{"version":3,"file":"firebase.js","sources":["../../node_modules/whatwg-fetch/fetch.js","../polyfill/dist/index.esm.js","../../node_modules/tslib/tslib.es6.js","../util/dist/index.esm.js","../app/dist/index.esm.js","../logger/dist/index.esm.js","app/index.js","../auth/dist/auth.js","../database/dist/index.esm.js","../messaging/dist/index.esm.js","../storage/dist/index.esm.js","index.js"],"sourcesContent":["(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","import 'whatwg-fetch';\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\nfunction createCommonjsModule(fn, module) {\n\treturn module = { exports: {} }, fn(module, module.exports), module.exports;\n}\n\nvar _global = createCommonjsModule(function (module) {\n// 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\nvar _core = createCommonjsModule(function (module) {\nvar core = module.exports = { version: '2.5.5' };\nif (typeof __e == 'number') __e = core; // eslint-disable-line no-undef\n});\nvar _core_1 = _core.version;\n\nvar _isObject = function (it) {\n  return typeof it === 'object' ? it !== null : typeof it === 'function';\n};\n\nvar _anObject = function (it) {\n  if (!_isObject(it)) throw TypeError(it + ' is not an object!');\n  return it;\n};\n\nvar _fails = function (exec) {\n  try {\n    return !!exec();\n  } catch (e) {\n    return true;\n  }\n};\n\n// Thank's IE8 for his funny defineProperty\nvar _descriptors = !_fails(function () {\n  return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;\n});\n\nvar document = _global.document;\n// typeof document.createElement is 'object' in old IE\nvar is = _isObject(document) && _isObject(document.createElement);\nvar _domCreate = function (it) {\n  return is ? document.createElement(it) : {};\n};\n\nvar _ie8DomDefine = !_descriptors && !_fails(function () {\n  return Object.defineProperty(_domCreate('div'), 'a', { get: function () { return 7; } }).a != 7;\n});\n\n// 7.1.1 ToPrimitive(input [, PreferredType])\n\n// instead of the ES6 spec version, we didn't implement @@toPrimitive case\n// and the second argument - flag - preferred type is a string\nvar _toPrimitive = 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\nvar dP = Object.defineProperty;\n\nvar f = _descriptors ? Object.defineProperty : function defineProperty(O, P, Attributes) {\n  _anObject(O);\n  P = _toPrimitive(P, true);\n  _anObject(Attributes);\n  if (_ie8DomDefine) 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\nvar _objectDp = {\n\tf: f\n};\n\nvar _propertyDesc = function (bitmap, value) {\n  return {\n    enumerable: !(bitmap & 1),\n    configurable: !(bitmap & 2),\n    writable: !(bitmap & 4),\n    value: value\n  };\n};\n\nvar _hide = _descriptors ? function (object, key, value) {\n  return _objectDp.f(object, key, _propertyDesc(1, value));\n} : function (object, key, value) {\n  object[key] = value;\n  return object;\n};\n\nvar hasOwnProperty = {}.hasOwnProperty;\nvar _has = function (it, key) {\n  return hasOwnProperty.call(it, key);\n};\n\nvar id = 0;\nvar px = Math.random();\nvar _uid = function (key) {\n  return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));\n};\n\nvar _redefine = createCommonjsModule(function (module) {\nvar SRC = _uid('src');\nvar TO_STRING = 'toString';\nvar $toString = Function[TO_STRING];\nvar TPL = ('' + $toString).split(TO_STRING);\n\n_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\nvar _aFunction = function (it) {\n  if (typeof it != 'function') throw TypeError(it + ' is not a function!');\n  return it;\n};\n\n// optional / simple context binding\n\nvar _ctx = function (fn, that, length) {\n  _aFunction(fn);\n  if (that === undefined) return fn;\n  switch (length) {\n    case 1: return function (a) {\n      return fn.call(that, a);\n    };\n    case 2: return function (a, b) {\n      return fn.call(that, a, b);\n    };\n    case 3: return function (a, b, c) {\n      return fn.call(that, a, b, c);\n    };\n  }\n  return function (/* ...args */) {\n    return fn.apply(that, arguments);\n  };\n};\n\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 & $export.U);\n    // export\n    if (exports[key] != out) _hide(exports, key, exp);\n    if (IS_PROTO && expProto[key] != out) expProto[key] = out;\n  }\n};\n_global.core = _core;\n// type bitmap\n$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`\nvar _export = $export;\n\nvar toString = {}.toString;\n\nvar _cof = function (it) {\n  return toString.call(it).slice(8, -1);\n};\n\n// fallback for non-array-like ES3 and non-enumerable old V8 strings\n\n// eslint-disable-next-line no-prototype-builtins\nvar _iobject = Object('z').propertyIsEnumerable(0) ? Object : function (it) {\n  return _cof(it) == 'String' ? it.split('') : Object(it);\n};\n\n// 7.2.1 RequireObjectCoercible(argument)\nvar _defined = function (it) {\n  if (it == undefined) throw TypeError(\"Can't call method on  \" + it);\n  return it;\n};\n\n// 7.1.13 ToObject(argument)\n\nvar _toObject = function (it) {\n  return Object(_defined(it));\n};\n\n// 7.1.4 ToInteger\nvar ceil = Math.ceil;\nvar floor = Math.floor;\nvar _toInteger = function (it) {\n  return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);\n};\n\n// 7.1.15 ToLength\n\nvar min = Math.min;\nvar _toLength = function (it) {\n  return it > 0 ? min(_toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991\n};\n\n// 7.2.2 IsArray(argument)\n\nvar _isArray = Array.isArray || function isArray(arg) {\n  return _cof(arg) == 'Array';\n};\n\nvar SHARED = '__core-js_shared__';\nvar store = _global[SHARED] || (_global[SHARED] = {});\nvar _shared = function (key) {\n  return store[key] || (store[key] = {});\n};\n\nvar _wks = createCommonjsModule(function (module) {\nvar store = _shared('wks');\n\nvar Symbol = _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\nvar SPECIES = _wks('species');\n\nvar _arraySpeciesConstructor = 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// 9.4.2.3 ArraySpeciesCreate(originalArray, length)\n\n\nvar _arraySpeciesCreate = function (original, length) {\n  return new (_arraySpeciesConstructor(original))(length);\n};\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\n\n\n\n\n\nvar _arrayMethods = 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 = $create || _arraySpeciesCreate;\n  return function ($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// 22.1.3.31 Array.prototype[@@unscopables]\nvar UNSCOPABLES = _wks('unscopables');\nvar ArrayProto = Array.prototype;\nif (ArrayProto[UNSCOPABLES] == undefined) _hide(ArrayProto, UNSCOPABLES, {});\nvar _addToUnscopables = function (key) {\n  ArrayProto[UNSCOPABLES][key] = true;\n};\n\n// 22.1.3.8 Array.prototype.find(predicate, thisArg = undefined)\n\nvar $find = _arrayMethods(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});\n_addToUnscopables(KEY);\n\nvar find = _core.Array.find;\n\n// 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined)\n\nvar $find$1 = _arrayMethods(6);\nvar KEY$1 = 'findIndex';\nvar forced$1 = true;\n// Shouldn't skip holes\nif (KEY$1 in []) Array(1)[KEY$1](function () { forced$1 = false; });\n_export(_export.P + _export.F * forced$1, 'Array', {\n  findIndex: function findIndex(callbackfn /* , that = undefined */) {\n    return $find$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n  }\n});\n_addToUnscopables(KEY$1);\n\nvar findIndex = _core.Array.findIndex;\n\n// 7.2.8 IsRegExp(argument)\n\n\nvar MATCH = _wks('match');\nvar _isRegexp = function (it) {\n  var isRegExp;\n  return _isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : _cof(it) == 'RegExp');\n};\n\n// helper for String#{startsWith, endsWith, includes}\n\n\n\nvar _stringContext = function (that, searchString, NAME) {\n  if (_isRegexp(searchString)) throw TypeError('String#' + NAME + \" doesn't accept regex!\");\n  return String(_defined(that));\n};\n\nvar MATCH$1 = _wks('match');\nvar _failsIsRegexp = function (KEY) {\n  var re = /./;\n  try {\n    '/./'[KEY](re);\n  } catch (e) {\n    try {\n      re[MATCH$1] = false;\n      return !'/./'[KEY](re);\n    } catch (f) { /* empty */ }\n  } return true;\n};\n\nvar STARTS_WITH = 'startsWith';\nvar $startsWith = ''[STARTS_WITH];\n\n_export(_export.P + _export.F * _failsIsRegexp(STARTS_WITH), 'String', {\n  startsWith: function startsWith(searchString /* , position = 0 */) {\n    var that = _stringContext(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\nvar startsWith = _core.String.startsWith;\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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\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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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","import { __extends } from 'tslib';\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            var err_1 = Error.apply(this, arguments);\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_1.stack;\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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 and non-empty\r\n * signature.\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 (!!decoded.signature &&\r\n        !!claims &&\r\n        typeof claims === 'object' &&\r\n        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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\nexport { assert, assertionError, base64, base64Decode, base64Encode, CONSTANTS, deepCopy, deepExtend, patchProperty, Deferred, getUA, isMobileCordova, isNodeSdk, isReactNative, ErrorFactory, FirebaseError, patchCapture, jsonEval, stringify, decode, isAdmin, issuedAtTime, isValidFormat, isValidTimestamp, clone, contains, every, extend, findKey, findValue, forEach, getAnyKey, getCount, getValues, isEmpty, isNonNullObject, map, safeGet, querystring, querystringDecode, Sha1, async, createSubscribe, errorPrefix, validateArgCount, validateCallback, validateContextObject, validateNamespace, stringLength, stringToByteArray$1 as stringToByteArray };\n","import { createSubscribe, deepCopy, deepExtend, ErrorFactory, patchProperty } from '@firebase/util';\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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_ = 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        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: '4.13.0',\r\n        INTERNAL: {\r\n            registerService: registerService,\r\n            createFirebaseNamespace: createFirebaseNamespace,\r\n            extendNamespace: extendNamespace,\r\n            createSubscribe: createSubscribe,\r\n            ErrorFactory: ErrorFactory,\r\n            removeApp: removeApp,\r\n            factories: factories,\r\n            useAsService: useAsService,\r\n            Promise: Promise,\r\n            deepExtend: 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    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    