r\n                // If document.domain has been modified in IE, this will throw an error, and we need to set the\r\n                // domain of the iframe's document manually. We can do this via a javascript: url as the src attribute\r\n                // Also note that we must do this *after* the iframe has been appended to the page. Otherwise it doesn't work.\r\n                var a = iframe.contentWindow.document;\r\n                if (!a) {\r\n                    // Apologies for the log-spam, I need to do something to keep closure from optimizing out the assignment above.\r\n                    log('No IE domain setting required');\r\n                }\r\n            }\r\n            catch (e) {\r\n                var domain = document.domain;\r\n                iframe.src =\r\n                    \"javascript:void((function(){document.open();document.domain='\" +\r\n                        domain +\r\n                        \"';document.close();})())\";\r\n            }\r\n        }\r\n        else {\r\n            // LongPollConnection attempts to delay initialization until the document is ready, so hopefully this\r\n            // never gets hit.\r\n            throw 'Document body has not initialized. Wait to initialize Firebase until after the document is ready.';\r\n        }\r\n        // Get the document of the iframe in a browser-specific way.\r\n        if (iframe.contentDocument) {\r\n            iframe.doc = iframe.contentDocument; // Firefox, Opera, Safari\r\n        }\r\n        else if (iframe.contentWindow) {\r\n            iframe.doc = iframe.contentWindow.document; // Internet Explorer\r\n        }\r\n        else if (iframe.document) {\r\n            iframe.doc = iframe.document; //others?\r\n        }\r\n        return iframe;\r\n    };\r\n    /**\r\n     * Cancel all outstanding queries and remove the frame.\r\n     */\r\n    FirebaseIFrameScriptHolder.prototype.close = function () {\r\n        var _this = this;\r\n        //Mark this iframe as dead, so no new requests are sent.\r\n        this.alive = false;\r\n        if (this.myIFrame) {\r\n            //We have to actually remove all of the html inside this iframe before removing it from the\r\n            //window, or IE will continue loading and executing the script tags we've already added, which\r\n            //can lead to some errors being thrown. Setting innerHTML seems to be the easiest way to do this.\r\n            this.myIFrame.doc.body.innerHTML = '';\r\n            setTimeout(function () {\r\n                if (_this.myIFrame !== null) {\r\n                    document.body.removeChild(_this.myIFrame);\r\n                    _this.myIFrame = null;\r\n                }\r\n            }, Math.floor(0));\r\n        }\r\n        if (util.isNodeSdk() && this.myID) {\r\n            var urlParams = {};\r\n            urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM] = 't';\r\n            urlParams[FIREBASE_LONGPOLL_ID_PARAM] = this.myID;\r\n            urlParams[FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;\r\n            var theURL = this.urlFn(urlParams);\r\n            FirebaseIFrameScriptHolder.nodeRestRequest(theURL);\r\n        }\r\n        // Protect from being called recursively.\r\n        var onDisconnect = this.onDisconnect;\r\n        if (onDisconnect) {\r\n            this.onDisconnect = null;\r\n            onDisconnect();\r\n        }\r\n    };\r\n    /**\r\n     * Actually start the long-polling session by adding the first script tag(s) to the iframe.\r\n     * @param {!string} id - The ID of this connection\r\n     * @param {!string} pw - The password for this connection\r\n     */\r\n    FirebaseIFrameScriptHolder.prototype.startLongPoll = function (id, pw) {\r\n        this.myID = id;\r\n        this.myPW = pw;\r\n        this.alive = true;\r\n        //send the initial request. If there are requests queued, make sure that we transmit as many as we are currently able to.\r\n        while (this.newRequest_()) { }\r\n    };\r\n    /**\r\n     * This is called any time someone might want a script tag to be added. It adds a script tag when there aren't\r\n     * too many outstanding requests and we are still alive.\r\n     *\r\n     * If there are outstanding packet segments to send, it sends one. If there aren't, it sends a long-poll anyways if\r\n     * needed.\r\n     */\r\n    FirebaseIFrameScriptHolder.prototype.newRequest_ = function () {\r\n        // We keep one outstanding request open all the time to receive data, but if we need to send data\r\n        // (pendingSegs.length > 0) then we create a new request to send the data.  The server will automatically\r\n        // close the old request.\r\n        if (this.alive &&\r\n            this.sendNewPolls &&\r\n            this.outstandingRequests.count() < (this.pendingSegs.length > 0 ? 2 : 1)) {\r\n            //construct our url\r\n            this.currentSerial++;\r\n            var urlParams = {};\r\n            urlParams[FIREBASE_LONGPOLL_ID_PARAM] = this.myID;\r\n            urlParams[FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;\r\n            urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = this.currentSerial;\r\n            var theURL = this.urlFn(urlParams);\r\n            //Now add as much data as we can.\r\n            var curDataString = '';\r\n            var i = 0;\r\n            while (this.pendingSegs.length > 0) {\r\n                //first, lets see if the next segment will fit.\r\n                var nextSeg = this.pendingSegs[0];\r\n                if (nextSeg.d.length + SEG_HEADER_SIZE + curDataString.length <=\r\n                    MAX_URL_DATA_SIZE) {\r\n                    //great, the segment will fit. Lets append it.\r\n                    var theSeg = this.pendingSegs.shift();\r\n                    curDataString =\r\n                        curDataString +\r\n                            '&' +\r\n                            FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM +\r\n                            i +\r\n                            '=' +\r\n                            theSeg.seg +\r\n                            '&' +\r\n                            FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET +\r\n                            i +\r\n                            '=' +\r\n                            theSeg.ts +\r\n                            '&' +\r\n                            FIREBASE_LONGPOLL_DATA_PARAM +\r\n                            i +\r\n                            '=' +\r\n                            theSeg.d;\r\n                    i++;\r\n                }\r\n                else {\r\n                    break;\r\n                }\r\n            }\r\n            theURL = theURL + curDataString;\r\n            this.addLongPollTag_(theURL, this.currentSerial);\r\n            return true;\r\n        }\r\n        else {\r\n            return false;\r\n        }\r\n    };\r\n    /**\r\n     * Queue a packet for transmission to the server.\r\n     * @param segnum - A sequential id for this packet segment used for reassembly\r\n     * @param totalsegs - The total number of segments in this packet\r\n     * @param data - The data for this segment.\r\n     */\r\n    FirebaseIFrameScriptHolder.prototype.enqueueSegment = function (segnum, totalsegs, data) {\r\n        //add this to the queue of segments to send.\r\n        this.pendingSegs.push({ seg: segnum, ts: totalsegs, d: data });\r\n        //send the data immediately if there isn't already data being transmitted, unless\r\n        //startLongPoll hasn't been called yet.\r\n        if (this.alive) {\r\n            this.newRequest_();\r\n        }\r\n    };\r\n    /**\r\n     * Add a script tag for a regular long-poll request.\r\n     * @param {!string} url - The URL of the script tag.\r\n     * @param {!number} serial - The serial number of the request.\r\n     * @private\r\n     */\r\n    FirebaseIFrameScriptHolder.prototype.addLongPollTag_ = function (url, serial) {\r\n        var _this = this;\r\n        //remember that we sent this request.\r\n        this.outstandingRequests.add(serial, 1);\r\n        var doNewRequest = function () {\r\n            _this.outstandingRequests.remove(serial);\r\n            _this.newRequest_();\r\n        };\r\n        // If this request doesn't return on its own accord (by the server sending us some data), we'll\r\n        // create a new one after the KEEPALIVE interval to make sure we always keep a fresh request open.\r\n        var keepaliveTimeout = setTimeout(doNewRequest, Math.floor(KEEPALIVE_REQUEST_INTERVAL));\r\n        var readyStateCB = function () {\r\n            // Request completed.  Cancel the keepalive.\r\n            clearTimeout(keepaliveTimeout);\r\n            // Trigger a new request so we can continue receiving data.\r\n            doNewRequest();\r\n        };\r\n        this.addTag(url, readyStateCB);\r\n    };\r\n    /**\r\n     * Add an arbitrary script tag to the iframe.\r\n     * @param {!string} url - The URL for the script tag source.\r\n     * @param {!function()} loadCB - A callback to be triggered once the script has loaded.\r\n     */\r\n    FirebaseIFrameScriptHolder.prototype.addTag = function (url, loadCB) {\r\n        var _this = this;\r\n        if (util.isNodeSdk()) {\r\n            this.doNodeLongPoll(url, loadCB);\r\n        }\r\n        else {\r\n            setTimeout(function () {\r\n                try {\r\n                    // if we're already closed, don't add this poll\r\n                    if (!_this.sendNewPolls)\r\n                        return;\r\n                    var newScript_1 = _this.myIFrame.doc.createElement('script');\r\n                    newScript_1.type = 'text/javascript';\r\n                    newScript_1.async = true;\r\n                    newScript_1.src = url;\r\n                    newScript_1.onload = newScript_1.onreadystatechange = function () {\r\n                        var rstate = newScript_1.readyState;\r\n                        if (!rstate || rstate === 'loaded' || rstate === 'complete') {\r\n                            newScript_1.onload = newScript_1.onreadystatechange = null;\r\n                            if (newScript_1.parentNode) {\r\n                                newScript_1.parentNode.removeChild(newScript_1);\r\n                            }\r\n                            loadCB();\r\n                        }\r\n                    };\r\n                    newScript_1.onerror = function () {\r\n                        log('Long-poll script failed to load: ' + url);\r\n                        _this.sendNewPolls = false;\r\n                        _this.close();\r\n                    };\r\n                    _this.myIFrame.doc.body.appendChild(newScript_1);\r\n                }\r\n                catch (e) {\r\n                    // TODO: we should make this error visible somehow\r\n                }\r\n            }, Math.floor(1));\r\n        }\r\n    };\r\n    return FirebaseIFrameScriptHolder;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar WEBSOCKET_MAX_FRAME_SIZE = 16384;\r\nvar WEBSOCKET_KEEPALIVE_INTERVAL = 45000;\r\nvar WebSocketImpl = null;\r\nif (typeof MozWebSocket !== 'undefined') {\r\n    WebSocketImpl = MozWebSocket;\r\n}\r\nelse if (typeof WebSocket !== 'undefined') {\r\n    WebSocketImpl = WebSocket;\r\n}\r\n/**\r\n * Create a new websocket connection with the given callbacks.\r\n * @constructor\r\n * @implements {Transport}\r\n */\r\nvar WebSocketConnection = /** @class */ (function () {\r\n    /**\r\n     * @param {string} connId identifier for this transport\r\n     * @param {RepoInfo} repoInfo The info for the websocket endpoint.\r\n     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport\r\n     *                                         session\r\n     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection\r\n     */\r\n    function WebSocketConnection(connId, repoInfo, transportSessionId, lastSessionId) {\r\n        this.connId = connId;\r\n        this.keepaliveTimer = null;\r\n        this.frames = null;\r\n        this.totalFrames = 0;\r\n        this.bytesSent = 0;\r\n        this.bytesReceived = 0;\r\n        this.log_ = logWrapper(this.connId);\r\n        this.stats_ = StatsManager.getCollection(repoInfo);\r\n        this.connURL = WebSocketConnection.connectionURL_(repoInfo, transportSessionId, lastSessionId);\r\n    }\r\n    /**\r\n     * @param {RepoInfo} repoInfo The info for the websocket endpoint.\r\n     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport\r\n     *                                         session\r\n     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection\r\n     * @return {string} connection url\r\n     * @private\r\n     */\r\n    WebSocketConnection.connectionURL_ = function (repoInfo, transportSessionId, lastSessionId) {\r\n        var urlParams = {};\r\n        urlParams[VERSION_PARAM] = PROTOCOL_VERSION;\r\n        if (!util.isNodeSdk() &&\r\n            typeof location !== 'undefined' &&\r\n            location.href &&\r\n            location.href.indexOf(FORGE_DOMAIN) !== -1) {\r\n            urlParams[REFERER_PARAM] = FORGE_REF;\r\n        }\r\n        if (transportSessionId) {\r\n            urlParams[TRANSPORT_SESSION_PARAM] = transportSessionId;\r\n        }\r\n        if (lastSessionId) {\r\n            urlParams[LAST_SESSION_PARAM] = lastSessionId;\r\n        }\r\n        return repoInfo.connectionURL(WEBSOCKET, urlParams);\r\n    };\r\n    /**\r\n     *\r\n     * @param onMessage Callback when messages arrive\r\n     * @param onDisconnect Callback with connection lost.\r\n     */\r\n    WebSocketConnection.prototype.open = function (onMessage, onDisconnect) {\r\n        var _this = this;\r\n        this.onDisconnect = onDisconnect;\r\n        this.onMessage = onMessage;\r\n        this.log_('Websocket connecting to ' + this.connURL);\r\n        this.everConnected_ = false;\r\n        // Assume failure until proven otherwise.\r\n        PersistentStorage.set('previous_websocket_failure', true);\r\n        try {\r\n            if (util.isNodeSdk()) {\r\n                var device = util.CONSTANTS.NODE_ADMIN ? 'AdminNode' : 'Node';\r\n                // UA Format: Firebase/<wire_protocol>/<sdk_version>/<platform>/<device>\r\n                var options = {\r\n                    headers: {\r\n                        'User-Agent': \"Firebase/\" + PROTOCOL_VERSION + \"/\" + firebase.SDK_VERSION + \"/\" + process.platform + \"/\" + device\r\n                    }\r\n                };\r\n                // Plumb appropriate http_proxy environment variable into faye-websocket if it exists.\r\n                var env = process['env'];\r\n                var proxy = this.connURL.indexOf('wss://') == 0\r\n                    ? env['HTTPS_PROXY'] || env['https_proxy']\r\n                    : env['HTTP_PROXY'] || env['http_proxy'];\r\n                if (proxy) {\r\n                    options['proxy'] = { origin: proxy };\r\n                }\r\n                this.mySock = new WebSocketImpl(this.connURL, [], options);\r\n            }\r\n            else {\r\n                this.mySock = new WebSocketImpl(this.connURL);\r\n            }\r\n        }\r\n        catch (e) {\r\n            this.log_('Error instantiating WebSocket.');\r\n            var error = e.message || e.data;\r\n            if (error) {\r\n                this.log_(error);\r\n            }\r\n            this.onClosed_();\r\n            return;\r\n        }\r\n        this.mySock.onopen = function () {\r\n            _this.log_('Websocket connected.');\r\n            _this.everConnected_ = true;\r\n        };\r\n        this.mySock.onclose = function () {\r\n            _this.log_('Websocket connection was disconnected.');\r\n            _this.mySock = null;\r\n            _this.onClosed_();\r\n        };\r\n        this.mySock.onmessage = function (m) {\r\n            _this.handleIncomingFrame(m);\r\n        };\r\n        this.mySock.onerror = function (e) {\r\n            _this.log_('WebSocket error.  Closing connection.');\r\n            var error = e.message || e.data;\r\n            if (error) {\r\n                _this.log_(error);\r\n            }\r\n            _this.onClosed_();\r\n        };\r\n    };\r\n    /**\r\n     * No-op for websockets, we don't need to do anything once the connection is confirmed as open\r\n     */\r\n    WebSocketConnection.prototype.start = function () { };\r\n    WebSocketConnection.forceDisallow = function () {\r\n        WebSocketConnection.forceDisallow_ = true;\r\n    };\r\n    WebSocketConnection.isAvailable = function () {\r\n        var isOldAndroid = false;\r\n        if (typeof navigator !== 'undefined' && navigator.userAgent) {\r\n            var oldAndroidRegex = /Android ([0-9]{0,}\\.[0-9]{0,})/;\r\n            var oldAndroidMatch = navigator.userAgent.match(oldAndroidRegex);\r\n            if (oldAndroidMatch && oldAndroidMatch.length > 1) {\r\n                if (parseFloat(oldAndroidMatch[1]) < 4.4) {\r\n                    isOldAndroid = true;\r\n                }\r\n            }\r\n        }\r\n        return (!isOldAndroid &&\r\n            WebSocketImpl !== null &&\r\n            !WebSocketConnection.forceDisallow_);\r\n    };\r\n    /**\r\n     * Returns true if we previously failed to connect with this transport.\r\n     * @return {boolean}\r\n     */\r\n    WebSocketConnection.previouslyFailed = function () {\r\n        // If our persistent storage is actually only in-memory storage,\r\n        // we default to assuming that it previously failed to be safe.\r\n        return (PersistentStorage.isInMemoryStorage ||\r\n            PersistentStorage.get('previous_websocket_failure') === true);\r\n    };\r\n    WebSocketConnection.prototype.markConnectionHealthy = function () {\r\n        PersistentStorage.remove('previous_websocket_failure');\r\n    };\r\n    WebSocketConnection.prototype.appendFrame_ = function (data) {\r\n        this.frames.push(data);\r\n        if (this.frames.length == this.totalFrames) {\r\n            var fullMess = this.frames.join('');\r\n            this.frames = null;\r\n            var jsonMess = util.jsonEval(fullMess);\r\n            //handle the message\r\n            this.onMessage(jsonMess);\r\n        }\r\n    };\r\n    /**\r\n     * @param {number} frameCount The number of frames we are expecting from the server\r\n     * @private\r\n     */\r\n    WebSocketConnection.prototype.handleNewFrameCount_ = function (frameCount) {\r\n        this.totalFrames = frameCount;\r\n        this.frames = [];\r\n    };\r\n    /**\r\n     * Attempts to parse a frame count out of some text. If it can't, assumes a value of 1\r\n     * @param {!String} data\r\n     * @return {?String} Any remaining data to be process, or null if there is none\r\n     * @private\r\n     */\r\n    WebSocketConnection.prototype.extractFrameCount_ = function (data) {\r\n        util.assert(this.frames === null, 'We already have a frame buffer');\r\n        // TODO: The server is only supposed to send up to 9999 frames (i.e. length <= 4), but that isn't being enforced\r\n        // currently.  So allowing larger frame counts (length <= 6).  See https://app.asana.com/0/search/8688598998380/8237608042508\r\n        if (data.length <= 6) {\r\n            var frameCount = Number(data);\r\n            if (!isNaN(frameCount)) {\r\n                this.handleNewFrameCount_(frameCount);\r\n                return null;\r\n            }\r\n        }\r\n        this.handleNewFrameCount_(1);\r\n        return data;\r\n    };\r\n    /**\r\n     * Process a websocket frame that has arrived from the server.\r\n     * @param mess The frame data\r\n     */\r\n    WebSocketConnection.prototype.handleIncomingFrame = function (mess) {\r\n        if (this.mySock === null)\r\n            return; // Chrome apparently delivers incoming packets even after we .close() the connection sometimes.\r\n        var data = mess['data'];\r\n        this.bytesReceived += data.length;\r\n        this.stats_.incrementCounter('bytes_received', data.length);\r\n        this.resetKeepAlive();\r\n        if (this.frames !== null) {\r\n            // we're buffering\r\n            this.appendFrame_(data);\r\n        }\r\n        else {\r\n            // try to parse out a frame count, otherwise, assume 1 and process it\r\n            var remainingData = this.extractFrameCount_(data);\r\n            if (remainingData !== null) {\r\n                this.appendFrame_(remainingData);\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Send a message to the server\r\n     * @param {Object} data The JSON object to transmit\r\n     */\r\n    WebSocketConnection.prototype.send = function (data) {\r\n        this.resetKeepAlive();\r\n        var dataStr = util.stringify(data);\r\n        this.bytesSent += dataStr.length;\r\n        this.stats_.incrementCounter('bytes_sent', dataStr.length);\r\n        //We can only fit a certain amount in each websocket frame, so we need to split this request\r\n        //up into multiple pieces if it doesn't fit in one request.\r\n        var dataSegs = splitStringBySize(dataStr, WEBSOCKET_MAX_FRAME_SIZE);\r\n        //Send the length header\r\n        if (dataSegs.length > 1) {\r\n            this.sendString_(String(dataSegs.length));\r\n        }\r\n        //Send the actual data in segments.\r\n        for (var i = 0; i < dataSegs.length; i++) {\r\n            this.sendString_(dataSegs[i]);\r\n        }\r\n    };\r\n    WebSocketConnection.prototype.shutdown_ = function () {\r\n        this.isClosed_ = true;\r\n        if (this.keepaliveTimer) {\r\n            clearInterval(this.keepaliveTimer);\r\n            this.keepaliveTimer = null;\r\n        }\r\n        if (this.mySock) {\r\n            this.mySock.close();\r\n            this.mySock = null;\r\n        }\r\n    };\r\n    WebSocketConnection.prototype.onClosed_ = function () {\r\n        if (!this.isClosed_) {\r\n            this.log_('WebSocket is closing itself');\r\n            this.shutdown_();\r\n            // since this is an internal close, trigger the close listener\r\n            if (this.onDisconnect) {\r\n                this.onDisconnect(this.everConnected_);\r\n                this.onDisconnect = null;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * External-facing close handler.\r\n     * Close the websocket and kill the connection.\r\n     */\r\n    WebSocketConnection.prototype.close = function () {\r\n        if (!this.isClosed_) {\r\n            this.log_('WebSocket is being closed');\r\n            this.shutdown_();\r\n        }\r\n    };\r\n    /**\r\n     * Kill the current keepalive timer and start a new one, to ensure that it always fires N seconds after\r\n     * the last activity.\r\n     */\r\n    WebSocketConnection.prototype.resetKeepAlive = function () {\r\n        var _this = this;\r\n        clearInterval(this.keepaliveTimer);\r\n        this.keepaliveTimer = setInterval(function () {\r\n            //If there has been no websocket activity for a while, send a no-op\r\n            if (_this.mySock) {\r\n                _this.sendString_('0');\r\n            }\r\n            _this.resetKeepAlive();\r\n        }, Math.floor(WEBSOCKET_KEEPALIVE_INTERVAL));\r\n    };\r\n    /**\r\n     * Send a string over the websocket.\r\n     *\r\n     * @param {string} str String to send.\r\n     * @private\r\n     */\r\n    WebSocketConnection.prototype.sendString_ = function (str) {\r\n        // Firefox seems to sometimes throw exceptions (NS_ERROR_UNEXPECTED) from websocket .send()\r\n        // calls for some unknown reason.  We treat these as an error and disconnect.\r\n        // See https://app.asana.com/0/58926111402292/68021340250410\r\n        try {\r\n            this.mySock.send(str);\r\n        }\r\n        catch (e) {\r\n            this.log_('Exception thrown from WebSocket.send():', e.message || e.data, 'Closing connection.');\r\n            setTimeout(this.onClosed_.bind(this), 0);\r\n        }\r\n    };\r\n    /**\r\n     * Number of response before we consider the connection \"healthy.\"\r\n     * @type {number}\r\n     */\r\n    WebSocketConnection.responsesRequiredToBeHealthy = 2;\r\n    /**\r\n     * Time to wait for the connection te become healthy before giving up.\r\n     * @type {number}\r\n     */\r\n    WebSocketConnection.healthyTimeout = 30000;\r\n    return WebSocketConnection;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Currently simplistic, this class manages what transport a Connection should use at various stages of its\r\n * lifecycle.\r\n *\r\n * It starts with longpolling in a browser, and httppolling on node. It then upgrades to websockets if\r\n * they are available.\r\n * @constructor\r\n */\r\nvar TransportManager = /** @class */ (function () {\r\n    /**\r\n     * @param {!RepoInfo} repoInfo Metadata around the namespace we're connecting to\r\n     */\r\n    function TransportManager(repoInfo) {\r\n        this.initTransports_(repoInfo);\r\n    }\r\n    Object.defineProperty(TransportManager, \"ALL_TRANSPORTS\", {\r\n        /**\r\n         * @const\r\n         * @type {!Array.<function(new:Transport, string, RepoInfo, string=)>}\r\n         */\r\n        get: function () {\r\n            return [BrowserPollConnection, WebSocketConnection];\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * @param {!RepoInfo} repoInfo\r\n     * @private\r\n     */\r\n    TransportManager.prototype.initTransports_ = function (repoInfo) {\r\n        var isWebSocketsAvailable = WebSocketConnection && WebSocketConnection['isAvailable']();\r\n        var isSkipPollConnection = isWebSocketsAvailable && !WebSocketConnection.previouslyFailed();\r\n        if (repoInfo.webSocketOnly) {\r\n            if (!isWebSocketsAvailable)\r\n                warn(\"wss:// URL used, but browser isn't known to support websockets.  Trying anyway.\");\r\n            isSkipPollConnection = true;\r\n        }\r\n        if (isSkipPollConnection) {\r\n            this.transports_ = [WebSocketConnection];\r\n        }\r\n        else {\r\n            var transports_1 = (this.transports_ = []);\r\n            each(TransportManager.ALL_TRANSPORTS, function (i, transport) {\r\n                if (transport && transport['isAvailable']()) {\r\n                    transports_1.push(transport);\r\n                }\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * @return {function(new:Transport, !string, !RepoInfo, string=, string=)} The constructor for the\r\n     * initial transport to use\r\n     */\r\n    TransportManager.prototype.initialTransport = function () {\r\n        if (this.transports_.length > 0) {\r\n            return this.transports_[0];\r\n        }\r\n        else {\r\n            throw new Error('No transports available');\r\n        }\r\n    };\r\n    /**\r\n     * @return {?function(new:Transport, function(),function(), string=)} The constructor for the next\r\n     * transport, or null\r\n     */\r\n    TransportManager.prototype.upgradeTransport = function () {\r\n        if (this.transports_.length > 1) {\r\n            return this.transports_[1];\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    };\r\n    return TransportManager;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Abort upgrade attempt if it takes longer than 60s.\r\nvar UPGRADE_TIMEOUT = 60000;\r\n// For some transports (WebSockets), we need to \"validate\" the transport by exchanging a few requests and responses.\r\n// If we haven't sent enough requests within 5s, we'll start sending noop ping requests.\r\nvar DELAY_BEFORE_SENDING_EXTRA_REQUESTS = 5000;\r\n// If the initial data sent triggers a lot of bandwidth (i.e. it's a large put or a listen for a large amount of data)\r\n// then we may not be able to exchange our ping/pong requests within the healthy timeout.  So if we reach the timeout\r\n// but we've sent/received enough bytes, we don't cancel the connection.\r\nvar BYTES_SENT_HEALTHY_OVERRIDE = 10 * 1024;\r\nvar BYTES_RECEIVED_HEALTHY_OVERRIDE = 100 * 1024;\r\nvar MESSAGE_TYPE = 't';\r\nvar MESSAGE_DATA = 'd';\r\nvar CONTROL_SHUTDOWN = 's';\r\nvar CONTROL_RESET = 'r';\r\nvar CONTROL_ERROR = 'e';\r\nvar CONTROL_PONG = 'o';\r\nvar SWITCH_ACK = 'a';\r\nvar END_TRANSMISSION = 'n';\r\nvar PING = 'p';\r\nvar SERVER_HELLO = 'h';\r\n/**\r\n * Creates a new real-time connection to the server using whichever method works\r\n * best in the current browser.\r\n *\r\n * @constructor\r\n */\r\nvar Connection = /** @class */ (function () {\r\n    /**\r\n     * @param {!string} id - an id for this connection\r\n     * @param {!RepoInfo} repoInfo_ - the info for the endpoint to connect to\r\n     * @param {function(Object)} onMessage_ - the callback to be triggered when a server-push message arrives\r\n     * @param {function(number, string)} onReady_ - the callback to be triggered when this connection is ready to send messages.\r\n     * @param {function()} onDisconnect_ - the callback to be triggered when a connection was lost\r\n     * @param {function(string)} onKill_ - the callback to be triggered when this connection has permanently shut down.\r\n     * @param {string=} lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server\r\n     */\r\n    function Connection(id, repoInfo_, onMessage_, onReady_, onDisconnect_, onKill_, lastSessionId) {\r\n        this.id = id;\r\n        this.repoInfo_ = repoInfo_;\r\n        this.onMessage_ = onMessage_;\r\n        this.onReady_ = onReady_;\r\n        this.onDisconnect_ = onDisconnect_;\r\n        this.onKill_ = onKill_;\r\n        this.lastSessionId = lastSessionId;\r\n        this.connectionCount = 0;\r\n        this.pendingDataMessages = [];\r\n        this.state_ = 0 /* CONNECTING */;\r\n        this.log_ = logWrapper('c:' + this.id + ':');\r\n        this.transportManager_ = new TransportManager(repoInfo_);\r\n        this.log_('Connection created');\r\n        this.start_();\r\n    }\r\n    /**\r\n     * Starts a connection attempt\r\n     * @private\r\n     */\r\n    Connection.prototype.start_ = function () {\r\n        var _this = this;\r\n        var conn = this.transportManager_.initialTransport();\r\n        this.conn_ = new conn(this.nextTransportId_(), this.repoInfo_, undefined, this.lastSessionId);\r\n        // For certain transports (WebSockets), we need to send and receive several messages back and forth before we\r\n        // can consider the transport healthy.\r\n        this.primaryResponsesRequired_ = conn['responsesRequiredToBeHealthy'] || 0;\r\n        var onMessageReceived = this.connReceiver_(this.conn_);\r\n        var onConnectionLost = this.disconnReceiver_(this.conn_);\r\n        this.tx_ = this.conn_;\r\n        this.rx_ = this.conn_;\r\n        this.secondaryConn_ = null;\r\n        this.isHealthy_ = false;\r\n        /*\r\n         * Firefox doesn't like when code from one iframe tries to create another iframe by way of the parent frame.\r\n         * This can occur in the case of a redirect, i.e. we guessed wrong on what server to connect to and received a reset.\r\n         * Somehow, setTimeout seems to make this ok. That doesn't make sense from a security perspective, since you should\r\n         * still have the context of your originating frame.\r\n         */\r\n        setTimeout(function () {\r\n            // this.conn_ gets set to null in some of the tests. Check to make sure it still exists before using it\r\n            _this.conn_ && _this.conn_.open(onMessageReceived, onConnectionLost);\r\n        }, Math.floor(0));\r\n        var healthyTimeout_ms = conn['healthyTimeout'] || 0;\r\n        if (healthyTimeout_ms > 0) {\r\n            this.healthyTimeout_ = setTimeoutNonBlocking(function () {\r\n                _this.healthyTimeout_ = null;\r\n                if (!_this.isHealthy_) {\r\n                    if (_this.conn_ &&\r\n                        _this.conn_.bytesReceived > BYTES_RECEIVED_HEALTHY_OVERRIDE) {\r\n                        _this.log_('Connection exceeded healthy timeout but has received ' +\r\n                            _this.conn_.bytesReceived +\r\n                            ' bytes.  Marking connection healthy.');\r\n                        _this.isHealthy_ = true;\r\n                        _this.conn_.markConnectionHealthy();\r\n                    }\r\n                    else if (_this.conn_ &&\r\n                        _this.conn_.bytesSent > BYTES_SENT_HEALTHY_OVERRIDE) {\r\n                        _this.log_('Connection exceeded healthy timeout but has sent ' +\r\n                            _this.conn_.bytesSent +\r\n                            ' bytes.  Leaving connection alive.');\r\n                        // NOTE: We don't want to mark it healthy, since we have no guarantee that the bytes have made it to\r\n                        // the server.\r\n                    }\r\n                    else {\r\n                        _this.log_('Closing unhealthy connection after timeout.');\r\n                        _this.close();\r\n                    }\r\n                }\r\n            }, Math.floor(healthyTimeout_ms));\r\n        }\r\n    };\r\n    /**\r\n     * @return {!string}\r\n     * @private\r\n     */\r\n    Connection.prototype.nextTransportId_ = function () {\r\n        return 'c:' + this.id + ':' + this.connectionCount++;\r\n    };\r\n    Connection.prototype.disconnReceiver_ = function (conn) {\r\n        var _this = this;\r\n        return function (everConnected) {\r\n            if (conn === _this.conn_) {\r\n                _this.onConnectionLost_(everConnected);\r\n            }\r\n            else if (conn === _this.secondaryConn_) {\r\n                _this.log_('Secondary connection lost.');\r\n                _this.onSecondaryConnectionLost_();\r\n            }\r\n            else {\r\n                _this.log_('closing an old connection');\r\n            }\r\n        };\r\n    };\r\n    Connection.prototype.connReceiver_ = function (conn) {\r\n        var _this = this;\r\n        return function (message) {\r\n            if (_this.state_ != 2 /* DISCONNECTED */) {\r\n                if (conn === _this.rx_) {\r\n                    _this.onPrimaryMessageReceived_(message);\r\n                }\r\n                else if (conn === _this.secondaryConn_) {\r\n                    _this.onSecondaryMessageReceived_(message);\r\n                }\r\n                else {\r\n                    _this.log_('message on old connection');\r\n                }\r\n            }\r\n        };\r\n    };\r\n    /**\r\n     *\r\n     * @param {Object} dataMsg An arbitrary data message to be sent to the server\r\n     */\r\n    Connection.prototype.sendRequest = function (dataMsg) {\r\n        // wrap in a data message envelope and send it on\r\n        var msg = { t: 'd', d: dataMsg };\r\n        this.sendData_(msg);\r\n    };\r\n    Connection.prototype.tryCleanupConnection = function () {\r\n        if (this.tx_ === this.secondaryConn_ && this.rx_ === this.secondaryConn_) {\r\n            this.log_('cleaning up and promoting a connection: ' + this.secondaryConn_.connId);\r\n            this.conn_ = this.secondaryConn_;\r\n            this.secondaryConn_ = null;\r\n            // the server will shutdown the old connection\r\n        }\r\n    };\r\n    Connection.prototype.onSecondaryControl_ = function (controlData) {\r\n        if (MESSAGE_TYPE in controlData) {\r\n            var cmd = controlData[MESSAGE_TYPE];\r\n            if (cmd === SWITCH_ACK) {\r\n                this.upgradeIfSecondaryHealthy_();\r\n            }\r\n            else if (cmd === CONTROL_RESET) {\r\n                // Most likely the session wasn't valid. Abandon the switch attempt\r\n                this.log_('Got a reset on secondary, closing it');\r\n                this.secondaryConn_.close();\r\n                // If we were already using this connection for something, than we need to fully close\r\n                if (this.tx_ === this.secondaryConn_ ||\r\n                    this.rx_ === this.secondaryConn_) {\r\n                    this.close();\r\n                }\r\n            }\r\n            else if (cmd === CONTROL_PONG) {\r\n                this.log_('got pong on secondary.');\r\n                this.secondaryResponsesRequired_--;\r\n                this.upgradeIfSecondaryHealthy_();\r\n            }\r\n        }\r\n    };\r\n    Connection.prototype.onSecondaryMessageReceived_ = function (parsedData) {\r\n        var layer = requireKey('t', parsedData);\r\n        var data = requireKey('d', parsedData);\r\n        if (layer == 'c') {\r\n            this.onSecondaryControl_(data);\r\n        }\r\n        else if (layer == 'd') {\r\n            // got a data message, but we're still second connection. Need to buffer it up\r\n            this.pendingDataMessages.push(data);\r\n        }\r\n        else {\r\n            throw new Error('Unknown protocol layer: ' + layer);\r\n        }\r\n    };\r\n    Connection.prototype.upgradeIfSecondaryHealthy_ = function () {\r\n        if (this.secondaryResponsesRequired_ <= 0) {\r\n            this.log_('Secondary connection is healthy.');\r\n            this.isHealthy_ = true;\r\n            this.secondaryConn_.markConnectionHealthy();\r\n            this.proceedWithUpgrade_();\r\n        }\r\n        else {\r\n            // Send a ping to make sure the connection is healthy.\r\n            this.log_('sending ping on secondary.');\r\n            this.secondaryConn_.send({ t: 'c', d: { t: PING, d: {} } });\r\n        }\r\n    };\r\n    Connection.prototype.proceedWithUpgrade_ = function () {\r\n        // tell this connection to consider itself open\r\n        this.secondaryConn_.start();\r\n        // send ack\r\n        this.log_('sending client ack on secondary');\r\n        this.secondaryConn_.send({ t: 'c', d: { t: SWITCH_ACK, d: {} } });\r\n        // send end packet on primary transport, switch to sending on this one\r\n        // can receive on this one, buffer responses until end received on primary transport\r\n        this.log_('Ending transmission on primary');\r\n        this.conn_.send({ t: 'c', d: { t: END_TRANSMISSION, d: {} } });\r\n        this.tx_ = this.secondaryConn_;\r\n        this.tryCleanupConnection();\r\n    };\r\n    Connection.prototype.onPrimaryMessageReceived_ = function (parsedData) {\r\n        // Must refer to parsedData properties in quotes, so closure doesn't touch them.\r\n        var layer = requireKey('t', parsedData);\r\n        var data = requireKey('d', parsedData);\r\n        if (layer == 'c') {\r\n            this.onControl_(data);\r\n        }\r\n        else if (layer == 'd') {\r\n            this.onDataMessage_(data);\r\n        }\r\n    };\r\n    Connection.prototype.onDataMessage_ = function (message) {\r\n        this.onPrimaryResponse_();\r\n        // We don't do anything with data messages, just kick them up a level\r\n        this.onMessage_(message);\r\n    };\r\n    Connection.prototype.onPrimaryResponse_ = function () {\r\n        if (!this.isHealthy_) {\r\n            this.primaryResponsesRequired_--;\r\n            if (this.primaryResponsesRequired_ <= 0) {\r\n                this.log_('Primary connection is healthy.');\r\n                this.isHealthy_ = true;\r\n                this.conn_.markConnectionHealthy();\r\n            }\r\n        }\r\n    };\r\n    Connection.prototype.onControl_ = function (controlData) {\r\n        var cmd = requireKey(MESSAGE_TYPE, controlData);\r\n        if (MESSAGE_DATA in controlData) {\r\n            var payload = controlData[MESSAGE_DATA];\r\n            if (cmd === SERVER_HELLO) {\r\n                this.onHandshake_(payload);\r\n            }\r\n            else if (cmd === END_TRANSMISSION) {\r\n                this.log_('recvd end transmission on primary');\r\n                this.rx_ = this.secondaryConn_;\r\n                for (var i = 0; i < this.pendingDataMessages.length; ++i) {\r\n                    this.onDataMessage_(this.pendingDataMessages[i]);\r\n                }\r\n                this.pendingDataMessages = [];\r\n                this.tryCleanupConnection();\r\n            }\r\n            else if (cmd === CONTROL_SHUTDOWN) {\r\n                // This was previously the 'onKill' callback passed to the lower-level connection\r\n                // payload in this case is the reason for the shutdown. Generally a human-readable error\r\n                this.onConnectionShutdown_(payload);\r\n            }\r\n            else if (cmd === CONTROL_RESET) {\r\n                // payload in this case is the host we should contact\r\n                this.onReset_(payload);\r\n            }\r\n            else if (cmd === CONTROL_ERROR) {\r\n                error('Server Error: ' + payload);\r\n            }\r\n            else if (cmd === CONTROL_PONG) {\r\n                this.log_('got pong on primary.');\r\n                this.onPrimaryResponse_();\r\n                this.sendPingOnPrimaryIfNecessary_();\r\n            }\r\n            else {\r\n                error('Unknown control packet command: ' + cmd);\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     *\r\n     * @param {Object} handshake The handshake data returned from the server\r\n     * @private\r\n     */\r\n    Connection.prototype.onHandshake_ = function (handshake) {\r\n        var timestamp = handshake.ts;\r\n        var version = handshake.v;\r\n        var host = handshake.h;\r\n        this.sessionId = handshake.s;\r\n        this.repoInfo_.updateHost(host);\r\n        // if we've already closed the connection, then don't bother trying to progress further\r\n        if (this.state_ == 0 /* CONNECTING */) {\r\n            this.conn_.start();\r\n            this.onConnectionEstablished_(this.conn_, timestamp);\r\n            if (PROTOCOL_VERSION !== version) {\r\n                warn('Protocol version mismatch detected');\r\n            }\r\n            // TODO: do we want to upgrade? when? maybe a delay?\r\n            this.tryStartUpgrade_();\r\n        }\r\n    };\r\n    Connection.prototype.tryStartUpgrade_ = function () {\r\n        var conn = this.transportManager_.upgradeTransport();\r\n        if (conn) {\r\n            this.startUpgrade_(conn);\r\n        }\r\n    };\r\n    Connection.prototype.startUpgrade_ = function (conn) {\r\n        var _this = this;\r\n        this.secondaryConn_ = new conn(this.nextTransportId_(), this.repoInfo_, this.sessionId);\r\n        // For certain transports (WebSockets), we need to send and receive several messages back and forth before we\r\n        // can consider the transport healthy.\r\n        this.secondaryResponsesRequired_ =\r\n            conn['responsesRequiredToBeHealthy'] || 0;\r\n        var onMessage = this.connReceiver_(this.secondaryConn_);\r\n        var onDisconnect = this.disconnReceiver_(this.secondaryConn_);\r\n        this.secondaryConn_.open(onMessage, onDisconnect);\r\n        // If we haven't successfully upgraded after UPGRADE_TIMEOUT, give up and kill the secondary.\r\n        setTimeoutNonBlocking(function () {\r\n            if (_this.secondaryConn_) {\r\n                _this.log_('Timed out trying to upgrade.');\r\n                _this.secondaryConn_.close();\r\n            }\r\n        }, Math.floor(UPGRADE_TIMEOUT));\r\n    };\r\n    Connection.prototype.onReset_ = function (host) {\r\n        this.log_('Reset packet received.  New host: ' + host);\r\n        this.repoInfo_.updateHost(host);\r\n        // TODO: if we're already \"connected\", we need to trigger a disconnect at the next layer up.\r\n        // We don't currently support resets after the connection has already been established\r\n        if (this.state_ === 1 /* CONNECTED */) {\r\n            this.close();\r\n        }\r\n        else {\r\n            // Close whatever connections we have open and start again.\r\n            this.closeConnections_();\r\n            this.start_();\r\n        }\r\n    };\r\n    Connection.prototype.onConnectionEstablished_ = function (conn, timestamp) {\r\n        var _this = this;\r\n        this.log_('Realtime connection established.');\r\n        this.conn_ = conn;\r\n        this.state_ = 1 /* CONNECTED */;\r\n        if (this.onReady_) {\r\n            this.onReady_(timestamp, this.sessionId);\r\n            this.onReady_ = null;\r\n        }\r\n        // If after 5 seconds we haven't sent enough requests to the server to get the connection healthy,\r\n        // send some pings.\r\n        if (this.primaryResponsesRequired_ === 0) {\r\n            this.log_('Primary connection is healthy.');\r\n            this.isHealthy_ = true;\r\n        }\r\n        else {\r\n            setTimeoutNonBlocking(function () {\r\n                _this.sendPingOnPrimaryIfNecessary_();\r\n            }, Math.floor(DELAY_BEFORE_SENDING_EXTRA_REQUESTS));\r\n        }\r\n    };\r\n    Connection.prototype.sendPingOnPrimaryIfNecessary_ = function () {\r\n        // If the connection isn't considered healthy yet, we'll send a noop ping packet request.\r\n        if (!this.isHealthy_ && this.state_ === 1 /* CONNECTED */) {\r\n            this.log_('sending ping on primary.');\r\n            this.sendData_({ t: 'c', d: { t: PING, d: {} } });\r\n        }\r\n    };\r\n    Connection.prototype.onSecondaryConnectionLost_ = function () {\r\n        var conn = this.secondaryConn_;\r\n        this.secondaryConn_ = null;\r\n        if (this.tx_ === conn || this.rx_ === conn) {\r\n            // we are relying on this connection already in some capacity. Therefore, a failure is real\r\n            this.close();\r\n        }\r\n    };\r\n    /**\r\n     *\r\n     * @param {boolean} everConnected Whether or not the connection ever reached a server. Used to determine if\r\n     * we should flush the host cache\r\n     * @private\r\n     */\r\n    Connection.prototype.onConnectionLost_ = function (everConnected) {\r\n        this.conn_ = null;\r\n        // NOTE: IF you're seeing a Firefox error for this line, I think it might be because it's getting\r\n        // called on window close and RealtimeState.CONNECTING is no longer defined.  Just a guess.\r\n        if (!everConnected && this.state_ === 0 /* CONNECTING */) {\r\n            this.log_('Realtime connection failed.');\r\n            // Since we failed to connect at all, clear any cached entry for this namespace in case the machine went away\r\n            if (this.repoInfo_.isCacheableHost()) {\r\n                PersistentStorage.remove('host:' + this.repoInfo_.host);\r\n                // reset the internal host to what we would show the user, i.e. <ns>.firebaseio.com\r\n                this.repoInfo_.internalHost = this.repoInfo_.host;\r\n            }\r\n        }\r\n        else if (this.state_ === 1 /* CONNECTED */) {\r\n            this.log_('Realtime connection lost.');\r\n        }\r\n        this.close();\r\n    };\r\n    /**\r\n     *\r\n     * @param {string} reason\r\n     * @private\r\n     */\r\n    Connection.prototype.onConnectionShutdown_ = function (reason) {\r\n        this.log_('Connection shutdown command received. Shutting down...');\r\n        if (this.onKill_) {\r\n            this.onKill_(reason);\r\n            this.onKill_ = null;\r\n        }\r\n        // We intentionally don't want to fire onDisconnect (kill is a different case),\r\n        // so clear the callback.\r\n        this.onDisconnect_ = null;\r\n        this.close();\r\n    };\r\n    Connection.prototype.sendData_ = function (data) {\r\n        if (this.state_ !== 1 /* CONNECTED */) {\r\n            throw 'Connection is not connected';\r\n        }\r\n        else {\r\n            this.tx_.send(data);\r\n        }\r\n    };\r\n    /**\r\n     * Cleans up this connection, calling the appropriate callbacks\r\n     */\r\n    Connection.prototype.close = function () {\r\n        if (this.state_ !== 2 /* DISCONNECTED */) {\r\n            this.log_('Closing realtime connection.');\r\n            this.state_ = 2 /* DISCONNECTED */;\r\n            this.closeConnections_();\r\n            if (this.onDisconnect_) {\r\n                this.onDisconnect_();\r\n                this.onDisconnect_ = null;\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     *\r\n     * @private\r\n     */\r\n    Connection.prototype.closeConnections_ = function () {\r\n        this.log_('Shutting down all connections');\r\n        if (this.conn_) {\r\n            this.conn_.close();\r\n            this.conn_ = null;\r\n        }\r\n        if (this.secondaryConn_) {\r\n            this.secondaryConn_.close();\r\n            this.secondaryConn_ = null;\r\n        }\r\n        if (this.healthyTimeout_) {\r\n            clearTimeout(this.healthyTimeout_);\r\n            this.healthyTimeout_ = null;\r\n        }\r\n    };\r\n    return Connection;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Interface defining the set of actions that can be performed against the Firebase server\r\n * (basically corresponds to our wire protocol).\r\n *\r\n * @interface\r\n */\r\nvar ServerActions = /** @class */ (function () {\r\n    function ServerActions() {\r\n    }\r\n    /**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, string)=} onComplete\r\n     * @param {string=} hash\r\n     */\r\n    ServerActions.prototype.put = function (pathString, data, onComplete, hash) { };\r\n    /**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, ?string)} onComplete\r\n     * @param {string=} hash\r\n     */\r\n    ServerActions.prototype.merge = function (pathString, data, onComplete, hash) { };\r\n    /**\r\n     * Refreshes the auth token for the current connection.\r\n     * @param {string} token The authentication token\r\n     */\r\n    ServerActions.prototype.refreshAuthToken = function (token) { };\r\n    /**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, string)=} onComplete\r\n     */\r\n    ServerActions.prototype.onDisconnectPut = function (pathString, data, onComplete) { };\r\n    /**\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {function(string, string)=} onComplete\r\n     */\r\n    ServerActions.prototype.onDisconnectMerge = function (pathString, data, onComplete) { };\r\n    /**\r\n     * @param {string} pathString\r\n     * @param {function(string, string)=} onComplete\r\n     */\r\n    ServerActions.prototype.onDisconnectCancel = function (pathString, onComplete) { };\r\n    /**\r\n     * @param {Object.<string, *>} stats\r\n     */\r\n    ServerActions.prototype.reportStats = function (stats) { };\r\n    return ServerActions;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar RECONNECT_MIN_DELAY = 1000;\r\nvar RECONNECT_MAX_DELAY_DEFAULT = 60 * 5 * 1000; // 5 minutes in milliseconds (Case: 1858)\r\nvar RECONNECT_MAX_DELAY_FOR_ADMINS = 30 * 1000; // 30 seconds for admin clients (likely to be a backend server)\r\nvar RECONNECT_DELAY_MULTIPLIER = 1.3;\r\nvar RECONNECT_DELAY_RESET_TIMEOUT = 30000; // Reset delay back to MIN_DELAY after being connected for 30sec.\r\nvar SERVER_KILL_INTERRUPT_REASON = 'server_kill';\r\n// If auth fails repeatedly, we'll assume something is wrong and log a warning / back off.\r\nvar INVALID_AUTH_TOKEN_THRESHOLD = 3;\r\n/**\r\n * Firebase connection.  Abstracts wire protocol and handles reconnecting.\r\n *\r\n * NOTE: All JSON objects sent to the realtime connection must have property names enclosed\r\n * in quotes to make sure the closure compiler does not minify them.\r\n */\r\nvar PersistentConnection = /** @class */ (function (_super) {\r\n    tslib_1.__extends(PersistentConnection, _super);\r\n    /**\r\n     * @implements {ServerActions}\r\n     * @param {!RepoInfo} repoInfo_ Data about the namespace we are connecting to\r\n     * @param {function(string, *, boolean, ?number)} onDataUpdate_ A callback for new data from the server\r\n     * @param onConnectStatus_\r\n     * @param onServerInfoUpdate_\r\n     * @param authTokenProvider_\r\n     * @param authOverride_\r\n     */\r\n    function PersistentConnection(repoInfo_, onDataUpdate_, onConnectStatus_, onServerInfoUpdate_, authTokenProvider_, authOverride_) {\r\n        var _this = _super.call(this) || this;\r\n        _this.repoInfo_ = repoInfo_;\r\n        _this.onDataUpdate_ = onDataUpdate_;\r\n        _this.onConnectStatus_ = onConnectStatus_;\r\n        _this.onServerInfoUpdate_ = onServerInfoUpdate_;\r\n        _this.authTokenProvider_ = authTokenProvider_;\r\n        _this.authOverride_ = authOverride_;\r\n        // Used for diagnostic logging.\r\n        _this.id = PersistentConnection.nextPersistentConnectionId_++;\r\n        _this.log_ = logWrapper('p:' + _this.id + ':');\r\n        /** @private {Object} */\r\n        _this.interruptReasons_ = {};\r\n        _this.listens_ = {};\r\n        _this.outstandingPuts_ = [];\r\n        _this.outstandingPutCount_ = 0;\r\n        _this.onDisconnectRequestQueue_ = [];\r\n        _this.connected_ = false;\r\n        _this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n        _this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_DEFAULT;\r\n        _this.securityDebugCallback_ = null;\r\n        _this.lastSessionId = null;\r\n        /** @private {number|null} */\r\n        _this.establishConnectionTimer_ = null;\r\n        /** @private {boolean} */\r\n        _this.visible_ = false;\r\n        // Before we get connected, we keep a queue of pending messages to send.\r\n        _this.requestCBHash_ = {};\r\n        _this.requestNumber_ = 0;\r\n        /** @private {?{\r\n         *   sendRequest(Object),\r\n         *   close()\r\n         * }} */\r\n        _this.realtime_ = null;\r\n        /** @private {string|null} */\r\n        _this.authToken_ = null;\r\n        _this.forceTokenRefresh_ = false;\r\n        _this.invalidAuthTokenCount_ = 0;\r\n        _this.firstConnection_ = true;\r\n        _this.lastConnectionAttemptTime_ = null;\r\n        _this.lastConnectionEstablishedTime_ = null;\r\n        if (authOverride_ && !util.isNodeSdk()) {\r\n            throw new Error('Auth override specified in options, but not supported on non Node.js platforms');\r\n        }\r\n        _this.scheduleConnect_(0);\r\n        VisibilityMonitor.getInstance().on('visible', _this.onVisible_, _this);\r\n        if (repoInfo_.host.indexOf('fblocal') === -1) {\r\n            OnlineMonitor.getInstance().on('online', _this.onOnline_, _this);\r\n        }\r\n        return _this;\r\n    }\r\n    /**\r\n     * @param {!string} action\r\n     * @param {*} body\r\n     * @param {function(*)=} onResponse\r\n     * @protected\r\n     */\r\n    PersistentConnection.prototype.sendRequest = function (action, body, onResponse) {\r\n        var curReqNum = ++this.requestNumber_;\r\n        var msg = { r: curReqNum, a: action, b: body };\r\n        this.log_(util.stringify(msg));\r\n        util.assert(this.connected_, \"sendRequest call when we're not connected not allowed.\");\r\n        this.realtime_.sendRequest(msg);\r\n        if (onResponse) {\r\n            this.requestCBHash_[curReqNum] = onResponse;\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.listen = function (query, currentHashFn, tag, onComplete) {\r\n        var queryId = query.queryIdentifier();\r\n        var pathString = query.path.toString();\r\n        this.log_('Listen called for ' + pathString + ' ' + queryId);\r\n        this.listens_[pathString] = this.listens_[pathString] || {};\r\n        util.assert(query.getQueryParams().isDefault() ||\r\n            !query.getQueryParams().loadsAllData(), 'listen() called for non-default but complete query');\r\n        util.assert(!this.listens_[pathString][queryId], 'listen() called twice for same path/queryId.');\r\n        var listenSpec = {\r\n            onComplete: onComplete,\r\n            hashFn: currentHashFn,\r\n            query: query,\r\n            tag: tag\r\n        };\r\n        this.listens_[pathString][queryId] = listenSpec;\r\n        if (this.connected_) {\r\n            this.sendListen_(listenSpec);\r\n        }\r\n    };\r\n    /**\r\n     * @param {!{onComplete(),\r\n     *           hashFn():!string,\r\n     *           query: !Query,\r\n     *           tag: ?number}} listenSpec\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.sendListen_ = function (listenSpec) {\r\n        var _this = this;\r\n        var query = listenSpec.query;\r\n        var pathString = query.path.toString();\r\n        var queryId = query.queryIdentifier();\r\n        this.log_('Listen on ' + pathString + ' for ' + queryId);\r\n        var req = { /*path*/ p: pathString };\r\n        var action = 'q';\r\n        // Only bother to send query if it's non-default.\r\n        if (listenSpec.tag) {\r\n            req['q'] = query.queryObject();\r\n            req['t'] = listenSpec.tag;\r\n        }\r\n        req[ /*hash*/'h'] = listenSpec.hashFn();\r\n        this.sendRequest(action, req, function (message) {\r\n            var payload = message[ /*data*/'d'];\r\n            var status = message[ /*status*/'s'];\r\n            // print warnings in any case...\r\n            PersistentConnection.warnOnListenWarnings_(payload, query);\r\n            var currentListenSpec = _this.listens_[pathString] && _this.listens_[pathString][queryId];\r\n            // only trigger actions if the listen hasn't been removed and readded\r\n            if (currentListenSpec === listenSpec) {\r\n                _this.log_('listen response', message);\r\n                if (status !== 'ok') {\r\n                    _this.removeListen_(pathString, queryId);\r\n                }\r\n                if (listenSpec.onComplete) {\r\n                    listenSpec.onComplete(status, payload);\r\n                }\r\n            }\r\n        });\r\n    };\r\n    /**\r\n     * @param {*} payload\r\n     * @param {!Query} query\r\n     * @private\r\n     */\r\n    PersistentConnection.warnOnListenWarnings_ = function (payload, query) {\r\n        if (payload && typeof payload === 'object' && util.contains(payload, 'w')) {\r\n            var warnings = util.safeGet(payload, 'w');\r\n            if (Array.isArray(warnings) && ~warnings.indexOf('no_index')) {\r\n                var indexSpec = '\".indexOn\": \"' +\r\n                    query\r\n                        .getQueryParams()\r\n                        .getIndex()\r\n                        .toString() +\r\n                    '\"';\r\n                var indexPath = query.path.toString();\r\n                warn(\"Using an unspecified index. Your data will be downloaded and \" +\r\n                    (\"filtered on the client. Consider adding \" + indexSpec + \" at \") +\r\n                    (indexPath + \" to your security rules for better performance.\"));\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.refreshAuthToken = function (token) {\r\n        this.authToken_ = token;\r\n        this.log_('Auth token refreshed');\r\n        if (this.authToken_) {\r\n            this.tryAuth();\r\n        }\r\n        else {\r\n            //If we're connected we want to let the server know to unauthenticate us. If we're not connected, simply delete\r\n            //the credential so we dont become authenticated next time we connect.\r\n            if (this.connected_) {\r\n                this.sendRequest('unauth', {}, function () { });\r\n            }\r\n        }\r\n        this.reduceReconnectDelayIfAdminCredential_(token);\r\n    };\r\n    /**\r\n     * @param {!string} credential\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.reduceReconnectDelayIfAdminCredential_ = function (credential) {\r\n        // NOTE: This isn't intended to be bulletproof (a malicious developer can always just modify the client).\r\n        // Additionally, we don't bother resetting the max delay back to the default if auth fails / expires.\r\n        var isFirebaseSecret = credential && credential.length === 40;\r\n        if (isFirebaseSecret || util.isAdmin(credential)) {\r\n            this.log_('Admin auth credential detected.  Reducing max reconnect time.');\r\n            this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;\r\n        }\r\n    };\r\n    /**\r\n     * Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like\r\n     * a auth revoked (the connection is closed).\r\n     */\r\n    PersistentConnection.prototype.tryAuth = function () {\r\n        var _this = this;\r\n        if (this.connected_ && this.authToken_) {\r\n            var token_1 = this.authToken_;\r\n            var authMethod = util.isValidFormat(token_1) ? 'auth' : 'gauth';\r\n            var requestData = { cred: token_1 };\r\n            if (this.authOverride_ === null) {\r\n                requestData['noauth'] = true;\r\n            }\r\n            else if (typeof this.authOverride_ === 'object') {\r\n                requestData['authvar'] = this.authOverride_;\r\n            }\r\n            this.sendRequest(authMethod, requestData, function (res) {\r\n                var status = res[ /*status*/'s'];\r\n                var data = res[ /*data*/'d'] || 'error';\r\n                if (_this.authToken_ === token_1) {\r\n                    if (status === 'ok') {\r\n                        _this.invalidAuthTokenCount_ = 0;\r\n                    }\r\n                    else {\r\n                        // Triggers reconnect and force refresh for auth token\r\n                        _this.onAuthRevoked_(status, data);\r\n                    }\r\n                }\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.unlisten = function (query, tag) {\r\n        var pathString = query.path.toString();\r\n        var queryId = query.queryIdentifier();\r\n        this.log_('Unlisten called for ' + pathString + ' ' + queryId);\r\n        util.assert(query.getQueryParams().isDefault() ||\r\n            !query.getQueryParams().loadsAllData(), 'unlisten() called for non-default but complete query');\r\n        var listen = this.removeListen_(pathString, queryId);\r\n        if (listen && this.connected_) {\r\n            this.sendUnlisten_(pathString, queryId, query.queryObject(), tag);\r\n        }\r\n    };\r\n    PersistentConnection.prototype.sendUnlisten_ = function (pathString, queryId, queryObj, tag) {\r\n        this.log_('Unlisten on ' + pathString + ' for ' + queryId);\r\n        var req = { /*path*/ p: pathString };\r\n        var action = 'n';\r\n        // Only bother sending queryId if it's non-default.\r\n        if (tag) {\r\n            req['q'] = queryObj;\r\n            req['t'] = tag;\r\n        }\r\n        this.sendRequest(action, req);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.onDisconnectPut = function (pathString, data, onComplete) {\r\n        if (this.connected_) {\r\n            this.sendOnDisconnect_('o', pathString, data, onComplete);\r\n        }\r\n        else {\r\n            this.onDisconnectRequestQueue_.push({\r\n                pathString: pathString,\r\n                action: 'o',\r\n                data: data,\r\n                onComplete: onComplete\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.onDisconnectMerge = function (pathString, data, onComplete) {\r\n        if (this.connected_) {\r\n            this.sendOnDisconnect_('om', pathString, data, onComplete);\r\n        }\r\n        else {\r\n            this.onDisconnectRequestQueue_.push({\r\n                pathString: pathString,\r\n                action: 'om',\r\n                data: data,\r\n                onComplete: onComplete\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.onDisconnectCancel = function (pathString, onComplete) {\r\n        if (this.connected_) {\r\n            this.sendOnDisconnect_('oc', pathString, null, onComplete);\r\n        }\r\n        else {\r\n            this.onDisconnectRequestQueue_.push({\r\n                pathString: pathString,\r\n                action: 'oc',\r\n                data: null,\r\n                onComplete: onComplete\r\n            });\r\n        }\r\n    };\r\n    PersistentConnection.prototype.sendOnDisconnect_ = function (action, pathString, data, onComplete) {\r\n        var request = { /*path*/ p: pathString, /*data*/ d: data };\r\n        this.log_('onDisconnect ' + action, request);\r\n        this.sendRequest(action, request, function (response) {\r\n            if (onComplete) {\r\n                setTimeout(function () {\r\n                    onComplete(response[ /*status*/'s'], response[ /* data */'d']);\r\n                }, Math.floor(0));\r\n            }\r\n        });\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.put = function (pathString, data, onComplete, hash) {\r\n        this.putInternal('p', pathString, data, onComplete, hash);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.merge = function (pathString, data, onComplete, hash) {\r\n        this.putInternal('m', pathString, data, onComplete, hash);\r\n    };\r\n    PersistentConnection.prototype.putInternal = function (action, pathString, data, onComplete, hash) {\r\n        var request = {\r\n            /*path*/ p: pathString,\r\n            /*data*/ d: data\r\n        };\r\n        if (hash !== undefined)\r\n            request[ /*hash*/'h'] = hash;\r\n        // TODO: Only keep track of the most recent put for a given path?\r\n        this.outstandingPuts_.push({\r\n            action: action,\r\n            request: request,\r\n            onComplete: onComplete\r\n        });\r\n        this.outstandingPutCount_++;\r\n        var index = this.outstandingPuts_.length - 1;\r\n        if (this.connected_) {\r\n            this.sendPut_(index);\r\n        }\r\n        else {\r\n            this.log_('Buffering put: ' + pathString);\r\n        }\r\n    };\r\n    PersistentConnection.prototype.sendPut_ = function (index) {\r\n        var _this = this;\r\n        var action = this.outstandingPuts_[index].action;\r\n        var request = this.outstandingPuts_[index].request;\r\n        var onComplete = this.outstandingPuts_[index].onComplete;\r\n        this.outstandingPuts_[index].queued = this.connected_;\r\n        this.sendRequest(action, request, function (message) {\r\n            _this.log_(action + ' response', message);\r\n            delete _this.outstandingPuts_[index];\r\n            _this.outstandingPutCount_--;\r\n            // Clean up array occasionally.\r\n            if (_this.outstandingPutCount_ === 0) {\r\n                _this.outstandingPuts_ = [];\r\n            }\r\n            if (onComplete)\r\n                onComplete(message[ /*status*/'s'], message[ /* data */'d']);\r\n        });\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    PersistentConnection.prototype.reportStats = function (stats) {\r\n        var _this = this;\r\n        // If we're not connected, we just drop the stats.\r\n        if (this.connected_) {\r\n            var request = { /*counters*/ c: stats };\r\n            this.log_('reportStats', request);\r\n            this.sendRequest(/*stats*/ 's', request, function (result) {\r\n                var status = result[ /*status*/'s'];\r\n                if (status !== 'ok') {\r\n                    var errorReason = result[ /* data */'d'];\r\n                    _this.log_('reportStats', 'Error sending stats: ' + errorReason);\r\n                }\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * @param {*} message\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.onDataMessage_ = function (message) {\r\n        if ('r' in message) {\r\n            // this is a response\r\n            this.log_('from server: ' + util.stringify(message));\r\n            var reqNum = message['r'];\r\n            var onResponse = this.requestCBHash_[reqNum];\r\n            if (onResponse) {\r\n                delete this.requestCBHash_[reqNum];\r\n                onResponse(message[ /*body*/'b']);\r\n            }\r\n        }\r\n        else if ('error' in message) {\r\n            throw 'A server-side error has occurred: ' + message['error'];\r\n        }\r\n        else if ('a' in message) {\r\n            // a and b are action and body, respectively\r\n            this.onDataPush_(message['a'], message['b']);\r\n        }\r\n    };\r\n    PersistentConnection.prototype.onDataPush_ = function (action, body) {\r\n        this.log_('handleServerMessage', action, body);\r\n        if (action === 'd')\r\n            this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'], \r\n            /*isMerge*/ false, body['t']);\r\n        else if (action === 'm')\r\n            this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'], \r\n            /*isMerge=*/ true, body['t']);\r\n        else if (action === 'c')\r\n            this.onListenRevoked_(body[ /*path*/'p'], body[ /*query*/'q']);\r\n        else if (action === 'ac')\r\n            this.onAuthRevoked_(body[ /*status code*/'s'], body[ /* explanation */'d']);\r\n        else if (action === 'sd')\r\n            this.onSecurityDebugPacket_(body);\r\n        else\r\n            error('Unrecognized action received from server: ' +\r\n                util.stringify(action) +\r\n                '\\nAre you using the latest client?');\r\n    };\r\n    PersistentConnection.prototype.onReady_ = function (timestamp, sessionId) {\r\n        this.log_('connection ready');\r\n        this.connected_ = true;\r\n        this.lastConnectionEstablishedTime_ = new Date().getTime();\r\n        this.handleTimestamp_(timestamp);\r\n        this.lastSessionId = sessionId;\r\n        if (this.firstConnection_) {\r\n            this.sendConnectStats_();\r\n        }\r\n        this.restoreState_();\r\n        this.firstConnection_ = false;\r\n        this.onConnectStatus_(true);\r\n    };\r\n    PersistentConnection.prototype.scheduleConnect_ = function (timeout) {\r\n        var _this = this;\r\n        util.assert(!this.realtime_, \"Scheduling a connect when we're already connected/ing?\");\r\n        if (this.establishConnectionTimer_) {\r\n            clearTimeout(this.establishConnectionTimer_);\r\n        }\r\n        // NOTE: Even when timeout is 0, it's important to do a setTimeout to work around an infuriating \"Security Error\" in\r\n        // Firefox when trying to write to our long-polling iframe in some scenarios (e.g. Forge or our unit tests).\r\n        this.establishConnectionTimer_ = setTimeout(function () {\r\n            _this.establishConnectionTimer_ = null;\r\n            _this.establishConnection_();\r\n        }, Math.floor(timeout));\r\n    };\r\n    /**\r\n     * @param {boolean} visible\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.onVisible_ = function (visible) {\r\n        // NOTE: Tabbing away and back to a window will defeat our reconnect backoff, but I think that's fine.\r\n        if (visible &&\r\n            !this.visible_ &&\r\n            this.reconnectDelay_ === this.maxReconnectDelay_) {\r\n            this.log_('Window became visible.  Reducing delay.');\r\n            this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n            if (!this.realtime_) {\r\n                this.scheduleConnect_(0);\r\n            }\r\n        }\r\n        this.visible_ = visible;\r\n    };\r\n    PersistentConnection.prototype.onOnline_ = function (online) {\r\n        if (online) {\r\n            this.log_('Browser went online.');\r\n            this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n            if (!this.realtime_) {\r\n                this.scheduleConnect_(0);\r\n            }\r\n        }\r\n        else {\r\n            this.log_('Browser went offline.  Killing connection.');\r\n            if (this.realtime_) {\r\n                this.realtime_.close();\r\n            }\r\n        }\r\n    };\r\n    PersistentConnection.prototype.onRealtimeDisconnect_ = function () {\r\n        this.log_('data client disconnected');\r\n        this.connected_ = false;\r\n        this.realtime_ = null;\r\n        // Since we don't know if our sent transactions succeeded or not, we need to cancel them.\r\n        this.cancelSentTransactions_();\r\n        // Clear out the pending requests.\r\n        this.requestCBHash_ = {};\r\n        if (this.shouldReconnect_()) {\r\n            if (!this.visible_) {\r\n                this.log_(\"Window isn't visible.  Delaying reconnect.\");\r\n                this.reconnectDelay_ = this.maxReconnectDelay_;\r\n                this.lastConnectionAttemptTime_ = new Date().getTime();\r\n            }\r\n            else if (this.lastConnectionEstablishedTime_) {\r\n                // If we've been connected long enough, reset reconnect delay to minimum.\r\n                var timeSinceLastConnectSucceeded = new Date().getTime() - this.lastConnectionEstablishedTime_;\r\n                if (timeSinceLastConnectSucceeded > RECONNECT_DELAY_RESET_TIMEOUT)\r\n                    this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n                this.lastConnectionEstablishedTime_ = null;\r\n            }\r\n            var timeSinceLastConnectAttempt = new Date().getTime() - this.lastConnectionAttemptTime_;\r\n            var reconnectDelay = Math.max(0, this.reconnectDelay_ - timeSinceLastConnectAttempt);\r\n            reconnectDelay = Math.random() * reconnectDelay;\r\n            this.log_('Trying to reconnect in ' + reconnectDelay + 'ms');\r\n            this.scheduleConnect_(reconnectDelay);\r\n            // Adjust reconnect delay for next time.\r\n            this.reconnectDelay_ = Math.min(this.maxReconnectDelay_, this.reconnectDelay_ * RECONNECT_DELAY_MULTIPLIER);\r\n        }\r\n        this.onConnectStatus_(false);\r\n    };\r\n    PersistentConnection.prototype.establishConnection_ = function () {\r\n        if (this.shouldReconnect_()) {\r\n            this.log_('Making a connection attempt');\r\n            this.lastConnectionAttemptTime_ = new Date().getTime();\r\n            this.lastConnectionEstablishedTime_ = null;\r\n            var onDataMessage_1 = this.onDataMessage_.bind(this);\r\n            var onReady_1 = this.onReady_.bind(this);\r\n            var onDisconnect_1 = this.onRealtimeDisconnect_.bind(this);\r\n            var connId_1 = this.id + ':' + PersistentConnection.nextConnectionId_++;\r\n            var self_1 = this;\r\n            var lastSessionId_1 = this.lastSessionId;\r\n            var canceled_1 = false;\r\n            var connection_1 = null;\r\n            var closeFn_1 = function () {\r\n                if (connection_1) {\r\n                    connection_1.close();\r\n                }\r\n                else {\r\n                    canceled_1 = true;\r\n                    onDisconnect_1();\r\n                }\r\n            };\r\n            var sendRequestFn = function (msg) {\r\n                util.assert(connection_1, \"sendRequest call when we're not connected not allowed.\");\r\n                connection_1.sendRequest(msg);\r\n            };\r\n            this.realtime_ = {\r\n                close: closeFn_1,\r\n                sendRequest: sendRequestFn\r\n            };\r\n            var forceRefresh = this.forceTokenRefresh_;\r\n            this.forceTokenRefresh_ = false;\r\n            // First fetch auth token, and establish connection after fetching the token was successful\r\n            this.authTokenProvider_\r\n                .getToken(forceRefresh)\r\n                .then(function (result) {\r\n                if (!canceled_1) {\r\n                    log('getToken() completed. Creating connection.');\r\n                    self_1.authToken_ = result && result.accessToken;\r\n                    connection_1 = new Connection(connId_1, self_1.repoInfo_, onDataMessage_1, onReady_1, onDisconnect_1, \r\n                    /* onKill= */ function (reason) {\r\n                        warn(reason + ' (' + self_1.repoInfo_.toString() + ')');\r\n                        self_1.interrupt(SERVER_KILL_INTERRUPT_REASON);\r\n                    }, lastSessionId_1);\r\n                }\r\n                else {\r\n                    log('getToken() completed but was canceled');\r\n                }\r\n            })\r\n                .then(null, function (error) {\r\n                self_1.log_('Failed to get token: ' + error);\r\n                if (!canceled_1) {\r\n                    if (util.CONSTANTS.NODE_ADMIN) {\r\n                        // This may be a critical error for the Admin Node.js SDK, so log a warning.\r\n                        // But getToken() may also just have temporarily failed, so we still want to\r\n                        // continue retrying.\r\n                        warn(error);\r\n                    }\r\n                    closeFn_1();\r\n                }\r\n            });\r\n        }\r\n    };\r\n    /**\r\n     * @param {string} reason\r\n     */\r\n    PersistentConnection.prototype.interrupt = function (reason) {\r\n        log('Interrupting connection for reason: ' + reason);\r\n        this.interruptReasons_[reason] = true;\r\n        if (this.realtime_) {\r\n            this.realtime_.close();\r\n        }\r\n        else {\r\n            if (this.establishConnectionTimer_) {\r\n                clearTimeout(this.establishConnectionTimer_);\r\n                this.establishConnectionTimer_ = null;\r\n            }\r\n            if (this.connected_) {\r\n                this.onRealtimeDisconnect_();\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * @param {string} reason\r\n     */\r\n    PersistentConnection.prototype.resume = function (reason) {\r\n        log('Resuming connection for reason: ' + reason);\r\n        delete this.interruptReasons_[reason];\r\n        if (util.isEmpty(this.interruptReasons_)) {\r\n            this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n            if (!this.realtime_) {\r\n                this.scheduleConnect_(0);\r\n            }\r\n        }\r\n    };\r\n    PersistentConnection.prototype.handleTimestamp_ = function (timestamp) {\r\n        var delta = timestamp - new Date().getTime();\r\n        this.onServerInfoUpdate_({ serverTimeOffset: delta });\r\n    };\r\n    PersistentConnection.prototype.cancelSentTransactions_ = function () {\r\n        for (var i = 0; i < this.outstandingPuts_.length; i++) {\r\n            var put = this.outstandingPuts_[i];\r\n            if (put && /*hash*/ 'h' in put.request && put.queued) {\r\n                if (put.onComplete)\r\n                    put.onComplete('disconnect');\r\n                delete this.outstandingPuts_[i];\r\n                this.outstandingPutCount_--;\r\n            }\r\n        }\r\n        // Clean up array occasionally.\r\n        if (this.outstandingPutCount_ === 0)\r\n            this.outstandingPuts_ = [];\r\n    };\r\n    /**\r\n     * @param {!string} pathString\r\n     * @param {Array.<*>=} query\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.onListenRevoked_ = function (pathString, query) {\r\n        // Remove the listen and manufacture a \"permission_denied\" error for the failed listen.\r\n        var queryId;\r\n        if (!query) {\r\n            queryId = 'default';\r\n        }\r\n        else {\r\n            queryId = query.map(function (q) { return ObjectToUniqueKey(q); }).join('$');\r\n        }\r\n        var listen = this.removeListen_(pathString, queryId);\r\n        if (listen && listen.onComplete)\r\n            listen.onComplete('permission_denied');\r\n    };\r\n    /**\r\n     * @param {!string} pathString\r\n     * @param {!string} queryId\r\n     * @return {{queries:Array.<Query>, onComplete:function(string)}}\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.removeListen_ = function (pathString, queryId) {\r\n        var normalizedPathString = new Path(pathString).toString(); // normalize path.\r\n        var listen;\r\n        if (this.listens_[normalizedPathString] !== undefined) {\r\n            listen = this.listens_[normalizedPathString][queryId];\r\n            delete this.listens_[normalizedPathString][queryId];\r\n            if (util.getCount(this.listens_[normalizedPathString]) === 0) {\r\n                delete this.listens_[normalizedPathString];\r\n            }\r\n        }\r\n        else {\r\n            // all listens for this path has already been removed\r\n            listen = undefined;\r\n        }\r\n        return listen;\r\n    };\r\n    PersistentConnection.prototype.onAuthRevoked_ = function (statusCode, explanation) {\r\n        log('Auth token revoked: ' + statusCode + '/' + explanation);\r\n        this.authToken_ = null;\r\n        this.forceTokenRefresh_ = true;\r\n        this.realtime_.close();\r\n        if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {\r\n            // We'll wait a couple times before logging the warning / increasing the\r\n            // retry period since oauth tokens will report as \"invalid\" if they're\r\n            // just expired. Plus there may be transient issues that resolve themselves.\r\n            this.invalidAuthTokenCount_++;\r\n            if (this.invalidAuthTokenCount_ >= INVALID_AUTH_TOKEN_THRESHOLD) {\r\n                // Set a long reconnect delay because recovery is unlikely\r\n                this.reconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;\r\n                // Notify the auth token provider that the token is invalid, which will log\r\n                // a warning\r\n                this.authTokenProvider_.notifyForInvalidToken();\r\n            }\r\n        }\r\n    };\r\n    PersistentConnection.prototype.onSecurityDebugPacket_ = function (body) {\r\n        if (this.securityDebugCallback_) {\r\n            this.securityDebugCallback_(body);\r\n        }\r\n        else {\r\n            if ('msg' in body) {\r\n                console.log('FIREBASE: ' + body['msg'].replace('\\n', '\\nFIREBASE: '));\r\n            }\r\n        }\r\n    };\r\n    PersistentConnection.prototype.restoreState_ = function () {\r\n        var _this = this;\r\n        //Re-authenticate ourselves if we have a credential stored.\r\n        this.tryAuth();\r\n        // Puts depend on having received the corresponding data update from the server before they complete, so we must\r\n        // make sure to send listens before puts.\r\n        util.forEach(this.listens_, function (pathString, queries) {\r\n            util.forEach(queries, function (key, listenSpec) {\r\n                _this.sendListen_(listenSpec);\r\n            });\r\n        });\r\n        for (var i = 0; i < this.outstandingPuts_.length; i++) {\r\n            if (this.outstandingPuts_[i])\r\n                this.sendPut_(i);\r\n        }\r\n        while (this.onDisconnectRequestQueue_.length) {\r\n            var request = this.onDisconnectRequestQueue_.shift();\r\n            this.sendOnDisconnect_(request.action, request.pathString, request.data, request.onComplete);\r\n        }\r\n    };\r\n    /**\r\n     * Sends client stats for first connection\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.sendConnectStats_ = function () {\r\n        var stats = {};\r\n        var clientName = 'js';\r\n        if (util.CONSTANTS.NODE_ADMIN) {\r\n            clientName = 'admin_node';\r\n        }\r\n        else if (util.CONSTANTS.NODE_CLIENT) {\r\n            clientName = 'node';\r\n        }\r\n        stats['sdk.' + clientName + '.' + firebase.SDK_VERSION.replace(/\\./g, '-')] = 1;\r\n        if (util.isMobileCordova()) {\r\n            stats['framework.cordova'] = 1;\r\n        }\r\n        else if (util.isReactNative()) {\r\n            stats['framework.reactnative'] = 1;\r\n        }\r\n        this.reportStats(stats);\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     * @private\r\n     */\r\n    PersistentConnection.prototype.shouldReconnect_ = function () {\r\n        var online = OnlineMonitor.getInstance().currentlyOnline();\r\n        return util.isEmpty(this.interruptReasons_) && online;\r\n    };\r\n    /**\r\n     * @private\r\n     */\r\n    PersistentConnection.nextPersistentConnectionId_ = 0;\r\n    /**\r\n     * Counter for number of connections created. Mainly used for tagging in the logs\r\n     * @type {number}\r\n     * @private\r\n     */\r\n    PersistentConnection.nextConnectionId_ = 0;\r\n    return PersistentConnection;\r\n}(ServerActions));\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An implementation of ServerActions that communicates with the server via REST requests.\r\n * This is mostly useful for compatibility with crawlers, where we don't want to spin up a full\r\n * persistent connection (using WebSockets or long-polling)\r\n */\r\nvar ReadonlyRestClient = /** @class */ (function (_super) {\r\n    tslib_1.__extends(ReadonlyRestClient, _super);\r\n    /**\r\n     * @param {!RepoInfo} repoInfo_ Data about the namespace we are connecting to\r\n     * @param {function(string, *, boolean, ?number)} onDataUpdate_ A callback for new data from the server\r\n     * @param {AuthTokenProvider} authTokenProvider_\r\n     * @implements {ServerActions}\r\n     */\r\n    function ReadonlyRestClient(repoInfo_, onDataUpdate_, authTokenProvider_) {\r\n        var _this = _super.call(this) || this;\r\n        _this.repoInfo_ = repoInfo_;\r\n        _this.onDataUpdate_ = onDataUpdate_;\r\n        _this.authTokenProvider_ = authTokenProvider_;\r\n        /** @private {function(...[*])} */\r\n        _this.log_ = logWrapper('p:rest:');\r\n        /**\r\n         * We don't actually need to track listens, except to prevent us calling an onComplete for a listen\r\n         * that's been removed. :-/\r\n         *\r\n         * @private {!Object.<string, !Object>}\r\n         */\r\n        _this.listens_ = {};\r\n        return _this;\r\n    }\r\n    ReadonlyRestClient.prototype.reportStats = function (stats) {\r\n        throw new Error('Method not implemented.');\r\n    };\r\n    /**\r\n     * @param {!Query} query\r\n     * @param {?number=} tag\r\n     * @return {string}\r\n     * @private\r\n     */\r\n    ReadonlyRestClient.getListenId_ = function (query, tag) {\r\n        if (tag !== undefined) {\r\n            return 'tag$' + tag;\r\n        }\r\n        else {\r\n            util.assert(query.getQueryParams().isDefault(), \"should have a tag if it's not a default query.\");\r\n            return query.path.toString();\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    ReadonlyRestClient.prototype.listen = function (query, currentHashFn, tag, onComplete) {\r\n        var _this = this;\r\n        var pathString = query.path.toString();\r\n        this.log_('Listen called for ' + pathString + ' ' + query.queryIdentifier());\r\n        // Mark this listener so we can tell if it's removed.\r\n        var listenId = ReadonlyRestClient.getListenId_(query, tag);\r\n        var thisListen = {};\r\n        this.listens_[listenId] = thisListen;\r\n        var queryStringParameters = query\r\n            .getQueryParams()\r\n            .toRestQueryStringParameters();\r\n        this.restRequest_(pathString + '.json', queryStringParameters, function (error, result) {\r\n            var data = result;\r\n            if (error === 404) {\r\n                data = null;\r\n                error = null;\r\n            }\r\n            if (error === null) {\r\n                _this.onDataUpdate_(pathString, data, /*isMerge=*/ false, tag);\r\n            }\r\n            if (util.safeGet(_this.listens_, listenId) === thisListen) {\r\n                var status_1;\r\n                if (!error) {\r\n                    status_1 = 'ok';\r\n                }\r\n                else if (error == 401) {\r\n                    status_1 = 'permission_denied';\r\n                }\r\n                else {\r\n                    status_1 = 'rest_error:' + error;\r\n                }\r\n                onComplete(status_1, null);\r\n            }\r\n        });\r\n    };\r\n    /** @inheritDoc */\r\n    ReadonlyRestClient.prototype.unlisten = function (query, tag) {\r\n        var listenId = ReadonlyRestClient.getListenId_(query, tag);\r\n        delete this.listens_[listenId];\r\n    };\r\n    /** @inheritDoc */\r\n    ReadonlyRestClient.prototype.refreshAuthToken = function (token) {\r\n        // no-op since we just always call getToken.\r\n    };\r\n    /**\r\n     * Performs a REST request to the given path, with the provided query string parameters,\r\n     * and any auth credentials we have.\r\n     *\r\n     * @param {!string} pathString\r\n     * @param {!Object.<string, *>} queryStringParameters\r\n     * @param {?function(?number, *=)} callback\r\n     * @private\r\n     */\r\n    ReadonlyRestClient.prototype.restRequest_ = function (pathString, queryStringParameters, callback) {\r\n        var _this = this;\r\n        if (queryStringParameters === void 0) { queryStringParameters = {}; }\r\n        queryStringParameters['format'] = 'export';\r\n        this.authTokenProvider_\r\n            .getToken(/*forceRefresh=*/ false)\r\n            .then(function (authTokenData) {\r\n            var authToken = authTokenData && authTokenData.accessToken;\r\n            if (authToken) {\r\n                queryStringParameters['auth'] = authToken;\r\n            }\r\n            var url = (_this.repoInfo_.secure ? 'https://' : 'http://') +\r\n                _this.repoInfo_.host +\r\n                pathString +\r\n                '?' +\r\n                'ns=' +\r\n                _this.repoInfo_.namespace +\r\n                util.querystring(queryStringParameters);\r\n            _this.log_('Sending REST request for ' + url);\r\n            var xhr = new XMLHttpRequest();\r\n            xhr.onreadystatechange = function () {\r\n                if (callback && xhr.readyState === 4) {\r\n                    _this.log_('REST Response for ' + url + ' received. status:', xhr.status, 'response:', xhr.responseText);\r\n                    var res = null;\r\n                    if (xhr.status >= 200 && xhr.status < 300) {\r\n                        try {\r\n                            res = util.jsonEval(xhr.responseText);\r\n                        }\r\n                        catch (e) {\r\n                            warn('Failed to parse JSON response for ' +\r\n                                url +\r\n                                ': ' +\r\n                                xhr.responseText);\r\n                        }\r\n                        callback(null, res);\r\n                    }\r\n                    else {\r\n                        // 401 and 404 are expected.\r\n                        if (xhr.status !== 401 && xhr.status !== 404) {\r\n                            warn('Got unsuccessful REST response for ' +\r\n                                url +\r\n                                ' Status: ' +\r\n                                xhr.status);\r\n                        }\r\n                        callback(xhr.status);\r\n                    }\r\n                    callback = null;\r\n                }\r\n            };\r\n            xhr.open('GET', url, /*asynchronous=*/ true);\r\n            xhr.send();\r\n        });\r\n    };\r\n    return ReadonlyRestClient;\r\n}(ServerActions));\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar INTERRUPT_REASON = 'repo_interrupt';\r\n/**\r\n * A connection to a single data repository.\r\n */\r\nvar Repo = /** @class */ (function () {\r\n    /**\r\n     * @param {!RepoInfo} repoInfo_\r\n     * @param {boolean} forceRestClient\r\n     * @param {!FirebaseApp} app\r\n     */\r\n    function Repo(repoInfo_, forceRestClient, app) {\r\n        var _this = this;\r\n        this.repoInfo_ = repoInfo_;\r\n        this.app = app;\r\n        this.dataUpdateCount = 0;\r\n        this.statsListener_ = null;\r\n        this.eventQueue_ = new EventQueue();\r\n        this.nextWriteId_ = 1;\r\n        this.interceptServerDataCallback_ = null;\r\n        // A list of data pieces and paths to be set when this client disconnects.\r\n        this.onDisconnect_ = new SparseSnapshotTree();\r\n        /**\r\n         * TODO: This should be @private but it's used by test_access.js and internal.js\r\n         * @type {?PersistentConnection}\r\n         */\r\n        this.persistentConnection_ = null;\r\n        /** @type {!AuthTokenProvider} */\r\n        var authTokenProvider = new AuthTokenProvider(app);\r\n        this.stats_ = StatsManager.getCollection(repoInfo_);\r\n        if (forceRestClient || beingCrawled()) {\r\n            this.server_ = new ReadonlyRestClient(this.repoInfo_, this.onDataUpdate_.bind(this), authTokenProvider);\r\n            // Minor hack: Fire onConnect immediately, since there's no actual connection.\r\n            setTimeout(this.onConnectStatus_.bind(this, true), 0);\r\n        }\r\n        else {\r\n            var authOverride = app.options['databaseAuthVariableOverride'];\r\n            // Validate authOverride\r\n            if (typeof authOverride !== 'undefined' && authOverride !== null) {\r\n                if (typeof authOverride !== 'object') {\r\n                    throw new Error('Only objects are supported for option databaseAuthVariableOverride');\r\n                }\r\n                try {\r\n                    util.stringify(authOverride);\r\n                }\r\n                catch (e) {\r\n                    throw new Error('Invalid authOverride provided: ' + e);\r\n                }\r\n            }\r\n            this.persistentConnection_ = new PersistentConnection(this.repoInfo_, this.onDataUpdate_.bind(this), this.onConnectStatus_.bind(this), this.onServerInfoUpdate_.bind(this), authTokenProvider, authOverride);\r\n            this.server_ = this.persistentConnection_;\r\n        }\r\n        authTokenProvider.addTokenChangeListener(function (token) {\r\n            _this.server_.refreshAuthToken(token);\r\n        });\r\n        // In the case of multiple Repos for the same repoInfo (i.e. there are multiple Firebase.Contexts being used),\r\n        // we only want to create one StatsReporter.  As such, we'll report stats over the first Repo created.\r\n        this.statsReporter_ = StatsManager.getOrCreateReporter(repoInfo_, function () { return new StatsReporter(_this.stats_, _this.server_); });\r\n        this.transactions_init_();\r\n        // Used for .info.\r\n        this.infoData_ = new SnapshotHolder();\r\n        this.infoSyncTree_ = new SyncTree({\r\n            startListening: function (query, tag, currentHashFn, onComplete) {\r\n                var infoEvents = [];\r\n                var node = _this.infoData_.getNode(query.path);\r\n                // This is possibly a hack, but we have different semantics for .info endpoints. We don't raise null events\r\n                // on initial data...\r\n                if (!node.isEmpty()) {\r\n                    infoEvents = _this.infoSyncTree_.applyServerOverwrite(query.path, node);\r\n                    setTimeout(function () {\r\n                        onComplete('ok');\r\n                    }, 0);\r\n                }\r\n                return infoEvents;\r\n            },\r\n            stopListening: function () { }\r\n        });\r\n        this.updateInfo_('connected', false);\r\n        this.serverSyncTree_ = new SyncTree({\r\n            startListening: function (query, tag, currentHashFn, onComplete) {\r\n                _this.server_.listen(query, currentHashFn, tag, function (status, data) {\r\n                    var events = onComplete(status, data);\r\n                    _this.eventQueue_.raiseEventsForChangedPath(query.path, events);\r\n                });\r\n                // No synchronous events for network-backed sync trees\r\n                return [];\r\n            },\r\n            stopListening: function (query, tag) {\r\n                _this.server_.unlisten(query, tag);\r\n            }\r\n        });\r\n    }\r\n    /**\r\n     * @return {string}  The URL corresponding to the root of this Firebase.\r\n     */\r\n    Repo.prototype.toString = function () {\r\n        return ((this.repoInfo_.secure ? 'https://' : 'http://') + this.repoInfo_.host);\r\n    };\r\n    /**\r\n     * @return {!string} The namespace represented by the repo.\r\n     */\r\n    Repo.prototype.name = function () {\r\n        return this.repoInfo_.namespace;\r\n    };\r\n    /**\r\n     * @return {!number} The time in milliseconds, taking the server offset into account if we have one.\r\n     */\r\n    Repo.prototype.serverTime = function () {\r\n        var offsetNode = this.infoData_.getNode(new Path('.info/serverTimeOffset'));\r\n        var offset = offsetNode.val() || 0;\r\n        return new Date().getTime() + offset;\r\n    };\r\n    /**\r\n     * Generate ServerValues using some variables from the repo object.\r\n     * @return {!Object}\r\n     */\r\n    Repo.prototype.generateServerValues = function () {\r\n        return generateWithValues({\r\n            timestamp: this.serverTime()\r\n        });\r\n    };\r\n    /**\r\n     * Called by realtime when we get new messages from the server.\r\n     *\r\n     * @private\r\n     * @param {string} pathString\r\n     * @param {*} data\r\n     * @param {boolean} isMerge\r\n     * @param {?number} tag\r\n     */\r\n    Repo.prototype.onDataUpdate_ = function (pathString, data, isMerge, tag) {\r\n        // For testing.\r\n        this.dataUpdateCount++;\r\n        var path = new Path(pathString);\r\n        data = this.interceptServerDataCallback_\r\n            ? this.interceptServerDataCallback_(pathString, data)\r\n            : data;\r\n        var events = [];\r\n        if (tag) {\r\n            if (isMerge) {\r\n                var taggedChildren = util.map(data, function (raw) {\r\n                    return nodeFromJSON$1(raw);\r\n                });\r\n                events = this.serverSyncTree_.applyTaggedQueryMerge(path, taggedChildren, tag);\r\n            }\r\n            else {\r\n                var taggedSnap = nodeFromJSON$1(data);\r\n                events = this.serverSyncTree_.applyTaggedQueryOverwrite(path, taggedSnap, tag);\r\n            }\r\n        }\r\n        else if (isMerge) {\r\n            var changedChildren = util.map(data, function (raw) {\r\n                return nodeFromJSON$1(raw);\r\n            });\r\n            events = this.serverSyncTree_.applyServerMerge(path, changedChildren);\r\n        }\r\n        else {\r\n            var snap = nodeFromJSON$1(data);\r\n            events = this.serverSyncTree_.applyServerOverwrite(path, snap);\r\n        }\r\n        var affectedPath = path;\r\n        if (events.length > 0) {\r\n            // Since we have a listener outstanding for each transaction, receiving any events\r\n            // is a proxy for some change having occurred.\r\n            affectedPath = this.rerunTransactions_(path);\r\n        }\r\n        this.eventQueue_.raiseEventsForChangedPath(affectedPath, events);\r\n    };\r\n    /**\r\n     * TODO: This should be @private but it's used by test_access.js and internal.js\r\n     * @param {?function(!string, *):*} callback\r\n     * @private\r\n     */\r\n    Repo.prototype.interceptServerData_ = function (callback) {\r\n        this.interceptServerDataCallback_ = callback;\r\n    };\r\n    /**\r\n     * @param {!boolean} connectStatus\r\n     * @private\r\n     */\r\n    Repo.prototype.onConnectStatus_ = function (connectStatus) {\r\n        this.updateInfo_('connected', connectStatus);\r\n        if (connectStatus === false) {\r\n            this.runOnDisconnectEvents_();\r\n        }\r\n    };\r\n    /**\r\n     * @param {!Object} updates\r\n     * @private\r\n     */\r\n    Repo.prototype.onServerInfoUpdate_ = function (updates) {\r\n        var _this = this;\r\n        each(updates, function (value, key) {\r\n            _this.updateInfo_(key, value);\r\n        });\r\n    };\r\n    /**\r\n     *\r\n     * @param {!string} pathString\r\n     * @param {*} value\r\n     * @private\r\n     */\r\n    Repo.prototype.updateInfo_ = function (pathString, value) {\r\n        var path = new Path('/.info/' + pathString);\r\n        var newNode = nodeFromJSON$1(value);\r\n        this.infoData_.updateSnapshot(path, newNode);\r\n        var events = this.infoSyncTree_.applyServerOverwrite(path, newNode);\r\n        this.eventQueue_.raiseEventsForChangedPath(path, events);\r\n    };\r\n    /**\r\n     * @return {!number}\r\n     * @private\r\n     */\r\n    Repo.prototype.getNextWriteId_ = function () {\r\n        return this.nextWriteId_++;\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {*} newVal\r\n     * @param {number|string|null} newPriority\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */\r\n    Repo.prototype.setWithPriority = function (path, newVal, newPriority, onComplete) {\r\n        var _this = this;\r\n        this.log_('set', {\r\n            path: path.toString(),\r\n            value: newVal,\r\n            priority: newPriority\r\n        });\r\n        // TODO: Optimize this behavior to either (a) store flag to skip resolving where possible and / or\r\n        // (b) store unresolved paths on JSON parse\r\n        var serverValues = this.generateServerValues();\r\n        var newNodeUnresolved = nodeFromJSON$1(newVal, newPriority);\r\n        var newNode = resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);\r\n        var writeId = this.getNextWriteId_();\r\n        var events = this.serverSyncTree_.applyUserOverwrite(path, newNode, writeId, true);\r\n        this.eventQueue_.queueEvents(events);\r\n        this.server_.put(path.toString(), newNodeUnresolved.val(/*export=*/ true), function (status, errorReason) {\r\n            var success = status === 'ok';\r\n            if (!success) {\r\n                warn('set at ' + path + ' failed: ' + status);\r\n            }\r\n            var clearEvents = _this.serverSyncTree_.ackUserWrite(writeId, !success);\r\n            _this.eventQueue_.raiseEventsForChangedPath(path, clearEvents);\r\n            _this.callOnCompleteCallback(onComplete, status, errorReason);\r\n        });\r\n        var affectedPath = this.abortTransactions_(path);\r\n        this.rerunTransactions_(affectedPath);\r\n        // We queued the events above, so just flush the queue here\r\n        this.eventQueue_.raiseEventsForChangedPath(affectedPath, []);\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {!Object} childrenToMerge\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */\r\n    Repo.prototype.update = function (path, childrenToMerge, onComplete) {\r\n        var _this = this;\r\n        this.log_('update', { path: path.toString(), value: childrenToMerge });\r\n        // Start with our existing data and merge each child into it.\r\n        var empty = true;\r\n        var serverValues = this.generateServerValues();\r\n        var changedChildren = {};\r\n        util.forEach(childrenToMerge, function (changedKey, changedValue) {\r\n            empty = false;\r\n            var newNodeUnresolved = nodeFromJSON$1(changedValue);\r\n            changedChildren[changedKey] = resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);\r\n        });\r\n        if (!empty) {\r\n            var writeId_1 = this.getNextWriteId_();\r\n            var events = this.serverSyncTree_.applyUserMerge(path, changedChildren, writeId_1);\r\n            this.eventQueue_.queueEvents(events);\r\n            this.server_.merge(path.toString(), childrenToMerge, function (status, errorReason) {\r\n                var success = status === 'ok';\r\n                if (!success) {\r\n                    warn('update at ' + path + ' failed: ' + status);\r\n                }\r\n                var clearEvents = _this.serverSyncTree_.ackUserWrite(writeId_1, !success);\r\n                var affectedPath = clearEvents.length > 0 ? _this.rerunTransactions_(path) : path;\r\n                _this.eventQueue_.raiseEventsForChangedPath(affectedPath, clearEvents);\r\n                _this.callOnCompleteCallback(onComplete, status, errorReason);\r\n            });\r\n            util.forEach(childrenToMerge, function (changedPath) {\r\n                var affectedPath = _this.abortTransactions_(path.child(changedPath));\r\n                _this.rerunTransactions_(affectedPath);\r\n            });\r\n            // We queued the events above, so just flush the queue here\r\n            this.eventQueue_.raiseEventsForChangedPath(path, []);\r\n        }\r\n        else {\r\n            log(\"update() called with empty data.  Don't do anything.\");\r\n            this.callOnCompleteCallback(onComplete, 'ok');\r\n        }\r\n    };\r\n    /**\r\n     * Applies all of the changes stored up in the onDisconnect_ tree.\r\n     * @private\r\n     */\r\n    Repo.prototype.runOnDisconnectEvents_ = function () {\r\n        var _this = this;\r\n        this.log_('onDisconnectEvents');\r\n        var serverValues = this.generateServerValues();\r\n        var resolvedOnDisconnectTree = resolveDeferredValueTree(this.onDisconnect_, serverValues);\r\n        var events = [];\r\n        resolvedOnDisconnectTree.forEachTree(Path.Empty, function (path, snap) {\r\n            events = events.concat(_this.serverSyncTree_.applyServerOverwrite(path, snap));\r\n            var affectedPath = _this.abortTransactions_(path);\r\n            _this.rerunTransactions_(affectedPath);\r\n        });\r\n        this.onDisconnect_ = new SparseSnapshotTree();\r\n        this.eventQueue_.raiseEventsForChangedPath(Path.Empty, events);\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */\r\n    Repo.prototype.onDisconnectCancel = function (path, onComplete) {\r\n        var _this = this;\r\n        this.server_.onDisconnectCancel(path.toString(), function (status, errorReason) {\r\n            if (status === 'ok') {\r\n                _this.onDisconnect_.forget(path);\r\n            }\r\n            _this.callOnCompleteCallback(onComplete, status, errorReason);\r\n        });\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {*} value\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */\r\n    Repo.prototype.onDisconnectSet = function (path, value, onComplete) {\r\n        var _this = this;\r\n        var newNode = nodeFromJSON$1(value);\r\n        this.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), function (status, errorReason) {\r\n            if (status === 'ok') {\r\n                _this.onDisconnect_.remember(path, newNode);\r\n            }\r\n            _this.callOnCompleteCallback(onComplete, status, errorReason);\r\n        });\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {*} value\r\n     * @param {*} priority\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */\r\n    Repo.prototype.onDisconnectSetWithPriority = function (path, value, priority, onComplete) {\r\n        var _this = this;\r\n        var newNode = nodeFromJSON$1(value, priority);\r\n        this.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), function (status, errorReason) {\r\n            if (status === 'ok') {\r\n                _this.onDisconnect_.remember(path, newNode);\r\n            }\r\n            _this.callOnCompleteCallback(onComplete, status, errorReason);\r\n        });\r\n    };\r\n    /**\r\n     * @param {!Path} path\r\n     * @param {*} childrenToMerge\r\n     * @param {?function(?Error, *=)} onComplete\r\n     */\r\n    Repo.prototype.onDisconnectUpdate = function (path, childrenToMerge, onComplete) {\r\n        var _this = this;\r\n        if (util.isEmpty(childrenToMerge)) {\r\n            log(\"onDisconnect().update() called with empty data.  Don't do anything.\");\r\n            this.callOnCompleteCallback(onComplete, 'ok');\r\n            return;\r\n        }\r\n        this.server_.onDisconnectMerge(path.toString(), childrenToMerge, function (status, errorReason) {\r\n            if (status === 'ok') {\r\n                util.forEach(childrenToMerge, function (childName, childNode) {\r\n                    var newChildNode = nodeFromJSON$1(childNode);\r\n                    _this.onDisconnect_.remember(path.child(childName), newChildNode);\r\n                });\r\n            }\r\n            _this.callOnCompleteCallback(onComplete, status, errorReason);\r\n        });\r\n    };\r\n    /**\r\n     * @param {!Query} query\r\n     * @param {!EventRegistration} eventRegistration\r\n     */\r\n    Repo.prototype.addEventCallbackForQuery = function (query, eventRegistration) {\r\n        var events;\r\n        if (query.path.getFront() === '.info') {\r\n            events = this.infoSyncTree_.addEventRegistration(query, eventRegistration);\r\n        }\r\n        else {\r\n            events = this.serverSyncTree_.addEventRegistration(query, eventRegistration);\r\n        }\r\n        this.eventQueue_.raiseEventsAtPath(query.path, events);\r\n    };\r\n    /**\r\n     * @param {!Query} query\r\n     * @param {?EventRegistration} eventRegistration\r\n     */\r\n    Repo.prototype.removeEventCallbackForQuery = function (query, eventRegistration) {\r\n        // These are guaranteed not to raise events, since we're not passing in a cancelError. However, we can future-proof\r\n        // a little bit by handling the return values anyways.\r\n        var events;\r\n        if (query.path.getFront() === '.info') {\r\n            events = this.infoSyncTree_.removeEventRegistration(query, eventRegistration);\r\n        }\r\n        else {\r\n            events = this.serverSyncTree_.removeEventRegistration(query, eventRegistration);\r\n        }\r\n        this.eventQueue_.raiseEventsAtPath(query.path, events);\r\n    };\r\n    Repo.prototype.interrupt = function () {\r\n        if (this.persistentConnection_) {\r\n            this.persistentConnection_.interrupt(INTERRUPT_REASON);\r\n        }\r\n    };\r\n    Repo.prototype.resume = function () {\r\n        if (this.persistentConnection_) {\r\n            this.persistentConnection_.resume(INTERRUPT_REASON);\r\n        }\r\n    };\r\n    Repo.prototype.stats = function (showDelta) {\r\n        if (showDelta === void 0) { showDelta = false; }\r\n        if (typeof console === 'undefined')\r\n            return;\r\n        var stats;\r\n        if (showDelta) {\r\n            if (!this.statsListener_)\r\n                this.statsListener_ = new StatsListener(this.stats_);\r\n            stats = this.statsListener_.get();\r\n        }\r\n        else {\r\n            stats = this.stats_.get();\r\n        }\r\n        var longestName = Object.keys(stats).reduce(function (previousValue, currentValue) {\r\n            return Math.max(currentValue.length, previousValue);\r\n        }, 0);\r\n        util.forEach(stats, function (stat, value) {\r\n            // pad stat names to be the same length (plus 2 extra spaces).\r\n            for (var i = stat.length; i < longestName + 2; i++)\r\n                stat += ' ';\r\n            console.log(stat + value);\r\n        });\r\n    };\r\n    Repo.prototype.statsIncrementCounter = function (metric) {\r\n        this.stats_.incrementCounter(metric);\r\n        this.statsReporter_.includeStat(metric);\r\n    };\r\n    /**\r\n     * @param {...*} var_args\r\n     * @private\r\n     */\r\n    Repo.prototype.log_ = function () {\r\n        var var_args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            var_args[_i] = arguments[_i];\r\n        }\r\n        var prefix = '';\r\n        if (this.persistentConnection_) {\r\n            prefix = this.persistentConnection_.id + ':';\r\n        }\r\n        log.apply(void 0, [prefix].concat(var_args));\r\n    };\r\n    /**\r\n     * @param {?function(?Error, *=)} callback\r\n     * @param {!string} status\r\n     * @param {?string=} errorReason\r\n     */\r\n    Repo.prototype.callOnCompleteCallback = function (callback, status, errorReason) {\r\n        if (callback) {\r\n            exceptionGuard(function () {\r\n                if (status == 'ok') {\r\n                    callback(null);\r\n                }\r\n                else {\r\n                    var code = (status || 'error').toUpperCase();\r\n                    var message = code;\r\n                    if (errorReason)\r\n                        message += ': ' + errorReason;\r\n                    var error = new Error(message);\r\n                    error.code = code;\r\n                    callback(error);\r\n                }\r\n            });\r\n        }\r\n    };\r\n    Object.defineProperty(Repo.prototype, \"database\", {\r\n        get: function () {\r\n            return this.__database || (this.__database = new Database(this));\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    return Repo;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Filters nodes by range and uses an IndexFilter to track any changes after filtering the node\r\n *\r\n * @constructor\r\n * @implements {NodeFilter}\r\n */\r\nvar RangedFilter = /** @class */ (function () {\r\n    /**\r\n     * @param {!QueryParams} params\r\n     */\r\n    function RangedFilter(params) {\r\n        this.indexedFilter_ = new IndexedFilter(params.getIndex());\r\n        this.index_ = params.getIndex();\r\n        this.startPost_ = RangedFilter.getStartPost_(params);\r\n        this.endPost_ = RangedFilter.getEndPost_(params);\r\n    }\r\n    /**\r\n     * @return {!NamedNode}\r\n     */\r\n    RangedFilter.prototype.getStartPost = function () {\r\n        return this.startPost_;\r\n    };\r\n    /**\r\n     * @return {!NamedNode}\r\n     */\r\n    RangedFilter.prototype.getEndPost = function () {\r\n        return this.endPost_;\r\n    };\r\n    /**\r\n     * @param {!NamedNode} node\r\n     * @return {boolean}\r\n     */\r\n    RangedFilter.prototype.matches = function (node) {\r\n        return (this.index_.compare(this.getStartPost(), node) <= 0 &&\r\n            this.index_.compare(node, this.getEndPost()) <= 0);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    RangedFilter.prototype.updateChild = function (snap, key, newChild, affectedPath, source, optChangeAccumulator) {\r\n        if (!this.matches(new NamedNode(key, newChild))) {\r\n            newChild = ChildrenNode.EMPTY_NODE;\r\n        }\r\n        return this.indexedFilter_.updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    RangedFilter.prototype.updateFullNode = function (oldSnap, newSnap, optChangeAccumulator) {\r\n        if (newSnap.isLeafNode()) {\r\n            // Make sure we have a children node with the correct index, not a leaf node;\r\n            newSnap = ChildrenNode.EMPTY_NODE;\r\n        }\r\n        var filtered = newSnap.withIndex(this.index_);\r\n        // Don't support priorities on queries\r\n        filtered = filtered.updatePriority(ChildrenNode.EMPTY_NODE);\r\n        var self = this;\r\n        newSnap.forEachChild(PRIORITY_INDEX, function (key, childNode) {\r\n            if (!self.matches(new NamedNode(key, childNode))) {\r\n                filtered = filtered.updateImmediateChild(key, ChildrenNode.EMPTY_NODE);\r\n            }\r\n        });\r\n        return this.indexedFilter_.updateFullNode(oldSnap, filtered, optChangeAccumulator);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    RangedFilter.prototype.updatePriority = function (oldSnap, newPriority) {\r\n        // Don't support priorities on queries\r\n        return oldSnap;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    RangedFilter.prototype.filtersNodes = function () {\r\n        return true;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    RangedFilter.prototype.getIndexedFilter = function () {\r\n        return this.indexedFilter_;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    RangedFilter.prototype.getIndex = function () {\r\n        return this.index_;\r\n    };\r\n    /**\r\n     * @param {!QueryParams} params\r\n     * @return {!NamedNode}\r\n     * @private\r\n     */\r\n    RangedFilter.getStartPost_ = function (params) {\r\n        if (params.hasStart()) {\r\n            var startName = params.getIndexStartName();\r\n            return params.getIndex().makePost(params.getIndexStartValue(), startName);\r\n        }\r\n        else {\r\n            return params.getIndex().minPost();\r\n        }\r\n    };\r\n    /**\r\n     * @param {!QueryParams} params\r\n     * @return {!NamedNode}\r\n     * @private\r\n     */\r\n    RangedFilter.getEndPost_ = function (params) {\r\n        if (params.hasEnd()) {\r\n            var endName = params.getIndexEndName();\r\n            return params.getIndex().makePost(params.getIndexEndValue(), endName);\r\n        }\r\n        else {\r\n            return params.getIndex().maxPost();\r\n        }\r\n    };\r\n    return RangedFilter;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Applies a limit and a range to a node and uses RangedFilter to do the heavy lifting where possible\r\n *\r\n * @constructor\r\n * @implements {NodeFilter}\r\n */\r\nvar LimitedFilter = /** @class */ (function () {\r\n    /**\r\n     * @param {!QueryParams} params\r\n     */\r\n    function LimitedFilter(params) {\r\n        this.rangedFilter_ = new RangedFilter(params);\r\n        this.index_ = params.getIndex();\r\n        this.limit_ = params.getLimit();\r\n        this.reverse_ = !params.isViewFromLeft();\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LimitedFilter.prototype.updateChild = function (snap, key, newChild, affectedPath, source, optChangeAccumulator) {\r\n        if (!this.rangedFilter_.matches(new NamedNode(key, newChild))) {\r\n            newChild = ChildrenNode.EMPTY_NODE;\r\n        }\r\n        if (snap.getImmediateChild(key).equals(newChild)) {\r\n            // No change\r\n            return snap;\r\n        }\r\n        else if (snap.numChildren() < this.limit_) {\r\n            return this.rangedFilter_\r\n                .getIndexedFilter()\r\n                .updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator);\r\n        }\r\n        else {\r\n            return this.fullLimitUpdateChild_(snap, key, newChild, source, optChangeAccumulator);\r\n        }\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LimitedFilter.prototype.updateFullNode = function (oldSnap, newSnap, optChangeAccumulator) {\r\n        var filtered;\r\n        if (newSnap.isLeafNode() || newSnap.isEmpty()) {\r\n            // Make sure we have a children node with the correct index, not a leaf node;\r\n            filtered = ChildrenNode.EMPTY_NODE.withIndex(this.index_);\r\n        }\r\n        else {\r\n            if (this.limit_ * 2 < newSnap.numChildren() &&\r\n                newSnap.isIndexed(this.index_)) {\r\n                // Easier to build up a snapshot, since what we're given has more than twice the elements we want\r\n                filtered = ChildrenNode.EMPTY_NODE.withIndex(this.index_);\r\n                // anchor to the startPost, endPost, or last element as appropriate\r\n                var iterator = void 0;\r\n                if (this.reverse_) {\r\n                    iterator = newSnap.getReverseIteratorFrom(this.rangedFilter_.getEndPost(), this.index_);\r\n                }\r\n                else {\r\n                    iterator = newSnap.getIteratorFrom(this.rangedFilter_.getStartPost(), this.index_);\r\n                }\r\n                var count = 0;\r\n                while (iterator.hasNext() && count < this.limit_) {\r\n                    var next = iterator.getNext();\r\n                    var inRange = void 0;\r\n                    if (this.reverse_) {\r\n                        inRange =\r\n                            this.index_.compare(this.rangedFilter_.getStartPost(), next) <= 0;\r\n                    }\r\n                    else {\r\n                        inRange =\r\n                            this.index_.compare(next, this.rangedFilter_.getEndPost()) <= 0;\r\n                    }\r\n                    if (inRange) {\r\n                        filtered = filtered.updateImmediateChild(next.name, next.node);\r\n                        count++;\r\n                    }\r\n                    else {\r\n                        // if we have reached the end post, we cannot keep adding elemments\r\n                        break;\r\n                    }\r\n                }\r\n            }\r\n            else {\r\n                // The snap contains less than twice the limit. Faster to delete from the snap than build up a new one\r\n                filtered = newSnap.withIndex(this.index_);\r\n                // Don't support priorities on queries\r\n                filtered = filtered.updatePriority(ChildrenNode.EMPTY_NODE);\r\n                var startPost = void 0;\r\n                var endPost = void 0;\r\n                var cmp = void 0;\r\n                var iterator = void 0;\r\n                if (this.reverse_) {\r\n                    iterator = filtered.getReverseIterator(this.index_);\r\n                    startPost = this.rangedFilter_.getEndPost();\r\n                    endPost = this.rangedFilter_.getStartPost();\r\n                    var indexCompare_1 = this.index_.getCompare();\r\n                    cmp = function (a, b) { return indexCompare_1(b, a); };\r\n                }\r\n                else {\r\n                    iterator = filtered.getIterator(this.index_);\r\n                    startPost = this.rangedFilter_.getStartPost();\r\n                    endPost = this.rangedFilter_.getEndPost();\r\n                    cmp = this.index_.getCompare();\r\n                }\r\n                var count = 0;\r\n                var foundStartPost = false;\r\n                while (iterator.hasNext()) {\r\n                    var next = iterator.getNext();\r\n                    if (!foundStartPost && cmp(startPost, next) <= 0) {\r\n                        // start adding\r\n                        foundStartPost = true;\r\n                    }\r\n                    var inRange = foundStartPost && count < this.limit_ && cmp(next, endPost) <= 0;\r\n                    if (inRange) {\r\n                        count++;\r\n                    }\r\n                    else {\r\n                        filtered = filtered.updateImmediateChild(next.name, ChildrenNode.EMPTY_NODE);\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        return this.rangedFilter_\r\n            .getIndexedFilter()\r\n            .updateFullNode(oldSnap, filtered, optChangeAccumulator);\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LimitedFilter.prototype.updatePriority = function (oldSnap, newPriority) {\r\n        // Don't support priorities on queries\r\n        return oldSnap;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LimitedFilter.prototype.filtersNodes = function () {\r\n        return true;\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LimitedFilter.prototype.getIndexedFilter = function () {\r\n        return this.rangedFilter_.getIndexedFilter();\r\n    };\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    LimitedFilter.prototype.getIndex = function () {\r\n        return this.index_;\r\n    };\r\n    /**\r\n     * @param {!Node} snap\r\n     * @param {string} childKey\r\n     * @param {!Node} childSnap\r\n     * @param {!CompleteChildSource} source\r\n     * @param {?ChildChangeAccumulator} changeAccumulator\r\n     * @return {!Node}\r\n     * @private\r\n     */\r\n    LimitedFilter.prototype.fullLimitUpdateChild_ = function (snap, childKey, childSnap, source, changeAccumulator) {\r\n        // TODO: rename all cache stuff etc to general snap terminology\r\n        var cmp;\r\n        if (this.reverse_) {\r\n            var indexCmp_1 = this.index_.getCompare();\r\n            cmp = function (a, b) { return indexCmp_1(b, a); };\r\n        }\r\n        else {\r\n            cmp = this.index_.getCompare();\r\n        }\r\n        var oldEventCache = snap;\r\n        util.assert(oldEventCache.numChildren() == this.limit_, '');\r\n        var newChildNamedNode = new NamedNode(childKey, childSnap);\r\n        var windowBoundary = this.reverse_\r\n            ? oldEventCache.getFirstChild(this.index_)\r\n            : oldEventCache.getLastChild(this.index_);\r\n        var inRange = this.rangedFilter_.matches(newChildNamedNode);\r\n        if (oldEventCache.hasChild(childKey)) {\r\n            var oldChildSnap = oldEventCache.getImmediateChild(childKey);\r\n            var nextChild = source.getChildAfterChild(this.index_, windowBoundary, this.reverse_);\r\n            while (nextChild != null &&\r\n                (nextChild.name == childKey || oldEventCache.hasChild(nextChild.name))) {\r\n                // There is a weird edge case where a node is updated as part of a merge in the write tree, but hasn't\r\n                // been applied to the limited filter yet. Ignore this next child which will be updated later in\r\n                // the limited filter...\r\n                nextChild = source.getChildAfterChild(this.index_, nextChild, this.reverse_);\r\n            }\r\n            var compareNext = nextChild == null ? 1 : cmp(nextChild, newChildNamedNode);\r\n            var remainsInWindow = inRange && !childSnap.isEmpty() && compareNext >= 0;\r\n            if (remainsInWindow) {\r\n                if (changeAccumulator != null) {\r\n                    changeAccumulator.trackChildChange(Change.childChangedChange(childKey, childSnap, oldChildSnap));\r\n                }\r\n                return oldEventCache.updateImmediateChild(childKey, childSnap);\r\n            }\r\n            else {\r\n                if (changeAccumulator != null) {\r\n                    changeAccumulator.trackChildChange(Change.childRemovedChange(childKey, oldChildSnap));\r\n                }\r\n                var newEventCache = oldEventCache.updateImmediateChild(childKey, ChildrenNode.EMPTY_NODE);\r\n                var nextChildInRange = nextChild != null && this.rangedFilter_.matches(nextChild);\r\n                if (nextChildInRange) {\r\n                    if (changeAccumulator != null) {\r\n                        changeAccumulator.trackChildChange(Change.childAddedChange(nextChild.name, nextChild.node));\r\n                    }\r\n                    return newEventCache.updateImmediateChild(nextChild.name, nextChild.node);\r\n                }\r\n                else {\r\n                    return newEventCache;\r\n                }\r\n            }\r\n        }\r\n        else if (childSnap.isEmpty()) {\r\n            // we're deleting a node, but it was not in the window, so ignore it\r\n            return snap;\r\n        }\r\n        else if (inRange) {\r\n            if (cmp(windowBoundary, newChildNamedNode) >= 0) {\r\n                if (changeAccumulator != null) {\r\n                    changeAccumulator.trackChildChange(Change.childRemovedChange(windowBoundary.name, windowBoundary.node));\r\n                    changeAccumulator.trackChildChange(Change.childAddedChange(childKey, childSnap));\r\n                }\r\n                return oldEventCache\r\n                    .updateImmediateChild(childKey, childSnap)\r\n                    .updateImmediateChild(windowBoundary.name, ChildrenNode.EMPTY_NODE);\r\n            }\r\n            else {\r\n                return snap;\r\n            }\r\n        }\r\n        else {\r\n            return snap;\r\n        }\r\n    };\r\n    return LimitedFilter;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * This class is an immutable-from-the-public-api struct containing a set of query parameters defining a\r\n * range to be returned for a particular location. It is assumed that validation of parameters is done at the\r\n * user-facing API level, so it is not done here.\r\n * @constructor\r\n */\r\nvar QueryParams = /** @class */ (function () {\r\n    function QueryParams() {\r\n        this.limitSet_ = false;\r\n        this.startSet_ = false;\r\n        this.startNameSet_ = false;\r\n        this.endSet_ = false;\r\n        this.endNameSet_ = false;\r\n        this.limit_ = 0;\r\n        this.viewFrom_ = '';\r\n        this.indexStartValue_ = null;\r\n        this.indexStartName_ = '';\r\n        this.indexEndValue_ = null;\r\n        this.indexEndName_ = '';\r\n        this.index_ = PRIORITY_INDEX;\r\n    }\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    QueryParams.prototype.hasStart = function () {\r\n        return this.startSet_;\r\n    };\r\n    /**\r\n     * @return {boolean} True if it would return from left.\r\n     */\r\n    QueryParams.prototype.isViewFromLeft = function () {\r\n        if (this.viewFrom_ === '') {\r\n            // limit(), rather than limitToFirst or limitToLast was called.\r\n            // This means that only one of startSet_ and endSet_ is true. Use them\r\n            // to calculate which side of the view to anchor to. If neither is set,\r\n            // anchor to the end.\r\n            return this.startSet_;\r\n        }\r\n        else {\r\n            return (this.viewFrom_ === QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT);\r\n        }\r\n    };\r\n    /**\r\n     * Only valid to call if hasStart() returns true\r\n     * @return {*}\r\n     */\r\n    QueryParams.prototype.getIndexStartValue = function () {\r\n        util.assert(this.startSet_, 'Only valid if start has been set');\r\n        return this.indexStartValue_;\r\n    };\r\n    /**\r\n     * Only valid to call if hasStart() returns true.\r\n     * Returns the starting key name for the range defined by these query parameters\r\n     * @return {!string}\r\n     */\r\n    QueryParams.prototype.getIndexStartName = function () {\r\n        util.assert(this.startSet_, 'Only valid if start has been set');\r\n        if (this.startNameSet_) {\r\n            return this.indexStartName_;\r\n        }\r\n        else {\r\n            return MIN_NAME;\r\n        }\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    QueryParams.prototype.hasEnd = function () {\r\n        return this.endSet_;\r\n    };\r\n    /**\r\n     * Only valid to call if hasEnd() returns true.\r\n     * @return {*}\r\n     */\r\n    QueryParams.prototype.getIndexEndValue = function () {\r\n        util.assert(this.endSet_, 'Only valid if end has been set');\r\n        return this.indexEndValue_;\r\n    };\r\n    /**\r\n     * Only valid to call if hasEnd() returns true.\r\n     * Returns the end key name for the range defined by these query parameters\r\n     * @return {!string}\r\n     */\r\n    QueryParams.prototype.getIndexEndName = function () {\r\n        util.assert(this.endSet_, 'Only valid if end has been set');\r\n        if (this.endNameSet_) {\r\n            return this.indexEndName_;\r\n        }\r\n        else {\r\n            return MAX_NAME;\r\n        }\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    QueryParams.prototype.hasLimit = function () {\r\n        return this.limitSet_;\r\n    };\r\n    /**\r\n     * @return {boolean} True if a limit has been set and it has been explicitly anchored\r\n     */\r\n    QueryParams.prototype.hasAnchoredLimit = function () {\r\n        return this.limitSet_ && this.viewFrom_ !== '';\r\n    };\r\n    /**\r\n     * Only valid to call if hasLimit() returns true\r\n     * @return {!number}\r\n     */\r\n    QueryParams.prototype.getLimit = function () {\r\n        util.assert(this.limitSet_, 'Only valid if limit has been set');\r\n        return this.limit_;\r\n    };\r\n    /**\r\n     * @return {!Index}\r\n     */\r\n    QueryParams.prototype.getIndex = function () {\r\n        return this.index_;\r\n    };\r\n    /**\r\n     * @return {!QueryParams}\r\n     * @private\r\n     */\r\n    QueryParams.prototype.copy_ = function () {\r\n        var copy = new QueryParams();\r\n        copy.limitSet_ = this.limitSet_;\r\n        copy.limit_ = this.limit_;\r\n        copy.startSet_ = this.startSet_;\r\n        copy.indexStartValue_ = this.indexStartValue_;\r\n        copy.startNameSet_ = this.startNameSet_;\r\n        copy.indexStartName_ = this.indexStartName_;\r\n        copy.endSet_ = this.endSet_;\r\n        copy.indexEndValue_ = this.indexEndValue_;\r\n        copy.endNameSet_ = this.endNameSet_;\r\n        copy.indexEndName_ = this.indexEndName_;\r\n        copy.index_ = this.index_;\r\n        copy.viewFrom_ = this.viewFrom_;\r\n        return copy;\r\n    };\r\n    /**\r\n     * @param {!number} newLimit\r\n     * @return {!QueryParams}\r\n     */\r\n    QueryParams.prototype.limit = function (newLimit) {\r\n        var newParams = this.copy_();\r\n        newParams.limitSet_ = true;\r\n        newParams.limit_ = newLimit;\r\n        newParams.viewFrom_ = '';\r\n        return newParams;\r\n    };\r\n    /**\r\n     * @param {!number} newLimit\r\n     * @return {!QueryParams}\r\n     */\r\n    QueryParams.prototype.limitToFirst = function (newLimit) {\r\n        var newParams = this.copy_();\r\n        newParams.limitSet_ = true;\r\n        newParams.limit_ = newLimit;\r\n        newParams.viewFrom_ = QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT;\r\n        return newParams;\r\n    };\r\n    /**\r\n     * @param {!number} newLimit\r\n     * @return {!QueryParams}\r\n     */\r\n    QueryParams.prototype.limitToLast = function (newLimit) {\r\n        var newParams = this.copy_();\r\n        newParams.limitSet_ = true;\r\n        newParams.limit_ = newLimit;\r\n        newParams.viewFrom_ = QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT;\r\n        return newParams;\r\n    };\r\n    /**\r\n     * @param {*} indexValue\r\n     * @param {?string=} key\r\n     * @return {!QueryParams}\r\n     */\r\n    QueryParams.prototype.startAt = function (indexValue, key) {\r\n        var newParams = this.copy_();\r\n        newParams.startSet_ = true;\r\n        if (!(indexValue !== undefined)) {\r\n            indexValue = null;\r\n        }\r\n        newParams.indexStartValue_ = indexValue;\r\n        if (key != null) {\r\n            newParams.startNameSet_ = true;\r\n            newParams.indexStartName_ = key;\r\n        }\r\n        else {\r\n            newParams.startNameSet_ = false;\r\n            newParams.indexStartName_ = '';\r\n        }\r\n        return newParams;\r\n    };\r\n    /**\r\n     * @param {*} indexValue\r\n     * @param {?string=} key\r\n     * @return {!QueryParams}\r\n     */\r\n    QueryParams.prototype.endAt = function (indexValue, key) {\r\n        var newParams = this.copy_();\r\n        newParams.endSet_ = true;\r\n        if (!(indexValue !== undefined)) {\r\n            indexValue = null;\r\n        }\r\n        newParams.indexEndValue_ = indexValue;\r\n        if (key !== undefined) {\r\n            newParams.endNameSet_ = true;\r\n            newParams.indexEndName_ = key;\r\n        }\r\n        else {\r\n            newParams.endNameSet_ = false;\r\n            newParams.indexEndName_ = '';\r\n        }\r\n        return newParams;\r\n    };\r\n    /**\r\n     * @param {!Index} index\r\n     * @return {!QueryParams}\r\n     */\r\n    QueryParams.prototype.orderBy = function (index) {\r\n        var newParams = this.copy_();\r\n        newParams.index_ = index;\r\n        return newParams;\r\n    };\r\n    /**\r\n     * @return {!Object}\r\n     */\r\n    QueryParams.prototype.getQueryObject = function () {\r\n        var WIRE_PROTOCOL_CONSTANTS = QueryParams.WIRE_PROTOCOL_CONSTANTS_;\r\n        var obj = {};\r\n        if (this.startSet_) {\r\n            obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_VALUE] = this.indexStartValue_;\r\n            if (this.startNameSet_) {\r\n                obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_NAME] = this.indexStartName_;\r\n            }\r\n        }\r\n        if (this.endSet_) {\r\n            obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_VALUE] = this.indexEndValue_;\r\n            if (this.endNameSet_) {\r\n                obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_NAME] = this.indexEndName_;\r\n            }\r\n        }\r\n        if (this.limitSet_) {\r\n            obj[WIRE_PROTOCOL_CONSTANTS.LIMIT] = this.limit_;\r\n            var viewFrom = this.viewFrom_;\r\n            if (viewFrom === '') {\r\n                if (this.isViewFromLeft()) {\r\n                    viewFrom = WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_LEFT;\r\n                }\r\n                else {\r\n                    viewFrom = WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_RIGHT;\r\n                }\r\n            }\r\n            obj[WIRE_PROTOCOL_CONSTANTS.VIEW_FROM] = viewFrom;\r\n        }\r\n        // For now, priority index is the default, so we only specify if it's some other index\r\n        if (this.index_ !== PRIORITY_INDEX) {\r\n            obj[WIRE_PROTOCOL_CONSTANTS.INDEX] = this.index_.toString();\r\n        }\r\n        return obj;\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    QueryParams.prototype.loadsAllData = function () {\r\n        return !(this.startSet_ || this.endSet_ || this.limitSet_);\r\n    };\r\n    /**\r\n     * @return {boolean}\r\n     */\r\n    QueryParams.prototype.isDefault = function () {\r\n        return this.loadsAllData() && this.index_ == PRIORITY_INDEX;\r\n    };\r\n    /**\r\n     * @return {!NodeFilter}\r\n     */\r\n    QueryParams.prototype.getNodeFilter = function () {\r\n        if (this.loadsAllData()) {\r\n            return new IndexedFilter(this.getIndex());\r\n        }\r\n        else if (this.hasLimit()) {\r\n            return new LimitedFilter(this);\r\n        }\r\n        else {\r\n            return new RangedFilter(this);\r\n        }\r\n    };\r\n    /**\r\n     * Returns a set of REST query string parameters representing this query.\r\n     *\r\n     * @return {!Object.<string,*>} query string parameters\r\n     */\r\n    QueryParams.prototype.toRestQueryStringParameters = function () {\r\n        var REST_CONSTANTS = QueryParams.REST_QUERY_CONSTANTS_;\r\n        var qs = {};\r\n        if (this.isDefault()) {\r\n            return qs;\r\n        }\r\n        var orderBy;\r\n        if (this.index_ === PRIORITY_INDEX) {\r\n            orderBy = REST_CONSTANTS.PRIORITY_INDEX;\r\n        }\r\n        else if (this.index_ === VALUE_INDEX) {\r\n            orderBy = REST_CONSTANTS.VALUE_INDEX;\r\n        }\r\n        else if (this.index_ === KEY_INDEX) {\r\n            orderBy = REST_CONSTANTS.KEY_INDEX;\r\n        }\r\n        else {\r\n            util.assert(this.index_ instanceof PathIndex, 'Unrecognized index type!');\r\n            orderBy = this.index_.toString();\r\n        }\r\n        qs[REST_CONSTANTS.ORDER_BY] = util.stringify(orderBy);\r\n        if (this.startSet_) {\r\n            qs[REST_CONSTANTS.START_AT] = util.stringify(this.indexStartValue_);\r\n            if (this.startNameSet_) {\r\n                qs[REST_CONSTANTS.START_AT] += ',' + util.stringify(this.indexStartName_);\r\n            }\r\n        }\r\n        if (this.endSet_) {\r\n            qs[REST_CONSTANTS.END_AT] = util.stringify(this.indexEndValue_);\r\n            if (this.endNameSet_) {\r\n                qs[REST_CONSTANTS.END_AT] += ',' + util.stringify(this.indexEndName_);\r\n            }\r\n        }\r\n        if (this.limitSet_) {\r\n            if (this.isViewFromLeft()) {\r\n                qs[REST_CONSTANTS.LIMIT_TO_FIRST] = this.limit_;\r\n            }\r\n            else {\r\n                qs[REST_CONSTANTS.LIMIT_TO_LAST] = this.limit_;\r\n            }\r\n        }\r\n        return qs;\r\n    };\r\n    /**\r\n     * Wire Protocol Constants\r\n     * @const\r\n     * @enum {string}\r\n     * @private\r\n     */\r\n    QueryParams.WIRE_PROTOCOL_CONSTANTS_ = {\r\n        INDEX_START_VALUE: 'sp',\r\n        INDEX_START_NAME: 'sn',\r\n        INDEX_END_VALUE: 'ep',\r\n        INDEX_END_NAME: 'en',\r\n        LIMIT: 'l',\r\n        VIEW_FROM: 'vf',\r\n        VIEW_FROM_LEFT: 'l',\r\n        VIEW_FROM_RIGHT: 'r',\r\n        INDEX: 'i'\r\n    };\r\n    /**\r\n     * REST Query Constants\r\n     * @const\r\n     * @enum {string}\r\n     * @private\r\n     */\r\n    QueryParams.REST_QUERY_CONSTANTS_ = {\r\n        ORDER_BY: 'orderBy',\r\n        PRIORITY_INDEX: '$priority',\r\n        VALUE_INDEX: '$value',\r\n        KEY_INDEX: '$key',\r\n        START_AT: 'startAt',\r\n        END_AT: 'endAt',\r\n        LIMIT_TO_FIRST: 'limitToFirst',\r\n        LIMIT_TO_LAST: 'limitToLast'\r\n    };\r\n    /**\r\n     * Default, empty query parameters\r\n     * @type {!QueryParams}\r\n     * @const\r\n     */\r\n    QueryParams.DEFAULT = new QueryParams();\r\n    return QueryParams;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar Reference = /** @class */ (function (_super) {\r\n    tslib_1.__extends(Reference, _super);\r\n    /**\r\n     * Call options:\r\n     *   new Reference(Repo, Path) or\r\n     *   new Reference(url: string, string|RepoManager)\r\n     *\r\n     * Externally - this is the firebase.database.Reference type.\r\n     *\r\n     * @param {!Repo} repo\r\n     * @param {(!Path)} path\r\n     * @extends {Query}\r\n     */\r\n    function Reference(repo, path) {\r\n        var _this = this;\r\n        if (!(repo instanceof Repo)) {\r\n            throw new Error('new Reference() no longer supported - use app.database().');\r\n        }\r\n        // call Query's constructor, passing in the repo and path.\r\n        _this = _super.call(this, repo, path, QueryParams.DEFAULT, false) || this;\r\n        return _this;\r\n    }\r\n    /** @return {?string} */\r\n    Reference.prototype.getKey = function () {\r\n        util.validateArgCount('Reference.key', 0, 0, arguments.length);\r\n        if (this.path.isEmpty())\r\n            return null;\r\n        else\r\n            return this.path.getBack();\r\n    };\r\n    /**\r\n     * @param {!(string|Path)} pathString\r\n     * @return {!Reference}\r\n     */\r\n    Reference.prototype.child = function (pathString) {\r\n        util.validateArgCount('Reference.child', 1, 1, arguments.length);\r\n        if (typeof pathString === 'number') {\r\n            pathString = String(pathString);\r\n        }\r\n        else if (!(pathString instanceof Path)) {\r\n            if (this.path.getFront() === null)\r\n                validateRootPathString('Reference.child', 1, pathString, false);\r\n            else\r\n                validatePathString('Reference.child', 1, pathString, false);\r\n        }\r\n        return new Reference(this.repo, this.path.child(pathString));\r\n    };\r\n    /** @return {?Reference} */\r\n    Reference.prototype.getParent = function () {\r\n        util.validateArgCount('Reference.parent', 0, 0, arguments.length);\r\n        var parentPath = this.path.parent();\r\n        return parentPath === null ? null : new Reference(this.repo, parentPath);\r\n    };\r\n    /** @return {!Reference} */\r\n    Reference.prototype.getRoot = function () {\r\n        util.validateArgCount('Reference.root', 0, 0, arguments.length);\r\n        var ref = this;\r\n        while (ref.getParent() !== null) {\r\n            ref = ref.getParent();\r\n        }\r\n        return ref;\r\n    };\r\n    /** @return {!Database} */\r\n    Reference.prototype.databaseProp = function () {\r\n        return this.repo.database;\r\n    };\r\n    /**\r\n     * @param {*} newVal\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */\r\n    Reference.prototype.set = function (newVal, onComplete) {\r\n        util.validateArgCount('Reference.set', 1, 2, arguments.length);\r\n        validateWritablePath('Reference.set', this.path);\r\n        validateFirebaseDataArg('Reference.set', 1, newVal, this.path, false);\r\n        util.validateCallback('Reference.set', 2, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo.setWithPriority(this.path, newVal, \r\n        /*priority=*/ null, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {!Object} objectToMerge\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */\r\n    Reference.prototype.update = function (objectToMerge, onComplete) {\r\n        util.validateArgCount('Reference.update', 1, 2, arguments.length);\r\n        validateWritablePath('Reference.update', this.path);\r\n        if (Array.isArray(objectToMerge)) {\r\n            var newObjectToMerge = {};\r\n            for (var i = 0; i < objectToMerge.length; ++i) {\r\n                newObjectToMerge['' + i] = objectToMerge[i];\r\n            }\r\n            objectToMerge = newObjectToMerge;\r\n            warn('Passing an Array to Firebase.update() is deprecated. ' +\r\n                'Use set() if you want to overwrite the existing data, or ' +\r\n                'an Object with integer keys if you really do want to ' +\r\n                'only update some of the children.');\r\n        }\r\n        validateFirebaseMergeDataArg('Reference.update', 1, objectToMerge, this.path, false);\r\n        util.validateCallback('Reference.update', 2, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo.update(this.path, objectToMerge, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {*} newVal\r\n     * @param {string|number|null} newPriority\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */\r\n    Reference.prototype.setWithPriority = function (newVal, newPriority, onComplete) {\r\n        util.validateArgCount('Reference.setWithPriority', 2, 3, arguments.length);\r\n        validateWritablePath('Reference.setWithPriority', this.path);\r\n        validateFirebaseDataArg('Reference.setWithPriority', 1, newVal, this.path, false);\r\n        validatePriority('Reference.setWithPriority', 2, newPriority, false);\r\n        util.validateCallback('Reference.setWithPriority', 3, onComplete, true);\r\n        if (this.getKey() === '.length' || this.getKey() === '.keys')\r\n            throw 'Reference.setWithPriority failed: ' +\r\n                this.getKey() +\r\n                ' is a read-only object.';\r\n        var deferred = new util.Deferred();\r\n        this.repo.setWithPriority(this.path, newVal, newPriority, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */\r\n    Reference.prototype.remove = function (onComplete) {\r\n        util.validateArgCount('Reference.remove', 0, 1, arguments.length);\r\n        validateWritablePath('Reference.remove', this.path);\r\n        util.validateCallback('Reference.remove', 1, onComplete, true);\r\n        return this.set(null, onComplete);\r\n    };\r\n    /**\r\n     * @param {function(*):*} transactionUpdate\r\n     * @param {(function(?Error, boolean, ?DataSnapshot))=} onComplete\r\n     * @param {boolean=} applyLocally\r\n     * @return {!Promise}\r\n     */\r\n    Reference.prototype.transaction = function (transactionUpdate, onComplete, applyLocally) {\r\n        util.validateArgCount('Reference.transaction', 1, 3, arguments.length);\r\n        validateWritablePath('Reference.transaction', this.path);\r\n        util.validateCallback('Reference.transaction', 1, transactionUpdate, false);\r\n        util.validateCallback('Reference.transaction', 2, onComplete, true);\r\n        // NOTE: applyLocally is an internal-only option for now.  We need to decide if we want to keep it and how\r\n        // to expose it.\r\n        validateBoolean('Reference.transaction', 3, applyLocally, true);\r\n        if (this.getKey() === '.length' || this.getKey() === '.keys')\r\n            throw 'Reference.transaction failed: ' +\r\n                this.getKey() +\r\n                ' is a read-only object.';\r\n        if (applyLocally === undefined)\r\n            applyLocally = true;\r\n        var deferred = new util.Deferred();\r\n        if (typeof onComplete === 'function') {\r\n            deferred.promise.catch(function () { });\r\n        }\r\n        var promiseComplete = function (error, committed, snapshot) {\r\n            if (error) {\r\n                deferred.reject(error);\r\n            }\r\n            else {\r\n                deferred.resolve(new TransactionResult(committed, snapshot));\r\n            }\r\n            if (typeof onComplete === 'function') {\r\n                onComplete(error, committed, snapshot);\r\n            }\r\n        };\r\n        this.repo.startTransaction(this.path, transactionUpdate, promiseComplete, applyLocally);\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {string|number|null} priority\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Promise}\r\n     */\r\n    Reference.prototype.setPriority = function (priority, onComplete) {\r\n        util.validateArgCount('Reference.setPriority', 1, 2, arguments.length);\r\n        validateWritablePath('Reference.setPriority', this.path);\r\n        validatePriority('Reference.setPriority', 1, priority, false);\r\n        util.validateCallback('Reference.setPriority', 2, onComplete, true);\r\n        var deferred = new util.Deferred();\r\n        this.repo.setWithPriority(this.path.child('.priority'), priority, null, deferred.wrapCallback(onComplete));\r\n        return deferred.promise;\r\n    };\r\n    /**\r\n     * @param {*=} value\r\n     * @param {function(?Error)=} onComplete\r\n     * @return {!Reference}\r\n     */\r\n    Reference.prototype.push = function (value, onComplete) {\r\n        util.validateArgCount('Reference.push', 0, 2, arguments.length);\r\n        validateWritablePath('Reference.push', this.path);\r\n        validateFirebaseDataArg('Reference.push', 1, value, this.path, true);\r\n        util.validateCallback('Reference.push', 2, onComplete, true);\r\n        var now = this.repo.serverTime();\r\n        var name = nextPushId(now);\r\n        // push() returns a ThennableReference whose promise is fulfilled with a regular Reference.\r\n        // We use child() to create handles to two different references. The first is turned into a\r\n        // ThennableReference below by adding then() and catch() methods and is used as the\r\n        // return value of push(). The second remains a regular Reference and is used as the fulfilled\r\n        // value of the first ThennableReference.\r\n        var thennablePushRef = this.child(name);\r\n        var pushRef = this.child(name);\r\n        var promise;\r\n        if (value != null) {\r\n            promise = thennablePushRef.set(value, onComplete).then(function () { return pushRef; });\r\n        }\r\n        else {\r\n            promise = Promise.resolve(pushRef);\r\n        }\r\n        thennablePushRef.then = promise.then.bind(promise);\r\n        thennablePushRef.catch = promise.then.bind(promise, undefined);\r\n        if (typeof onComplete === 'function') {\r\n            promise.catch(function () { });\r\n        }\r\n        return thennablePushRef;\r\n    };\r\n    /**\r\n     * @return {!OnDisconnect}\r\n     */\r\n    Reference.prototype.onDisconnect = function () {\r\n        validateWritablePath('Reference.onDisconnect', this.path);\r\n        return new OnDisconnect(this.repo, this.path);\r\n    };\r\n    Object.defineProperty(Reference.prototype, \"database\", {\r\n        get: function () {\r\n            return this.databaseProp();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"key\", {\r\n        get: function () {\r\n            return this.getKey();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"parent\", {\r\n        get: function () {\r\n            return this.getParent();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"root\", {\r\n        get: function () {\r\n            return this.getRoot();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    return Reference;\r\n}(Query));\r\n/**\r\n * Define reference constructor in various modules\r\n *\r\n * We are doing this here to avoid several circular\r\n * dependency issues\r\n */\r\nQuery.__referenceConstructor = Reference;\r\nSyncPoint.__referenceConstructor = Reference;\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Node in a Tree.\r\n */\r\nvar TreeNode = /** @class */ (function () {\r\n    function TreeNode() {\r\n        // TODO: Consider making accessors that create children and value lazily or\r\n        // separate Internal / Leaf 'types'.\r\n        this.children = {};\r\n        this.childCount = 0;\r\n        this.value = null;\r\n    }\r\n    return TreeNode;\r\n}());\r\n/**\r\n * A light-weight tree, traversable by path.  Nodes can have both values and children.\r\n * Nodes are not enumerated (by forEachChild) unless they have a value or non-empty\r\n * children.\r\n */\r\nvar Tree = /** @class */ (function () {\r\n    /**\r\n     * @template T\r\n     * @param {string=} name_ Optional name of the node.\r\n     * @param {Tree=} parent_ Optional parent node.\r\n     * @param {TreeNode=} node_ Optional node to wrap.\r\n     */\r\n    function Tree(name_, parent_, node_) {\r\n        if (name_ === void 0) { name_ = ''; }\r\n        if (parent_ === void 0) { parent_ = null; }\r\n        if (node_ === void 0) { node_ = new TreeNode(); }\r\n        this.name_ = name_;\r\n        this.parent_ = parent_;\r\n        this.node_ = node_;\r\n    }\r\n    /**\r\n     * Returns a sub-Tree for the given path.\r\n     *\r\n     * @param {!(string|Path)} pathObj Path to look up.\r\n     * @return {!Tree.<T>} Tree for path.\r\n     */\r\n    Tree.prototype.subTree = function (pathObj) {\r\n        // TODO: Require pathObj to be Path?\r\n        var path = pathObj instanceof Path ? pathObj : new Path(pathObj);\r\n        var child = this, next;\r\n        while ((next = path.getFront()) !== null) {\r\n            var childNode = util.safeGet(child.node_.children, next) || new TreeNode();\r\n            child = new Tree(next, child, childNode);\r\n            path = path.popFront();\r\n        }\r\n        return child;\r\n    };\r\n    /**\r\n     * Returns the data associated with this tree node.\r\n     *\r\n     * @return {?T} The data or null if no data exists.\r\n     */\r\n    Tree.prototype.getValue = function () {\r\n        return this.node_.value;\r\n    };\r\n    /**\r\n     * Sets data to this tree node.\r\n     *\r\n     * @param {!T} value Value to set.\r\n     */\r\n    Tree.prototype.setValue = function (value) {\r\n        util.assert(typeof value !== 'undefined', 'Cannot set value to undefined');\r\n        this.node_.value = value;\r\n        this.updateParents_();\r\n    };\r\n    /**\r\n     * Clears the contents of the tree node (its value and all children).\r\n     */\r\n    Tree.prototype.clear = function () {\r\n        this.node_.value = null;\r\n        this.node_.children = {};\r\n        this.node_.childCount = 0;\r\n        this.updateParents_();\r\n    };\r\n    /**\r\n     * @return {boolean} Whether the tree has any children.\r\n     */\r\n    Tree.prototype.hasChildren = function () {\r\n        return this.node_.childCount > 0;\r\n    };\r\n    /**\r\n     * @return {boolean} Whether the tree is empty (no value or children).\r\n     */\r\n    Tree.prototype.isEmpty = function () {\r\n        return this.getValue() === null && !this.hasChildren();\r\n    };\r\n    /**\r\n     * Calls action for each child of this tree node.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called for each child.\r\n     */\r\n    Tree.prototype.forEachChild = function (action) {\r\n        var _this = this;\r\n        util.forEach(this.node_.children, function (child, childTree) {\r\n            action(new Tree(child, _this, childTree));\r\n        });\r\n    };\r\n    /**\r\n     * Does a depth-first traversal of this node's descendants, calling action for each one.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called for each child.\r\n     * @param {boolean=} includeSelf Whether to call action on this node as well. Defaults to\r\n     *   false.\r\n     * @param {boolean=} childrenFirst Whether to call action on children before calling it on\r\n     *   parent.\r\n     */\r\n    Tree.prototype.forEachDescendant = function (action, includeSelf, childrenFirst) {\r\n        if (includeSelf && !childrenFirst)\r\n            action(this);\r\n        this.forEachChild(function (child) {\r\n            child.forEachDescendant(action, /*includeSelf=*/ true, childrenFirst);\r\n        });\r\n        if (includeSelf && childrenFirst)\r\n            action(this);\r\n    };\r\n    /**\r\n     * Calls action on each ancestor node.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called on each parent; return\r\n     *   true to abort.\r\n     * @param {boolean=} includeSelf Whether to call action on this node as well.\r\n     * @return {boolean} true if the action callback returned true.\r\n     */\r\n    Tree.prototype.forEachAncestor = function (action, includeSelf) {\r\n        var node = includeSelf ? this : this.parent();\r\n        while (node !== null) {\r\n            if (action(node)) {\r\n                return true;\r\n            }\r\n            node = node.parent();\r\n        }\r\n        return false;\r\n    };\r\n    /**\r\n     * Does a depth-first traversal of this node's descendants.  When a descendant with a value\r\n     * is found, action is called on it and traversal does not continue inside the node.\r\n     * Action is *not* called on this node.\r\n     *\r\n     * @param {function(!Tree.<T>)} action Action to be called for each child.\r\n     */\r\n    Tree.prototype.forEachImmediateDescendantWithValue = function (action) {\r\n        this.forEachChild(function (child) {\r\n            if (child.getValue() !== null)\r\n                action(child);\r\n            else\r\n                child.forEachImmediateDescendantWithValue(action);\r\n        });\r\n    };\r\n    /**\r\n     * @return {!Path} The path of this tree node, as a Path.\r\n     */\r\n    Tree.prototype.path = function () {\r\n        return new Path(this.parent_ === null\r\n            ? this.name_\r\n            : this.parent_.path() + '/' + this.name_);\r\n    };\r\n    /**\r\n     * @return {string} The name of the tree node.\r\n     */\r\n    Tree.prototype.name = function () {\r\n        return this.name_;\r\n    };\r\n    /**\r\n     * @return {?Tree} The parent tree node, or null if this is the root of the tree.\r\n     */\r\n    Tree.prototype.parent = function () {\r\n        return this.parent_;\r\n    };\r\n    /**\r\n     * Adds or removes this child from its parent based on whether it's empty or not.\r\n     *\r\n     * @private\r\n     */\r\n    Tree.prototype.updateParents_ = function () {\r\n        if (this.parent_ !== null)\r\n            this.parent_.updateChild_(this.name_, this);\r\n    };\r\n    /**\r\n     * Adds or removes the passed child to this tree node, depending on whether it's empty.\r\n     *\r\n     * @param {string} childName The name of the child to update.\r\n     * @param {!Tree.<T>} child The child to update.\r\n     * @private\r\n     */\r\n    Tree.prototype.updateChild_ = function (childName, child) {\r\n        var childEmpty = child.isEmpty();\r\n        var childExists = util.contains(this.node_.children, childName);\r\n        if (childEmpty && childExists) {\r\n            delete this.node_.children[childName];\r\n            this.node_.childCount--;\r\n            this.updateParents_();\r\n        }\r\n        else if (!childEmpty && !childExists) {\r\n            this.node_.children[childName] = child.node_;\r\n            this.node_.childCount++;\r\n            this.updateParents_();\r\n        }\r\n    };\r\n    return Tree;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// TODO: This is pretty messy.  Ideally, a lot of this would move into FirebaseData, or a transaction-specific\r\n// component used by FirebaseData, but it has ties to user callbacks (transaction update and onComplete) as well\r\n// as the realtime connection (to send transactions to the server).  So that all needs to be decoupled first.\r\n// For now it's part of Repo, but in its own file.\r\n/**\r\n * @enum {number}\r\n */\r\nvar TransactionStatus;\r\n(function (TransactionStatus) {\r\n    // We've run the transaction and updated transactionResultData_ with the result, but it isn't currently sent to the\r\n    // server. A transaction will go from RUN -> SENT -> RUN if it comes back from the server as rejected due to\r\n    // mismatched hash.\r\n    TransactionStatus[TransactionStatus[\"RUN\"] = 0] = \"RUN\";\r\n    // We've run the transaction and sent it to the server and it's currently outstanding (hasn't come back as accepted\r\n    // or rejected yet).\r\n    TransactionStatus[TransactionStatus[\"SENT\"] = 1] = \"SENT\";\r\n    // Temporary state used to mark completed transactions (whether successful or aborted).  The transaction will be\r\n    // removed when we get a chance to prune completed ones.\r\n    TransactionStatus[TransactionStatus[\"COMPLETED\"] = 2] = \"COMPLETED\";\r\n    // Used when an already-sent transaction needs to be aborted (e.g. due to a conflicting set() call that was made).\r\n    // If it comes back as unsuccessful, we'll abort it.\r\n    TransactionStatus[TransactionStatus[\"SENT_NEEDS_ABORT\"] = 3] = \"SENT_NEEDS_ABORT\";\r\n    // Temporary state used to mark transactions that need to be aborted.\r\n    TransactionStatus[TransactionStatus[\"NEEDS_ABORT\"] = 4] = \"NEEDS_ABORT\";\r\n})(TransactionStatus || (TransactionStatus = {}));\r\n/**\r\n * If a transaction does not succeed after 25 retries, we abort it.  Among other things this ensure that if there's\r\n * ever a bug causing a mismatch between client / server hashes for some data, we won't retry indefinitely.\r\n * @type {number}\r\n * @const\r\n * @private\r\n */\r\nRepo.MAX_TRANSACTION_RETRIES_ = 25;\r\n/**\r\n * Setup the transaction data structures\r\n * @private\r\n */\r\nRepo.prototype.transactions_init_ = function () {\r\n    /**\r\n     * Stores queues of outstanding transactions for Firebase locations.\r\n     *\r\n     * @type {!Tree.<Array.<!Transaction>>}\r\n     * @private\r\n     */\r\n    this.transactionQueueTree_ = new Tree();\r\n};\r\n/**\r\n * Creates a new transaction, adds it to the transactions we're tracking, and sends it to the server if possible.\r\n *\r\n * @param {!Path} path Path at which to do transaction.\r\n * @param {function(*):*} transactionUpdate Update callback.\r\n * @param {?function(?Error, boolean, ?DataSnapshot)} onComplete Completion callback.\r\n * @param {boolean} applyLocally Whether or not to make intermediate results visible\r\n */\r\nRepo.prototype.startTransaction = function (path, transactionUpdate, onComplete, applyLocally) {\r\n    this.log_('transaction on ' + path);\r\n    // Add a watch to make sure we get server updates.\r\n    var valueCallback = function () { };\r\n    var watchRef = new Reference(this, path);\r\n    watchRef.on('value', valueCallback);\r\n    var unwatcher = function () {\r\n        watchRef.off('value', valueCallback);\r\n    };\r\n    // Initialize transaction.\r\n    var transaction = {\r\n        path: path,\r\n        update: transactionUpdate,\r\n        onComplete: onComplete,\r\n        // One of TransactionStatus enums.\r\n        status: null,\r\n        // Used when combining transactions at different locations to figure out which one goes first.\r\n        order: LUIDGenerator(),\r\n        // Whether to raise local events for this transaction.\r\n        applyLocally: applyLocally,\r\n        // Count of how many times we've retried the transaction.\r\n        retryCount: 0,\r\n        // Function to call to clean up our .on() listener.\r\n        unwatcher: unwatcher,\r\n        // Stores why a transaction was aborted.\r\n        abortReason: null,\r\n        currentWriteId: null,\r\n        currentInputSnapshot: null,\r\n        currentOutputSnapshotRaw: null,\r\n        currentOutputSnapshotResolved: null\r\n    };\r\n    // Run transaction initially.\r\n    var currentState = this.getLatestState_(path);\r\n    transaction.currentInputSnapshot = currentState;\r\n    var newVal = transaction.update(currentState.val());\r\n    if (newVal === undefined) {\r\n        // Abort transaction.\r\n        transaction.unwatcher();\r\n        transaction.currentOutputSnapshotRaw = null;\r\n        transaction.currentOutputSnapshotResolved = null;\r\n        if (transaction.onComplete) {\r\n            // We just set the input snapshot, so this cast should be safe\r\n            var snapshot = new DataSnapshot(transaction.currentInputSnapshot, new Reference(this, transaction.path), PRIORITY_INDEX);\r\n            transaction.onComplete(null, false, snapshot);\r\n        }\r\n    }\r\n    else {\r\n        validateFirebaseData('transaction failed: Data returned ', newVal, transaction.path);\r\n        // Mark as run and add to our queue.\r\n        transaction.status = TransactionStatus.RUN;\r\n        var queueNode = this.transactionQueueTree_.subTree(path);\r\n        var nodeQueue = queueNode.getValue() || [];\r\n        nodeQueue.push(transaction);\r\n        queueNode.setValue(nodeQueue);\r\n        // Update visibleData and raise events\r\n        // Note: We intentionally raise events after updating all of our transaction state, since the user could\r\n        // start new transactions from the event callbacks.\r\n        var priorityForNode = void 0;\r\n        if (typeof newVal === 'object' &&\r\n            newVal !== null &&\r\n            util.contains(newVal, '.priority')) {\r\n            priorityForNode = util.safeGet(newVal, '.priority');\r\n            util.assert(isValidPriority(priorityForNode), 'Invalid priority returned by transaction. ' +\r\n                'Priority must be a valid string, finite number, server value, or null.');\r\n        }\r\n        else {\r\n            var currentNode = this.serverSyncTree_.calcCompleteEventCache(path) ||\r\n                ChildrenNode.EMPTY_NODE;\r\n            priorityForNode = currentNode.getPriority().val();\r\n        }\r\n        priorityForNode /** @type {null|number|string} */ = priorityForNode;\r\n        var serverValues = this.generateServerValues();\r\n        var newNodeUnresolved = nodeFromJSON$1(newVal, priorityForNode);\r\n        var newNode = resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);\r\n        transaction.currentOutputSnapshotRaw = newNodeUnresolved;\r\n        transaction.currentOutputSnapshotResolved = newNode;\r\n        transaction.currentWriteId = this.getNextWriteId_();\r\n        var events = this.serverSyncTree_.applyUserOverwrite(path, newNode, transaction.currentWriteId, transaction.applyLocally);\r\n        this.eventQueue_.raiseEventsForChangedPath(path, events);\r\n        this.sendReadyTransactions_();\r\n    }\r\n};\r\n/**\r\n * @param {!Path} path\r\n * @param {Array.<number>=} excludeSets A specific set to exclude\r\n * @return {Node}\r\n * @private\r\n */\r\nRepo.prototype.getLatestState_ = function (path, excludeSets) {\r\n    return (this.serverSyncTree_.calcCompleteEventCache(path, excludeSets) ||\r\n        ChildrenNode.EMPTY_NODE);\r\n};\r\n/**\r\n * Sends any already-run transactions that aren't waiting for outstanding transactions to\r\n * complete.\r\n *\r\n * Externally it's called with no arguments, but it calls itself recursively with a particular\r\n * transactionQueueTree node to recurse through the tree.\r\n *\r\n * @param {Tree.<Array.<Transaction>>=} node  transactionQueueTree node to start at.\r\n * @private\r\n */\r\nRepo.prototype.sendReadyTransactions_ = function (node) {\r\n    var _this = this;\r\n    if (node === void 0) { node = this.transactionQueueTree_; }\r\n    // Before recursing, make sure any completed transactions are removed.\r\n    if (!node) {\r\n        this.pruneCompletedTransactionsBelowNode_(node);\r\n    }\r\n    if (node.getValue() !== null) {\r\n        var queue = this.buildTransactionQueue_(node);\r\n        util.assert(queue.length > 0, 'Sending zero length transaction queue');\r\n        var allRun = queue.every(function (transaction) { return transaction.status === TransactionStatus.RUN; });\r\n        // If they're all run (and not sent), we can send them.  Else, we must wait.\r\n        if (allRun) {\r\n            this.sendTransactionQueue_(node.path(), queue);\r\n        }\r\n    }\r\n    else if (node.hasChildren()) {\r\n        node.forEachChild(function (childNode) {\r\n            _this.sendReadyTransactions_(childNode);\r\n        });\r\n    }\r\n};\r\n/**\r\n * Given a list of run transactions, send them to the server and then handle the result (success or failure).\r\n *\r\n * @param {!Path} path The location of the queue.\r\n * @param {!Array.<Transaction>} queue Queue of transactions under the specified location.\r\n * @private\r\n */\r\nRepo.prototype.sendTransactionQueue_ = function (path, queue) {\r\n    var _this = this;\r\n    // Mark transactions as sent and increment retry count!\r\n    var setsToIgnore = queue.map(function (txn) {\r\n        return txn.currentWriteId;\r\n    });\r\n    var latestState = this.getLatestState_(path, setsToIgnore);\r\n    var snapToSend = latestState;\r\n    var latestHash = latestState.hash();\r\n    for (var i = 0; i < queue.length; i++) {\r\n        var txn = queue[i];\r\n        util.assert(txn.status === TransactionStatus.RUN, 'tryToSendTransactionQueue_: items in queue should all be run.');\r\n        txn.status = TransactionStatus.SENT;\r\n        txn.retryCount++;\r\n        var relativePath = Path.relativePath(path, txn.path);\r\n        // If we've gotten to this point, the output snapshot must be defined.\r\n        snapToSend = snapToSend.updateChild(relativePath /**@type {!Node} */, txn.currentOutputSnapshotRaw);\r\n    }\r\n    var dataToSend = snapToSend.val(true);\r\n    var pathToSend = path;\r\n    // Send the put.\r\n    this.server_.put(pathToSend.toString(), dataToSend, function (status) {\r\n        _this.log_('transaction put response', {\r\n            path: pathToSend.toString(),\r\n            status: status\r\n        });\r\n        var events = [];\r\n        if (status === 'ok') {\r\n            // Queue up the callbacks and fire them after cleaning up all of our transaction state, since\r\n            // the callback could trigger more transactions or sets.\r\n            var callbacks = [];\r\n            for (var i = 0; i < queue.length; i++) {\r\n                queue[i].status = TransactionStatus.COMPLETED;\r\n                events = events.concat(_this.serverSyncTree_.ackUserWrite(queue[i].currentWriteId));\r\n                if (queue[i].onComplete) {\r\n                    // We never unset the output snapshot, and given that this transaction is complete, it should be set\r\n                    var node = queue[i].currentOutputSnapshotResolved;\r\n                    var ref = new Reference(_this, queue[i].path);\r\n                    var snapshot = new DataSnapshot(node, ref, PRIORITY_INDEX);\r\n                    callbacks.push(queue[i].onComplete.bind(null, null, true, snapshot));\r\n                }\r\n                queue[i].unwatcher();\r\n            }\r\n            // Now remove the completed transactions.\r\n            _this.pruneCompletedTransactionsBelowNode_(_this.transactionQueueTree_.subTree(path));\r\n            // There may be pending transactions that we can now send.\r\n            _this.sendReadyTransactions_();\r\n            _this.eventQueue_.raiseEventsForChangedPath(path, events);\r\n            // Finally, trigger onComplete callbacks.\r\n            for (var i = 0; i < callbacks.length; i++) {\r\n                exceptionGuard(callbacks[i]);\r\n            }\r\n        }\r\n        else {\r\n            // transactions are no longer sent.  Update their status appropriately.\r\n            if (status === 'datastale') {\r\n                for (var i = 0; i < queue.length; i++) {\r\n                    if (queue[i].status === TransactionStatus.SENT_NEEDS_ABORT)\r\n                        queue[i].status = TransactionStatus.NEEDS_ABORT;\r\n                    else\r\n                        queue[i].status = TransactionStatus.RUN;\r\n                }\r\n            }\r\n            else {\r\n                warn('transaction at ' + pathToSend.toString() + ' failed: ' + status);\r\n                for (var i = 0; i < queue.length; i++) {\r\n                    queue[i].status = TransactionStatus.NEEDS_ABORT;\r\n                    queue[i].abortReason = status;\r\n                }\r\n            }\r\n            _this.rerunTransactions_(path);\r\n        }\r\n    }, latestHash);\r\n};\r\n/**\r\n * Finds all transactions dependent on the data at changedPath and reruns them.\r\n *\r\n * Should be called any time cached data changes.\r\n *\r\n * Return the highest path that was affected by rerunning transactions.  This is the path at which events need to\r\n * be raised for.\r\n *\r\n * @param {!Path} changedPath The path in mergedData that changed.\r\n * @return {!Path} The rootmost path that was affected by rerunning transactions.\r\n * @private\r\n */\r\nRepo.prototype.rerunTransactions_ = function (changedPath) {\r\n    var rootMostTransactionNode = this.getAncestorTransactionNode_(changedPath);\r\n    var path = rootMostTransactionNode.path();\r\n    var queue = this.buildTransactionQueue_(rootMostTransactionNode);\r\n    this.rerunTransactionQueue_(queue, path);\r\n    return path;\r\n};\r\n/**\r\n * Does all the work of rerunning transactions (as well as cleans up aborted transactions and whatnot).\r\n *\r\n * @param {Array.<Transaction>} queue The queue of transactions to run.\r\n * @param {!Path} path The path the queue is for.\r\n * @private\r\n */\r\nRepo.prototype.rerunTransactionQueue_ = function (queue, path) {\r\n    if (queue.length === 0) {\r\n        return; // Nothing to do!\r\n    }\r\n    // Queue up the callbacks and fire them after cleaning up all of our transaction state, since\r\n    // the callback could trigger more transactions or sets.\r\n    var callbacks = [];\r\n    var events = [];\r\n    // Ignore all of the sets we're going to re-run.\r\n    var txnsToRerun = queue.filter(function (q) {\r\n        return q.status === TransactionStatus.RUN;\r\n    });\r\n    var setsToIgnore = txnsToRerun.map(function (q) {\r\n        return q.currentWriteId;\r\n    });\r\n    for (var i = 0; i < queue.length; i++) {\r\n        var transaction = queue[i];\r\n        var relativePath = Path.relativePath(path, transaction.path);\r\n        var abortTransaction = false, abortReason = void 0;\r\n        util.assert(relativePath !== null, 'rerunTransactionsUnderNode_: relativePath should not be null.');\r\n        if (transaction.status === TransactionStatus.NEEDS_ABORT) {\r\n            abortTransaction = true;\r\n            abortReason = transaction.abortReason;\r\n            events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));\r\n        }\r\n        else if (transaction.status === TransactionStatus.RUN) {\r\n            if (transaction.retryCount >= Repo.MAX_TRANSACTION_RETRIES_) {\r\n                abortTransaction = true;\r\n                abortReason = 'maxretry';\r\n                events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));\r\n            }\r\n            else {\r\n                // This code reruns a transaction\r\n                var currentNode = this.getLatestState_(transaction.path, setsToIgnore);\r\n                transaction.currentInputSnapshot = currentNode;\r\n                var newData = queue[i].update(currentNode.val());\r\n                if (newData !== undefined) {\r\n                    validateFirebaseData('transaction failed: Data returned ', newData, transaction.path);\r\n                    var newDataNode = nodeFromJSON$1(newData);\r\n                    var hasExplicitPriority = typeof newData === 'object' &&\r\n                        newData != null &&\r\n                        util.contains(newData, '.priority');\r\n                    if (!hasExplicitPriority) {\r\n                        // Keep the old priority if there wasn't a priority explicitly specified.\r\n                        newDataNode = newDataNode.updatePriority(currentNode.getPriority());\r\n                    }\r\n                    var oldWriteId = transaction.currentWriteId;\r\n                    var serverValues = this.generateServerValues();\r\n                    var newNodeResolved = resolveDeferredValueSnapshot(newDataNode, serverValues);\r\n                    transaction.currentOutputSnapshotRaw = newDataNode;\r\n                    transaction.currentOutputSnapshotResolved = newNodeResolved;\r\n                    transaction.currentWriteId = this.getNextWriteId_();\r\n                    // Mutates setsToIgnore in place\r\n                    setsToIgnore.splice(setsToIgnore.indexOf(oldWriteId), 1);\r\n                    events = events.concat(this.serverSyncTree_.applyUserOverwrite(transaction.path, newNodeResolved, transaction.currentWriteId, transaction.applyLocally));\r\n                    events = events.concat(this.serverSyncTree_.ackUserWrite(oldWriteId, true));\r\n                }\r\n                else {\r\n                    abortTransaction = true;\r\n                    abortReason = 'nodata';\r\n                    events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));\r\n                }\r\n            }\r\n        }\r\n        this.eventQueue_.raiseEventsForChangedPath(path, events);\r\n        events = [];\r\n        if (abortTransaction) {\r\n            // Abort.\r\n            queue[i].status = TransactionStatus.COMPLETED;\r\n            // Removing a listener can trigger pruning which can muck with mergedData/visibleData (as it prunes data).\r\n            // So defer the unwatcher until we're done.\r\n            (function (unwatcher) {\r\n                setTimeout(unwatcher, Math.floor(0));\r\n            })(queue[i].unwatcher);\r\n            if (queue[i].onComplete) {\r\n                if (abortReason === 'nodata') {\r\n                    var ref = new Reference(this, queue[i].path);\r\n                    // We set this field immediately, so it's safe to cast to an actual snapshot\r\n                    var lastInput /** @type {!Node} */ = queue[i].currentInputSnapshot;\r\n                    var snapshot = new DataSnapshot(lastInput, ref, PRIORITY_INDEX);\r\n                    callbacks.push(queue[i].onComplete.bind(null, null, false, snapshot));\r\n                }\r\n                else {\r\n                    callbacks.push(queue[i].onComplete.bind(null, new Error(abortReason), false, null));\r\n                }\r\n            }\r\n        }\r\n    }\r\n    // Clean up completed transactions.\r\n    this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);\r\n    // Now fire callbacks, now that we're in a good, known state.\r\n    for (var i = 0; i < callbacks.length; i++) {\r\n        exceptionGuard(callbacks[i]);\r\n    }\r\n    // Try to send the transaction result to the server.\r\n    this.sendReadyTransactions_();\r\n};\r\n/**\r\n * Returns the rootmost ancestor node of the specified path that has a pending transaction on it, or just returns\r\n * the node for the given path if there are no pending transactions on any ancestor.\r\n *\r\n * @param {!Path} path The location to start at.\r\n * @return {!Tree.<Array.<!Transaction>>} The rootmost node with a transaction.\r\n * @private\r\n */\r\nRepo.prototype.getAncestorTransactionNode_ = function (path) {\r\n    var front;\r\n    // Start at the root and walk deeper into the tree towards path until we find a node with pending transactions.\r\n    var transactionNode = this.transactionQueueTree_;\r\n    while ((front = path.getFront()) !== null &&\r\n        transactionNode.getValue() === null) {\r\n        transactionNode = transactionNode.subTree(front);\r\n        path = path.popFront();\r\n    }\r\n    return transactionNode;\r\n};\r\n/**\r\n * Builds the queue of all transactions at or below the specified transactionNode.\r\n *\r\n * @param {!Tree.<Array.<Transaction>>} transactionNode\r\n * @return {Array.<Transaction>} The generated queue.\r\n * @private\r\n */\r\nRepo.prototype.buildTransactionQueue_ = function (transactionNode) {\r\n    // Walk any child transaction queues and aggregate them into a single queue.\r\n    var transactionQueue = [];\r\n    this.aggregateTransactionQueuesForNode_(transactionNode, transactionQueue);\r\n    // Sort them by the order the transactions were created.\r\n    transactionQueue.sort(function (a, b) {\r\n        return a.order - b.order;\r\n    });\r\n    return transactionQueue;\r\n};\r\n/**\r\n * @param {!Tree.<Array.<Transaction>>} node\r\n * @param {Array.<Transaction>} queue\r\n * @private\r\n */\r\nRepo.prototype.aggregateTransactionQueuesForNode_ = function (node, queue) {\r\n    var _this = this;\r\n    var nodeQueue = node.getValue();\r\n    if (nodeQueue !== null) {\r\n        for (var i = 0; i < nodeQueue.length; i++) {\r\n            queue.push(nodeQueue[i]);\r\n        }\r\n    }\r\n    node.forEachChild(function (child) {\r\n        _this.aggregateTransactionQueuesForNode_(child, queue);\r\n    });\r\n};\r\n/**\r\n * Remove COMPLETED transactions at or below this node in the transactionQueueTree_.\r\n *\r\n * @param {!Tree.<Array.<!Transaction>>} node\r\n * @private\r\n */\r\nRepo.prototype.pruneCompletedTransactionsBelowNode_ = function (node) {\r\n    var _this = this;\r\n    var queue = node.getValue();\r\n    if (queue) {\r\n        var to = 0;\r\n        for (var from = 0; from < queue.length; from++) {\r\n            if (queue[from].status !== TransactionStatus.COMPLETED) {\r\n                queue[to] = queue[from];\r\n                to++;\r\n            }\r\n        }\r\n        queue.length = to;\r\n        node.setValue(queue.length > 0 ? queue : null);\r\n    }\r\n    node.forEachChild(function (childNode) {\r\n        _this.pruneCompletedTransactionsBelowNode_(childNode);\r\n    });\r\n};\r\n/**\r\n * Aborts all transactions on ancestors or descendants of the specified path.  Called when doing a set() or update()\r\n * since we consider them incompatible with transactions.\r\n *\r\n * @param {!Path} path Path for which we want to abort related transactions.\r\n * @return {!Path}\r\n * @private\r\n */\r\nRepo.prototype.abortTransactions_ = function (path) {\r\n    var _this = this;\r\n    var affectedPath = this.getAncestorTransactionNode_(path).path();\r\n    var transactionNode = this.transactionQueueTree_.subTree(path);\r\n    transactionNode.forEachAncestor(function (node) {\r\n        _this.abortTransactionsOnNode_(node);\r\n    });\r\n    this.abortTransactionsOnNode_(transactionNode);\r\n    transactionNode.forEachDescendant(function (node) {\r\n        _this.abortTransactionsOnNode_(node);\r\n    });\r\n    return affectedPath;\r\n};\r\n/**\r\n * Abort transactions stored in this transaction queue node.\r\n *\r\n * @param {!Tree.<Array.<Transaction>>} node Node to abort transactions for.\r\n * @private\r\n */\r\nRepo.prototype.abortTransactionsOnNode_ = function (node) {\r\n    var queue = node.getValue();\r\n    if (queue !== null) {\r\n        // Queue up the callbacks and fire them after cleaning up all of our transaction state, since\r\n        // the callback could trigger more transactions or sets.\r\n        var callbacks = [];\r\n        // Go through queue.  Any already-sent transactions must be marked for abort, while the unsent ones\r\n        // can be immediately aborted and removed.\r\n        var events = [];\r\n        var lastSent = -1;\r\n        for (var i = 0; i < queue.length; i++) {\r\n            if (queue[i].status === TransactionStatus.SENT_NEEDS_ABORT) ;\r\n            else if (queue[i].status === TransactionStatus.SENT) {\r\n                util.assert(lastSent === i - 1, 'All SENT items should be at beginning of queue.');\r\n                lastSent = i;\r\n                // Mark transaction for abort when it comes back.\r\n                queue[i].status = TransactionStatus.SENT_NEEDS_ABORT;\r\n                queue[i].abortReason = 'set';\r\n            }\r\n            else {\r\n                util.assert(queue[i].status === TransactionStatus.RUN, 'Unexpected transaction status in abort');\r\n                // We can abort it immediately.\r\n                queue[i].unwatcher();\r\n                events = events.concat(this.serverSyncTree_.ackUserWrite(queue[i].currentWriteId, true));\r\n                if (queue[i].onComplete) {\r\n                    var snapshot = null;\r\n                    callbacks.push(queue[i].onComplete.bind(null, new Error('set'), false, snapshot));\r\n                }\r\n            }\r\n        }\r\n        if (lastSent === -1) {\r\n            // We're not waiting for any sent transactions.  We can clear the queue.\r\n            node.setValue(null);\r\n        }\r\n        else {\r\n            // Remove the transactions we aborted.\r\n            queue.length = lastSent + 1;\r\n        }\r\n        // Now fire the callbacks.\r\n        this.eventQueue_.raiseEventsForChangedPath(node.path(), events);\r\n        for (var i = 0; i < callbacks.length; i++) {\r\n            exceptionGuard(callbacks[i]);\r\n        }\r\n    }\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/** @const {string} */\r\nvar DATABASE_URL_OPTION = 'databaseURL';\r\nvar _staticInstance;\r\n/**\r\n * Creates and caches Repo instances.\r\n */\r\nvar RepoManager = /** @class */ (function () {\r\n    function RepoManager() {\r\n        /**\r\n         * @private {!Object.<string, Object<string, !fb.core.Repo>>}\r\n         */\r\n        this.repos_ = {};\r\n        /**\r\n         * If true, new Repos will be created to use ReadonlyRestClient (for testing purposes).\r\n         * @private {boolean}\r\n         */\r\n        this.useRestClient_ = false;\r\n    }\r\n    RepoManager.getInstance = function () {\r\n        if (!_staticInstance) {\r\n            _staticInstance = new RepoManager();\r\n        }\r\n        return _staticInstance;\r\n    };\r\n    // TODO(koss): Remove these functions unless used in tests?\r\n    RepoManager.prototype.interrupt = function () {\r\n        for (var appName in this.repos_) {\r\n            for (var dbUrl in this.repos_[appName]) {\r\n                this.repos_[appName][dbUrl].interrupt();\r\n            }\r\n        }\r\n    };\r\n    RepoManager.prototype.resume = function () {\r\n        for (var appName in this.repos_) {\r\n            for (var dbUrl in this.repos_[appName]) {\r\n                this.repos_[appName][dbUrl].resume();\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * This function should only ever be called to CREATE a new database instance.\r\n     *\r\n     * @param {!FirebaseApp} app\r\n     * @return {!Database}\r\n     */\r\n    RepoManager.prototype.databaseFromApp = function (app, url) {\r\n        var dbUrl = url || app.options[DATABASE_URL_OPTION];\r\n        if (dbUrl === undefined) {\r\n            fatal(\"Can't determine Firebase Database URL.  Be sure to include \" +\r\n                DATABASE_URL_OPTION +\r\n                ' option when calling firebase.initializeApp().');\r\n        }\r\n        var parsedUrl = parseRepoInfo(dbUrl);\r\n        var repoInfo = parsedUrl.repoInfo;\r\n        validateUrl('Invalid Firebase Database URL', 1, parsedUrl);\r\n        if (!parsedUrl.path.isEmpty()) {\r\n            fatal('Database URL must point to the root of a Firebase Database ' +\r\n                '(not including a child path).');\r\n        }\r\n        var repo = this.createRepo(repoInfo, app);\r\n        return repo.database;\r\n    };\r\n    /**\r\n     * Remove the repo and make sure it is disconnected.\r\n     *\r\n     * @param {!Repo} repo\r\n     */\r\n    RepoManager.prototype.deleteRepo = function (repo) {\r\n        var appRepos = util.safeGet(this.repos_, repo.app.name);\r\n        // This should never happen...\r\n        if (!appRepos || util.safeGet(appRepos, repo.repoInfo_.toURLString()) !== repo) {\r\n            fatal(\"Database \" + repo.app.name + \"(\" + repo.repoInfo_ + \") has already been deleted.\");\r\n        }\r\n        repo.interrupt();\r\n        delete appRepos[repo.repoInfo_.toURLString()];\r\n    };\r\n    /**\r\n     * Ensures a repo doesn't already exist and then creates one using the\r\n     * provided app.\r\n     *\r\n     * @param {!RepoInfo} repoInfo The metadata about the Repo\r\n     * @param {!FirebaseApp} app\r\n     * @return {!Repo} The Repo object for the specified server / repoName.\r\n     */\r\n    RepoManager.prototype.createRepo = function (repoInfo, app) {\r\n        var appRepos = util.safeGet(this.repos_, app.name);\r\n        if (!appRepos) {\r\n            appRepos = {};\r\n            this.repos_[app.name] = appRepos;\r\n        }\r\n        var repo = util.safeGet(appRepos, repoInfo.toURLString());\r\n        if (repo) {\r\n            fatal('Database initialized multiple times. Please make sure the format of the database URL matches with each database() call.');\r\n        }\r\n        repo = new Repo(repoInfo, this.useRestClient_, app);\r\n        appRepos[repoInfo.toURLString()] = repo;\r\n        return repo;\r\n    };\r\n    /**\r\n     * Forces us to use ReadonlyRestClient instead of PersistentConnection for new Repos.\r\n     * @param {boolean} forceRestClient\r\n     */\r\n    RepoManager.prototype.forceRestClient = function (forceRestClient) {\r\n        this.useRestClient_ = forceRestClient;\r\n    };\r\n    return RepoManager;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Class representing a firebase database.\r\n * @implements {FirebaseService}\r\n */\r\nvar Database = /** @class */ (function () {\r\n    /**\r\n     * The constructor should not be called by users of our public API.\r\n     * @param {!Repo} repo_\r\n     */\r\n    function Database(repo_) {\r\n        this.repo_ = repo_;\r\n        if (!(repo_ instanceof Repo)) {\r\n            fatal(\"Don't call new Database() directly - please use firebase.database().\");\r\n        }\r\n        /** @type {Reference} */\r\n        this.root_ = new Reference(repo_, Path.Empty);\r\n        this.INTERNAL = new DatabaseInternals(this);\r\n    }\r\n    Object.defineProperty(Database.prototype, \"app\", {\r\n        get: function () {\r\n            return this.repo_.app;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Database.prototype.ref = function (path) {\r\n        this.checkDeleted_('ref');\r\n        util.validateArgCount('database.ref', 0, 1, arguments.length);\r\n        if (path instanceof Reference) {\r\n            return this.refFromURL(path.toString());\r\n        }\r\n        return path !== undefined ? this.root_.child(path) : this.root_;\r\n    };\r\n    /**\r\n     * Returns a reference to the root or the path specified in url.\r\n     * We throw a exception if the url is not in the same domain as the\r\n     * current repo.\r\n     * @param {string} url\r\n     * @return {!Reference} Firebase reference.\r\n     */\r\n    Database.prototype.refFromURL = function (url) {\r\n        /** @const {string} */\r\n        var apiName = 'database.refFromURL';\r\n        this.checkDeleted_(apiName);\r\n        util.validateArgCount(apiName, 1, 1, arguments.length);\r\n        var parsedURL = parseRepoInfo(url);\r\n        validateUrl(apiName, 1, parsedURL);\r\n        var repoInfo = parsedURL.repoInfo;\r\n        if (repoInfo.host !== this.repo_.repoInfo_.host) {\r\n            fatal(apiName +\r\n                ': Host name does not match the current database: ' +\r\n                '(found ' +\r\n                repoInfo.host +\r\n                ' but expected ' +\r\n                this.repo_.repoInfo_.host +\r\n                ')');\r\n        }\r\n        return this.ref(parsedURL.path.toString());\r\n    };\r\n    /**\r\n     * @param {string} apiName\r\n     */\r\n    Database.prototype.checkDeleted_ = function (apiName) {\r\n        if (this.repo_ === null) {\r\n            fatal('Cannot call ' + apiName + ' on a deleted database.');\r\n        }\r\n    };\r\n    // Make individual repo go offline.\r\n    Database.prototype.goOffline = function () {\r\n        util.validateArgCount('database.goOffline', 0, 0, arguments.length);\r\n        this.checkDeleted_('goOffline');\r\n        this.repo_.interrupt();\r\n    };\r\n    Database.prototype.goOnline = function () {\r\n        util.validateArgCount('database.goOnline', 0, 0, arguments.length);\r\n        this.checkDeleted_('goOnline');\r\n        this.repo_.resume();\r\n    };\r\n    Database.ServerValue = {\r\n        TIMESTAMP: {\r\n            '.sv': 'timestamp'\r\n        }\r\n    };\r\n    return Database;\r\n}());\r\nvar DatabaseInternals = /** @class */ (function () {\r\n    /** @param {!Database} database */\r\n    function DatabaseInternals(database) {\r\n        this.database = database;\r\n    }\r\n    /** @return {Promise<void>} */\r\n    DatabaseInternals.prototype.delete = function () {\r\n        return tslib_1.__awaiter(this, void 0, void 0, function () {\r\n            return tslib_1.__generator(this, function (_a) {\r\n                this.database.checkDeleted_('delete');\r\n                RepoManager.getInstance().deleteRepo(this.database.repo_);\r\n                this.database.repo_ = null;\r\n                this.database.root_ = null;\r\n                this.database.INTERNAL = null;\r\n                this.database = null;\r\n                return [2 /*return*/];\r\n            });\r\n        });\r\n    };\r\n    return DatabaseInternals;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * INTERNAL methods for internal-use only (tests, etc.).\r\n *\r\n * Customers shouldn't use these or else should be aware that they could break at any time.\r\n *\r\n * @const\r\n */\r\nvar forceLongPolling = function () {\r\n    WebSocketConnection.forceDisallow();\r\n    BrowserPollConnection.forceAllow();\r\n};\r\nvar forceWebSockets = function () {\r\n    BrowserPollConnection.forceDisallow();\r\n};\r\n/* Used by App Manager */\r\nvar isWebSocketsAvailable = function () {\r\n    return WebSocketConnection['isAvailable']();\r\n};\r\nvar setSecurityDebugCallback = function (ref, callback) {\r\n    ref.repo.persistentConnection_.securityDebugCallback_ = callback;\r\n};\r\nvar stats = function (ref, showDelta) {\r\n    ref.repo.stats(showDelta);\r\n};\r\nvar statsIncrementCounter = function (ref, metric) {\r\n    ref.repo.statsIncrementCounter(metric);\r\n};\r\nvar dataUpdateCount = function (ref) {\r\n    return ref.repo.dataUpdateCount;\r\n};\r\nvar interceptServerData = function (ref, callback) {\r\n    return ref.repo.interceptServerData_(callback);\r\n};\n\nvar INTERNAL = /*#__PURE__*/Object.freeze({\n  forceLongPolling: forceLongPolling,\n  forceWebSockets: forceWebSockets,\n  isWebSocketsAvailable: isWebSocketsAvailable,\n  setSecurityDebugCallback: setSecurityDebugCallback,\n  stats: stats,\n  statsIncrementCounter: statsIncrementCounter,\n  dataUpdateCount: dataUpdateCount,\n  interceptServerData: interceptServerData\n});\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar DataConnection = PersistentConnection;\r\n/**\r\n * @param {!string} pathString\r\n * @param {function(*)} onComplete\r\n */\r\nPersistentConnection.prototype.simpleListen = function (pathString, onComplete) {\r\n    this.sendRequest('q', { p: pathString }, onComplete);\r\n};\r\n/**\r\n * @param {*} data\r\n * @param {function(*)} onEcho\r\n */\r\nPersistentConnection.prototype.echo = function (data, onEcho) {\r\n    this.sendRequest('echo', { d: data }, onEcho);\r\n};\r\n// RealTimeConnection properties that we use in tests.\r\nvar RealTimeConnection = Connection;\r\n/**\r\n * @param {function(): string} newHash\r\n * @return {function()}\r\n */\r\nvar hijackHash = function (newHash) {\r\n    var oldPut = PersistentConnection.prototype.put;\r\n    PersistentConnection.prototype.put = function (pathString, data, opt_onComplete, opt_hash) {\r\n        if (opt_hash !== undefined) {\r\n            opt_hash = newHash();\r\n        }\r\n        oldPut.call(this, pathString, data, opt_onComplete, opt_hash);\r\n    };\r\n    return function () {\r\n        PersistentConnection.prototype.put = oldPut;\r\n    };\r\n};\r\n/**\r\n * @type {function(new:RepoInfo, !string, boolean, !string, boolean): undefined}\r\n */\r\nvar ConnectionTarget = RepoInfo;\r\n/**\r\n * @param {!Query} query\r\n * @return {!string}\r\n */\r\nvar queryIdentifier = function (query) {\r\n    return query.queryIdentifier();\r\n};\r\n/**\r\n * @param {!Query} firebaseRef\r\n * @return {!Object}\r\n */\r\nvar listens = function (firebaseRef) {\r\n    return firebaseRef.repo.persistentConnection_.listens_;\r\n};\r\n/**\r\n * Forces the RepoManager to create Repos that use ReadonlyRestClient instead of PersistentConnection.\r\n *\r\n * @param {boolean} forceRestClient\r\n */\r\nvar forceRestClient = function (forceRestClient) {\r\n    RepoManager.getInstance().forceRestClient(forceRestClient);\r\n};\n\nvar TEST_ACCESS = /*#__PURE__*/Object.freeze({\n  DataConnection: DataConnection,\n  RealTimeConnection: RealTimeConnection,\n  hijackHash: hijackHash,\n  ConnectionTarget: ConnectionTarget,\n  queryIdentifier: queryIdentifier,\n  listens: listens,\n  forceRestClient: forceRestClient\n});\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar ServerValue = Database.ServerValue;\r\nfunction registerDatabase(instance) {\r\n    // Register the Database Service with the 'firebase' namespace.\r\n    var namespace = instance.INTERNAL.registerService('database', function (app, unused, url) { return RepoManager.getInstance().databaseFromApp(app, url); }, \r\n    // firebase.database namespace properties\r\n    {\r\n        Reference: Reference,\r\n        Query: Query,\r\n        Database: Database,\r\n        enableLogging: enableLogging,\r\n        INTERNAL: INTERNAL,\r\n        ServerValue: ServerValue,\r\n        TEST_ACCESS: TEST_ACCESS\r\n    }, null, true);\r\n    if (util.isNodeSdk()) {\r\n        module.exports = namespace;\r\n    }\r\n}\r\nregisterDatabase(firebase);\n\nexports.registerDatabase = registerDatabase;\nexports.Database = Database;\nexports.Query = Query;\nexports.Reference = Reference;\nexports.enableLogging = enableLogging;\nexports.ServerValue = ServerValue;\nexports.DataSnapshot = DataSnapshot;\nexports.OnDisconnect = OnDisconnect;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/database/dist/index.cjs.js","var document = require('./_global').document;\nmodule.exports = document && document.documentElement;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_html.js","'use strict';\nvar addToUnscopables = require('./_add-to-unscopables');\nvar step = require('./_iter-step');\nvar Iterators = require('./_iterators');\nvar toIObject = require('./_to-iobject');\n\n// 22.1.3.4 Array.prototype.entries()\n// 22.1.3.13 Array.prototype.keys()\n// 22.1.3.29 Array.prototype.values()\n// 22.1.3.30 Array.prototype[@@iterator]()\nmodule.exports = require('./_iter-define')(Array, 'Array', function (iterated, kind) {\n  this._t = toIObject(iterated); // target\n  this._i = 0;                   // next index\n  this._k = kind;                // kind\n// 22.1.5.2.1 %ArrayIteratorPrototype%.next()\n}, function () {\n  var O = this._t;\n  var kind = this._k;\n  var index = this._i++;\n  if (!O || index >= O.length) {\n    this._t = undefined;\n    return step(1);\n  }\n  if (kind == 'keys') return step(0, index);\n  if (kind == 'values') return step(0, O[index]);\n  return step(0, [index, O[index]]);\n}, 'values');\n\n// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)\nIterators.Arguments = Iterators.Array;\n\naddToUnscopables('keys');\naddToUnscopables('values');\naddToUnscopables('entries');\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.array.iterator.js","'use strict';\n// 22.1.3.8 Array.prototype.find(predicate, thisArg = undefined)\nvar $export = require('./_export');\nvar $find = require('./_array-methods')(5);\nvar KEY = 'find';\nvar forced = true;\n// Shouldn't skip holes\nif (KEY in []) Array(1)[KEY](function () { forced = false; });\n$export($export.P + $export.F * forced, 'Array', {\n  find: function find(callbackfn /* , that = undefined */) {\n    return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n  }\n});\nrequire('./_add-to-unscopables')(KEY);\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.array.find.js","var toString = {}.toString;\n\nmodule.exports = function (it) {\n  return toString.call(it).slice(8, -1);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_cof.js","exports.f = require('./_wks');\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_wks-ext.js","'use strict';\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nvar tslib_1 = require('tslib');\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview Firebase constants.  Some of these (@defines) can be overridden at compile-time.\r\n */\r\nvar CONSTANTS = {\r\n    /**\r\n     * @define {boolean} Whether this is the client Node.js SDK.\r\n     */\r\n    NODE_CLIENT: false,\r\n    /**\r\n     * @define {boolean} Whether this is the Admin Node.js SDK.\r\n     */\r\n    NODE_ADMIN: false,\r\n    /**\r\n     * Firebase SDK Version\r\n     */\r\n    SDK_VERSION: '${JSCORE_VERSION}'\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Throws an error if the provided assertion is falsy\r\n * @param {*} assertion The assertion to be tested for falsiness\r\n * @param {!string} message The message to display if the check fails\r\n */\r\nvar assert = function (assertion, message) {\r\n    if (!assertion) {\r\n        throw assertionError(message);\r\n    }\r\n};\r\n/**\r\n * Returns an Error object suitable for throwing.\r\n * @param {string} message\r\n * @return {!Error}\r\n */\r\nvar assertionError = function (message) {\r\n    return new Error('Firebase Database (' +\r\n        CONSTANTS.SDK_VERSION +\r\n        ') INTERNAL ASSERT FAILED: ' +\r\n        message);\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar stringToByteArray = function (str) {\r\n    // TODO(user): Use native implementations if/when available\r\n    var out = [], p = 0;\r\n    for (var i = 0; i < str.length; i++) {\r\n        var c = str.charCodeAt(i);\r\n        if (c < 128) {\r\n            out[p++] = c;\r\n        }\r\n        else if (c < 2048) {\r\n            out[p++] = (c >> 6) | 192;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else if ((c & 0xfc00) == 0xd800 &&\r\n            i + 1 < str.length &&\r\n            (str.charCodeAt(i + 1) & 0xfc00) == 0xdc00) {\r\n            // Surrogate Pair\r\n            c = 0x10000 + ((c & 0x03ff) << 10) + (str.charCodeAt(++i) & 0x03ff);\r\n            out[p++] = (c >> 18) | 240;\r\n            out[p++] = ((c >> 12) & 63) | 128;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else {\r\n            out[p++] = (c >> 12) | 224;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n    }\r\n    return out;\r\n};\r\n/**\r\n * Turns an array of numbers into the string given by the concatenation of the\r\n * characters to which the numbers correspond.\r\n * @param {Array<number>} bytes Array of numbers representing characters.\r\n * @return {string} Stringification of the array.\r\n */\r\nvar byteArrayToString = function (bytes) {\r\n    // TODO(user): Use native implementations if/when available\r\n    var out = [], pos = 0, c = 0;\r\n    while (pos < bytes.length) {\r\n        var c1 = bytes[pos++];\r\n        if (c1 < 128) {\r\n            out[c++] = String.fromCharCode(c1);\r\n        }\r\n        else if (c1 > 191 && c1 < 224) {\r\n            var c2 = bytes[pos++];\r\n            out[c++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));\r\n        }\r\n        else if (c1 > 239 && c1 < 365) {\r\n            // Surrogate Pair\r\n            var c2 = bytes[pos++];\r\n            var c3 = bytes[pos++];\r\n            var c4 = bytes[pos++];\r\n            var u = (((c1 & 7) << 18) | ((c2 & 63) << 12) | ((c3 & 63) << 6) | (c4 & 63)) -\r\n                0x10000;\r\n            out[c++] = String.fromCharCode(0xd800 + (u >> 10));\r\n            out[c++] = String.fromCharCode(0xdc00 + (u & 1023));\r\n        }\r\n        else {\r\n            var c2 = bytes[pos++];\r\n            var c3 = bytes[pos++];\r\n            out[c++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));\r\n        }\r\n    }\r\n    return out.join('');\r\n};\r\n// Static lookup maps, lazily populated by init_()\r\nvar base64 = {\r\n    /**\r\n     * Maps bytes to characters.\r\n     * @type {Object}\r\n     * @private\r\n     */\r\n    byteToCharMap_: null,\r\n    /**\r\n     * Maps characters to bytes.\r\n     * @type {Object}\r\n     * @private\r\n     */\r\n    charToByteMap_: null,\r\n    /**\r\n     * Maps bytes to websafe characters.\r\n     * @type {Object}\r\n     * @private\r\n     */\r\n    byteToCharMapWebSafe_: null,\r\n    /**\r\n     * Maps websafe characters to bytes.\r\n     * @type {Object}\r\n     * @private\r\n     */\r\n    charToByteMapWebSafe_: null,\r\n    /**\r\n     * Our default alphabet, shared between\r\n     * ENCODED_VALS and ENCODED_VALS_WEBSAFE\r\n     * @type {string}\r\n     */\r\n    ENCODED_VALS_BASE: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789',\r\n    /**\r\n     * Our default alphabet. Value 64 (=) is special; it means \"nothing.\"\r\n     * @type {string}\r\n     */\r\n    get ENCODED_VALS() {\r\n        return this.ENCODED_VALS_BASE + '+/=';\r\n    },\r\n    /**\r\n     * Our websafe alphabet.\r\n     * @type {string}\r\n     */\r\n    get ENCODED_VALS_WEBSAFE() {\r\n        return this.ENCODED_VALS_BASE + '-_.';\r\n    },\r\n    /**\r\n     * Whether this browser supports the atob and btoa functions. This extension\r\n     * started at Mozilla but is now implemented by many browsers. We use the\r\n     * ASSUME_* variables to avoid pulling in the full useragent detection library\r\n     * but still allowing the standard per-browser compilations.\r\n     *\r\n     * @type {boolean}\r\n     */\r\n    HAS_NATIVE_SUPPORT: typeof atob === 'function',\r\n    /**\r\n     * Base64-encode an array of bytes.\r\n     *\r\n     * @param {Array<number>|Uint8Array} input An array of bytes (numbers with\r\n     *     value in [0, 255]) to encode.\r\n     * @param {boolean=} opt_webSafe Boolean indicating we should use the\r\n     *     alternative alphabet.\r\n     * @return {string} The base64 encoded string.\r\n     */\r\n    encodeByteArray: function (input, opt_webSafe) {\r\n        if (!Array.isArray(input)) {\r\n            throw Error('encodeByteArray takes an array as a parameter');\r\n        }\r\n        this.init_();\r\n        var byteToCharMap = opt_webSafe\r\n            ? this.byteToCharMapWebSafe_\r\n            : this.byteToCharMap_;\r\n        var output = [];\r\n        for (var i = 0; i < input.length; i += 3) {\r\n            var byte1 = input[i];\r\n            var haveByte2 = i + 1 < input.length;\r\n            var byte2 = haveByte2 ? input[i + 1] : 0;\r\n            var haveByte3 = i + 2 < input.length;\r\n            var byte3 = haveByte3 ? input[i + 2] : 0;\r\n            var outByte1 = byte1 >> 2;\r\n            var outByte2 = ((byte1 & 0x03) << 4) | (byte2 >> 4);\r\n            var outByte3 = ((byte2 & 0x0f) << 2) | (byte3 >> 6);\r\n            var outByte4 = byte3 & 0x3f;\r\n            if (!haveByte3) {\r\n                outByte4 = 64;\r\n                if (!haveByte2) {\r\n                    outByte3 = 64;\r\n                }\r\n            }\r\n            output.push(byteToCharMap[outByte1], byteToCharMap[outByte2], byteToCharMap[outByte3], byteToCharMap[outByte4]);\r\n        }\r\n        return output.join('');\r\n    },\r\n    /**\r\n     * Base64-encode a string.\r\n     *\r\n     * @param {string} input A string to encode.\r\n     * @param {boolean=} opt_webSafe If true, we should use the\r\n     *     alternative alphabet.\r\n     * @return {string} The base64 encoded string.\r\n     */\r\n    encodeString: function (input, opt_webSafe) {\r\n        // Shortcut for Mozilla browsers that implement\r\n        // a native base64 encoder in the form of \"btoa/atob\"\r\n        if (this.HAS_NATIVE_SUPPORT && !opt_webSafe) {\r\n            return btoa(input);\r\n        }\r\n        return this.encodeByteArray(stringToByteArray(input), opt_webSafe);\r\n    },\r\n    /**\r\n     * Base64-decode a string.\r\n     *\r\n     * @param {string} input to decode.\r\n     * @param {boolean=} opt_webSafe True if we should use the\r\n     *     alternative alphabet.\r\n     * @return {string} string representing the decoded value.\r\n     */\r\n    decodeString: function (input, opt_webSafe) {\r\n        // Shortcut for Mozilla browsers that implement\r\n        // a native base64 encoder in the form of \"btoa/atob\"\r\n        if (this.HAS_NATIVE_SUPPORT && !opt_webSafe) {\r\n            return atob(input);\r\n        }\r\n        return byteArrayToString(this.decodeStringToByteArray(input, opt_webSafe));\r\n    },\r\n    /**\r\n     * Base64-decode a string.\r\n     *\r\n     * In base-64 decoding, groups of four characters are converted into three\r\n     * bytes.  If the encoder did not apply padding, the input length may not\r\n     * be a multiple of 4.\r\n     *\r\n     * In this case, the last group will have fewer than 4 characters, and\r\n     * padding will be inferred.  If the group has one or two characters, it decodes\r\n     * to one byte.  If the group has three characters, it decodes to two bytes.\r\n     *\r\n     * @param {string} input Input to decode.\r\n     * @param {boolean=} opt_webSafe True if we should use the web-safe alphabet.\r\n     * @return {!Array<number>} bytes representing the decoded value.\r\n     */\r\n    decodeStringToByteArray: function (input, opt_webSafe) {\r\n        this.init_();\r\n        var charToByteMap = opt_webSafe\r\n            ? this.charToByteMapWebSafe_\r\n            : this.charToByteMap_;\r\n        var output = [];\r\n        for (var i = 0; i < input.length;) {\r\n            var byte1 = charToByteMap[input.charAt(i++)];\r\n            var haveByte2 = i < input.length;\r\n            var byte2 = haveByte2 ? charToByteMap[input.charAt(i)] : 0;\r\n            ++i;\r\n            var haveByte3 = i < input.length;\r\n            var byte3 = haveByte3 ? charToByteMap[input.charAt(i)] : 64;\r\n            ++i;\r\n            var haveByte4 = i < input.length;\r\n            var byte4 = haveByte4 ? charToByteMap[input.charAt(i)] : 64;\r\n            ++i;\r\n            if (byte1 == null || byte2 == null || byte3 == null || byte4 == null) {\r\n                throw Error();\r\n            }\r\n            var outByte1 = (byte1 << 2) | (byte2 >> 4);\r\n            output.push(outByte1);\r\n            if (byte3 != 64) {\r\n                var outByte2 = ((byte2 << 4) & 0xf0) | (byte3 >> 2);\r\n                output.push(outByte2);\r\n                if (byte4 != 64) {\r\n                    var outByte3 = ((byte3 << 6) & 0xc0) | byte4;\r\n                    output.push(outByte3);\r\n                }\r\n            }\r\n        }\r\n        return output;\r\n    },\r\n    /**\r\n     * Lazy static initialization function. Called before\r\n     * accessing any of the static map variables.\r\n     * @private\r\n     */\r\n    init_: function () {\r\n        if (!this.byteToCharMap_) {\r\n            this.byteToCharMap_ = {};\r\n            this.charToByteMap_ = {};\r\n            this.byteToCharMapWebSafe_ = {};\r\n            this.charToByteMapWebSafe_ = {};\r\n            // We want quick mappings back and forth, so we precompute two maps.\r\n            for (var i = 0; i < this.ENCODED_VALS.length; i++) {\r\n                this.byteToCharMap_[i] = this.ENCODED_VALS.charAt(i);\r\n                this.charToByteMap_[this.byteToCharMap_[i]] = i;\r\n                this.byteToCharMapWebSafe_[i] = this.ENCODED_VALS_WEBSAFE.charAt(i);\r\n                this.charToByteMapWebSafe_[this.byteToCharMapWebSafe_[i]] = i;\r\n                // Be forgiving when decoding and correctly decode both encodings.\r\n                if (i >= this.ENCODED_VALS_BASE.length) {\r\n                    this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(i)] = i;\r\n                    this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(i)] = i;\r\n                }\r\n            }\r\n        }\r\n    }\r\n};\r\n/**\r\n * URL-safe base64 encoding\r\n * @param {!string} str\r\n * @return {!string}\r\n */\r\nvar base64Encode = function (str) {\r\n    var utf8Bytes = stringToByteArray(str);\r\n    return base64.encodeByteArray(utf8Bytes, true);\r\n};\r\n/**\r\n * URL-safe base64 decoding\r\n *\r\n * NOTE: DO NOT use the global atob() function - it does NOT support the\r\n * base64Url variant encoding.\r\n *\r\n * @param {string} str To be decoded\r\n * @return {?string} Decoded result, if possible\r\n */\r\nvar base64Decode = function (str) {\r\n    try {\r\n        return base64.decodeString(str, true);\r\n    }\r\n    catch (e) {\r\n        console.error('base64Decode failed: ', e);\r\n    }\r\n    return null;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Do a deep-copy of basic JavaScript Objects or Arrays.\r\n */\r\nfunction deepCopy(value) {\r\n    return deepExtend(undefined, value);\r\n}\r\n/**\r\n * Copy properties from source to target (recursively allows extension\r\n * of Objects and Arrays).  Scalar values in the target are over-written.\r\n * If target is undefined, an object of the appropriate type will be created\r\n * (and returned).\r\n *\r\n * We recursively copy all child properties of plain Objects in the source- so\r\n * that namespace- like dictionaries are merged.\r\n *\r\n * Note that the target can be a function, in which case the properties in\r\n * the source Object are copied onto it as static properties of the Function.\r\n */\r\nfunction deepExtend(target, source) {\r\n    if (!(source instanceof Object)) {\r\n        return source;\r\n    }\r\n    switch (source.constructor) {\r\n        case Date:\r\n            // Treat Dates like scalars; if the target date object had any child\r\n            // properties - they will be lost!\r\n            var dateValue = source;\r\n            return new Date(dateValue.getTime());\r\n        case Object:\r\n            if (target === undefined) {\r\n                target = {};\r\n            }\r\n            break;\r\n        case Array:\r\n            // Always copy the array source and overwrite the target.\r\n            target = [];\r\n            break;\r\n        default:\r\n            // Not a plain Object - treat it as a scalar.\r\n            return source;\r\n    }\r\n    for (var prop in source) {\r\n        if (!source.hasOwnProperty(prop)) {\r\n            continue;\r\n        }\r\n        target[prop] = deepExtend(target[prop], source[prop]);\r\n    }\r\n    return target;\r\n}\r\n// TODO: Really needed (for JSCompiler type checking)?\r\nfunction patchProperty(obj, prop, value) {\r\n    obj[prop] = value;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar Deferred = /** @class */ (function () {\r\n    function Deferred() {\r\n        var _this = this;\r\n        this.promise = new Promise(function (resolve, reject) {\r\n            _this.resolve = resolve;\r\n            _this.reject = reject;\r\n        });\r\n    }\r\n    /**\r\n     * Our API internals are not promiseified and cannot because our callback APIs have subtle expectations around\r\n     * invoking promises inline, which Promises are forbidden to do. This method accepts an optional node-style callback\r\n     * and returns a node-style callback which will resolve or reject the Deferred's promise.\r\n     * @param {((?function(?(Error)): (?|undefined))| (?function(?(Error),?=): (?|undefined)))=} callback\r\n     * @return {!function(?(Error), ?=)}\r\n     */\r\n    Deferred.prototype.wrapCallback = function (callback) {\r\n        var _this = this;\r\n        return function (error, value) {\r\n            if (error) {\r\n                _this.reject(error);\r\n            }\r\n            else {\r\n                _this.resolve(value);\r\n            }\r\n            if (typeof callback === 'function') {\r\n                // Attaching noop handler just in case developer wasn't expecting\r\n                // promises\r\n                _this.promise.catch(function () { });\r\n                // Some of our callbacks don't expect a value and our own tests\r\n                // assert that the parameter length is 1\r\n                if (callback.length === 1) {\r\n                    callback(error);\r\n                }\r\n                else {\r\n                    callback(error, value);\r\n                }\r\n            }\r\n        };\r\n    };\r\n    return Deferred;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns navigator.userAgent string or '' if it's not defined.\r\n * @return {string} user agent string\r\n */\r\nvar getUA = function () {\r\n    if (typeof navigator !== 'undefined' &&\r\n        typeof navigator['userAgent'] === 'string') {\r\n        return navigator['userAgent'];\r\n    }\r\n    else {\r\n        return '';\r\n    }\r\n};\r\n/**\r\n * Detect Cordova / PhoneGap / Ionic frameworks on a mobile device.\r\n *\r\n * Deliberately does not rely on checking `file://` URLs (as this fails PhoneGap in the Ripple emulator) nor\r\n * Cordova `onDeviceReady`, which would normally wait for a callback.\r\n *\r\n * @return {boolean} isMobileCordova\r\n */\r\nvar isMobileCordova = function () {\r\n    return (typeof window !== 'undefined' &&\r\n        !!(window['cordova'] || window['phonegap'] || window['PhoneGap']) &&\r\n        /ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test(getUA()));\r\n};\r\n/**\r\n * Detect React Native.\r\n *\r\n * @return {boolean} True if ReactNative environment is detected.\r\n */\r\nvar isReactNative = function () {\r\n    return (typeof navigator === 'object' && navigator['product'] === 'ReactNative');\r\n};\r\n/**\r\n * Detect Node.js.\r\n *\r\n * @return {boolean} True if Node.js environment is detected.\r\n */\r\nvar isNodeSdk = function () {\r\n    return CONSTANTS.NODE_CLIENT === true || CONSTANTS.NODE_ADMIN === true;\r\n};\n\nvar ERROR_NAME = 'FirebaseError';\r\nvar captureStackTrace = Error\r\n    .captureStackTrace;\r\n// Export for faking in tests\r\nfunction patchCapture(captureFake) {\r\n    var result = captureStackTrace;\r\n    captureStackTrace = captureFake;\r\n    return result;\r\n}\r\nvar FirebaseError = /** @class */ (function () {\r\n    function FirebaseError(code, message) {\r\n        this.code = code;\r\n        this.message = message;\r\n        // We want the stack value, if implemented by Error\r\n        if (captureStackTrace) {\r\n            // Patches this.stack, omitted calls above ErrorFactory#create\r\n            captureStackTrace(this, ErrorFactory.prototype.create);\r\n        }\r\n        else {\r\n            try {\r\n                // In case of IE11, stack will be set only after error is raised.\r\n                // https://docs.microsoft.com/en-us/scripting/javascript/reference/stack-property-error-javascript\r\n                throw Error.apply(this, arguments);\r\n            }\r\n            catch (err) {\r\n                this.name = ERROR_NAME;\r\n                // Make non-enumerable getter for the property.\r\n                Object.defineProperty(this, 'stack', {\r\n                    get: function () {\r\n                        return err.stack;\r\n                    }\r\n                });\r\n            }\r\n        }\r\n    }\r\n    return FirebaseError;\r\n}());\r\n// Back-door inheritance\r\nFirebaseError.prototype = Object.create(Error.prototype);\r\nFirebaseError.prototype.constructor = FirebaseError;\r\nFirebaseError.prototype.name = ERROR_NAME;\r\nvar ErrorFactory = /** @class */ (function () {\r\n    function ErrorFactory(service, serviceName, errors) {\r\n        this.service = service;\r\n        this.serviceName = serviceName;\r\n        this.errors = errors;\r\n        // Matches {$name}, by default.\r\n        this.pattern = /\\{\\$([^}]+)}/g;\r\n        // empty\r\n    }\r\n    ErrorFactory.prototype.create = function (code, data) {\r\n        if (data === undefined) {\r\n            data = {};\r\n        }\r\n        var template = this.errors[code];\r\n        var fullCode = this.service + '/' + code;\r\n        var message;\r\n        if (template === undefined) {\r\n            message = 'Error';\r\n        }\r\n        else {\r\n            message = template.replace(this.pattern, function (match, key) {\r\n                var value = data[key];\r\n                return value !== undefined ? value.toString() : '<' + key + '?>';\r\n            });\r\n        }\r\n        // Service: Error message (service/code).\r\n        message = this.serviceName + ': ' + message + ' (' + fullCode + ').';\r\n        var err = new FirebaseError(fullCode, message);\r\n        // Populate the Error object with message parts for programmatic\r\n        // accesses (e.g., e.file).\r\n        for (var prop in data) {\r\n            if (!data.hasOwnProperty(prop) || prop.slice(-1) === '_') {\r\n                continue;\r\n            }\r\n            err[prop] = data[prop];\r\n        }\r\n        return err;\r\n    };\r\n    return ErrorFactory;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Evaluates a JSON string into a javascript object.\r\n *\r\n * @param {string} str A string containing JSON.\r\n * @return {*} The javascript object representing the specified JSON.\r\n */\r\nfunction jsonEval(str) {\r\n    return JSON.parse(str);\r\n}\r\n/**\r\n * Returns JSON representing a javascript object.\r\n * @param {*} data Javascript object to be stringified.\r\n * @return {string} The JSON contents of the object.\r\n */\r\nfunction stringify(data) {\r\n    return JSON.stringify(data);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Decodes a Firebase auth. token into constituent parts.\r\n *\r\n * Notes:\r\n * - May return with invalid / incomplete claims if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {{header: *, claims: *, data: *, signature: string}}\r\n */\r\nvar decode = function (token) {\r\n    var header = {}, claims = {}, data = {}, signature = '';\r\n    try {\r\n        var parts = token.split('.');\r\n        header = jsonEval(base64Decode(parts[0]) || '');\r\n        claims = jsonEval(base64Decode(parts[1]) || '');\r\n        signature = parts[2];\r\n        data = claims['d'] || {};\r\n        delete claims['d'];\r\n    }\r\n    catch (e) { }\r\n    return {\r\n        header: header,\r\n        claims: claims,\r\n        data: data,\r\n        signature: signature\r\n    };\r\n};\r\n/**\r\n * Decodes a Firebase auth. token and checks the validity of its time-based claims. Will return true if the\r\n * token is within the time window authorized by the 'nbf' (not-before) and 'iat' (issued-at) claims.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {boolean}\r\n */\r\nvar isValidTimestamp = function (token) {\r\n    var claims = decode(token).claims, now = Math.floor(new Date().getTime() / 1000), validSince, validUntil;\r\n    if (typeof claims === 'object') {\r\n        if (claims.hasOwnProperty('nbf')) {\r\n            validSince = claims['nbf'];\r\n        }\r\n        else if (claims.hasOwnProperty('iat')) {\r\n            validSince = claims['iat'];\r\n        }\r\n        if (claims.hasOwnProperty('exp')) {\r\n            validUntil = claims['exp'];\r\n        }\r\n        else {\r\n            // token will expire after 24h by default\r\n            validUntil = validSince + 86400;\r\n        }\r\n    }\r\n    return (now && validSince && validUntil && now >= validSince && now <= validUntil);\r\n};\r\n/**\r\n * Decodes a Firebase auth. token and returns its issued at time if valid, null otherwise.\r\n *\r\n * Notes:\r\n * - May return null if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {?number}\r\n */\r\nvar issuedAtTime = function (token) {\r\n    var claims = decode(token).claims;\r\n    if (typeof claims === 'object' && claims.hasOwnProperty('iat')) {\r\n        return claims['iat'];\r\n    }\r\n    return null;\r\n};\r\n/**\r\n * Decodes a Firebase auth. token and checks the validity of its format. Expects a valid issued-at time.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {boolean}\r\n */\r\nvar isValidFormat = function (token) {\r\n    var decoded = decode(token), claims = decoded.claims;\r\n    return !!claims && typeof claims === 'object' && claims.hasOwnProperty('iat');\r\n};\r\n/**\r\n * Attempts to peer into an auth token and determine if it's an admin auth token by looking at the claims portion.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n *\r\n * @param {?string} token\r\n * @return {boolean}\r\n */\r\nvar isAdmin = function (token) {\r\n    var claims = decode(token).claims;\r\n    return typeof claims === 'object' && claims['admin'] === true;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// See http://www.devthought.com/2012/01/18/an-object-is-not-a-hash/\r\nvar contains = function (obj, key) {\r\n    return Object.prototype.hasOwnProperty.call(obj, key);\r\n};\r\nvar safeGet = function (obj, key) {\r\n    if (Object.prototype.hasOwnProperty.call(obj, key))\r\n        return obj[key];\r\n    // else return undefined.\r\n};\r\n/**\r\n * Enumerates the keys/values in an object, excluding keys defined on the prototype.\r\n *\r\n * @param {?Object.<K,V>} obj Object to enumerate.\r\n * @param {!function(K, V)} fn Function to call for each key and value.\r\n * @template K,V\r\n */\r\nvar forEach = function (obj, fn) {\r\n    for (var key in obj) {\r\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\r\n            fn(key, obj[key]);\r\n        }\r\n    }\r\n};\r\n/**\r\n * Copies all the (own) properties from one object to another.\r\n * @param {!Object} objTo\r\n * @param {!Object} objFrom\r\n * @return {!Object} objTo\r\n */\r\nvar extend = function (objTo, objFrom) {\r\n    forEach(objFrom, function (key, value) {\r\n        objTo[key] = value;\r\n    });\r\n    return objTo;\r\n};\r\n/**\r\n * Returns a clone of the specified object.\r\n * @param {!Object} obj\r\n * @return {!Object} cloned obj.\r\n */\r\nvar clone = function (obj) {\r\n    return extend({}, obj);\r\n};\r\n/**\r\n * Returns true if obj has typeof \"object\" and is not null.  Unlike goog.isObject(), does not return true\r\n * for functions.\r\n *\r\n * @param obj {*} A potential object.\r\n * @returns {boolean} True if it's an object.\r\n */\r\nvar isNonNullObject = function (obj) {\r\n    return typeof obj === 'object' && obj !== null;\r\n};\r\nvar isEmpty = function (obj) {\r\n    for (var key in obj) {\r\n        return false;\r\n    }\r\n    return true;\r\n};\r\nvar getCount = function (obj) {\r\n    var rv = 0;\r\n    for (var key in obj) {\r\n        rv++;\r\n    }\r\n    return rv;\r\n};\r\nvar map = function (obj, f, opt_obj) {\r\n    var res = {};\r\n    for (var key in obj) {\r\n        res[key] = f.call(opt_obj, obj[key], key, obj);\r\n    }\r\n    return res;\r\n};\r\nvar findKey = function (obj, fn, opt_this) {\r\n    for (var key in obj) {\r\n        if (fn.call(opt_this, obj[key], key, obj)) {\r\n            return key;\r\n        }\r\n    }\r\n    return undefined;\r\n};\r\nvar findValue = function (obj, fn, opt_this) {\r\n    var key = findKey(obj, fn, opt_this);\r\n    return key && obj[key];\r\n};\r\nvar getAnyKey = function (obj) {\r\n    for (var key in obj) {\r\n        return key;\r\n    }\r\n};\r\nvar getValues = function (obj) {\r\n    var res = [];\r\n    var i = 0;\r\n    for (var key in obj) {\r\n        res[i++] = obj[key];\r\n    }\r\n    return res;\r\n};\r\n/**\r\n * Tests whether every key/value pair in an object pass the test implemented\r\n * by the provided function\r\n *\r\n * @param {?Object.<K,V>} obj Object to test.\r\n * @param {!function(K, V)} fn Function to call for each key and value.\r\n * @template K,V\r\n */\r\nvar every = function (obj, fn) {\r\n    for (var key in obj) {\r\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\r\n            if (!fn(key, obj[key])) {\r\n                return false;\r\n            }\r\n        }\r\n    }\r\n    return true;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns a querystring-formatted string (e.g. &arg=val&arg2=val2) from a params\r\n * object (e.g. {arg: 'val', arg2: 'val2'})\r\n * Note: You must prepend it with ? when adding it to a URL.\r\n *\r\n * @param {!Object} querystringParams\r\n * @return {string}\r\n */\r\nvar querystring = function (querystringParams) {\r\n    var params = [];\r\n    forEach(querystringParams, function (key, value) {\r\n        if (Array.isArray(value)) {\r\n            value.forEach(function (arrayVal) {\r\n                params.push(encodeURIComponent(key) + '=' + encodeURIComponent(arrayVal));\r\n            });\r\n        }\r\n        else {\r\n            params.push(encodeURIComponent(key) + '=' + encodeURIComponent(value));\r\n        }\r\n    });\r\n    return params.length ? '&' + params.join('&') : '';\r\n};\r\n/**\r\n * Decodes a querystring (e.g. ?arg=val&arg2=val2) into a params object (e.g. {arg: 'val', arg2: 'val2'})\r\n *\r\n * @param {string} querystring\r\n * @return {!Object}\r\n */\r\nvar querystringDecode = function (querystring) {\r\n    var obj = {};\r\n    var tokens = querystring.replace(/^\\?/, '').split('&');\r\n    tokens.forEach(function (token) {\r\n        if (token) {\r\n            var key = token.split('=');\r\n            obj[key[0]] = key[1];\r\n        }\r\n    });\r\n    return obj;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Copyright 2011 The Closure Library Authors. All Rights Reserved.\r\n//\r\n// Licensed under the Apache License, Version 2.0 (the \"License\");\r\n// you may not use this file except in compliance with the License.\r\n// You may obtain a copy of the License at\r\n//\r\n//      http://www.apache.org/licenses/LICENSE-2.0\r\n//\r\n// Unless required by applicable law or agreed to in writing, software\r\n// distributed under the License is distributed on an \"AS-IS\" BASIS,\r\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n// See the License for the specific language governing permissions and\r\n// limitations under the License.\r\n/**\r\n * @fileoverview Abstract cryptographic hash interface.\r\n *\r\n * See Sha1 and Md5 for sample implementations.\r\n *\r\n */\r\n/**\r\n * Create a cryptographic hash instance.\r\n *\r\n * @constructor\r\n * @struct\r\n */\r\nvar Hash = /** @class */ (function () {\r\n    function Hash() {\r\n        /**\r\n         * The block size for the hasher.\r\n         * @type {number}\r\n         */\r\n        this.blockSize = -1;\r\n    }\r\n    return Hash;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview SHA-1 cryptographic hash.\r\n * Variable names follow the notation in FIPS PUB 180-3:\r\n * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.\r\n *\r\n * Usage:\r\n *   var sha1 = new sha1();\r\n *   sha1.update(bytes);\r\n *   var hash = sha1.digest();\r\n *\r\n * Performance:\r\n *   Chrome 23:   ~400 Mbit/s\r\n *   Firefox 16:  ~250 Mbit/s\r\n *\r\n */\r\n/**\r\n * SHA-1 cryptographic hash constructor.\r\n *\r\n * The properties declared here are discussed in the above algorithm document.\r\n * @constructor\r\n * @extends {Hash}\r\n * @final\r\n * @struct\r\n */\r\nvar Sha1 = /** @class */ (function (_super) {\r\n    tslib_1.__extends(Sha1, _super);\r\n    function Sha1() {\r\n        var _this = _super.call(this) || this;\r\n        /**\r\n         * Holds the previous values of accumulated variables a-e in the compress_\r\n         * function.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\r\n        _this.chain_ = [];\r\n        /**\r\n         * A buffer holding the partially computed hash result.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\r\n        _this.buf_ = [];\r\n        /**\r\n         * An array of 80 bytes, each a part of the message to be hashed.  Referred to\r\n         * as the message schedule in the docs.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\r\n        _this.W_ = [];\r\n        /**\r\n         * Contains data needed to pad messages less than 64 bytes.\r\n         * @type {!Array<number>}\r\n         * @private\r\n         */\r\n        _this.pad_ = [];\r\n        /**\r\n         * @private {number}\r\n         */\r\n        _this.inbuf_ = 0;\r\n        /**\r\n         * @private {number}\r\n         */\r\n        _this.total_ = 0;\r\n        _this.blockSize = 512 / 8;\r\n        _this.pad_[0] = 128;\r\n        for (var i = 1; i < _this.blockSize; ++i) {\r\n            _this.pad_[i] = 0;\r\n        }\r\n        _this.reset();\r\n        return _this;\r\n    }\r\n    Sha1.prototype.reset = function () {\r\n        this.chain_[0] = 0x67452301;\r\n        this.chain_[1] = 0xefcdab89;\r\n        this.chain_[2] = 0x98badcfe;\r\n        this.chain_[3] = 0x10325476;\r\n        this.chain_[4] = 0xc3d2e1f0;\r\n        this.inbuf_ = 0;\r\n        this.total_ = 0;\r\n    };\r\n    /**\r\n     * Internal compress helper function.\r\n     * @param {!Array<number>|!Uint8Array|string} buf Block to compress.\r\n     * @param {number=} opt_offset Offset of the block in the buffer.\r\n     * @private\r\n     */\r\n    Sha1.prototype.compress_ = function (buf, opt_offset) {\r\n        if (!opt_offset) {\r\n            opt_offset = 0;\r\n        }\r\n        var W = this.W_;\r\n        // get 16 big endian words\r\n        if (typeof buf === 'string') {\r\n            for (var i = 0; i < 16; i++) {\r\n                // TODO(user): [bug 8140122] Recent versions of Safari for Mac OS and iOS\r\n                // have a bug that turns the post-increment ++ operator into pre-increment\r\n                // during JIT compilation.  We have code that depends heavily on SHA-1 for\r\n                // correctness and which is affected by this bug, so I've removed all uses\r\n                // of post-increment ++ in which the result value is used.  We can revert\r\n                // this change once the Safari bug\r\n                // (https://bugs.webkit.org/show_bug.cgi?id=109036) has been fixed and\r\n                // most clients have been updated.\r\n                W[i] =\r\n                    (buf.charCodeAt(opt_offset) << 24) |\r\n                        (buf.charCodeAt(opt_offset + 1) << 16) |\r\n                        (buf.charCodeAt(opt_offset + 2) << 8) |\r\n                        buf.charCodeAt(opt_offset + 3);\r\n                opt_offset += 4;\r\n            }\r\n        }\r\n        else {\r\n            for (var i = 0; i < 16; i++) {\r\n                W[i] =\r\n                    (buf[opt_offset] << 24) |\r\n                        (buf[opt_offset + 1] << 16) |\r\n                        (buf[opt_offset + 2] << 8) |\r\n                        buf[opt_offset + 3];\r\n                opt_offset += 4;\r\n            }\r\n        }\r\n        // expand to 80 words\r\n        for (var i = 16; i < 80; i++) {\r\n            var t = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];\r\n            W[i] = ((t << 1) | (t >>> 31)) & 0xffffffff;\r\n        }\r\n        var a = this.chain_[0];\r\n        var b = this.chain_[1];\r\n        var c = this.chain_[2];\r\n        var d = this.chain_[3];\r\n        var e = this.chain_[4];\r\n        var f, k;\r\n        // TODO(user): Try to unroll this loop to speed up the computation.\r\n        for (var i = 0; i < 80; i++) {\r\n            if (i < 40) {\r\n                if (i < 20) {\r\n                    f = d ^ (b & (c ^ d));\r\n                    k = 0x5a827999;\r\n                }\r\n                else {\r\n                    f = b ^ c ^ d;\r\n                    k = 0x6ed9eba1;\r\n                }\r\n            }\r\n            else {\r\n                if (i < 60) {\r\n                    f = (b & c) | (d & (b | c));\r\n                    k = 0x8f1bbcdc;\r\n                }\r\n                else {\r\n                    f = b ^ c ^ d;\r\n                    k = 0xca62c1d6;\r\n                }\r\n            }\r\n            var t = (((a << 5) | (a >>> 27)) + f + e + k + W[i]) & 0xffffffff;\r\n            e = d;\r\n            d = c;\r\n            c = ((b << 30) | (b >>> 2)) & 0xffffffff;\r\n            b = a;\r\n            a = t;\r\n        }\r\n        this.chain_[0] = (this.chain_[0] + a) & 0xffffffff;\r\n        this.chain_[1] = (this.chain_[1] + b) & 0xffffffff;\r\n        this.chain_[2] = (this.chain_[2] + c) & 0xffffffff;\r\n        this.chain_[3] = (this.chain_[3] + d) & 0xffffffff;\r\n        this.chain_[4] = (this.chain_[4] + e) & 0xffffffff;\r\n    };\r\n    Sha1.prototype.update = function (bytes, opt_length) {\r\n        // TODO(johnlenz): tighten the function signature and remove this check\r\n        if (bytes == null) {\r\n            return;\r\n        }\r\n        if (opt_length === undefined) {\r\n            opt_length = bytes.length;\r\n        }\r\n        var lengthMinusBlock = opt_length - this.blockSize;\r\n        var n = 0;\r\n        // Using local instead of member variables gives ~5% speedup on Firefox 16.\r\n        var buf = this.buf_;\r\n        var inbuf = this.inbuf_;\r\n        // The outer while loop should execute at most twice.\r\n        while (n < opt_length) {\r\n            // When we have no data in the block to top up, we can directly process the\r\n            // input buffer (assuming it contains sufficient data). This gives ~25%\r\n            // speedup on Chrome 23 and ~15% speedup on Firefox 16, but requires that\r\n            // the data is provided in large chunks (or in multiples of 64 bytes).\r\n            if (inbuf == 0) {\r\n                while (n <= lengthMinusBlock) {\r\n                    this.compress_(bytes, n);\r\n                    n += this.blockSize;\r\n                }\r\n            }\r\n            if (typeof bytes === 'string') {\r\n                while (n < opt_length) {\r\n                    buf[inbuf] = bytes.charCodeAt(n);\r\n                    ++inbuf;\r\n                    ++n;\r\n                    if (inbuf == this.blockSize) {\r\n                        this.compress_(buf);\r\n                        inbuf = 0;\r\n                        // Jump to the outer loop so we use the full-block optimization.\r\n                        break;\r\n                    }\r\n                }\r\n            }\r\n            else {\r\n                while (n < opt_length) {\r\n                    buf[inbuf] = bytes[n];\r\n                    ++inbuf;\r\n                    ++n;\r\n                    if (inbuf == this.blockSize) {\r\n                        this.compress_(buf);\r\n                        inbuf = 0;\r\n                        // Jump to the outer loop so we use the full-block optimization.\r\n                        break;\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        this.inbuf_ = inbuf;\r\n        this.total_ += opt_length;\r\n    };\r\n    /** @override */\r\n    Sha1.prototype.digest = function () {\r\n        var digest = [];\r\n        var totalBits = this.total_ * 8;\r\n        // Add pad 0x80 0x00*.\r\n        if (this.inbuf_ < 56) {\r\n            this.update(this.pad_, 56 - this.inbuf_);\r\n        }\r\n        else {\r\n            this.update(this.pad_, this.blockSize - (this.inbuf_ - 56));\r\n        }\r\n        // Add # bits.\r\n        for (var i = this.blockSize - 1; i >= 56; i--) {\r\n            this.buf_[i] = totalBits & 255;\r\n            totalBits /= 256; // Don't use bit-shifting here!\r\n        }\r\n        this.compress_(this.buf_);\r\n        var n = 0;\r\n        for (var i = 0; i < 5; i++) {\r\n            for (var j = 24; j >= 0; j -= 8) {\r\n                digest[n] = (this.chain_[i] >> j) & 255;\r\n                ++n;\r\n            }\r\n        }\r\n        return digest;\r\n    };\r\n    return Sha1;\r\n}(Hash));\n\n/**\r\n * Helper to make a Subscribe function (just like Promise helps make a\r\n * Thenable).\r\n *\r\n * @param executor Function which can make calls to a single Observer\r\n *     as a proxy.\r\n * @param onNoObservers Callback when count of Observers goes to zero.\r\n */\r\nfunction createSubscribe(executor, onNoObservers) {\r\n    var proxy = new ObserverProxy(executor, onNoObservers);\r\n    return proxy.subscribe.bind(proxy);\r\n}\r\n/**\r\n * Implement fan-out for any number of Observers attached via a subscribe\r\n * function.\r\n */\r\nvar ObserverProxy = /** @class */ (function () {\r\n    /**\r\n     * @param executor Function which can make calls to a single Observer\r\n     *     as a proxy.\r\n     * @param onNoObservers Callback when count of Observers goes to zero.\r\n     */\r\n    function ObserverProxy(executor, onNoObservers) {\r\n        var _this = this;\r\n        this.observers = [];\r\n        this.unsubscribes = [];\r\n        this.observerCount = 0;\r\n        // Micro-task scheduling by calling task.then().\r\n        this.task = Promise.resolve();\r\n        this.finalized = false;\r\n        this.onNoObservers = onNoObservers;\r\n        // Call the executor asynchronously so subscribers that are called\r\n        // synchronously after the creation of the subscribe function\r\n        // can still receive the very first value generated in the executor.\r\n        this.task\r\n            .then(function () {\r\n            executor(_this);\r\n        })\r\n            .catch(function (e) {\r\n            _this.error(e);\r\n        });\r\n    }\r\n    ObserverProxy.prototype.next = function (value) {\r\n        this.forEachObserver(function (observer) {\r\n            observer.next(value);\r\n        });\r\n    };\r\n    ObserverProxy.prototype.error = function (error) {\r\n        this.forEachObserver(function (observer) {\r\n            observer.error(error);\r\n        });\r\n        this.close(error);\r\n    };\r\n    ObserverProxy.prototype.complete = function () {\r\n        this.forEachObserver(function (observer) {\r\n            observer.complete();\r\n        });\r\n        this.close();\r\n    };\r\n    /**\r\n     * Subscribe function that can be used to add an Observer to the fan-out list.\r\n     *\r\n     * - We require that no event is sent to a subscriber sychronously to their\r\n     *   call to subscribe().\r\n     */\r\n    ObserverProxy.prototype.subscribe = function (nextOrObserver, error, complete) {\r\n        var _this = this;\r\n        var observer;\r\n        if (nextOrObserver === undefined &&\r\n            error === undefined &&\r\n            complete === undefined) {\r\n            throw new Error('Missing Observer.');\r\n        }\r\n        // Assemble an Observer object when passed as callback functions.\r\n        if (implementsAnyMethods(nextOrObserver, ['next', 'error', 'complete'])) {\r\n            observer = nextOrObserver;\r\n        }\r\n        else {\r\n            observer = {\r\n                next: nextOrObserver,\r\n                error: error,\r\n                complete: complete\r\n            };\r\n        }\r\n        if (observer.next === undefined) {\r\n            observer.next = noop;\r\n        }\r\n        if (observer.error === undefined) {\r\n            observer.error = noop;\r\n        }\r\n        if (observer.complete === undefined) {\r\n            observer.complete = noop;\r\n        }\r\n        var unsub = this.unsubscribeOne.bind(this, this.observers.length);\r\n        // Attempt to subscribe to a terminated Observable - we\r\n        // just respond to the Observer with the final error or complete\r\n        // event.\r\n        if (this.finalized) {\r\n            this.task.then(function () {\r\n                try {\r\n                    if (_this.finalError) {\r\n                        observer.error(_this.finalError);\r\n                    }\r\n                    else {\r\n                        observer.complete();\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    // nothing\r\n                }\r\n                return;\r\n            });\r\n        }\r\n        this.observers.push(observer);\r\n        return unsub;\r\n    };\r\n    // Unsubscribe is synchronous - we guarantee that no events are sent to\r\n    // any unsubscribed Observer.\r\n    ObserverProxy.prototype.unsubscribeOne = function (i) {\r\n        if (this.observers === undefined || this.observers[i] === undefined) {\r\n            return;\r\n        }\r\n        delete this.observers[i];\r\n        this.observerCount -= 1;\r\n        if (this.observerCount === 0 && this.onNoObservers !== undefined) {\r\n            this.onNoObservers(this);\r\n        }\r\n    };\r\n    ObserverProxy.prototype.forEachObserver = function (fn) {\r\n        if (this.finalized) {\r\n            // Already closed by previous event....just eat the additional values.\r\n            return;\r\n        }\r\n        // Since sendOne calls asynchronously - there is no chance that\r\n        // this.observers will become undefined.\r\n        for (var i = 0; i < this.observers.length; i++) {\r\n            this.sendOne(i, fn);\r\n        }\r\n    };\r\n    // Call the Observer via one of it's callback function. We are careful to\r\n    // confirm that the observe has not been unsubscribed since this asynchronous\r\n    // function had been queued.\r\n    ObserverProxy.prototype.sendOne = function (i, fn) {\r\n        var _this = this;\r\n        // Execute the callback asynchronously\r\n        this.task.then(function () {\r\n            if (_this.observers !== undefined && _this.observers[i] !== undefined) {\r\n                try {\r\n                    fn(_this.observers[i]);\r\n                }\r\n                catch (e) {\r\n                    // Ignore exceptions raised in Observers or missing methods of an\r\n                    // Observer.\r\n                    // Log error to console. b/31404806\r\n                    if (typeof console !== 'undefined' && console.error) {\r\n                        console.error(e);\r\n                    }\r\n                }\r\n            }\r\n        });\r\n    };\r\n    ObserverProxy.prototype.close = function (err) {\r\n        var _this = this;\r\n        if (this.finalized) {\r\n            return;\r\n        }\r\n        this.finalized = true;\r\n        if (err !== undefined) {\r\n            this.finalError = err;\r\n        }\r\n        // Proxy is no longer needed - garbage collect references\r\n        this.task.then(function () {\r\n            _this.observers = undefined;\r\n            _this.onNoObservers = undefined;\r\n        });\r\n    };\r\n    return ObserverProxy;\r\n}());\r\n/** Turn synchronous function into one called asynchronously. */\r\nfunction async(fn, onError) {\r\n    return function () {\r\n        var args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            args[_i] = arguments[_i];\r\n        }\r\n        Promise.resolve(true)\r\n            .then(function () {\r\n            fn.apply(void 0, args);\r\n        })\r\n            .catch(function (error) {\r\n            if (onError) {\r\n                onError(error);\r\n            }\r\n        });\r\n    };\r\n}\r\n/**\r\n * Return true if the object passed in implements any of the named methods.\r\n */\r\nfunction implementsAnyMethods(obj, methods) {\r\n    if (typeof obj !== 'object' || obj === null) {\r\n        return false;\r\n    }\r\n    for (var _i = 0, methods_1 = methods; _i < methods_1.length; _i++) {\r\n        var method = methods_1[_i];\r\n        if (method in obj && typeof obj[method] === 'function') {\r\n            return true;\r\n        }\r\n    }\r\n    return false;\r\n}\r\nfunction noop() {\r\n    // do nothing\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Check to make sure the appropriate number of arguments are provided for a public function.\r\n * Throws an error if it fails.\r\n *\r\n * @param {!string} fnName The function name\r\n * @param {!number} minCount The minimum number of arguments to allow for the function call\r\n * @param {!number} maxCount The maximum number of argument to allow for the function call\r\n * @param {!number} argCount The actual number of arguments provided.\r\n */\r\nvar validateArgCount = function (fnName, minCount, maxCount, argCount) {\r\n    var argError;\r\n    if (argCount < minCount) {\r\n        argError = 'at least ' + minCount;\r\n    }\r\n    else if (argCount > maxCount) {\r\n        argError = maxCount === 0 ? 'none' : 'no more than ' + maxCount;\r\n    }\r\n    if (argError) {\r\n        var error = fnName +\r\n            ' failed: Was called with ' +\r\n            argCount +\r\n            (argCount === 1 ? ' argument.' : ' arguments.') +\r\n            ' Expects ' +\r\n            argError +\r\n            '.';\r\n        throw new Error(error);\r\n    }\r\n};\r\n/**\r\n * Generates a string to prefix an error message about failed argument validation\r\n *\r\n * @param {!string} fnName The function name\r\n * @param {!number} argumentNumber The index of the argument\r\n * @param {boolean} optional Whether or not the argument is optional\r\n * @return {!string} The prefix to add to the error thrown for validation.\r\n */\r\nfunction errorPrefix(fnName, argumentNumber, optional) {\r\n    var argName = '';\r\n    switch (argumentNumber) {\r\n        case 1:\r\n            argName = optional ? 'first' : 'First';\r\n            break;\r\n        case 2:\r\n            argName = optional ? 'second' : 'Second';\r\n            break;\r\n        case 3:\r\n            argName = optional ? 'third' : 'Third';\r\n            break;\r\n        case 4:\r\n            argName = optional ? 'fourth' : 'Fourth';\r\n            break;\r\n        default:\r\n            throw new Error('errorPrefix called with argumentNumber > 4.  Need to update it?');\r\n    }\r\n    var error = fnName + ' failed: ';\r\n    error += argName + ' argument ';\r\n    return error;\r\n}\r\n/**\r\n * @param {!string} fnName\r\n * @param {!number} argumentNumber\r\n * @param {!string} namespace\r\n * @param {boolean} optional\r\n */\r\nfunction validateNamespace(fnName, argumentNumber, namespace, optional) {\r\n    if (optional && !namespace)\r\n        return;\r\n    if (typeof namespace !== 'string') {\r\n        //TODO: I should do more validation here. We only allow certain chars in namespaces.\r\n        throw new Error(errorPrefix(fnName, argumentNumber, optional) +\r\n            'must be a valid firebase namespace.');\r\n    }\r\n}\r\nfunction validateCallback(fnName, argumentNumber, callback, optional) {\r\n    if (optional && !callback)\r\n        return;\r\n    if (typeof callback !== 'function')\r\n        throw new Error(errorPrefix(fnName, argumentNumber, optional) +\r\n            'must be a valid function.');\r\n}\r\nfunction validateContextObject(fnName, argumentNumber, context, optional) {\r\n    if (optional && !context)\r\n        return;\r\n    if (typeof context !== 'object' || context === null)\r\n        throw new Error(errorPrefix(fnName, argumentNumber, optional) +\r\n            'must be a valid context object.');\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Code originally came from goog.crypt.stringToUtf8ByteArray, but for some reason they\r\n// automatically replaced '\\r\\n' with '\\n', and they didn't handle surrogate pairs,\r\n// so it's been modified.\r\n// Note that not all Unicode characters appear as single characters in JavaScript strings.\r\n// fromCharCode returns the UTF-16 encoding of a character - so some Unicode characters\r\n// use 2 characters in Javascript.  All 4-byte UTF-8 characters begin with a first\r\n// character in the range 0xD800 - 0xDBFF (the first character of a so-called surrogate\r\n// pair).\r\n// See http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.3\r\n/**\r\n * @param {string} str\r\n * @return {Array}\r\n */\r\nvar stringToByteArray$1 = function (str) {\r\n    var out = [], p = 0;\r\n    for (var i = 0; i < str.length; i++) {\r\n        var c = str.charCodeAt(i);\r\n        // Is this the lead surrogate in a surrogate pair?\r\n        if (c >= 0xd800 && c <= 0xdbff) {\r\n            var high = c - 0xd800; // the high 10 bits.\r\n            i++;\r\n            assert(i < str.length, 'Surrogate pair missing trail surrogate.');\r\n            var low = str.charCodeAt(i) - 0xdc00; // the low 10 bits.\r\n            c = 0x10000 + (high << 10) + low;\r\n        }\r\n        if (c < 128) {\r\n            out[p++] = c;\r\n        }\r\n        else if (c < 2048) {\r\n            out[p++] = (c >> 6) | 192;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else if (c < 65536) {\r\n            out[p++] = (c >> 12) | 224;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else {\r\n            out[p++] = (c >> 18) | 240;\r\n            out[p++] = ((c >> 12) & 63) | 128;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n    }\r\n    return out;\r\n};\r\n/**\r\n * Calculate length without actually converting; useful for doing cheaper validation.\r\n * @param {string} str\r\n * @return {number}\r\n */\r\nvar stringLength = function (str) {\r\n    var p = 0;\r\n    for (var i = 0; i < str.length; i++) {\r\n        var c = str.charCodeAt(i);\r\n        if (c < 128) {\r\n            p++;\r\n        }\r\n        else if (c < 2048) {\r\n            p += 2;\r\n        }\r\n        else if (c >= 0xd800 && c <= 0xdbff) {\r\n            // Lead surrogate of a surrogate pair.  The pair together will take 4 bytes to represent.\r\n            p += 4;\r\n            i++; // skip trail surrogate.\r\n        }\r\n        else {\r\n            p += 3;\r\n        }\r\n    }\r\n    return p;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n\nexports.assert = assert;\nexports.assertionError = assertionError;\nexports.base64 = base64;\nexports.base64Decode = base64Decode;\nexports.base64Encode = base64Encode;\nexports.CONSTANTS = CONSTANTS;\nexports.deepCopy = deepCopy;\nexports.deepExtend = deepExtend;\nexports.patchProperty = patchProperty;\nexports.Deferred = Deferred;\nexports.getUA = getUA;\nexports.isMobileCordova = isMobileCordova;\nexports.isNodeSdk = isNodeSdk;\nexports.isReactNative = isReactNative;\nexports.ErrorFactory = ErrorFactory;\nexports.FirebaseError = FirebaseError;\nexports.patchCapture = patchCapture;\nexports.jsonEval = jsonEval;\nexports.stringify = stringify;\nexports.decode = decode;\nexports.isAdmin = isAdmin;\nexports.issuedAtTime = issuedAtTime;\nexports.isValidFormat = isValidFormat;\nexports.isValidTimestamp = isValidTimestamp;\nexports.clone = clone;\nexports.contains = contains;\nexports.every = every;\nexports.extend = extend;\nexports.findKey = findKey;\nexports.findValue = findValue;\nexports.forEach = forEach;\nexports.getAnyKey = getAnyKey;\nexports.getCount = getCount;\nexports.getValues = getValues;\nexports.isEmpty = isEmpty;\nexports.isNonNullObject = isNonNullObject;\nexports.map = map;\nexports.safeGet = safeGet;\nexports.querystring = querystring;\nexports.querystringDecode = querystringDecode;\nexports.Sha1 = Sha1;\nexports.async = async;\nexports.createSubscribe = createSubscribe;\nexports.errorPrefix = errorPrefix;\nexports.validateArgCount = validateArgCount;\nexports.validateCallback = validateCallback;\nexports.validateContextObject = validateContextObject;\nexports.validateNamespace = validateNamespace;\nexports.stringLength = stringLength;\nexports.stringToByteArray = stringToByteArray$1;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/util/dist/index.cjs.js","var hasOwnProperty = {}.hasOwnProperty;\nmodule.exports = function (it, key) {\n  return hasOwnProperty.call(it, key);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_has.js","// 7.1.15 ToLength\nvar toInteger = require('./_to-integer');\nvar min = Math.min;\nmodule.exports = function (it) {\n  return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_to-length.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport createFocusTrap from 'focus-trap';\n\nexport function createFocusTrapInstance(surfaceEl, acceptButtonEl, focusTrapFactory = createFocusTrap) {\n  return focusTrapFactory(surfaceEl, {\n    initialFocus: acceptButtonEl,\n    clickOutsideDeactivates: true,\n  });\n}\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/dialog/util.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ROOT: 'mdc-dialog',\n  OPEN: 'mdc-dialog--open',\n  ANIMATING: 'mdc-dialog--animating',\n  BACKDROP: 'mdc-dialog__backdrop',\n  SCROLL_LOCK: 'mdc-dialog-scroll-lock',\n  ACCEPT_BTN: 'mdc-dialog__footer__button--accept',\n  CANCEL_BTN: 'mdc-dialog__footer__button--cancel',\n};\n\nconst strings = {\n  OPEN_DIALOG_SELECTOR: '.mdc-dialog--open',\n  DIALOG_SURFACE_SELECTOR: '.mdc-dialog__surface',\n  ACCEPT_SELECTOR: '.mdc-dialog__footer__button--accept',\n  ACCEPT_EVENT: 'MDCDialog:accept',\n  CANCEL_EVENT: 'MDCDialog:cancel',\n};\n\nconst numbers = {\n  DIALOG_ANIMATION_TIME_MS: 120,\n};\n\nexport {cssClasses, strings, numbers};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/dialog/constants.js","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/index';\nimport {cssClasses, strings, numbers} from './constants';\n\nexport default class MDCDialogFoundation extends MDCFoundation {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter() {\n    return ({\n      addClass: (/* className: string */) => {},\n      removeClass: (/* className: string */) => {},\n      addBodyClass: (/* className: string */) => {},\n      removeBodyClass: (/* className: string */) => {},\n      eventTargetHasClass: (/* target: EventTarget, className: string */) => /* boolean */ false,\n      registerInteractionHandler: (/* evt: string, handler: EventListener */) => {},\n      deregisterInteractionHandler: (/* evt: string, handler: EventListener */) => {},\n      registerSurfaceInteractionHandler: (/* evt: string, handler: EventListener */) => {},\n      deregisterSurfaceInteractionHandler: (/* evt: string, handler: EventListener */) => {},\n      registerDocumentKeydownHandler: (/* handler: EventListener */) => {},\n      deregisterDocumentKeydownHandler: (/* handler: EventListener */) => {},\n      notifyAccept: () => {},\n      notifyCancel: () => {},\n      trapFocusOnSurface: () => {},\n      untrapFocusOnSurface: () => {},\n      isDialog: (/* el: Element */) => /* boolean */ false,\n    });\n  }\n\n  constructor(adapter) {\n    super(Object.assign(MDCDialogFoundation.defaultAdapter, adapter));\n    this.isOpen_ = false;\n    this.componentClickHandler_ = (evt) => {\n      if (this.adapter_.eventTargetHasClass(evt.target, cssClasses.BACKDROP)) {\n        this.cancel(true);\n      }\n    };\n    this.dialogClickHandler_ = (evt) => this.handleDialogClick_(evt);\n    this.documentKeydownHandler_ = (evt) => {\n      if (evt.key && evt.key === 'Escape' || evt.keyCode === 27) {\n        this.cancel(true);\n      }\n    };\n\n    this.timerId_ = 0;\n    this.animationTimerEnd_ = (evt) => this.handleAnimationTimerEnd_(evt);\n  };\n\n  destroy() {\n    // Ensure that dialog is cleaned up when destroyed\n    if (this.isOpen_) {\n      this.close();\n    }\n    // Final cleanup of animating class in case the timer has not completed.\n    this.adapter_.removeClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    clearTimeout(this.timerId_);\n  }\n\n  open() {\n    this.isOpen_ = true;\n    this.disableScroll_();\n    this.adapter_.registerDocumentKeydownHandler(this.documentKeydownHandler_);\n    this.adapter_.registerSurfaceInteractionHandler('click', this.dialogClickHandler_);\n    this.adapter_.registerInteractionHandler('click', this.componentClickHandler_);\n    clearTimeout(this.timerId_);\n    this.timerId_ = setTimeout(this.animationTimerEnd_, MDCDialogFoundation.numbers.DIALOG_ANIMATION_TIME_MS);\n    this.adapter_.addClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    this.adapter_.addClass(MDCDialogFoundation.cssClasses.OPEN);\n  }\n\n  close() {\n    this.isOpen_ = false;\n    this.enableScroll_();\n    this.adapter_.deregisterSurfaceInteractionHandler('click', this.dialogClickHandler_);\n    this.adapter_.deregisterDocumentKeydownHandler(this.documentKeydownHandler_);\n    this.adapter_.deregisterInteractionHandler('click', this.componentClickHandler_);\n    this.adapter_.untrapFocusOnSurface();\n    clearTimeout(this.timerId_);\n    this.timerId_ = setTimeout(this.animationTimerEnd_, MDCDialogFoundation.numbers.DIALOG_ANIMATION_TIME_MS);\n    this.adapter_.addClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    this.adapter_.removeClass(MDCDialogFoundation.cssClasses.OPEN);\n  }\n\n  isOpen() {\n    return this.isOpen_;\n  }\n\n  accept(shouldNotify) {\n    if (shouldNotify) {\n      this.adapter_.notifyAccept();\n    }\n\n    this.close();\n  }\n\n  cancel(shouldNotify) {\n    if (shouldNotify) {\n      this.adapter_.notifyCancel();\n    }\n\n    this.close();\n  }\n\n  handleDialogClick_(evt) {\n    const {target} = evt;\n    if (this.adapter_.eventTargetHasClass(target, cssClasses.ACCEPT_BTN)) {\n      this.accept(true);\n    } else if (this.adapter_.eventTargetHasClass(target, cssClasses.CANCEL_BTN)) {\n      this.cancel(true);\n    }\n  }\n\n  handleAnimationTimerEnd_() {\n    this.adapter_.removeClass(MDCDialogFoundation.cssClasses.ANIMATING);\n    if (this.isOpen_) {\n      this.adapter_.trapFocusOnSurface();\n    }\n  };\n\n  disableScroll_() {\n    this.adapter_.addBodyClass(cssClasses.SCROLL_LOCK);\n  }\n\n  enableScroll_() {\n    this.adapter_.removeBodyClass(cssClasses.SCROLL_LOCK);\n  }\n}\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/dialog/foundation.js","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/index';\nimport {MDCRipple} from '@material/ripple/index';\n\nimport MDCDialogFoundation from './foundation';\nimport * as util from './util';\n\nexport {MDCDialogFoundation};\nexport {util};\n\nexport class MDCDialog extends MDCComponent {\n  static attachTo(root) {\n    return new MDCDialog(root);\n  }\n\n  get open() {\n    return this.foundation_.isOpen();\n  }\n\n  get acceptButton_() {\n    return this.root_.querySelector(MDCDialogFoundation.strings.ACCEPT_SELECTOR);\n  }\n\n  get dialogSurface_() {\n    return this.root_.querySelector(MDCDialogFoundation.strings.DIALOG_SURFACE_SELECTOR);\n  }\n\n  initialize() {\n    this.focusTrap_ = util.createFocusTrapInstance(this.dialogSurface_, this.acceptButton_);\n    this.footerBtnRipples_ = [];\n\n    const footerBtns = this.root_.querySelectorAll('.mdc-dialog__footer__button');\n    for (let i = 0, footerBtn; footerBtn = footerBtns[i]; i++) {\n      this.footerBtnRipples_.push(new MDCRipple(footerBtn));\n    }\n  }\n\n  destroy() {\n    this.footerBtnRipples_.forEach((ripple) => ripple.destroy());\n    super.destroy();\n  }\n\n  show() {\n    this.foundation_.open();\n  }\n\n  close() {\n    this.foundation_.close();\n  }\n\n  getDefaultFoundation() {\n    return new MDCDialogFoundation({\n      addClass: (className) => this.root_.classList.add(className),\n      removeClass: (className) => this.root_.classList.remove(className),\n      addBodyClass: (className) => document.body.classList.add(className),\n      removeBodyClass: (className) => document.body.classList.remove(className),\n      eventTargetHasClass: (target, className) => target.classList.contains(className),\n      registerInteractionHandler: (evt, handler) => this.root_.addEventListener(evt, handler),\n      deregisterInteractionHandler: (evt, handler) => this.root_.removeEventListener(evt, handler),\n      registerSurfaceInteractionHandler: (evt, handler) => this.dialogSurface_.addEventListener(evt, handler),\n      deregisterSurfaceInteractionHandler: (evt, handler) => this.dialogSurface_.removeEventListener(evt, handler),\n      registerDocumentKeydownHandler: (handler) => document.addEventListener('keydown', handler),\n      deregisterDocumentKeydownHandler: (handler) => document.removeEventListener('keydown', handler),\n      notifyAccept: () => this.emit(MDCDialogFoundation.strings.ACCEPT_EVENT),\n      notifyCancel: () => this.emit(MDCDialogFoundation.strings.CANCEL_EVENT),\n      trapFocusOnSurface: () => this.focusTrap_.activate(),\n      untrapFocusOnSurface: () => this.focusTrap_.deactivate(),\n      isDialog: (el) => el === this.dialogSurface_,\n    });\n  }\n}\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/dialog/index.js","'use strict';\nvar create = require('./_object-create');\nvar descriptor = require('./_property-desc');\nvar setToStringTag = require('./_set-to-string-tag');\nvar IteratorPrototype = {};\n\n// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()\nrequire('./_hide')(IteratorPrototype, require('./_wks')('iterator'), function () { return this; });\n\nmodule.exports = function (Constructor, NAME, next) {\n  Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) });\n  setToStringTag(Constructor, NAME + ' Iterator');\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_iter-create.js","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.Button = exports.ButtonIcon = void 0;\n\nvar _createClass2 = _interopRequireDefault(require(\"@babel/runtime/helpers/createClass\"));\n\nvar _classCallCheck2 = _interopRequireDefault(require(\"@babel/runtime/helpers/classCallCheck\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(require(\"@babel/runtime/helpers/possibleConstructorReturn\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(require(\"@babel/runtime/helpers/getPrototypeOf\"));\n\nvar _inherits2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inherits\"));\n\nvar _preact = require(\"preact\");\n\nvar _MaterialComponent2 = _interopRequireDefault(require(\"../Base/MaterialComponent\"));\n\nvar _Icon2 = _interopRequireDefault(require(\"../Icon\"));\n\nvar _generateThemeClass = _interopRequireDefault(require(\"../themeUtils/generateThemeClass\"));\n\nvar ButtonIcon =\n/*#__PURE__*/\nfunction (_Icon) {\n  (0, _inherits2.default)(ButtonIcon, _Icon);\n\n  function ButtonIcon() {\n    var _this;\n\n    (0, _classCallCheck2.default)(this, ButtonIcon);\n    _this = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(ButtonIcon).apply(this, arguments));\n    _this.componentName = 'button__icon';\n    return _this;\n  }\n\n  return ButtonIcon;\n}(_Icon2.default);\n\nexports.ButtonIcon = ButtonIcon;\n\nvar Button =\n/*#__PURE__*/\nfunction (_MaterialComponent) {\n  (0, _inherits2.default)(Button, _MaterialComponent);\n\n  function Button() {\n    var _this2;\n\n    (0, _classCallCheck2.default)(this, Button);\n    _this2 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(Button).apply(this, arguments));\n    _this2.componentName = 'button';\n    _this2.mdcProps = ['dense', 'raised', 'unelevated', 'outlined'];\n    _this2.themeProps = ['primary', 'secondary'];\n    return _this2;\n  }\n\n  (0, _createClass2.default)(Button, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      var ButtonElement = props.href ? 'a' : 'button';\n      var className = '';\n      this.themeProps.forEach(function (themeProp) {\n        if (themeProp in props && props[themeProp] !== false) {\n          className += (0, _generateThemeClass.default)(themeProp) + ' ';\n        }\n      });\n      return (0, _preact.h)(ButtonElement, Object.assign({\n        ref: this.setControlRef\n      }, props, {\n        className: className\n      }), this.props.children);\n    }\n  }]);\n  return Button;\n}(_MaterialComponent2.default);\n\nexports.Button = Button;\n\nvar default_1 =\n/*#__PURE__*/\nfunction (_Button) {\n  (0, _inherits2.default)(default_1, _Button);\n\n  function default_1() {\n    (0, _classCallCheck2.default)(this, default_1);\n    return (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(default_1).apply(this, arguments));\n  }\n\n  return default_1;\n}(Button);\n\nexports.default = default_1;\ndefault_1.Icon = ButtonIcon;\n//# sourceMappingURL=index.js.map\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-material-components/Button/index.js","var META = require('./_uid')('meta');\nvar isObject = require('./_is-object');\nvar has = require('./_has');\nvar setDesc = require('./_object-dp').f;\nvar id = 0;\nvar isExtensible = Object.isExtensible || function () {\n  return true;\n};\nvar FREEZE = !require('./_fails')(function () {\n  return isExtensible(Object.preventExtensions({}));\n});\nvar setMeta = function (it) {\n  setDesc(it, META, { value: {\n    i: 'O' + ++id, // object ID\n    w: {}          // weak collections IDs\n  } });\n};\nvar fastKey = function (it, create) {\n  // return primitive with prefix\n  if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;\n  if (!has(it, META)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return 'F';\n    // not necessary to add metadata\n    if (!create) return 'E';\n    // add missing metadata\n    setMeta(it);\n  // return object ID\n  } return it[META].i;\n};\nvar getWeak = function (it, create) {\n  if (!has(it, META)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return true;\n    // not necessary to add metadata\n    if (!create) return false;\n    // add missing metadata\n    setMeta(it);\n  // return hash weak collections IDs\n  } return it[META].w;\n};\n// add metadata on freeze-family methods calling\nvar onFreeze = function (it) {\n  if (FREEZE && meta.NEED && isExtensible(it) && !has(it, META)) setMeta(it);\n  return it;\n};\nvar meta = module.exports = {\n  KEY: META,\n  NEED: false,\n  fastKey: fastKey,\n  getWeak: getWeak,\n  onFreeze: onFreeze\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_meta.js","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation. All rights reserved.\r\nLicensed under the Apache License, Version 2.0 (the \"License\"); you may not use\r\nthis file except in compliance with the License. You may obtain a copy of the\r\nLicense at http://www.apache.org/licenses/LICENSE-2.0\r\n\r\nTHIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\r\nKIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED\r\nWARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,\r\nMERCHANTABLITY OR NON-INFRINGEMENT.\r\n\r\nSee the Apache Version 2.0 License for specific language governing permissions\r\nand limitations under the License.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = Object.setPrototypeOf ||\r\n    ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n    function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\r\n\r\nexport function __extends(d, b) {\r\n    extendStatics(d, b);\r\n    function __() { this.constructor = d; }\r\n    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = Object.assign || function __assign(t) {\r\n    for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n        s = arguments[i];\r\n        for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n    }\r\n    return t;\r\n}\r\n\r\nexport function __rest(s, e) {\r\n    var t = {};\r\n    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n        t[p] = s[p];\r\n    if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)\r\n            t[p[i]] = s[p[i]];\r\n    return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n    return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n    return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (_) try {\r\n            if (f = 1, y && (t = y[op[0] & 2 ? \"return\" : op[0] ? \"throw\" : \"next\"]) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [0, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n}\r\n\r\nexport function __exportStar(m, exports) {\r\n    for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];\r\n}\r\n\r\nexport function __values(o) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator], i = 0;\r\n    if (m) return m.call(o);\r\n    return {\r\n        next: function () {\r\n            if (o && i >= o.length) o = void 0;\r\n            return { value: o && o[i++], done: !o };\r\n        }\r\n    };\r\n}\r\n\r\nexport function __read(o, n) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n    if (!m) return o;\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n    }\r\n    catch (error) { e = { error: error }; }\r\n    finally {\r\n        try {\r\n            if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n        }\r\n        finally { if (e) throw e.error; }\r\n    }\r\n    return ar;\r\n}\r\n\r\nexport function __spread() {\r\n    for (var ar = [], i = 0; i < arguments.length; i++)\r\n        ar = ar.concat(__read(arguments[i]));\r\n    return ar;\r\n}\r\n\r\nexport function __await(v) {\r\n    return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r);  }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { if (o[n]) i[n] = function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; }; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator];\r\n    return m ? m.call(o) : typeof __values === \"function\" ? __values(o) : o[Symbol.iterator]();\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\r\n    result.default = mod;\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/database/node_modules/tslib/tslib.es6.js","import firebase from '@firebase/app';\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview Constants used in the Firebase Storage library.\r\n */\r\n/**\r\n * Domain and scheme for API calls.\r\n */\r\nvar domainBase = 'https://firebasestorage.googleapis.com';\r\n/**\r\n * Domain and scheme for object downloads.\r\n */\r\nvar downloadBase = 'https://firebasestorage.googleapis.com';\r\n/**\r\n * Base URL for non-upload calls to the API.\r\n */\r\nvar apiBaseUrl = '/v0';\r\n/**\r\n * Base URL for upload calls to the API.\r\n */\r\nvar apiUploadBaseUrl = '/v0';\r\nvar configOption = 'storageBucket';\r\n/**\r\n * 2 minutes\r\n */\r\nvar defaultMaxOperationRetryTime = 2 * 60 * 1000;\r\n/**\r\n * 10 minutes\r\n */\r\nvar defaultMaxUploadRetryTime = 10 * 60 * 100;\r\n/**\r\n * This is the value of Number.MIN_SAFE_INTEGER, which is not well supported\r\n * enough for us to use it directly.\r\n */\r\nvar minSafeInteger = -9007199254740991;\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar FirebaseStorageError = /** @class */ (function () {\r\n    function FirebaseStorageError(code, message) {\r\n        this.code_ = prependCode(code);\r\n        this.message_ = 'Firebase Storage: ' + message;\r\n        this.serverResponse_ = null;\r\n        this.name_ = 'FirebaseError';\r\n    }\r\n    FirebaseStorageError.prototype.codeProp = function () {\r\n        return this.code;\r\n    };\r\n    FirebaseStorageError.prototype.codeEquals = function (code) {\r\n        return prependCode(code) === this.codeProp();\r\n    };\r\n    FirebaseStorageError.prototype.serverResponseProp = function () {\r\n        return this.serverResponse_;\r\n    };\r\n    FirebaseStorageError.prototype.setServerResponseProp = function (serverResponse) {\r\n        this.serverResponse_ = serverResponse;\r\n    };\r\n    Object.defineProperty(FirebaseStorageError.prototype, \"name\", {\r\n        get: function () {\r\n            return this.name_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(FirebaseStorageError.prototype, \"code\", {\r\n        get: function () {\r\n            return this.code_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(FirebaseStorageError.prototype, \"message\", {\r\n        get: function () {\r\n            return this.message_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(FirebaseStorageError.prototype, \"serverResponse\", {\r\n        get: function () {\r\n            return this.serverResponse_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    return FirebaseStorageError;\r\n}());\r\nvar Code = {\r\n    // Shared between all platforms\r\n    UNKNOWN: 'unknown',\r\n    OBJECT_NOT_FOUND: 'object-not-found',\r\n    BUCKET_NOT_FOUND: 'bucket-not-found',\r\n    PROJECT_NOT_FOUND: 'project-not-found',\r\n    QUOTA_EXCEEDED: 'quota-exceeded',\r\n    UNAUTHENTICATED: 'unauthenticated',\r\n    UNAUTHORIZED: 'unauthorized',\r\n    RETRY_LIMIT_EXCEEDED: 'retry-limit-exceeded',\r\n    INVALID_CHECKSUM: 'invalid-checksum',\r\n    CANCELED: 'canceled',\r\n    // JS specific\r\n    INVALID_EVENT_NAME: 'invalid-event-name',\r\n    INVALID_URL: 'invalid-url',\r\n    INVALID_DEFAULT_BUCKET: 'invalid-default-bucket',\r\n    NO_DEFAULT_BUCKET: 'no-default-bucket',\r\n    CANNOT_SLICE_BLOB: 'cannot-slice-blob',\r\n    SERVER_FILE_WRONG_SIZE: 'server-file-wrong-size',\r\n    NO_DOWNLOAD_URL: 'no-download-url',\r\n    INVALID_ARGUMENT: 'invalid-argument',\r\n    INVALID_ARGUMENT_COUNT: 'invalid-argument-count',\r\n    APP_DELETED: 'app-deleted',\r\n    INVALID_ROOT_OPERATION: 'invalid-root-operation',\r\n    INVALID_FORMAT: 'invalid-format',\r\n    INTERNAL_ERROR: 'internal-error'\r\n};\r\nfunction prependCode(code) {\r\n    return 'storage/' + code;\r\n}\r\nfunction unknown() {\r\n    var message = 'An unknown error occurred, please check the error payload for ' +\r\n        'server response.';\r\n    return new FirebaseStorageError(Code.UNKNOWN, message);\r\n}\r\nfunction objectNotFound(path) {\r\n    return new FirebaseStorageError(Code.OBJECT_NOT_FOUND, \"Object '\" + path + \"' does not exist.\");\r\n}\r\nfunction quotaExceeded(bucket) {\r\n    return new FirebaseStorageError(Code.QUOTA_EXCEEDED, \"Quota for bucket '\" +\r\n        bucket +\r\n        \"' exceeded, please view quota on \" +\r\n        'https://firebase.google.com/pricing/.');\r\n}\r\nfunction unauthenticated() {\r\n    var message = 'User is not authenticated, please authenticate using Firebase ' +\r\n        'Authentication and try again.';\r\n    return new FirebaseStorageError(Code.UNAUTHENTICATED, message);\r\n}\r\nfunction unauthorized(path) {\r\n    return new FirebaseStorageError(Code.UNAUTHORIZED, \"User does not have permission to access '\" + path + \"'.\");\r\n}\r\nfunction retryLimitExceeded() {\r\n    return new FirebaseStorageError(Code.RETRY_LIMIT_EXCEEDED, 'Max retry time for operation exceeded, please try again.');\r\n}\r\nfunction canceled() {\r\n    return new FirebaseStorageError(Code.CANCELED, 'User canceled the upload/download.');\r\n}\r\nfunction invalidUrl(url) {\r\n    return new FirebaseStorageError(Code.INVALID_URL, \"Invalid URL '\" + url + \"'.\");\r\n}\r\nfunction invalidDefaultBucket(bucket) {\r\n    return new FirebaseStorageError(Code.INVALID_DEFAULT_BUCKET, \"Invalid default bucket '\" + bucket + \"'.\");\r\n}\r\nfunction cannotSliceBlob() {\r\n    return new FirebaseStorageError(Code.CANNOT_SLICE_BLOB, 'Cannot slice blob for upload. Please retry the upload.');\r\n}\r\nfunction serverFileWrongSize() {\r\n    return new FirebaseStorageError(Code.SERVER_FILE_WRONG_SIZE, 'Server recorded incorrect upload file size, please retry the upload.');\r\n}\r\nfunction noDownloadURL() {\r\n    return new FirebaseStorageError(Code.NO_DOWNLOAD_URL, 'The given file does not have any download URLs.');\r\n}\r\nfunction invalidArgument(index, fnName, message) {\r\n    return new FirebaseStorageError(Code.INVALID_ARGUMENT, 'Invalid argument in `' + fnName + '` at index ' + index + ': ' + message);\r\n}\r\nfunction invalidArgumentCount(argMin, argMax, fnName, real) {\r\n    var countPart;\r\n    var plural;\r\n    if (argMin === argMax) {\r\n        countPart = argMin;\r\n        plural = argMin === 1 ? 'argument' : 'arguments';\r\n    }\r\n    else {\r\n        countPart = 'between ' + argMin + ' and ' + argMax;\r\n        plural = 'arguments';\r\n    }\r\n    return new FirebaseStorageError(Code.INVALID_ARGUMENT_COUNT, 'Invalid argument count in `' +\r\n        fnName +\r\n        '`: Expected ' +\r\n        countPart +\r\n        ' ' +\r\n        plural +\r\n        ', received ' +\r\n        real +\r\n        '.');\r\n}\r\nfunction appDeleted() {\r\n    return new FirebaseStorageError(Code.APP_DELETED, 'The Firebase app was deleted.');\r\n}\r\n/**\r\n * @param name The name of the operation that was invalid.\r\n */\r\nfunction invalidRootOperation(name) {\r\n    return new FirebaseStorageError(Code.INVALID_ROOT_OPERATION, \"The operation '\" +\r\n        name +\r\n        \"' cannot be performed on a root reference, create a non-root \" +\r\n        \"reference using child, such as .child('file.png').\");\r\n}\r\n/**\r\n * @param format The format that was not valid.\r\n * @param message A message describing the format violation.\r\n */\r\nfunction invalidFormat(format, message) {\r\n    return new FirebaseStorageError(Code.INVALID_FORMAT, \"String does not match format '\" + format + \"': \" + message);\r\n}\r\n/**\r\n * @param message A message describing the internal error.\r\n */\r\nfunction internalError(message) {\r\n    throw new FirebaseStorageError(Code.INTERNAL_ERROR, 'Internal error: ' + message);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar StringFormat = {\r\n    RAW: 'raw',\r\n    BASE64: 'base64',\r\n    BASE64URL: 'base64url',\r\n    DATA_URL: 'data_url'\r\n};\r\nfunction formatValidator(stringFormat) {\r\n    switch (stringFormat) {\r\n        case StringFormat.RAW:\r\n        case StringFormat.BASE64:\r\n        case StringFormat.BASE64URL:\r\n        case StringFormat.DATA_URL:\r\n            return;\r\n        default:\r\n            throw 'Expected one of the event types: [' +\r\n                StringFormat.RAW +\r\n                ', ' +\r\n                StringFormat.BASE64 +\r\n                ', ' +\r\n                StringFormat.BASE64URL +\r\n                ', ' +\r\n                StringFormat.DATA_URL +\r\n                '].';\r\n    }\r\n}\r\n/**\r\n * @struct\r\n */\r\nvar StringData = /** @class */ (function () {\r\n    function StringData(data, opt_contentType) {\r\n        this.data = data;\r\n        this.contentType = opt_contentType || null;\r\n    }\r\n    return StringData;\r\n}());\r\nfunction dataFromString(format, string) {\r\n    switch (format) {\r\n        case StringFormat.RAW:\r\n            return new StringData(utf8Bytes_(string));\r\n        case StringFormat.BASE64:\r\n        case StringFormat.BASE64URL:\r\n            return new StringData(base64Bytes_(format, string));\r\n        case StringFormat.DATA_URL:\r\n            return new StringData(dataURLBytes_(string), dataURLContentType_(string));\r\n    }\r\n    // assert(false);\r\n    throw unknown();\r\n}\r\nfunction utf8Bytes_(string) {\r\n    var b = [];\r\n    for (var i = 0; i < string.length; i++) {\r\n        var c = string.charCodeAt(i);\r\n        if (c <= 127) {\r\n            b.push(c);\r\n        }\r\n        else {\r\n            if (c <= 2047) {\r\n                b.push(192 | (c >> 6), 128 | (c & 63));\r\n            }\r\n            else {\r\n                if ((c & 64512) == 55296) {\r\n                    // The start of a surrogate pair.\r\n                    var valid = i < string.length - 1 &&\r\n                        (string.charCodeAt(i + 1) & 64512) == 56320;\r\n                    if (!valid) {\r\n                        // The second surrogate wasn't there.\r\n                        b.push(239, 191, 189);\r\n                    }\r\n                    else {\r\n                        var hi = c;\r\n                        var lo = string.charCodeAt(++i);\r\n                        c = 65536 | ((hi & 1023) << 10) | (lo & 1023);\r\n                        b.push(240 | (c >> 18), 128 | ((c >> 12) & 63), 128 | ((c >> 6) & 63), 128 | (c & 63));\r\n                    }\r\n                }\r\n                else {\r\n                    if ((c & 64512) == 56320) {\r\n                        // Invalid low surrogate.\r\n                        b.push(239, 191, 189);\r\n                    }\r\n                    else {\r\n                        b.push(224 | (c >> 12), 128 | ((c >> 6) & 63), 128 | (c & 63));\r\n                    }\r\n                }\r\n            }\r\n        }\r\n    }\r\n    return new Uint8Array(b);\r\n}\r\nfunction percentEncodedBytes_(string) {\r\n    var decoded;\r\n    try {\r\n        decoded = decodeURIComponent(string);\r\n    }\r\n    catch (e) {\r\n        throw invalidFormat(StringFormat.DATA_URL, 'Malformed data URL.');\r\n    }\r\n    return utf8Bytes_(decoded);\r\n}\r\nfunction base64Bytes_(format, string) {\r\n    switch (format) {\r\n        case StringFormat.BASE64: {\r\n            var hasMinus = string.indexOf('-') !== -1;\r\n            var hasUnder = string.indexOf('_') !== -1;\r\n            if (hasMinus || hasUnder) {\r\n                var invalidChar = hasMinus ? '-' : '_';\r\n                throw invalidFormat(format, \"Invalid character '\" +\r\n                    invalidChar +\r\n                    \"' found: is it base64url encoded?\");\r\n            }\r\n            break;\r\n        }\r\n        case StringFormat.BASE64URL: {\r\n            var hasPlus = string.indexOf('+') !== -1;\r\n            var hasSlash = string.indexOf('/') !== -1;\r\n            if (hasPlus || hasSlash) {\r\n                var invalidChar = hasPlus ? '+' : '/';\r\n                throw invalidFormat(format, \"Invalid character '\" + invalidChar + \"' found: is it base64 encoded?\");\r\n            }\r\n            string = string.replace(/-/g, '+').replace(/_/g, '/');\r\n            break;\r\n        }\r\n    }\r\n    var bytes;\r\n    try {\r\n        bytes = atob(string);\r\n    }\r\n    catch (e) {\r\n        throw invalidFormat(format, 'Invalid character found');\r\n    }\r\n    var array = new Uint8Array(bytes.length);\r\n    for (var i = 0; i < bytes.length; i++) {\r\n        array[i] = bytes.charCodeAt(i);\r\n    }\r\n    return array;\r\n}\r\n/**\r\n * @struct\r\n */\r\nvar DataURLParts = /** @class */ (function () {\r\n    function DataURLParts(dataURL) {\r\n        this.base64 = false;\r\n        this.contentType = null;\r\n        var matches = dataURL.match(/^data:([^,]+)?,/);\r\n        if (matches === null) {\r\n            throw invalidFormat(StringFormat.DATA_URL, \"Must be formatted 'data:[<mediatype>][;base64],<data>\");\r\n        }\r\n        var middle = matches[1] || null;\r\n        if (middle != null) {\r\n            this.base64 = endsWith(middle, ';base64');\r\n            this.contentType = this.base64\r\n                ? middle.substring(0, middle.length - ';base64'.length)\r\n                : middle;\r\n        }\r\n        this.rest = dataURL.substring(dataURL.indexOf(',') + 1);\r\n    }\r\n    return DataURLParts;\r\n}());\r\nfunction dataURLBytes_(string) {\r\n    var parts = new DataURLParts(string);\r\n    if (parts.base64) {\r\n        return base64Bytes_(StringFormat.BASE64, parts.rest);\r\n    }\r\n    else {\r\n        return percentEncodedBytes_(parts.rest);\r\n    }\r\n}\r\nfunction dataURLContentType_(string) {\r\n    var parts = new DataURLParts(string);\r\n    return parts.contentType;\r\n}\r\nfunction endsWith(s, end) {\r\n    var longEnough = s.length >= end.length;\r\n    if (!longEnough) {\r\n        return false;\r\n    }\r\n    return s.substring(s.length - end.length) === end;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar TaskEvent = {\r\n    /** Triggered whenever the task changes or progress is updated. */\r\n    STATE_CHANGED: 'state_changed'\r\n};\r\nvar InternalTaskState = {\r\n    RUNNING: 'running',\r\n    PAUSING: 'pausing',\r\n    PAUSED: 'paused',\r\n    SUCCESS: 'success',\r\n    CANCELING: 'canceling',\r\n    CANCELED: 'canceled',\r\n    ERROR: 'error'\r\n};\r\nvar TaskState = {\r\n    /** The task is currently transferring data. */\r\n    RUNNING: 'running',\r\n    /** The task was paused by the user. */\r\n    PAUSED: 'paused',\r\n    /** The task completed successfully. */\r\n    SUCCESS: 'success',\r\n    /** The task was canceled. */\r\n    CANCELED: 'canceled',\r\n    /** The task failed with an error. */\r\n    ERROR: 'error'\r\n};\r\nfunction taskStateFromInternalTaskState(state) {\r\n    switch (state) {\r\n        case InternalTaskState.RUNNING:\r\n        case InternalTaskState.PAUSING:\r\n        case InternalTaskState.CANCELING:\r\n            return TaskState.RUNNING;\r\n        case InternalTaskState.PAUSED:\r\n            return TaskState.PAUSED;\r\n        case InternalTaskState.SUCCESS:\r\n            return TaskState.SUCCESS;\r\n        case InternalTaskState.CANCELED:\r\n            return TaskState.CANCELED;\r\n        case InternalTaskState.ERROR:\r\n            return TaskState.ERROR;\r\n        default:\r\n            // TODO(andysoto): assert(false);\r\n            return TaskState.ERROR;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview Contains methods for working with objects.\r\n */\r\nfunction contains(obj, prop) {\r\n    return Object.prototype.hasOwnProperty.call(obj, prop);\r\n}\r\nfunction forEach(obj, f) {\r\n    for (var key in obj) {\r\n        if (contains(obj, key)) {\r\n            f(key, obj[key]);\r\n        }\r\n    }\r\n}\r\nfunction clone(obj) {\r\n    if (obj == null) {\r\n        return {};\r\n    }\r\n    var c = {};\r\n    forEach(obj, function (key, val) {\r\n        c[key] = val;\r\n    });\r\n    return c;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview Implements the promise abstraction interface for external\r\n * (public SDK) packaging, which just passes through to the firebase-app impl.\r\n */\r\n/**\r\n * @template T\r\n * @param {function((function(T): void),\r\n *                  (function(!Error): void))} resolver\r\n */\r\nfunction make(resolver) {\r\n    return new Promise(resolver);\r\n}\r\n/**\r\n * @template T\r\n */\r\nfunction resolve(value) {\r\n    return Promise.resolve(value);\r\n}\r\nfunction reject(error) {\r\n    return Promise.reject(error);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @return False if the object is undefined or null, true otherwise.\r\n */\r\nfunction isDef(p) {\r\n    return p != null;\r\n}\r\nfunction isJustDef(p) {\r\n    return p !== void 0;\r\n}\r\nfunction isFunction(p) {\r\n    return typeof p === 'function';\r\n}\r\nfunction isObject(p) {\r\n    return typeof p === 'object';\r\n}\r\nfunction isNonNullObject(p) {\r\n    return isObject(p) && p !== null;\r\n}\r\nfunction isNonArrayObject(p) {\r\n    return isObject(p) && !Array.isArray(p);\r\n}\r\nfunction isString(p) {\r\n    return typeof p === 'string' || p instanceof String;\r\n}\r\nfunction isNumber(p) {\r\n    return typeof p === 'number' || p instanceof Number;\r\n}\r\nfunction isNativeBlob(p) {\r\n    return isNativeBlobDefined() && p instanceof Blob;\r\n}\r\nfunction isNativeBlobDefined() {\r\n    return typeof Blob !== 'undefined';\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @enum{number}\r\n */\r\nvar ErrorCode;\r\n(function (ErrorCode) {\r\n    ErrorCode[ErrorCode[\"NO_ERROR\"] = 0] = \"NO_ERROR\";\r\n    ErrorCode[ErrorCode[\"NETWORK_ERROR\"] = 1] = \"NETWORK_ERROR\";\r\n    ErrorCode[ErrorCode[\"ABORT\"] = 2] = \"ABORT\";\r\n})(ErrorCode || (ErrorCode = {}));\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * We use this instead of goog.net.XhrIo because goog.net.XhrIo is hyuuuuge and\r\n * doesn't work in React Native on Android.\r\n */\r\nvar NetworkXhrIo = /** @class */ (function () {\r\n    function NetworkXhrIo() {\r\n        var _this = this;\r\n        this.sent_ = false;\r\n        this.xhr_ = new XMLHttpRequest();\r\n        this.errorCode_ = ErrorCode.NO_ERROR;\r\n        this.sendPromise_ = make(function (resolve, reject) {\r\n            _this.xhr_.addEventListener('abort', function (event) {\r\n                _this.errorCode_ = ErrorCode.ABORT;\r\n                resolve(_this);\r\n            });\r\n            _this.xhr_.addEventListener('error', function (event) {\r\n                _this.errorCode_ = ErrorCode.NETWORK_ERROR;\r\n                resolve(_this);\r\n            });\r\n            _this.xhr_.addEventListener('load', function (event) {\r\n                resolve(_this);\r\n            });\r\n        });\r\n    }\r\n    /**\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.send = function (url, method, opt_body, opt_headers) {\r\n        var _this = this;\r\n        if (this.sent_) {\r\n            throw internalError('cannot .send() more than once');\r\n        }\r\n        this.sent_ = true;\r\n        this.xhr_.open(method, url, true);\r\n        if (isDef(opt_headers)) {\r\n            var headers = opt_headers;\r\n            forEach(headers, function (key, val) {\r\n                _this.xhr_.setRequestHeader(key, val.toString());\r\n            });\r\n        }\r\n        if (isDef(opt_body)) {\r\n            this.xhr_.send(opt_body);\r\n        }\r\n        else {\r\n            this.xhr_.send();\r\n        }\r\n        return this.sendPromise_;\r\n    };\r\n    /**\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.getErrorCode = function () {\r\n        if (!this.sent_) {\r\n            throw internalError('cannot .getErrorCode() before sending');\r\n        }\r\n        return this.errorCode_;\r\n    };\r\n    /**\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.getStatus = function () {\r\n        if (!this.sent_) {\r\n            throw internalError('cannot .getStatus() before sending');\r\n        }\r\n        try {\r\n            return this.xhr_.status;\r\n        }\r\n        catch (e) {\r\n            return -1;\r\n        }\r\n    };\r\n    /**\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.getResponseText = function () {\r\n        if (!this.sent_) {\r\n            throw internalError('cannot .getResponseText() before sending');\r\n        }\r\n        return this.xhr_.responseText;\r\n    };\r\n    /**\r\n     * Aborts the request.\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.abort = function () {\r\n        this.xhr_.abort();\r\n    };\r\n    /**\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.getResponseHeader = function (header) {\r\n        return this.xhr_.getResponseHeader(header);\r\n    };\r\n    /**\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.addUploadProgressListener = function (listener) {\r\n        if (isDef(this.xhr_.upload)) {\r\n            this.xhr_.upload.addEventListener('progress', listener);\r\n        }\r\n    };\r\n    /**\r\n     * @override\r\n     */\r\n    NetworkXhrIo.prototype.removeUploadProgressListener = function (listener) {\r\n        if (isDef(this.xhr_.upload)) {\r\n            this.xhr_.upload.removeEventListener('progress', listener);\r\n        }\r\n    };\r\n    return NetworkXhrIo;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Factory-like class for creating XhrIo instances.\r\n */\r\nvar XhrIoPool = /** @class */ (function () {\r\n    function XhrIoPool() {\r\n    }\r\n    XhrIoPool.prototype.createXhrIo = function () {\r\n        return new NetworkXhrIo();\r\n    };\r\n    return XhrIoPool;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns the Object resulting from parsing the given JSON, or null if the\r\n * given string does not represent a JSON object.\r\n */\r\nfunction jsonObjectOrNull(s) {\r\n    var obj;\r\n    try {\r\n        obj = JSON.parse(s);\r\n    }\r\n    catch (e) {\r\n        return null;\r\n    }\r\n    if (isNonArrayObject(obj)) {\r\n        return obj;\r\n    }\r\n    else {\r\n        return null;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @struct\r\n */\r\nvar Location = /** @class */ (function () {\r\n    function Location(bucket, path) {\r\n        this.bucket = bucket;\r\n        this.path_ = path;\r\n    }\r\n    Object.defineProperty(Location.prototype, \"path\", {\r\n        get: function () {\r\n            return this.path_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Location.prototype.fullServerUrl = function () {\r\n        var encode = encodeURIComponent;\r\n        return '/b/' + encode(this.bucket) + '/o/' + encode(this.path);\r\n    };\r\n    Location.prototype.bucketOnlyServerUrl = function () {\r\n        var encode = encodeURIComponent;\r\n        return '/b/' + encode(this.bucket) + '/o';\r\n    };\r\n    Location.makeFromBucketSpec = function (bucketString) {\r\n        var bucketLocation;\r\n        try {\r\n            bucketLocation = Location.makeFromUrl(bucketString);\r\n        }\r\n        catch (e) {\r\n            // Not valid URL, use as-is. This lets you put bare bucket names in\r\n            // config.\r\n            return new Location(bucketString, '');\r\n        }\r\n        if (bucketLocation.path === '') {\r\n            return bucketLocation;\r\n        }\r\n        else {\r\n            throw invalidDefaultBucket(bucketString);\r\n        }\r\n    };\r\n    Location.makeFromUrl = function (url) {\r\n        var location = null;\r\n        var bucketDomain = '([A-Za-z0-9.\\\\-_]+)';\r\n        function gsModify(loc) {\r\n            if (loc.path.charAt(loc.path.length - 1) === '/') {\r\n                loc.path_ = loc.path_.slice(0, -1);\r\n            }\r\n        }\r\n        var gsPath = '(/(.*))?$';\r\n        var path = '(/([^?#]*).*)?$';\r\n        var gsRegex = new RegExp('^gs://' + bucketDomain + gsPath, 'i');\r\n        var gsIndices = { bucket: 1, path: 3 };\r\n        function httpModify(loc) {\r\n            loc.path_ = decodeURIComponent(loc.path);\r\n        }\r\n        var version = 'v[A-Za-z0-9_]+';\r\n        var httpRegex = new RegExp('^https?://firebasestorage\\\\.googleapis\\\\.com/' +\r\n            version +\r\n            '/b/' +\r\n            bucketDomain +\r\n            '/o' +\r\n            path, 'i');\r\n        var httpIndices = { bucket: 1, path: 3 };\r\n        var groups = [\r\n            { regex: gsRegex, indices: gsIndices, postModify: gsModify },\r\n            { regex: httpRegex, indices: httpIndices, postModify: httpModify }\r\n        ];\r\n        for (var i = 0; i < groups.length; i++) {\r\n            var group = groups[i];\r\n            var captures = group.regex.exec(url);\r\n            if (captures) {\r\n                var bucketValue = captures[group.indices.bucket];\r\n                var pathValue = captures[group.indices.path];\r\n                if (!pathValue) {\r\n                    pathValue = '';\r\n                }\r\n                location = new Location(bucketValue, pathValue);\r\n                group.postModify(location);\r\n                break;\r\n            }\r\n        }\r\n        if (location == null) {\r\n            throw invalidUrl(url);\r\n        }\r\n        return location;\r\n    };\r\n    return Location;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview Contains helper methods for manipulating paths.\r\n */\r\n/**\r\n * @return Null if the path is already at the root.\r\n */\r\nfunction parent(path) {\r\n    if (path.length == 0) {\r\n        return null;\r\n    }\r\n    var index = path.lastIndexOf('/');\r\n    if (index === -1) {\r\n        return '';\r\n    }\r\n    var newPath = path.slice(0, index);\r\n    return newPath;\r\n}\r\nfunction child(path, childPath) {\r\n    var canonicalChildPath = childPath\r\n        .split('/')\r\n        .filter(function (component) {\r\n        return component.length > 0;\r\n    })\r\n        .join('/');\r\n    if (path.length === 0) {\r\n        return canonicalChildPath;\r\n    }\r\n    else {\r\n        return path + '/' + canonicalChildPath;\r\n    }\r\n}\r\n/**\r\n * Returns the last component of a path.\r\n * '/foo/bar' -> 'bar'\r\n * '/foo/bar/baz/' -> 'baz/'\r\n * '/a' -> 'a'\r\n */\r\nfunction lastComponent(path) {\r\n    var index = path.lastIndexOf('/', path.length - 2);\r\n    if (index === -1) {\r\n        return path;\r\n    }\r\n    else {\r\n        return path.slice(index + 1);\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction makeNormalUrl(urlPart) {\r\n    return domainBase + apiBaseUrl + urlPart;\r\n}\r\nfunction makeDownloadUrl(urlPart) {\r\n    return downloadBase + apiBaseUrl + urlPart;\r\n}\r\nfunction makeUploadUrl(urlPart) {\r\n    return domainBase + apiUploadBaseUrl + urlPart;\r\n}\r\nfunction makeQueryString(params) {\r\n    var encode = encodeURIComponent;\r\n    var queryPart = '?';\r\n    forEach(params, function (key, val) {\r\n        var nextPart = encode(key) + '=' + encode(val);\r\n        queryPart = queryPart + nextPart + '&';\r\n    });\r\n    // Chop off the extra '&' or '?' on the end\r\n    queryPart = queryPart.slice(0, -1);\r\n    return queryPart;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction noXform_(metadata, value) {\r\n    return value;\r\n}\r\n/**\r\n * @struct\r\n */\r\nvar Mapping = /** @class */ (function () {\r\n    function Mapping(server, opt_local, opt_writable, opt_xform) {\r\n        this.server = server;\r\n        this.local = opt_local || server;\r\n        this.writable = !!opt_writable;\r\n        this.xform = opt_xform || noXform_;\r\n    }\r\n    return Mapping;\r\n}());\r\nvar mappings_ = null;\r\nfunction xformPath(fullPath) {\r\n    var valid = isString(fullPath);\r\n    if (!valid || fullPath.length < 2) {\r\n        return fullPath;\r\n    }\r\n    else {\r\n        fullPath = fullPath;\r\n        return lastComponent(fullPath);\r\n    }\r\n}\r\nfunction getMappings() {\r\n    if (mappings_) {\r\n        return mappings_;\r\n    }\r\n    var mappings = [];\r\n    mappings.push(new Mapping('bucket'));\r\n    mappings.push(new Mapping('generation'));\r\n    mappings.push(new Mapping('metageneration'));\r\n    mappings.push(new Mapping('name', 'fullPath', true));\r\n    function mappingsXformPath(metadata, fullPath) {\r\n        return xformPath(fullPath);\r\n    }\r\n    var nameMapping = new Mapping('name');\r\n    nameMapping.xform = mappingsXformPath;\r\n    mappings.push(nameMapping);\r\n    /**\r\n     * Coerces the second param to a number, if it is defined.\r\n     */\r\n    function xformSize(metadata, size) {\r\n        if (isDef(size)) {\r\n            return +size;\r\n        }\r\n        else {\r\n            return size;\r\n        }\r\n    }\r\n    var sizeMapping = new Mapping('size');\r\n    sizeMapping.xform = xformSize;\r\n    mappings.push(sizeMapping);\r\n    mappings.push(new Mapping('timeCreated'));\r\n    mappings.push(new Mapping('updated'));\r\n    mappings.push(new Mapping('md5Hash', null, true));\r\n    mappings.push(new Mapping('cacheControl', null, true));\r\n    mappings.push(new Mapping('contentDisposition', null, true));\r\n    mappings.push(new Mapping('contentEncoding', null, true));\r\n    mappings.push(new Mapping('contentLanguage', null, true));\r\n    mappings.push(new Mapping('contentType', null, true));\r\n    mappings.push(new Mapping('metadata', 'customMetadata', true));\r\n    mappings_ = mappings;\r\n    return mappings_;\r\n}\r\nfunction addRef(metadata, authWrapper) {\r\n    function generateRef() {\r\n        var bucket = metadata['bucket'];\r\n        var path = metadata['fullPath'];\r\n        var loc = new Location(bucket, path);\r\n        return authWrapper.makeStorageReference(loc);\r\n    }\r\n    Object.defineProperty(metadata, 'ref', { get: generateRef });\r\n}\r\nfunction fromResource(authWrapper, resource, mappings) {\r\n    var metadata = {};\r\n    metadata['type'] = 'file';\r\n    var len = mappings.length;\r\n    for (var i = 0; i < len; i++) {\r\n        var mapping = mappings[i];\r\n        metadata[mapping.local] = mapping.xform(metadata, resource[mapping.server]);\r\n    }\r\n    addRef(metadata, authWrapper);\r\n    return metadata;\r\n}\r\nfunction fromResourceString(authWrapper, resourceString, mappings) {\r\n    var obj = jsonObjectOrNull(resourceString);\r\n    if (obj === null) {\r\n        return null;\r\n    }\r\n    var resource = obj;\r\n    return fromResource(authWrapper, resource, mappings);\r\n}\r\nfunction downloadUrlFromResourceString(metadata, resourceString) {\r\n    var obj = jsonObjectOrNull(resourceString);\r\n    if (obj === null) {\r\n        return null;\r\n    }\r\n    if (!isString(obj['downloadTokens'])) {\r\n        // This can happen if objects are uploaded through GCS and retrieved\r\n        // through list, so we don't want to throw an Error.\r\n        return null;\r\n    }\r\n    var tokens = obj['downloadTokens'];\r\n    if (tokens.length === 0) {\r\n        return null;\r\n    }\r\n    var encode = encodeURIComponent;\r\n    var tokensList = tokens.split(',');\r\n    var urls = tokensList.map(function (token) {\r\n        var bucket = metadata['bucket'];\r\n        var path = metadata['fullPath'];\r\n        var urlPart = '/b/' + encode(bucket) + '/o/' + encode(path);\r\n        var base = makeDownloadUrl(urlPart);\r\n        var queryString = makeQueryString({\r\n            alt: 'media',\r\n            token: token\r\n        });\r\n        return base + queryString;\r\n    });\r\n    return urls[0];\r\n}\r\nfunction toResourceString(metadata, mappings) {\r\n    var resource = {};\r\n    var len = mappings.length;\r\n    for (var i = 0; i < len; i++) {\r\n        var mapping = mappings[i];\r\n        if (mapping.writable) {\r\n            resource[mapping.server] = metadata[mapping.local];\r\n        }\r\n    }\r\n    return JSON.stringify(resource);\r\n}\r\nfunction metadataValidator(p) {\r\n    var validType = p && isObject(p);\r\n    if (!validType) {\r\n        throw 'Expected Metadata object.';\r\n    }\r\n    for (var key in p) {\r\n        var val = p[key];\r\n        if (key === 'customMetadata') {\r\n            if (!isObject(val)) {\r\n                throw 'Expected object for \\'customMetadata\\' mapping.';\r\n            }\r\n        }\r\n        else {\r\n            if (isNonNullObject(val)) {\r\n                throw \"Mapping for '\" + key + \"' cannot be an object.\";\r\n            }\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param name Name of the function.\r\n * @param specs Argument specs.\r\n * @param passed The actual arguments passed to the function.\r\n * @throws {fbs.Error} If the arguments are invalid.\r\n */\r\nfunction validate(name, specs, passed) {\r\n    var minArgs = specs.length;\r\n    var maxArgs = specs.length;\r\n    for (var i = 0; i < specs.length; i++) {\r\n        if (specs[i].optional) {\r\n            minArgs = i;\r\n            break;\r\n        }\r\n    }\r\n    var validLength = minArgs <= passed.length && passed.length <= maxArgs;\r\n    if (!validLength) {\r\n        throw invalidArgumentCount(minArgs, maxArgs, name, passed.length);\r\n    }\r\n    for (var i = 0; i < passed.length; i++) {\r\n        try {\r\n            specs[i].validator(passed[i]);\r\n        }\r\n        catch (e) {\r\n            if (e instanceof Error) {\r\n                throw invalidArgument(i, name, e.message);\r\n            }\r\n            else {\r\n                throw invalidArgument(i, name, e);\r\n            }\r\n        }\r\n    }\r\n}\r\n/**\r\n * @struct\r\n */\r\nvar ArgSpec = /** @class */ (function () {\r\n    function ArgSpec(validator, opt_optional) {\r\n        var self = this;\r\n        this.validator = function (p) {\r\n            if (self.optional && !isJustDef(p)) {\r\n                return;\r\n            }\r\n            validator(p);\r\n        };\r\n        this.optional = !!opt_optional;\r\n    }\r\n    return ArgSpec;\r\n}());\r\nfunction and_(v1, v2) {\r\n    return function (p) {\r\n        v1(p);\r\n        v2(p);\r\n    };\r\n}\r\nfunction stringSpec(opt_validator, opt_optional) {\r\n    function stringValidator(p) {\r\n        if (!isString(p)) {\r\n            throw 'Expected string.';\r\n        }\r\n    }\r\n    var validator;\r\n    if (opt_validator) {\r\n        validator = and_(stringValidator, opt_validator);\r\n    }\r\n    else {\r\n        validator = stringValidator;\r\n    }\r\n    return new ArgSpec(validator, opt_optional);\r\n}\r\nfunction uploadDataSpec() {\r\n    function validator(p) {\r\n        var valid = p instanceof Uint8Array ||\r\n            p instanceof ArrayBuffer ||\r\n            (isNativeBlobDefined() && p instanceof Blob);\r\n        if (!valid) {\r\n            throw 'Expected Blob or File.';\r\n        }\r\n    }\r\n    return new ArgSpec(validator);\r\n}\r\nfunction metadataSpec(opt_optional) {\r\n    return new ArgSpec(metadataValidator, opt_optional);\r\n}\r\nfunction nonNegativeNumberSpec() {\r\n    function validator(p) {\r\n        var valid = isNumber(p) && p >= 0;\r\n        if (!valid) {\r\n            throw 'Expected a number 0 or greater.';\r\n        }\r\n    }\r\n    return new ArgSpec(validator);\r\n}\r\nfunction looseObjectSpec(opt_validator, opt_optional) {\r\n    function validator(p) {\r\n        var isLooseObject = p === null || (isDef(p) && p instanceof Object);\r\n        if (!isLooseObject) {\r\n            throw 'Expected an Object.';\r\n        }\r\n        if (opt_validator !== undefined && opt_validator !== null) {\r\n            opt_validator(p);\r\n        }\r\n    }\r\n    return new ArgSpec(validator, opt_optional);\r\n}\r\nfunction nullFunctionSpec(opt_optional) {\r\n    function validator(p) {\r\n        var valid = p === null || isFunction(p);\r\n        if (!valid) {\r\n            throw 'Expected a Function.';\r\n        }\r\n    }\r\n    return new ArgSpec(validator, opt_optional);\r\n}\n\nfunction getBlobBuilder() {\r\n    if (typeof BlobBuilder !== 'undefined') {\r\n        return BlobBuilder;\r\n    }\r\n    else if (typeof WebKitBlobBuilder !== 'undefined') {\r\n        return WebKitBlobBuilder;\r\n    }\r\n    else {\r\n        return undefined;\r\n    }\r\n}\r\n/**\r\n * Concatenates one or more values together and converts them to a Blob.\r\n *\r\n * @param var_args The values that will make up the resulting blob.\r\n * @return The blob.\r\n */\r\nfunction getBlob() {\r\n    var var_args = [];\r\n    for (var _i = 0; _i < arguments.length; _i++) {\r\n        var_args[_i] = arguments[_i];\r\n    }\r\n    var BlobBuilder = getBlobBuilder();\r\n    if (BlobBuilder !== undefined) {\r\n        var bb = new BlobBuilder();\r\n        for (var i = 0; i < var_args.length; i++) {\r\n            bb.append(var_args[i]);\r\n        }\r\n        return bb.getBlob();\r\n    }\r\n    else {\r\n        if (isNativeBlobDefined()) {\r\n            return new Blob(var_args);\r\n        }\r\n        else {\r\n            throw Error(\"This browser doesn't seem to support creating Blobs\");\r\n        }\r\n    }\r\n}\r\n/**\r\n * Slices the blob. The returned blob contains data from the start byte\r\n * (inclusive) till the end byte (exclusive). Negative indices cannot be used.\r\n *\r\n * @param blob The blob to be sliced.\r\n * @param start Index of the starting byte.\r\n * @param end Index of the ending byte.\r\n * @return The blob slice or null if not supported.\r\n */\r\nfunction sliceBlob(blob, start, end) {\r\n    if (blob.webkitSlice) {\r\n        return blob.webkitSlice(start, end);\r\n    }\r\n    else if (blob.mozSlice) {\r\n        return blob.mozSlice(start, end);\r\n    }\r\n    else if (blob.slice) {\r\n        return blob.slice(start, end);\r\n    }\r\n    return null;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param opt_elideCopy If true, doesn't copy mutable input data\r\n *     (e.g. Uint8Arrays). Pass true only if you know the objects will not be\r\n *     modified after this blob's construction.\r\n */\r\nvar FbsBlob = /** @class */ (function () {\r\n    function FbsBlob(data, opt_elideCopy) {\r\n        var size = 0;\r\n        var blobType = '';\r\n        if (isNativeBlob(data)) {\r\n            this.data_ = data;\r\n            size = data.size;\r\n            blobType = data.type;\r\n        }\r\n        else if (data instanceof ArrayBuffer) {\r\n            if (opt_elideCopy) {\r\n                this.data_ = new Uint8Array(data);\r\n            }\r\n            else {\r\n                this.data_ = new Uint8Array(data.byteLength);\r\n                this.data_.set(new Uint8Array(data));\r\n            }\r\n            size = this.data_.length;\r\n        }\r\n        else if (data instanceof Uint8Array) {\r\n            if (opt_elideCopy) {\r\n                this.data_ = data;\r\n            }\r\n            else {\r\n                this.data_ = new Uint8Array(data.length);\r\n                this.data_.set(data);\r\n            }\r\n            size = data.length;\r\n        }\r\n        this.size_ = size;\r\n        this.type_ = blobType;\r\n    }\r\n    FbsBlob.prototype.size = function () {\r\n        return this.size_;\r\n    };\r\n    FbsBlob.prototype.type = function () {\r\n        return this.type_;\r\n    };\r\n    FbsBlob.prototype.slice = function (startByte, endByte) {\r\n        if (isNativeBlob(this.data_)) {\r\n            var realBlob = this.data_;\r\n            var sliced = sliceBlob(realBlob, startByte, endByte);\r\n            if (sliced === null) {\r\n                return null;\r\n            }\r\n            return new FbsBlob(sliced);\r\n        }\r\n        else {\r\n            var slice = new Uint8Array(this.data_.buffer, startByte, endByte - startByte);\r\n            return new FbsBlob(slice, true);\r\n        }\r\n    };\r\n    FbsBlob.getBlob = function () {\r\n        var var_args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            var_args[_i] = arguments[_i];\r\n        }\r\n        if (isNativeBlobDefined()) {\r\n            var blobby = var_args.map(function (val) {\r\n                if (val instanceof FbsBlob) {\r\n                    return val.data_;\r\n                }\r\n                else {\r\n                    return val;\r\n                }\r\n            });\r\n            return new FbsBlob(getBlob.apply(null, blobby));\r\n        }\r\n        else {\r\n            var uint8Arrays = var_args.map(function (val) {\r\n                if (isString(val)) {\r\n                    return dataFromString(StringFormat.RAW, val).data;\r\n                }\r\n                else {\r\n                    // Blobs don't exist, so this has to be a Uint8Array.\r\n                    return val.data_;\r\n                }\r\n            });\r\n            var finalLength_1 = 0;\r\n            uint8Arrays.forEach(function (array) {\r\n                finalLength_1 += array.byteLength;\r\n            });\r\n            var merged_1 = new Uint8Array(finalLength_1);\r\n            var index_1 = 0;\r\n            uint8Arrays.forEach(function (array) {\r\n                for (var i = 0; i < array.length; i++) {\r\n                    merged_1[index_1++] = array[i];\r\n                }\r\n            });\r\n            return new FbsBlob(merged_1, true);\r\n        }\r\n    };\r\n    FbsBlob.prototype.uploadData = function () {\r\n        return this.data_;\r\n    };\r\n    return FbsBlob;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns true if the object is contained in the array (compared with ===).\r\n * @template T\r\n */\r\nfunction contains$1(array, elem) {\r\n    return array.indexOf(elem) !== -1;\r\n}\r\n/**\r\n * Returns a shallow copy of the array or array-like object (e.g. arguments).\r\n * @template T\r\n */\r\nfunction clone$1(arraylike) {\r\n    return Array.prototype.slice.call(arraylike);\r\n}\r\n/**\r\n * Removes the given element from the given array, if it is contained.\r\n * Directly modifies the passed-in array.\r\n * @template T\r\n */\r\nfunction remove(array, elem) {\r\n    var i = array.indexOf(elem);\r\n    if (i !== -1) {\r\n        array.splice(i, 1);\r\n    }\r\n}\n\nvar RequestInfo = /** @class */ (function () {\r\n    function RequestInfo(url, method, \r\n    /**\r\n     * Returns the value with which to resolve the request's promise. Only called\r\n     * if the request is successful. Throw from this function to reject the\r\n     * returned Request's promise with the thrown error.\r\n     * Note: The XhrIo passed to this function may be reused after this callback\r\n     * returns. Do not keep a reference to it in any way.\r\n     */\r\n    handler, timeout) {\r\n        this.url = url;\r\n        this.method = method;\r\n        this.handler = handler;\r\n        this.timeout = timeout;\r\n        this.urlParams = {};\r\n        this.headers = {};\r\n        this.body = null;\r\n        this.errorHandler = null;\r\n        /**\r\n         * Called with the current number of bytes uploaded and total size (-1 if not\r\n         * computable) of the request body (i.e. used to report upload progress).\r\n         */\r\n        this.progressCallback = null;\r\n        this.successCodes = [200];\r\n        this.additionalRetryCodes = [];\r\n    }\r\n    return RequestInfo;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Throws the UNKNOWN FirebaseStorageError if cndn is false.\r\n */\r\nfunction handlerCheck(cndn) {\r\n    if (!cndn) {\r\n        throw unknown();\r\n    }\r\n}\r\nfunction metadataHandler(authWrapper, mappings) {\r\n    function handler(xhr, text) {\r\n        var metadata = fromResourceString(authWrapper, text, mappings);\r\n        handlerCheck(metadata !== null);\r\n        return metadata;\r\n    }\r\n    return handler;\r\n}\r\nfunction downloadUrlHandler(authWrapper, mappings) {\r\n    function handler(xhr, text) {\r\n        var metadata = fromResourceString(authWrapper, text, mappings);\r\n        handlerCheck(metadata !== null);\r\n        return downloadUrlFromResourceString(metadata, text);\r\n    }\r\n    return handler;\r\n}\r\nfunction sharedErrorHandler(location) {\r\n    function errorHandler(xhr, err) {\r\n        var newErr;\r\n        if (xhr.getStatus() === 401) {\r\n            newErr = unauthenticated();\r\n        }\r\n        else {\r\n            if (xhr.getStatus() === 402) {\r\n                newErr = quotaExceeded(location.bucket);\r\n            }\r\n            else {\r\n                if (xhr.getStatus() === 403) {\r\n                    newErr = unauthorized(location.path);\r\n                }\r\n                else {\r\n                    newErr = err;\r\n                }\r\n            }\r\n        }\r\n        newErr.setServerResponseProp(err.serverResponseProp());\r\n        return newErr;\r\n    }\r\n    return errorHandler;\r\n}\r\nfunction objectErrorHandler(location) {\r\n    var shared = sharedErrorHandler(location);\r\n    function errorHandler(xhr, err) {\r\n        var newErr = shared(xhr, err);\r\n        if (xhr.getStatus() === 404) {\r\n            newErr = objectNotFound(location.path);\r\n        }\r\n        newErr.setServerResponseProp(err.serverResponseProp());\r\n        return newErr;\r\n    }\r\n    return errorHandler;\r\n}\r\nfunction getMetadata(authWrapper, location, mappings) {\r\n    var urlPart = location.fullServerUrl();\r\n    var url = makeNormalUrl(urlPart);\r\n    var method = 'GET';\r\n    var timeout = authWrapper.maxOperationRetryTime();\r\n    var requestInfo = new RequestInfo(url, method, metadataHandler(authWrapper, mappings), timeout);\r\n    requestInfo.errorHandler = objectErrorHandler(location);\r\n    return requestInfo;\r\n}\r\nfunction getDownloadUrl(authWrapper, location, mappings) {\r\n    var urlPart = location.fullServerUrl();\r\n    var url = makeNormalUrl(urlPart);\r\n    var method = 'GET';\r\n    var timeout = authWrapper.maxOperationRetryTime();\r\n    var requestInfo = new RequestInfo(url, method, downloadUrlHandler(authWrapper, mappings), timeout);\r\n    requestInfo.errorHandler = objectErrorHandler(location);\r\n    return requestInfo;\r\n}\r\nfunction updateMetadata(authWrapper, location, metadata, mappings) {\r\n    var urlPart = location.fullServerUrl();\r\n    var url = makeNormalUrl(urlPart);\r\n    var method = 'PATCH';\r\n    var body = toResourceString(metadata, mappings);\r\n    var headers = { 'Content-Type': 'application/json; charset=utf-8' };\r\n    var timeout = authWrapper.maxOperationRetryTime();\r\n    var requestInfo = new RequestInfo(url, method, metadataHandler(authWrapper, mappings), timeout);\r\n    requestInfo.headers = headers;\r\n    requestInfo.body = body;\r\n    requestInfo.errorHandler = objectErrorHandler(location);\r\n    return requestInfo;\r\n}\r\nfunction deleteObject(authWrapper, location) {\r\n    var urlPart = location.fullServerUrl();\r\n    var url = makeNormalUrl(urlPart);\r\n    var method = 'DELETE';\r\n    var timeout = authWrapper.maxOperationRetryTime();\r\n    function handler(xhr, text) { }\r\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\r\n    requestInfo.successCodes = [200, 204];\r\n    requestInfo.errorHandler = objectErrorHandler(location);\r\n    return requestInfo;\r\n}\r\nfunction determineContentType_(metadata, blob) {\r\n    return ((metadata && metadata['contentType']) ||\r\n        (blob && blob.type()) ||\r\n        'application/octet-stream');\r\n}\r\nfunction metadataForUpload_(location, blob, opt_metadata) {\r\n    var metadata = clone(opt_metadata);\r\n    metadata['fullPath'] = location.path;\r\n    metadata['size'] = blob.size();\r\n    if (!metadata['contentType']) {\r\n        metadata['contentType'] = determineContentType_(null, blob);\r\n    }\r\n    return metadata;\r\n}\r\nfunction multipartUpload(authWrapper, location, mappings, blob, opt_metadata) {\r\n    var urlPart = location.bucketOnlyServerUrl();\r\n    var headers = {\r\n        'X-Goog-Upload-Protocol': 'multipart'\r\n    };\r\n    function genBoundary() {\r\n        var str = '';\r\n        for (var i = 0; i < 2; i++) {\r\n            str =\r\n                str +\r\n                    Math.random()\r\n                        .toString()\r\n                        .slice(2);\r\n        }\r\n        return str;\r\n    }\r\n    var boundary = genBoundary();\r\n    headers['Content-Type'] = 'multipart/related; boundary=' + boundary;\r\n    var metadata = metadataForUpload_(location, blob, opt_metadata);\r\n    var metadataString = toResourceString(metadata, mappings);\r\n    var preBlobPart = '--' +\r\n        boundary +\r\n        '\\r\\n' +\r\n        'Content-Type: application/json; charset=utf-8\\r\\n\\r\\n' +\r\n        metadataString +\r\n        '\\r\\n--' +\r\n        boundary +\r\n        '\\r\\n' +\r\n        'Content-Type: ' +\r\n        metadata['contentType'] +\r\n        '\\r\\n\\r\\n';\r\n    var postBlobPart = '\\r\\n--' + boundary + '--';\r\n    var body = FbsBlob.getBlob(preBlobPart, blob, postBlobPart);\r\n    if (body === null) {\r\n        throw cannotSliceBlob();\r\n    }\r\n    var urlParams = { name: metadata['fullPath'] };\r\n    var url = makeUploadUrl(urlPart);\r\n    var method = 'POST';\r\n    var timeout = authWrapper.maxUploadRetryTime();\r\n    var requestInfo = new RequestInfo(url, method, metadataHandler(authWrapper, mappings), timeout);\r\n    requestInfo.urlParams = urlParams;\r\n    requestInfo.headers = headers;\r\n    requestInfo.body = body.uploadData();\r\n    requestInfo.errorHandler = sharedErrorHandler(location);\r\n    return requestInfo;\r\n}\r\n/**\r\n * @param current The number of bytes that have been uploaded so far.\r\n * @param total The total number of bytes in the upload.\r\n * @param opt_finalized True if the server has finished the upload.\r\n * @param opt_metadata The upload metadata, should\r\n *     only be passed if opt_finalized is true.\r\n * @struct\r\n */\r\nvar ResumableUploadStatus = /** @class */ (function () {\r\n    function ResumableUploadStatus(current, total, finalized, metadata) {\r\n        this.current = current;\r\n        this.total = total;\r\n        this.finalized = !!finalized;\r\n        this.metadata = metadata || null;\r\n    }\r\n    return ResumableUploadStatus;\r\n}());\r\nfunction checkResumeHeader_(xhr, opt_allowed) {\r\n    var status;\r\n    try {\r\n        status = xhr.getResponseHeader('X-Goog-Upload-Status');\r\n    }\r\n    catch (e) {\r\n        handlerCheck(false);\r\n    }\r\n    var allowed = opt_allowed || ['active'];\r\n    handlerCheck(contains$1(allowed, status));\r\n    return status;\r\n}\r\nfunction createResumableUpload(authWrapper, location, mappings, blob, opt_metadata) {\r\n    var urlPart = location.bucketOnlyServerUrl();\r\n    var metadata = metadataForUpload_(location, blob, opt_metadata);\r\n    var urlParams = { name: metadata['fullPath'] };\r\n    var url = makeUploadUrl(urlPart);\r\n    var method = 'POST';\r\n    var headers = {\r\n        'X-Goog-Upload-Protocol': 'resumable',\r\n        'X-Goog-Upload-Command': 'start',\r\n        'X-Goog-Upload-Header-Content-Length': blob.size(),\r\n        'X-Goog-Upload-Header-Content-Type': metadata['contentType'],\r\n        'Content-Type': 'application/json; charset=utf-8'\r\n    };\r\n    var body = toResourceString(metadata, mappings);\r\n    var timeout = authWrapper.maxUploadRetryTime();\r\n    function handler(xhr, text) {\r\n        checkResumeHeader_(xhr);\r\n        var url;\r\n        try {\r\n            url = xhr.getResponseHeader('X-Goog-Upload-URL');\r\n        }\r\n        catch (e) {\r\n            handlerCheck(false);\r\n        }\r\n        handlerCheck(isString(url));\r\n        return url;\r\n    }\r\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\r\n    requestInfo.urlParams = urlParams;\r\n    requestInfo.headers = headers;\r\n    requestInfo.body = body;\r\n    requestInfo.errorHandler = sharedErrorHandler(location);\r\n    return requestInfo;\r\n}\r\n/**\r\n * @param url From a call to fbs.requests.createResumableUpload.\r\n */\r\nfunction getResumableUploadStatus(authWrapper, location, url, blob) {\r\n    var headers = { 'X-Goog-Upload-Command': 'query' };\r\n    function handler(xhr, text) {\r\n        var status = checkResumeHeader_(xhr, ['active', 'final']);\r\n        var sizeString;\r\n        try {\r\n            sizeString = xhr.getResponseHeader('X-Goog-Upload-Size-Received');\r\n        }\r\n        catch (e) {\r\n            handlerCheck(false);\r\n        }\r\n        var size = parseInt(sizeString, 10);\r\n        handlerCheck(!isNaN(size));\r\n        return new ResumableUploadStatus(size, blob.size(), status === 'final');\r\n    }\r\n    var method = 'POST';\r\n    var timeout = authWrapper.maxUploadRetryTime();\r\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\r\n    requestInfo.headers = headers;\r\n    requestInfo.errorHandler = sharedErrorHandler(location);\r\n    return requestInfo;\r\n}\r\n/**\r\n * Any uploads via the resumable upload API must transfer a number of bytes\r\n * that is a multiple of this number.\r\n */\r\nvar resumableUploadChunkSize = 256 * 1024;\r\n/**\r\n * @param url From a call to fbs.requests.createResumableUpload.\r\n * @param chunkSize Number of bytes to upload.\r\n * @param opt_status The previous status.\r\n *     If not passed or null, we start from the beginning.\r\n * @throws fbs.Error If the upload is already complete, the passed in status\r\n *     has a final size inconsistent with the blob, or the blob cannot be sliced\r\n *     for upload.\r\n */\r\nfunction continueResumableUpload(location, authWrapper, url, blob, chunkSize, mappings, opt_status, opt_progressCallback) {\r\n    // TODO(andysoto): standardize on internal asserts\r\n    // assert(!(opt_status && opt_status.finalized));\r\n    var status = new ResumableUploadStatus(0, 0);\r\n    if (opt_status) {\r\n        status.current = opt_status.current;\r\n        status.total = opt_status.total;\r\n    }\r\n    else {\r\n        status.current = 0;\r\n        status.total = blob.size();\r\n    }\r\n    if (blob.size() !== status.total) {\r\n        throw serverFileWrongSize();\r\n    }\r\n    var bytesLeft = status.total - status.current;\r\n    var bytesToUpload = bytesLeft;\r\n    if (chunkSize > 0) {\r\n        bytesToUpload = Math.min(bytesToUpload, chunkSize);\r\n    }\r\n    var startByte = status.current;\r\n    var endByte = startByte + bytesToUpload;\r\n    var uploadCommand = bytesToUpload === bytesLeft ? 'upload, finalize' : 'upload';\r\n    var headers = {\r\n        'X-Goog-Upload-Command': uploadCommand,\r\n        'X-Goog-Upload-Offset': status.current\r\n    };\r\n    var body = blob.slice(startByte, endByte);\r\n    if (body === null) {\r\n        throw cannotSliceBlob();\r\n    }\r\n    function handler(xhr, text) {\r\n        // TODO(andysoto): Verify the MD5 of each uploaded range:\r\n        // the 'x-range-md5' header comes back with status code 308 responses.\r\n        // We'll only be able to bail out though, because you can't re-upload a\r\n        // range that you previously uploaded.\r\n        var uploadStatus = checkResumeHeader_(xhr, ['active', 'final']);\r\n        var newCurrent = status.current + bytesToUpload;\r\n        var size = blob.size();\r\n        var metadata;\r\n        if (uploadStatus === 'final') {\r\n            metadata = metadataHandler(authWrapper, mappings)(xhr, text);\r\n        }\r\n        else {\r\n            metadata = null;\r\n        }\r\n        return new ResumableUploadStatus(newCurrent, size, uploadStatus === 'final', metadata);\r\n    }\r\n    var method = 'POST';\r\n    var timeout = authWrapper.maxUploadRetryTime();\r\n    var requestInfo = new RequestInfo(url, method, handler, timeout);\r\n    requestInfo.headers = headers;\r\n    requestInfo.body = body.uploadData();\r\n    requestInfo.progressCallback = opt_progressCallback || null;\r\n    requestInfo.errorHandler = sharedErrorHandler(location);\r\n    return requestInfo;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @struct\r\n */\r\nvar Observer = /** @class */ (function () {\r\n    function Observer(nextOrObserver, opt_error, opt_complete) {\r\n        var asFunctions = isFunction(nextOrObserver) ||\r\n            isDef(opt_error) ||\r\n            isDef(opt_complete);\r\n        if (asFunctions) {\r\n            this.next = nextOrObserver;\r\n            this.error = opt_error || null;\r\n            this.complete = opt_complete || null;\r\n        }\r\n        else {\r\n            var observer = nextOrObserver;\r\n            this.next = observer.next || null;\r\n            this.error = observer.error || null;\r\n            this.complete = observer.complete || null;\r\n        }\r\n    }\r\n    return Observer;\r\n}());\n\nvar UploadTaskSnapshot = /** @class */ (function () {\r\n    function UploadTaskSnapshot(bytesTransferred, totalBytes, state, metadata, task, ref) {\r\n        this.bytesTransferred = bytesTransferred;\r\n        this.totalBytes = totalBytes;\r\n        this.state = state;\r\n        this.metadata = metadata;\r\n        this.task = task;\r\n        this.ref = ref;\r\n    }\r\n    return UploadTaskSnapshot;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns a function that invokes f with its arguments asynchronously as a\r\n * microtask, i.e. as soon as possible after the current script returns back\r\n * into browser code.\r\n */\r\nfunction async(f) {\r\n    return function () {\r\n        var argsToForward = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            argsToForward[_i] = arguments[_i];\r\n        }\r\n        resolve(true).then(function () {\r\n            f.apply(null, argsToForward);\r\n        });\r\n    };\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Represents a blob being uploaded. Can be used to pause/resume/cancel the\r\n * upload and manage callbacks for various events.\r\n */\r\nvar UploadTask = /** @class */ (function () {\r\n    /**\r\n     * @param ref The firebaseStorage.Reference object this task came\r\n     *     from, untyped to avoid cyclic dependencies.\r\n     * @param blob The blob to upload.\r\n     */\r\n    function UploadTask(ref, authWrapper, location, mappings, blob, metadata) {\r\n        if (metadata === void 0) { metadata = null; }\r\n        var _this = this;\r\n        this.transferred_ = 0;\r\n        this.needToFetchStatus_ = false;\r\n        this.needToFetchMetadata_ = false;\r\n        this.observers_ = [];\r\n        this.error_ = null;\r\n        this.uploadUrl_ = null;\r\n        this.request_ = null;\r\n        this.chunkMultiplier_ = 1;\r\n        this.resolve_ = null;\r\n        this.reject_ = null;\r\n        this.ref_ = ref;\r\n        this.authWrapper_ = authWrapper;\r\n        this.location_ = location;\r\n        this.blob_ = blob;\r\n        this.metadata_ = metadata;\r\n        this.mappings_ = mappings;\r\n        this.resumable_ = this.shouldDoResumable_(this.blob_);\r\n        this.state_ = InternalTaskState.RUNNING;\r\n        this.errorHandler_ = function (error) {\r\n            _this.request_ = null;\r\n            _this.chunkMultiplier_ = 1;\r\n            if (error.codeEquals(Code.CANCELED)) {\r\n                _this.needToFetchStatus_ = true;\r\n                _this.completeTransitions_();\r\n            }\r\n            else {\r\n                _this.error_ = error;\r\n                _this.transition_(InternalTaskState.ERROR);\r\n            }\r\n        };\r\n        this.metadataErrorHandler_ = function (error) {\r\n            _this.request_ = null;\r\n            if (error.codeEquals(Code.CANCELED)) {\r\n                _this.completeTransitions_();\r\n            }\r\n            else {\r\n                _this.error_ = error;\r\n                _this.transition_(InternalTaskState.ERROR);\r\n            }\r\n        };\r\n        this.promise_ = make(function (resolve, reject) {\r\n            _this.resolve_ = resolve;\r\n            _this.reject_ = reject;\r\n            _this.start_();\r\n        });\r\n        // Prevent uncaught rejections on the internal promise from bubbling out\r\n        // to the top level with a dummy handler.\r\n        this.promise_.then(null, function () { });\r\n    }\r\n    UploadTask.prototype.makeProgressCallback_ = function () {\r\n        var _this = this;\r\n        var sizeBefore = this.transferred_;\r\n        return function (loaded, total) {\r\n            _this.updateProgress_(sizeBefore + loaded);\r\n        };\r\n    };\r\n    UploadTask.prototype.shouldDoResumable_ = function (blob) {\r\n        return blob.size() > 256 * 1024;\r\n    };\r\n    UploadTask.prototype.start_ = function () {\r\n        if (this.state_ !== InternalTaskState.RUNNING) {\r\n            // This can happen if someone pauses us in a resume callback, for example.\r\n            return;\r\n        }\r\n        if (this.request_ !== null) {\r\n            return;\r\n        }\r\n        if (this.resumable_) {\r\n            if (this.uploadUrl_ === null) {\r\n                this.createResumable_();\r\n            }\r\n            else {\r\n                if (this.needToFetchStatus_) {\r\n                    this.fetchStatus_();\r\n                }\r\n                else {\r\n                    if (this.needToFetchMetadata_) {\r\n                        // Happens if we miss the metadata on upload completion.\r\n                        this.fetchMetadata_();\r\n                    }\r\n                    else {\r\n                        this.continueUpload_();\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        else {\r\n            this.oneShotUpload_();\r\n        }\r\n    };\r\n    UploadTask.prototype.resolveToken_ = function (callback) {\r\n        var _this = this;\r\n        this.authWrapper_.getAuthToken().then(function (authToken) {\r\n            switch (_this.state_) {\r\n                case InternalTaskState.RUNNING:\r\n                    callback(authToken);\r\n                    break;\r\n                case InternalTaskState.CANCELING:\r\n                    _this.transition_(InternalTaskState.CANCELED);\r\n                    break;\r\n                case InternalTaskState.PAUSING:\r\n                    _this.transition_(InternalTaskState.PAUSED);\r\n                    break;\r\n                default:\r\n            }\r\n        });\r\n    };\r\n    // TODO(andysoto): assert false\r\n    UploadTask.prototype.createResumable_ = function () {\r\n        var _this = this;\r\n        this.resolveToken_(function (authToken) {\r\n            var requestInfo = createResumableUpload(_this.authWrapper_, _this.location_, _this.mappings_, _this.blob_, _this.metadata_);\r\n            var createRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\r\n            _this.request_ = createRequest;\r\n            createRequest.getPromise().then(function (url) {\r\n                _this.request_ = null;\r\n                _this.uploadUrl_ = url;\r\n                _this.needToFetchStatus_ = false;\r\n                _this.completeTransitions_();\r\n            }, _this.errorHandler_);\r\n        });\r\n    };\r\n    UploadTask.prototype.fetchStatus_ = function () {\r\n        var _this = this;\r\n        // TODO(andysoto): assert(this.uploadUrl_ !== null);\r\n        var url = this.uploadUrl_;\r\n        this.resolveToken_(function (authToken) {\r\n            var requestInfo = getResumableUploadStatus(_this.authWrapper_, _this.location_, url, _this.blob_);\r\n            var statusRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\r\n            _this.request_ = statusRequest;\r\n            statusRequest.getPromise().then(function (status) {\r\n                status = status;\r\n                _this.request_ = null;\r\n                _this.updateProgress_(status.current);\r\n                _this.needToFetchStatus_ = false;\r\n                if (status.finalized) {\r\n                    _this.needToFetchMetadata_ = true;\r\n                }\r\n                _this.completeTransitions_();\r\n            }, _this.errorHandler_);\r\n        });\r\n    };\r\n    UploadTask.prototype.continueUpload_ = function () {\r\n        var _this = this;\r\n        var chunkSize = resumableUploadChunkSize * this.chunkMultiplier_;\r\n        var status = new ResumableUploadStatus(this.transferred_, this.blob_.size());\r\n        // TODO(andysoto): assert(this.uploadUrl_ !== null);\r\n        var url = this.uploadUrl_;\r\n        this.resolveToken_(function (authToken) {\r\n            var requestInfo;\r\n            try {\r\n                requestInfo = continueResumableUpload(_this.location_, _this.authWrapper_, url, _this.blob_, chunkSize, _this.mappings_, status, _this.makeProgressCallback_());\r\n            }\r\n            catch (e) {\r\n                _this.error_ = e;\r\n                _this.transition_(InternalTaskState.ERROR);\r\n                return;\r\n            }\r\n            var uploadRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\r\n            _this.request_ = uploadRequest;\r\n            uploadRequest\r\n                .getPromise()\r\n                .then(function (newStatus) {\r\n                _this.increaseMultiplier_();\r\n                _this.request_ = null;\r\n                _this.updateProgress_(newStatus.current);\r\n                if (newStatus.finalized) {\r\n                    _this.metadata_ = newStatus.metadata;\r\n                    _this.transition_(InternalTaskState.SUCCESS);\r\n                }\r\n                else {\r\n                    _this.completeTransitions_();\r\n                }\r\n            }, _this.errorHandler_);\r\n        });\r\n    };\r\n    UploadTask.prototype.increaseMultiplier_ = function () {\r\n        var currentSize = resumableUploadChunkSize * this.chunkMultiplier_;\r\n        // Max chunk size is 32M.\r\n        if (currentSize < 32 * 1024 * 1024) {\r\n            this.chunkMultiplier_ *= 2;\r\n        }\r\n    };\r\n    UploadTask.prototype.fetchMetadata_ = function () {\r\n        var _this = this;\r\n        this.resolveToken_(function (authToken) {\r\n            var requestInfo = getMetadata(_this.authWrapper_, _this.location_, _this.mappings_);\r\n            var metadataRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\r\n            _this.request_ = metadataRequest;\r\n            metadataRequest.getPromise().then(function (metadata) {\r\n                _this.request_ = null;\r\n                _this.metadata_ = metadata;\r\n                _this.transition_(InternalTaskState.SUCCESS);\r\n            }, _this.metadataErrorHandler_);\r\n        });\r\n    };\r\n    UploadTask.prototype.oneShotUpload_ = function () {\r\n        var _this = this;\r\n        this.resolveToken_(function (authToken) {\r\n            var requestInfo = multipartUpload(_this.authWrapper_, _this.location_, _this.mappings_, _this.blob_, _this.metadata_);\r\n            var multipartRequest = _this.authWrapper_.makeRequest(requestInfo, authToken);\r\n            _this.request_ = multipartRequest;\r\n            multipartRequest.getPromise().then(function (metadata) {\r\n                _this.request_ = null;\r\n                _this.metadata_ = metadata;\r\n                _this.updateProgress_(_this.blob_.size());\r\n                _this.transition_(InternalTaskState.SUCCESS);\r\n            }, _this.errorHandler_);\r\n        });\r\n    };\r\n    UploadTask.prototype.updateProgress_ = function (transferred) {\r\n        var old = this.transferred_;\r\n        this.transferred_ = transferred;\r\n        // A progress update can make the \"transferred\" value smaller (e.g. a\r\n        // partial upload not completed by server, after which the \"transferred\"\r\n        // value may reset to the value at the beginning of the request).\r\n        if (this.transferred_ !== old) {\r\n            this.notifyObservers_();\r\n        }\r\n    };\r\n    UploadTask.prototype.transition_ = function (state) {\r\n        if (this.state_ === state) {\r\n            return;\r\n        }\r\n        switch (state) {\r\n            case InternalTaskState.CANCELING:\r\n                // TODO(andysoto):\r\n                // assert(this.state_ === InternalTaskState.RUNNING ||\r\n                //        this.state_ === InternalTaskState.PAUSING);\r\n                this.state_ = state;\r\n                if (this.request_ !== null) {\r\n                    this.request_.cancel();\r\n                }\r\n                break;\r\n            case InternalTaskState.PAUSING:\r\n                // TODO(andysoto):\r\n                // assert(this.state_ === InternalTaskState.RUNNING);\r\n                this.state_ = state;\r\n                if (this.request_ !== null) {\r\n                    this.request_.cancel();\r\n                }\r\n                break;\r\n            case InternalTaskState.RUNNING:\r\n                // TODO(andysoto):\r\n                // assert(this.state_ === InternalTaskState.PAUSED ||\r\n                //        this.state_ === InternalTaskState.PAUSING);\r\n                var wasPaused = this.state_ === InternalTaskState.PAUSED;\r\n                this.state_ = state;\r\n                if (wasPaused) {\r\n                    this.notifyObservers_();\r\n                    this.start_();\r\n                }\r\n                break;\r\n            case InternalTaskState.PAUSED:\r\n                // TODO(andysoto):\r\n                // assert(this.state_ === InternalTaskState.PAUSING);\r\n                this.state_ = state;\r\n                this.notifyObservers_();\r\n                break;\r\n            case InternalTaskState.CANCELED:\r\n                // TODO(andysoto):\r\n                // assert(this.state_ === InternalTaskState.PAUSED ||\r\n                //        this.state_ === InternalTaskState.CANCELING);\r\n                this.error_ = canceled();\r\n                this.state_ = state;\r\n                this.notifyObservers_();\r\n                break;\r\n            case InternalTaskState.ERROR:\r\n                // TODO(andysoto):\r\n                // assert(this.state_ === InternalTaskState.RUNNING ||\r\n                //        this.state_ === InternalTaskState.PAUSING ||\r\n                //        this.state_ === InternalTaskState.CANCELING);\r\n                this.state_ = state;\r\n                this.notifyObservers_();\r\n                break;\r\n            case InternalTaskState.SUCCESS:\r\n                // TODO(andysoto):\r\n                // assert(this.state_ === InternalTaskState.RUNNING ||\r\n                //        this.state_ === InternalTaskState.PAUSING ||\r\n                //        this.state_ === InternalTaskState.CANCELING);\r\n                this.state_ = state;\r\n                this.notifyObservers_();\r\n                break;\r\n        }\r\n    };\r\n    UploadTask.prototype.completeTransitions_ = function () {\r\n        switch (this.state_) {\r\n            case InternalTaskState.PAUSING:\r\n                this.transition_(InternalTaskState.PAUSED);\r\n                break;\r\n            case InternalTaskState.CANCELING:\r\n                this.transition_(InternalTaskState.CANCELED);\r\n                break;\r\n            case InternalTaskState.RUNNING:\r\n                this.start_();\r\n                break;\r\n            default:\r\n                // TODO(andysoto): assert(false);\r\n                break;\r\n        }\r\n    };\r\n    Object.defineProperty(UploadTask.prototype, \"snapshot\", {\r\n        get: function () {\r\n            var externalState = taskStateFromInternalTaskState(this.state_);\r\n            return new UploadTaskSnapshot(this.transferred_, this.blob_.size(), externalState, this.metadata_, this, this.ref_);\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * Adds a callback for an event.\r\n     * @param type The type of event to listen for.\r\n     */\r\n    UploadTask.prototype.on = function (type, nextOrObserver, error, completed) {\r\n        if (nextOrObserver === void 0) { nextOrObserver = undefined; }\r\n        if (error === void 0) { error = undefined; }\r\n        if (completed === void 0) { completed = undefined; }\r\n        function typeValidator(_p) {\r\n            if (type !== TaskEvent.STATE_CHANGED) {\r\n                throw \"Expected one of the event types: [\" + TaskEvent.STATE_CHANGED + \"].\";\r\n            }\r\n        }\r\n        var nextOrObserverMessage = 'Expected a function or an Object with one of ' +\r\n            '`next`, `error`, `complete` properties.';\r\n        var nextValidator = nullFunctionSpec(true).validator;\r\n        var observerValidator = looseObjectSpec(null, true).validator;\r\n        function nextOrObserverValidator(p) {\r\n            try {\r\n                nextValidator(p);\r\n                return;\r\n            }\r\n            catch (e) { }\r\n            try {\r\n                observerValidator(p);\r\n                var anyDefined = isJustDef(p['next']) ||\r\n                    isJustDef(p['error']) ||\r\n                    isJustDef(p['complete']);\r\n                if (!anyDefined) {\r\n                    throw '';\r\n                }\r\n                return;\r\n            }\r\n            catch (e) {\r\n                throw nextOrObserverMessage;\r\n            }\r\n        }\r\n        var specs = [\r\n            stringSpec(typeValidator),\r\n            looseObjectSpec(nextOrObserverValidator, true),\r\n            nullFunctionSpec(true),\r\n            nullFunctionSpec(true)\r\n        ];\r\n        validate('on', specs, arguments);\r\n        var self = this;\r\n        function makeBinder(specs) {\r\n            function binder(nextOrObserver, error, opt_complete) {\r\n                if (specs !== null) {\r\n                    validate('on', specs, arguments);\r\n                }\r\n                var observer = new Observer(nextOrObserver, error, completed);\r\n                self.addObserver_(observer);\r\n                return function () {\r\n                    self.removeObserver_(observer);\r\n                };\r\n            }\r\n            return binder;\r\n        }\r\n        function binderNextOrObserverValidator(p) {\r\n            if (p === null) {\r\n                throw nextOrObserverMessage;\r\n            }\r\n            nextOrObserverValidator(p);\r\n        }\r\n        var binderSpecs = [\r\n            looseObjectSpec(binderNextOrObserverValidator),\r\n            nullFunctionSpec(true),\r\n            nullFunctionSpec(true)\r\n        ];\r\n        var typeOnly = !(isJustDef(nextOrObserver) ||\r\n            isJustDef(error) ||\r\n            isJustDef(completed));\r\n        if (typeOnly) {\r\n            return makeBinder(binderSpecs);\r\n        }\r\n        else {\r\n            return makeBinder(null)(nextOrObserver, error, completed);\r\n        }\r\n    };\r\n    /**\r\n     * This object behaves like a Promise, and resolves with its snapshot data\r\n     * when the upload completes.\r\n     * @param onFulfilled The fulfillment callback. Promise chaining works as normal.\r\n     * @param onRejected The rejection callback.\r\n     */\r\n    UploadTask.prototype.then = function (onFulfilled, onRejected) {\r\n        // These casts are needed so that TypeScript can infer the types of the\r\n        // resulting Promise.\r\n        return this.promise_.then(onFulfilled, onRejected);\r\n    };\r\n    /**\r\n     * Equivalent to calling `then(null, onRejected)`.\r\n     */\r\n    UploadTask.prototype.catch = function (onRejected) {\r\n        return this.then(null, onRejected);\r\n    };\r\n    /**\r\n     * Adds the given observer.\r\n     */\r\n    UploadTask.prototype.addObserver_ = function (observer) {\r\n        this.observers_.push(observer);\r\n        this.notifyObserver_(observer);\r\n    };\r\n    /**\r\n     * Removes the given observer.\r\n     */\r\n    UploadTask.prototype.removeObserver_ = function (observer) {\r\n        remove(this.observers_, observer);\r\n    };\r\n    UploadTask.prototype.notifyObservers_ = function () {\r\n        var _this = this;\r\n        this.finishPromise_();\r\n        var observers = clone$1(this.observers_);\r\n        observers.forEach(function (observer) {\r\n            _this.notifyObserver_(observer);\r\n        });\r\n    };\r\n    UploadTask.prototype.finishPromise_ = function () {\r\n        if (this.resolve_ !== null) {\r\n            var triggered = true;\r\n            switch (taskStateFromInternalTaskState(this.state_)) {\r\n                case TaskState.SUCCESS:\r\n                    async(this.resolve_.bind(null, this.snapshot))();\r\n                    break;\r\n                case TaskState.CANCELED:\r\n                case TaskState.ERROR:\r\n                    var toCall = this.reject_;\r\n                    async(toCall.bind(null, this.error_))();\r\n                    break;\r\n                default:\r\n                    triggered = false;\r\n                    break;\r\n            }\r\n            if (triggered) {\r\n                this.resolve_ = null;\r\n                this.reject_ = null;\r\n            }\r\n        }\r\n    };\r\n    UploadTask.prototype.notifyObserver_ = function (observer) {\r\n        var externalState = taskStateFromInternalTaskState(this.state_);\r\n        switch (externalState) {\r\n            case TaskState.RUNNING:\r\n            case TaskState.PAUSED:\r\n                if (observer.next !== null) {\r\n                    async(observer.next.bind(observer, this.snapshot))();\r\n                }\r\n                break;\r\n            case TaskState.SUCCESS:\r\n                if (observer.complete !== null) {\r\n                    async(observer.complete.bind(observer))();\r\n                }\r\n                break;\r\n            case TaskState.CANCELED:\r\n            case TaskState.ERROR:\r\n                if (observer.error !== null) {\r\n                    async(observer.error.bind(observer, this.error_))();\r\n                }\r\n                break;\r\n            default:\r\n                // TODO(andysoto): assert(false);\r\n                if (observer.error !== null) {\r\n                    async(observer.error.bind(observer, this.error_))();\r\n                }\r\n        }\r\n    };\r\n    /**\r\n     * Resumes a paused task. Has no effect on a currently running or failed task.\r\n     * @return True if the operation took effect, false if ignored.\r\n     */\r\n    UploadTask.prototype.resume = function () {\r\n        validate('resume', [], arguments);\r\n        var valid = this.state_ === InternalTaskState.PAUSED ||\r\n            this.state_ === InternalTaskState.PAUSING;\r\n        if (valid) {\r\n            this.transition_(InternalTaskState.RUNNING);\r\n        }\r\n        return valid;\r\n    };\r\n    /**\r\n     * Pauses a currently running task. Has no effect on a paused or failed task.\r\n     * @return True if the operation took effect, false if ignored.\r\n     */\r\n    UploadTask.prototype.pause = function () {\r\n        validate('pause', [], arguments);\r\n        var valid = this.state_ === InternalTaskState.RUNNING;\r\n        if (valid) {\r\n            this.transition_(InternalTaskState.PAUSING);\r\n        }\r\n        return valid;\r\n    };\r\n    /**\r\n     * Cancels a currently running or paused task. Has no effect on a complete or\r\n     * failed task.\r\n     * @return True if the operation took effect, false if ignored.\r\n     */\r\n    UploadTask.prototype.cancel = function () {\r\n        validate('cancel', [], arguments);\r\n        var valid = this.state_ === InternalTaskState.RUNNING ||\r\n            this.state_ === InternalTaskState.PAUSING;\r\n        if (valid) {\r\n            this.transition_(InternalTaskState.CANCELING);\r\n        }\r\n        return valid;\r\n    };\r\n    return UploadTask;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Provides methods to interact with a bucket in the Firebase Storage service.\r\n * @param location An fbs.location, or the URL at\r\n *     which to base this object, in one of the following forms:\r\n *         gs://<bucket>/<object-path>\r\n *         http[s]://firebasestorage.googleapis.com/\r\n *                     <api-version>/b/<bucket>/o/<object-path>\r\n *     Any query or fragment strings will be ignored in the http[s]\r\n *     format. If no value is passed, the storage object will use a URL based on\r\n *     the project ID of the base firebase.App instance.\r\n */\r\nvar Reference = /** @class */ (function () {\r\n    function Reference(authWrapper, location) {\r\n        this.authWrapper = authWrapper;\r\n        if (location instanceof Location) {\r\n            this.location = location;\r\n        }\r\n        else {\r\n            this.location = Location.makeFromUrl(location);\r\n        }\r\n    }\r\n    /**\r\n     * @return The URL for the bucket and path this object references,\r\n     *     in the form gs://<bucket>/<object-path>\r\n     * @override\r\n     */\r\n    Reference.prototype.toString = function () {\r\n        validate('toString', [], arguments);\r\n        return 'gs://' + this.location.bucket + '/' + this.location.path;\r\n    };\r\n    Reference.prototype.newRef = function (authWrapper, location) {\r\n        return new Reference(authWrapper, location);\r\n    };\r\n    Reference.prototype.mappings = function () {\r\n        return getMappings();\r\n    };\r\n    /**\r\n     * @return A reference to the object obtained by\r\n     *     appending childPath, removing any duplicate, beginning, or trailing\r\n     *     slashes.\r\n     */\r\n    Reference.prototype.child = function (childPath) {\r\n        validate('child', [stringSpec()], arguments);\r\n        var newPath = child(this.location.path, childPath);\r\n        var location = new Location(this.location.bucket, newPath);\r\n        return this.newRef(this.authWrapper, location);\r\n    };\r\n    Object.defineProperty(Reference.prototype, \"parent\", {\r\n        /**\r\n         * @return A reference to the parent of the\r\n         *     current object, or null if the current object is the root.\r\n         */\r\n        get: function () {\r\n            var newPath = parent(this.location.path);\r\n            if (newPath === null) {\r\n                return null;\r\n            }\r\n            var location = new Location(this.location.bucket, newPath);\r\n            return this.newRef(this.authWrapper, location);\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"root\", {\r\n        /**\r\n         * @return An reference to the root of this\r\n         *     object's bucket.\r\n         */\r\n        get: function () {\r\n            var location = new Location(this.location.bucket, '');\r\n            return this.newRef(this.authWrapper, location);\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"bucket\", {\r\n        get: function () {\r\n            return this.location.bucket;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"fullPath\", {\r\n        get: function () {\r\n            return this.location.path;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"name\", {\r\n        get: function () {\r\n            return lastComponent(this.location.path);\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Reference.prototype, \"storage\", {\r\n        get: function () {\r\n            return this.authWrapper.service();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * Uploads a blob to this object's location.\r\n     * @param data The blob to upload.\r\n     * @return An UploadTask that lets you control and\r\n     *     observe the upload.\r\n     */\r\n    Reference.prototype.put = function (data, metadata) {\r\n        if (metadata === void 0) { metadata = null; }\r\n        validate('put', [uploadDataSpec(), metadataSpec(true)], arguments);\r\n        this.throwIfRoot_('put');\r\n        return new UploadTask(this, this.authWrapper, this.location, this.mappings(), new FbsBlob(data), metadata);\r\n    };\r\n    /**\r\n     * Uploads a string to this object's location.\r\n     * @param string The string to upload.\r\n     * @param opt_format The format of the string to upload.\r\n     * @return An UploadTask that lets you control and\r\n     *     observe the upload.\r\n     */\r\n    Reference.prototype.putString = function (string, format, opt_metadata) {\r\n        if (format === void 0) { format = StringFormat.RAW; }\r\n        validate('putString', [\r\n            stringSpec(),\r\n            stringSpec(formatValidator, true),\r\n            metadataSpec(true)\r\n        ], arguments);\r\n        this.throwIfRoot_('putString');\r\n        var data = dataFromString(format, string);\r\n        var metadata = clone(opt_metadata);\r\n        if (!isDef(metadata['contentType']) && isDef(data.contentType)) {\r\n            metadata['contentType'] = data.contentType;\r\n        }\r\n        return new UploadTask(this, this.authWrapper, this.location, this.mappings(), new FbsBlob(data.data, true), metadata);\r\n    };\r\n    /**\r\n     * Deletes the object at this location.\r\n     * @return A promise that resolves if the deletion succeeds.\r\n     */\r\n    Reference.prototype.delete = function () {\r\n        validate('delete', [], arguments);\r\n        this.throwIfRoot_('delete');\r\n        var self = this;\r\n        return this.authWrapper.getAuthToken().then(function (authToken) {\r\n            var requestInfo = deleteObject(self.authWrapper, self.location);\r\n            return self.authWrapper.makeRequest(requestInfo, authToken).getPromise();\r\n        });\r\n    };\r\n    /**\r\n     *     A promise that resolves with the metadata for this object. If this\r\n     *     object doesn't exist or metadata cannot be retreived, the promise is\r\n     *     rejected.\r\n     */\r\n    Reference.prototype.getMetadata = function () {\r\n        validate('getMetadata', [], arguments);\r\n        this.throwIfRoot_('getMetadata');\r\n        var self = this;\r\n        return this.authWrapper.getAuthToken().then(function (authToken) {\r\n            var requestInfo = getMetadata(self.authWrapper, self.location, self.mappings());\r\n            return self.authWrapper.makeRequest(requestInfo, authToken).getPromise();\r\n        });\r\n    };\r\n    /**\r\n     * Updates the metadata for this object.\r\n     * @param metadata The new metadata for the object.\r\n     *     Only values that have been explicitly set will be changed. Explicitly\r\n     *     setting a value to null will remove the metadata.\r\n     * @return A promise that resolves\r\n     *     with the new metadata for this object.\r\n     *     @see firebaseStorage.Reference.prototype.getMetadata\r\n     */\r\n    Reference.prototype.updateMetadata = function (metadata) {\r\n        validate('updateMetadata', [metadataSpec()], arguments);\r\n        this.throwIfRoot_('updateMetadata');\r\n        var self = this;\r\n        return this.authWrapper.getAuthToken().then(function (authToken) {\r\n            var requestInfo = updateMetadata(self.authWrapper, self.location, metadata, self.mappings());\r\n            return self.authWrapper.makeRequest(requestInfo, authToken).getPromise();\r\n        });\r\n    };\r\n    /**\r\n     * @return A promise that resolves with the download\r\n     *     URL for this object.\r\n     */\r\n    Reference.prototype.getDownloadURL = function () {\r\n        validate('getDownloadURL', [], arguments);\r\n        this.throwIfRoot_('getDownloadURL');\r\n        var self = this;\r\n        return this.authWrapper.getAuthToken().then(function (authToken) {\r\n            var requestInfo = getDownloadUrl(self.authWrapper, self.location, self.mappings());\r\n            return self.authWrapper\r\n                .makeRequest(requestInfo, authToken)\r\n                .getPromise()\r\n                .then(function (url) {\r\n                if (url === null) {\r\n                    throw noDownloadURL();\r\n                }\r\n                return url;\r\n            });\r\n        });\r\n    };\r\n    Reference.prototype.throwIfRoot_ = function (name) {\r\n        if (this.location.path === '') {\r\n            throw invalidRootOperation(name);\r\n        }\r\n    };\r\n    return Reference;\r\n}());\n\n/**\r\n * A request whose promise always fails.\r\n * @struct\r\n * @template T\r\n */\r\nvar FailRequest = /** @class */ (function () {\r\n    function FailRequest(error) {\r\n        this.promise_ = reject(error);\r\n    }\r\n    /** @inheritDoc */\r\n    FailRequest.prototype.getPromise = function () {\r\n        return this.promise_;\r\n    };\r\n    /** @inheritDoc */\r\n    FailRequest.prototype.cancel = function (appDelete) {\r\n        if (appDelete === void 0) { appDelete = false; }\r\n    };\r\n    return FailRequest;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @struct\r\n */\r\nvar RequestMap = /** @class */ (function () {\r\n    function RequestMap() {\r\n        this.map_ = {};\r\n        this.id_ = minSafeInteger;\r\n    }\r\n    /**\r\n     * Registers the given request with this map.\r\n     * The request is unregistered when it completes.\r\n     * @param r The request to register.\r\n     */\r\n    RequestMap.prototype.addRequest = function (r) {\r\n        var id = this.id_;\r\n        this.id_++;\r\n        this.map_[id] = r;\r\n        var self = this;\r\n        function unmap() {\r\n            delete self.map_[id];\r\n        }\r\n        r.getPromise().then(unmap, unmap);\r\n    };\r\n    /**\r\n     * Cancels all registered requests.\r\n     */\r\n    RequestMap.prototype.clear = function () {\r\n        forEach(this.map_, function (key, val) {\r\n            if (val) {\r\n                val.cancel(true);\r\n            }\r\n        });\r\n        this.map_ = {};\r\n    };\r\n    return RequestMap;\r\n}());\n\n/**\r\n * @param app If null, getAuthToken always resolves with null.\r\n * @param service The storage service associated with this auth wrapper.\r\n *     Untyped to avoid circular type dependencies.\r\n * @struct\r\n */\r\nvar AuthWrapper = /** @class */ (function () {\r\n    function AuthWrapper(app, maker, requestMaker, service, pool) {\r\n        this.bucket_ = null;\r\n        this.deleted_ = false;\r\n        this.app_ = app;\r\n        if (this.app_ !== null) {\r\n            var options = this.app_.options;\r\n            if (isDef(options)) {\r\n                this.bucket_ = AuthWrapper.extractBucket_(options);\r\n            }\r\n        }\r\n        this.storageRefMaker_ = maker;\r\n        this.requestMaker_ = requestMaker;\r\n        this.pool_ = pool;\r\n        this.service_ = service;\r\n        this.maxOperationRetryTime_ = defaultMaxOperationRetryTime;\r\n        this.maxUploadRetryTime_ = defaultMaxUploadRetryTime;\r\n        this.requestMap_ = new RequestMap();\r\n    }\r\n    AuthWrapper.extractBucket_ = function (config) {\r\n        var bucketString = config[configOption] || null;\r\n        if (bucketString == null) {\r\n            return null;\r\n        }\r\n        var loc = Location.makeFromBucketSpec(bucketString);\r\n        return loc.bucket;\r\n    };\r\n    AuthWrapper.prototype.getAuthToken = function () {\r\n        // TODO(andysoto): remove ifDef checks after firebase-app implements stubs\r\n        // (b/28673818).\r\n        if (this.app_ !== null &&\r\n            isDef(this.app_.INTERNAL) &&\r\n            isDef(this.app_.INTERNAL.getToken)) {\r\n            return this.app_.INTERNAL.getToken().then(function (response) {\r\n                if (response !== null) {\r\n                    return response.accessToken;\r\n                }\r\n                else {\r\n                    return null;\r\n                }\r\n            }, function (_error) {\r\n                return null;\r\n            });\r\n        }\r\n        else {\r\n            return resolve(null);\r\n        }\r\n    };\r\n    AuthWrapper.prototype.bucket = function () {\r\n        if (this.deleted_) {\r\n            throw appDeleted();\r\n        }\r\n        else {\r\n            return this.bucket_;\r\n        }\r\n    };\r\n    /**\r\n     * The service associated with this auth wrapper. Untyped to avoid circular\r\n     * type dependencies.\r\n     */\r\n    AuthWrapper.prototype.service = function () {\r\n        return this.service_;\r\n    };\r\n    /**\r\n     * Returns a new firebaseStorage.Reference object referencing this AuthWrapper\r\n     * at the given Location.\r\n     * @param loc The Location.\r\n     * @return Actually a firebaseStorage.Reference, typing not allowed\r\n     *     because of circular dependency problems.\r\n     */\r\n    AuthWrapper.prototype.makeStorageReference = function (loc) {\r\n        return this.storageRefMaker_(this, loc);\r\n    };\r\n    AuthWrapper.prototype.makeRequest = function (requestInfo, authToken) {\r\n        if (!this.deleted_) {\r\n            var request = this.requestMaker_(requestInfo, authToken, this.pool_);\r\n            this.requestMap_.addRequest(request);\r\n            return request;\r\n        }\r\n        else {\r\n            return new FailRequest(appDeleted());\r\n        }\r\n    };\r\n    /**\r\n     * Stop running requests and prevent more from being created.\r\n     */\r\n    AuthWrapper.prototype.deleteApp = function () {\r\n        this.deleted_ = true;\r\n        this.app_ = null;\r\n        this.requestMap_.clear();\r\n    };\r\n    AuthWrapper.prototype.maxUploadRetryTime = function () {\r\n        return this.maxUploadRetryTime_;\r\n    };\r\n    AuthWrapper.prototype.setMaxUploadRetryTime = function (time) {\r\n        this.maxUploadRetryTime_ = time;\r\n    };\r\n    AuthWrapper.prototype.maxOperationRetryTime = function () {\r\n        return this.maxOperationRetryTime_;\r\n    };\r\n    AuthWrapper.prototype.setMaxOperationRetryTime = function (time) {\r\n        this.maxOperationRetryTime_ = time;\r\n    };\r\n    return AuthWrapper;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @param f May be invoked\r\n *     before the function returns.\r\n * @param callback Get all the arguments passed to the function\r\n *     passed to f, including the initial boolean.\r\n */\r\nfunction start(f, callback, timeout) {\r\n    // TODO(andysoto): make this code cleaner (probably refactor into an actual\r\n    // type instead of a bunch of functions with state shared in the closure)\r\n    var waitSeconds = 1;\r\n    // Would type this as \"number\" but that doesn't work for Node so ¯\\_(ツ)_/¯\r\n    var timeoutId = null;\r\n    var hitTimeout = false;\r\n    var cancelState = 0;\r\n    function canceled() {\r\n        return cancelState === 2;\r\n    }\r\n    var triggeredCallback = false;\r\n    function triggerCallback() {\r\n        if (!triggeredCallback) {\r\n            triggeredCallback = true;\r\n            callback.apply(null, arguments);\r\n        }\r\n    }\r\n    function callWithDelay(millis) {\r\n        timeoutId = setTimeout(function () {\r\n            timeoutId = null;\r\n            f(handler, canceled());\r\n        }, millis);\r\n    }\r\n    function handler(success) {\r\n        var var_args = [];\r\n        for (var _i = 1; _i < arguments.length; _i++) {\r\n            var_args[_i - 1] = arguments[_i];\r\n        }\r\n        if (triggeredCallback) {\r\n            return;\r\n        }\r\n        if (success) {\r\n            triggerCallback.apply(null, arguments);\r\n            return;\r\n        }\r\n        var mustStop = canceled() || hitTimeout;\r\n        if (mustStop) {\r\n            triggerCallback.apply(null, arguments);\r\n            return;\r\n        }\r\n        if (waitSeconds < 64) {\r\n            /* TODO(andysoto): don't back off so quickly if we know we're offline. */\r\n            waitSeconds *= 2;\r\n        }\r\n        var waitMillis;\r\n        if (cancelState === 1) {\r\n            cancelState = 2;\r\n            waitMillis = 0;\r\n        }\r\n        else {\r\n            waitMillis = (waitSeconds + Math.random()) * 1000;\r\n        }\r\n        callWithDelay(waitMillis);\r\n    }\r\n    var stopped = false;\r\n    function stop(wasTimeout) {\r\n        if (stopped) {\r\n            return;\r\n        }\r\n        stopped = true;\r\n        if (triggeredCallback) {\r\n            return;\r\n        }\r\n        if (timeoutId !== null) {\r\n            if (!wasTimeout) {\r\n                cancelState = 2;\r\n            }\r\n            clearTimeout(timeoutId);\r\n            callWithDelay(0);\r\n        }\r\n        else {\r\n            if (!wasTimeout) {\r\n                cancelState = 1;\r\n            }\r\n        }\r\n    }\r\n    callWithDelay(0);\r\n    setTimeout(function () {\r\n        hitTimeout = true;\r\n        stop(true);\r\n    }, timeout);\r\n    return stop;\r\n}\r\n/**\r\n * Stops the retry loop from repeating.\r\n * If the function is currently \"in between\" retries, it is invoked immediately\r\n * with the second parameter as \"true\". Otherwise, it will be invoked once more\r\n * after the current invocation finishes iff the current invocation would have\r\n * triggered another retry.\r\n */\r\nfunction stop(id) {\r\n    id(false);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @struct\r\n * @template T\r\n */\r\nvar NetworkRequest = /** @class */ (function () {\r\n    function NetworkRequest(url, method, headers, body, successCodes, additionalRetryCodes, callback, errorCallback, timeout, progressCallback, pool) {\r\n        this.pendingXhr_ = null;\r\n        this.backoffId_ = null;\r\n        this.resolve_ = null;\r\n        this.reject_ = null;\r\n        this.canceled_ = false;\r\n        this.appDelete_ = false;\r\n        this.url_ = url;\r\n        this.method_ = method;\r\n        this.headers_ = headers;\r\n        this.body_ = body;\r\n        this.successCodes_ = successCodes.slice();\r\n        this.additionalRetryCodes_ = additionalRetryCodes.slice();\r\n        this.callback_ = callback;\r\n        this.errorCallback_ = errorCallback;\r\n        this.progressCallback_ = progressCallback;\r\n        this.timeout_ = timeout;\r\n        this.pool_ = pool;\r\n        var self = this;\r\n        this.promise_ = make(function (resolve, reject) {\r\n            self.resolve_ = resolve;\r\n            self.reject_ = reject;\r\n            self.start_();\r\n        });\r\n    }\r\n    /**\r\n     * Actually starts the retry loop.\r\n     */\r\n    NetworkRequest.prototype.start_ = function () {\r\n        var self = this;\r\n        function doTheRequest(backoffCallback, canceled) {\r\n            if (canceled) {\r\n                backoffCallback(false, new RequestEndStatus(false, null, true));\r\n                return;\r\n            }\r\n            var xhr = self.pool_.createXhrIo();\r\n            self.pendingXhr_ = xhr;\r\n            function progressListener(progressEvent) {\r\n                var loaded = progressEvent.loaded;\r\n                var total = progressEvent.lengthComputable ? progressEvent.total : -1;\r\n                if (self.progressCallback_ !== null) {\r\n                    self.progressCallback_(loaded, total);\r\n                }\r\n            }\r\n            if (self.progressCallback_ !== null) {\r\n                xhr.addUploadProgressListener(progressListener);\r\n            }\r\n            xhr\r\n                .send(self.url_, self.method_, self.body_, self.headers_)\r\n                .then(function (xhr) {\r\n                if (self.progressCallback_ !== null) {\r\n                    xhr.removeUploadProgressListener(progressListener);\r\n                }\r\n                self.pendingXhr_ = null;\r\n                xhr = xhr;\r\n                var hitServer = xhr.getErrorCode() === ErrorCode.NO_ERROR;\r\n                var status = xhr.getStatus();\r\n                if (!hitServer || self.isRetryStatusCode_(status)) {\r\n                    var wasCanceled = xhr.getErrorCode() === ErrorCode.ABORT;\r\n                    backoffCallback(false, new RequestEndStatus(false, null, wasCanceled));\r\n                    return;\r\n                }\r\n                var successCode = contains$1(self.successCodes_, status);\r\n                backoffCallback(true, new RequestEndStatus(successCode, xhr));\r\n            });\r\n        }\r\n        /**\r\n         * @param requestWentThrough True if the request eventually went\r\n         *     through, false if it hit the retry limit or was canceled.\r\n         */\r\n        function backoffDone(requestWentThrough, status) {\r\n            var resolve = self.resolve_;\r\n            var reject = self.reject_;\r\n            var xhr = status.xhr;\r\n            if (status.wasSuccessCode) {\r\n                try {\r\n                    var result = self.callback_(xhr, xhr.getResponseText());\r\n                    if (isJustDef(result)) {\r\n                        resolve(result);\r\n                    }\r\n                    else {\r\n                        resolve();\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    reject(e);\r\n                }\r\n            }\r\n            else {\r\n                if (xhr !== null) {\r\n                    var err = unknown();\r\n                    err.setServerResponseProp(xhr.getResponseText());\r\n                    if (self.errorCallback_) {\r\n                        reject(self.errorCallback_(xhr, err));\r\n                    }\r\n                    else {\r\n                        reject(err);\r\n                    }\r\n                }\r\n                else {\r\n                    if (status.canceled) {\r\n                        var err = self.appDelete_\r\n                            ? appDeleted()\r\n                            : canceled();\r\n                        reject(err);\r\n                    }\r\n                    else {\r\n                        var err = retryLimitExceeded();\r\n                        reject(err);\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        if (this.canceled_) {\r\n            backoffDone(false, new RequestEndStatus(false, null, true));\r\n        }\r\n        else {\r\n            this.backoffId_ = start(doTheRequest, backoffDone, this.timeout_);\r\n        }\r\n    };\r\n    /** @inheritDoc */\r\n    NetworkRequest.prototype.getPromise = function () {\r\n        return this.promise_;\r\n    };\r\n    /** @inheritDoc */\r\n    NetworkRequest.prototype.cancel = function (appDelete) {\r\n        this.canceled_ = true;\r\n        this.appDelete_ = appDelete || false;\r\n        if (this.backoffId_ !== null) {\r\n            stop(this.backoffId_);\r\n        }\r\n        if (this.pendingXhr_ !== null) {\r\n            this.pendingXhr_.abort();\r\n        }\r\n    };\r\n    NetworkRequest.prototype.isRetryStatusCode_ = function (status) {\r\n        // The codes for which to retry came from this page:\r\n        // https://cloud.google.com/storage/docs/exponential-backoff\r\n        var isFiveHundredCode = status >= 500 && status < 600;\r\n        var extraRetryCodes = [\r\n            // Request Timeout: web server didn't receive full request in time.\r\n            408,\r\n            // Too Many Requests: you're getting rate-limited, basically.\r\n            429\r\n        ];\r\n        var isExtraRetryCode = contains$1(extraRetryCodes, status);\r\n        var isRequestSpecificRetryCode = contains$1(this.additionalRetryCodes_, status);\r\n        return isFiveHundredCode || isExtraRetryCode || isRequestSpecificRetryCode;\r\n    };\r\n    return NetworkRequest;\r\n}());\r\n/**\r\n * A collection of information about the result of a network request.\r\n * @param opt_canceled Defaults to false.\r\n * @struct\r\n */\r\nvar RequestEndStatus = /** @class */ (function () {\r\n    function RequestEndStatus(wasSuccessCode, xhr, opt_canceled) {\r\n        this.wasSuccessCode = wasSuccessCode;\r\n        this.xhr = xhr;\r\n        this.canceled = !!opt_canceled;\r\n    }\r\n    return RequestEndStatus;\r\n}());\r\nfunction addAuthHeader_(headers, authToken) {\r\n    if (authToken !== null && authToken.length > 0) {\r\n        headers['Authorization'] = 'Firebase ' + authToken;\r\n    }\r\n}\r\nfunction addVersionHeader_(headers) {\r\n    var number = typeof firebase !== 'undefined' ? firebase.SDK_VERSION : 'AppManager';\r\n    headers['X-Firebase-Storage-Version'] = 'webjs/' + number;\r\n}\r\n/**\r\n * @template T\r\n */\r\nfunction makeRequest(requestInfo, authToken, pool) {\r\n    var queryPart = makeQueryString(requestInfo.urlParams);\r\n    var url = requestInfo.url + queryPart;\r\n    var headers = clone(requestInfo.headers);\r\n    addAuthHeader_(headers, authToken);\r\n    addVersionHeader_(headers);\r\n    return new NetworkRequest(url, requestInfo.method, headers, requestInfo.body, requestInfo.successCodes, requestInfo.additionalRetryCodes, requestInfo.handler, requestInfo.errorHandler, requestInfo.timeout, requestInfo.progressCallback, pool);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A service that provides firebaseStorage.Reference instances.\r\n * @param opt_url gs:// url to a custom Storage Bucket\r\n *\r\n * @struct\r\n */\r\nvar Service = /** @class */ (function () {\r\n    function Service(app, pool, url) {\r\n        this.bucket_ = null;\r\n        function maker(authWrapper, loc) {\r\n            return new Reference(authWrapper, loc);\r\n        }\r\n        this.authWrapper_ = new AuthWrapper(app, maker, makeRequest, this, pool);\r\n        this.app_ = app;\r\n        if (url != null) {\r\n            this.bucket_ = Location.makeFromBucketSpec(url);\r\n        }\r\n        else {\r\n            var authWrapperBucket = this.authWrapper_.bucket();\r\n            if (authWrapperBucket != null) {\r\n                this.bucket_ = new Location(authWrapperBucket, '');\r\n            }\r\n        }\r\n        this.internals_ = new ServiceInternals(this);\r\n    }\r\n    /**\r\n     * Returns a firebaseStorage.Reference for the given path in the default\r\n     * bucket.\r\n     */\r\n    Service.prototype.ref = function (path) {\r\n        function validator(path) {\r\n            if (/^[A-Za-z]+:\\/\\//.test(path)) {\r\n                throw 'Expected child path but got a URL, use refFromURL instead.';\r\n            }\r\n        }\r\n        validate('ref', [stringSpec(validator, true)], arguments);\r\n        if (this.bucket_ == null) {\r\n            throw new Error('No Storage Bucket defined in Firebase Options.');\r\n        }\r\n        var ref = new Reference(this.authWrapper_, this.bucket_);\r\n        if (path != null) {\r\n            return ref.child(path);\r\n        }\r\n        else {\r\n            return ref;\r\n        }\r\n    };\r\n    /**\r\n     * Returns a firebaseStorage.Reference object for the given absolute URL,\r\n     * which must be a gs:// or http[s]:// URL.\r\n     */\r\n    Service.prototype.refFromURL = function (url) {\r\n        function validator(p) {\r\n            if (!/^[A-Za-z]+:\\/\\//.test(p)) {\r\n                throw 'Expected full URL but got a child path, use ref instead.';\r\n            }\r\n            try {\r\n                Location.makeFromUrl(p);\r\n            }\r\n            catch (e) {\r\n                throw 'Expected valid full URL but got an invalid one.';\r\n            }\r\n        }\r\n        validate('refFromURL', [stringSpec(validator, false)], arguments);\r\n        return new Reference(this.authWrapper_, url);\r\n    };\r\n    Object.defineProperty(Service.prototype, \"maxUploadRetryTime\", {\r\n        get: function () {\r\n            return this.authWrapper_.maxUploadRetryTime();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Service.prototype.setMaxUploadRetryTime = function (time) {\r\n        validate('setMaxUploadRetryTime', [nonNegativeNumberSpec()], arguments);\r\n        this.authWrapper_.setMaxUploadRetryTime(time);\r\n    };\r\n    Object.defineProperty(Service.prototype, \"maxOperationRetryTime\", {\r\n        get: function () {\r\n            return this.authWrapper_.maxOperationRetryTime();\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Service.prototype.setMaxOperationRetryTime = function (time) {\r\n        validate('setMaxOperationRetryTime', [nonNegativeNumberSpec()], arguments);\r\n        this.authWrapper_.setMaxOperationRetryTime(time);\r\n    };\r\n    Object.defineProperty(Service.prototype, \"app\", {\r\n        get: function () {\r\n            return this.app_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Service.prototype, \"INTERNAL\", {\r\n        get: function () {\r\n            return this.internals_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    return Service;\r\n}());\r\n/**\r\n * @struct\r\n */\r\nvar ServiceInternals = /** @class */ (function () {\r\n    function ServiceInternals(service) {\r\n        this.service_ = service;\r\n    }\r\n    /**\r\n     * Called when the associated app is deleted.\r\n     * @see {!fbs.AuthWrapper.prototype.deleteApp}\r\n     */\r\n    ServiceInternals.prototype.delete = function () {\r\n        this.service_.authWrapper_.deleteApp();\r\n        return resolve(undefined);\r\n    };\r\n    return ServiceInternals;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Type constant for Firebase Storage.\r\n */\r\nvar STORAGE_TYPE = 'storage';\r\nfunction factory(app, unused, opt_url) {\r\n    return new Service(app, new XhrIoPool(), opt_url);\r\n}\r\nfunction registerStorage(instance) {\r\n    var namespaceExports = {\r\n        // no-inline\r\n        TaskState: TaskState,\r\n        TaskEvent: TaskEvent,\r\n        StringFormat: StringFormat,\r\n        Storage: Service,\r\n        Reference: Reference\r\n    };\r\n    instance.INTERNAL.registerService(STORAGE_TYPE, factory, namespaceExports, undefined, \r\n    // Allow multiple storage instances per app.\r\n    true);\r\n}\r\nregisterStorage(firebase);\n\nexport { registerStorage };\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/storage/dist/index.esm.js","import firebase from 'firebase/app';\nimport 'firebase/auth';\nimport 'firebase/database';\nimport 'firebase/storage';\n\n/* ---\n\n NOTE #1: in a robust solution, you'd put this in a keystore and have the\nCI/CD process pull in the value\n\nNOTE #2: The firebase project will require the origin IP to be whitelisted.\nIn a robust solution, you'd use a server-side call or a hosted IP so that\nthe IP ranges are stable and predictable.\n\nNOTE #3: This example does not properly secure read/write operations which\nyou'd want to do in an actual production setting.\n\n--- */\n\nconst config = {\n\tapiKey: 'AIzaSyBgIncNGTYW9ggtIuUcfu8F0ZkVtWDWX8g',\n\tauthDomain: 'fir-demo-001.firebaseapp.com',\n\tdatabaseURL: 'https://fir-demo-001.firebaseio.com',\n\tprojectId: 'fir-demo-001',\n\tstorageBucket: 'fir-demo-001.appspot.com',\n\tmessagingSenderId: '524883414163'\n};\n\nif (!firebase.apps.length) {\n\tfirebase.initializeApp(config);\n}\n\nconst auth = firebase.auth();\nconst database = firebase.database();\nconst storage = firebase.storage();\n\nconst googleAuthProvider = new firebase.auth.GoogleAuthProvider();\ngoogleAuthProvider.addScope('email');\ngoogleAuthProvider.setCustomParameters({ prompt: 'select_account' }); //force account selection\n\nexport { firebase, auth, database, storage, googleAuthProvider };\n\n\n// WEBPACK FOOTER //\n// ./firebase/index.js","require('../../modules/es6.string.repeat');\nmodule.exports = require('../../modules/_core').String.repeat;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/fn/string/repeat.js","'use strict';\nmodule.exports = function (str) {\n\treturn encodeURIComponent(str).replace(/[!'()*]/g, function (c) {\n\t\treturn '%' + c.charCodeAt(0).toString(16).toUpperCase();\n\t});\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/strict-uri-encode/index.js","module.exports = function (it) {\n  return typeof it === 'object' ? it !== null : typeof it === 'function';\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_is-object.js","var isObject = require('./_is-object');\nvar isArray = require('./_is-array');\nvar SPECIES = require('./_wks')('species');\n\nmodule.exports = function (original) {\n  var C;\n  if (isArray(original)) {\n    C = original.constructor;\n    // cross-realm fallback\n    if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;\n    if (isObject(C)) {\n      C = C[SPECIES];\n      if (C === null) C = undefined;\n    }\n  } return C === undefined ? Array : C;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_array-species-constructor.js","function _setPrototypeOf(o, p) {\n  module.exports = _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n    o.__proto__ = p;\n    return o;\n  };\n\n  return _setPrototypeOf(o, p);\n}\n\nmodule.exports = _setPrototypeOf;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/setPrototypeOf.js","require('../../modules/es6.array.find');\nmodule.exports = require('../../modules/_core').Array.find;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/fn/array/find.js","var isObject = require('./_is-object');\nmodule.exports = function (it) {\n  if (!isObject(it)) throw TypeError(it + ' is not an object!');\n  return it;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_an-object.js","var $export = require('./_export');\n\n$export($export.P, 'String', {\n  // 21.1.3.13 String.prototype.repeat(count)\n  repeat: require('./_string-repeat')\n});\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.string.repeat.js","module.exports = {};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_iterators.js","'use strict';\nvar LIBRARY = require('./_library');\nvar $export = require('./_export');\nvar redefine = require('./_redefine');\nvar hide = require('./_hide');\nvar Iterators = require('./_iterators');\nvar $iterCreate = require('./_iter-create');\nvar setToStringTag = require('./_set-to-string-tag');\nvar getPrototypeOf = require('./_object-gpo');\nvar ITERATOR = require('./_wks')('iterator');\nvar BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`\nvar FF_ITERATOR = '@@iterator';\nvar KEYS = 'keys';\nvar VALUES = 'values';\n\nvar returnThis = function () { return this; };\n\nmodule.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {\n  $iterCreate(Constructor, NAME, next);\n  var getMethod = function (kind) {\n    if (!BUGGY && kind in proto) return proto[kind];\n    switch (kind) {\n      case KEYS: return function keys() { return new Constructor(this, kind); };\n      case VALUES: return function values() { return new Constructor(this, kind); };\n    } return function entries() { return new Constructor(this, kind); };\n  };\n  var TAG = NAME + ' Iterator';\n  var DEF_VALUES = DEFAULT == VALUES;\n  var VALUES_BUG = false;\n  var proto = Base.prototype;\n  var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];\n  var $default = $native || getMethod(DEFAULT);\n  var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;\n  var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;\n  var methods, key, IteratorPrototype;\n  // Fix native\n  if ($anyNative) {\n    IteratorPrototype = getPrototypeOf($anyNative.call(new Base()));\n    if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {\n      // Set @@toStringTag to native iterators\n      setToStringTag(IteratorPrototype, TAG, true);\n      // fix for some old engines\n      if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') hide(IteratorPrototype, ITERATOR, returnThis);\n    }\n  }\n  // fix Array#{values, @@iterator}.name in V8 / FF\n  if (DEF_VALUES && $native && $native.name !== VALUES) {\n    VALUES_BUG = true;\n    $default = function values() { return $native.call(this); };\n  }\n  // Define iterator\n  if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) {\n    hide(proto, ITERATOR, $default);\n  }\n  // Plug for library\n  Iterators[NAME] = $default;\n  Iterators[TAG] = returnThis;\n  if (DEFAULT) {\n    methods = {\n      values: DEF_VALUES ? $default : getMethod(VALUES),\n      keys: IS_SET ? $default : getMethod(KEYS),\n      entries: $entries\n    };\n    if (FORCED) for (key in methods) {\n      if (!(key in proto)) redefine(proto, key, methods[key]);\n    } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods);\n  }\n  return methods;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_iter-define.js","import { Component, h } from 'preact';\nimport { bindActionCreators } from 'redux';\n\nvar Children = {\n\tonly: function only(children) {\n\t\treturn children && children[0] || null;\n\t}\n};\n\nfunction proptype() {}\nproptype.isRequired = proptype;\n\nvar PropTypes = {\n\telement: proptype,\n\tfunc: proptype,\n\tshape: function shape() {\n\t\treturn proptype;\n\t},\n\tinstanceOf: function instanceOf() {\n\t\treturn proptype;\n\t}\n};\n\nvar subscriptionShape = PropTypes.shape({\n  trySubscribe: PropTypes.func.isRequired,\n  tryUnsubscribe: PropTypes.func.isRequired,\n  notifyNestedSubs: PropTypes.func.isRequired,\n  isSubscribed: PropTypes.func.isRequired\n});\n\nvar storeShape = PropTypes.shape({\n  subscribe: PropTypes.func.isRequired,\n  dispatch: PropTypes.func.isRequired,\n  getState: PropTypes.func.isRequired\n});\n\n/**\n * Prints a warning in the console if it exists.\n *\n * @param {String} message The warning message.\n * @returns {void}\n */\nfunction warning(message) {\n  /* eslint-disable no-console */\n  if (typeof console !== 'undefined' && typeof console.error === 'function') {\n    console.error(message);\n  }\n  /* eslint-enable no-console */\n  try {\n    // This error was thrown as a convenience so that if you enable\n    // \"break on all exceptions\" in your console,\n    // it would pause the execution at this line.\n    throw new Error(message);\n    /* eslint-disable no-empty */\n  } catch (e) {}\n  /* eslint-enable no-empty */\n}\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n  return typeof obj;\n} : function (obj) {\n  return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\n\n\n\n\n\n\n\n\n\n\n\nvar classCallCheck = function (instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n};\n\n\n\n\n\n\n\n\n\nvar _extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];\n\n    for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n\n  return target;\n};\n\n\n\nvar inherits = function (subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n  }\n\n  subClass.prototype = Object.create(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      enumerable: false,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n};\n\n\n\n\n\n\n\n\n\nvar objectWithoutProperties = function (obj, keys) {\n  var target = {};\n\n  for (var i in obj) {\n    if (keys.indexOf(i) >= 0) continue;\n    if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;\n    target[i] = obj[i];\n  }\n\n  return target;\n};\n\nvar possibleConstructorReturn = function (self, call) {\n  if (!self) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n\n  return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n};\n\nvar didWarnAboutReceivingStore = false;\nfunction warnAboutReceivingStore() {\n  if (didWarnAboutReceivingStore) {\n    return;\n  }\n  didWarnAboutReceivingStore = true;\n\n  warning('<Provider> does not support changing `store` on the fly. ' + 'It is most likely that you see this error because you updated to ' + 'Redux 2.x and React Redux 2.x which no longer hot reload reducers ' + 'automatically. See https://github.com/reactjs/react-redux/releases/' + 'tag/v2.0.0 for the migration instructions.');\n}\n\nfunction createProvider() {\n  var _Provider$childContex;\n\n  var storeKey = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'store';\n  var subKey = arguments[1];\n\n  var subscriptionKey = subKey || storeKey + 'Subscription';\n\n  var Provider = function (_Component) {\n    inherits(Provider, _Component);\n\n    Provider.prototype.getChildContext = function getChildContext() {\n      var _ref;\n\n      return _ref = {}, _ref[storeKey] = this[storeKey], _ref[subscriptionKey] = null, _ref;\n    };\n\n    function Provider(props, context) {\n      classCallCheck(this, Provider);\n\n      var _this = possibleConstructorReturn(this, _Component.call(this, props, context));\n\n      _this[storeKey] = props.store;\n      return _this;\n    }\n\n    Provider.prototype.render = function render() {\n      return Children.only(this.props.children);\n    };\n\n    return Provider;\n  }(Component);\n\n  {\n    Provider.prototype.componentWillReceiveProps = function (nextProps) {\n      if (this[storeKey] !== nextProps.store) {\n        warnAboutReceivingStore();\n      }\n    };\n  }\n\n  Provider.childContextTypes = (_Provider$childContex = {}, _Provider$childContex[storeKey] = storeShape.isRequired, _Provider$childContex[subscriptionKey] = subscriptionShape, _Provider$childContex);\n\n  return Provider;\n}\n\nvar Provider = createProvider();\n\n/**\n * Copyright 2015, Yahoo! Inc.\n * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.\n */\nvar REACT_STATICS = {\n    childContextTypes: true,\n    contextTypes: true,\n    defaultProps: true,\n    displayName: true,\n    getDefaultProps: true,\n    mixins: true,\n    propTypes: true,\n    type: true\n};\n\nvar KNOWN_STATICS = {\n    name: true,\n    length: true,\n    prototype: true,\n    caller: true,\n    callee: true,\n    arguments: true,\n    arity: true\n};\n\nvar defineProperty$1 = Object.defineProperty;\nvar getOwnPropertyNames = Object.getOwnPropertyNames;\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar getPrototypeOf = Object.getPrototypeOf;\nvar objectPrototype = getPrototypeOf && getPrototypeOf(Object);\n\nvar hoistNonReactStatics = function hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {\n    if (typeof sourceComponent !== 'string') {\n        // don't hoist over string (html) components\n\n        if (objectPrototype) {\n            var inheritedComponent = getPrototypeOf(sourceComponent);\n            if (inheritedComponent && inheritedComponent !== objectPrototype) {\n                hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);\n            }\n        }\n\n        var keys = getOwnPropertyNames(sourceComponent);\n\n        if (getOwnPropertySymbols) {\n            keys = keys.concat(getOwnPropertySymbols(sourceComponent));\n        }\n\n        for (var i = 0; i < keys.length; ++i) {\n            var key = keys[i];\n            if (!REACT_STATICS[key] && !KNOWN_STATICS[key] && (!blacklist || !blacklist[key])) {\n                var descriptor = getOwnPropertyDescriptor(sourceComponent, key);\n                try {\n                    // Avoid failures from read-only properties\n                    defineProperty$1(targetComponent, key, descriptor);\n                } catch (e) {}\n            }\n        }\n\n        return targetComponent;\n    }\n\n    return targetComponent;\n};\n\nvar invariant = function () {};\n\n// encapsulates the subscription logic for connecting a component to the redux store, as\n// well as nesting subscriptions of descendant components, so that we can ensure the\n// ancestor components re-render before descendants\n\nvar CLEARED = null;\nvar nullListeners = {\n  notify: function notify() {}\n};\n\nfunction createListenerCollection() {\n  // the current/next pattern is copied from redux's createStore code.\n  // TODO: refactor+expose that code to be reusable here?\n  var current = [];\n  var next = [];\n\n  return {\n    clear: function clear() {\n      next = CLEARED;\n      current = CLEARED;\n    },\n    notify: function notify() {\n      var listeners = current = next;\n      for (var i = 0; i < listeners.length; i++) {\n        listeners[i]();\n      }\n    },\n    get: function get$$1() {\n      return next;\n    },\n    subscribe: function subscribe(listener) {\n      var isSubscribed = true;\n      if (next === current) next = current.slice();\n      next.push(listener);\n\n      return function unsubscribe() {\n        if (!isSubscribed || current === CLEARED) return;\n        isSubscribed = false;\n\n        if (next === current) next = current.slice();\n        next.splice(next.indexOf(listener), 1);\n      };\n    }\n  };\n}\n\nvar Subscription = function () {\n  function Subscription(store, parentSub, onStateChange) {\n    classCallCheck(this, Subscription);\n\n    this.store = store;\n    this.parentSub = parentSub;\n    this.onStateChange = onStateChange;\n    this.unsubscribe = null;\n    this.listeners = nullListeners;\n  }\n\n  Subscription.prototype.addNestedSub = function addNestedSub(listener) {\n    this.trySubscribe();\n    return this.listeners.subscribe(listener);\n  };\n\n  Subscription.prototype.notifyNestedSubs = function notifyNestedSubs() {\n    this.listeners.notify();\n  };\n\n  Subscription.prototype.isSubscribed = function isSubscribed() {\n    return Boolean(this.unsubscribe);\n  };\n\n  Subscription.prototype.trySubscribe = function trySubscribe() {\n    if (!this.unsubscribe) {\n      this.unsubscribe = this.parentSub ? this.parentSub.addNestedSub(this.onStateChange) : this.store.subscribe(this.onStateChange);\n\n      this.listeners = createListenerCollection();\n    }\n  };\n\n  Subscription.prototype.tryUnsubscribe = function tryUnsubscribe() {\n    if (this.unsubscribe) {\n      this.unsubscribe();\n      this.unsubscribe = null;\n      this.listeners.clear();\n      this.listeners = nullListeners;\n    }\n  };\n\n  return Subscription;\n}();\n\nvar hotReloadingVersion = 0;\nvar dummyState = {};\nfunction noop() {}\nfunction makeSelectorStateful(sourceSelector, store) {\n  // wrap the selector in an object that tracks its results between runs.\n  var selector = {\n    run: function runComponentSelector(props) {\n      try {\n        var nextProps = sourceSelector(store.getState(), props);\n        if (nextProps !== selector.props || selector.error) {\n          selector.shouldComponentUpdate = true;\n          selector.props = nextProps;\n          selector.error = null;\n        }\n      } catch (error) {\n        selector.shouldComponentUpdate = true;\n        selector.error = error;\n      }\n    }\n  };\n\n  return selector;\n}\n\nfunction connectAdvanced(\n/*\n  selectorFactory is a func that is responsible for returning the selector function used to\n  compute new props from state, props, and dispatch. For example:\n     export default connectAdvanced((dispatch, options) => (state, props) => ({\n      thing: state.things[props.thingId],\n      saveThing: fields => dispatch(actionCreators.saveThing(props.thingId, fields)),\n    }))(YourComponent)\n   Access to dispatch is provided to the factory so selectorFactories can bind actionCreators\n  outside of their selector as an optimization. Options passed to connectAdvanced are passed to\n  the selectorFactory, along with displayName and WrappedComponent, as the second argument.\n   Note that selectorFactory is responsible for all caching/memoization of inbound and outbound\n  props. Do not use connectAdvanced directly without memoizing results between calls to your\n  selector, otherwise the Connect component will re-render on every state or props change.\n*/\nselectorFactory) {\n  var _contextTypes, _childContextTypes;\n\n  var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n  var _ref$getDisplayName = _ref.getDisplayName,\n      getDisplayName = _ref$getDisplayName === undefined ? function (name) {\n    return 'ConnectAdvanced(' + name + ')';\n  } : _ref$getDisplayName,\n      _ref$methodName = _ref.methodName,\n      methodName = _ref$methodName === undefined ? 'connectAdvanced' : _ref$methodName,\n      _ref$renderCountProp = _ref.renderCountProp,\n      renderCountProp = _ref$renderCountProp === undefined ? undefined : _ref$renderCountProp,\n      _ref$shouldHandleStat = _ref.shouldHandleStateChanges,\n      shouldHandleStateChanges = _ref$shouldHandleStat === undefined ? true : _ref$shouldHandleStat,\n      _ref$storeKey = _ref.storeKey,\n      storeKey = _ref$storeKey === undefined ? 'store' : _ref$storeKey,\n      _ref$withRef = _ref.withRef,\n      withRef = _ref$withRef === undefined ? false : _ref$withRef,\n      connectOptions = objectWithoutProperties(_ref, ['getDisplayName', 'methodName', 'renderCountProp', 'shouldHandleStateChanges', 'storeKey', 'withRef']);\n\n  var subscriptionKey = storeKey + 'Subscription';\n  var version = hotReloadingVersion++;\n\n  var contextTypes = (_contextTypes = {}, _contextTypes[storeKey] = storeShape, _contextTypes[subscriptionKey] = subscriptionShape, _contextTypes);\n  var childContextTypes = (_childContextTypes = {}, _childContextTypes[subscriptionKey] = subscriptionShape, _childContextTypes);\n\n  return function wrapWithConnect(WrappedComponent) {\n    invariant(typeof WrappedComponent == 'function', 'You must pass a component to the function returned by ' + ('connect. Instead received ' + JSON.stringify(WrappedComponent)));\n\n    var wrappedComponentName = WrappedComponent.displayName || WrappedComponent.name || 'Component';\n\n    var displayName = getDisplayName(wrappedComponentName);\n\n    var selectorFactoryOptions = _extends({}, connectOptions, {\n      getDisplayName: getDisplayName,\n      methodName: methodName,\n      renderCountProp: renderCountProp,\n      shouldHandleStateChanges: shouldHandleStateChanges,\n      storeKey: storeKey,\n      withRef: withRef,\n      displayName: displayName,\n      wrappedComponentName: wrappedComponentName,\n      WrappedComponent: WrappedComponent\n    });\n\n    var Connect = function (_Component) {\n      inherits(Connect, _Component);\n\n      function Connect(props, context) {\n        classCallCheck(this, Connect);\n\n        var _this = possibleConstructorReturn(this, _Component.call(this, props, context));\n\n        _this.version = version;\n        _this.state = {};\n        _this.renderCount = 0;\n        _this.store = props[storeKey] || context[storeKey];\n        _this.propsMode = Boolean(props[storeKey]);\n        _this.setWrappedInstance = _this.setWrappedInstance.bind(_this);\n\n        invariant(_this.store, 'Could not find \"' + storeKey + '\" in either the context or props of ' + ('\"' + displayName + '\". Either wrap the root component in a <Provider>, ') + ('or explicitly pass \"' + storeKey + '\" as a prop to \"' + displayName + '\".'));\n\n        _this.initSelector();\n        _this.initSubscription();\n        return _this;\n      }\n\n      Connect.prototype.getChildContext = function getChildContext() {\n        var _ref2;\n\n        // If this component received store from props, its subscription should be transparent\n        // to any descendants receiving store+subscription from context; it passes along\n        // subscription passed to it. Otherwise, it shadows the parent subscription, which allows\n        // Connect to control ordering of notifications to flow top-down.\n        var subscription = this.propsMode ? null : this.subscription;\n        return _ref2 = {}, _ref2[subscriptionKey] = subscription || this.context[subscriptionKey], _ref2;\n      };\n\n      Connect.prototype.componentDidMount = function componentDidMount() {\n        if (!shouldHandleStateChanges) return;\n\n        // componentWillMount fires during server side rendering, but componentDidMount and\n        // componentWillUnmount do not. Because of this, trySubscribe happens during ...didMount.\n        // Otherwise, unsubscription would never take place during SSR, causing a memory leak.\n        // To handle the case where a child component may have triggered a state change by\n        // dispatching an action in its componentWillMount, we have to re-run the select and maybe\n        // re-render.\n        this.subscription.trySubscribe();\n        this.selector.run(this.props);\n        if (this.selector.shouldComponentUpdate) this.forceUpdate();\n      };\n\n      Connect.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {\n        this.selector.run(nextProps);\n      };\n\n      Connect.prototype.shouldComponentUpdate = function shouldComponentUpdate() {\n        return this.selector.shouldComponentUpdate;\n      };\n\n      Connect.prototype.componentWillUnmount = function componentWillUnmount() {\n        if (this.subscription) this.subscription.tryUnsubscribe();\n        this.subscription = null;\n        this.notifyNestedSubs = noop;\n        this.store = null;\n        this.selector.run = noop;\n        this.selector.shouldComponentUpdate = false;\n      };\n\n      Connect.prototype.getWrappedInstance = function getWrappedInstance() {\n        invariant(withRef, 'To access the wrapped instance, you need to specify ' + ('{ withRef: true } in the options argument of the ' + methodName + '() call.'));\n        return this.wrappedInstance;\n      };\n\n      Connect.prototype.setWrappedInstance = function setWrappedInstance(ref) {\n        this.wrappedInstance = ref;\n      };\n\n      Connect.prototype.initSelector = function initSelector() {\n        var sourceSelector = selectorFactory(this.store.dispatch, selectorFactoryOptions);\n        this.selector = makeSelectorStateful(sourceSelector, this.store);\n        this.selector.run(this.props);\n      };\n\n      Connect.prototype.initSubscription = function initSubscription() {\n        if (!shouldHandleStateChanges) return;\n\n        // parentSub's source should match where store came from: props vs. context. A component\n        // connected to the store via props shouldn't use subscription from context, or vice versa.\n        var parentSub = (this.propsMode ? this.props : this.context)[subscriptionKey];\n        this.subscription = new Subscription(this.store, parentSub, this.onStateChange.bind(this));\n\n        // `notifyNestedSubs` is duplicated to handle the case where the component is  unmounted in\n        // the middle of the notification loop, where `this.subscription` will then be null. An\n        // extra null check every change can be avoided by copying the method onto `this` and then\n        // replacing it with a no-op on unmount. This can probably be avoided if Subscription's\n        // listeners logic is changed to not call listeners that have been unsubscribed in the\n        // middle of the notification loop.\n        this.notifyNestedSubs = this.subscription.notifyNestedSubs.bind(this.subscription);\n      };\n\n      Connect.prototype.onStateChange = function onStateChange() {\n        this.selector.run(this.props);\n\n        if (!this.selector.shouldComponentUpdate) {\n          this.notifyNestedSubs();\n        } else {\n          this.componentDidUpdate = this.notifyNestedSubsOnComponentDidUpdate;\n          this.setState(dummyState);\n        }\n      };\n\n      Connect.prototype.notifyNestedSubsOnComponentDidUpdate = function notifyNestedSubsOnComponentDidUpdate() {\n        // `componentDidUpdate` is conditionally implemented when `onStateChange` determines it\n        // needs to notify nested subs. Once called, it unimplements itself until further state\n        // changes occur. Doing it this way vs having a permanent `componentDidUpdate` that does\n        // a boolean check every time avoids an extra method call most of the time, resulting\n        // in some perf boost.\n        this.componentDidUpdate = undefined;\n        this.notifyNestedSubs();\n      };\n\n      Connect.prototype.isSubscribed = function isSubscribed() {\n        return Boolean(this.subscription) && this.subscription.isSubscribed();\n      };\n\n      Connect.prototype.addExtraProps = function addExtraProps(props) {\n        if (!withRef && !renderCountProp && !(this.propsMode && this.subscription)) return props;\n        // make a shallow copy so that fields added don't leak to the original selector.\n        // this is especially important for 'ref' since that's a reference back to the component\n        // instance. a singleton memoized selector would then be holding a reference to the\n        // instance, preventing the instance from being garbage collected, and that would be bad\n        var withExtras = _extends({}, props);\n        if (withRef) withExtras.ref = this.setWrappedInstance;\n        if (renderCountProp) withExtras[renderCountProp] = this.renderCount++;\n        if (this.propsMode && this.subscription) withExtras[subscriptionKey] = this.subscription;\n        return withExtras;\n      };\n\n      Connect.prototype.render = function render() {\n        var selector = this.selector;\n        selector.shouldComponentUpdate = false;\n\n        if (selector.error) {\n          throw selector.error;\n        } else {\n          return h(WrappedComponent, this.addExtraProps(selector.props));\n        }\n      };\n\n      return Connect;\n    }(Component);\n\n    Connect.WrappedComponent = WrappedComponent;\n    Connect.displayName = displayName;\n    Connect.childContextTypes = childContextTypes;\n    Connect.contextTypes = contextTypes;\n\n\n    {\n      Connect.prototype.componentWillUpdate = function componentWillUpdate() {\n        var _this2 = this;\n\n        // We are hot reloading!\n        if (this.version !== version) {\n          this.version = version;\n          this.initSelector();\n\n          // If any connected descendants don't hot reload (and resubscribe in the process), their\n          // listeners will be lost when we unsubscribe. Unfortunately, by copying over all\n          // listeners, this does mean that the old versions of connected descendants will still be\n          // notified of state changes; however, their onStateChange function is a no-op so this\n          // isn't a huge deal.\n          var oldListeners = [];\n\n          if (this.subscription) {\n            oldListeners = this.subscription.listeners.get();\n            this.subscription.tryUnsubscribe();\n          }\n          this.initSubscription();\n          if (shouldHandleStateChanges) {\n            this.subscription.trySubscribe();\n            oldListeners.forEach(function (listener) {\n              return _this2.subscription.listeners.subscribe(listener);\n            });\n          }\n        }\n      };\n    }\n\n    return hoistNonReactStatics(Connect, WrappedComponent);\n  };\n}\n\nvar hasOwn = Object.prototype.hasOwnProperty;\n\nfunction is(x, y) {\n  if (x === y) {\n    return x !== 0 || y !== 0 || 1 / x === 1 / y;\n  } else {\n    return x !== x && y !== y;\n  }\n}\n\nfunction shallowEqual(objA, objB) {\n  if (is(objA, objB)) return true;\n\n  if ((typeof objA === 'undefined' ? 'undefined' : _typeof(objA)) !== 'object' || objA === null || (typeof objB === 'undefined' ? 'undefined' : _typeof(objB)) !== 'object' || objB === null) {\n    return false;\n  }\n\n  var keysA = Object.keys(objA);\n  var keysB = Object.keys(objB);\n\n  if (keysA.length !== keysB.length) return false;\n\n  for (var i = 0; i < keysA.length; i++) {\n    if (!hasOwn.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) {\n      return false;\n    }\n  }\n\n  return true;\n}\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = (typeof global === 'undefined' ? 'undefined' : _typeof(global)) == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = (typeof self === 'undefined' ? 'undefined' : _typeof(self)) == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Built-in value references. */\nvar _Symbol = root.Symbol;\n\n/** Used for built-in method references. */\nvar objectProto$1 = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty$1 = objectProto$1.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto$1.toString;\n\n/** Built-in value references. */\nvar symToStringTag$1 = _Symbol ? _Symbol.toStringTag : undefined;\n\n/**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\nfunction getRawTag(value) {\n  var isOwn = hasOwnProperty$1.call(value, symToStringTag$1),\n      tag = value[symToStringTag$1];\n\n  try {\n    value[symToStringTag$1] = undefined;\n    var unmasked = true;\n  } catch (e) {}\n\n  var result = nativeObjectToString.call(value);\n  if (unmasked) {\n    if (isOwn) {\n      value[symToStringTag$1] = tag;\n    } else {\n      delete value[symToStringTag$1];\n    }\n  }\n  return result;\n}\n\n/** Used for built-in method references. */\nvar objectProto$2 = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString$1 = objectProto$2.toString;\n\n/**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\nfunction objectToString(value) {\n  return nativeObjectToString$1.call(value);\n}\n\n/** `Object#toString` result references. */\nvar nullTag = '[object Null]';\nvar undefinedTag = '[object Undefined]';\n\n/** Built-in value references. */\nvar symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;\n\n/**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n    if (value == null) {\n        return value === undefined ? undefinedTag : nullTag;\n    }\n    return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);\n}\n\n/**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\nfunction overArg(func, transform) {\n  return function (arg) {\n    return func(transform(arg));\n  };\n}\n\n/** Built-in value references. */\nvar getPrototype = overArg(Object.getPrototypeOf, Object);\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return value != null && (typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'object';\n}\n\n/** `Object#toString` result references. */\nvar objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar funcProto = Function.prototype;\nvar objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to infer the `Object` constructor. */\nvar objectCtorString = funcToString.call(Object);\n\n/**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\nfunction isPlainObject(value) {\n  if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n    return false;\n  }\n  var proto = getPrototype(value);\n  if (proto === null) {\n    return true;\n  }\n  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n  return typeof Ctor == 'function' && Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString;\n}\n\nfunction verifyPlainObject(value, displayName, methodName) {\n  if (!isPlainObject(value)) {\n    warning(methodName + '() in ' + displayName + ' must return a plain object. Instead received ' + value + '.');\n  }\n}\n\nfunction wrapMapToPropsConstant(getConstant) {\n  return function initConstantSelector(dispatch, options) {\n    var constant = getConstant(dispatch, options);\n\n    function constantSelector() {\n      return constant;\n    }\n    constantSelector.dependsOnOwnProps = false;\n    return constantSelector;\n  };\n}\n\n// dependsOnOwnProps is used by createMapToPropsProxy to determine whether to pass props as args\n// to the mapToProps function being wrapped. It is also used by makePurePropsSelector to determine\n// whether mapToProps needs to be invoked when props have changed.\n// \n// A length of one signals that mapToProps does not depend on props from the parent component.\n// A length of zero is assumed to mean mapToProps is getting args via arguments or ...args and\n// therefore not reporting its length accurately..\nfunction getDependsOnOwnProps(mapToProps) {\n  return mapToProps.dependsOnOwnProps !== null && mapToProps.dependsOnOwnProps !== undefined ? Boolean(mapToProps.dependsOnOwnProps) : mapToProps.length !== 1;\n}\n\n// Used by whenMapStateToPropsIsFunction and whenMapDispatchToPropsIsFunction,\n// this function wraps mapToProps in a proxy function which does several things:\n// \n//  * Detects whether the mapToProps function being called depends on props, which\n//    is used by selectorFactory to decide if it should reinvoke on props changes.\n//    \n//  * On first call, handles mapToProps if returns another function, and treats that\n//    new function as the true mapToProps for subsequent calls.\n//    \n//  * On first call, verifies the first result is a plain object, in order to warn\n//    the developer that their mapToProps function is not returning a valid result.\n//    \nfunction wrapMapToPropsFunc(mapToProps, methodName) {\n  return function initProxySelector(dispatch, _ref) {\n    var displayName = _ref.displayName;\n\n    var proxy = function mapToPropsProxy(stateOrDispatch, ownProps) {\n      return proxy.dependsOnOwnProps ? proxy.mapToProps(stateOrDispatch, ownProps) : proxy.mapToProps(stateOrDispatch);\n    };\n\n    // allow detectFactoryAndVerify to get ownProps\n    proxy.dependsOnOwnProps = true;\n\n    proxy.mapToProps = function detectFactoryAndVerify(stateOrDispatch, ownProps) {\n      proxy.mapToProps = mapToProps;\n      proxy.dependsOnOwnProps = getDependsOnOwnProps(mapToProps);\n      var props = proxy(stateOrDispatch, ownProps);\n\n      if (typeof props === 'function') {\n        proxy.mapToProps = props;\n        proxy.dependsOnOwnProps = getDependsOnOwnProps(props);\n        props = proxy(stateOrDispatch, ownProps);\n      }\n\n      verifyPlainObject(props, displayName, methodName);\n\n      return props;\n    };\n\n    return proxy;\n  };\n}\n\nfunction whenMapDispatchToPropsIsFunction(mapDispatchToProps) {\n  return typeof mapDispatchToProps === 'function' ? wrapMapToPropsFunc(mapDispatchToProps, 'mapDispatchToProps') : undefined;\n}\n\nfunction whenMapDispatchToPropsIsMissing(mapDispatchToProps) {\n  return !mapDispatchToProps ? wrapMapToPropsConstant(function (dispatch) {\n    return { dispatch: dispatch };\n  }) : undefined;\n}\n\nfunction whenMapDispatchToPropsIsObject(mapDispatchToProps) {\n  return mapDispatchToProps && (typeof mapDispatchToProps === 'undefined' ? 'undefined' : _typeof(mapDispatchToProps)) === 'object' ? wrapMapToPropsConstant(function (dispatch) {\n    return bindActionCreators(mapDispatchToProps, dispatch);\n  }) : undefined;\n}\n\nvar defaultMapDispatchToPropsFactories = [whenMapDispatchToPropsIsFunction, whenMapDispatchToPropsIsMissing, whenMapDispatchToPropsIsObject];\n\nfunction whenMapStateToPropsIsFunction(mapStateToProps) {\n  return typeof mapStateToProps === 'function' ? wrapMapToPropsFunc(mapStateToProps, 'mapStateToProps') : undefined;\n}\n\nfunction whenMapStateToPropsIsMissing(mapStateToProps) {\n  return !mapStateToProps ? wrapMapToPropsConstant(function () {\n    return {};\n  }) : undefined;\n}\n\nvar defaultMapStateToPropsFactories = [whenMapStateToPropsIsFunction, whenMapStateToPropsIsMissing];\n\nfunction defaultMergeProps(stateProps, dispatchProps, ownProps) {\n  return _extends({}, ownProps, stateProps, dispatchProps);\n}\n\nfunction wrapMergePropsFunc(mergeProps) {\n  return function initMergePropsProxy(dispatch, _ref) {\n    var displayName = _ref.displayName,\n        pure = _ref.pure,\n        areMergedPropsEqual = _ref.areMergedPropsEqual;\n\n    var hasRunOnce = false;\n    var mergedProps = void 0;\n\n    return function mergePropsProxy(stateProps, dispatchProps, ownProps) {\n      var nextMergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n\n      if (hasRunOnce) {\n        if (!pure || !areMergedPropsEqual(nextMergedProps, mergedProps)) mergedProps = nextMergedProps;\n      } else {\n        hasRunOnce = true;\n        mergedProps = nextMergedProps;\n\n        verifyPlainObject(mergedProps, displayName, 'mergeProps');\n      }\n\n      return mergedProps;\n    };\n  };\n}\n\nfunction whenMergePropsIsFunction(mergeProps) {\n  return typeof mergeProps === 'function' ? wrapMergePropsFunc(mergeProps) : undefined;\n}\n\nfunction whenMergePropsIsOmitted(mergeProps) {\n  return !mergeProps ? function () {\n    return defaultMergeProps;\n  } : undefined;\n}\n\nvar defaultMergePropsFactories = [whenMergePropsIsFunction, whenMergePropsIsOmitted];\n\nfunction verify(selector, methodName, displayName) {\n  if (!selector) {\n    throw new Error('Unexpected value for ' + methodName + ' in ' + displayName + '.');\n  } else if (methodName === 'mapStateToProps' || methodName === 'mapDispatchToProps') {\n    if (!selector.hasOwnProperty('dependsOnOwnProps')) {\n      warning('The selector for ' + methodName + ' of ' + displayName + ' did not specify a value for dependsOnOwnProps.');\n    }\n  }\n}\n\nfunction verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, displayName) {\n  verify(mapStateToProps, 'mapStateToProps', displayName);\n  verify(mapDispatchToProps, 'mapDispatchToProps', displayName);\n  verify(mergeProps, 'mergeProps', displayName);\n}\n\nfunction impureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch) {\n  return function impureFinalPropsSelector(state, ownProps) {\n    return mergeProps(mapStateToProps(state, ownProps), mapDispatchToProps(dispatch, ownProps), ownProps);\n  };\n}\n\nfunction pureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, _ref) {\n  var areStatesEqual = _ref.areStatesEqual,\n      areOwnPropsEqual = _ref.areOwnPropsEqual,\n      areStatePropsEqual = _ref.areStatePropsEqual;\n\n  var hasRunAtLeastOnce = false;\n  var state = void 0;\n  var ownProps = void 0;\n  var stateProps = void 0;\n  var dispatchProps = void 0;\n  var mergedProps = void 0;\n\n  function handleFirstCall(firstState, firstOwnProps) {\n    state = firstState;\n    ownProps = firstOwnProps;\n    stateProps = mapStateToProps(state, ownProps);\n    dispatchProps = mapDispatchToProps(dispatch, ownProps);\n    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n    hasRunAtLeastOnce = true;\n    return mergedProps;\n  }\n\n  function handleNewPropsAndNewState() {\n    stateProps = mapStateToProps(state, ownProps);\n\n    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);\n\n    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n    return mergedProps;\n  }\n\n  function handleNewProps() {\n    if (mapStateToProps.dependsOnOwnProps) stateProps = mapStateToProps(state, ownProps);\n\n    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);\n\n    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n    return mergedProps;\n  }\n\n  function handleNewState() {\n    var nextStateProps = mapStateToProps(state, ownProps);\n    var statePropsChanged = !areStatePropsEqual(nextStateProps, stateProps);\n    stateProps = nextStateProps;\n\n    if (statePropsChanged) mergedProps = mergeProps(stateProps, dispatchProps, ownProps);\n\n    return mergedProps;\n  }\n\n  function handleSubsequentCalls(nextState, nextOwnProps) {\n    var propsChanged = !areOwnPropsEqual(nextOwnProps, ownProps);\n    var stateChanged = !areStatesEqual(nextState, state);\n    state = nextState;\n    ownProps = nextOwnProps;\n\n    if (propsChanged && stateChanged) return handleNewPropsAndNewState();\n    if (propsChanged) return handleNewProps();\n    if (stateChanged) return handleNewState();\n    return mergedProps;\n  }\n\n  return function pureFinalPropsSelector(nextState, nextOwnProps) {\n    return hasRunAtLeastOnce ? handleSubsequentCalls(nextState, nextOwnProps) : handleFirstCall(nextState, nextOwnProps);\n  };\n}\n\n// TODO: Add more comments\n\n// If pure is true, the selector returned by selectorFactory will memoize its results,\n// allowing connectAdvanced's shouldComponentUpdate to return false if final\n// props have not changed. If false, the selector will always return a new\n// object and shouldComponentUpdate will always return true.\n\nfunction finalPropsSelectorFactory(dispatch, _ref2) {\n  var initMapStateToProps = _ref2.initMapStateToProps,\n      initMapDispatchToProps = _ref2.initMapDispatchToProps,\n      initMergeProps = _ref2.initMergeProps,\n      options = objectWithoutProperties(_ref2, ['initMapStateToProps', 'initMapDispatchToProps', 'initMergeProps']);\n\n  var mapStateToProps = initMapStateToProps(dispatch, options);\n  var mapDispatchToProps = initMapDispatchToProps(dispatch, options);\n  var mergeProps = initMergeProps(dispatch, options);\n\n  {\n    verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, options.displayName);\n  }\n\n  var selectorFactory = options.pure ? pureFinalPropsSelectorFactory : impureFinalPropsSelectorFactory;\n\n  return selectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, options);\n}\n\n/*\n  connect is a facade over connectAdvanced. It turns its args into a compatible\n  selectorFactory, which has the signature:\n\n    (dispatch, options) => (nextState, nextOwnProps) => nextFinalProps\n  \n  connect passes its args to connectAdvanced as options, which will in turn pass them to\n  selectorFactory each time a Connect component instance is instantiated or hot reloaded.\n\n  selectorFactory returns a final props selector from its mapStateToProps,\n  mapStateToPropsFactories, mapDispatchToProps, mapDispatchToPropsFactories, mergeProps,\n  mergePropsFactories, and pure args.\n\n  The resulting final props selector is called by the Connect component instance whenever\n  it receives new props or store state.\n */\n\nfunction match(arg, factories, name) {\n  for (var i = factories.length - 1; i >= 0; i--) {\n    var result = factories[i](arg);\n    if (result) return result;\n  }\n\n  return function (dispatch, options) {\n    throw new Error('Invalid value of type ' + (typeof arg === 'undefined' ? 'undefined' : _typeof(arg)) + ' for ' + name + ' argument when connecting component ' + options.wrappedComponentName + '.');\n  };\n}\n\nfunction strictEqual(a, b) {\n  return a === b;\n}\n\n// createConnect with default args builds the 'official' connect behavior. Calling it with\n// different options opens up some testing and extensibility scenarios\nfunction createConnect() {\n  var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},\n      _ref$connectHOC = _ref.connectHOC,\n      connectHOC = _ref$connectHOC === undefined ? connectAdvanced : _ref$connectHOC,\n      _ref$mapStateToPropsF = _ref.mapStateToPropsFactories,\n      mapStateToPropsFactories = _ref$mapStateToPropsF === undefined ? defaultMapStateToPropsFactories : _ref$mapStateToPropsF,\n      _ref$mapDispatchToPro = _ref.mapDispatchToPropsFactories,\n      mapDispatchToPropsFactories = _ref$mapDispatchToPro === undefined ? defaultMapDispatchToPropsFactories : _ref$mapDispatchToPro,\n      _ref$mergePropsFactor = _ref.mergePropsFactories,\n      mergePropsFactories = _ref$mergePropsFactor === undefined ? defaultMergePropsFactories : _ref$mergePropsFactor,\n      _ref$selectorFactory = _ref.selectorFactory,\n      selectorFactory = _ref$selectorFactory === undefined ? finalPropsSelectorFactory : _ref$selectorFactory;\n\n  return function connect(mapStateToProps, mapDispatchToProps, mergeProps) {\n    var _ref2 = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};\n\n    var _ref2$pure = _ref2.pure,\n        pure = _ref2$pure === undefined ? true : _ref2$pure,\n        _ref2$areStatesEqual = _ref2.areStatesEqual,\n        areStatesEqual = _ref2$areStatesEqual === undefined ? strictEqual : _ref2$areStatesEqual,\n        _ref2$areOwnPropsEqua = _ref2.areOwnPropsEqual,\n        areOwnPropsEqual = _ref2$areOwnPropsEqua === undefined ? shallowEqual : _ref2$areOwnPropsEqua,\n        _ref2$areStatePropsEq = _ref2.areStatePropsEqual,\n        areStatePropsEqual = _ref2$areStatePropsEq === undefined ? shallowEqual : _ref2$areStatePropsEq,\n        _ref2$areMergedPropsE = _ref2.areMergedPropsEqual,\n        areMergedPropsEqual = _ref2$areMergedPropsE === undefined ? shallowEqual : _ref2$areMergedPropsE,\n        extraOptions = objectWithoutProperties(_ref2, ['pure', 'areStatesEqual', 'areOwnPropsEqual', 'areStatePropsEqual', 'areMergedPropsEqual']);\n\n    var initMapStateToProps = match(mapStateToProps, mapStateToPropsFactories, 'mapStateToProps');\n    var initMapDispatchToProps = match(mapDispatchToProps, mapDispatchToPropsFactories, 'mapDispatchToProps');\n    var initMergeProps = match(mergeProps, mergePropsFactories, 'mergeProps');\n\n    return connectHOC(selectorFactory, _extends({\n      // used in error messages\n      methodName: 'connect',\n\n      // used to compute Connect's displayName from the wrapped component's displayName.\n      getDisplayName: function getDisplayName(name) {\n        return 'Connect(' + name + ')';\n      },\n\n      // if mapStateToProps is falsy, the Connect component doesn't subscribe to store state changes\n      shouldHandleStateChanges: Boolean(mapStateToProps),\n\n      // passed through to selectorFactory\n      initMapStateToProps: initMapStateToProps,\n      initMapDispatchToProps: initMapDispatchToProps,\n      initMergeProps: initMergeProps,\n      pure: pure,\n      areStatesEqual: areStatesEqual,\n      areOwnPropsEqual: areOwnPropsEqual,\n      areStatePropsEqual: areStatePropsEqual,\n      areMergedPropsEqual: areMergedPropsEqual\n\n    }, extraOptions));\n  };\n}\n\nvar connect = createConnect();\n\nvar index = { Provider: Provider, connect: connect, connectAdvanced: connectAdvanced };\n\nexport { Provider, connect, connectAdvanced };export default index;\n//# sourceMappingURL=preact-redux.esm.js.map\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-redux/dist/preact-redux.esm.js","function _assertThisInitialized(self) {\n  if (self === void 0) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n\n  return self;\n}\n\nmodule.exports = _assertThisInitialized;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/assertThisInitialized.js","import { database, storage } from './';\nimport { SEND_MESSAGE, RECEIVE_MESSAGE, REMOVE_MESSAGE, RECEIVE_QUESTION, REMOVE_QUESTION, SET_AVATAR_STATUS } from './../constants';\nimport store from './../store';\n\nexport const sendMessage = (message) => ({ type: SEND_MESSAGE, message });\nexport const receiveMessage = (message) => ({ type: RECEIVE_MESSAGE, message });\nexport const removeMessage = (message) => ({ type: REMOVE_MESSAGE, message });\nexport const receiveQuestion = (question) => ({ type: RECEIVE_QUESTION, question });\nexport const removeQuestion = (question) => ({ type: REMOVE_QUESTION, question });\n\nfunction getChannelFromStore() {\n\tlet channel = 'main';\n\t\n\ttry {\n\t\tchannel = store.getState().channel.channel;\n\t}\n\tcatch (e) {}\n\n\treturn channel;\n}\n\nexport const sendMessageToFirebase = (message) => {\n\tconst channel = getChannelFromStore();\n\n\tconsole.log('addMessageToFirebase()', channel, message);\n\tdatabase.ref(`chatMessages/${channel}`).push(message);\n};\n\nexport const attachMessageListeners = (dispatch) => {\n\tconst channel = getChannelFromStore();\n\t\n\tconst dbRef = database.ref(`chatMessages/${channel}`).orderByKey().limitToLast(100);\n\n\tunattachMessageListeners(channel); //in case it is already attached\n\n\tdbRef\n\t\t.on('child_added', (snap) => {\n\t\t\tdispatch(receiveMessage(snap.val())); //fire redux RECEIVE action\n\t\t});\n\n\tdbRef\n\t\t.on('child_removed', (snap) => {\n\t\t\tdispatch(removeMessage(snap.val())); //fire redux REMOVE action\n\t\t});\n};\n\nexport const unattachMessageListeners = (channel) => {\n\tconst dbRef = database.ref(`chatMessages/${channel}`);\n\tdbRef.off('child_added');\n\tdbRef.off('child_removed');\n};\n\nexport const publishQuestionToFirebase = (question) => {\n\tconst channel = getChannelFromStore();\n\n\tdatabase.ref(`questions/${channel}`).push(question);\n};\n\nexport const attachQuestionListeners = (dispatch) => {\n\tconst channel = getChannelFromStore();\n\t\n\tconst dbRef = database.ref(`questions/${channel}`).orderByKey().limitToLast(100);\n\n\tdbRef\n\t\t.on('child_added', (snap) => {\n\t\t\tdispatch(receiveQuestion(snap.val())); //fire redux RECEIVE action\n\t\t});\n\n\tdbRef\n\t\t.on('child_removed', (snap) => {\n\t\t\tdispatch(removeQuestion(snap.val())); //fire redux REMOVE action\n\t\t});\n};\n\nexport const unattachQuestionListeners = (channel) => {\n\tconst dbRef = database.ref(`questions/${channel}`);\n\tdbRef.off('child_added');\n\tdbRef.off('child_removed');\n};\n\nexport const saveAvatarToFirebase = (dispatch, file) => {\n\tconst metadata = {\n\t\tcontentType: 'image/jpeg'\n\t};\n\n\tconst ext = file.name.substr(file.name.length - 3).toLowerCase();\n\tif (['jpg', 'gif', 'png'].indexOf(ext) < 0) {\n\t\tconst payload = { status: 'error', description: 'invalid file type' };\n\t\tdispatch({ type: SET_AVATAR_STATUS, payload });\n\t\treturn false;\n\t}\n\n\tconst payload = { status: 'waiting', description: null };\n\tdispatch({ type: SET_AVATAR_STATUS, payload });\n\n\tconst currentUser = store.getState().authentication.user;\n\n\tlet uploadTask = storage.ref().child(`images/${currentUser.uid}/avatar.jpg`).put(file, metadata);\n\n\tuploadTask.on('state_changed',\n\t\t(snapshot) => {\n\t\t\tlet progress = (snapshot.bytesTransferred / snapshot.totalBytes) * 100;\n\t\t\tconsole.log(`Upload is ${progress}% done`);\n\t\t\tswitch (snapshot.state) {\n\t\t\t\tcase 'paused':\n\t\t\t\t\tconsole.log('Upload is paused');\n\t\t\t\t\tbreak;\n\t\t\t\tcase 'running':\n\t\t\t\t\tconsole.log('Upload is running');\n\t\t\t\t\tbreak;\n\t\t\t}\n\t\t},\n\t\t(error) => {\n\t\t\tconsole.log('an error occurred');\n\t\t\tconst payload = { status: 'error', description: error.code };\n\t\t\tdispatch({ type: SET_AVATAR_STATUS, payload });\n\t\t},\n\t\t() => {\n\t\t\tuploadTask.snapshot.ref.getDownloadURL().then(\n\t\t\t\t(downloadURL) => {\n\t\t\t\t\tconsole.log('File is available at', downloadURL);\n\n\t\t\t\t\tcurrentUser.updateProfile({\n\t\t\t\t\t\tphotoURL: downloadURL\n\t\t\t\t\t}).then(() => {\n\t\t\t\t\t\t// Update successful.\n\t\t\t\t\t\tconst payload = { status: null, description: null };\n\t\t\t\t\t\tdispatch({ type: SET_AVATAR_STATUS, payload });\n\t\t\t\t\t}).catch((error) => {\n\t\t\t\t\t\t// An error happened.\n\t\t\t\t\t\tconst payload = { status: error, description: 'unknown error' };\n\t\t\t\t\t\tdispatch({ type: SET_AVATAR_STATUS, payload });\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t);\n\t\t}\n\t);\n};\n\n\n// WEBPACK FOOTER //\n// ./firebase/db.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCFoundation from './foundation';\n\n/**\n * @template F\n */\nclass MDCComponent {\n  /**\n   * @param {!Element} root\n   * @return {!MDCComponent}\n   */\n  static attachTo(root) {\n    // Subclasses which extend MDCBase should provide an attachTo() method that takes a root element and\n    // returns an instantiated component with its root set to that element. Also note that in the cases of\n    // subclasses, an explicit foundation class will not have to be passed in; it will simply be initialized\n    // from getDefaultFoundation().\n    return new MDCComponent(root, new MDCFoundation());\n  }\n\n  /**\n   * @param {!Element} root\n   * @param {F=} foundation\n   * @param {...?} args\n   */\n  constructor(root, foundation = undefined, ...args) {\n    /** @protected {!Element} */\n    this.root_ = root;\n    this.initialize(...args);\n    // Note that we initialize foundation here and not within the constructor's default param so that\n    // this.root_ is defined and can be used within the foundation class.\n    /** @protected {!F} */\n    this.foundation_ = foundation === undefined ? this.getDefaultFoundation() : foundation;\n    this.foundation_.init();\n    this.initialSyncWithDOM();\n  }\n\n  initialize(/* ...args */) {\n    // Subclasses can override this to do any additional setup work that would be considered part of a\n    // \"constructor\". Essentially, it is a hook into the parent constructor before the foundation is\n    // initialized. Any additional arguments besides root and foundation will be passed in here.\n  }\n\n  /**\n   * @return {!F} foundation\n   */\n  getDefaultFoundation() {\n    // Subclasses must override this method to return a properly configured foundation class for the\n    // component.\n    throw new Error('Subclasses must override getDefaultFoundation to return a properly configured ' +\n      'foundation class');\n  }\n\n  initialSyncWithDOM() {\n    // Subclasses should override this method if they need to perform work to synchronize with a host DOM\n    // object. An example of this would be a form control wrapper that needs to synchronize its internal state\n    // to some property or attribute of the host DOM. Please note: this is *not* the place to perform DOM\n    // reads/writes that would cause layout / paint, as this is called synchronously from within the constructor.\n  }\n\n  destroy() {\n    // Subclasses may implement this method to release any resources / deregister any listeners they have\n    // attached. An example of this might be deregistering a resize event from the window object.\n    this.foundation_.destroy();\n  }\n\n  /**\n   * Wrapper method to add an event listener to the component's root element. This is most useful when\n   * listening for custom events.\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n  listen(evtType, handler) {\n    this.root_.addEventListener(evtType, handler);\n  }\n\n  /**\n   * Wrapper method to remove an event listener to the component's root element. This is most useful when\n   * unlistening for custom events.\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n  unlisten(evtType, handler) {\n    this.root_.removeEventListener(evtType, handler);\n  }\n\n  /**\n   * Fires a cross-browser-compatible custom event from the component root of the given type,\n   * with the given data.\n   * @param {string} evtType\n   * @param {!Object} evtData\n   * @param {boolean=} shouldBubble\n   */\n  emit(evtType, evtData, shouldBubble = false) {\n    let evt;\n    if (typeof CustomEvent === 'function') {\n      evt = new CustomEvent(evtType, {\n        detail: evtData,\n        bubbles: shouldBubble,\n      });\n    } else {\n      evt = document.createEvent('CustomEvent');\n      evt.initCustomEvent(evtType, shouldBubble, false, evtData);\n    }\n\n    this.root_.dispatchEvent(evt);\n  }\n}\n\nexport default MDCComponent;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/base/component.js","import firebase from 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firebase&&firebase.INTERNAL&&firebase.INTERNAL.registerService){var a={Auth:bm,Error:L};Z(a,\"EmailAuthProvider\",O,[]);Z(a,\"FacebookAuthProvider\",Zf,[]);Z(a,\"GithubAuthProvider\",ag,[]);Z(a,\"GoogleAuthProvider\",cg,[]);Z(a,\"TwitterAuthProvider\",eg,[]);Z(a,\"OAuthProvider\",N,[V(\"providerId\")]);Z(a,\"SAMLAuthProvider\",Yf,[V(\"providerId\")]);Z(a,\"PhoneAuthProvider\",rg,[Tm()]);Z(a,\"RecaptchaVerifier\",Mm,[X(V(),Sm(),\"recaptchaContainer\"),W(\"recaptchaParameters\",!0),Um()]);\nfirebase.INTERNAL.registerService(\"auth\",function(a,c){a=new bm(a);c({INTERNAL:{getUid:r(a.getUid,a),getToken:r(a.cc,a),addAuthTokenListener:r(a.Vb,a),removeAuthTokenListener:r(a.Cc,a)}});return a},a,function(a,c){if(\"create\"===a)try{c.auth()}catch(d){}});firebase.INTERNAL.extendNamespace({User:Q})}else throw Error(\"Cannot find the firebase namespace; be sure to include firebase-app.js before this library.\");})();}).apply(typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : typeof window !== 'undefined' ? window : {});\n\n//# sourceMappingURL=auth.esm.js.map\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/auth/dist/auth.esm.js","// 19.1.3.1 Object.assign(target, source)\nvar $export = require('./_export');\n\n$export($export.S + $export.F, 'Object', { assign: require('./_object-assign') });\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.object.assign.js","// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])\nvar anObject = require('./_an-object');\nvar dPs = require('./_object-dps');\nvar enumBugKeys = require('./_enum-bug-keys');\nvar IE_PROTO = require('./_shared-key')('IE_PROTO');\nvar Empty = function () { /* empty */ };\nvar PROTOTYPE = 'prototype';\n\n// Create object with fake `null` prototype: use iframe Object with cleared prototype\nvar createDict = function () {\n  // Thrash, waste and sodomy: IE GC bug\n  var iframe = require('./_dom-create')('iframe');\n  var i = enumBugKeys.length;\n  var lt = '<';\n  var gt = '>';\n  var iframeDocument;\n  iframe.style.display = 'none';\n  require('./_html').appendChild(iframe);\n  iframe.src = 'javascript:'; // eslint-disable-line no-script-url\n  // createDict = iframe.contentWindow.Object;\n  // html.removeChild(iframe);\n  iframeDocument = iframe.contentWindow.document;\n  iframeDocument.open();\n  iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt);\n  iframeDocument.close();\n  createDict = iframeDocument.F;\n  while (i--) delete createDict[PROTOTYPE][enumBugKeys[i]];\n  return createDict();\n};\n\nmodule.exports = Object.create || function create(O, Properties) {\n  var result;\n  if (O !== null) {\n    Empty[PROTOTYPE] = anObject(O);\n    result = new Empty();\n    Empty[PROTOTYPE] = null;\n    // add \"__proto__\" for Object.getPrototypeOf polyfill\n    result[IE_PROTO] = O;\n  } else result = createDict();\n  return Properties === undefined ? result : dPs(result, Properties);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-create.js","var global = require('./_global');\nvar hide = require('./_hide');\nvar has = require('./_has');\nvar SRC = require('./_uid')('src');\nvar TO_STRING = 'toString';\nvar $toString = Function[TO_STRING];\nvar TPL = ('' + $toString).split(TO_STRING);\n\nrequire('./_core').inspectSource = function (it) {\n  return $toString.call(it);\n};\n\n(module.exports = function (O, key, val, safe) {\n  var isFunction = typeof val == 'function';\n  if (isFunction) has(val, 'name') || hide(val, 'name', key);\n  if (O[key] === val) return;\n  if (isFunction) has(val, SRC) || hide(val, SRC, O[key] ? '' + O[key] : TPL.join(String(key)));\n  if (O === global) {\n    O[key] = val;\n  } else if (!safe) {\n    delete O[key];\n    hide(O, key, val);\n  } else if (O[key]) {\n    O[key] = val;\n  } else {\n    hide(O, key, val);\n  }\n// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative\n})(Function.prototype, TO_STRING, function toString() {\n  return typeof this == 'function' && this[SRC] || $toString.call(this);\n});\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_redefine.js","require('./_wks-define')('observable');\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es7.symbol.observable.js","/*\nobject-assign\n(c) Sindre Sorhus\n@license MIT\n*/\n\n'use strict';\n/* eslint-disable no-unused-vars */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nvar propIsEnumerable = Object.prototype.propertyIsEnumerable;\n\nfunction toObject(val) {\n\tif (val === null || val === undefined) {\n\t\tthrow new TypeError('Object.assign cannot be called with null or undefined');\n\t}\n\n\treturn Object(val);\n}\n\nfunction shouldUseNative() {\n\ttry {\n\t\tif (!Object.assign) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Detect buggy property enumeration order in older V8 versions.\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=4118\n\t\tvar test1 = new String('abc');  // eslint-disable-line no-new-wrappers\n\t\ttest1[5] = 'de';\n\t\tif (Object.getOwnPropertyNames(test1)[0] === '5') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test2 = {};\n\t\tfor (var i = 0; i < 10; i++) {\n\t\t\ttest2['_' + String.fromCharCode(i)] = i;\n\t\t}\n\t\tvar order2 = Object.getOwnPropertyNames(test2).map(function (n) {\n\t\t\treturn test2[n];\n\t\t});\n\t\tif (order2.join('') !== '0123456789') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test3 = {};\n\t\t'abcdefghijklmnopqrst'.split('').forEach(function (letter) {\n\t\t\ttest3[letter] = letter;\n\t\t});\n\t\tif (Object.keys(Object.assign({}, test3)).join('') !==\n\t\t\t\t'abcdefghijklmnopqrst') {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t} catch (err) {\n\t\t// We don't expect any of the above to throw, but better to be safe.\n\t\treturn false;\n\t}\n}\n\nmodule.exports = shouldUseNative() ? Object.assign : function (target, source) {\n\tvar from;\n\tvar to = toObject(target);\n\tvar symbols;\n\n\tfor (var s = 1; s < arguments.length; s++) {\n\t\tfrom = Object(arguments[s]);\n\n\t\tfor (var key in from) {\n\t\t\tif (hasOwnProperty.call(from, key)) {\n\t\t\t\tto[key] = from[key];\n\t\t\t}\n\t\t}\n\n\t\tif (getOwnPropertySymbols) {\n\t\t\tsymbols = getOwnPropertySymbols(from);\n\t\t\tfor (var i = 0; i < symbols.length; i++) {\n\t\t\t\tif (propIsEnumerable.call(from, symbols[i])) {\n\t\t\t\t\tto[symbols[i]] = from[symbols[i]];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn to;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/object-assign/index.js","var getPrototypeOf = require(\"./getPrototypeOf\");\n\nvar superPropBase = require(\"./superPropBase\");\n\nfunction _get(target, property, receiver) {\n  if (typeof Reflect !== \"undefined\" && Reflect.get) {\n    module.exports = _get = Reflect.get;\n  } else {\n    module.exports = _get = function _get(target, property, receiver) {\n      var base = superPropBase(target, property);\n      if (!base) return;\n      var desc = Object.getOwnPropertyDescriptor(base, property);\n\n      if (desc.get) {\n        return desc.get.call(receiver);\n      }\n\n      return desc.value;\n    };\n  }\n\n  return _get(target, property, receiver || target);\n}\n\nmodule.exports = _get;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/get.js","export default function symbolObservablePonyfill(root) {\n\tvar result;\n\tvar Symbol = root.Symbol;\n\n\tif (typeof Symbol === 'function') {\n\t\tif (Symbol.observable) {\n\t\t\tresult = Symbol.observable;\n\t\t} else {\n\t\t\tresult = Symbol('observable');\n\t\t\tSymbol.observable = result;\n\t\t}\n\t} else {\n\t\tresult = '@@observable';\n\t}\n\n\treturn result;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/symbol-observable/es/ponyfill.js","import { auth, database, googleAuthProvider } from './../firebase';\n\nimport {\n\tLOGIN_START,\n\tLOGIN_SUCCESS,\n\tLOGIN_FAILURE,\n\tLOGOUT,\n\tSET_AUTH_USER\n} from './../constants';\n\nexport function setAuthUserAction() {\n\treturn (dispatch) => {\n\t\tconst user = auth.currentUser;\n\t\tconst userDataRef = auth.currentUser ? database.ref('users/' + user.uid): null;\n\t\tdispatch({ type: SET_AUTH_USER, user, userDataRef });\n\t};\n}\n\nexport function loginAction() {\n\treturn (dispatch) => {\n\t\tdispatch({ type: LOGIN_START });\n\n\t\tauth.signInWithPopup(googleAuthProvider)\n\t\t\t.then(() => {\n\t\t\t\tconst user = auth.currentUser;\n\t\t\t\tconst userDataRef = database.ref('users/' + user.uid);\n\t\t\t\tdispatch({ type: LOGIN_SUCCESS, user, userDataRef });\n\t\t\t})\n\t\t\t.catch(() => {\n\t\t\t\tdispatch({ type: LOGIN_FAILURE });\n\t\t\t});\n\t};\n}\n\nexport function logoutAction() {\n\treturn (dispatch) => {\n\t\tauth.signOut()\n\t\t\t.then(() => {\n\t\t\t\tdispatch({ type: LOGOUT });\n\t\t\t});\n\t};\n}\n\n\n// WEBPACK FOOTER //\n// ./actions/index.js","\n\t\timport Async from 'preact-cli/async-component';\n\n\t\tfunction load(cb) {\n\t\t\trequire.ensure([], function (require) {\n\t\t\t\tcb( require(\"!!../../../../../../../.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/node_modules/babel-loader/lib/index.js??ref--0!./index.js\") );\n\t\t\t}, \"route-home\");\n\t\t}\n\n\t\texport default Async(load);\n\t\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./routes/home/index.js\n// module id = null\n// module chunks = ","\n\t\timport Async from 'preact-cli/async-component';\n\n\t\tfunction load(cb) {\n\t\t\trequire.ensure([], function (require) {\n\t\t\t\tcb( require(\"!!../../../../../../../.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/node_modules/babel-loader/lib/index.js??ref--0!./index.js\") );\n\t\t\t}, \"route-profile\");\n\t\t}\n\n\t\texport default Async(load);\n\t\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./routes/profile/index.js\n// module id = null\n// module chunks = ","\n\t\timport Async from 'preact-cli/async-component';\n\n\t\tfunction load(cb) {\n\t\t\trequire.ensure([], function (require) {\n\t\t\t\tcb( require(\"!!../../../../../../../.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/node_modules/babel-loader/lib/index.js??ref--0!./index.js\") );\n\t\t\t}, \"route-chat\");\n\t\t}\n\n\t\texport default Async(load);\n\t\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./routes/chat/index.js\n// module id = null\n// module chunks = ","\n\t\timport Async from 'preact-cli/async-component';\n\n\t\tfunction load(cb) {\n\t\t\trequire.ensure([], function (require) {\n\t\t\t\tcb( require(\"!!../../../../../../../.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/node_modules/babel-loader/lib/index.js??ref--0!./index.js\") );\n\t\t\t}, \"route-questions\");\n\t\t}\n\n\t\texport default Async(load);\n\t\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./routes/questions/index.js\n// module id = null\n// module chunks = ","\n\t\timport Async from 'preact-cli/async-component';\n\n\t\tfunction load(cb) {\n\t\t\trequire.ensure([], function (require) {\n\t\t\t\tcb( require(\"!!../../../../../../../.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/node_modules/babel-loader/lib/index.js??ref--0!./index.js\") );\n\t\t\t}, \"route-presentations\");\n\t\t}\n\n\t\texport default Async(load);\n\t\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./routes/presentations/index.js\n// module id = null\n// module chunks = ","\n\t\timport Async from 'preact-cli/async-component';\n\n\t\tfunction load(cb) {\n\t\t\trequire.ensure([], function (require) {\n\t\t\t\tcb( require(\"!!../../../../../../../.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/node_modules/babel-loader/lib/index.js??ref--0!./index.js\") );\n\t\t\t}, \"route-map\");\n\t\t}\n\n\t\texport default Async(load);\n\t\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./routes/map/index.js\n// module id = null\n// module chunks = ","\n\t\timport Async from 'preact-cli/async-component';\n\n\t\tfunction load(cb) {\n\t\t\trequire.ensure([], function (require) {\n\t\t\t\tcb( require(\"!!../../../../../../../.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/node_modules/babel-loader/lib/index.js??ref--0!./index.js\") );\n\t\t\t}, \"route-404\");\n\t\t}\n\n\t\texport default Async(load);\n\t\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./routes/404/index.js\n// module id = null\n// module chunks = ","function isAbsolute(pathname) {\n  return pathname.charAt(0) === '/';\n}\n\n// About 1.5x faster than the two-arg version of Array#splice()\nfunction spliceOne(list, index) {\n  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) {\n    list[i] = list[k];\n  }\n\n  list.pop();\n}\n\n// This implementation is based heavily on node's url.parse\nfunction resolvePathname(to) {\n  var from = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n\n  var toParts = to && to.split('/') || [];\n  var fromParts = from && from.split('/') || [];\n\n  var isToAbs = to && isAbsolute(to);\n  var isFromAbs = from && isAbsolute(from);\n  var mustEndAbs = isToAbs || isFromAbs;\n\n  if (to && isAbsolute(to)) {\n    // to is absolute\n    fromParts = toParts;\n  } else if (toParts.length) {\n    // to is relative, drop the filename\n    fromParts.pop();\n    fromParts = fromParts.concat(toParts);\n  }\n\n  if (!fromParts.length) return '/';\n\n  var hasTrailingSlash = void 0;\n  if (fromParts.length) {\n    var last = fromParts[fromParts.length - 1];\n    hasTrailingSlash = last === '.' || last === '..' || last === '';\n  } else {\n    hasTrailingSlash = false;\n  }\n\n  var up = 0;\n  for (var i = fromParts.length; i >= 0; i--) {\n    var part = fromParts[i];\n\n    if (part === '.') {\n      spliceOne(fromParts, i);\n    } else if (part === '..') {\n      spliceOne(fromParts, i);\n      up++;\n    } else if (up) {\n      spliceOne(fromParts, i);\n      up--;\n    }\n  }\n\n  if (!mustEndAbs) for (; up--; up) {\n    fromParts.unshift('..');\n  }if (mustEndAbs && fromParts[0] !== '' && (!fromParts[0] || !isAbsolute(fromParts[0]))) fromParts.unshift('');\n\n  var result = fromParts.join('/');\n\n  if (hasTrailingSlash && result.substr(-1) !== '/') result += '/';\n\n  return result;\n}\n\nexport default resolvePathname;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/resolve-pathname/index.js","var _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nfunction valueEqual(a, b) {\n  if (a === b) return true;\n\n  if (a == null || b == null) return false;\n\n  if (Array.isArray(a)) {\n    return Array.isArray(b) && a.length === b.length && a.every(function (item, index) {\n      return valueEqual(item, b[index]);\n    });\n  }\n\n  var aType = typeof a === 'undefined' ? 'undefined' : _typeof(a);\n  var bType = typeof b === 'undefined' ? 'undefined' : _typeof(b);\n\n  if (aType !== bType) return false;\n\n  if (aType === 'object') {\n    var aValue = a.valueOf();\n    var bValue = b.valueOf();\n\n    if (aValue !== a || bValue !== b) return valueEqual(aValue, bValue);\n\n    var aKeys = Object.keys(a);\n    var bKeys = Object.keys(b);\n\n    if (aKeys.length !== bKeys.length) return false;\n\n    return aKeys.every(function (key) {\n      return valueEqual(a[key], b[key]);\n    });\n  }\n\n  return false;\n}\n\nexport default valueEqual;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/value-equal/index.js","import { h, Component } from 'preact';\nimport { route } from 'preact-router';\nimport { Link } from 'preact-router/match';\n//import Toolbar from 'preact-material-components/Toolbar';\nimport TopAppBar from 'preact-material-components/TopAppBar';\n//import Drawer from 'preact-material-components/Drawer';\n//import List from 'preact-material-components/List';\nimport Dialog from 'preact-material-components/Dialog';\nimport Switch from 'preact-material-components/Switch';\nimport 'preact-material-components/Switch/style.css';\nimport 'preact-material-components/Dialog/style.css';\nimport 'preact-material-components/Drawer/style.css';\nimport 'preact-material-components/List/style.css';\n//import 'preact-material-components/Toolbar/style.css';\nimport 'preact-material-components/TopAppBar/style.css';\nimport classNames from 'classNames/bind';\nimport { connect } from 'preact-redux';\nimport { loginAction, logoutAction } from '../../actions';\nimport style from './style';\nimport './../../style/index.css';\n\nconst mapStateToProps = state => ({\n\tauth_store: state.authentication,\n\troute_store: state.currentRoute\n});\n\nconst mapDispatchToProps = dispatch => ({\n\tlogout: () => {\n\t\tdispatch(logoutAction());\n\t},\n\n\tlogin: () => {\n\t\tdispatch(loginAction());\n\t}\n});\n\nclass HeaderContent extends Component {\n\tlogin = () => {\n\t\tthis.props.login();\n\t}\n\n\tlogout = () => {\n\t\tthis.props.logout();\n\t}\n\n\tcloseDrawer() {\n\t\tthis.drawer.MDComponent.open = false;\n\t\tthis.state = {\n\t\t\tdarkThemeEnabled: false\n\t\t};\n\t}\n\n\topenDrawer = () => (this.drawer.MDComponent.open = true);\n\n\topenSettings = () => this.dialog.MDComponent.show();\n\n\tdrawerRef = drawer => (this.drawer = drawer);\n\tdialogRef = dialog => (this.dialog = dialog);\n\n\tlinkTo = path => () => {\n\t\troute(path);\n\t\tthis.closeDrawer();\n\t};\n\n\tgoHome = this.linkTo('/');\n\tgoToMyProfile = this.linkTo('/profile');\n\tgoToChat = this.linkTo('/chat');\n\tgoToQuestions = this.linkTo('/questions');\n\tgoToPresentations = this.linkTo('/presentations');\n\t\n\n\ttoggleDarkTheme = () => {\n\t\tthis.setState(\n\t\t\t{\n\t\t\t\tdarkThemeEnabled: !this.state.darkThemeEnabled\n\t\t\t},\n\t\t\t() => {\n\t\t\t\tif (this.state.darkThemeEnabled) {\n\t\t\t\t\tdocument.body.classList.add('mdc-theme--dark');\n\t\t\t\t}\n\t\t\t\telse {\n\t\t\t\t\tdocument.body.classList.remove('mdc-theme--dark');\n\t\t\t\t}\n\t\t\t}\n\t\t);\n\t}\n\n\tcheckImage(url, good, bad) {\n\t\tconst img = new Image();\n\t\timg.onload = good;\n\t\timg.onerror = bad;\n\t\timg.src = url;\n\t}\n\n\tcheckForAvatar() {\n\t\tconst currentUser = this.props.auth_store.user;\n\n\t\tif (currentUser && currentUser.photoURL) {\n\t\t\tthis.checkImage(\n\t\t\t\tcurrentUser.photoURL,\n\t\t\t\t() => {\n\t\t\t\t\tthis.setState({ avatarURL: currentUser.photoURL });\n\t\t\t\t},\n\t\t\t\t() => {\n\t\t\t\t\tthis.setState({ avatarURL: './../assets/images/placeholder.png' });\n\t\t\t\t}\n\t\t\t);\n\t\t}\n\t}\n\n\tconstructor(props) {\n\t\tsuper(props);\n\n\t\tthis.state = {\n\t\t\troute: this.props.route,\n\t\t\tavatarURL: './../assets/images/placeholder.png'\n\t\t};\n\t}\n\n\tcomponentWillReceiveProps(nextProps) {\n\t\tif (nextProps.route) {\n\t\t\tthis.setState({ route: nextProps.route }, this.checkForAvatar());\n\t\t}\n\t\telse {\n\t\t\tthis.checkForAvatar();\n\t\t}\n\n\t\tif (nextProps.auth_store.currentUser && !this.props.auth_store.currentUser) {\n\t\t\tconsole.log('GOT USER'); //!!!!\n\t\t}\n\t}\n\n\trenderAvatar() {\n\t\tconst avatarStyle = `background-image: url(${this.state.avatarURL});`;\n\t\treturn (\n\t\t\t<span className={style.avatar} style={avatarStyle} />\n\t\t);\n\t}\n\n\trender() {\n\t\tconst currentUser = this.props.auth_store.user;\n\t\tconst route = this.props.route_store.route;\n\n\t\t//console.log('route', route);\n\n\t\tlet isLoginPage = false;\n\n\t\tif (route && route.indexOf('/login') > -1) {\n\t\t\tisLoginPage = true;\n\t\t}\n\n\t\tlet cx = classNames.bind(style);\n\n\t\tlet toolbarClasses = cx({\n\t\t\theader: true,\n\t\t\ttoolbar: true\n\t\t});\n\n\t\tconst showMenu = false;\n\t\tconst menuClass = showMenu ? '' : 'hidden';\n\n\t\treturn (\n\t\t\t<div>\n\t\t\t\t<TopAppBar className={toolbarClasses}>\n\t\t\t\t\t<TopAppBar.Row>\n\t\t\t\t\t\t<TopAppBar.Section align-start>\n\t\t\t\t\t\t\t<TopAppBar.Icon menu onClick={this.openDrawer} class={[menuClass, 'material-icons', 'mdc-toolbar__icon', 'mdc-toolbar__menu-icon'].join(' ')}>\n\t\t\t\t\t\t\tmenu\n\t\t\t\t\t\t\t</TopAppBar.Icon>\n\t\t\t\t\t\t\t<TopAppBar.Title>\n\t\t\t\t\t\t\t\t<div className=\"siteTitle\">\n\t\t\t\t\t\t\t\t\t<span className=\"greenHighlight\">Demo</span>\n\t\t\t\t\t\t\t\t\t<div className=\"wrenchIcon\" />\n\t\t\t\t\t\t\t\t\t<span className=\"orangeHighlight\">Site</span>\n\t\t\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t</TopAppBar.Title>\n\t\t\t\t\t\t</TopAppBar.Section>\n\t\t\t\t\t\t<TopAppBar.Section className={style.greeting}>\n\t\t\t\t\t\t\t<div>\n\t\t\t\t\t\t\t\t{!currentUser ?\n\t\t\t\t\t\t\t\t\t<div className={style.login_div}>\n\t\t\t\t\t\t\t\t\t\t{!isLoginPage &&\n\t\t\t\t\t\t\t\t\t\t\t<Link class={style.login} activeClassName={style.active} onClick={this.login}>Login</Link>\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t:\n\t\t\t\t\t\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t{this.renderAvatar()}\n\t\t\t\t\t\t\t\t\t\t<div>Welcome back, {currentUser.displayName}</div>\n\t\t\t\t\t\t\t\t\t\t<div className={style.logoutContainer}>\n\t\t\t\t\t\t\t\t\t\t\t<Link class={style.logout} activeClassName={style.active} onClick={this.logout}>Logout</Link>\n\t\t\t\t\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t</div>\n\t\t\t\t\t\t</TopAppBar.Section>\n\t\t\t\t\t\t<TopAppBar.Section align-end onClick={this.openSettings} className={style.settings}>\n\t\t\t\t\t\t\t<TopAppBar.Icon>settings</TopAppBar.Icon>\n\t\t\t\t\t\t</TopAppBar.Section>\n\t\t\t\t\t</TopAppBar.Row>\n\t\t\t\t</TopAppBar>\n\t\t\t\t<Dialog ref={this.dialogRef}>\n\t\t\t\t\t<Dialog.Header>Settings</Dialog.Header>\n\t\t\t\t\t<Dialog.Body>\n\t\t\t\t\t\t<div>\n\t\t\t\t\t\t\tEnable dark theme <Switch onClick={this.toggleDarkTheme} />\n\t\t\t\t\t\t</div>\n\t\t\t\t\t</Dialog.Body>\n\t\t\t\t\t<Dialog.Footer>\n\t\t\t\t\t\t<Dialog.FooterButton accept>okay</Dialog.FooterButton>\n\t\t\t\t\t</Dialog.Footer>\n\t\t\t\t</Dialog>\n\t\t\t</div>\n\t\t);\n\t}\n}\n\nexport default connect(mapStateToProps, mapDispatchToProps)(HeaderContent);\n\n\n// WEBPACK FOOTER //\n// ./components/header/index.js","import { h, Component } from 'preact';\nimport { Link } from 'preact-router/match';\nimport { route } from 'preact-router';\nimport { connect } from 'preact-redux';\nimport style from './style';\nimport classNames from 'classNames/bind';\n\n\nconst mapStateToProps = state => ({\n\troute_store: state.currentRoute\n});\nclass NavTile extends Component {\n\tlinkTo = path => () => {\n\t\troute(path);\n\t}\n\n\tdoNav = () => {\n\t\tif (typeof(this.props.route) !== 'undefined') {\n\t\t\troute(this.props.route);\n\t\t}\n\t}\n\n\trender() {\n\t\tconst currentRoute = this.props.route_store.route;\n\t\tconst { label, icon }  = this.props;\n\t\tlet cx = classNames.bind(style);\n\n\t\tlet tileAttr = {\n\t\t\tnavItem: true,\n\t\t\tdisabled: typeof(this.props.route) === 'undefined'\n\t\t};\n\n\t\tlet innerAttr = {\n\t\t\tnavIcon: true,\n\t\t\t'material-icons': true\n\t\t};\n\n\t\t//console.log(`route for ${label}, ${currentRoute}, ${this.props.route}`);\n\n\t\tif (currentRoute === this.props.route) {\n\t\t\tinnerAttr.active = true;\n\t\t}\n\n\t\tconst tileClassName = cx(tileAttr);\n\t\tconst innerClassName = cx(innerAttr);\n\n\t\treturn (\n\t\t\t<Link to=\"/\" onClick={this.doNav} className={tileClassName}>\n\t\t\t\t<i aria-hidden=\"true\" className={innerClassName}>{ icon }</i>\n\t\t\t\t<div className={style.label}>{label}</div>\n\t\t\t</Link>\n\t\t);\n\t}\n}\n\nexport default connect(mapStateToProps)(NavTile);\n\n\n// WEBPACK FOOTER //\n// ./components/nav/navTile.js","import { h, Component } from 'preact';\nimport NavTile from './navTile';\nimport { connect } from 'preact-redux';\nimport style from './style';\n\nconst mapStateToProps = (state) => ({\n\tuser: state.authentication.user\n});\n\nclass NavBar extends Component {\n\trender() {\n\t\treturn (\n\t\t\t<div className={style.navBar}>\n\t\t\t\t<NavTile label=\"Home\" icon=\"home\" route=\"/\" />\n\t\t\t\t{this.props.user\n\t\t\t\t\t?\n\t\t\t\t\t<NavTile label=\"Chat\" icon=\"chat_bubble_outline\" route=\"/chat\" />\n\t\t\t\t\t:\n\t\t\t\t\t<NavTile label=\"Chat\" icon=\"chat_bubble_outline\" />\n\t\t\t\t}\n\t\t\t\t<NavTile label=\"Census Map\" icon=\"language\" route=\"/map\" />\n\t\t\t\t{this.props.user\n\t\t\t\t\t?\n\t\t\t\t\t<NavTile label=\"Profile\" icon=\"account_circle\" route=\"/profile\" />\n\t\t\t\t\t:\n\t\t\t\t\t<NavTile label=\"Profile\" icon=\"account_circle\" />\n\t\t\t\t}\n\t\t\t</div>\n\t\t);\n\t}\n}\n\nexport default connect(mapStateToProps)(NavBar);\n\n\n// WEBPACK FOOTER //\n// ./components/nav/index.js","export var addLeadingSlash = function addLeadingSlash(path) {\n  return path.charAt(0) === '/' ? path : '/' + path;\n};\n\nexport var stripLeadingSlash = function stripLeadingSlash(path) {\n  return path.charAt(0) === '/' ? path.substr(1) : path;\n};\n\nexport var hasBasename = function hasBasename(path, prefix) {\n  return new RegExp('^' + prefix + '(\\\\/|\\\\?|#|$)', 'i').test(path);\n};\n\nexport var stripBasename = function stripBasename(path, prefix) {\n  return hasBasename(path, prefix) ? path.substr(prefix.length) : path;\n};\n\nexport var stripTrailingSlash = function stripTrailingSlash(path) {\n  return path.charAt(path.length - 1) === '/' ? path.slice(0, -1) : path;\n};\n\nexport var parsePath = function parsePath(path) {\n  var pathname = path || '/';\n  var search = '';\n  var hash = '';\n\n  var hashIndex = pathname.indexOf('#');\n  if (hashIndex !== -1) {\n    hash = pathname.substr(hashIndex);\n    pathname = pathname.substr(0, hashIndex);\n  }\n\n  var searchIndex = pathname.indexOf('?');\n  if (searchIndex !== -1) {\n    search = pathname.substr(searchIndex);\n    pathname = pathname.substr(0, searchIndex);\n  }\n\n  return {\n    pathname: pathname,\n    search: search === '?' ? '' : search,\n    hash: hash === '#' ? '' : hash\n  };\n};\n\nexport var createPath = function createPath(location) {\n  var pathname = location.pathname,\n      search = location.search,\n      hash = location.hash;\n\n\n  var path = pathname || '/';\n\n  if (search && search !== '?') path += search.charAt(0) === '?' ? search : '?' + search;\n\n  if (hash && hash !== '#') path += hash.charAt(0) === '#' ? hash : '#' + hash;\n\n  return path;\n};\n\n\n// WEBPACK FOOTER //\n// ../node_modules/history/es/PathUtils.js","var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nimport resolvePathname from 'resolve-pathname';\nimport valueEqual from 'value-equal';\nimport { parsePath } from './PathUtils';\n\nexport var createLocation = function createLocation(path, state, key, currentLocation) {\n  var location = void 0;\n  if (typeof path === 'string') {\n    // Two-arg form: push(path, state)\n    location = parsePath(path);\n    location.state = state;\n  } else {\n    // One-arg form: push(location)\n    location = _extends({}, path);\n\n    if (location.pathname === undefined) location.pathname = '';\n\n    if (location.search) {\n      if (location.search.charAt(0) !== '?') location.search = '?' + location.search;\n    } else {\n      location.search = '';\n    }\n\n    if (location.hash) {\n      if (location.hash.charAt(0) !== '#') location.hash = '#' + location.hash;\n    } else {\n      location.hash = '';\n    }\n\n    if (state !== undefined && location.state === undefined) location.state = state;\n  }\n\n  try {\n    location.pathname = decodeURI(location.pathname);\n  } catch (e) {\n    if (e instanceof URIError) {\n      throw new URIError('Pathname \"' + location.pathname + '\" could not be decoded. ' + 'This is likely caused by an invalid percent-encoding.');\n    } else {\n      throw e;\n    }\n  }\n\n  if (key) location.key = key;\n\n  if (currentLocation) {\n    // Resolve incomplete/relative pathname relative to current location.\n    if (!location.pathname) {\n      location.pathname = currentLocation.pathname;\n    } else if (location.pathname.charAt(0) !== '/') {\n      location.pathname = resolvePathname(location.pathname, currentLocation.pathname);\n    }\n  } else {\n    // When there is no prior location and pathname is empty, set it to /\n    if (!location.pathname) {\n      location.pathname = '/';\n    }\n  }\n\n  return location;\n};\n\nexport var locationsAreEqual = function locationsAreEqual(a, b) {\n  return a.pathname === b.pathname && a.search === b.search && a.hash === b.hash && a.key === b.key && valueEqual(a.state, b.state);\n};\n\n\n// WEBPACK FOOTER //\n// ../node_modules/history/es/LocationUtils.js","import warning from 'warning';\n\nvar createTransitionManager = function createTransitionManager() {\n  var prompt = null;\n\n  var setPrompt = function setPrompt(nextPrompt) {\n    warning(prompt == null, 'A history supports only one prompt at a time');\n\n    prompt = nextPrompt;\n\n    return function () {\n      if (prompt === nextPrompt) prompt = null;\n    };\n  };\n\n  var confirmTransitionTo = function confirmTransitionTo(location, action, getUserConfirmation, callback) {\n    // TODO: If another transition starts while we're still confirming\n    // the previous one, we may end up in a weird state. Figure out the\n    // best way to handle this.\n    if (prompt != null) {\n      var result = typeof prompt === 'function' ? prompt(location, action) : prompt;\n\n      if (typeof result === 'string') {\n        if (typeof getUserConfirmation === 'function') {\n          getUserConfirmation(result, callback);\n        } else {\n          warning(false, 'A history needs a getUserConfirmation function in order to use a prompt message');\n\n          callback(true);\n        }\n      } else {\n        // Return false from a transition hook to cancel the transition.\n        callback(result !== false);\n      }\n    } else {\n      callback(true);\n    }\n  };\n\n  var listeners = [];\n\n  var appendListener = function appendListener(fn) {\n    var isActive = true;\n\n    var listener = function listener() {\n      if (isActive) fn.apply(undefined, arguments);\n    };\n\n    listeners.push(listener);\n\n    return function () {\n      isActive = false;\n      listeners = listeners.filter(function (item) {\n        return item !== listener;\n      });\n    };\n  };\n\n  var notifyListeners = function notifyListeners() {\n    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    listeners.forEach(function (listener) {\n      return listener.apply(undefined, args);\n    });\n  };\n\n  return {\n    setPrompt: setPrompt,\n    confirmTransitionTo: confirmTransitionTo,\n    appendListener: appendListener,\n    notifyListeners: notifyListeners\n  };\n};\n\nexport default createTransitionManager;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/history/es/createTransitionManager.js","export var canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);\n\nexport var addEventListener = function addEventListener(node, event, listener) {\n  return node.addEventListener ? node.addEventListener(event, listener, false) : node.attachEvent('on' + event, listener);\n};\n\nexport var removeEventListener = function removeEventListener(node, event, listener) {\n  return node.removeEventListener ? node.removeEventListener(event, listener, false) : node.detachEvent('on' + event, listener);\n};\n\nexport var getConfirmation = function getConfirmation(message, callback) {\n  return callback(window.confirm(message));\n}; // eslint-disable-line no-alert\n\n/**\n * Returns true if the HTML5 history API is supported. Taken from Modernizr.\n *\n * https://github.com/Modernizr/Modernizr/blob/master/LICENSE\n * https://github.com/Modernizr/Modernizr/blob/master/feature-detects/history.js\n * changed to avoid false negatives for Windows Phones: https://github.com/reactjs/react-router/issues/586\n */\nexport var supportsHistory = function supportsHistory() {\n  var ua = window.navigator.userAgent;\n\n  if ((ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) && ua.indexOf('Mobile Safari') !== -1 && ua.indexOf('Chrome') === -1 && ua.indexOf('Windows Phone') === -1) return false;\n\n  return window.history && 'pushState' in window.history;\n};\n\n/**\n * Returns true if browser fires popstate on hash change.\n * IE10 and IE11 do not.\n */\nexport var supportsPopStateOnHashChange = function supportsPopStateOnHashChange() {\n  return window.navigator.userAgent.indexOf('Trident') === -1;\n};\n\n/**\n * Returns false if using go(n) with hash history causes a full page reload.\n */\nexport var supportsGoWithoutReloadUsingHash = function supportsGoWithoutReloadUsingHash() {\n  return window.navigator.userAgent.indexOf('Firefox') === -1;\n};\n\n/**\n * Returns true if a given popstate event is an extraneous WebKit event.\n * Accounts for the fact that Chrome on iOS fires real popstate events\n * containing undefined state when pressing the back button.\n */\nexport var isExtraneousPopstateEvent = function isExtraneousPopstateEvent(event) {\n  return event.state === undefined && navigator.userAgent.indexOf('CriOS') === -1;\n};\n\n\n// WEBPACK FOOTER //\n// ../node_modules/history/es/DOMUtils.js","var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nimport warning from 'warning';\nimport invariant from 'invariant';\nimport { createLocation, locationsAreEqual } from './LocationUtils';\nimport { addLeadingSlash, stripLeadingSlash, stripTrailingSlash, hasBasename, stripBasename, createPath } from './PathUtils';\nimport createTransitionManager from './createTransitionManager';\nimport { canUseDOM, addEventListener, removeEventListener, getConfirmation, supportsGoWithoutReloadUsingHash } from './DOMUtils';\n\nvar HashChangeEvent = 'hashchange';\n\nvar HashPathCoders = {\n  hashbang: {\n    encodePath: function encodePath(path) {\n      return path.charAt(0) === '!' ? path : '!/' + stripLeadingSlash(path);\n    },\n    decodePath: function decodePath(path) {\n      return path.charAt(0) === '!' ? path.substr(1) : path;\n    }\n  },\n  noslash: {\n    encodePath: stripLeadingSlash,\n    decodePath: addLeadingSlash\n  },\n  slash: {\n    encodePath: addLeadingSlash,\n    decodePath: addLeadingSlash\n  }\n};\n\nvar getHashPath = function getHashPath() {\n  // We can't use window.location.hash here because it's not\n  // consistent across browsers - Firefox will pre-decode it!\n  var href = window.location.href;\n  var hashIndex = href.indexOf('#');\n  return hashIndex === -1 ? '' : href.substring(hashIndex + 1);\n};\n\nvar pushHashPath = function pushHashPath(path) {\n  return window.location.hash = path;\n};\n\nvar replaceHashPath = function replaceHashPath(path) {\n  var hashIndex = window.location.href.indexOf('#');\n\n  window.location.replace(window.location.href.slice(0, hashIndex >= 0 ? hashIndex : 0) + '#' + path);\n};\n\nvar createHashHistory = function createHashHistory() {\n  var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n  invariant(canUseDOM, 'Hash history needs a DOM');\n\n  var globalHistory = window.history;\n  var canGoWithoutReload = supportsGoWithoutReloadUsingHash();\n\n  var _props$getUserConfirm = props.getUserConfirmation,\n      getUserConfirmation = _props$getUserConfirm === undefined ? getConfirmation : _props$getUserConfirm,\n      _props$hashType = props.hashType,\n      hashType = _props$hashType === undefined ? 'slash' : _props$hashType;\n\n  var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';\n\n  var _HashPathCoders$hashT = HashPathCoders[hashType],\n      encodePath = _HashPathCoders$hashT.encodePath,\n      decodePath = _HashPathCoders$hashT.decodePath;\n\n\n  var getDOMLocation = function getDOMLocation() {\n    var path = decodePath(getHashPath());\n\n    warning(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path \"' + path + '\" to begin with \"' + basename + '\".');\n\n    if (basename) path = stripBasename(path, basename);\n\n    return createLocation(path);\n  };\n\n  var transitionManager = createTransitionManager();\n\n  var setState = function setState(nextState) {\n    _extends(history, nextState);\n\n    history.length = globalHistory.length;\n\n    transitionManager.notifyListeners(history.location, history.action);\n  };\n\n  var forceNextPop = false;\n  var ignorePath = null;\n\n  var handleHashChange = function handleHashChange() {\n    var path = getHashPath();\n    var encodedPath = encodePath(path);\n\n    if (path !== encodedPath) {\n      // Ensure we always have a properly-encoded hash.\n      replaceHashPath(encodedPath);\n    } else {\n      var location = getDOMLocation();\n      var prevLocation = history.location;\n\n      if (!forceNextPop && locationsAreEqual(prevLocation, location)) return; // A hashchange doesn't always == location change.\n\n      if (ignorePath === createPath(location)) return; // Ignore this change; we already setState in push/replace.\n\n      ignorePath = null;\n\n      handlePop(location);\n    }\n  };\n\n  var handlePop = function handlePop(location) {\n    if (forceNextPop) {\n      forceNextPop = false;\n      setState();\n    } else {\n      var action = 'POP';\n\n      transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n        if (ok) {\n          setState({ action: action, location: location });\n        } else {\n          revertPop(location);\n        }\n      });\n    }\n  };\n\n  var revertPop = function revertPop(fromLocation) {\n    var toLocation = history.location;\n\n    // TODO: We could probably make this more reliable by\n    // keeping a list of paths we've seen in sessionStorage.\n    // Instead, we just default to 0 for paths we don't know.\n\n    var toIndex = allPaths.lastIndexOf(createPath(toLocation));\n\n    if (toIndex === -1) toIndex = 0;\n\n    var fromIndex = allPaths.lastIndexOf(createPath(fromLocation));\n\n    if (fromIndex === -1) fromIndex = 0;\n\n    var delta = toIndex - fromIndex;\n\n    if (delta) {\n      forceNextPop = true;\n      go(delta);\n    }\n  };\n\n  // Ensure the hash is encoded properly before doing anything else.\n  var path = getHashPath();\n  var encodedPath = encodePath(path);\n\n  if (path !== encodedPath) replaceHashPath(encodedPath);\n\n  var initialLocation = getDOMLocation();\n  var allPaths = [createPath(initialLocation)];\n\n  // Public interface\n\n  var createHref = function createHref(location) {\n    return '#' + encodePath(basename + createPath(location));\n  };\n\n  var push = function push(path, state) {\n    warning(state === undefined, 'Hash history cannot push state; it is ignored');\n\n    var action = 'PUSH';\n    var location = createLocation(path, undefined, undefined, history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var path = createPath(location);\n      var encodedPath = encodePath(basename + path);\n      var hashChanged = getHashPath() !== encodedPath;\n\n      if (hashChanged) {\n        // We cannot tell if a hashchange was caused by a PUSH, so we'd\n        // rather setState here and ignore the hashchange. The caveat here\n        // is that other hash histories in the page will consider it a POP.\n        ignorePath = path;\n        pushHashPath(encodedPath);\n\n        var prevIndex = allPaths.lastIndexOf(createPath(history.location));\n        var nextPaths = allPaths.slice(0, prevIndex === -1 ? 0 : prevIndex + 1);\n\n        nextPaths.push(path);\n        allPaths = nextPaths;\n\n        setState({ action: action, location: location });\n      } else {\n        warning(false, 'Hash history cannot PUSH the same path; a new entry will not be added to the history stack');\n\n        setState();\n      }\n    });\n  };\n\n  var replace = function replace(path, state) {\n    warning(state === undefined, 'Hash history cannot replace state; it is ignored');\n\n    var action = 'REPLACE';\n    var location = createLocation(path, undefined, undefined, history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var path = createPath(location);\n      var encodedPath = encodePath(basename + path);\n      var hashChanged = getHashPath() !== encodedPath;\n\n      if (hashChanged) {\n        // We cannot tell if a hashchange was caused by a REPLACE, so we'd\n        // rather setState here and ignore the hashchange. The caveat here\n        // is that other hash histories in the page will consider it a POP.\n        ignorePath = path;\n        replaceHashPath(encodedPath);\n      }\n\n      var prevIndex = allPaths.indexOf(createPath(history.location));\n\n      if (prevIndex !== -1) allPaths[prevIndex] = path;\n\n      setState({ action: action, location: location });\n    });\n  };\n\n  var go = function go(n) {\n    warning(canGoWithoutReload, 'Hash history go(n) causes a full page reload in this browser');\n\n    globalHistory.go(n);\n  };\n\n  var goBack = function goBack() {\n    return go(-1);\n  };\n\n  var goForward = function goForward() {\n    return go(1);\n  };\n\n  var listenerCount = 0;\n\n  var checkDOMListeners = function checkDOMListeners(delta) {\n    listenerCount += delta;\n\n    if (listenerCount === 1) {\n      addEventListener(window, HashChangeEvent, handleHashChange);\n    } else if (listenerCount === 0) {\n      removeEventListener(window, HashChangeEvent, handleHashChange);\n    }\n  };\n\n  var isBlocked = false;\n\n  var block = function block() {\n    var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n\n    var unblock = transitionManager.setPrompt(prompt);\n\n    if (!isBlocked) {\n      checkDOMListeners(1);\n      isBlocked = true;\n    }\n\n    return function () {\n      if (isBlocked) {\n        isBlocked = false;\n        checkDOMListeners(-1);\n      }\n\n      return unblock();\n    };\n  };\n\n  var listen = function listen(listener) {\n    var unlisten = transitionManager.appendListener(listener);\n    checkDOMListeners(1);\n\n    return function () {\n      checkDOMListeners(-1);\n      unlisten();\n    };\n  };\n\n  var history = {\n    length: globalHistory.length,\n    action: 'POP',\n    location: initialLocation,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    block: block,\n    listen: listen\n  };\n\n  return history;\n};\n\nexport default createHashHistory;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/history/es/createHashHistory.js","var _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nimport warning from 'warning';\nimport invariant from 'invariant';\nimport { createLocation } from './LocationUtils';\nimport { addLeadingSlash, stripTrailingSlash, hasBasename, stripBasename, createPath } from './PathUtils';\nimport createTransitionManager from './createTransitionManager';\nimport { canUseDOM, addEventListener, removeEventListener, getConfirmation, supportsHistory, supportsPopStateOnHashChange, isExtraneousPopstateEvent } from './DOMUtils';\n\nvar PopStateEvent = 'popstate';\nvar HashChangeEvent = 'hashchange';\n\nvar getHistoryState = function getHistoryState() {\n  try {\n    return window.history.state || {};\n  } catch (e) {\n    // IE 11 sometimes throws when accessing window.history.state\n    // See https://github.com/ReactTraining/history/pull/289\n    return {};\n  }\n};\n\n/**\n * Creates a history object that uses the HTML5 history API including\n * pushState, replaceState, and the popstate event.\n */\nvar createBrowserHistory = function createBrowserHistory() {\n  var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n  invariant(canUseDOM, 'Browser history needs a DOM');\n\n  var globalHistory = window.history;\n  var canUseHistory = supportsHistory();\n  var needsHashChangeListener = !supportsPopStateOnHashChange();\n\n  var _props$forceRefresh = props.forceRefresh,\n      forceRefresh = _props$forceRefresh === undefined ? false : _props$forceRefresh,\n      _props$getUserConfirm = props.getUserConfirmation,\n      getUserConfirmation = _props$getUserConfirm === undefined ? getConfirmation : _props$getUserConfirm,\n      _props$keyLength = props.keyLength,\n      keyLength = _props$keyLength === undefined ? 6 : _props$keyLength;\n\n  var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';\n\n  var getDOMLocation = function getDOMLocation(historyState) {\n    var _ref = historyState || {},\n        key = _ref.key,\n        state = _ref.state;\n\n    var _window$location = window.location,\n        pathname = _window$location.pathname,\n        search = _window$location.search,\n        hash = _window$location.hash;\n\n\n    var path = pathname + search + hash;\n\n    warning(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path \"' + path + '\" to begin with \"' + basename + '\".');\n\n    if (basename) path = stripBasename(path, basename);\n\n    return createLocation(path, state, key);\n  };\n\n  var createKey = function createKey() {\n    return Math.random().toString(36).substr(2, keyLength);\n  };\n\n  var transitionManager = createTransitionManager();\n\n  var setState = function setState(nextState) {\n    _extends(history, nextState);\n\n    history.length = globalHistory.length;\n\n    transitionManager.notifyListeners(history.location, history.action);\n  };\n\n  var handlePopState = function handlePopState(event) {\n    // Ignore extraneous popstate events in WebKit.\n    if (isExtraneousPopstateEvent(event)) return;\n\n    handlePop(getDOMLocation(event.state));\n  };\n\n  var handleHashChange = function handleHashChange() {\n    handlePop(getDOMLocation(getHistoryState()));\n  };\n\n  var forceNextPop = false;\n\n  var handlePop = function handlePop(location) {\n    if (forceNextPop) {\n      forceNextPop = false;\n      setState();\n    } else {\n      var action = 'POP';\n\n      transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n        if (ok) {\n          setState({ action: action, location: location });\n        } else {\n          revertPop(location);\n        }\n      });\n    }\n  };\n\n  var revertPop = function revertPop(fromLocation) {\n    var toLocation = history.location;\n\n    // TODO: We could probably make this more reliable by\n    // keeping a list of keys we've seen in sessionStorage.\n    // Instead, we just default to 0 for keys we don't know.\n\n    var toIndex = allKeys.indexOf(toLocation.key);\n\n    if (toIndex === -1) toIndex = 0;\n\n    var fromIndex = allKeys.indexOf(fromLocation.key);\n\n    if (fromIndex === -1) fromIndex = 0;\n\n    var delta = toIndex - fromIndex;\n\n    if (delta) {\n      forceNextPop = true;\n      go(delta);\n    }\n  };\n\n  var initialLocation = getDOMLocation(getHistoryState());\n  var allKeys = [initialLocation.key];\n\n  // Public interface\n\n  var createHref = function createHref(location) {\n    return basename + createPath(location);\n  };\n\n  var push = function push(path, state) {\n    warning(!((typeof path === 'undefined' ? 'undefined' : _typeof(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored');\n\n    var action = 'PUSH';\n    var location = createLocation(path, state, createKey(), history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var href = createHref(location);\n      var key = location.key,\n          state = location.state;\n\n\n      if (canUseHistory) {\n        globalHistory.pushState({ key: key, state: state }, null, href);\n\n        if (forceRefresh) {\n          window.location.href = href;\n        } else {\n          var prevIndex = allKeys.indexOf(history.location.key);\n          var nextKeys = allKeys.slice(0, prevIndex === -1 ? 0 : prevIndex + 1);\n\n          nextKeys.push(location.key);\n          allKeys = nextKeys;\n\n          setState({ action: action, location: location });\n        }\n      } else {\n        warning(state === undefined, 'Browser history cannot push state in browsers that do not support HTML5 history');\n\n        window.location.href = href;\n      }\n    });\n  };\n\n  var replace = function replace(path, state) {\n    warning(!((typeof path === 'undefined' ? 'undefined' : _typeof(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to replace when the 1st ' + 'argument is a location-like object that already has state; it is ignored');\n\n    var action = 'REPLACE';\n    var location = createLocation(path, state, createKey(), history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var href = createHref(location);\n      var key = location.key,\n          state = location.state;\n\n\n      if (canUseHistory) {\n        globalHistory.replaceState({ key: key, state: state }, null, href);\n\n        if (forceRefresh) {\n          window.location.replace(href);\n        } else {\n          var prevIndex = allKeys.indexOf(history.location.key);\n\n          if (prevIndex !== -1) allKeys[prevIndex] = location.key;\n\n          setState({ action: action, location: location });\n        }\n      } else {\n        warning(state === undefined, 'Browser history cannot replace state in browsers that do not support HTML5 history');\n\n        window.location.replace(href);\n      }\n    });\n  };\n\n  var go = function go(n) {\n    globalHistory.go(n);\n  };\n\n  var goBack = function goBack() {\n    return go(-1);\n  };\n\n  var goForward = function goForward() {\n    return go(1);\n  };\n\n  var listenerCount = 0;\n\n  var checkDOMListeners = function checkDOMListeners(delta) {\n    listenerCount += delta;\n\n    if (listenerCount === 1) {\n      addEventListener(window, PopStateEvent, handlePopState);\n\n      if (needsHashChangeListener) addEventListener(window, HashChangeEvent, handleHashChange);\n    } else if (listenerCount === 0) {\n      removeEventListener(window, PopStateEvent, handlePopState);\n\n      if (needsHashChangeListener) removeEventListener(window, HashChangeEvent, handleHashChange);\n    }\n  };\n\n  var isBlocked = false;\n\n  var block = function block() {\n    var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n\n    var unblock = transitionManager.setPrompt(prompt);\n\n    if (!isBlocked) {\n      checkDOMListeners(1);\n      isBlocked = true;\n    }\n\n    return function () {\n      if (isBlocked) {\n        isBlocked = false;\n        checkDOMListeners(-1);\n      }\n\n      return unblock();\n    };\n  };\n\n  var listen = function listen(listener) {\n    var unlisten = transitionManager.appendListener(listener);\n    checkDOMListeners(1);\n\n    return function () {\n      checkDOMListeners(-1);\n      unlisten();\n    };\n  };\n\n  var history = {\n    length: globalHistory.length,\n    action: 'POP',\n    location: initialLocation,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    block: block,\n    listen: listen\n  };\n\n  return history;\n};\n\nexport default createBrowserHistory;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/history/es/createBrowserHistory.js","import { h, Component } from 'preact';\nimport { Router, route, getCurrentUrl } from 'preact-router';\n\nimport HeaderContent from './header';\nimport HomePage from '../routes/home';\nimport ProfilePage from '../routes/profile';\nimport ChatPage from '../routes/chat';\nimport QuestionsPage from '../routes/questions';\nimport PresentationsPage from '../routes/presentations';\nimport MapsPage from '../routes/map';\nimport NotFound from '../routes/404';\n\nimport NavBar from './nav';\nimport * as qs from 'query-string';\nimport { auth } from './../firebase';\nimport { connect } from 'preact-redux';  //redux\nimport { SET_ROUTE, SET_CHANNEL } from '../constants'; //redux\nimport { setAuthUserAction } from '../actions';\nimport {\n\tattachMessageListeners,\n\tunattachMessageListeners,\n\tattachQuestionListeners,\n\tunattachQuestionListeners\n} from './../firebase/db';  // attach listeners\n\nimport { createHashHistory } from 'history';\n\nconst mapStateToProps = state => ({\n\tauth_store: state.authentication,\n\troute_store: state.route,\n\tchannel_store: state.channel,\n\tchat_store: state.chatMessages\n});\n\nconst mapDispatchToProps = dispatch => ({\n\tsetAuthUser: () => {\n\t\tdispatch(setAuthUserAction());\n\t},\n\tsetRoute: route => {\n\t\tdispatch({ type: SET_ROUTE, route });\n\t},\n\tsetChannel: channel => {\n\t\tif (!channel) {\n\t\t\tchannel = 'main';\n\t\t}\n\t\tdispatch({ type: SET_CHANNEL, channel });\n\t},\n\tattachListeners: () => {\n\t\tattachMessageListeners(dispatch); //TBD probably need to dispatch these instead of passing a dispatch reference\n\t\tattachQuestionListeners(dispatch);\n\t}\n});\n\nclass App extends Component {\n\t/** Gets fired when the route changes.\n\t *\t@param {Object} event\t\t\"change\" event from [preact-router](http://git.io/preact-router)\n\t *\t@param {string} event.url\tThe newly routed URL\n\t */\n\thandleRoute = e => {\n\t\tthis.currentUrl = e.url;\n\t\tthis.handleQueryParams();\n\t\tthis.props.setRoute(e.url);\n\t};\n\n\tcheckRouteRestrictions = () => {\n\t\tconst currentUrl = getCurrentUrl();\n\n\t\tlet restrictedRoutes;\n\t\tlet reroute;\n\n\t\trestrictedRoutes = ['/profile', '/chat', '/questions', '/presentations'];\n\t\treroute = '/';\n\n\t\tif (restrictedRoutes.includes(currentUrl)) {\n\t\t\tconsole.log('restricted route');\n\t\t\troute(reroute);\n\t\t}\n\t\telse {\n\t\t\tconsole.log('NOT a restricted route');\n\t\t}\n\t}\n\n\thandleQueryParams = () => {\n\t\tlet channel = 'main';\n\t\tconst queryParams = qs.parse(location.search);\n\n\t\tif (queryParams.channel) {\n\t\t\tchannel = queryParams.channel;\n\t\t\tsessionStorage.setItem('channel', channel);\n\t\t}\n\t\telse {\n\t\t\tchannel = sessionStorage.getItem('channel');\n\t\t}\n\n\t\tthis.props.setChannel(channel);\n\t\tthis.setState({ channel });\n\t}\n\n\tunattachListeners = () => {\n\t\tunattachMessageListeners(this.props.channel_store.channel); // don't need a dispatch, so we can call this directly\n\t\tunattachQuestionListeners(this.props.channel_store.channel); // don't need a dispatch, so we can call this directly\n\t}\n\n\tconstructor(props) {\n\t\tsuper(props);\n\n\t\tauth.onAuthStateChanged(currentUser => {\n\t\t\tthis.props.setAuthUser();\n\t\t\tconsole.log('auth state changed', currentUser);\n\t\t\tif (!currentUser) {\n\t\t\t\tthis.checkRouteRestrictions();\n\t\t\t\tthis.unattachListeners();\n\t\t\t}\n\t\t\telse {\n\t\t\t\tthis.props.attachListeners();\n\t\t\t}\n\t\t});\n\t}\n\n\tcomponentDidMount() {\n\t\tthis.props.attachListeners();\n\t}\n\n\tcomponentWillUnmount() {\n\t\tthis.unattachListeners();\n\t\tconsole.log('stopped listening to database');\n\t}\n\n\trender() {\n\t\treturn (\n\t\t\t<div id=\"app\">\n\t\t\t\t<link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css\" integrity=\"sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u\" crossorigin=\"anonymous\" />\n\t\t\t\t<link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css\" integrity=\"sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp\" crossorigin=\"anonymous\" />\n\t\t\t\t\n\t\t\t\t<header>\n\t\t\t\t\t<HeaderContent />\n\t\t\t\t</header>\n\n\t\t\t\t<main>\n\t\t\t\t\t<Router onChange={this.handleRoute} history={createHashHistory()}>\n\t\t\t\t\t\t<HomePage path=\"/\" />\n\t\t\t\t\t\t<ProfilePage path=\"/profile/\" user=\"me\" />\n\t\t\t\t\t\t<ProfilePage path=\"/profile/:user\" />\n\t\t\t\t\t\t<QuestionsPage path=\"/questions/\" />\n\t\t\t\t\t\t<PresentationsPage path=\"/presentations/\" />\n\t\t\t\t\t\t<MapsPage path=\"/map/\" />\n\t\t\t\t\t\t<ChatPage path=\"/chat/\" />\n\t\t\t\t\t\t<NotFound default />\n\t\t\t\t\t</Router>\n\t\t\t\t</main>\n\n\t\t\t\t<footer><NavBar /></footer>\n\t\t\t</div>\n\t\t);\n\t}\n}\n\nexport default connect(mapStateToProps, mapDispatchToProps)(App);\n\n\n// WEBPACK FOOTER //\n// ./components/app.js","var _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nimport warning from 'warning';\nimport { createPath } from './PathUtils';\nimport { createLocation } from './LocationUtils';\nimport createTransitionManager from './createTransitionManager';\n\nvar clamp = function clamp(n, lowerBound, upperBound) {\n  return Math.min(Math.max(n, lowerBound), upperBound);\n};\n\n/**\n * Creates a history object that stores locations in memory.\n */\nvar createMemoryHistory = function createMemoryHistory() {\n  var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  var getUserConfirmation = props.getUserConfirmation,\n      _props$initialEntries = props.initialEntries,\n      initialEntries = _props$initialEntries === undefined ? ['/'] : _props$initialEntries,\n      _props$initialIndex = props.initialIndex,\n      initialIndex = _props$initialIndex === undefined ? 0 : _props$initialIndex,\n      _props$keyLength = props.keyLength,\n      keyLength = _props$keyLength === undefined ? 6 : _props$keyLength;\n\n\n  var transitionManager = createTransitionManager();\n\n  var setState = function setState(nextState) {\n    _extends(history, nextState);\n\n    history.length = history.entries.length;\n\n    transitionManager.notifyListeners(history.location, history.action);\n  };\n\n  var createKey = function createKey() {\n    return Math.random().toString(36).substr(2, keyLength);\n  };\n\n  var index = clamp(initialIndex, 0, initialEntries.length - 1);\n  var entries = initialEntries.map(function (entry) {\n    return typeof entry === 'string' ? createLocation(entry, undefined, createKey()) : createLocation(entry, undefined, entry.key || createKey());\n  });\n\n  // Public interface\n\n  var createHref = createPath;\n\n  var push = function push(path, state) {\n    warning(!((typeof path === 'undefined' ? 'undefined' : _typeof(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored');\n\n    var action = 'PUSH';\n    var location = createLocation(path, state, createKey(), history.location);\n\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n\n      var prevIndex = history.index;\n      var nextIndex = prevIndex + 1;\n\n      var nextEntries = history.entries.slice(0);\n      if (nextEntries.length > nextIndex) {\n        nextEntries.splice(nextIndex, nextEntries.length - nextIndex, location);\n      } else {\n        nextEntries.push(location);\n      }\n\n      setState({\n        action: action,\n        location: location,\n        index: nextIndex,\n        entries: nextEntries\n      });\n    });\n  };\n\n  var replace = function replace(path, state) {\n    warning(!((typeof path === 'undefined' ? 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_createClass2.default)(DialogFooterButton, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"button\", Object.assign({}, props, {\n        className: \"mdc-button\",\n        ref: this.setControlRef\n      }), props.children);\n    }\n  }]);\n  return DialogFooterButton;\n}(_Button2.Button);\n\nexports.DialogFooterButton = DialogFooterButton;\n\n__decorate([_bindDecorator.bind], DialogFooterButton.prototype, \"materialDom\", null);\n\nvar Dialog =\n/*#__PURE__*/\nfunction (_MaterialComponent4) {\n  (0, _inherits2.default)(Dialog, _MaterialComponent4);\n\n  function Dialog() {\n    var _this5;\n\n    (0, _classCallCheck2.default)(this, Dialog);\n    _this5 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(Dialog).apply(this, arguments));\n    _this5.componentName = 'dialog';\n    _this5.mdcProps = [];\n    return _this5;\n  }\n\n  (0, _createClass2.default)(Dialog, [{\n    key: \"componentDidMount\",\n    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Object : function (it) {\n  return cof(it) == 'String' ? it.split('') : Object(it);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_iobject.js","/* global window */\nimport ponyfill from './ponyfill.js';\n\nvar root;\n\nif (typeof self !== 'undefined') {\n  root = self;\n} else if (typeof window !== 'undefined') {\n  root = window;\n} else if (typeof global !== 'undefined') {\n  root = global;\n} else if (typeof module !== 'undefined') {\n  root = module;\n} else {\n  root = Function('return this')();\n}\n\nvar result = ponyfill(root);\nexport default result;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/symbol-observable/es/index.js","// Thank's IE8 for his funny defineProperty\nmodule.exports = !require('./_fails')(function () {\n  return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;\n});\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_descriptors.js","var global = require('./_global');\nvar SHARED = '__core-js_shared__';\nvar store = global[SHARED] || (global[SHARED] = {});\nmodule.exports = function (key) {\n  return store[key] || (store[key] = {});\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_shared.js","// 7.2.8 IsRegExp(argument)\nvar isObject = require('./_is-object');\nvar cof = require('./_cof');\nvar MATCH = require('./_wks')('match');\nmodule.exports = function (it) {\n  var isRegExp;\n  return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : cof(it) == 'RegExp');\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_is-regexp.js","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.Icon = void 0;\n\nvar _classCallCheck2 = _interopRequireDefault(require(\"@babel/runtime/helpers/classCallCheck\"));\n\nvar _createClass2 = _interopRequireDefault(require(\"@babel/runtime/helpers/createClass\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(require(\"@babel/runtime/helpers/possibleConstructorReturn\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(require(\"@babel/runtime/helpers/getPrototypeOf\"));\n\nvar _inherits2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inherits\"));\n\nvar _preact = require(\"preact\");\n\nvar _MaterialComponent2 = _interopRequireDefault(require(\"../Base/MaterialComponent\"));\n\nvar Icon =\n/*#__PURE__*/\nfunction (_MaterialComponent) {\n  (0, _inherits2.default)(Icon, _MaterialComponent);\n\n  function Icon() {\n    var _this;\n\n    (0, _classCallCheck2.default)(this, Icon);\n    _this = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(Icon).apply(this, arguments));\n    _this.componentName = 'icon';\n    _this.mdcProps = [];\n    return _this;\n  }\n\n  (0, _createClass2.default)(Icon, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      var classes = ['material-icons']; // CardActionIcon sends className\n\n      if (props.className) {\n        classes.push(props.className);\n      }\n\n      return (0, _preact.h)(\"i\", Object.assign({}, props, {\n        className: classes.join(' ')\n      }), props.children);\n    }\n  }]);\n  return Icon;\n}(_MaterialComponent2.default);\n\nexports.Icon = Icon;\nvar _default = Icon;\nexports.default = _default;\n//# sourceMappingURL=index.js.map\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-material-components/Icon/index.js","var g;\r\n\r\n// This works in non-strict mode\r\ng = (function() {\r\n\treturn this;\r\n})();\r\n\r\ntry {\r\n\t// This works if eval is allowed (see CSP)\r\n\tg = g || Function(\"return this\")() || (1,eval)(\"this\");\r\n} catch(e) {\r\n\t// This works if the window reference is available\r\n\tif(typeof window === \"object\")\r\n\t\tg = window;\r\n}\r\n\r\n// g can still be undefined, but nothing to do about it...\r\n// We return undefined, instead of nothing here, so it's\r\n// easier to handle this case. if(!global) { ...}\r\n\r\nmodule.exports = g;\r\n\n\n\n// WEBPACK FOOTER //\n// (webpack)/buildin/global.js","// removed by extract-text-webpack-plugin\nmodule.exports = {\"navItem\":\"navItem__1iPk5\",\"disabled\":\"disabled__IdCnz\",\"navIcon\":\"navIcon__2mlky\",\"active\":\"active__RjRdm\",\"navBar\":\"navBar__2VhTd\"};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./components/nav/style.css\n// module id = NDhg\n// module chunks = 7","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/* eslint no-unused-vars: [2, {\"args\": \"none\"}] */\n\n/**\n * Adapter for MDC Top App Bar\n *\n * Defines the shape of the adapter expected by the foundation. Implement this\n * adapter to integrate the Top App Bar into your framework. See\n * https://github.com/material-components/material-components-web/blob/master/docs/authoring-components.md\n * for more information.\n *\n * @record\n */\nclass MDCTopAppBarAdapter {\n  /**\n   * Adds a class to the root Element.\n   * @param {string} className\n   */\n  addClass(className) {}\n\n  /**\n   * Removes a class from the root Element.\n   * @param {string} className\n   */\n  removeClass(className) {}\n\n  /**\n   * Returns true if the root Element contains the given class.\n   * @param {string} className\n   * @return {boolean}\n   */\n  hasClass(className) {}\n\n  /**\n   * Sets the specified inline style property on the root Element to the given value.\n   * @param {string} property\n   * @param {string} value\n   */\n  setStyle(property, value) {}\n\n  /**\n   * Gets the height of the top app bar.\n   * @return {number}\n   */\n  getTopAppBarHeight() {}\n\n  /**\n   * Registers an event handler on the navigation icon element for a given event.\n   * @param {string} type\n   * @param {function(!Event): undefined} handler\n   */\n  registerNavigationIconInteractionHandler(type, handler) {}\n\n  /**\n   * Deregisters an event handler on the navigation icon element for a given event.\n   * @param {string} type\n   * @param {function(!Event): undefined} handler\n   */\n  deregisterNavigationIconInteractionHandler(type, handler) {}\n\n  /**\n   * Emits an event when the navigation icon is clicked.\n   */\n  notifyNavigationIconClicked() {}\n\n  /** @param {function(!Event)} handler */\n  registerScrollHandler(handler) {}\n\n  /** @param {function(!Event)} handler */\n  deregisterScrollHandler(handler) {}\n\n  /** @param {function(!Event)} handler */\n  registerResizeHandler(handler) {}\n\n  /** @param {function(!Event)} handler */\n  deregisterResizeHandler(handler) {}\n\n  /** @return {number} */\n  getViewportScrollY() {}\n\n  /** @return {number} */\n  getTotalActionItems() {}\n}\n\nexport default MDCTopAppBarAdapter;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/top-app-bar/adapter.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** @enum {string} */\nconst cssClasses = {\n  FIXED_CLASS: 'mdc-top-app-bar--fixed',\n  FIXED_SCROLLED_CLASS: 'mdc-top-app-bar--fixed-scrolled',\n  SHORT_CLASS: 'mdc-top-app-bar--short',\n  SHORT_HAS_ACTION_ITEM_CLASS: 'mdc-top-app-bar--short-has-action-item',\n  SHORT_COLLAPSED_CLASS: 'mdc-top-app-bar--short-collapsed',\n};\n\n/** @enum {number} */\nconst numbers = {\n  DEBOUNCE_THROTTLE_RESIZE_TIME_MS: 100,\n  MAX_TOP_APP_BAR_HEIGHT: 128,\n};\n\n/** @enum {string} */\nconst strings = {\n  ACTION_ITEM_SELECTOR: '.mdc-top-app-bar__action-item',\n  NAVIGATION_EVENT: 'MDCTopAppBar:nav',\n  NAVIGATION_ICON_SELECTOR: '.mdc-top-app-bar__navigation-icon',\n  ROOT_SELECTOR: '.mdc-top-app-bar',\n  TITLE_SELECTOR: '.mdc-top-app-bar__title',\n};\n\nexport {strings, cssClasses, numbers};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/top-app-bar/constants.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {strings, cssClasses, numbers} from './constants';\nimport MDCTopAppBarAdapter from './adapter';\nimport MDCFoundation from '@material/base/foundation';\n\n/**\n * @extends {MDCFoundation<!MDCTopAppBarAdapter>}\n */\nclass MDCTopAppBarBaseFoundation extends MDCFoundation {\n  /** @return enum {string} */\n  static get strings() {\n    return strings;\n  }\n\n  /** @return enum {string} */\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  /** @return enum {number} */\n  static get numbers() {\n    return numbers;\n  }\n\n  /**\n   * {@see MDCTopAppBarAdapter} for typing information on parameters and return\n   * types.\n   * @return {!MDCTopAppBarAdapter}\n   */\n  static get defaultAdapter() {\n    return /** @type {!MDCTopAppBarAdapter} */ ({\n      hasClass: (/* className: string */) => {},\n      addClass: (/* className: string */) => {},\n      removeClass: (/* className: string */) => {},\n      setStyle: (/* property: string, value: string */) => {},\n      getTopAppBarHeight: () => {},\n      registerNavigationIconInteractionHandler: (/* type: string, handler: EventListener */) => {},\n      deregisterNavigationIconInteractionHandler: (/* type: string, handler: EventListener */) => {},\n      notifyNavigationIconClicked: () => {},\n      registerScrollHandler: (/* handler: EventListener */) => {},\n      deregisterScrollHandler: (/* handler: EventListener */) => {},\n      registerResizeHandler: (/* handler: EventListener */) => {},\n      deregisterResizeHandler: (/* handler: EventListener */) => {},\n      getViewportScrollY: () => /* number */ 0,\n      getTotalActionItems: () => /* number */ 0,\n    });\n  }\n\n  /**\n   * @param {!MDCTopAppBarAdapter} adapter\n   */\n  constructor(/** @type {!MDCTopAppBarAdapter} */ adapter) {\n    super(Object.assign(MDCTopAppBarBaseFoundation.defaultAdapter, adapter));\n\n    this.navClickHandler_ = () => this.adapter_.notifyNavigationIconClicked();\n\n    this.scrollHandler_ = () => {};\n  }\n\n  init() {\n    this.adapter_.registerNavigationIconInteractionHandler('click', this.navClickHandler_);\n  }\n\n  destroy() {\n    this.adapter_.deregisterNavigationIconInteractionHandler('click', this.navClickHandler_);\n  }\n\n  initScrollHandler() {\n    this.adapter_.registerScrollHandler(this.scrollHandler_);\n  }\n\n  destroyScrollHandler() {\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n  }\n}\n\nexport default MDCTopAppBarBaseFoundation;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/top-app-bar/foundation.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {cssClasses} from '../constants';\nimport MDCTopAppBarAdapter from '../adapter';\nimport MDCTopAppBarFoundation from '../foundation';\n\n/**\n * @extends {MDCTopAppBarFoundation<!MDCFixedTopAppBarFoundation>}\n * @final\n */\nclass MDCFixedTopAppBarFoundation extends MDCTopAppBarFoundation {\n  /**\n   * @param {!MDCTopAppBarAdapter} adapter\n   */\n  constructor(adapter) {\n    super(adapter);\n    /** State variable for the previous scroll iteration top app bar state */\n    this.wasScrolled_ = false;\n\n    this.scrollHandler_ = () => this.fixedScrollHandler_();\n  }\n\n  init() {\n    super.init();\n    this.adapter_.registerScrollHandler(this.scrollHandler_);\n  }\n\n  destroy() {\n    super.destroy();\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n  }\n\n  /**\n   * Scroll handler for applying/removing the modifier class\n   * on the fixed top app bar.\n   */\n  fixedScrollHandler_() {\n    const currentScroll = this.adapter_.getViewportScrollY();\n\n    if (currentScroll <= 0) {\n      if (this.wasScrolled_) {\n        this.adapter_.removeClass(cssClasses.FIXED_SCROLLED_CLASS);\n        this.wasScrolled_ = false;\n      }\n    } else {\n      if (!this.wasScrolled_) {\n        this.adapter_.addClass(cssClasses.FIXED_SCROLLED_CLASS);\n        this.wasScrolled_ = true;\n      }\n    }\n  }\n}\n\nexport default MDCFixedTopAppBarFoundation;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/top-app-bar/fixed/foundation.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCTopAppBarAdapter from '../adapter';\nimport MDCTopAppBarBaseFoundation from '../foundation';\nimport {cssClasses} from '../constants';\n\n/**\n * @extends {MDCTopAppBarBaseFoundation<!MDCShortTopAppBarFoundation>}\n * @final\n */\nclass MDCShortTopAppBarFoundation extends MDCTopAppBarBaseFoundation {\n  /**\n   * @param {!MDCTopAppBarAdapter} adapter\n   */\n  constructor(adapter) {\n    super(adapter);\n    // State variable for the current top app bar state\n    this.isCollapsed = false;\n\n    this.scrollHandler_ = () => this.shortAppBarScrollHandler_();\n  }\n\n  init() {\n    super.init();\n    const isAlwaysCollapsed = this.adapter_.hasClass(cssClasses.SHORT_COLLAPSED_CLASS);\n\n    if (this.adapter_.getTotalActionItems() > 0) {\n      this.adapter_.addClass(cssClasses.SHORT_HAS_ACTION_ITEM_CLASS);\n    }\n\n    if (!isAlwaysCollapsed) {\n      this.adapter_.registerScrollHandler(this.scrollHandler_);\n      this.shortAppBarScrollHandler_();\n    }\n  }\n\n  destroy() {\n    super.destroy();\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n  }\n\n\n  /**\n   * Scroll handler for applying/removing the collapsed modifier class\n   * on the short top app bar.\n   * @private\n   */\n  shortAppBarScrollHandler_() {\n    const currentScroll = this.adapter_.getViewportScrollY();\n\n    if (currentScroll <= 0) {\n      if (this.isCollapsed) {\n        this.adapter_.removeClass(cssClasses.SHORT_COLLAPSED_CLASS);\n        this.isCollapsed = false;\n      }\n    } else {\n      if (!this.isCollapsed) {\n        this.adapter_.addClass(cssClasses.SHORT_COLLAPSED_CLASS);\n        this.isCollapsed = true;\n      }\n    }\n  }\n}\n\nexport default MDCShortTopAppBarFoundation;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/top-app-bar/short/foundation.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCTopAppBarAdapter from '../adapter';\nimport MDCTopAppBarBaseFoundation from '../foundation';\nimport {numbers} from '../constants';\n\nconst INITIAL_VALUE = 0;\n/**\n * @extends {MDCTopAppBarBaseFoundation<!MDCTopAppBarFoundation>}\n * @final\n */\nclass MDCTopAppBarFoundation extends MDCTopAppBarBaseFoundation {\n  /**\n   * @param {!MDCTopAppBarAdapter} adapter\n   */\n  constructor(adapter) {\n    super(adapter);\n    /**\n     * Used for diffs of current scroll position vs previous scroll position\n     * @private {number}\n     */\n    this.lastScrollPosition_ = this.adapter_.getViewportScrollY();\n\n    /**\n     * Used to verify when the top app bar is completely showing or completely hidden\n     * @private {number}\n     */\n    this.topAppBarHeight_ = this.adapter_.getTopAppBarHeight();\n\n    /**\n     * wasDocked_ is used to indicate if the top app bar was docked in the previous\n     * scroll handler iteration.\n     * @private {boolean}\n     */\n    this.wasDocked_ = true;\n\n    /**\n     * isDockedShowing_ is used to indicate if the top app bar is docked in the fully\n     * shown position.\n     * @private {boolean}\n     */\n    this.isDockedShowing_ = true;\n\n    /**\n     * Variable for current scroll position of the top app bar\n     * @private {number}\n     */\n    this.currentAppBarOffsetTop_ = 0;\n\n    /**\n     * Used to prevent the top app bar from being scrolled out of view during resize events\n     * @private {boolean} */\n    this.isCurrentlyBeingResized_ = false;\n\n    /**\n     * The timeout that's used to throttle the resize events\n     * @private {number}\n     */\n    this.resizeThrottleId_ = INITIAL_VALUE;\n\n    /**\n     * The timeout that's used to debounce toggling the isCurrentlyBeingResized_ variable after a resize\n     * @private {number}\n     */\n    this.resizeDebounceId_ = INITIAL_VALUE;\n\n    this.scrollHandler_ = () => this.topAppBarScrollHandler_();\n    this.resizeHandler_ = () => this.topAppBarResizeHandler_();\n  }\n\n  init() {\n    super.init();\n    this.adapter_.registerScrollHandler(this.scrollHandler_);\n    this.adapter_.registerResizeHandler(this.resizeHandler_);\n  }\n\n  destroy() {\n    super.destroy();\n    this.adapter_.deregisterScrollHandler(this.scrollHandler_);\n    this.adapter_.deregisterResizeHandler(this.resizeHandler_);\n    this.adapter_.setStyle('top', '');\n  }\n\n  /**\n   * Function to determine if the DOM needs to update.\n   * @return {boolean}\n   * @private\n   */\n  checkForUpdate_() {\n    const offscreenBoundaryTop = -this.topAppBarHeight_;\n    const hasAnyPixelsOffscreen = this.currentAppBarOffsetTop_ < 0;\n    const hasAnyPixelsOnscreen = this.currentAppBarOffsetTop_ > offscreenBoundaryTop;\n    const partiallyShowing = hasAnyPixelsOffscreen && hasAnyPixelsOnscreen;\n\n    // If it's partially showing, it can't be docked.\n    if (partiallyShowing) {\n      this.wasDocked_ = false;\n    } else {\n      // Not previously docked and not partially showing, it's now docked.\n      if (!this.wasDocked_) {\n        this.wasDocked_ = true;\n        return true;\n      } else if (this.isDockedShowing_ !== hasAnyPixelsOnscreen) {\n        this.isDockedShowing_ = hasAnyPixelsOnscreen;\n        return true;\n      }\n    }\n\n    return partiallyShowing;\n  }\n\n  /**\n   * Function to move the top app bar if needed.\n   * @private\n   */\n  moveTopAppBar_() {\n    if (this.checkForUpdate_()) {\n      // Once the top app bar is fully hidden we use the max potential top app bar height as our offset\n      // so the top app bar doesn't show if the window resizes and the new height > the old height.\n      let offset = this.currentAppBarOffsetTop_;\n      if (Math.abs(offset) >= this.topAppBarHeight_) {\n        offset = -numbers.MAX_TOP_APP_BAR_HEIGHT;\n      }\n\n      this.adapter_.setStyle('top', offset + 'px');\n    }\n  }\n\n  /**\n   * Scroll handler for the default scroll behavior of the top app bar.\n   * @private\n   */\n  topAppBarScrollHandler_() {\n    const currentScrollPosition = Math.max(this.adapter_.getViewportScrollY(), 0);\n    const diff = currentScrollPosition - this.lastScrollPosition_;\n    this.lastScrollPosition_ = currentScrollPosition;\n\n    // If the window is being resized the lastScrollPosition_ needs to be updated but the\n    // current scroll of the top app bar should stay in the same position.\n    if (!this.isCurrentlyBeingResized_) {\n      this.currentAppBarOffsetTop_ -= diff;\n\n      if (this.currentAppBarOffsetTop_ > 0) {\n        this.currentAppBarOffsetTop_ = 0;\n      } else if (Math.abs(this.currentAppBarOffsetTop_) > this.topAppBarHeight_) {\n        this.currentAppBarOffsetTop_ = -this.topAppBarHeight_;\n      }\n\n      this.moveTopAppBar_();\n    }\n  }\n\n  /**\n   * Top app bar resize handler that throttle/debounce functions that execute updates.\n   * @private\n   */\n  topAppBarResizeHandler_() {\n    // Throttle resize events 10 p/s\n    if (!this.resizeThrottleId_) {\n      this.resizeThrottleId_ = setTimeout(() => {\n        this.resizeThrottleId_ = INITIAL_VALUE;\n        this.throttledResizeHandler_();\n      }, numbers.DEBOUNCE_THROTTLE_RESIZE_TIME_MS);\n    }\n\n    this.isCurrentlyBeingResized_ = true;\n\n    if (this.resizeDebounceId_) {\n      clearTimeout(this.resizeDebounceId_);\n    }\n\n    this.resizeDebounceId_ = setTimeout(() => {\n      this.topAppBarScrollHandler_();\n      this.isCurrentlyBeingResized_ = false;\n      this.resizeDebounceId_ = INITIAL_VALUE;\n    }, numbers.DEBOUNCE_THROTTLE_RESIZE_TIME_MS);\n  }\n\n  /**\n   * Throttled function that updates the top app bar scrolled values if the\n   * top app bar height changes.\n   * @private\n   */\n  throttledResizeHandler_() {\n    const currentHeight = this.adapter_.getTopAppBarHeight();\n    if (this.topAppBarHeight_ !== currentHeight) {\n      this.wasDocked_ = false;\n\n      // Since the top app bar has a different height depending on the screen width, this\n      // will ensure that the top app bar remains in the correct location if\n      // completely hidden and a resize makes the top app bar a different height.\n      this.currentAppBarOffsetTop_ -= this.topAppBarHeight_ - currentHeight;\n      this.topAppBarHeight_ = currentHeight;\n    }\n    this.topAppBarScrollHandler_();\n  }\n}\n\nexport default MDCTopAppBarFoundation;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/top-app-bar/standard/foundation.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCTopAppBarAdapter from './adapter';\nimport MDCComponent from '@material/base/component';\nimport {MDCRipple} from '@material/ripple/index';\nimport {cssClasses, strings} from './constants';\nimport MDCTopAppBarBaseFoundation from './foundation';\nimport MDCFixedTopAppBarFoundation from './fixed/foundation';\nimport MDCShortTopAppBarFoundation from './short/foundation';\nimport MDCTopAppBarFoundation from './standard/foundation';\n\n/**\n * @extends {MDCComponent<!MDCTopAppBarBaseFoundation>}\n * @final\n */\nclass MDCTopAppBar extends MDCComponent {\n  /**\n   * @param {...?} args\n   */\n  constructor(...args) {\n    super(...args);\n    /** @private {?Element} */\n    this.navIcon_;\n    /** @type {?Array<MDCRipple>} */\n    this.iconRipples_;\n    /** @type {Object} */\n    this.scrollTarget_;\n  }\n\n  initialize(\n    rippleFactory = (el) => MDCRipple.attachTo(el)) {\n    this.navIcon_ = this.root_.querySelector(strings.NAVIGATION_ICON_SELECTOR);\n\n    // Get all icons in the toolbar and instantiate the ripples\n    const icons = [].slice.call(this.root_.querySelectorAll(strings.ACTION_ITEM_SELECTOR));\n    if (this.navIcon_) {\n      icons.push(this.navIcon_);\n    }\n\n    this.iconRipples_ = icons.map((icon) => {\n      const ripple = rippleFactory(icon);\n      ripple.unbounded = true;\n      return ripple;\n    });\n  }\n\n  destroy() {\n    this.iconRipples_.forEach((iconRipple) => iconRipple.destroy());\n    super.destroy();\n  }\n\n  setScrollTarget(target) {\n    this.foundation_.destroyScrollHandler();\n    this.scrollTarget_ = target;\n    this.foundation_.initScrollHandler();\n  }\n\n  /**\n   * @param {!Element} root\n   * @return {!MDCTopAppBar}\n   */\n  static attachTo(root) {\n    return new MDCTopAppBar(root);\n  }\n\n  /**\n   * @return {!MDCTopAppBarBaseFoundation}\n   */\n  getDefaultFoundation() {\n    /** @type {!MDCTopAppBarAdapter} */\n    const adapter = /** @type {!MDCTopAppBarAdapter} */ (Object.assign({\n      hasClass: (className) => this.root_.classList.contains(className),\n      addClass: (className) => this.root_.classList.add(className),\n      removeClass: (className) => this.root_.classList.remove(className),\n      setStyle: (property, value) => this.root_.style.setProperty(property, value),\n      getTopAppBarHeight: () => this.root_.clientHeight,\n      registerNavigationIconInteractionHandler: (evtType, handler) => {\n        if (this.navIcon_) {\n          this.navIcon_.addEventListener(evtType, handler);\n        }\n      },\n      deregisterNavigationIconInteractionHandler: (evtType, handler) => {\n        if (this.navIcon_) {\n          this.navIcon_.removeEventListener(evtType, handler);\n        }\n      },\n      notifyNavigationIconClicked: () => {\n        this.emit(strings.NAVIGATION_EVENT, {});\n      },\n      registerScrollHandler: (handler) => this.scrollTarget_.addEventListener('scroll', handler),\n      deregisterScrollHandler: (handler) => this.scrollTarget_.removeEventListener('scroll', handler),\n      registerResizeHandler: (handler) => window.addEventListener('resize', handler),\n      deregisterResizeHandler: (handler) => window.removeEventListener('resize', handler),\n      getViewportScrollY: () =>\n        this.scrollTarget_[this.scrollTarget_ === window ? 'pageYOffset' : 'scrollTop'],\n      getTotalActionItems: () =>\n        this.root_.querySelectorAll(strings.ACTION_ITEM_SELECTOR).length,\n    })\n    );\n\n    this.scrollTarget_ = window;\n\n    /** @type {!MDCTopAppBarBaseFoundation} */\n    let foundation;\n    if (this.root_.classList.contains(cssClasses.SHORT_CLASS)) {\n      foundation = new MDCShortTopAppBarFoundation(adapter);\n    } else if (this.root_.classList.contains(cssClasses.FIXED_CLASS)) {\n      foundation = new MDCFixedTopAppBarFoundation(adapter);\n    } else {\n      foundation = new MDCTopAppBarFoundation(adapter);\n    }\n\n    return foundation;\n  }\n}\n\nexport {MDCTopAppBar, MDCTopAppBarBaseFoundation,\n  MDCTopAppBarFoundation, MDCFixedTopAppBarFoundation,\n  MDCShortTopAppBarFoundation};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/top-app-bar/index.js","module.exports = function (done, value) {\n  return { value: value, done: !!done };\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_iter-step.js","exports.f = {}.propertyIsEnumerable;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-pie.js","module.exports = function (bitmap, value) {\n  return {\n    enumerable: !(bitmap & 1),\n    configurable: !(bitmap & 2),\n    writable: !(bitmap & 4),\n    value: value\n  };\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_property-desc.js","require('./_wks-define')('asyncIterator');\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es7.symbol.async-iterator.js","var def = require('./_object-dp').f;\nvar has = require('./_has');\nvar TAG = require('./_wks')('toStringTag');\n\nmodule.exports = function (it, tag, stat) {\n  if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag });\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_set-to-string-tag.js","// false -> Array#indexOf\n// true  -> Array#includes\nvar toIObject = require('./_to-iobject');\nvar toLength = require('./_to-length');\nvar toAbsoluteIndex = require('./_to-absolute-index');\nmodule.exports = function (IS_INCLUDES) {\n  return function ($this, el, fromIndex) {\n    var O = toIObject($this);\n    var length = toLength(O.length);\n    var index = toAbsoluteIndex(fromIndex, length);\n    var value;\n    // Array#includes uses SameValueZero equality algorithm\n    // eslint-disable-next-line no-self-compare\n    if (IS_INCLUDES && el != el) while (length > index) {\n      value = O[index++];\n      // eslint-disable-next-line no-self-compare\n      if (value != value) return true;\n    // Array#indexOf ignores holes, Array#includes - not\n    } else for (;length > index; index++) if (IS_INCLUDES || index in O) {\n      if (O[index] === el) return IS_INCLUDES || index || 0;\n    } return !IS_INCLUDES && -1;\n  };\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_array-includes.js","function _defineProperties(target, props) {\n  for (var i = 0; i < props.length; i++) {\n    var descriptor = props[i];\n    descriptor.enumerable = descriptor.enumerable || false;\n    descriptor.configurable = true;\n    if (\"value\" in descriptor) descriptor.writable = true;\n    Object.defineProperty(target, descriptor.key, descriptor);\n  }\n}\n\nfunction _createClass(Constructor, protoProps, staticProps) {\n  if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n  if (staticProps) _defineProperties(Constructor, staticProps);\n  return Constructor;\n}\n\nmodule.exports = _createClass;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/createClass.js","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = _default;\n\nfunction _default(prop) {\n  return \"mdc-theme--\".concat(prop, \"-bg\");\n}\n//# sourceMappingURL=generateThemeClass.js.map\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-material-components/themeUtils/generateThemeClass.js","// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)\nvar has = require('./_has');\nvar toObject = require('./_to-object');\nvar IE_PROTO = require('./_shared-key')('IE_PROTO');\nvar ObjectProto = Object.prototype;\n\nmodule.exports = Object.getPrototypeOf || function (O) {\n  O = toObject(O);\n  if (has(O, IE_PROTO)) return O[IE_PROTO];\n  if (typeof O.constructor == 'function' && O instanceof O.constructor) {\n    return O.constructor.prototype;\n  } return O instanceof Object ? ObjectProto : null;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-gpo.js","var toInteger = require('./_to-integer');\nvar max = Math.max;\nvar min = Math.min;\nmodule.exports = function (index, length) {\n  index = toInteger(index);\n  return index < 0 ? max(index + length, 0) : min(index, length);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_to-absolute-index.js","var global = require('./_global');\nvar core = require('./_core');\nvar hide = require('./_hide');\nvar redefine = require('./_redefine');\nvar ctx = require('./_ctx');\nvar PROTOTYPE = 'prototype';\n\nvar $export = function (type, name, source) {\n  var IS_FORCED = type & $export.F;\n  var IS_GLOBAL = type & $export.G;\n  var IS_STATIC = type & $export.S;\n  var IS_PROTO = type & $export.P;\n  var IS_BIND = type & $export.B;\n  var target = IS_GLOBAL ? global : IS_STATIC ? global[name] || (global[name] = {}) : (global[name] || {})[PROTOTYPE];\n  var exports = IS_GLOBAL ? core : core[name] || (core[name] = {});\n  var expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {});\n  var key, own, out, exp;\n  if (IS_GLOBAL) source = name;\n  for (key in source) {\n    // contains in native\n    own = !IS_FORCED && target && target[key] !== undefined;\n    // export native or passed\n    out = (own ? target : source)[key];\n    // bind timers to global for call from export context\n    exp = IS_BIND && own ? ctx(out, global) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;\n    // extend global\n    if (target) redefine(target, key, out, type & $export.U);\n    // export\n    if (exports[key] != out) hide(exports, key, exp);\n    if (IS_PROTO && expProto[key] != out) expProto[key] = out;\n  }\n};\nglobal.core = core;\n// type bitmap\n$export.F = 1;   // forced\n$export.G = 2;   // global\n$export.S = 4;   // static\n$export.P = 8;   // proto\n$export.B = 16;  // bind\n$export.W = 32;  // wrap\n$export.U = 64;  // safe\n$export.R = 128; // real proto method for `library`\nmodule.exports = $export;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_export.js","'use strict';\n// 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined)\nvar $export = require('./_export');\nvar $find = require('./_array-methods')(6);\nvar KEY = 'findIndex';\nvar forced = true;\n// Shouldn't skip holes\nif (KEY in []) Array(1)[KEY](function () { forced = false; });\n$export($export.P + $export.F * forced, 'Array', {\n  findIndex: function findIndex(callbackfn /* , that = undefined */) {\n    return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n  }\n});\nrequire('./_add-to-unscopables')(KEY);\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.array.find-index.js","// to indexed object, toObject with fallback for non-array-like ES3 strings\nvar IObject = require('./_iobject');\nvar defined = require('./_defined');\nmodule.exports = function (it) {\n  return IObject(defined(it));\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_to-iobject.js","function _interopRequireDefault(obj) {\n  return obj && obj.__esModule ? obj : {\n    default: obj\n  };\n}\n\nmodule.exports = _interopRequireDefault;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/interopRequireDefault.js","// getting tag from 19.1.3.6 Object.prototype.toString()\nvar cof = require('./_cof');\nvar TAG = require('./_wks')('toStringTag');\n// ES3 wrong here\nvar ARG = cof(function () { return arguments; }()) == 'Arguments';\n\n// fallback for IE11 Script Access Denied error\nvar tryGet = function (it, key) {\n  try {\n    return it[key];\n  } catch (e) { /* empty */ }\n};\n\nmodule.exports = function (it) {\n  var O, T, B;\n  return it === undefined ? 'Undefined' : it === null ? 'Null'\n    // @@toStringTag case\n    : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T\n    // builtinTag case\n    : ARG ? cof(O)\n    // ES3 arguments fallback\n    : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_classof.js","module.exports = function(el, options) {\n  options = options || {};\n\n  var elementDocument = el.ownerDocument || el;\n  var basicTabbables = [];\n  var orderedTabbables = [];\n\n  // A node is \"available\" if\n  // - it's computed style\n  var isUnavailable = createIsUnavailable(elementDocument);\n\n  var candidateSelectors = [\n    'input',\n    'select',\n    'a[href]',\n    'textarea',\n    'button',\n    '[tabindex]',\n  ];\n\n  var candidates = el.querySelectorAll(candidateSelectors.join(','));\n\n  if (options.includeContainer) {\n    var matches = Element.prototype.matches || Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;\n\n    if (\n      candidateSelectors.some(function(candidateSelector) {\n        return matches.call(el, candidateSelector);\n      })\n    ) {\n      candidates = Array.prototype.slice.apply(candidates);\n      candidates.unshift(el);\n    }\n  }\n\n  var candidate, candidateIndexAttr, candidateIndex;\n  for (var i = 0, l = candidates.length; i < l; i++) {\n    candidate = candidates[i];\n    candidateIndexAttr = parseInt(candidate.getAttribute('tabindex'), 10)\n    candidateIndex = isNaN(candidateIndexAttr) ? candidate.tabIndex : candidateIndexAttr;\n\n    if (\n      candidateIndex < 0\n      || (candidate.tagName === 'INPUT' && candidate.type === 'hidden')\n      || candidate.disabled\n      || isUnavailable(candidate, elementDocument)\n    ) {\n      continue;\n    }\n\n    if (candidateIndex === 0) {\n      basicTabbables.push(candidate);\n    } else {\n      orderedTabbables.push({\n        index: i,\n        tabIndex: candidateIndex,\n        node: candidate,\n      });\n    }\n  }\n\n  var tabbableNodes = orderedTabbables\n    .sort(function(a, b) {\n      return a.tabIndex === b.tabIndex ? a.index - b.index : a.tabIndex - b.tabIndex;\n    })\n    .map(function(a) {\n      return a.node\n    });\n\n  Array.prototype.push.apply(tabbableNodes, basicTabbables);\n\n  return tabbableNodes;\n}\n\nfunction createIsUnavailable(elementDocument) {\n  // Node cache must be refreshed on every check, in case\n  // the content of the element has changed\n  var isOffCache = [];\n\n  // \"off\" means `display: none;`, as opposed to \"hidden\",\n  // which means `visibility: hidden;`. getComputedStyle\n  // accurately reflects visiblity in context but not\n  // \"off\" state, so we need to recursively check parents.\n\n  function isOff(node, nodeComputedStyle) {\n    if (node === elementDocument.documentElement) return false;\n\n    // Find the cached node (Array.prototype.find not available in IE9)\n    for (var i = 0, length = isOffCache.length; i < length; i++) {\n      if (isOffCache[i][0] === node) return isOffCache[i][1];\n    }\n\n    nodeComputedStyle = nodeComputedStyle || elementDocument.defaultView.getComputedStyle(node);\n\n    var result = false;\n\n    if (nodeComputedStyle.display === 'none') {\n      result = true;\n    } else if (node.parentNode) {\n      result = isOff(node.parentNode);\n    }\n\n    isOffCache.push([node, result]);\n\n    return result;\n  }\n\n  return function isUnavailable(node) {\n    if (node === elementDocument.documentElement) return false;\n\n    var computedStyle = elementDocument.defaultView.getComputedStyle(node);\n\n    if (isOff(node, computedStyle)) return true;\n\n    return computedStyle.visibility === 'hidden';\n  }\n}\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/tabbable/index.js","/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A container for all of the Logger instances\r\n */\r\nvar instances = [];\r\n/**\r\n * The JS SDK supports 5 log levels and also allows a user the ability to\r\n * silence the logs altogether.\r\n *\r\n * The order is a follows:\r\n * DEBUG < VERBOSE < INFO < WARN < ERROR\r\n *\r\n * All of the log types above the current log level will be captured (i.e. if\r\n * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and\r\n * `VERBOSE` logs will not)\r\n */\r\nvar LogLevel;\r\n(function (LogLevel) {\r\n    LogLevel[LogLevel[\"DEBUG\"] = 0] = \"DEBUG\";\r\n    LogLevel[LogLevel[\"VERBOSE\"] = 1] = \"VERBOSE\";\r\n    LogLevel[LogLevel[\"INFO\"] = 2] = \"INFO\";\r\n    LogLevel[LogLevel[\"WARN\"] = 3] = \"WARN\";\r\n    LogLevel[LogLevel[\"ERROR\"] = 4] = \"ERROR\";\r\n    LogLevel[LogLevel[\"SILENT\"] = 5] = \"SILENT\";\r\n})(LogLevel || (LogLevel = {}));\r\n/**\r\n * The default log level\r\n */\r\nvar defaultLogLevel = LogLevel.INFO;\r\n/**\r\n * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR\r\n * messages on to their corresponding console counterparts (if the log method\r\n * is supported by the current log level)\r\n */\r\nvar defaultLogHandler = function (instance, logType) {\r\n    var args = [];\r\n    for (var _i = 2; _i < arguments.length; _i++) {\r\n        args[_i - 2] = arguments[_i];\r\n    }\r\n    if (logType < instance.logLevel)\r\n        return;\r\n    var now = new Date().toISOString();\r\n    switch (logType) {\r\n        /**\r\n         * By default, `console.debug` is not displayed in the developer console (in\r\n         * chrome). To avoid forcing users to have to opt-in to these logs twice\r\n         * (i.e. once for firebase, and once in the console), we are sending `DEBUG`\r\n         * logs to the `console.log` function.\r\n         */\r\n        case LogLevel.DEBUG:\r\n            console.log.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\r\n            break;\r\n        case LogLevel.VERBOSE:\r\n            console.log.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\r\n            break;\r\n        case LogLevel.INFO:\r\n            console.info.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\r\n            break;\r\n        case LogLevel.WARN:\r\n            console.warn.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\r\n            break;\r\n        case LogLevel.ERROR:\r\n            console.error.apply(console, [\"[\" + now + \"]  \" + instance.name + \":\"].concat(args));\r\n            break;\r\n        default:\r\n            throw new Error(\"Attempted to log a message with an invalid logType (value: \" + logType + \")\");\r\n    }\r\n};\r\nvar Logger = /** @class */ (function () {\r\n    /**\r\n     * Gives you an instance of a Logger to capture messages according to\r\n     * Firebase's logging scheme.\r\n     *\r\n     * @param name The name that the logs will be associated with\r\n     */\r\n    function Logger(name) {\r\n        this.name = name;\r\n        /**\r\n         * The log level of the given Logger instance.\r\n         */\r\n        this._logLevel = defaultLogLevel;\r\n        /**\r\n         * The log handler for the Logger instance.\r\n         */\r\n        this._logHandler = defaultLogHandler;\r\n        /**\r\n         * Capture the current instance for later use\r\n         */\r\n        instances.push(this);\r\n    }\r\n    Object.defineProperty(Logger.prototype, \"logLevel\", {\r\n        get: function () {\r\n            return this._logLevel;\r\n        },\r\n        set: function (val) {\r\n            if (!(val in LogLevel)) {\r\n                throw new TypeError('Invalid value assigned to `logLevel`');\r\n            }\r\n            this._logLevel = val;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(Logger.prototype, \"logHandler\", {\r\n        get: function () {\r\n            return this._logHandler;\r\n        },\r\n        set: function (val) {\r\n            if (typeof val !== 'function') {\r\n                throw new TypeError('Value assigned to `logHandler` must be a function');\r\n            }\r\n            this._logHandler = val;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    /**\r\n     * The functions below are all based on the `console` interface\r\n     */\r\n    Logger.prototype.debug = function () {\r\n        var args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            args[_i] = arguments[_i];\r\n        }\r\n        this._logHandler.apply(this, [this, LogLevel.DEBUG].concat(args));\r\n    };\r\n    Logger.prototype.log = function () {\r\n        var args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            args[_i] = arguments[_i];\r\n        }\r\n        this._logHandler.apply(this, [this, LogLevel.VERBOSE].concat(args));\r\n    };\r\n    Logger.prototype.info = function () {\r\n        var args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            args[_i] = arguments[_i];\r\n        }\r\n        this._logHandler.apply(this, [this, LogLevel.INFO].concat(args));\r\n    };\r\n    Logger.prototype.warn = function () {\r\n        var args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            args[_i] = arguments[_i];\r\n        }\r\n        this._logHandler.apply(this, [this, LogLevel.WARN].concat(args));\r\n    };\r\n    Logger.prototype.error = function () {\r\n        var args = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            args[_i] = arguments[_i];\r\n        }\r\n        this._logHandler.apply(this, [this, LogLevel.ERROR].concat(args));\r\n    };\r\n    return Logger;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction setLogLevel(level) {\r\n    instances.forEach(function (inst) {\r\n        inst.logLevel = level;\r\n    });\r\n}\n\nexport { setLogLevel, Logger, LogLevel };\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/logger/dist/index.esm.js","var store = require('./_shared')('wks');\nvar uid = require('./_uid');\nvar Symbol = require('./_global').Symbol;\nvar USE_SYMBOL = typeof Symbol == 'function';\n\nvar $exports = module.exports = function (name) {\n  return store[name] || (store[name] =\n    USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name));\n};\n\n$exports.store = store;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_wks.js","require('../../modules/es6.string.iterator');\nrequire('../../modules/web.dom.iterable');\nmodule.exports = require('../../modules/_wks-ext').f('iterator');\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/fn/symbol/iterator.js","function _getPrototypeOf(o) {\n  module.exports = _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {\n    return o.__proto__ || Object.getPrototypeOf(o);\n  };\n  return _getPrototypeOf(o);\n}\n\nmodule.exports = _getPrototypeOf;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/getPrototypeOf.js","// 0 -> Array#forEach\n// 1 -> Array#map\n// 2 -> Array#filter\n// 3 -> Array#some\n// 4 -> Array#every\n// 5 -> Array#find\n// 6 -> Array#findIndex\nvar ctx = require('./_ctx');\nvar IObject = require('./_iobject');\nvar toObject = require('./_to-object');\nvar toLength = require('./_to-length');\nvar asc = require('./_array-species-create');\nmodule.exports = function (TYPE, $create) {\n  var IS_MAP = TYPE == 1;\n  var IS_FILTER = TYPE == 2;\n  var IS_SOME = TYPE == 3;\n  var IS_EVERY = TYPE == 4;\n  var IS_FIND_INDEX = TYPE == 6;\n  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;\n  var create = $create || asc;\n  return function ($this, callbackfn, that) {\n    var O = toObject($this);\n    var self = IObject(O);\n    var f = ctx(callbackfn, that, 3);\n    var length = toLength(self.length);\n    var index = 0;\n    var result = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;\n    var val, res;\n    for (;length > index; index++) if (NO_HOLES || index in self) {\n      val = self[index];\n      res = f(val, index, O);\n      if (TYPE) {\n        if (IS_MAP) result[index] = res;   // map\n        else if (res) switch (TYPE) {\n          case 3: return true;             // some\n          case 5: return val;              // find\n          case 6: return index;            // findIndex\n          case 2: result.push(val);        // filter\n        } else if (IS_EVERY) return false; // every\n      }\n    }\n    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result;\n  };\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_array-methods.js","var core = module.exports = { version: '2.5.5' };\nif (typeof __e == 'number') __e = core; // eslint-disable-line no-undef\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_core.js","// helper for String#{startsWith, endsWith, includes}\nvar isRegExp = require('./_is-regexp');\nvar defined = require('./_defined');\n\nmodule.exports = function (that, searchString, NAME) {\n  if (isRegExp(searchString)) throw TypeError('String#' + NAME + \" doesn't accept regex!\");\n  return String(defined(that));\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_string-context.js","'use strict';\n// 19.1.2.1 Object.assign(target, source, ...)\nvar getKeys = require('./_object-keys');\nvar gOPS = require('./_object-gops');\nvar pIE = require('./_object-pie');\nvar toObject = require('./_to-object');\nvar IObject = require('./_iobject');\nvar $assign = Object.assign;\n\n// should work with symbols and should have deterministic property order (V8 bug)\nmodule.exports = !$assign || require('./_fails')(function () {\n  var A = {};\n  var B = {};\n  // eslint-disable-next-line no-undef\n  var S = Symbol();\n  var K = 'abcdefghijklmnopqrst';\n  A[S] = 7;\n  K.split('').forEach(function (k) { B[k] = k; });\n  return $assign({}, A)[S] != 7 || Object.keys($assign({}, B)).join('') != K;\n}) ? function assign(target, source) { // eslint-disable-line no-unused-vars\n  var T = toObject(target);\n  var aLen = arguments.length;\n  var index = 1;\n  var getSymbols = gOPS.f;\n  var isEnum = pIE.f;\n  while (aLen > index) {\n    var S = IObject(arguments[index++]);\n    var keys = getSymbols ? getKeys(S).concat(getSymbols(S)) : getKeys(S);\n    var length = keys.length;\n    var j = 0;\n    var key;\n    while (length > j) if (isEnum.call(S, key = keys[j++])) T[key] = S[key];\n  } return T;\n} : $assign;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-assign.js","// 7.1.13 ToObject(argument)\nvar defined = require('./_defined');\nmodule.exports = function (it) {\n  return Object(defined(it));\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_to-object.js","require('../../modules/es6.object.assign');\nmodule.exports = require('../../modules/_core').Object.assign;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/fn/object/assign.js","// 7.1.1 ToPrimitive(input [, PreferredType])\nvar isObject = require('./_is-object');\n// instead of the ES6 spec version, we didn't implement @@toPrimitive case\n// and the second argument - flag - preferred type is a string\nmodule.exports = function (it, S) {\n  if (!isObject(it)) return it;\n  var fn, val;\n  if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n  if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val;\n  if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n  throw TypeError(\"Can't convert object to primitive value\");\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_to-primitive.js","module.exports = false;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_library.js","'use strict';\n\nfunction _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\nrequire('@firebase/polyfill');\nvar firebase = _interopDefault(require('@firebase/app'));\n\n/**\r\n * @license\r\n * Copyright 2018 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n\nmodule.exports = firebase;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/firebase/app/dist/index.cjs.js","'use strict';\n\n// Store setTimeout reference so promise-polyfill will be unaffected by\n// other code modifying setTimeout (like sinon.useFakeTimers())\nvar setTimeoutFunc = setTimeout;\n\nfunction noop() {}\n\n// Polyfill for Function.prototype.bind\nfunction bind(fn, thisArg) {\n  return function() {\n    fn.apply(thisArg, arguments);\n  };\n}\n\nfunction Promise(fn) {\n  if (!(this instanceof Promise))\n    throw new TypeError('Promises must be constructed via new');\n  if (typeof fn !== 'function') throw new TypeError('not a function');\n  this._state = 0;\n  this._handled = false;\n  this._value = undefined;\n  this._deferreds = [];\n\n  doResolve(fn, this);\n}\n\nfunction handle(self, deferred) {\n  while (self._state === 3) {\n    self = self._value;\n  }\n  if (self._state === 0) {\n    self._deferreds.push(deferred);\n    return;\n  }\n  self._handled = true;\n  Promise._immediateFn(function() {\n    var cb = self._state === 1 ? deferred.onFulfilled : deferred.onRejected;\n    if (cb === null) {\n      (self._state === 1 ? resolve : reject)(deferred.promise, self._value);\n      return;\n    }\n    var ret;\n    try {\n      ret = cb(self._value);\n    } catch (e) {\n      reject(deferred.promise, e);\n      return;\n    }\n    resolve(deferred.promise, ret);\n  });\n}\n\nfunction resolve(self, newValue) {\n  try {\n    // Promise Resolution Procedure: https://github.com/promises-aplus/promises-spec#the-promise-resolution-procedure\n    if (newValue === self)\n      throw new TypeError('A promise cannot be resolved with itself.');\n    if (\n      newValue &&\n      (typeof newValue === 'object' || typeof newValue === 'function')\n    ) {\n      var then = newValue.then;\n      if (newValue instanceof Promise) {\n        self._state = 3;\n        self._value = newValue;\n        finale(self);\n        return;\n      } else if (typeof then === 'function') {\n        doResolve(bind(then, newValue), self);\n        return;\n      }\n    }\n    self._state = 1;\n    self._value = newValue;\n    finale(self);\n  } catch (e) {\n    reject(self, e);\n  }\n}\n\nfunction reject(self, newValue) {\n  self._state = 2;\n  self._value = newValue;\n  finale(self);\n}\n\nfunction finale(self) {\n  if (self._state === 2 && self._deferreds.length === 0) {\n    Promise._immediateFn(function() {\n      if (!self._handled) {\n        Promise._unhandledRejectionFn(self._value);\n      }\n    });\n  }\n\n  for (var i = 0, len = self._deferreds.length; i < len; i++) {\n    handle(self, self._deferreds[i]);\n  }\n  self._deferreds = null;\n}\n\nfunction Handler(onFulfilled, onRejected, promise) {\n  this.onFulfilled = typeof onFulfilled === 'function' ? onFulfilled : null;\n  this.onRejected = typeof onRejected === 'function' ? onRejected : null;\n  this.promise = promise;\n}\n\n/**\n * Take a potentially misbehaving resolver function and make sure\n * onFulfilled and onRejected are only called once.\n *\n * Makes no guarantees about asynchrony.\n */\nfunction doResolve(fn, self) {\n  var done = false;\n  try {\n    fn(\n      function(value) {\n        if (done) return;\n        done = true;\n        resolve(self, value);\n      },\n      function(reason) {\n        if (done) return;\n        done = true;\n        reject(self, reason);\n      }\n    );\n  } catch (ex) {\n    if (done) return;\n    done = true;\n    reject(self, ex);\n  }\n}\n\nPromise.prototype['catch'] = function(onRejected) {\n  return this.then(null, onRejected);\n};\n\nPromise.prototype.then = function(onFulfilled, onRejected) {\n  var prom = new this.constructor(noop);\n\n  handle(this, new Handler(onFulfilled, onRejected, prom));\n  return prom;\n};\n\nPromise.prototype['finally'] = function(callback) {\n  var constructor = this.constructor;\n  return this.then(\n    function(value) {\n      return constructor.resolve(callback()).then(function() {\n        return value;\n      });\n    },\n    function(reason) {\n      return constructor.resolve(callback()).then(function() {\n        return constructor.reject(reason);\n      });\n    }\n  );\n};\n\nPromise.all = function(arr) {\n  return new Promise(function(resolve, reject) {\n    if (!arr || typeof arr.length === 'undefined')\n      throw new TypeError('Promise.all accepts an array');\n    var args = Array.prototype.slice.call(arr);\n    if (args.length === 0) return resolve([]);\n    var remaining = args.length;\n\n    function res(i, val) {\n      try {\n        if (val && (typeof val === 'object' || typeof val === 'function')) {\n          var then = val.then;\n          if (typeof then === 'function') {\n            then.call(\n              val,\n              function(val) {\n                res(i, val);\n              },\n              reject\n            );\n            return;\n          }\n        }\n        args[i] = val;\n        if (--remaining === 0) {\n          resolve(args);\n        }\n      } catch (ex) {\n        reject(ex);\n      }\n    }\n\n    for (var i = 0; i < args.length; i++) {\n      res(i, args[i]);\n    }\n  });\n};\n\nPromise.resolve = function(value) {\n  if (value && typeof value === 'object' && value.constructor === Promise) {\n    return value;\n  }\n\n  return new Promise(function(resolve) {\n    resolve(value);\n  });\n};\n\nPromise.reject = function(value) {\n  return new Promise(function(resolve, reject) {\n    reject(value);\n  });\n};\n\nPromise.race = function(values) {\n  return new Promise(function(resolve, reject) {\n    for (var i = 0, len = values.length; i < len; i++) {\n      values[i].then(resolve, reject);\n    }\n  });\n};\n\n// Use polyfill for setImmediate for performance gains\nPromise._immediateFn =\n  (typeof setImmediate === 'function' &&\n    function(fn) {\n      setImmediate(fn);\n    }) ||\n  function(fn) {\n    setTimeoutFunc(fn, 0);\n  };\n\nPromise._unhandledRejectionFn = function _unhandledRejectionFn(err) {\n  if (typeof console !== 'undefined' && console) {\n    console.warn('Possible Unhandled Promise Rejection:', err); // eslint-disable-line no-console\n  }\n};\n\nvar globalNS = (function() {\n  // the only reliable means to get the global object is\n  // `Function('return this')()`\n  // However, this causes CSP violations in Chrome apps.\n  if (typeof self !== 'undefined') {\n    return self;\n  }\n  if (typeof window !== 'undefined') {\n    return window;\n  }\n  if (typeof global !== 'undefined') {\n    return global;\n  }\n  throw new Error('unable to locate global object');\n})();\n\nif (!globalNS.Promise) {\n  globalNS.Promise = Promise;\n}\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/promise-polyfill/lib/polyfill.js","import $$observable from 'symbol-observable';\n\n/**\n * These are private action types reserved by Redux.\n * For any unknown actions, you must return the current state.\n * If the current state is undefined, you must return the initial state.\n * Do not reference these action types directly in your code.\n */\nvar randomString = function randomString() {\n  return Math.random().toString(36).substring(7).split('').join('.');\n};\n\nvar ActionTypes = {\n  INIT: \"@@redux/INIT\" + randomString(),\n  REPLACE: \"@@redux/REPLACE\" + randomString(),\n  PROBE_UNKNOWN_ACTION: function PROBE_UNKNOWN_ACTION() {\n    return \"@@redux/PROBE_UNKNOWN_ACTION\" + randomString();\n  }\n};\n\n/**\n * @param {any} obj The object to inspect.\n * @returns {boolean} True if the argument appears to be a plain object.\n */\nfunction isPlainObject(obj) {\n  if (typeof obj !== 'object' || obj === null) return false;\n  var proto = obj;\n\n  while (Object.getPrototypeOf(proto) !== null) {\n    proto = Object.getPrototypeOf(proto);\n  }\n\n  return Object.getPrototypeOf(obj) === proto;\n}\n\n/**\n * Creates a Redux store that holds the state tree.\n * The only way to change the data in the store is to call `dispatch()` on it.\n *\n * There should only be a single store in your app. To specify how different\n * parts of the state tree respond to actions, you may combine several reducers\n * into a single reducer function by using `combineReducers`.\n *\n * @param {Function} reducer A function that returns the next state tree, given\n * the current state tree and the action to handle.\n *\n * @param {any} [preloadedState] The initial state. You may optionally specify it\n * to hydrate the state from the server in universal apps, or to restore a\n * previously serialized user session.\n * If you use `combineReducers` to produce the root reducer function, this must be\n * an object with the same shape as `combineReducers` keys.\n *\n * @param {Function} [enhancer] The store enhancer. You may optionally specify it\n * to enhance the store with third-party capabilities such as middleware,\n * time travel, persistence, etc. The only store enhancer that ships with Redux\n * is `applyMiddleware()`.\n *\n * @returns {Store} A Redux store that lets you read the state, dispatch actions\n * and subscribe to changes.\n */\n\nfunction createStore(reducer, preloadedState, enhancer) {\n  var _ref2;\n\n  if (typeof preloadedState === 'function' && typeof enhancer === 'function' || typeof enhancer === 'function' && typeof arguments[3] === 'function') {\n    throw new Error('It looks like you are passing several store enhancers to ' + 'createStore(). This is not supported. Instead, compose them ' + 'together to a single function');\n  }\n\n  if (typeof preloadedState === 'function' && typeof enhancer === 'undefined') {\n    enhancer = preloadedState;\n    preloadedState = undefined;\n  }\n\n  if (typeof enhancer !== 'undefined') {\n    if (typeof enhancer !== 'function') {\n      throw new Error('Expected the enhancer to be a function.');\n    }\n\n    return enhancer(createStore)(reducer, preloadedState);\n  }\n\n  if (typeof reducer !== 'function') {\n    throw new Error('Expected the reducer to be a function.');\n  }\n\n  var currentReducer = reducer;\n  var currentState = preloadedState;\n  var currentListeners = [];\n  var nextListeners = currentListeners;\n  var isDispatching = false;\n\n  function ensureCanMutateNextListeners() {\n    if (nextListeners === currentListeners) {\n      nextListeners = currentListeners.slice();\n    }\n  }\n  /**\n   * Reads the state tree managed by the store.\n   *\n   * @returns {any} The current state tree of your application.\n   */\n\n\n  function getState() {\n    if (isDispatching) {\n      throw new Error('You may not call store.getState() while the reducer is executing. ' + 'The reducer has already received the state as an argument. ' + 'Pass it down from the top reducer instead of reading it from the store.');\n    }\n\n    return currentState;\n  }\n  /**\n   * Adds a change listener. It will be called any time an action is dispatched,\n   * and some part of the state tree may potentially have changed. You may then\n   * call `getState()` to read the current state tree inside the callback.\n   *\n   * You may call `dispatch()` from a change listener, with the following\n   * caveats:\n   *\n   * 1. The subscriptions are snapshotted just before every `dispatch()` call.\n   * If you subscribe or unsubscribe while the listeners are being invoked, this\n   * will not have any effect on the `dispatch()` that is currently in progress.\n   * However, the next `dispatch()` call, whether nested or not, will use a more\n   * recent snapshot of the subscription list.\n   *\n   * 2. The listener should not expect to see all state changes, as the state\n   * might have been updated multiple times during a nested `dispatch()` before\n   * the listener is called. It is, however, guaranteed that all subscribers\n   * registered before the `dispatch()` started will be called with the latest\n   * state by the time it exits.\n   *\n   * @param {Function} listener A callback to be invoked on every dispatch.\n   * @returns {Function} A function to remove this change listener.\n   */\n\n\n  function subscribe(listener) {\n    if (typeof listener !== 'function') {\n      throw new Error('Expected the listener to be a function.');\n    }\n\n    if (isDispatching) {\n      throw new Error('You may not call store.subscribe() while the reducer is executing. ' + 'If you would like to be notified after the store has been updated, subscribe from a ' + 'component and invoke store.getState() in the callback to access the latest state. ' + 'See https://redux.js.org/api-reference/store#subscribe(listener) for more details.');\n    }\n\n    var isSubscribed = true;\n    ensureCanMutateNextListeners();\n    nextListeners.push(listener);\n    return function unsubscribe() {\n      if (!isSubscribed) {\n        return;\n      }\n\n      if (isDispatching) {\n        throw new Error('You may not unsubscribe from a store listener while the reducer is executing. ' + 'See https://redux.js.org/api-reference/store#subscribe(listener) for more details.');\n      }\n\n      isSubscribed = false;\n      ensureCanMutateNextListeners();\n      var index = nextListeners.indexOf(listener);\n      nextListeners.splice(index, 1);\n    };\n  }\n  /**\n   * Dispatches an action. It is the only way to trigger a state change.\n   *\n   * The `reducer` function, used to create the store, will be called with the\n   * current state tree and the given `action`. Its return value will\n   * be considered the **next** state of the tree, and the change listeners\n   * will be notified.\n   *\n   * The base implementation only supports plain object actions. If you want to\n   * dispatch a Promise, an Observable, a thunk, or something else, you need to\n   * wrap your store creating function into the corresponding middleware. For\n   * example, see the documentation for the `redux-thunk` package. Even the\n   * middleware will eventually dispatch plain object actions using this method.\n   *\n   * @param {Object} action A plain object representing “what changed”. It is\n   * a good idea to keep actions serializable so you can record and replay user\n   * sessions, or use the time travelling `redux-devtools`. An action must have\n   * a `type` property which may not be `undefined`. It is a good idea to use\n   * string constants for action types.\n   *\n   * @returns {Object} For convenience, the same action object you dispatched.\n   *\n   * Note that, if you use a custom middleware, it may wrap `dispatch()` to\n   * return something else (for example, a Promise you can await).\n   */\n\n\n  function dispatch(action) {\n    if (!isPlainObject(action)) {\n      throw new Error('Actions must be plain objects. ' + 'Use custom middleware for async actions.');\n    }\n\n    if (typeof action.type === 'undefined') {\n      throw new Error('Actions may not have an undefined \"type\" property. ' + 'Have you misspelled a constant?');\n    }\n\n    if (isDispatching) {\n      throw new Error('Reducers may not dispatch actions.');\n    }\n\n    try {\n      isDispatching = true;\n      currentState = currentReducer(currentState, action);\n    } finally {\n      isDispatching = false;\n    }\n\n    var listeners = currentListeners = nextListeners;\n\n    for (var i = 0; i < listeners.length; i++) {\n      var listener = listeners[i];\n      listener();\n    }\n\n    return action;\n  }\n  /**\n   * Replaces the reducer currently used by the store to calculate the state.\n   *\n   * You might need this if your app implements code splitting and you want to\n   * load some of the reducers dynamically. You might also need this if you\n   * implement a hot reloading mechanism for Redux.\n   *\n   * @param {Function} nextReducer The reducer for the store to use instead.\n   * @returns {void}\n   */\n\n\n  function replaceReducer(nextReducer) {\n    if (typeof nextReducer !== 'function') {\n      throw new Error('Expected the nextReducer to be a function.');\n    }\n\n    currentReducer = nextReducer;\n    dispatch({\n      type: ActionTypes.REPLACE\n    });\n  }\n  /**\n   * Interoperability point for observable/reactive libraries.\n   * @returns {observable} A minimal observable of state changes.\n   * For more information, see the observable proposal:\n   * https://github.com/tc39/proposal-observable\n   */\n\n\n  function observable() {\n    var _ref;\n\n    var outerSubscribe = subscribe;\n    return _ref = {\n      /**\n       * The minimal observable subscription method.\n       * @param {Object} observer Any object that can be used as an observer.\n       * The observer object should have a `next` method.\n       * @returns {subscription} An object with an `unsubscribe` method that can\n       * be used to unsubscribe the observable from the store, and prevent further\n       * emission of values from the observable.\n       */\n      subscribe: function subscribe(observer) {\n        if (typeof observer !== 'object' || observer === null) {\n          throw new TypeError('Expected the observer to be an object.');\n        }\n\n        function observeState() {\n          if (observer.next) {\n            observer.next(getState());\n          }\n        }\n\n        observeState();\n        var unsubscribe = outerSubscribe(observeState);\n        return {\n          unsubscribe: unsubscribe\n        };\n      }\n    }, _ref[$$observable] = function () {\n      return this;\n    }, _ref;\n  } // When a store is created, an \"INIT\" action is dispatched so that every\n  // reducer returns their initial state. This effectively populates\n  // the initial state tree.\n\n\n  dispatch({\n    type: ActionTypes.INIT\n  });\n  return _ref2 = {\n    dispatch: dispatch,\n    subscribe: subscribe,\n    getState: getState,\n    replaceReducer: replaceReducer\n  }, _ref2[$$observable] = observable, _ref2;\n}\n\n/**\n * Prints a warning in the console if it exists.\n *\n * @param {String} message The warning message.\n * @returns {void}\n */\nfunction warning(message) {\n  /* eslint-disable no-console */\n  if (typeof console !== 'undefined' && typeof console.error === 'function') {\n    console.error(message);\n  }\n  /* eslint-enable no-console */\n\n\n  try {\n    // This error was thrown as a convenience so that if you enable\n    // \"break on all exceptions\" in your console,\n    // it would pause the execution at this line.\n    throw new Error(message);\n  } catch (e) {} // eslint-disable-line no-empty\n\n}\n\nfunction getUndefinedStateErrorMessage(key, action) {\n  var actionType = action && action.type;\n  var actionDescription = actionType && \"action \\\"\" + String(actionType) + \"\\\"\" || 'an action';\n  return \"Given \" + actionDescription + \", reducer \\\"\" + key + \"\\\" returned undefined. \" + \"To ignore an action, you must explicitly return the previous state. \" + \"If you want this reducer to hold no value, you can return null instead of undefined.\";\n}\n\nfunction getUnexpectedStateShapeWarningMessage(inputState, reducers, action, unexpectedKeyCache) {\n  var reducerKeys = Object.keys(reducers);\n  var argumentName = action && action.type === ActionTypes.INIT ? 'preloadedState argument passed to createStore' : 'previous state received by the reducer';\n\n  if (reducerKeys.length === 0) {\n    return 'Store does not have a valid reducer. Make sure the argument passed ' + 'to combineReducers is an object whose values are reducers.';\n  }\n\n  if (!isPlainObject(inputState)) {\n    return \"The \" + argumentName + \" has unexpected type of \\\"\" + {}.toString.call(inputState).match(/\\s([a-z|A-Z]+)/)[1] + \"\\\". Expected argument to be an object with the following \" + (\"keys: \\\"\" + reducerKeys.join('\", \"') + \"\\\"\");\n  }\n\n  var unexpectedKeys = Object.keys(inputState).filter(function (key) {\n    return !reducers.hasOwnProperty(key) && !unexpectedKeyCache[key];\n  });\n  unexpectedKeys.forEach(function (key) {\n    unexpectedKeyCache[key] = true;\n  });\n  if (action && action.type === ActionTypes.REPLACE) return;\n\n  if (unexpectedKeys.length > 0) {\n    return \"Unexpected \" + (unexpectedKeys.length > 1 ? 'keys' : 'key') + \" \" + (\"\\\"\" + unexpectedKeys.join('\", \"') + \"\\\" found in \" + argumentName + \". \") + \"Expected to find one of the known reducer keys instead: \" + (\"\\\"\" + reducerKeys.join('\", \"') + \"\\\". Unexpected keys will be ignored.\");\n  }\n}\n\nfunction assertReducerShape(reducers) {\n  Object.keys(reducers).forEach(function (key) {\n    var reducer = reducers[key];\n    var initialState = reducer(undefined, {\n      type: ActionTypes.INIT\n    });\n\n    if (typeof initialState === 'undefined') {\n      throw new Error(\"Reducer \\\"\" + key + \"\\\" returned undefined during initialization. \" + \"If the state passed to the reducer is undefined, you must \" + \"explicitly return the initial state. The initial state may \" + \"not be undefined. If you don't want to set a value for this reducer, \" + \"you can use null instead of undefined.\");\n    }\n\n    if (typeof reducer(undefined, {\n      type: ActionTypes.PROBE_UNKNOWN_ACTION()\n    }) === 'undefined') {\n      throw new Error(\"Reducer \\\"\" + key + \"\\\" returned undefined when probed with a random type. \" + (\"Don't try to handle \" + ActionTypes.INIT + \" or other actions in \\\"redux/*\\\" \") + \"namespace. They are considered private. Instead, you must return the \" + \"current state for any unknown actions, unless it is undefined, \" + \"in which case you must return the initial state, regardless of the \" + \"action type. The initial state may not be undefined, but can be null.\");\n    }\n  });\n}\n/**\n * Turns an object whose values are different reducer functions, into a single\n * reducer function. It will call every child reducer, and gather their results\n * into a single state object, whose keys correspond to the keys of the passed\n * reducer functions.\n *\n * @param {Object} reducers An object whose values correspond to different\n * reducer functions that need to be combined into one. One handy way to obtain\n * it is to use ES6 `import * as reducers` syntax. The reducers may never return\n * undefined for any action. Instead, they should return their initial state\n * if the state passed to them was undefined, and the current state for any\n * unrecognized action.\n *\n * @returns {Function} A reducer function that invokes every reducer inside the\n * passed object, and builds a state object with the same shape.\n */\n\n\nfunction combineReducers(reducers) {\n  var reducerKeys = Object.keys(reducers);\n  var finalReducers = {};\n\n  for (var i = 0; i < reducerKeys.length; i++) {\n    var key = reducerKeys[i];\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (typeof reducers[key] === 'undefined') {\n        warning(\"No reducer provided for key \\\"\" + key + \"\\\"\");\n      }\n    }\n\n    if (typeof reducers[key] === 'function') {\n      finalReducers[key] = reducers[key];\n    }\n  }\n\n  var finalReducerKeys = Object.keys(finalReducers);\n  var unexpectedKeyCache;\n\n  if (process.env.NODE_ENV !== 'production') {\n    unexpectedKeyCache = {};\n  }\n\n  var shapeAssertionError;\n\n  try {\n    assertReducerShape(finalReducers);\n  } catch (e) {\n    shapeAssertionError = e;\n  }\n\n  return function combination(state, action) {\n    if (state === void 0) {\n      state = {};\n    }\n\n    if (shapeAssertionError) {\n      throw shapeAssertionError;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      var warningMessage = getUnexpectedStateShapeWarningMessage(state, finalReducers, action, unexpectedKeyCache);\n\n      if (warningMessage) {\n        warning(warningMessage);\n      }\n    }\n\n    var hasChanged = false;\n    var nextState = {};\n\n    for (var _i = 0; _i < finalReducerKeys.length; _i++) {\n      var _key = finalReducerKeys[_i];\n      var reducer = finalReducers[_key];\n      var previousStateForKey = state[_key];\n      var nextStateForKey = reducer(previousStateForKey, action);\n\n      if (typeof nextStateForKey === 'undefined') {\n        var errorMessage = getUndefinedStateErrorMessage(_key, action);\n        throw new Error(errorMessage);\n      }\n\n      nextState[_key] = nextStateForKey;\n      hasChanged = hasChanged || nextStateForKey !== previousStateForKey;\n    }\n\n    return hasChanged ? nextState : state;\n  };\n}\n\nfunction bindActionCreator(actionCreator, dispatch) {\n  return function () {\n    return dispatch(actionCreator.apply(this, arguments));\n  };\n}\n/**\n * Turns an object whose values are action creators, into an object with the\n * same keys, but with every function wrapped into a `dispatch` call so they\n * may be invoked directly. This is just a convenience method, as you can call\n * `store.dispatch(MyActionCreators.doSomething())` yourself just fine.\n *\n * For convenience, you can also pass a single function as the first argument,\n * and get a function in return.\n *\n * @param {Function|Object} actionCreators An object whose values are action\n * creator functions. One handy way to obtain it is to use ES6 `import * as`\n * syntax. You may also pass a single function.\n *\n * @param {Function} dispatch The `dispatch` function available on your Redux\n * store.\n *\n * @returns {Function|Object} The object mimicking the original object, but with\n * every action creator wrapped into the `dispatch` call. If you passed a\n * function as `actionCreators`, the return value will also be a single\n * function.\n */\n\n\nfunction bindActionCreators(actionCreators, dispatch) {\n  if (typeof actionCreators === 'function') {\n    return bindActionCreator(actionCreators, dispatch);\n  }\n\n  if (typeof actionCreators !== 'object' || actionCreators === null) {\n    throw new Error(\"bindActionCreators expected an object or a function, instead received \" + (actionCreators === null ? 'null' : typeof actionCreators) + \". \" + \"Did you write \\\"import ActionCreators from\\\" instead of \\\"import * as ActionCreators from\\\"?\");\n  }\n\n  var keys = Object.keys(actionCreators);\n  var boundActionCreators = {};\n\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var actionCreator = actionCreators[key];\n\n    if (typeof actionCreator === 'function') {\n      boundActionCreators[key] = bindActionCreator(actionCreator, dispatch);\n    }\n  }\n\n  return boundActionCreators;\n}\n\nfunction _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}\n\nfunction _objectSpread(target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i] != null ? arguments[i] : {};\n    var ownKeys = Object.keys(source);\n\n    if (typeof Object.getOwnPropertySymbols === 'function') {\n      ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {\n        return Object.getOwnPropertyDescriptor(source, sym).enumerable;\n      }));\n    }\n\n    ownKeys.forEach(function (key) {\n      _defineProperty(target, key, source[key]);\n    });\n  }\n\n  return target;\n}\n\n/**\n * Composes single-argument functions from right to left. The rightmost\n * function can take multiple arguments as it provides the signature for\n * the resulting composite function.\n *\n * @param {...Function} funcs The functions to compose.\n * @returns {Function} A function obtained by composing the argument functions\n * from right to left. For example, compose(f, g, h) is identical to doing\n * (...args) => f(g(h(...args))).\n */\nfunction compose() {\n  for (var _len = arguments.length, funcs = new Array(_len), _key = 0; _key < _len; _key++) {\n    funcs[_key] = arguments[_key];\n  }\n\n  if (funcs.length === 0) {\n    return function (arg) {\n      return arg;\n    };\n  }\n\n  if (funcs.length === 1) {\n    return funcs[0];\n  }\n\n  return funcs.reduce(function (a, b) {\n    return function () {\n      return a(b.apply(void 0, arguments));\n    };\n  });\n}\n\n/**\n * Creates a store enhancer that applies middleware to the dispatch method\n * of the Redux store. This is handy for a variety of tasks, such as expressing\n * asynchronous actions in a concise manner, or logging every action payload.\n *\n * See `redux-thunk` package as an example of the Redux middleware.\n *\n * Because middleware is potentially asynchronous, this should be the first\n * store enhancer in the composition chain.\n *\n * Note that each middleware will be given the `dispatch` and `getState` functions\n * as named arguments.\n *\n * @param {...Function} middlewares The middleware chain to be applied.\n * @returns {Function} A store enhancer applying the middleware.\n */\n\nfunction applyMiddleware() {\n  for (var _len = arguments.length, middlewares = new Array(_len), _key = 0; _key < _len; _key++) {\n    middlewares[_key] = arguments[_key];\n  }\n\n  return function (createStore) {\n    return function () {\n      var store = createStore.apply(void 0, arguments);\n\n      var _dispatch = function dispatch() {\n        throw new Error(\"Dispatching while constructing your middleware is not allowed. \" + \"Other middleware would not be applied to this dispatch.\");\n      };\n\n      var middlewareAPI = {\n        getState: store.getState,\n        dispatch: function dispatch() {\n          return _dispatch.apply(void 0, arguments);\n        }\n      };\n      var chain = middlewares.map(function (middleware) {\n        return middleware(middlewareAPI);\n      });\n      _dispatch = compose.apply(void 0, chain)(store.dispatch);\n      return _objectSpread({}, store, {\n        dispatch: _dispatch\n      });\n    };\n  };\n}\n\n/*\n * This is a dummy function to check if the function name has been altered by minification.\n * If the function has been minified and NODE_ENV !== 'production', warn the user.\n */\n\nfunction isCrushed() {}\n\nif (process.env.NODE_ENV !== 'production' && typeof isCrushed.name === 'string' && isCrushed.name !== 'isCrushed') {\n  warning('You are currently using minified code outside of NODE_ENV === \"production\". ' + 'This means that you are running a slower development build of Redux. ' + 'You can use loose-envify (https://github.com/zertosh/loose-envify) for browserify ' + 'or setting mode to production in webpack (https://webpack.js.org/concepts/mode/) ' + 'to ensure you have the correct code for your production build.');\n}\n\nexport { createStore, combineReducers, bindActionCreators, applyMiddleware, compose, ActionTypes as __DO_NOT_USE__ActionTypes };\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/redux/es/redux.js","function _typeof2(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof2 = function _typeof2(obj) { return typeof obj; }; } else { _typeof2 = function _typeof2(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof2(obj); }\n\nfunction _typeof(obj) {\n  if (typeof Symbol === \"function\" && _typeof2(Symbol.iterator) === \"symbol\") {\n    module.exports = _typeof = function _typeof(obj) {\n      return _typeof2(obj);\n    };\n  } else {\n    module.exports = _typeof = function _typeof(obj) {\n      return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : _typeof2(obj);\n    };\n  }\n\n  return _typeof(obj);\n}\n\nmodule.exports = _typeof;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/typeof.js","// IE 8- don't enum bug keys\nmodule.exports = (\n  'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'\n).split(',');\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_enum-bug-keys.js","var anObject = require('./_an-object');\nvar IE8_DOM_DEFINE = require('./_ie8-dom-define');\nvar toPrimitive = require('./_to-primitive');\nvar dP = Object.defineProperty;\n\nexports.f = require('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes) {\n  anObject(O);\n  P = toPrimitive(P, true);\n  anObject(Attributes);\n  if (IE8_DOM_DEFINE) try {\n    return dP(O, P, Attributes);\n  } catch (e) { /* empty */ }\n  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');\n  if ('value' in Attributes) O[P] = Attributes.value;\n  return O;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-dp.js","(function(self) {\n  'use strict';\n\n  if (self.fetch) {\n    return\n  }\n\n  var support = {\n    searchParams: 'URLSearchParams' in self,\n    iterable: 'Symbol' in self && 'iterator' in Symbol,\n    blob: 'FileReader' in self && 'Blob' in self && (function() {\n      try {\n        new Blob()\n        return true\n      } catch(e) {\n        return false\n      }\n    })(),\n    formData: 'FormData' in self,\n    arrayBuffer: 'ArrayBuffer' in self\n  }\n\n  if (support.arrayBuffer) {\n    var viewClasses = [\n      '[object Int8Array]',\n      '[object Uint8Array]',\n      '[object Uint8ClampedArray]',\n      '[object Int16Array]',\n      '[object Uint16Array]',\n      '[object Int32Array]',\n      '[object Uint32Array]',\n      '[object Float32Array]',\n      '[object Float64Array]'\n    ]\n\n    var isDataView = function(obj) {\n      return obj && DataView.prototype.isPrototypeOf(obj)\n    }\n\n    var isArrayBufferView = ArrayBuffer.isView || function(obj) {\n      return obj && viewClasses.indexOf(Object.prototype.toString.call(obj)) > -1\n    }\n  }\n\n  function normalizeName(name) {\n    if (typeof name !== 'string') {\n      name = String(name)\n    }\n    if (/[^a-z0-9\\-#$%&'*+.\\^_`|~]/i.test(name)) {\n      throw new TypeError('Invalid character in header field name')\n    }\n    return name.toLowerCase()\n  }\n\n  function normalizeValue(value) {\n    if (typeof value !== 'string') {\n      value = String(value)\n    }\n    return value\n  }\n\n  // Build a destructive iterator for the value list\n  function iteratorFor(items) {\n    var iterator = {\n      next: function() {\n        var value = items.shift()\n        return {done: value === undefined, value: value}\n      }\n    }\n\n    if (support.iterable) {\n      iterator[Symbol.iterator] = function() {\n        return iterator\n      }\n    }\n\n    return iterator\n  }\n\n  function Headers(headers) {\n    this.map = {}\n\n    if (headers instanceof Headers) {\n      headers.forEach(function(value, name) {\n        this.append(name, value)\n      }, this)\n    } else if (Array.isArray(headers)) {\n      headers.forEach(function(header) {\n        this.append(header[0], header[1])\n      }, this)\n    } else if (headers) {\n      Object.getOwnPropertyNames(headers).forEach(function(name) {\n        this.append(name, headers[name])\n      }, this)\n    }\n  }\n\n  Headers.prototype.append = function(name, value) {\n    name = normalizeName(name)\n    value = normalizeValue(value)\n    var oldValue = this.map[name]\n    this.map[name] = oldValue ? oldValue+','+value : value\n  }\n\n  Headers.prototype['delete'] = function(name) {\n    delete this.map[normalizeName(name)]\n  }\n\n  Headers.prototype.get = function(name) {\n    name = normalizeName(name)\n    return this.has(name) ? this.map[name] : null\n  }\n\n  Headers.prototype.has = function(name) {\n    return this.map.hasOwnProperty(normalizeName(name))\n  }\n\n  Headers.prototype.set = function(name, value) {\n    this.map[normalizeName(name)] = normalizeValue(value)\n  }\n\n  Headers.prototype.forEach = function(callback, thisArg) {\n    for (var name in this.map) {\n      if (this.map.hasOwnProperty(name)) {\n        callback.call(thisArg, this.map[name], name, this)\n      }\n    }\n  }\n\n  Headers.prototype.keys = function() {\n    var items = []\n    this.forEach(function(value, name) { items.push(name) })\n    return iteratorFor(items)\n  }\n\n  Headers.prototype.values = function() {\n    var items = []\n    this.forEach(function(value) { items.push(value) })\n    return iteratorFor(items)\n  }\n\n  Headers.prototype.entries = function() {\n    var items = []\n    this.forEach(function(value, name) { items.push([name, value]) })\n    return iteratorFor(items)\n  }\n\n  if (support.iterable) {\n    Headers.prototype[Symbol.iterator] = Headers.prototype.entries\n  }\n\n  function consumed(body) {\n    if (body.bodyUsed) {\n      return Promise.reject(new TypeError('Already read'))\n    }\n    body.bodyUsed = true\n  }\n\n  function fileReaderReady(reader) {\n    return new Promise(function(resolve, reject) {\n      reader.onload = function() {\n        resolve(reader.result)\n      }\n      reader.onerror = function() {\n        reject(reader.error)\n      }\n    })\n  }\n\n  function readBlobAsArrayBuffer(blob) {\n    var reader = new FileReader()\n    var promise = fileReaderReady(reader)\n    reader.readAsArrayBuffer(blob)\n    return promise\n  }\n\n  function readBlobAsText(blob) {\n    var reader = new FileReader()\n    var promise = fileReaderReady(reader)\n    reader.readAsText(blob)\n    return promise\n  }\n\n  function readArrayBufferAsText(buf) {\n    var view = new Uint8Array(buf)\n    var chars = new Array(view.length)\n\n    for (var i = 0; i < view.length; i++) {\n      chars[i] = String.fromCharCode(view[i])\n    }\n    return chars.join('')\n  }\n\n  function bufferClone(buf) {\n    if (buf.slice) {\n      return buf.slice(0)\n    } else {\n      var view = new Uint8Array(buf.byteLength)\n      view.set(new Uint8Array(buf))\n      return view.buffer\n    }\n  }\n\n  function Body() {\n    this.bodyUsed = false\n\n    this._initBody = function(body) {\n      this._bodyInit = body\n      if (!body) {\n        this._bodyText = ''\n      } else if (typeof body === 'string') {\n        this._bodyText = body\n      } else if (support.blob && Blob.prototype.isPrototypeOf(body)) {\n        this._bodyBlob = body\n      } else if (support.formData && FormData.prototype.isPrototypeOf(body)) {\n        this._bodyFormData = body\n      } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {\n        this._bodyText = body.toString()\n      } else if (support.arrayBuffer && support.blob && isDataView(body)) {\n        this._bodyArrayBuffer = bufferClone(body.buffer)\n        // IE 10-11 can't handle a DataView body.\n        this._bodyInit = new Blob([this._bodyArrayBuffer])\n      } else if (support.arrayBuffer && (ArrayBuffer.prototype.isPrototypeOf(body) || isArrayBufferView(body))) {\n        this._bodyArrayBuffer = bufferClone(body)\n      } else {\n        throw new Error('unsupported BodyInit type')\n      }\n\n      if (!this.headers.get('content-type')) {\n        if (typeof body === 'string') {\n          this.headers.set('content-type', 'text/plain;charset=UTF-8')\n        } else if (this._bodyBlob && this._bodyBlob.type) {\n          this.headers.set('content-type', this._bodyBlob.type)\n        } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {\n          this.headers.set('content-type', 'application/x-www-form-urlencoded;charset=UTF-8')\n        }\n      }\n    }\n\n    if (support.blob) {\n      this.blob = function() {\n        var rejected = consumed(this)\n        if (rejected) {\n          return rejected\n        }\n\n        if (this._bodyBlob) {\n          return Promise.resolve(this._bodyBlob)\n        } else if (this._bodyArrayBuffer) {\n          return Promise.resolve(new Blob([this._bodyArrayBuffer]))\n        } else if (this._bodyFormData) {\n          throw new Error('could not read FormData body as blob')\n        } else {\n          return Promise.resolve(new Blob([this._bodyText]))\n        }\n      }\n\n      this.arrayBuffer = function() {\n        if (this._bodyArrayBuffer) {\n          return consumed(this) || Promise.resolve(this._bodyArrayBuffer)\n        } else {\n          return this.blob().then(readBlobAsArrayBuffer)\n        }\n      }\n    }\n\n    this.text = function() {\n      var rejected = consumed(this)\n      if (rejected) {\n        return rejected\n      }\n\n      if (this._bodyBlob) {\n        return readBlobAsText(this._bodyBlob)\n      } else if (this._bodyArrayBuffer) {\n        return Promise.resolve(readArrayBufferAsText(this._bodyArrayBuffer))\n      } else if (this._bodyFormData) {\n        throw new Error('could not read FormData body as text')\n      } else {\n        return Promise.resolve(this._bodyText)\n      }\n    }\n\n    if (support.formData) {\n      this.formData = function() {\n        return this.text().then(decode)\n      }\n    }\n\n    this.json = function() {\n      return this.text().then(JSON.parse)\n    }\n\n    return this\n  }\n\n  // HTTP methods whose capitalization should be normalized\n  var methods = ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST', 'PUT']\n\n  function normalizeMethod(method) {\n    var upcased = method.toUpperCase()\n    return (methods.indexOf(upcased) > -1) ? upcased : method\n  }\n\n  function Request(input, options) {\n    options = options || {}\n    var body = options.body\n\n    if (input instanceof Request) {\n      if (input.bodyUsed) {\n        throw new TypeError('Already read')\n      }\n      this.url = input.url\n      this.credentials = input.credentials\n      if (!options.headers) {\n        this.headers = new Headers(input.headers)\n      }\n      this.method = input.method\n      this.mode = input.mode\n      if (!body && input._bodyInit != null) {\n        body = input._bodyInit\n        input.bodyUsed = true\n      }\n    } else {\n      this.url = String(input)\n    }\n\n    this.credentials = options.credentials || this.credentials || 'omit'\n    if (options.headers || !this.headers) {\n      this.headers = new Headers(options.headers)\n    }\n    this.method = normalizeMethod(options.method || this.method || 'GET')\n    this.mode = options.mode || this.mode || null\n    this.referrer = null\n\n    if ((this.method === 'GET' || this.method === 'HEAD') && body) {\n      throw new TypeError('Body not allowed for GET or HEAD requests')\n    }\n    this._initBody(body)\n  }\n\n  Request.prototype.clone = function() {\n    return new Request(this, { body: this._bodyInit })\n  }\n\n  function decode(body) {\n    var form = new FormData()\n    body.trim().split('&').forEach(function(bytes) {\n      if (bytes) {\n        var split = bytes.split('=')\n        var name = split.shift().replace(/\\+/g, ' ')\n        var value = split.join('=').replace(/\\+/g, ' ')\n        form.append(decodeURIComponent(name), decodeURIComponent(value))\n      }\n    })\n    return form\n  }\n\n  function parseHeaders(rawHeaders) {\n    var headers = new Headers()\n    // Replace instances of \\r\\n and \\n followed by at least one space or horizontal tab with a space\n    // https://tools.ietf.org/html/rfc7230#section-3.2\n    var preProcessedHeaders = rawHeaders.replace(/\\r?\\n[\\t ]+/g, ' ')\n    preProcessedHeaders.split(/\\r?\\n/).forEach(function(line) {\n      var parts = line.split(':')\n      var key = parts.shift().trim()\n      if (key) {\n        var value = parts.join(':').trim()\n        headers.append(key, value)\n      }\n    })\n    return headers\n  }\n\n  Body.call(Request.prototype)\n\n  function Response(bodyInit, options) {\n    if (!options) {\n      options = {}\n    }\n\n    this.type = 'default'\n    this.status = options.status === undefined ? 200 : options.status\n    this.ok = this.status >= 200 && this.status < 300\n    this.statusText = 'statusText' in options ? options.statusText : 'OK'\n    this.headers = new Headers(options.headers)\n    this.url = options.url || ''\n    this._initBody(bodyInit)\n  }\n\n  Body.call(Response.prototype)\n\n  Response.prototype.clone = function() {\n    return new Response(this._bodyInit, {\n      status: this.status,\n      statusText: this.statusText,\n      headers: new Headers(this.headers),\n      url: this.url\n    })\n  }\n\n  Response.error = function() {\n    var response = new Response(null, {status: 0, statusText: ''})\n    response.type = 'error'\n    return response\n  }\n\n  var redirectStatuses = [301, 302, 303, 307, 308]\n\n  Response.redirect = function(url, status) {\n    if (redirectStatuses.indexOf(status) === -1) {\n      throw new RangeError('Invalid status code')\n    }\n\n    return new Response(null, {status: status, headers: {location: url}})\n  }\n\n  self.Headers = Headers\n  self.Request = Request\n  self.Response = Response\n\n  self.fetch = function(input, init) {\n    return new Promise(function(resolve, reject) {\n      var request = new Request(input, init)\n      var xhr = new XMLHttpRequest()\n\n      xhr.onload = function() {\n        var options = {\n          status: xhr.status,\n          statusText: xhr.statusText,\n          headers: parseHeaders(xhr.getAllResponseHeaders() || '')\n        }\n        options.url = 'responseURL' in xhr ? xhr.responseURL : options.headers.get('X-Request-URL')\n        var body = 'response' in xhr ? xhr.response : xhr.responseText\n        resolve(new Response(body, options))\n      }\n\n      xhr.onerror = function() {\n        reject(new TypeError('Network request failed'))\n      }\n\n      xhr.ontimeout = function() {\n        reject(new TypeError('Network request failed'))\n      }\n\n      xhr.open(request.method, request.url, true)\n\n      if (request.credentials === 'include') {\n        xhr.withCredentials = true\n      } else if (request.credentials === 'omit') {\n        xhr.withCredentials = false\n      }\n\n      if ('responseType' in xhr && support.blob) {\n        xhr.responseType = 'blob'\n      }\n\n      request.headers.forEach(function(value, name) {\n        xhr.setRequestHeader(name, value)\n      })\n\n      xhr.send(typeof request._bodyInit === 'undefined' ? null : request._bodyInit)\n    })\n  }\n  self.fetch.polyfill = true\n})(typeof self !== 'undefined' ? self : this);\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/whatwg-fetch/fetch.js","module.exports = !require('./_descriptors') && !require('./_fails')(function () {\n  return Object.defineProperty(require('./_dom-create')('div'), 'a', { get: function () { return 7; } }).a != 7;\n});\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_ie8-dom-define.js","var setPrototypeOf = require(\"./setPrototypeOf\");\n\nfunction _inherits(subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function\");\n  }\n\n  subClass.prototype = Object.create(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) setPrototypeOf(subClass, superClass);\n}\n\nmodule.exports = _inherits;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@babel/runtime/helpers/inherits.js","'use strict';\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nvar util = require('@firebase/util');\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar contains = function (obj, key) {\r\n    return Object.prototype.hasOwnProperty.call(obj, key);\r\n};\r\nvar DEFAULT_ENTRY_NAME = '[DEFAULT]';\r\n// An array to capture listeners before the true auth functions\r\n// exist\r\nvar tokenListeners = [];\r\n/**\r\n * Global context object for a collection of services using\r\n * a shared authentication state.\r\n */\r\nvar FirebaseAppImpl = /** @class */ (function () {\r\n    function FirebaseAppImpl(options, config, firebase_) {\r\n        this.firebase_ = firebase_;\r\n        this.isDeleted_ = false;\r\n        this.services_ = {};\r\n        this.name_ = config.name;\r\n        this._automaticDataCollectionEnabled =\r\n            config.automaticDataCollectionEnabled || false;\r\n        this.options_ = util.deepCopy(options);\r\n        this.INTERNAL = {\r\n            getUid: function () { return null; },\r\n            getToken: function () { return Promise.resolve(null); },\r\n            addAuthTokenListener: function (callback) {\r\n                tokenListeners.push(callback);\r\n                // Make sure callback is called, asynchronously, in the absence of the auth module\r\n                setTimeout(function () { return callback(null); }, 0);\r\n            },\r\n            removeAuthTokenListener: function (callback) {\r\n                tokenListeners = tokenListeners.filter(function (listener) { return listener !== callback; });\r\n            }\r\n        };\r\n    }\r\n    Object.defineProperty(FirebaseAppImpl.prototype, \"automaticDataCollectionEnabled\", {\r\n        get: function () {\r\n            this.checkDestroyed_();\r\n            return this._automaticDataCollectionEnabled;\r\n        },\r\n        set: function (val) {\r\n            this.checkDestroyed_();\r\n            this._automaticDataCollectionEnabled = val;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(FirebaseAppImpl.prototype, \"name\", {\r\n        get: function () {\r\n            this.checkDestroyed_();\r\n            return this.name_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    Object.defineProperty(FirebaseAppImpl.prototype, \"options\", {\r\n        get: function () {\r\n            this.checkDestroyed_();\r\n            return this.options_;\r\n        },\r\n        enumerable: true,\r\n        configurable: true\r\n    });\r\n    FirebaseAppImpl.prototype.delete = function () {\r\n        var _this = this;\r\n        return new Promise(function (resolve) {\r\n            _this.checkDestroyed_();\r\n            resolve();\r\n        })\r\n            .then(function () {\r\n            _this.firebase_.INTERNAL.removeApp(_this.name_);\r\n            var services = [];\r\n            Object.keys(_this.services_).forEach(function (serviceKey) {\r\n                Object.keys(_this.services_[serviceKey]).forEach(function (instanceKey) {\r\n                    services.push(_this.services_[serviceKey][instanceKey]);\r\n                });\r\n            });\r\n            return Promise.all(services.map(function (service) {\r\n                return service.INTERNAL.delete();\r\n            }));\r\n        })\r\n            .then(function () {\r\n            _this.isDeleted_ = true;\r\n            _this.services_ = {};\r\n        });\r\n    };\r\n    /**\r\n     * Return a service instance associated with this app (creating it\r\n     * on demand), identified by the passed instanceIdentifier.\r\n     *\r\n     * NOTE: Currently storage is the only one that is leveraging this\r\n     * functionality. They invoke it by calling:\r\n     *\r\n     * ```javascript\r\n     * firebase.app().storage('STORAGE BUCKET ID')\r\n     * ```\r\n     *\r\n     * The service name is passed to this already\r\n     * @internal\r\n     */\r\n    FirebaseAppImpl.prototype._getService = function (name, instanceIdentifier) {\r\n        if (instanceIdentifier === void 0) { instanceIdentifier = DEFAULT_ENTRY_NAME; }\r\n        this.checkDestroyed_();\r\n        if (!this.services_[name]) {\r\n            this.services_[name] = {};\r\n        }\r\n        if (!this.services_[name][instanceIdentifier]) {\r\n            /**\r\n             * If a custom instance has been defined (i.e. not '[DEFAULT]')\r\n             * then we will pass that instance on, otherwise we pass `null`\r\n             */\r\n            var instanceSpecifier = instanceIdentifier !== DEFAULT_ENTRY_NAME\r\n                ? instanceIdentifier\r\n                : undefined;\r\n            var service = this.firebase_.INTERNAL.factories[name](this, this.extendApp.bind(this), instanceSpecifier);\r\n            this.services_[name][instanceIdentifier] = service;\r\n        }\r\n        return this.services_[name][instanceIdentifier];\r\n    };\r\n    /**\r\n     * Callback function used to extend an App instance at the time\r\n     * of service instance creation.\r\n     */\r\n    FirebaseAppImpl.prototype.extendApp = function (props) {\r\n        var _this = this;\r\n        // Copy the object onto the FirebaseAppImpl prototype\r\n        util.deepExtend(this, props);\r\n        /**\r\n         * If the app has overwritten the addAuthTokenListener stub, forward\r\n         * the active token listeners on to the true fxn.\r\n         *\r\n         * TODO: This function is required due to our current module\r\n         * structure. Once we are able to rely strictly upon a single module\r\n         * implementation, this code should be refactored and Auth should\r\n         * provide these stubs and the upgrade logic\r\n         */\r\n        if (props.INTERNAL && props.INTERNAL.addAuthTokenListener) {\r\n            tokenListeners.forEach(function (listener) {\r\n                _this.INTERNAL.addAuthTokenListener(listener);\r\n            });\r\n            tokenListeners = [];\r\n        }\r\n    };\r\n    /**\r\n     * This function will throw an Error if the App has already been deleted -\r\n     * use before performing API actions on the App.\r\n     */\r\n    FirebaseAppImpl.prototype.checkDestroyed_ = function () {\r\n        if (this.isDeleted_) {\r\n            error('app-deleted', { name: this.name_ });\r\n        }\r\n    };\r\n    return FirebaseAppImpl;\r\n}());\r\n// Prevent dead-code elimination of these methods w/o invalid property\r\n// copying.\r\n(FirebaseAppImpl.prototype.name && FirebaseAppImpl.prototype.options) ||\r\n    FirebaseAppImpl.prototype.delete ||\r\n    console.log('dc');\r\n/**\r\n * Return a firebase namespace object.\r\n *\r\n * In production, this will be called exactly once and the result\r\n * assigned to the 'firebase' global.  It may be called multiple times\r\n * in unit tests.\r\n */\r\nfunction createFirebaseNamespace() {\r\n    var apps_ = {};\r\n    var factories = {};\r\n    var appHooks = {};\r\n    // A namespace is a plain JavaScript Object.\r\n    var namespace = {\r\n        // Hack to prevent Babel from modifying the object returned\r\n        // as the firebase namespace.\r\n        __esModule: true,\r\n        initializeApp: initializeApp,\r\n        app: app,\r\n        apps: null,\r\n        Promise: Promise,\r\n        SDK_VERSION: '5.8.6',\r\n        INTERNAL: {\r\n            registerService: registerService,\r\n            createFirebaseNamespace: createFirebaseNamespace,\r\n            extendNamespace: extendNamespace,\r\n            createSubscribe: util.createSubscribe,\r\n            ErrorFactory: util.ErrorFactory,\r\n            removeApp: removeApp,\r\n            factories: factories,\r\n            useAsService: useAsService,\r\n            Promise: Promise,\r\n            deepExtend: util.deepExtend\r\n        }\r\n    };\r\n    // Inject a circular default export to allow Babel users who were previously\r\n    // using:\r\n    //\r\n    //   import firebase from 'firebase';\r\n    //   which becomes: var firebase = require('firebase').default;\r\n    //\r\n    // instead of\r\n    //\r\n    //   import * as firebase from 'firebase';\r\n    //   which becomes: var firebase = require('firebase');\r\n    util.patchProperty(namespace, 'default', namespace);\r\n    // firebase.apps is a read-only getter.\r\n    Object.defineProperty(namespace, 'apps', {\r\n        get: getApps\r\n    });\r\n    /**\r\n     * Called by App.delete() - but before any services associated with the App\r\n     * are deleted.\r\n     */\r\n    function removeApp(name) {\r\n        var app = apps_[name];\r\n        callAppHooks(app, 'delete');\r\n        delete apps_[name];\r\n    }\r\n    /**\r\n     * Get the App object for a given name (or DEFAULT).\r\n     */\r\n    function app(name) {\r\n        name = name || DEFAULT_ENTRY_NAME;\r\n        if (!contains(apps_, name)) {\r\n            error('no-app', { name: name });\r\n        }\r\n        return apps_[name];\r\n    }\r\n    util.patchProperty(app, 'App', FirebaseAppImpl);\r\n    function initializeApp(options, rawConfig) {\r\n        if (rawConfig === void 0) { rawConfig = {}; }\r\n        if (typeof rawConfig !== 'object' || rawConfig === null) {\r\n            var name_1 = rawConfig;\r\n            rawConfig = { name: name_1 };\r\n        }\r\n        var config = rawConfig;\r\n        if (config.name === undefined) {\r\n            config.name = DEFAULT_ENTRY_NAME;\r\n        }\r\n        var name = config.name;\r\n        if (typeof name !== 'string' || !name) {\r\n            error('bad-app-name', { name: name + '' });\r\n        }\r\n        if (contains(apps_, name)) {\r\n            error('duplicate-app', { name: name });\r\n        }\r\n        var app = new FirebaseAppImpl(options, config, namespace);\r\n        apps_[name] = app;\r\n        callAppHooks(app, 'create');\r\n        return app;\r\n    }\r\n    /*\r\n     * Return an array of all the non-deleted FirebaseApps.\r\n     */\r\n    function getApps() {\r\n        // Make a copy so caller cannot mutate the apps list.\r\n        return Object.keys(apps_).map(function (name) { return apps_[name]; });\r\n    }\r\n    /*\r\n     * Register a Firebase Service.\r\n     *\r\n     * firebase.INTERNAL.registerService()\r\n     *\r\n     * TODO: Implement serviceProperties.\r\n     */\r\n    function registerService(name, createService, serviceProperties, appHook, allowMultipleInstances) {\r\n        // Cannot re-register a service that already exists\r\n        if (factories[name]) {\r\n            error('duplicate-service', { name: name });\r\n        }\r\n        // Capture the service factory for later service instantiation\r\n        factories[name] = createService;\r\n        // Capture the appHook, if passed\r\n        if (appHook) {\r\n            appHooks[name] = appHook;\r\n            // Run the **new** app hook on all existing apps\r\n            getApps().forEach(function (app) {\r\n                appHook('create', app);\r\n            });\r\n        }\r\n        // The Service namespace is an accessor function ...\r\n        var serviceNamespace = function (appArg) {\r\n            if (appArg === void 0) { appArg = app(); }\r\n            if (typeof appArg[name] !== 'function') {\r\n                // Invalid argument.\r\n                // This happens in the following case: firebase.storage('gs:/')\r\n                error('invalid-app-argument', { name: name });\r\n            }\r\n            // Forward service instance lookup to the FirebaseApp.\r\n            return appArg[name]();\r\n        };\r\n        // ... and a container for service-level properties.\r\n        if (serviceProperties !== undefined) {\r\n            util.deepExtend(serviceNamespace, serviceProperties);\r\n        }\r\n        // Monkey-patch the serviceNamespace onto the firebase namespace\r\n        namespace[name] = serviceNamespace;\r\n        // Patch the FirebaseAppImpl prototype\r\n        FirebaseAppImpl.prototype[name] = function () {\r\n            var args = [];\r\n            for (var _i = 0; _i < arguments.length; _i++) {\r\n                args[_i] = arguments[_i];\r\n            }\r\n            var serviceFxn = this._getService.bind(this, name);\r\n            return serviceFxn.apply(this, allowMultipleInstances ? args : []);\r\n        };\r\n        return serviceNamespace;\r\n    }\r\n    /**\r\n     * Patch the top-level firebase namespace with additional properties.\r\n     *\r\n     * firebase.INTERNAL.extendNamespace()\r\n     */\r\n    function extendNamespace(props) {\r\n        util.deepExtend(namespace, props);\r\n    }\r\n    function callAppHooks(app, eventName) {\r\n        Object.keys(factories).forEach(function (serviceName) {\r\n            // Ignore virtual services\r\n            var factoryName = useAsService(app, serviceName);\r\n            if (factoryName === null) {\r\n                return;\r\n            }\r\n            if (appHooks[factoryName]) {\r\n                appHooks[factoryName](eventName, app);\r\n            }\r\n        });\r\n    }\r\n    // Map the requested service to a registered service name\r\n    // (used to map auth to serverAuth service when needed).\r\n    function useAsService(app, name) {\r\n        if (name === 'serverAuth') {\r\n            return null;\r\n        }\r\n        var useService = name;\r\n        var options = app.options;\r\n        return useService;\r\n    }\r\n    return namespace;\r\n}\r\nfunction error(code, args) {\r\n    throw appErrors.create(code, args);\r\n}\r\n// TypeScript does not support non-string indexes!\r\n// let errors: {[code: AppError: string} = {\r\nvar errors = {\r\n    'no-app': \"No Firebase App '{$name}' has been created - \" +\r\n        'call Firebase App.initializeApp()',\r\n    'bad-app-name': \"Illegal App name: '{$name}\",\r\n    'duplicate-app': \"Firebase App named '{$name}' already exists\",\r\n    'app-deleted': \"Firebase App named '{$name}' already deleted\",\r\n    'duplicate-service': \"Firebase service named '{$name}' already registered\",\r\n    'sa-not-supported': 'Initializing the Firebase SDK with a service ' +\r\n        'account is only allowed in a Node.js environment. On client ' +\r\n        'devices, you should instead initialize the SDK with an api key and ' +\r\n        'auth domain',\r\n    'invalid-app-argument': 'firebase.{$name}() takes either no argument or a ' +\r\n        'Firebase App instance.'\r\n};\r\nvar appErrors = new util.ErrorFactory('app', 'Firebase', errors);\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Node detection logic from: https://github.com/iliakan/detect-node/\r\nvar isNode = false;\r\ntry {\r\n    isNode =\r\n        Object.prototype.toString.call(global.process) === '[object process]';\r\n}\r\ncatch (e) { }\r\nisNode &&\r\n    console.warn(\"\\nWarning: This is a browser-targeted Firebase bundle but it appears it is being\\nrun in a Node environment.  If running in a Node environment, make sure you\\nare using the bundle specified by the \\\"main\\\" field in package.json.\\n\\nIf you are using Webpack, you can specify \\\"main\\\" as the first item in\\n\\\"resolve.mainFields\\\":\\nhttps://webpack.js.org/configuration/resolve/#resolvemainfields\\n\\nIf using Rollup, use the rollup-plugin-node-resolve plugin and set \\\"module\\\"\\nto false and \\\"main\\\" to true:\\nhttps://github.com/rollup/rollup-plugin-node-resolve\\n\");\r\nvar firebase = createFirebaseNamespace();\n\nexports.firebase = firebase;\nexports.default = firebase;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/app/dist/index.cjs.js","exports.f = Object.getOwnPropertySymbols;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-gops.js","require('../../modules/es6.symbol');\nrequire('../../modules/es6.object.to-string');\nrequire('../../modules/es7.symbol.async-iterator');\nrequire('../../modules/es7.symbol.observable');\nmodule.exports = require('../../modules/_core').Symbol;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/fn/symbol/index.js","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.TopAppBar = exports.TopAppBarTitle = exports.TopAppBarIcon = exports.TopAppBarSection = exports.TopAppBarRow = void 0;\n\nvar _get2 = _interopRequireDefault(require(\"@babel/runtime/helpers/get\"));\n\nvar _classCallCheck2 = _interopRequireDefault(require(\"@babel/runtime/helpers/classCallCheck\"));\n\nvar _createClass2 = _interopRequireDefault(require(\"@babel/runtime/helpers/createClass\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(require(\"@babel/runtime/helpers/possibleConstructorReturn\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(require(\"@babel/runtime/helpers/getPrototypeOf\"));\n\nvar _inherits2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inherits\"));\n\nvar _typeof2 = _interopRequireDefault(require(\"@babel/runtime/helpers/typeof\"));\n\nvar _topAppBar = require(\"@material/top-app-bar\");\n\nvar _bindDecorator = require(\"bind-decorator\");\n\nvar _preact = require(\"preact\");\n\nvar _MaterialComponent6 = _interopRequireDefault(require(\"../Base/MaterialComponent\"));\n\nvar __decorate = void 0 && (void 0).__decorate || function (decorators, target, key, desc) {\n  var c = arguments.length,\n      r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc,\n      d;\n  if ((typeof Reflect === \"undefined\" ? \"undefined\" : (0, _typeof2.default)(Reflect)) === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);else for (var i = decorators.length - 1; i >= 0; i--) {\n    if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n  }\n  return c > 3 && r && Object.defineProperty(target, key, r), r;\n};\n\nvar TopAppBarRow =\n/*#__PURE__*/\nfunction (_MaterialComponent) {\n  (0, _inherits2.default)(TopAppBarRow, _MaterialComponent);\n\n  function TopAppBarRow() {\n    var _this;\n\n    (0, _classCallCheck2.default)(this, TopAppBarRow);\n    _this = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarRow).apply(this, arguments));\n    _this.componentName = 'top-app-bar__row';\n    _this.mdcProps = [];\n    return _this;\n  }\n\n  (0, _createClass2.default)(TopAppBarRow, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"div\", Object.assign({}, props), this.props.children);\n    }\n  }]);\n  return TopAppBarRow;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarRow = TopAppBarRow;\n\nvar TopAppBarSection =\n/*#__PURE__*/\nfunction (_MaterialComponent2) {\n  (0, _inherits2.default)(TopAppBarSection, _MaterialComponent2);\n\n  function TopAppBarSection() {\n    var _this2;\n\n    (0, _classCallCheck2.default)(this, TopAppBarSection);\n    _this2 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarSection).apply(this, arguments));\n    _this2.componentName = 'top-app-bar__section';\n    _this2.mdcProps = ['align-start', 'align-end'];\n    return _this2;\n  }\n\n  (0, _createClass2.default)(TopAppBarSection, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"section\", Object.assign({}, props), props.children);\n    }\n  }]);\n  return TopAppBarSection;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarSection = TopAppBarSection;\n\nvar TopAppBarIcon =\n/*#__PURE__*/\nfunction (_MaterialComponent3) {\n  (0, _inherits2.default)(TopAppBarIcon, _MaterialComponent3);\n\n  function TopAppBarIcon() {\n    var _this3;\n\n    (0, _classCallCheck2.default)(this, TopAppBarIcon);\n    _this3 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarIcon).apply(this, arguments));\n    _this3.componentName = 'top-app-bar__icon';\n    _this3.mdcProps = [];\n    return _this3;\n  }\n\n  (0, _createClass2.default)(TopAppBarIcon, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      var className = props.navigation ? 'material-icons mdc-top-app-bar__navigation-icon' : 'material-icons';\n      return (0, _preact.h)(\"a\", Object.assign({\n        className: className\n      }, props), props.children);\n    }\n  }]);\n  return TopAppBarIcon;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarIcon = TopAppBarIcon;\n\nvar TopAppBarTitle =\n/*#__PURE__*/\nfunction (_MaterialComponent4) {\n  (0, _inherits2.default)(TopAppBarTitle, _MaterialComponent4);\n\n  function TopAppBarTitle() {\n    var _this4;\n\n    (0, _classCallCheck2.default)(this, TopAppBarTitle);\n    _this4 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBarTitle).apply(this, arguments));\n    _this4.componentName = 'top-app-bar__title';\n    _this4.mdcProps = [];\n    return _this4;\n  }\n\n  (0, _createClass2.default)(TopAppBarTitle, [{\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"span\", Object.assign({}, props), props.children);\n    }\n  }]);\n  return TopAppBarTitle;\n}(_MaterialComponent6.default);\n\nexports.TopAppBarTitle = TopAppBarTitle;\n\nvar TopAppBar =\n/*#__PURE__*/\nfunction (_MaterialComponent5) {\n  (0, _inherits2.default)(TopAppBar, _MaterialComponent5);\n\n  function TopAppBar() {\n    var _this5;\n\n    (0, _classCallCheck2.default)(this, TopAppBar);\n    _this5 = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(TopAppBar).apply(this, arguments));\n    _this5.componentName = 'top-app-bar';\n    _this5.mdcProps = ['short', 'short-collapsed', 'fixed', 'prominent'];\n    return _this5;\n  }\n\n  (0, _createClass2.default)(TopAppBar, [{\n    key: \"componentDidMount\",\n    value: function componentDidMount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(TopAppBar.prototype), \"componentDidMount\", this).call(this);\n\n      if (this.control) {\n        var comp = new _topAppBar.MDCTopAppBar(this.control);\n        comp.listen('MDCTopAppBar:nav', this.onNav);\n        this.MDComponent = comp;\n      }\n    }\n  }, {\n    key: \"componentWillUnmount\",\n    value: function componentWillUnmount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(TopAppBar.prototype), \"componentWillUnmount\", this).call(this);\n\n      if (this.MDComponent) {\n        this.MDComponent.unlisten('MDCTopAppBar:nav', this.onNav);\n        this.MDComponent.destroy();\n      }\n    }\n  }, {\n    key: \"onNav\",\n    value: function onNav(e) {\n      if (this.props.onNav) {\n        this.props.onNav(e);\n      }\n    }\n  }, {\n    key: \"materialDom\",\n    value: function materialDom(props) {\n      return (0, _preact.h)(\"header\", Object.assign({\n        ref: this.setControlRef\n      }, props), props.children);\n    }\n  }]);\n  return TopAppBar;\n}(_MaterialComponent6.default);\n\nexports.TopAppBar = TopAppBar;\n\n__decorate([_bindDecorator.bind], TopAppBar.prototype, \"onNav\", null);\n\nvar default_1 =\n/*#__PURE__*/\nfunction (_TopAppBar) {\n  (0, _inherits2.default)(default_1, _TopAppBar);\n\n  function default_1() {\n    (0, _classCallCheck2.default)(this, default_1);\n    return (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(default_1).apply(this, arguments));\n  }\n\n  return default_1;\n}(TopAppBar);\n\nexports.default = default_1;\ndefault_1.Section = TopAppBarSection;\ndefault_1.Icon = TopAppBarIcon;\ndefault_1.Title = TopAppBarTitle;\ndefault_1.Row = TopAppBarRow;\n//# sourceMappingURL=index.js.map\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-material-components/TopAppBar/index.js","// 22.1.3.31 Array.prototype[@@unscopables]\nvar UNSCOPABLES = require('./_wks')('unscopables');\nvar ArrayProto = Array.prototype;\nif (ArrayProto[UNSCOPABLES] == undefined) require('./_hide')(ArrayProto, UNSCOPABLES, {});\nmodule.exports = function (key) {\n  ArrayProto[UNSCOPABLES][key] = true;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_add-to-unscopables.js","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nvar constants;\n(function (constants) {\n    constants.typeOfFunction = 'function';\n    constants.boolTrue = true;\n})(constants || (constants = {}));\nfunction bind(target, propertyKey, descriptor) {\n    if (!descriptor || (typeof descriptor.value !== constants.typeOfFunction)) {\n        throw new TypeError(\"Only methods can be decorated with @bind. <\" + propertyKey + \"> is not a method!\");\n    }\n    return {\n        configurable: constants.boolTrue,\n        get: function () {\n            var bound = descriptor.value.bind(this);\n            // Credits to https://github.com/andreypopp/autobind-decorator for memoizing the result of bind against a symbol on the instance.\n            Object.defineProperty(this, propertyKey, {\n                value: bound,\n                configurable: constants.boolTrue,\n                writable: constants.boolTrue\n            });\n            return bound;\n        }\n    };\n}\nexports.bind = bind;\nexports.default = bind;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/bind-decorator/index.js","// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)\nvar $keys = require('./_object-keys-internal');\nvar hiddenKeys = require('./_enum-bug-keys').concat('length', 'prototype');\n\nexports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {\n  return $keys(O, hiddenKeys);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-gopn.js","// 7.2.2 IsArray(argument)\nvar cof = require('./_cof');\nmodule.exports = Array.isArray || function isArray(arg) {\n  return cof(arg) == 'Array';\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_is-array.js","// 7.2.1 RequireObjectCoercible(argument)\nmodule.exports = function (it) {\n  if (it == undefined) throw TypeError(\"Can't call method on  \" + it);\n  return it;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_defined.js","var pIE = require('./_object-pie');\nvar createDesc = require('./_property-desc');\nvar toIObject = require('./_to-iobject');\nvar toPrimitive = require('./_to-primitive');\nvar has = require('./_has');\nvar IE8_DOM_DEFINE = require('./_ie8-dom-define');\nvar gOPD = Object.getOwnPropertyDescriptor;\n\nexports.f = require('./_descriptors') ? gOPD : function getOwnPropertyDescriptor(O, P) {\n  O = toIObject(O);\n  P = toPrimitive(P, true);\n  if (IE8_DOM_DEFINE) try {\n    return gOPD(O, P);\n  } catch (e) { /* empty */ }\n  if (has(O, P)) return createDesc(!pIE.f.call(O, P), O[P]);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-gopd.js","'use strict';\nvar toInteger = require('./_to-integer');\nvar defined = require('./_defined');\n\nmodule.exports = function repeat(count) {\n  var str = String(defined(this));\n  var res = '';\n  var n = toInteger(count);\n  if (n < 0 || n == Infinity) throw RangeError(\"Count can't be negative\");\n  for (;n > 0; (n >>>= 1) && (str += str)) if (n & 1) res += str;\n  return res;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_string-repeat.js","module.exports = function (it) {\n  if (typeof it != 'function') throw TypeError(it + ' is not a function!');\n  return it;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_a-function.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Stores result from supportsCssVariables to avoid redundant processing to detect CSS custom variable support.\n * @private {boolean|undefined}\n */\nlet supportsCssVariables_;\n\n/**\n * Stores result from applyPassive to avoid redundant processing to detect passive event listener support.\n * @private {boolean|undefined}\n */\nlet supportsPassive_;\n\n/**\n * @param {!Window} windowObj\n * @return {boolean}\n */\nfunction detectEdgePseudoVarBug(windowObj) {\n  // Detect versions of Edge with buggy var() support\n  // See: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/11495448/\n  const document = windowObj.document;\n  const node = document.createElement('div');\n  node.className = 'mdc-ripple-surface--test-edge-var-bug';\n  document.body.appendChild(node);\n\n  // The bug exists if ::before style ends up propagating to the parent element.\n  // Additionally, getComputedStyle returns null in iframes with display: \"none\" in Firefox,\n  // but Firefox is known to support CSS custom properties correctly.\n  // See: https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n  const computedStyle = windowObj.getComputedStyle(node);\n  const hasPseudoVarBug = computedStyle !== null && computedStyle.borderTopStyle === 'solid';\n  node.remove();\n  return hasPseudoVarBug;\n}\n\n/**\n * @param {!Window} windowObj\n * @param {boolean=} forceRefresh\n * @return {boolean|undefined}\n */\n\nfunction supportsCssVariables(windowObj, forceRefresh = false) {\n  let supportsCssVariables = supportsCssVariables_;\n  if (typeof supportsCssVariables_ === 'boolean' && !forceRefresh) {\n    return supportsCssVariables;\n  }\n\n  const supportsFunctionPresent = windowObj.CSS && typeof windowObj.CSS.supports === 'function';\n  if (!supportsFunctionPresent) {\n    return;\n  }\n\n  const explicitlySupportsCssVars = windowObj.CSS.supports('--css-vars', 'yes');\n  // See: https://bugs.webkit.org/show_bug.cgi?id=154669\n  // See: README section on Safari\n  const weAreFeatureDetectingSafari10plus = (\n    windowObj.CSS.supports('(--css-vars: yes)') &&\n    windowObj.CSS.supports('color', '#00000000')\n  );\n\n  if (explicitlySupportsCssVars || weAreFeatureDetectingSafari10plus) {\n    supportsCssVariables = !detectEdgePseudoVarBug(windowObj);\n  } else {\n    supportsCssVariables = false;\n  }\n\n  if (!forceRefresh) {\n    supportsCssVariables_ = supportsCssVariables;\n  }\n  return supportsCssVariables;\n}\n\n//\n/**\n * Determine whether the current browser supports passive event listeners, and if so, use them.\n * @param {!Window=} globalObj\n * @param {boolean=} forceRefresh\n * @return {boolean|{passive: boolean}}\n */\nfunction applyPassive(globalObj = window, forceRefresh = false) {\n  if (supportsPassive_ === undefined || forceRefresh) {\n    let isSupported = false;\n    try {\n      globalObj.document.addEventListener('test', null, {get passive() {\n        isSupported = true;\n      }});\n    } catch (e) { }\n\n    supportsPassive_ = isSupported;\n  }\n\n  return supportsPassive_ ? {passive: true} : false;\n}\n\n/**\n * @param {!Object} HTMLElementPrototype\n * @return {!Array<string>}\n */\nfunction getMatchesProperty(HTMLElementPrototype) {\n  return [\n    'webkitMatchesSelector', 'msMatchesSelector', 'matches',\n  ].filter((p) => p in HTMLElementPrototype).pop();\n}\n\n/**\n * @param {!Event} ev\n * @param {{x: number, y: number}} pageOffset\n * @param {!ClientRect} clientRect\n * @return {{x: number, y: number}}\n */\nfunction getNormalizedEventCoords(ev, pageOffset, clientRect) {\n  const {x, y} = pageOffset;\n  const documentX = x + clientRect.left;\n  const documentY = y + clientRect.top;\n\n  let normalizedX;\n  let normalizedY;\n  // Determine touch point relative to the ripple container.\n  if (ev.type === 'touchstart') {\n    normalizedX = ev.changedTouches[0].pageX - documentX;\n    normalizedY = ev.changedTouches[0].pageY - documentY;\n  } else {\n    normalizedX = ev.pageX - documentX;\n    normalizedY = ev.pageY - documentY;\n  }\n\n  return {x: normalizedX, y: normalizedY};\n}\n\nexport {supportsCssVariables, applyPassive, getMatchesProperty, getNormalizedEventCoords};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/ripple/util.js","// 9.4.2.3 ArraySpeciesCreate(originalArray, length)\nvar speciesConstructor = require('./_array-species-constructor');\n\nmodule.exports = function (original, length) {\n  return new (speciesConstructor(original))(length);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_array-species-create.js","// all enumerable object keys, includes symbols\nvar getKeys = require('./_object-keys');\nvar gOPS = require('./_object-gops');\nvar pIE = require('./_object-pie');\nmodule.exports = function (it) {\n  var result = getKeys(it);\n  var getSymbols = gOPS.f;\n  if (getSymbols) {\n    var symbols = getSymbols(it);\n    var isEnum = pIE.f;\n    var i = 0;\n    var key;\n    while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key);\n  } return result;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_enum-keys.js","var has = require('./_has');\nvar toIObject = require('./_to-iobject');\nvar arrayIndexOf = require('./_array-includes')(false);\nvar IE_PROTO = require('./_shared-key')('IE_PROTO');\n\nmodule.exports = function (object, names) {\n  var O = toIObject(object);\n  var i = 0;\n  var result = [];\n  var key;\n  for (key in O) if (key != IE_PROTO) has(O, key) && result.push(key);\n  // Don't enum bug & hidden keys\n  while (names.length > i) if (has(O, key = names[i++])) {\n    ~arrayIndexOf(result, key) || result.push(key);\n  }\n  return result;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-keys-internal.js","// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028\nvar global = module.exports = typeof window != 'undefined' && window.Math == Math\n  ? window : typeof self != 'undefined' && self.Math == Math ? self\n  // eslint-disable-next-line no-new-func\n  : Function('return this')();\nif (typeof __g == 'number') __g = global; // eslint-disable-line no-undef\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_global.js","export const SET_AUTH_USER = 'SET_AUTH_USER';\n\nexport const LOGIN = 'LOGIN';\nexport const LOGOUT = 'LOGOUT';\n\nexport const LOGIN_START = 'LOGIN_START';\nexport const LOGIN_SUCCESS = 'LOGIN_SUCCESS';\nexport const LOGIN_FAILURE = 'LOGIN_FAILURE';\n\nexport const LOGOUT_START = 'LOGOUT_START';\nexport const LOGOUT_SUCCESS = 'LOGOUT_SUCCESS';\nexport const LOGOUT_FAILURE = 'LOGOUT_FAILURE';\n\nexport const SET_ROUTE = 'SET_ROUTE';\n\nexport const SEND_MESSAGE = 'SEND_MESSAGE';\nexport const RECEIVE_MESSAGE = 'RECEIVE_MESSAGE';\nexport const REMOVE_MESSAGE = 'REMOVE_MESSAGE';\n\nexport const PUBLISH_QUESTION = 'PUBLISH_QUESTION';\nexport const UNPUBLISH_QUESTION = 'UNPUBLISH_QUESTION';\nexport const RECEIVE_QUESTION = 'RECEIVE_QUESTION';\nexport const REMOVE_QUESTION = 'REMOVE_QUESTION';\n\nexport const SET_CHANNEL = 'SET_CHANNEL';\n\nexport const MESSAGE = 'MESSAGE';\nexport const HAND_RAISE = 'HAND_RAISE';\n\nexport const SET_AVATAR_STATUS = 'SET_AVATAR_STATUS';\n\n\n// WEBPACK FOOTER //\n// ./constants/index.js","var isObject = require('./_is-object');\nvar document = require('./_global').document;\n// typeof document.createElement is 'object' in old IE\nvar is = isObject(document) && isObject(document.createElement);\nmodule.exports = function (it) {\n  return is ? document.createElement(it) : {};\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_dom-create.js","// 21.1.3.18 String.prototype.startsWith(searchString [, position ])\n'use strict';\nvar $export = require('./_export');\nvar toLength = require('./_to-length');\nvar context = require('./_string-context');\nvar STARTS_WITH = 'startsWith';\nvar $startsWith = ''[STARTS_WITH];\n\n$export($export.P + $export.F * require('./_fails-is-regexp')(STARTS_WITH), 'String', {\n  startsWith: function startsWith(searchString /* , position = 0 */) {\n    var that = context(this, searchString, STARTS_WITH);\n    var index = toLength(Math.min(arguments.length > 1 ? arguments[1] : undefined, that.length));\n    var search = String(searchString);\n    return $startsWith\n      ? $startsWith.call(that, search, index)\n      : that.slice(index, index + search.length) === search;\n  }\n});\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.string.starts-with.js","'use strict';\n\nexports.__esModule = true;\n\nexports.default = function (req) {\n\tfunction Async() {\n\t\t_preact.Component.call(this);\n\n\t\tlet b, old;\n\t\tthis.componentWillMount = () => {\n\t\t\tb = this.base = this.nextBase || this.__b;\n\t\t\treq(m => {\n\t\t\t\tthis.setState({ child: m.default || m });\n\t\t\t});\n\t\t};\n\n\t\tthis.shouldComponentUpdate = (_, nxt) => {\n\t\t\tnxt = nxt.child === void 0;\n\t\t\tif (nxt && old === void 0 && !!b) {\n\t\t\t\told = (0, _preact.h)(b.nodeName, { dangerouslySetInnerHTML: { __html: b.innerHTML } });\n\t\t\t} else {\n\t\t\t\told = '';\n\t\t\t}\n\t\t\treturn !nxt;\n\t\t};\n\n\t\tthis.render = (p, s) => s.child ? (0, _preact.h)(s.child, p) : old;\n\t}\n\t(Async.prototype = new _preact.Component()).constructor = Async;\n\treturn Async;\n};\n\nvar _preact = require('preact');\n\n\n// WEBPACK FOOTER //\n// /Users/seanrhea/.nvm/versions/node/v8.9.4/lib/node_modules/preact-cli/lib/components/async.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** @enum {string} */\nconst cssClasses = {\n  CHECKED: 'mdc-switch--checked',\n  DISABLED: 'mdc-switch--disabled',\n};\n\n/** @enum {string} */\nconst strings = {\n  NATIVE_CONTROL_SELECTOR: '.mdc-switch__native-control',\n  RIPPLE_SURFACE_SELECTOR: '.mdc-switch__thumb-underlay',\n};\n\n\nexport {cssClasses, strings};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/switch/constants.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/* eslint no-unused-vars: [2, {\"args\": \"none\"}] */\n\n/**\n * Adapter for MDC Switch. Provides an interface for managing\n * - classes\n * - dom\n *\n * Additionally, provides type information for the adapter to the Closure\n * compiler.\n *\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n *\n * @record\n */\nclass MDCSwitchAdapter {\n  /** @param {string} className */\n  addClass(className) {}\n\n  /** @param {string} className */\n  removeClass(className) {}\n\n  /** @param {boolean} checked */\n  setNativeControlChecked(checked) {}\n\n  /** @param {boolean} disabled */\n  setNativeControlDisabled(disabled) {}\n}\n\nexport default MDCSwitchAdapter;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/switch/adapter.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCFoundation from '@material/base/foundation';\nimport MDCSwitchAdapter from './adapter';\n/* eslint-enable no-unused-vars */\nimport {cssClasses, strings} from './constants';\n\n/**\n * @extends {MDCFoundation<!MDCSwitchAdapter>}\n */\nclass MDCSwitchFoundation extends MDCFoundation {\n  /** @return enum {string} */\n  static get strings() {\n    return strings;\n  }\n\n  /** @return enum {string} */\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  /** @return {!MDCSwitchAdapter} */\n  static get defaultAdapter() {\n    return /** @type {!MDCSwitchAdapter} */ ({\n      addClass: (/* className: string */) => {},\n      removeClass: (/* className: string */) => {},\n      setNativeControlChecked: (/* checked: boolean */) => {},\n      setNativeControlDisabled: (/* disabled: boolean */) => {},\n    });\n  }\n\n  constructor(adapter) {\n    super(Object.assign(MDCSwitchFoundation.defaultAdapter, adapter));\n  }\n\n  /** @param {boolean} checked */\n  setChecked(checked) {\n    this.adapter_.setNativeControlChecked(checked);\n    this.updateCheckedStyling_(checked);\n  }\n\n  /** @param {boolean} disabled */\n  setDisabled(disabled) {\n    this.adapter_.setNativeControlDisabled(disabled);\n    if (disabled) {\n      this.adapter_.addClass(cssClasses.DISABLED);\n    } else {\n      this.adapter_.removeClass(cssClasses.DISABLED);\n    }\n  }\n\n  /**\n   * Handles the change event for the switch native control.\n   * @param {!Event} evt\n   */\n  handleChange(evt) {\n    this.updateCheckedStyling_(evt.target.checked);\n  }\n\n  /**\n   * Updates the styling of the switch based on its checked state.\n   * @param {boolean} checked\n   * @private\n   */\n  updateCheckedStyling_(checked) {\n    if (checked) {\n      this.adapter_.addClass(cssClasses.CHECKED);\n    } else {\n      this.adapter_.removeClass(cssClasses.CHECKED);\n    }\n  }\n}\n\nexport default MDCSwitchFoundation;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/switch/foundation.js","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCComponent from '@material/base/component';\n/* eslint-disable no-unused-vars */\nimport {MDCSelectionControlState, MDCSelectionControl} from '@material/selection-control/index';\n/* eslint-enable no-unused-vars */\nimport MDCSwitchFoundation from './foundation';\nimport {MDCRipple, MDCRippleFoundation} from '@material/ripple/index';\nimport {getMatchesProperty} from '@material/ripple/util';\n\n/**\n * @extends MDCComponent<!MDCSwitchFoundation>\n * @implements {MDCSelectionControl}\n */\nclass MDCSwitch extends MDCComponent {\n  static attachTo(root) {\n    return new MDCSwitch(root);\n  }\n\n  constructor(...args) {\n    super(...args);\n\n    /** @private {!MDCRipple} */\n    this.ripple_ = this.initRipple_();\n\n    /** @private {!Function} */\n    this.changeHandler_;\n  }\n\n  destroy() {\n    super.destroy();\n    this.ripple_.destroy();\n    this.nativeControl_.removeEventListener('change', this.changeHandler_);\n  }\n\n  initialSyncWithDOM() {\n    this.changeHandler_ = this.foundation_.handleChange.bind(this.foundation_);\n    this.nativeControl_.addEventListener('change', this.changeHandler_);\n\n    // Sometimes the checked state of the input element is saved in the history.\n    // The switch styling should match the checked state of the input element.\n    // Do an initial sync between the native control and the foundation.\n    this.checked = this.checked;\n  }\n\n  /**\n   * Returns the state of the native control element, or null if the native control element is not present.\n   * @return {?MDCSelectionControlState}\n   * @private\n   */\n  get nativeControl_() {\n    const {NATIVE_CONTROL_SELECTOR} = MDCSwitchFoundation.strings;\n    const el = /** @type {?MDCSelectionControlState} */ (\n      this.root_.querySelector(NATIVE_CONTROL_SELECTOR));\n    return el;\n  }\n\n  /**\n   * @return {!MDCRipple}\n   * @private\n   */\n  initRipple_() {\n    const {RIPPLE_SURFACE_SELECTOR} = MDCSwitchFoundation.strings;\n    const rippleSurface = /** @type {!Element} */ (this.root_.querySelector(RIPPLE_SURFACE_SELECTOR));\n\n    const MATCHES = getMatchesProperty(HTMLElement.prototype);\n    const adapter = Object.assign(MDCRipple.createAdapter(this), {\n      isUnbounded: () => true,\n      isSurfaceActive: () => this.nativeControl_[MATCHES](':active'),\n      addClass: (className) => rippleSurface.classList.add(className),\n      removeClass: (className) => rippleSurface.classList.remove(className),\n      registerInteractionHandler: (type, handler) => this.nativeControl_.addEventListener(type, handler),\n      deregisterInteractionHandler: (type, handler) => this.nativeControl_.removeEventListener(type, handler),\n      updateCssVariable: (varName, value) => rippleSurface.style.setProperty(varName, value),\n      computeBoundingRect: () => rippleSurface.getBoundingClientRect(),\n    });\n    const foundation = new MDCRippleFoundation(adapter);\n    return new MDCRipple(this.root_, foundation);\n  }\n\n  /** @return {!MDCSwitchFoundation} */\n  getDefaultFoundation() {\n    return new MDCSwitchFoundation({\n      addClass: (className) => this.root_.classList.add(className),\n      removeClass: (className) => this.root_.classList.remove(className),\n      setNativeControlChecked: (checked) => this.nativeControl_.checked = checked,\n      setNativeControlDisabled: (disabled) => this.nativeControl_.disabled = disabled,\n    });\n  }\n\n  /** @return {!MDCRipple} */\n  get ripple() {\n    return this.ripple_;\n  }\n\n  /** @return {boolean} */\n  get checked() {\n    return this.nativeControl_.checked;\n  }\n\n  /** @param {boolean} checked */\n  set checked(checked) {\n    this.foundation_.setChecked(checked);\n  }\n\n  /** @return {boolean} */\n  get disabled() {\n    return this.nativeControl_.disabled;\n  }\n\n  /** @param {boolean} disabled */\n  set disabled(disabled) {\n    this.foundation_.setDisabled(disabled);\n  }\n}\n\nexport {MDCSwitchFoundation, MDCSwitch};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/switch/index.js","var id = 0;\nvar px = Math.random();\nmodule.exports = function (key) {\n  return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_uid.js","// 7.1.4 ToInteger\nvar ceil = Math.ceil;\nvar floor = Math.floor;\nmodule.exports = function (it) {\n  return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_to-integer.js","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation. All rights reserved.\r\nLicensed under the Apache License, Version 2.0 (the \"License\"); you may not use\r\nthis file except in compliance with the License. You may obtain a copy of the\r\nLicense at http://www.apache.org/licenses/LICENSE-2.0\r\n\r\nTHIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\r\nKIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED\r\nWARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,\r\nMERCHANTABLITY OR NON-INFRINGEMENT.\r\n\r\nSee the Apache Version 2.0 License for specific language governing permissions\r\nand limitations under the License.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = Object.setPrototypeOf ||\r\n    ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n    function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\r\n\r\nexport function __extends(d, b) {\r\n    extendStatics(d, b);\r\n    function __() { this.constructor = d; }\r\n    d.prototype = b === null ? 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(this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r);  }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { if (o[n]) i[n] = function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; }; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator];\r\n    return m ? m.call(o) : typeof __values === \"function\" ? __values(o) : o[Symbol.iterator]();\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\r\n    result.default = mod;\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/util/node_modules/tslib/tslib.es6.js","var global = require('./_global');\nvar core = require('./_core');\nvar LIBRARY = require('./_library');\nvar wksExt = require('./_wks-ext');\nvar defineProperty = require('./_object-dp').f;\nmodule.exports = function (name) {\n  var $Symbol = core.Symbol || (core.Symbol = LIBRARY ? {} : global.Symbol || {});\n  if (name.charAt(0) != '_' && !(name in $Symbol)) defineProperty($Symbol, name, { value: wksExt.f(name) });\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_wks-define.js","'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n\tvalue: true\n});\nexports.Link = exports.Match = undefined;\n\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar _preact = require('preact');\n\nvar _preactRouter = require('preact-router');\n\nfunction _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nvar Match = exports.Match = function (_Component) {\n\t_inherits(Match, _Component);\n\n\tfunction Match() {\n\t\tvar _temp, _this, _ret;\n\n\t\t_classCallCheck(this, Match);\n\n\t\tfor (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n\t\t\targs[_key] = arguments[_key];\n\t\t}\n\n\t\treturn _ret = (_temp = (_this = _possibleConstructorReturn(this, _Component.call.apply(_Component, [this].concat(args))), _this), _this.update = function (url) {\n\t\t\t_this.nextUrl = url;\n\t\t\t_this.setState({});\n\t\t}, _temp), _possibleConstructorReturn(_this, _ret);\n\t}\n\n\tMatch.prototype.componentDidMount = function componentDidMount() {\n\t\t_preactRouter.subscribers.push(this.update);\n\t};\n\n\tMatch.prototype.componentWillUnmount = function componentWillUnmount() {\n\t\t_preactRouter.subscribers.splice(_preactRouter.subscribers.indexOf(this.update) >>> 0, 1);\n\t};\n\n\tMatch.prototype.render = function render(props) {\n\t\tvar url = this.nextUrl || (0, _preactRouter.getCurrentUrl)(),\n\t\t    path = url.replace(/\\?.+$/, '');\n\t\tthis.nextUrl = null;\n\t\treturn props.children[0] && props.children[0]({\n\t\t\turl: url,\n\t\t\tpath: path,\n\t\t\tmatches: path === props.path\n\t\t});\n\t};\n\n\treturn Match;\n}(_preact.Component);\n\nvar Link = function Link(_ref) {\n\tvar activeClassName = _ref.activeClassName,\n\t    path = _ref.path,\n\t    props = _objectWithoutProperties(_ref, ['activeClassName', 'path']);\n\n\treturn (0, _preact.h)(\n\t\tMatch,\n\t\t{ path: path || props.href },\n\t\tfunction (_ref2) {\n\t\t\tvar matches = _ref2.matches;\n\t\t\treturn (0, _preact.h)(_preactRouter.Link, _extends({}, props, { 'class': [props.class || props.className, matches && activeClassName].filter(Boolean).join(' ') }));\n\t\t}\n\t);\n};\n\nexports.Link = Link;\nexports.default = Match;\n\nMatch.Link = Link;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-router/match.js","require('../../modules/es6.array.find-index');\nmodule.exports = require('../../modules/_core').Array.findIndex;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/fn/array/find-index.js","var MATCH = require('./_wks')('match');\nmodule.exports = function (KEY) {\n  var re = /./;\n  try {\n    '/./'[KEY](re);\n  } catch (e) {\n    try {\n      re[MATCH] = false;\n      return !'/./'[KEY](re);\n    } catch (f) { /* empty */ }\n  } return true;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_fails-is-regexp.js","// removed by extract-text-webpack-plugin\nmodule.exports = {\"header\":\"header__3QGkI\",\"greeting\":\"greeting__i3fa8\",\"settings\":\"settings__3USYQ\",\"active\":\"active__3gItZ\",\"login\":\"login__17b6Y\",\"logout\":\"logout__3mGXh\",\"logoutContainer\":\"logoutContainer__19fWw\",\"login_div\":\"login_div__3Tv6c\",\"avatar\":\"avatar__1eonJ\"};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./components/header/style.css\n// module id = u3et\n// module chunks = 7","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * @template A\n */\nclass MDCFoundation {\n  /** @return enum{cssClasses} */\n  static get cssClasses() {\n    // Classes extending MDCFoundation should implement this method to return an object which exports every\n    // CSS class the foundation class needs as a property. e.g. {ACTIVE: 'mdc-component--active'}\n    return {};\n  }\n\n  /** @return enum{strings} */\n  static get strings() {\n    // Classes extending MDCFoundation should implement this method to return an object which exports all\n    // semantic strings as constants. e.g. {ARIA_ROLE: 'tablist'}\n    return {};\n  }\n\n  /** @return enum{numbers} */\n  static get numbers() {\n    // Classes extending MDCFoundation should implement this method to return an object which exports all\n    // of its semantic numbers as constants. e.g. {ANIMATION_DELAY_MS: 350}\n    return {};\n  }\n\n  /** @return {!Object} */\n  static get defaultAdapter() {\n    // Classes extending MDCFoundation may choose to implement this getter in order to provide a convenient\n    // way of viewing the necessary methods of an adapter. In the future, this could also be used for adapter\n    // validation.\n    return {};\n  }\n\n  /**\n   * @param {A=} adapter\n   */\n  constructor(adapter = {}) {\n    /** @protected {!A} */\n    this.adapter_ = adapter;\n  }\n\n  init() {\n    // Subclasses should override this method to perform initialization routines (registering events, etc.)\n  }\n\n  destroy() {\n    // Subclasses should override this method to perform de-initialization routines (de-registering events, etc.)\n  }\n}\n\nexport default MDCFoundation;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/base/foundation.js","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.MaterialComponent = void 0;\n\nvar _classCallCheck2 = _interopRequireDefault(require(\"@babel/runtime/helpers/classCallCheck\"));\n\nvar _createClass2 = _interopRequireDefault(require(\"@babel/runtime/helpers/createClass\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(require(\"@babel/runtime/helpers/possibleConstructorReturn\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(require(\"@babel/runtime/helpers/getPrototypeOf\"));\n\nvar _inherits2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inherits\"));\n\nvar _typeof2 = _interopRequireDefault(require(\"@babel/runtime/helpers/typeof\"));\n\nvar _ripple = require(\"@material/ripple\");\n\nvar _bindDecorator = require(\"bind-decorator\");\n\nvar _preact = require(\"preact\");\n\nvar __decorate = void 0 && (void 0).__decorate || function (decorators, target, key, desc) {\n  var c = arguments.length,\n      r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc,\n      d;\n  if ((typeof Reflect === \"undefined\" ? \"undefined\" : (0, _typeof2.default)(Reflect)) === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);else for (var i = decorators.length - 1; i >= 0; i--) {\n    if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n  }\n  return c > 3 && r && Object.defineProperty(target, key, r), r;\n};\n\nvar doNotRemoveProps = ['disabled'];\n/**\n * Base class for every Material component in this package\n * NOTE: every component should add a ref by the name of `control` to its root dom for autoInit Properties\n *\n * @export\n * @class MaterialComponent\n * @extends {Component}\n */\n\nvar MaterialComponent =\n/*#__PURE__*/\nfunction (_Component) {\n  (0, _inherits2.default)(MaterialComponent, _Component);\n\n  function MaterialComponent() {\n    (0, _classCallCheck2.default)(this, MaterialComponent);\n    return (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(MaterialComponent).apply(this, arguments));\n  }\n\n  (0, _createClass2.default)(MaterialComponent, [{\n    key: \"render\",\n    value: function render(props) {\n      if (!this.classText) {\n        this.classText = this.buildClassName(props);\n      } // Fetch a VNode\n\n\n      var componentProps = props;\n      var userDefinedClasses = componentProps.className || componentProps.class || ''; // We delete class props and add them later in the final\n      // step so every component does not need to handle user specified classes.\n\n      if (componentProps.class) {\n        delete componentProps.class;\n      }\n\n      if (componentProps.className) {\n        delete componentProps.className;\n      }\n\n      var element = this.materialDom(componentProps);\n      element.attributes = element.attributes || {};\n      element.attributes.className = \"\".concat(userDefinedClasses, \" \").concat(this.getClassName(element)).split(' ').filter(function (value, index, self) {\n        return self.indexOf(value) === index && value !== '';\n      }) // Unique + exclude empty class names\n      .join(' '); // Clean this shit of proxy attributes\n\n      this.mdcProps.forEach(function (prop) {\n        // TODO: Fix this better\n        if (prop in doNotRemoveProps) {\n          return;\n        }\n\n        delete element.attributes[prop];\n      });\n      return element;\n    }\n    /** Attach the ripple effect */\n\n  }, {\n    key: \"componentDidMount\",\n    value: function componentDidMount() {\n      if (this.props.ripple && this.control) {\n        this.ripple = new _ripple.MDCRipple(this.control);\n      }\n    }\n  }, {\n    key: \"componentWillReceiveProps\",\n    value: function componentWillReceiveProps(nextProps) {\n      if (this.MDComponent && this.mdcNotifyProps) {\n        var _iteratorNormalCompletion = true;\n        var _didIteratorError = false;\n        var _iteratorError = undefined;\n\n        try {\n          for (var _iterator = this.mdcNotifyProps[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n            var prop = _step.value;\n\n            if (this.props[prop] !== nextProps[prop]) {\n              this.MDComponent[prop] = nextProps[prop];\n            }\n          }\n        } catch (err) {\n          _didIteratorError = true;\n          _iteratorError = err;\n        } finally {\n          try {\n            if (!_iteratorNormalCompletion && _iterator.return != null) {\n              _iterator.return();\n            }\n          } finally {\n            if (_didIteratorError) {\n              throw _iteratorError;\n            }\n          }\n        }\n      }\n\n      var _iteratorNormalCompletion2 = true;\n      var _didIteratorError2 = false;\n      var _iteratorError2 = undefined;\n\n      try {\n        for (var _iterator2 = this.mdcProps[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {\n          var _prop = _step2.value;\n\n          if (this.props[_prop] !== nextProps[_prop]) {\n            this.classText = this.buildClassName(nextProps);\n            break;\n          }\n        }\n      } catch (err) {\n        _didIteratorError2 = true;\n        _iteratorError2 = err;\n      } finally {\n        try {\n          if (!_iteratorNormalCompletion2 && _iterator2.return != null) {\n            _iterator2.return();\n          }\n        } finally {\n          if (_didIteratorError2) {\n            throw _iteratorError2;\n          }\n        }\n      }\n    }\n  }, {\n    key: \"componentWillUnmount\",\n    value: function componentWillUnmount() {\n      if (this.ripple) {\n        this.ripple.destroy();\n      }\n    }\n  }, {\n    key: \"afterComponentDidMount\",\n    value: function afterComponentDidMount() {\n      if (this.MDComponent && this.mdcNotifyProps) {\n        var _iteratorNormalCompletion3 = true;\n        var _didIteratorError3 = false;\n        var _iteratorError3 = undefined;\n\n        try {\n          for (var _iterator3 = this.mdcNotifyProps[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n            var prop = _step3.value;\n            this.MDComponent[prop] = this.props[prop];\n          }\n        } catch (err) {\n          _didIteratorError3 = true;\n          _iteratorError3 = err;\n        } finally {\n          try {\n            if (!_iteratorNormalCompletion3 && _iterator3.return != null) {\n              _iterator3.return();\n            }\n          } finally {\n            if (_didIteratorError3) {\n              throw _iteratorError3;\n            }\n          }\n        }\n      }\n    } // Shared setter for the root element ref\n\n  }, {\n    key: \"setControlRef\",\n    value: function setControlRef(control) {\n      this.control = control;\n    }\n    /** Build the className based on component names and mdc props */\n\n  }, {\n    key: \"buildClassName\",\n    value: function buildClassName(props) {\n      // Class name based on component name\n      var classText = 'mdc-' + this.componentName; // Loop over mdcProps to turn them into classNames\n\n      for (var propKey in props) {\n        if (props.hasOwnProperty(propKey)) {\n          var prop = props[propKey];\n\n          if (typeof prop === 'boolean' && prop) {\n            if (this.mdcProps.indexOf(propKey) !== -1) {\n              classText += \" mdc-\".concat(this.componentName, \"--\").concat(propKey);\n            }\n          }\n        }\n      }\n\n      return classText;\n    }\n    /** Returns the class name for element */\n\n  }, {\n    key: \"getClassName\",\n    value: function getClassName(element) {\n      if (!element) {\n        return '';\n      }\n\n      var attrs = element.attributes = element.attributes || {};\n      var classText = this.classText;\n\n      if (attrs.class) {\n        classText += ' ' + attrs.class;\n      }\n\n      if (attrs.className && attrs.className !== attrs.class) {\n        classText += ' ' + attrs.className;\n      }\n\n      return classText;\n    }\n  }]);\n  return MaterialComponent;\n}(_preact.Component);\n\nexports.MaterialComponent = MaterialComponent;\n\n__decorate([_bindDecorator.bind], MaterialComponent.prototype, \"setControlRef\", null);\n\nvar _default = MaterialComponent;\nexports.default = _default;\n//# sourceMappingURL=MaterialComponent.js.map\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-material-components/Base/MaterialComponent.js","import { combineReducers } from 'redux';\nimport { auth } from './../firebase';\nimport {\n\tSEND_MESSAGE,\n\tRECEIVE_MESSAGE,\n\tREMOVE_MESSAGE,\n\tPUBLISH_QUESTION,\n\tUNPUBLISH_QUESTION,\n\tRECEIVE_QUESTION,\n\tREMOVE_QUESTION,\n\tSET_ROUTE,\n\tLOGOUT,\n\tLOGIN_START,\n\tLOGIN_SUCCESS,\n\tLOGIN_FAILURE,\n\tSET_AUTH_USER,\n\tSET_AVATAR_STATUS,\n\tSET_CHANNEL\n} from './../constants';\n\n// TODO: Break these up. Remember, it's really only useful as a global\n// state item if it needs to be used in multiple places.\n// https://medium.com/@stowball/a-dummys-guide-to-redux-and-thunk-in-react-d8904a7005d3\n\n/*******************/\n/* CHANNEL REDUCER */\n/*******************/\n\nfunction channel(state = { channel: null }, action = {}) {\n\tswitch (action.type) {\n\t\tcase SET_CHANNEL:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tchannel: action.channel\n\t\t\t};\n\t\tdefault:\n\t\t\treturn {\n\t\t\t\t...state\n\t\t\t};\n\t}\n}\n\n/****************/\n/* CHAT REDUCER */\n/****************/\n\nconst initialChatState = {\n\tmessage: { author: { name: null, id: null }, text: null },\n\tmessages: []\n};\n\nfunction chatMessages(state = initialChatState, action = {}) {\n\tswitch (action.type) {\n\t\tcase SEND_MESSAGE:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tmessage: action.message\n\t\t\t};\n\t\tcase RECEIVE_MESSAGE:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tmessages: [action.message, ...state.messages]\n\t\t\t};\n\t\tcase REMOVE_MESSAGE:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tmessages: state.messages.filter(message => message.id !== action.message.id)\n\t\t\t};\n\t\tdefault:\n\t\t\treturn {\n\t\t\t\t...state\n\t\t\t};\n\t}\n}\n\n/********************/\n/* QUESTION REDUCER */\n/********************/\n\nconst initialQuestionsState = {\n\tquestions: [],\n\tpublished: false\n};\n\nfunction questions(state = initialQuestionsState, action = {}) {\n\tswitch (action.type) {\n\t\tcase PUBLISH_QUESTION:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tpublished: action.published\n\t\t\t};\n\t\tcase UNPUBLISH_QUESTION:\n\t\t\treturn {\n\t\t\t\t...state\n\t\t\t};\n\t\tcase RECEIVE_QUESTION:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tquestions: [action.question, ...state.questions]\n\t\t\t};\n\t\tcase REMOVE_QUESTION:\n\t\t\tconsole.log('removing question', action.question.id);\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tquestions: state.questions.filter(question => question.id !== action.question.id)\n\t\t\t};\n\n\n\t\tdefault:\n\t\t\treturn state;\n\t}\n}\n\n/*****************/\n/* ROUTE REDUCER */\n/*****************/\n\nconst initialRouteState = {\n\troute: null\n};\n\nfunction currentRoute (state = initialRouteState, action = {}) {\n\tswitch (action.type) {\n\t\tcase SET_ROUTE:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\troute: action.route\n\t\t\t};\n\t\tdefault:\n\t\t\treturn {\n\t\t\t\t...state\n\t\t\t};\n\t}\n}\n\n/*************************/\n/* AVATAR STATUS REDUCER */\n/*************************/\n\nconst initialAvatarStatusState = {\n\tstatus: null,\n\tdescription: null\n};\n\nfunction avatarStatus(state = initialAvatarStatusState, action = {}) {\n\tswitch (action.type) {\n\t\tcase SET_AVATAR_STATUS:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tstatus: action.payload.status,\n\t\t\t\tdescription: action.payload.description\n\t\t\t};\n\t\tdefault:\n\t\t\treturn state;\n\t}\n}\n\n/**************************/\n/* AUTHENTICATION REDUCER */\n/**************************/\n\nconst initialAuthState = {\n\tuser: null,\n\tuserDataRef: null,\n\terror: false\n};\n\nfunction authentication(state = initialAuthState, action = {}) {\n\tswitch (action.type) {\n\t\tcase LOGIN_START:\n\t\t\treturn {\n\t\t\t\t...state\n\t\t\t};\n\t\tcase SET_AUTH_USER:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tuser: action.user,\n\t\t\t\tuserDataRef: action.userDataRef,\n\t\t\t\terror: false\n\t\t\t};\n\t\tcase LOGIN_SUCCESS:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tuser: action.user,\n\t\t\t\tuserDataRef: action.userDataRef,\n\t\t\t\terror: false\n\t\t\t};\n\t\tcase LOGIN_FAILURE:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tuser: null,\n\t\t\t\tuserDataRef: null,\n\t\t\t\terror: true\n\t\t\t};\n\t\tcase LOGOUT:\n\t\t\treturn {\n\t\t\t\t...state,\n\t\t\t\tuser: null,\n\t\t\t\tuserDataRef: null,\n\t\t\t\terror: false\n\t\t\t};\n\t\tdefault:\n\t\t\treturn state;\n\t}\n}\n\n/****************/\n/* ROOT REDUCER */\n/****************/\n\nconst rootReducer = combineReducers({\n\tchannel,\n\tchatMessages,\n\tquestions,\n\tcurrentRoute,\n\tauthentication,\n\tavatarStatus\n});\n\nexport default rootReducer;\n\n\n// WEBPACK FOOTER //\n// ./reducers/index.js","function createThunkMiddleware(extraArgument) {\n  return function (_ref) {\n    var dispatch = _ref.dispatch,\n        getState = _ref.getState;\n    return function (next) {\n      return function (action) {\n        if (typeof action === 'function') {\n          return action(dispatch, getState, extraArgument);\n        }\n\n        return next(action);\n      };\n    };\n  };\n}\n\nvar thunk = createThunkMiddleware();\nthunk.withExtraArgument = createThunkMiddleware;\n\nexport default thunk;\n\n\n// WEBPACK FOOTER //\n// ../node_modules/redux-thunk/es/index.js","import { createStore, applyMiddleware } from 'redux';\nimport rootReducer from './../reducers';\nimport thunk from 'redux-thunk';\n\n// A thunk is a function that returns a function.\n// see https://github.com/reduxjs/redux-thunk\n// also: https://daveceddia.com/what-is-a-thunk/\nconst store = createStore(rootReducer, applyMiddleware(thunk));\n\nexport default store;\n\n\n\n\n// WEBPACK FOOTER //\n// ./store/index.js","var dP = require('./_object-dp');\nvar createDesc = require('./_property-desc');\nmodule.exports = require('./_descriptors') ? function (object, key, value) {\n  return dP.f(object, key, createDesc(1, value));\n} : function (object, key, value) {\n  object[key] = value;\n  return object;\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_hide.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/* eslint no-unused-vars: [2, {\"args\": \"none\"}] */\n\n/**\n * Adapter for MDC Ripple. Provides an interface for managing\n * - classes\n * - dom\n * - CSS variables\n * - position\n * - dimensions\n * - scroll position\n * - event handlers\n * - unbounded, active and disabled states\n *\n * Additionally, provides type information for the adapter to the Closure\n * compiler.\n *\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n *\n * @record\n */\nclass MDCRippleAdapter {\n  /** @return {boolean} */\n  browserSupportsCssVars() {}\n\n  /** @return {boolean} */\n  isUnbounded() {}\n\n  /** @return {boolean} */\n  isSurfaceActive() {}\n\n  /** @return {boolean} */\n  isSurfaceDisabled() {}\n\n  /** @param {string} className */\n  addClass(className) {}\n\n  /** @param {string} className */\n  removeClass(className) {}\n\n  /** @param {!EventTarget} target */\n  containsEventTarget(target) {}\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n  registerInteractionHandler(evtType, handler) {}\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n  deregisterInteractionHandler(evtType, handler) {}\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n  registerDocumentInteractionHandler(evtType, handler) {}\n\n  /**\n   * @param {string} evtType\n   * @param {!Function} handler\n   */\n  deregisterDocumentInteractionHandler(evtType, handler) {}\n\n  /**\n   * @param {!Function} handler\n   */\n  registerResizeHandler(handler) {}\n\n  /**\n   * @param {!Function} handler\n   */\n  deregisterResizeHandler(handler) {}\n\n  /**\n   * @param {string} varName\n   * @param {?number|string} value\n   */\n  updateCssVariable(varName, value) {}\n\n  /** @return {!ClientRect} */\n  computeBoundingRect() {}\n\n  /** @return {{x: number, y: number}} */\n  getWindowPageOffset() {}\n}\n\nexport default MDCRippleAdapter;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/ripple/adapter.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  // Ripple is a special case where the \"root\" component is really a \"mixin\" of sorts,\n  // given that it's an 'upgrade' to an existing component. That being said it is the root\n  // CSS class that all other CSS classes derive from.\n  ROOT: 'mdc-ripple-upgraded',\n  UNBOUNDED: 'mdc-ripple-upgraded--unbounded',\n  BG_FOCUSED: 'mdc-ripple-upgraded--background-focused',\n  FG_ACTIVATION: 'mdc-ripple-upgraded--foreground-activation',\n  FG_DEACTIVATION: 'mdc-ripple-upgraded--foreground-deactivation',\n};\n\nconst strings = {\n  VAR_LEFT: '--mdc-ripple-left',\n  VAR_TOP: '--mdc-ripple-top',\n  VAR_FG_SIZE: '--mdc-ripple-fg-size',\n  VAR_FG_SCALE: '--mdc-ripple-fg-scale',\n  VAR_FG_TRANSLATE_START: '--mdc-ripple-fg-translate-start',\n  VAR_FG_TRANSLATE_END: '--mdc-ripple-fg-translate-end',\n};\n\nconst numbers = {\n  PADDING: 10,\n  INITIAL_ORIGIN_SCALE: 0.6,\n  DEACTIVATION_TIMEOUT_MS: 225, // Corresponds to $mdc-ripple-translate-duration (i.e. activation animation duration)\n  FG_DEACTIVATION_MS: 150, // Corresponds to $mdc-ripple-fade-out-duration (i.e. deactivation animation duration)\n  TAP_DELAY_MS: 300, // Delay between touch and simulated mouse events on touch devices\n};\n\nexport {cssClasses, strings, numbers};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/ripple/constants.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCFoundation from '@material/base/foundation';\nimport MDCRippleAdapter from './adapter';\nimport {cssClasses, strings, numbers} from './constants';\nimport {getNormalizedEventCoords} from './util';\n\n/**\n * @typedef {{\n *   isActivated: (boolean|undefined),\n *   hasDeactivationUXRun: (boolean|undefined),\n *   wasActivatedByPointer: (boolean|undefined),\n *   wasElementMadeActive: (boolean|undefined),\n *   activationEvent: Event,\n *   isProgrammatic: (boolean|undefined)\n * }}\n */\nlet ActivationStateType;\n\n/**\n * @typedef {{\n *   activate: (string|undefined),\n *   deactivate: (string|undefined),\n *   focus: (string|undefined),\n *   blur: (string|undefined)\n * }}\n */\nlet ListenerInfoType;\n\n/**\n * @typedef {{\n *   activate: function(!Event),\n *   deactivate: function(!Event),\n *   focus: function(),\n *   blur: function()\n * }}\n */\nlet ListenersType;\n\n/**\n * @typedef {{\n *   x: number,\n *   y: number\n * }}\n */\nlet PointType;\n\n// Activation events registered on the root element of each instance for activation\nconst ACTIVATION_EVENT_TYPES = ['touchstart', 'pointerdown', 'mousedown', 'keydown'];\n\n// Deactivation events registered on documentElement when a pointer-related down event occurs\nconst POINTER_DEACTIVATION_EVENT_TYPES = ['touchend', 'pointerup', 'mouseup'];\n\n// Tracks activations that have occurred on the current frame, to avoid simultaneous nested activations\n/** @type {!Array<!EventTarget>} */\nlet activatedTargets = [];\n\n/**\n * @extends {MDCFoundation<!MDCRippleAdapter>}\n */\nclass MDCRippleFoundation extends MDCFoundation {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter() {\n    return {\n      browserSupportsCssVars: () => /* boolean - cached */ {},\n      isUnbounded: () => /* boolean */ {},\n      isSurfaceActive: () => /* boolean */ {},\n      isSurfaceDisabled: () => /* boolean */ {},\n      addClass: (/* className: string */) => {},\n      removeClass: (/* className: string */) => {},\n      containsEventTarget: (/* target: !EventTarget */) => {},\n      registerInteractionHandler: (/* evtType: string, handler: EventListener */) => {},\n      deregisterInteractionHandler: (/* evtType: string, handler: EventListener */) => {},\n      registerDocumentInteractionHandler: (/* evtType: string, handler: EventListener */) => {},\n      deregisterDocumentInteractionHandler: (/* evtType: string, handler: EventListener */) => {},\n      registerResizeHandler: (/* handler: EventListener */) => {},\n      deregisterResizeHandler: (/* handler: EventListener */) => {},\n      updateCssVariable: (/* varName: string, value: string */) => {},\n      computeBoundingRect: () => /* ClientRect */ {},\n      getWindowPageOffset: () => /* {x: number, y: number} */ {},\n    };\n  }\n\n  constructor(adapter) {\n    super(Object.assign(MDCRippleFoundation.defaultAdapter, adapter));\n\n    /** @private {number} */\n    this.layoutFrame_ = 0;\n\n    /** @private {!ClientRect} */\n    this.frame_ = /** @type {!ClientRect} */ ({width: 0, height: 0});\n\n    /** @private {!ActivationStateType} */\n    this.activationState_ = this.defaultActivationState_();\n\n    /** @private {number} */\n    this.initialSize_ = 0;\n\n    /** @private {number} */\n    this.maxRadius_ = 0;\n\n    /** @private {function(!Event)} */\n    this.activateHandler_ = (e) => this.activate_(e);\n\n    /** @private {function(!Event)} */\n    this.deactivateHandler_ = (e) => this.deactivate_(e);\n\n    /** @private {function(?Event=)} */\n    this.focusHandler_ = () => this.handleFocus();\n\n    /** @private {function(?Event=)} */\n    this.blurHandler_ = () => this.handleBlur();\n\n    /** @private {!Function} */\n    this.resizeHandler_ = () => this.layout();\n\n    /** @private {{left: number, top:number}} */\n    this.unboundedCoords_ = {\n      left: 0,\n      top: 0,\n    };\n\n    /** @private {number} */\n    this.fgScale_ = 0;\n\n    /** @private {number} */\n    this.activationTimer_ = 0;\n\n    /** @private {number} */\n    this.fgDeactivationRemovalTimer_ = 0;\n\n    /** @private {boolean} */\n    this.activationAnimationHasEnded_ = false;\n\n    /** @private {!Function} */\n    this.activationTimerCallback_ = () => {\n      this.activationAnimationHasEnded_ = true;\n      this.runDeactivationUXLogicIfReady_();\n    };\n\n    /** @private {?Event} */\n    this.previousActivationEvent_ = null;\n  }\n\n  /**\n   * We compute this property so that we are not querying information about the client\n   * until the point in time where the foundation requests it. This prevents scenarios where\n   * client-side feature-detection may happen too early, such as when components are rendered on the server\n   * and then initialized at mount time on the client.\n   * @return {boolean}\n   * @private\n   */\n  supportsPressRipple_() {\n    return this.adapter_.browserSupportsCssVars();\n  }\n\n  /**\n   * @return {!ActivationStateType}\n   */\n  defaultActivationState_() {\n    return {\n      isActivated: false,\n      hasDeactivationUXRun: false,\n      wasActivatedByPointer: false,\n      wasElementMadeActive: false,\n      activationEvent: null,\n      isProgrammatic: false,\n    };\n  }\n\n  /** @override */\n  init() {\n    const supportsPressRipple = this.supportsPressRipple_();\n\n    this.registerRootHandlers_(supportsPressRipple);\n\n    if (supportsPressRipple) {\n      const {ROOT, UNBOUNDED} = MDCRippleFoundation.cssClasses;\n      requestAnimationFrame(() => {\n        this.adapter_.addClass(ROOT);\n        if (this.adapter_.isUnbounded()) {\n          this.adapter_.addClass(UNBOUNDED);\n          // Unbounded ripples need layout logic applied immediately to set coordinates for both shade and ripple\n          this.layoutInternal_();\n        }\n      });\n    }\n  }\n\n  /** @override */\n  destroy() {\n    if (this.supportsPressRipple_()) {\n      if (this.activationTimer_) {\n        clearTimeout(this.activationTimer_);\n        this.activationTimer_ = 0;\n        this.adapter_.removeClass(MDCRippleFoundation.cssClasses.FG_ACTIVATION);\n      }\n\n      if (this.fgDeactivationRemovalTimer_) {\n        clearTimeout(this.fgDeactivationRemovalTimer_);\n        this.fgDeactivationRemovalTimer_ = 0;\n        this.adapter_.removeClass(MDCRippleFoundation.cssClasses.FG_DEACTIVATION);\n      }\n\n      const {ROOT, UNBOUNDED} = MDCRippleFoundation.cssClasses;\n      requestAnimationFrame(() => {\n        this.adapter_.removeClass(ROOT);\n        this.adapter_.removeClass(UNBOUNDED);\n        this.removeCssVars_();\n      });\n    }\n\n    this.deregisterRootHandlers_();\n    this.deregisterDeactivationHandlers_();\n  }\n\n  /**\n   * @param {boolean} supportsPressRipple Passed from init to save a redundant function call\n   * @private\n   */\n  registerRootHandlers_(supportsPressRipple) {\n    if (supportsPressRipple) {\n      ACTIVATION_EVENT_TYPES.forEach((type) => {\n        this.adapter_.registerInteractionHandler(type, this.activateHandler_);\n      });\n      if (this.adapter_.isUnbounded()) {\n        this.adapter_.registerResizeHandler(this.resizeHandler_);\n      }\n    }\n\n    this.adapter_.registerInteractionHandler('focus', this.focusHandler_);\n    this.adapter_.registerInteractionHandler('blur', this.blurHandler_);\n  }\n\n  /**\n   * @param {!Event} e\n   * @private\n   */\n  registerDeactivationHandlers_(e) {\n    if (e.type === 'keydown') {\n      this.adapter_.registerInteractionHandler('keyup', this.deactivateHandler_);\n    } else {\n      POINTER_DEACTIVATION_EVENT_TYPES.forEach((type) => {\n        this.adapter_.registerDocumentInteractionHandler(type, this.deactivateHandler_);\n      });\n    }\n  }\n\n  /** @private */\n  deregisterRootHandlers_() {\n    ACTIVATION_EVENT_TYPES.forEach((type) => {\n      this.adapter_.deregisterInteractionHandler(type, this.activateHandler_);\n    });\n    this.adapter_.deregisterInteractionHandler('focus', this.focusHandler_);\n    this.adapter_.deregisterInteractionHandler('blur', this.blurHandler_);\n\n    if (this.adapter_.isUnbounded()) {\n      this.adapter_.deregisterResizeHandler(this.resizeHandler_);\n    }\n  }\n\n  /** @private */\n  deregisterDeactivationHandlers_() {\n    this.adapter_.deregisterInteractionHandler('keyup', this.deactivateHandler_);\n    POINTER_DEACTIVATION_EVENT_TYPES.forEach((type) => {\n      this.adapter_.deregisterDocumentInteractionHandler(type, this.deactivateHandler_);\n    });\n  }\n\n  /** @private */\n  removeCssVars_() {\n    const {strings} = MDCRippleFoundation;\n    Object.keys(strings).forEach((k) => {\n      if (k.indexOf('VAR_') === 0) {\n        this.adapter_.updateCssVariable(strings[k], null);\n      }\n    });\n  }\n\n  /**\n   * @param {?Event} e\n   * @private\n   */\n  activate_(e) {\n    if (this.adapter_.isSurfaceDisabled()) {\n      return;\n    }\n\n    const activationState = this.activationState_;\n    if (activationState.isActivated) {\n      return;\n    }\n\n    // Avoid reacting to follow-on events fired by touch device after an already-processed user interaction\n    const previousActivationEvent = this.previousActivationEvent_;\n    const isSameInteraction = previousActivationEvent && e && previousActivationEvent.type !== e.type;\n    if (isSameInteraction) {\n      return;\n    }\n\n    activationState.isActivated = true;\n    activationState.isProgrammatic = e === null;\n    activationState.activationEvent = e;\n    activationState.wasActivatedByPointer = activationState.isProgrammatic ? false : (\n      e.type === 'mousedown' || e.type === 'touchstart' || e.type === 'pointerdown'\n    );\n\n    const hasActivatedChild =\n      e && activatedTargets.length > 0 && activatedTargets.some((target) => this.adapter_.containsEventTarget(target));\n    if (hasActivatedChild) {\n      // Immediately reset activation state, while preserving logic that prevents touch follow-on events\n      this.resetActivationState_();\n      return;\n    }\n\n    if (e) {\n      activatedTargets.push(/** @type {!EventTarget} */ (e.target));\n      this.registerDeactivationHandlers_(e);\n    }\n\n    activationState.wasElementMadeActive = this.checkElementMadeActive_(e);\n    if (activationState.wasElementMadeActive) {\n      this.animateActivation_();\n    }\n\n    requestAnimationFrame(() => {\n      // Reset array on next frame after the current event has had a chance to bubble to prevent ancestor ripples\n      activatedTargets = [];\n\n      if (!activationState.wasElementMadeActive && (e.key === ' ' || e.keyCode === 32)) {\n        // If space was pressed, try again within an rAF call to detect :active, because different UAs report\n        // active states inconsistently when they're called within event handling code:\n        // - https://bugs.chromium.org/p/chromium/issues/detail?id=635971\n        // - https://bugzilla.mozilla.org/show_bug.cgi?id=1293741\n        // We try first outside rAF to support Edge, which does not exhibit this problem, but will crash if a CSS\n        // variable is set within a rAF callback for a submit button interaction (#2241).\n        activationState.wasElementMadeActive = this.checkElementMadeActive_(e);\n        if (activationState.wasElementMadeActive) {\n          this.animateActivation_();\n        }\n      }\n\n      if (!activationState.wasElementMadeActive) {\n        // Reset activation state immediately if element was not made active.\n        this.activationState_ = this.defaultActivationState_();\n      }\n    });\n  }\n\n  /**\n   * @param {?Event} e\n   * @private\n   */\n  checkElementMadeActive_(e) {\n    return (e && e.type === 'keydown') ? this.adapter_.isSurfaceActive() : true;\n  }\n\n  /**\n   * @param {?Event=} event Optional event containing position information.\n   */\n  activate(event = null) {\n    this.activate_(event);\n  }\n\n  /** @private */\n  animateActivation_() {\n    const {VAR_FG_TRANSLATE_START, VAR_FG_TRANSLATE_END} = MDCRippleFoundation.strings;\n    const {FG_DEACTIVATION, FG_ACTIVATION} = MDCRippleFoundation.cssClasses;\n    const {DEACTIVATION_TIMEOUT_MS} = MDCRippleFoundation.numbers;\n\n    this.layoutInternal_();\n\n    let translateStart = '';\n    let translateEnd = '';\n\n    if (!this.adapter_.isUnbounded()) {\n      const {startPoint, endPoint} = this.getFgTranslationCoordinates_();\n      translateStart = `${startPoint.x}px, ${startPoint.y}px`;\n      translateEnd = `${endPoint.x}px, ${endPoint.y}px`;\n    }\n\n    this.adapter_.updateCssVariable(VAR_FG_TRANSLATE_START, translateStart);\n    this.adapter_.updateCssVariable(VAR_FG_TRANSLATE_END, translateEnd);\n    // Cancel any ongoing activation/deactivation animations\n    clearTimeout(this.activationTimer_);\n    clearTimeout(this.fgDeactivationRemovalTimer_);\n    this.rmBoundedActivationClasses_();\n    this.adapter_.removeClass(FG_DEACTIVATION);\n\n    // Force layout in order to re-trigger the animation.\n    this.adapter_.computeBoundingRect();\n    this.adapter_.addClass(FG_ACTIVATION);\n    this.activationTimer_ = setTimeout(() => this.activationTimerCallback_(), DEACTIVATION_TIMEOUT_MS);\n  }\n\n  /**\n   * @private\n   * @return {{startPoint: PointType, endPoint: PointType}}\n   */\n  getFgTranslationCoordinates_() {\n    const {activationEvent, wasActivatedByPointer} = this.activationState_;\n\n    let startPoint;\n    if (wasActivatedByPointer) {\n      startPoint = getNormalizedEventCoords(\n        /** @type {!Event} */ (activationEvent),\n        this.adapter_.getWindowPageOffset(), this.adapter_.computeBoundingRect()\n      );\n    } else {\n      startPoint = {\n        x: this.frame_.width / 2,\n        y: this.frame_.height / 2,\n      };\n    }\n    // Center the element around the start point.\n    startPoint = {\n      x: startPoint.x - (this.initialSize_ / 2),\n      y: startPoint.y - (this.initialSize_ / 2),\n    };\n\n    const endPoint = {\n      x: (this.frame_.width / 2) - (this.initialSize_ / 2),\n      y: (this.frame_.height / 2) - (this.initialSize_ / 2),\n    };\n\n    return {startPoint, endPoint};\n  }\n\n  /** @private */\n  runDeactivationUXLogicIfReady_() {\n    // This method is called both when a pointing device is released, and when the activation animation ends.\n    // The deactivation animation should only run after both of those occur.\n    const {FG_DEACTIVATION} = MDCRippleFoundation.cssClasses;\n    const {hasDeactivationUXRun, isActivated} = this.activationState_;\n    const activationHasEnded = hasDeactivationUXRun || !isActivated;\n\n    if (activationHasEnded && this.activationAnimationHasEnded_) {\n      this.rmBoundedActivationClasses_();\n      this.adapter_.addClass(FG_DEACTIVATION);\n      this.fgDeactivationRemovalTimer_ = setTimeout(() => {\n        this.adapter_.removeClass(FG_DEACTIVATION);\n      }, numbers.FG_DEACTIVATION_MS);\n    }\n  }\n\n  /** @private */\n  rmBoundedActivationClasses_() {\n    const {FG_ACTIVATION} = MDCRippleFoundation.cssClasses;\n    this.adapter_.removeClass(FG_ACTIVATION);\n    this.activationAnimationHasEnded_ = false;\n    this.adapter_.computeBoundingRect();\n  }\n\n  resetActivationState_() {\n    this.previousActivationEvent_ = this.activationState_.activationEvent;\n    this.activationState_ = this.defaultActivationState_();\n    // Touch devices may fire additional events for the same interaction within a short time.\n    // Store the previous event until it's safe to assume that subsequent events are for new interactions.\n    setTimeout(() => this.previousActivationEvent_ = null, MDCRippleFoundation.numbers.TAP_DELAY_MS);\n  }\n\n  /**\n   * @param {?Event} e\n   * @private\n   */\n  deactivate_(e) {\n    const activationState = this.activationState_;\n    // This can happen in scenarios such as when you have a keyup event that blurs the element.\n    if (!activationState.isActivated) {\n      return;\n    }\n\n    const state = /** @type {!ActivationStateType} */ (Object.assign({}, activationState));\n\n    if (activationState.isProgrammatic) {\n      const evtObject = null;\n      requestAnimationFrame(() => this.animateDeactivation_(evtObject, state));\n      this.resetActivationState_();\n    } else {\n      this.deregisterDeactivationHandlers_();\n      requestAnimationFrame(() => {\n        this.activationState_.hasDeactivationUXRun = true;\n        this.animateDeactivation_(e, state);\n        this.resetActivationState_();\n      });\n    }\n  }\n\n  /**\n   * @param {?Event=} event Optional event containing position information.\n   */\n  deactivate(event = null) {\n    this.deactivate_(event);\n  }\n\n  /**\n   * @param {Event} e\n   * @param {!ActivationStateType} options\n   * @private\n   */\n  animateDeactivation_(e, {wasActivatedByPointer, wasElementMadeActive}) {\n    if (wasActivatedByPointer || wasElementMadeActive) {\n      this.runDeactivationUXLogicIfReady_();\n    }\n  }\n\n  layout() {\n    if (this.layoutFrame_) {\n      cancelAnimationFrame(this.layoutFrame_);\n    }\n    this.layoutFrame_ = requestAnimationFrame(() => {\n      this.layoutInternal_();\n      this.layoutFrame_ = 0;\n    });\n  }\n\n  /** @private */\n  layoutInternal_() {\n    this.frame_ = this.adapter_.computeBoundingRect();\n    const maxDim = Math.max(this.frame_.height, this.frame_.width);\n\n    // Surface diameter is treated differently for unbounded vs. bounded ripples.\n    // Unbounded ripple diameter is calculated smaller since the surface is expected to already be padded appropriately\n    // to extend the hitbox, and the ripple is expected to meet the edges of the padded hitbox (which is typically\n    // square). Bounded ripples, on the other hand, are fully expected to expand beyond the surface's longest diameter\n    // (calculated based on the diagonal plus a constant padding), and are clipped at the surface's border via\n    // `overflow: hidden`.\n    const getBoundedRadius = () => {\n      const hypotenuse = Math.sqrt(Math.pow(this.frame_.width, 2) + Math.pow(this.frame_.height, 2));\n      return hypotenuse + MDCRippleFoundation.numbers.PADDING;\n    };\n\n    this.maxRadius_ = this.adapter_.isUnbounded() ? maxDim : getBoundedRadius();\n\n    // Ripple is sized as a fraction of the largest dimension of the surface, then scales up using a CSS scale transform\n    this.initialSize_ = maxDim * MDCRippleFoundation.numbers.INITIAL_ORIGIN_SCALE;\n    this.fgScale_ = this.maxRadius_ / this.initialSize_;\n\n    this.updateLayoutCssVars_();\n  }\n\n  /** @private */\n  updateLayoutCssVars_() {\n    const {\n      VAR_FG_SIZE, VAR_LEFT, VAR_TOP, VAR_FG_SCALE,\n    } = MDCRippleFoundation.strings;\n\n    this.adapter_.updateCssVariable(VAR_FG_SIZE, `${this.initialSize_}px`);\n    this.adapter_.updateCssVariable(VAR_FG_SCALE, this.fgScale_);\n\n    if (this.adapter_.isUnbounded()) {\n      this.unboundedCoords_ = {\n        left: Math.round((this.frame_.width / 2) - (this.initialSize_ / 2)),\n        top: Math.round((this.frame_.height / 2) - (this.initialSize_ / 2)),\n      };\n\n      this.adapter_.updateCssVariable(VAR_LEFT, `${this.unboundedCoords_.left}px`);\n      this.adapter_.updateCssVariable(VAR_TOP, `${this.unboundedCoords_.top}px`);\n    }\n  }\n\n  /** @param {boolean} unbounded */\n  setUnbounded(unbounded) {\n    const {UNBOUNDED} = MDCRippleFoundation.cssClasses;\n    if (unbounded) {\n      this.adapter_.addClass(UNBOUNDED);\n    } else {\n      this.adapter_.removeClass(UNBOUNDED);\n    }\n  }\n\n  handleFocus() {\n    requestAnimationFrame(() =>\n      this.adapter_.addClass(MDCRippleFoundation.cssClasses.BG_FOCUSED));\n  }\n\n  handleBlur() {\n    requestAnimationFrame(() =>\n      this.adapter_.removeClass(MDCRippleFoundation.cssClasses.BG_FOCUSED));\n  }\n}\n\nexport default MDCRippleFoundation;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/ripple/foundation.js","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport MDCComponent from '@material/base/component';\nimport MDCRippleAdapter from './adapter';\nimport MDCRippleFoundation from './foundation';\nimport * as util from './util';\n\n/**\n * @extends MDCComponent<!MDCRippleFoundation>\n */\nclass MDCRipple extends MDCComponent {\n  /** @param {...?} args */\n  constructor(...args) {\n    super(...args);\n\n    /** @type {boolean} */\n    this.disabled = false;\n\n    /** @private {boolean} */\n    this.unbounded_;\n  }\n\n  /**\n   * @param {!Element} root\n   * @param {{isUnbounded: (boolean|undefined)}=} options\n   * @return {!MDCRipple}\n   */\n  static attachTo(root, {isUnbounded = undefined} = {}) {\n    const ripple = new MDCRipple(root);\n    // Only override unbounded behavior if option is explicitly specified\n    if (isUnbounded !== undefined) {\n      ripple.unbounded = /** @type {boolean} */ (isUnbounded);\n    }\n    return ripple;\n  }\n\n  /**\n   * @param {!RippleCapableSurface} instance\n   * @return {!MDCRippleAdapter}\n   */\n  static createAdapter(instance) {\n    const MATCHES = util.getMatchesProperty(HTMLElement.prototype);\n\n    return {\n      browserSupportsCssVars: () => util.supportsCssVariables(window),\n      isUnbounded: () => instance.unbounded,\n      isSurfaceActive: () => instance.root_[MATCHES](':active'),\n      isSurfaceDisabled: () => instance.disabled,\n      addClass: (className) => instance.root_.classList.add(className),\n      removeClass: (className) => instance.root_.classList.remove(className),\n      containsEventTarget: (target) => instance.root_.contains(target),\n      registerInteractionHandler: (evtType, handler) =>\n        instance.root_.addEventListener(evtType, handler, util.applyPassive()),\n      deregisterInteractionHandler: (evtType, handler) =>\n        instance.root_.removeEventListener(evtType, handler, util.applyPassive()),\n      registerDocumentInteractionHandler: (evtType, handler) =>\n        document.documentElement.addEventListener(evtType, handler, util.applyPassive()),\n      deregisterDocumentInteractionHandler: (evtType, handler) =>\n        document.documentElement.removeEventListener(evtType, handler, util.applyPassive()),\n      registerResizeHandler: (handler) => window.addEventListener('resize', handler),\n      deregisterResizeHandler: (handler) => window.removeEventListener('resize', handler),\n      updateCssVariable: (varName, value) => instance.root_.style.setProperty(varName, value),\n      computeBoundingRect: () => instance.root_.getBoundingClientRect(),\n      getWindowPageOffset: () => ({x: window.pageXOffset, y: window.pageYOffset}),\n    };\n  }\n\n  /** @return {boolean} */\n  get unbounded() {\n    return this.unbounded_;\n  }\n\n  /** @param {boolean} unbounded */\n  set unbounded(unbounded) {\n    this.unbounded_ = Boolean(unbounded);\n    this.setUnbounded_();\n  }\n\n  /**\n   * Closure Compiler throws an access control error when directly accessing a\n   * protected or private property inside a getter/setter, like unbounded above.\n   * By accessing the protected property inside a method, we solve that problem.\n   * That's why this function exists.\n   * @private\n   */\n  setUnbounded_() {\n    this.foundation_.setUnbounded(this.unbounded_);\n  }\n\n  activate() {\n    this.foundation_.activate();\n  }\n\n  deactivate() {\n    this.foundation_.deactivate();\n  }\n\n  layout() {\n    this.foundation_.layout();\n  }\n\n  /**\n   * @return {!MDCRippleFoundation}\n   * @override\n   */\n  getDefaultFoundation() {\n    return new MDCRippleFoundation(MDCRipple.createAdapter(this));\n  }\n\n  /** @override */\n  initialSyncWithDOM() {\n    this.unbounded = 'mdcRippleIsUnbounded' in this.root_.dataset;\n  }\n}\n\n/**\n * See Material Design spec for more details on when to use ripples.\n * https://material.io/guidelines/motion/choreography.html#choreography-creation\n * @record\n */\nclass RippleCapableSurface {}\n\n/** @protected {!Element} */\nRippleCapableSurface.prototype.root_;\n\n/**\n * Whether or not the ripple bleeds out of the bounds of the element.\n * @type {boolean|undefined}\n */\nRippleCapableSurface.prototype.unbounded;\n\n/**\n * Whether or not the ripple is attached to a disabled component.\n * @type {boolean|undefined}\n */\nRippleCapableSurface.prototype.disabled;\n\nexport {MDCRipple, MDCRippleFoundation, RippleCapableSurface, util};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@material/ripple/index.js","import 'whatwg-fetch';\nimport 'promise-polyfill/lib/polyfill';\nimport 'core-js/fn/array/find';\nimport 'core-js/fn/array/find-index';\nimport 'core-js/fn/object/assign';\nimport 'core-js/fn/string/starts-with';\nimport 'core-js/fn/string/repeat';\nimport 'core-js/fn/symbol';\nimport 'core-js/fn/symbol/iterator';\n\n/**\r\n * @license\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/dist/index.esm.js","'use strict';\n// 19.1.3.6 Object.prototype.toString()\nvar classof = require('./_classof');\nvar test = {};\ntest[require('./_wks')('toStringTag')] = 'z';\nif (test + '' != '[object z]') {\n  require('./_redefine')(Object.prototype, 'toString', function toString() {\n    return '[object ' + classof(this) + ']';\n  }, true);\n}\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.object.to-string.js","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = exports.Switch = void 0;\n\nvar _classCallCheck2 = _interopRequireDefault(require(\"@babel/runtime/helpers/classCallCheck\"));\n\nvar _createClass2 = _interopRequireDefault(require(\"@babel/runtime/helpers/createClass\"));\n\nvar _possibleConstructorReturn2 = _interopRequireDefault(require(\"@babel/runtime/helpers/possibleConstructorReturn\"));\n\nvar _getPrototypeOf2 = _interopRequireDefault(require(\"@babel/runtime/helpers/getPrototypeOf\"));\n\nvar _get2 = _interopRequireDefault(require(\"@babel/runtime/helpers/get\"));\n\nvar _inherits2 = _interopRequireDefault(require(\"@babel/runtime/helpers/inherits\"));\n\nvar _switch = require(\"@material/switch\");\n\nvar _preact = require(\"preact\");\n\nvar _MaterialComponent2 = _interopRequireDefault(require(\"../Base/MaterialComponent\"));\n\nvar __rest = void 0 && (void 0).__rest || function (s, e) {\n  var t = {};\n\n  for (var p in s) {\n    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];\n  }\n\n  if (s != null && typeof Object.getOwnPropertySymbols === \"function\") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n    if (e.indexOf(p[i]) < 0) t[p[i]] = s[p[i]];\n  }\n  return t;\n};\n\nvar Switch =\n/*#__PURE__*/\nfunction (_MaterialComponent) {\n  (0, _inherits2.default)(Switch, _MaterialComponent);\n\n  function Switch() {\n    var _this;\n\n    (0, _classCallCheck2.default)(this, Switch);\n    _this = (0, _possibleConstructorReturn2.default)(this, (0, _getPrototypeOf2.default)(Switch).apply(this, arguments));\n    _this.componentName = 'switch';\n    _this.mdcProps = ['disabled', 'checked'];\n    _this.mdcNotifyProps = ['disabled', 'checked'];\n    return _this;\n  }\n\n  (0, _createClass2.default)(Switch, [{\n    key: \"componentDidMount\",\n    value: function componentDidMount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(Switch.prototype), \"componentDidMount\", this).call(this);\n\n      if (this.control) {\n        this.MDComponent = new _switch.MDCSwitch(this.control);\n      }\n    }\n  }, {\n    key: \"componentWillUnmount\",\n    value: function componentWillUnmount() {\n      (0, _get2.default)((0, _getPrototypeOf2.default)(Switch.prototype), \"componentWillUnmount\", this).call(this);\n\n      if (this.MDComponent) {\n        this.MDComponent.destroy();\n      }\n    }\n  }, {\n    key: \"materialDom\",\n    value: function materialDom(allprops) {\n      var className = allprops.className,\n          props = __rest(allprops, [\"className\"]);\n\n      return (0, _preact.h)(\"div\", {\n        className: className,\n        ref: this.setControlRef\n      }, (0, _preact.h)(\"div\", {\n        class: \"mdc-switch__track\"\n      }), (0, _preact.h)(\"div\", {\n        class: \"mdc-switch__thumb-underlay\"\n      }, (0, _preact.h)(\"div\", {\n        class: \"mdc-switch__thumb\"\n      }, (0, _preact.h)(\"input\", Object.assign({\n        type: \"checkbox\",\n        id: \"basic-switch\",\n        class: \"mdc-switch__native-control\",\n        role: \"switch\"\n      }, props)))));\n    }\n  }]);\n  return Switch;\n}(_MaterialComponent2.default);\n\nexports.Switch = Switch;\nvar _default = Switch;\nexports.default = _default;\n//# sourceMappingURL=index.js.map\n\n\n// WEBPACK FOOTER //\n// ../node_modules/preact-material-components/Switch/index.js","/*!\n  Copyright (c) 2017 Jed Watson.\n  Licensed under the MIT License (MIT), see\n  http://jedwatson.github.io/classnames\n*/\n/* global define */\n\n(function () {\n\t'use strict';\n\n\tvar hasOwn = {}.hasOwnProperty;\n\n\tfunction classNames () {\n\t\tvar classes = [];\n\n\t\tfor (var i = 0; i < arguments.length; i++) {\n\t\t\tvar arg = arguments[i];\n\t\t\tif (!arg) continue;\n\n\t\t\tvar argType = typeof arg;\n\n\t\t\tif (argType === 'string' || argType === 'number') {\n\t\t\t\tclasses.push(this && this[arg] || arg);\n\t\t\t} else if (Array.isArray(arg)) {\n\t\t\t\tclasses.push(classNames.apply(this, arg));\n\t\t\t} else if (argType === 'object') {\n\t\t\t\tfor (var key in arg) {\n\t\t\t\t\tif (hasOwn.call(arg, key) && arg[key]) {\n\t\t\t\t\t\tclasses.push(this && this[key] || key);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn classes.join(' ');\n\t}\n\n\tif (typeof module !== 'undefined' && module.exports) {\n\t\tclassNames.default = classNames;\n\t\tmodule.exports = classNames;\n\t} else if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {\n\t\t// register as 'classnames', consistent with npm package name\n\t\tdefine('classnames', [], function () {\n\t\t\treturn classNames;\n\t\t});\n\t} else {\n\t\twindow.classNames = classNames;\n\t}\n}());\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/classNames/bind.js","'use strict';\n// ECMAScript 6 symbols shim\nvar global = require('./_global');\nvar has = require('./_has');\nvar DESCRIPTORS = require('./_descriptors');\nvar $export = require('./_export');\nvar redefine = require('./_redefine');\nvar META = require('./_meta').KEY;\nvar $fails = require('./_fails');\nvar shared = require('./_shared');\nvar setToStringTag = require('./_set-to-string-tag');\nvar uid = require('./_uid');\nvar wks = require('./_wks');\nvar wksExt = require('./_wks-ext');\nvar wksDefine = require('./_wks-define');\nvar enumKeys = require('./_enum-keys');\nvar isArray = require('./_is-array');\nvar anObject = require('./_an-object');\nvar isObject = require('./_is-object');\nvar toIObject = require('./_to-iobject');\nvar toPrimitive = require('./_to-primitive');\nvar createDesc = require('./_property-desc');\nvar _create = require('./_object-create');\nvar gOPNExt = require('./_object-gopn-ext');\nvar $GOPD = require('./_object-gopd');\nvar $DP = require('./_object-dp');\nvar $keys = require('./_object-keys');\nvar gOPD = $GOPD.f;\nvar dP = $DP.f;\nvar gOPN = gOPNExt.f;\nvar $Symbol = global.Symbol;\nvar $JSON = global.JSON;\nvar _stringify = $JSON && $JSON.stringify;\nvar PROTOTYPE = 'prototype';\nvar HIDDEN = wks('_hidden');\nvar TO_PRIMITIVE = wks('toPrimitive');\nvar isEnum = {}.propertyIsEnumerable;\nvar SymbolRegistry = shared('symbol-registry');\nvar AllSymbols = shared('symbols');\nvar OPSymbols = shared('op-symbols');\nvar ObjectProto = Object[PROTOTYPE];\nvar USE_NATIVE = typeof $Symbol == 'function';\nvar QObject = global.QObject;\n// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173\nvar setter = !QObject || !QObject[PROTOTYPE] || !QObject[PROTOTYPE].findChild;\n\n// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687\nvar setSymbolDesc = DESCRIPTORS && $fails(function () {\n  return _create(dP({}, 'a', {\n    get: function () { return dP(this, 'a', { value: 7 }).a; }\n  })).a != 7;\n}) ? function (it, key, D) {\n  var protoDesc = gOPD(ObjectProto, key);\n  if (protoDesc) delete ObjectProto[key];\n  dP(it, key, D);\n  if (protoDesc && it !== ObjectProto) dP(ObjectProto, key, protoDesc);\n} : dP;\n\nvar wrap = function (tag) {\n  var sym = AllSymbols[tag] = _create($Symbol[PROTOTYPE]);\n  sym._k = tag;\n  return sym;\n};\n\nvar isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) {\n  return typeof it == 'symbol';\n} : function (it) {\n  return it instanceof $Symbol;\n};\n\nvar $defineProperty = function defineProperty(it, key, D) {\n  if (it === ObjectProto) $defineProperty(OPSymbols, key, D);\n  anObject(it);\n  key = toPrimitive(key, true);\n  anObject(D);\n  if (has(AllSymbols, key)) {\n    if (!D.enumerable) {\n      if (!has(it, HIDDEN)) dP(it, HIDDEN, createDesc(1, {}));\n      it[HIDDEN][key] = true;\n    } else {\n      if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false;\n      D = _create(D, { enumerable: createDesc(0, false) });\n    } return setSymbolDesc(it, key, D);\n  } return dP(it, key, D);\n};\nvar $defineProperties = function defineProperties(it, P) {\n  anObject(it);\n  var keys = enumKeys(P = toIObject(P));\n  var i = 0;\n  var l = keys.length;\n  var key;\n  while (l > i) $defineProperty(it, key = keys[i++], P[key]);\n  return it;\n};\nvar $create = function create(it, P) {\n  return P === undefined ? _create(it) : $defineProperties(_create(it), P);\n};\nvar $propertyIsEnumerable = function propertyIsEnumerable(key) {\n  var E = isEnum.call(this, key = toPrimitive(key, true));\n  if (this === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return false;\n  return E || !has(this, key) || !has(AllSymbols, key) || has(this, HIDDEN) && this[HIDDEN][key] ? E : true;\n};\nvar $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) {\n  it = toIObject(it);\n  key = toPrimitive(key, true);\n  if (it === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return;\n  var D = gOPD(it, key);\n  if (D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true;\n  return D;\n};\nvar $getOwnPropertyNames = function getOwnPropertyNames(it) {\n  var names = gOPN(toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (!has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key);\n  } return result;\n};\nvar $getOwnPropertySymbols = function getOwnPropertySymbols(it) {\n  var IS_OP = it === ObjectProto;\n  var names = gOPN(IS_OP ? OPSymbols : toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectProto, key) : true)) result.push(AllSymbols[key]);\n  } return result;\n};\n\n// 19.4.1.1 Symbol([description])\nif (!USE_NATIVE) {\n  $Symbol = function Symbol() {\n    if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!');\n    var tag = uid(arguments.length > 0 ? arguments[0] : undefined);\n    var $set = function (value) {\n      if (this === ObjectProto) $set.call(OPSymbols, value);\n      if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;\n      setSymbolDesc(this, tag, createDesc(1, value));\n    };\n    if (DESCRIPTORS && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set });\n    return wrap(tag);\n  };\n  redefine($Symbol[PROTOTYPE], 'toString', function toString() {\n    return this._k;\n  });\n\n  $GOPD.f = $getOwnPropertyDescriptor;\n  $DP.f = $defineProperty;\n  require('./_object-gopn').f = gOPNExt.f = $getOwnPropertyNames;\n  require('./_object-pie').f = $propertyIsEnumerable;\n  require('./_object-gops').f = $getOwnPropertySymbols;\n\n  if (DESCRIPTORS && !require('./_library')) {\n    redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true);\n  }\n\n  wksExt.f = function (name) {\n    return wrap(wks(name));\n  };\n}\n\n$export($export.G + $export.W + $export.F * !USE_NATIVE, { Symbol: $Symbol });\n\nfor (var es6Symbols = (\n  // 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14\n  'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables'\n).split(','), j = 0; es6Symbols.length > j;)wks(es6Symbols[j++]);\n\nfor (var wellKnownSymbols = $keys(wks.store), k = 0; wellKnownSymbols.length > k;) wksDefine(wellKnownSymbols[k++]);\n\n$export($export.S + $export.F * !USE_NATIVE, 'Symbol', {\n  // 19.4.2.1 Symbol.for(key)\n  'for': function (key) {\n    return has(SymbolRegistry, key += '')\n      ? SymbolRegistry[key]\n      : SymbolRegistry[key] = $Symbol(key);\n  },\n  // 19.4.2.5 Symbol.keyFor(sym)\n  keyFor: function keyFor(sym) {\n    if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!');\n    for (var key in SymbolRegistry) if (SymbolRegistry[key] === sym) return key;\n  },\n  useSetter: function () { setter = true; },\n  useSimple: function () { setter = false; }\n});\n\n$export($export.S + $export.F * !USE_NATIVE, 'Object', {\n  // 19.1.2.2 Object.create(O [, Properties])\n  create: $create,\n  // 19.1.2.4 Object.defineProperty(O, P, Attributes)\n  defineProperty: $defineProperty,\n  // 19.1.2.3 Object.defineProperties(O, Properties)\n  defineProperties: $defineProperties,\n  // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)\n  getOwnPropertyDescriptor: $getOwnPropertyDescriptor,\n  // 19.1.2.7 Object.getOwnPropertyNames(O)\n  getOwnPropertyNames: $getOwnPropertyNames,\n  // 19.1.2.8 Object.getOwnPropertySymbols(O)\n  getOwnPropertySymbols: $getOwnPropertySymbols\n});\n\n// 24.3.2 JSON.stringify(value [, replacer [, space]])\n$JSON && $export($export.S + $export.F * (!USE_NATIVE || $fails(function () {\n  var S = $Symbol();\n  // MS Edge converts symbol values to JSON as {}\n  // WebKit converts symbol values to JSON as null\n  // V8 throws on boxed symbols\n  return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}';\n})), 'JSON', {\n  stringify: function stringify(it) {\n    var args = [it];\n    var i = 1;\n    var replacer, $replacer;\n    while (arguments.length > i) args.push(arguments[i++]);\n    $replacer = replacer = args[1];\n    if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined\n    if (!isArray(replacer)) replacer = function (key, value) {\n      if (typeof $replacer == 'function') value = $replacer.call(this, key, value);\n      if (!isSymbol(value)) return value;\n    };\n    args[1] = replacer;\n    return _stringify.apply($JSON, args);\n  }\n});\n\n// 19.4.3.4 Symbol.prototype[@@toPrimitive](hint)\n$Symbol[PROTOTYPE][TO_PRIMITIVE] || require('./_hide')($Symbol[PROTOTYPE], TO_PRIMITIVE, $Symbol[PROTOTYPE].valueOf);\n// 19.4.3.5 Symbol.prototype[@@toStringTag]\nsetToStringTag($Symbol, 'Symbol');\n// 20.2.1.9 Math[@@toStringTag]\nsetToStringTag(Math, 'Math', true);\n// 24.3.3 JSON[@@toStringTag]\nsetToStringTag(global.JSON, 'JSON', true);\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/es6.symbol.js","module.exports = function (exec) {\n  try {\n    return !!exec();\n  } catch (e) {\n    return true;\n  }\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_fails.js","// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window\nvar toIObject = require('./_to-iobject');\nvar gOPN = require('./_object-gopn').f;\nvar toString = {}.toString;\n\nvar windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames\n  ? Object.getOwnPropertyNames(window) : [];\n\nvar getWindowNames = function (it) {\n  try {\n    return gOPN(it);\n  } catch (e) {\n    return windowNames.slice();\n  }\n};\n\nmodule.exports.f = function getOwnPropertyNames(it) {\n  return windowNames && toString.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it));\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_object-gopn-ext.js","var shared = require('./_shared')('keys');\nvar uid = require('./_uid');\nmodule.exports = function (key) {\n  return shared[key] || (shared[key] = uid(key));\n};\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/_shared-key.js","var tabbable = require('tabbable');\n\nvar listeningFocusTrap = null;\n\nfunction focusTrap(element, userOptions) {\n  var tabbableNodes = [];\n  var firstTabbableNode = null;\n  var lastTabbableNode = null;\n  var nodeFocusedBeforeActivation = null;\n  var active = false;\n  var paused = false;\n  var tabEvent = null;\n\n  var container = (typeof element === 'string')\n    ? document.querySelector(element)\n    : element;\n\n  var config = userOptions || {};\n  config.returnFocusOnDeactivate = (userOptions && userOptions.returnFocusOnDeactivate !== undefined)\n    ? userOptions.returnFocusOnDeactivate\n    : true;\n  config.escapeDeactivates = (userOptions && userOptions.escapeDeactivates !== undefined)\n    ? userOptions.escapeDeactivates\n    : true;\n\n  var trap = {\n    activate: activate,\n    deactivate: deactivate,\n    pause: pause,\n    unpause: unpause,\n  };\n\n  return trap;\n\n  function activate(activateOptions) {\n    if (active) return;\n\n    var defaultedActivateOptions = {\n      onActivate: (activateOptions && activateOptions.onActivate !== undefined)\n        ? activateOptions.onActivate\n        : config.onActivate,\n    };\n\n    active = true;\n    paused = false;\n    nodeFocusedBeforeActivation = document.activeElement;\n\n    if (defaultedActivateOptions.onActivate) {\n      defaultedActivateOptions.onActivate();\n    }\n\n    addListeners();\n    return trap;\n  }\n\n  function deactivate(deactivateOptions) {\n    if (!active) return;\n\n    var defaultedDeactivateOptions = {\n      returnFocus: (deactivateOptions && deactivateOptions.returnFocus !== undefined)\n        ? deactivateOptions.returnFocus\n        : config.returnFocusOnDeactivate,\n      onDeactivate: (deactivateOptions && deactivateOptions.onDeactivate !== undefined)\n        ? deactivateOptions.onDeactivate\n        : config.onDeactivate,\n    };\n\n    removeListeners();\n\n    if (defaultedDeactivateOptions.onDeactivate) {\n      defaultedDeactivateOptions.onDeactivate();\n    }\n\n    if (defaultedDeactivateOptions.returnFocus) {\n      setTimeout(function () {\n        tryFocus(nodeFocusedBeforeActivation);\n      }, 0);\n    }\n\n    active = false;\n    paused = false;\n    return this;\n  }\n\n  function pause() {\n    if (paused || !active) return;\n    paused = true;\n    removeListeners();\n  }\n\n  function unpause() {\n    if (!paused || !active) return;\n    paused = false;\n    addListeners();\n  }\n\n  function addListeners() {\n    if (!active) return;\n\n    // There can be only one listening focus trap at a time\n    if (listeningFocusTrap) {\n      listeningFocusTrap.pause();\n    }\n    listeningFocusTrap = trap;\n\n    updateTabbableNodes();\n    // Ensure that the focused element doesn't capture the event that caused the focus trap activation\n    setTimeout(function () {\n      tryFocus(firstFocusNode());\n    }, 0);\n    document.addEventListener('focus', checkFocus, true);\n    document.addEventListener('click', checkClick, true);\n    document.addEventListener('mousedown', checkPointerDown, true);\n    document.addEventListener('touchstart', checkPointerDown, true);\n    document.addEventListener('keydown', checkKey, true);\n\n    return trap;\n  }\n\n  function removeListeners() {\n    if (!active || listeningFocusTrap !== trap) return;\n\n    document.removeEventListener('focus', checkFocus, true);\n    document.removeEventListener('click', checkClick, true);\n    document.removeEventListener('mousedown', checkPointerDown, true);\n    document.removeEventListener('touchstart', checkPointerDown, true);\n    document.removeEventListener('keydown', checkKey, true);\n\n    listeningFocusTrap = null;\n\n    return trap;\n  }\n\n  function getNodeForOption(optionName) {\n    var optionValue = config[optionName];\n    var node = optionValue;\n    if (!optionValue) {\n      return null;\n    }\n    if (typeof optionValue === 'string') {\n      node = document.querySelector(optionValue);\n      if (!node) {\n        throw new Error('`' + optionName + '` refers to no known node');\n      }\n    }\n    if (typeof optionValue === 'function') {\n      node = optionValue();\n      if (!node) {\n        throw new Error('`' + optionName + '` did not return a node');\n      }\n    }\n    return node;\n  }\n\n  function firstFocusNode() {\n    var node;\n    if (getNodeForOption('initialFocus') !== null) {\n      node = getNodeForOption('initialFocus');\n    } else if (container.contains(document.activeElement)) {\n      node = document.activeElement;\n    } else {\n      node = tabbableNodes[0] || getNodeForOption('fallbackFocus');\n    }\n\n    if (!node) {\n      throw new Error('You can\\'t have a focus-trap without at least one focusable element');\n    }\n\n    return node;\n  }\n\n  // This needs to be done on mousedown and touchstart instead of click\n  // so that it precedes the focus event\n  function checkPointerDown(e) {\n    if (config.clickOutsideDeactivates && !container.contains(e.target)) {\n      deactivate({ returnFocus: false });\n    }\n  }\n\n  function checkClick(e) {\n    if (config.clickOutsideDeactivates) return;\n    if (container.contains(e.target)) return;\n    e.preventDefault();\n    e.stopImmediatePropagation();\n  }\n\n  function checkFocus(e) {\n    if (container.contains(e.target)) return;\n    e.preventDefault();\n    e.stopImmediatePropagation();\n    // Checking for a blur method here resolves a Firefox issue (#15)\n    if (typeof e.target.blur === 'function') e.target.blur();\n\n    if (tabEvent) {\n      readjustFocus(tabEvent);\n    }\n  }\n\n  function checkKey(e) {\n    if (e.key === 'Tab' || e.keyCode === 9) {\n      handleTab(e);\n    }\n\n    if (config.escapeDeactivates !== false && isEscapeEvent(e)) {\n      deactivate();\n    }\n  }\n\n  function handleTab(e) {\n    updateTabbableNodes();\n\n    if (e.target.hasAttribute('tabindex') && Number(e.target.getAttribute('tabindex')) < 0) {\n      return tabEvent = e;\n    }\n\n    e.preventDefault();\n    var currentFocusIndex = tabbableNodes.indexOf(e.target);\n\n    if (e.shiftKey) {\n      if (e.target === firstTabbableNode || tabbableNodes.indexOf(e.target) === -1) {\n        return tryFocus(lastTabbableNode);\n      }\n      return tryFocus(tabbableNodes[currentFocusIndex - 1]);\n    }\n\n    if (e.target === lastTabbableNode) return tryFocus(firstTabbableNode);\n\n    tryFocus(tabbableNodes[currentFocusIndex + 1]);\n  }\n\n  function updateTabbableNodes() {\n    tabbableNodes = tabbable(container);\n    firstTabbableNode = tabbableNodes[0];\n    lastTabbableNode = tabbableNodes[tabbableNodes.length - 1];\n  }\n\n  function readjustFocus(e) {\n    if (e.shiftKey) return tryFocus(lastTabbableNode);\n\n    tryFocus(firstTabbableNode);\n  }\n}\n\nfunction isEscapeEvent(e) {\n  return e.key === 'Escape' || e.key === 'Esc' || e.keyCode === 27;\n}\n\nfunction tryFocus(node) {\n  if (!node || !node.focus) return;\n  if (node === document.activeElement)  return;\n\n  node.focus();\n  if (node.tagName.toLowerCase() === 'input') {\n    node.select();\n  }\n}\n\nmodule.exports = focusTrap;\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/focus-trap/index.js","var $iterators = require('./es6.array.iterator');\nvar getKeys = require('./_object-keys');\nvar redefine = require('./_redefine');\nvar global = require('./_global');\nvar hide = require('./_hide');\nvar Iterators = require('./_iterators');\nvar wks = require('./_wks');\nvar ITERATOR = wks('iterator');\nvar TO_STRING_TAG = wks('toStringTag');\nvar ArrayValues = Iterators.Array;\n\nvar DOMIterables = {\n  CSSRuleList: true, // TODO: Not spec compliant, should be false.\n  CSSStyleDeclaration: false,\n  CSSValueList: false,\n  ClientRectList: false,\n  DOMRectList: false,\n  DOMStringList: false,\n  DOMTokenList: true,\n  DataTransferItemList: false,\n  FileList: false,\n  HTMLAllCollection: false,\n  HTMLCollection: false,\n  HTMLFormElement: false,\n  HTMLSelectElement: false,\n  MediaList: true, // TODO: Not spec compliant, should be false.\n  MimeTypeArray: false,\n  NamedNodeMap: false,\n  NodeList: true,\n  PaintRequestList: false,\n  Plugin: false,\n  PluginArray: false,\n  SVGLengthList: false,\n  SVGNumberList: false,\n  SVGPathSegList: false,\n  SVGPointList: false,\n  SVGStringList: false,\n  SVGTransformList: false,\n  SourceBufferList: false,\n  StyleSheetList: true, // TODO: Not spec compliant, should be false.\n  TextTrackCueList: false,\n  TextTrackList: false,\n  TouchList: false\n};\n\nfor (var collections = getKeys(DOMIterables), i = 0; i < collections.length; i++) {\n  var NAME = collections[i];\n  var explicit = DOMIterables[NAME];\n  var Collection = global[NAME];\n  var proto = Collection && Collection.prototype;\n  var key;\n  if (proto) {\n    if (!proto[ITERATOR]) hide(proto, ITERATOR, ArrayValues);\n    if (!proto[TO_STRING_TAG]) hide(proto, TO_STRING_TAG, NAME);\n    Iterators[NAME] = ArrayValues;\n    if (explicit) for (key in $iterators) if (!proto[key]) redefine(proto, key, $iterators[key], true);\n  }\n}\n\n\n\n// WEBPACK FOOTER //\n// ../node_modules/@firebase/polyfill/node_modules/core-js/modules/web.dom.iterable.js"],"sourceRoot":""}