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            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        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 ErrorFactory('app', 'Firebase', errors);\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 firebase = createFirebaseNamespace();\n\nexport default firebase;\nexport { firebase };\n","/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 = 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firebase&&firebase.INTERNAL&&firebase.INTERNAL.registerService){var a={Auth:Gl,Error:M};Z(a,\"EmailAuthProvider\",O,[]);Z(a,\"FacebookAuthProvider\",Nf,[]);Z(a,\"GithubAuthProvider\",Pf,[]);Z(a,\"GoogleAuthProvider\",Rf,[]);Z(a,\"TwitterAuthProvider\",Tf,[]);Z(a,\"OAuthProvider\",N,[V(\"providerId\")]);Z(a,\"PhoneAuthProvider\",fg,[qm()]);Z(a,\"RecaptchaVerifier\",jm,[X(V(),pm(),\"recaptchaContainer\"),W(\"recaptchaParameters\",!0),rm()]);firebase.INTERNAL.registerService(\"auth\",function(a,\nc){a=new Gl(a);c({INTERNAL:{getUid:r(a.getUid,a),getToken:r(a.$b,a),addAuthTokenListener:r(a.Qb,a),removeAuthTokenListener:r(a.zc,a)}});return a},a,function(a,c){if(\"create\"===a)try{c.auth()}catch(d){}});firebase.INTERNAL.extendNamespace({User:Lk})}else throw Error(\"Cannot find the firebase namespace; be sure to include firebase-app.js before this library.\");})();\n}).call(typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : typeof window !== 'undefined' ? window : {});\n","import { jsonEval, stringify, contains, assert, forEach, base64, Sha1, stringToByteArray, isNodeSdk, stringLength, safeGet, errorPrefix, validateArgCount, validateCallback, Deferred, assertionError, clone, map, getCount, getAnyKey, every, validateContextObject, isEmpty, getValues, findValue, findKey, deepCopy, isMobileCordova, base64Encode, CONSTANTS, isAdmin, isValidFormat, isReactNative, querystring } from '@firebase/util';\nimport { Logger, LogLevel } from '@firebase/logger';\nimport { __awaiter, __generator, __extends } from 'tslib';\nimport firebase from '@firebase/app';\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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), 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 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 (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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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('@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 = stringToByteArray(str);\r\n    var sha1 = new Sha1();\r\n    sha1.update(utf8Bytes);\r\n    var sha1Bytes = sha1.digest();\r\n    return 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 += 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    assert(!persistent || (logger_ === true || logger_ === false), \"Can't turn on custom loggers persistently.\");\r\n    if (logger_ === true) {\r\n        logClient.logLevel = 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 (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: ' + 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 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 += 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        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    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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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_ += 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_ += 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_ -= 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        assert(typeof type === 'string', 'typeof type must == string');\r\n        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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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.startsWith('?')) {\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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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' && 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(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$$1, data, path_) {\r\n    var path = path_ instanceof Path ? new ValidationPath(path_, errorPrefix$$1) : path_;\r\n    if (data === undefined) {\r\n        throw new Error(errorPrefix$$1 + 'contains undefined ' + path.toErrorString());\r\n    }\r\n    if (typeof data === 'function') {\r\n        throw new Error(errorPrefix$$1 +\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$$1 + 'contains ' + data.toString() + ' ' + path.toErrorString());\r\n    }\r\n    // Check max leaf size, but try to avoid the utf8 conversion if we can.\r\n    if (typeof data === 'string' &&\r\n        data.length > MAX_LEAF_SIZE_ / 3 &&\r\n        stringLength(data) > MAX_LEAF_SIZE_) {\r\n        throw new Error(errorPrefix$$1 +\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        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$$1 +\r\n                        ' contains an invalid key (' +\r\n                        key +\r\n                        ') ' +\r\n                        path.toErrorString() +\r\n                        '.  Keys must be non-empty strings ' +\r\n                        'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');\r\n                }\r\n            }\r\n            path.push(key);\r\n            validateFirebaseData(errorPrefix$$1, value, path);\r\n            path.pop();\r\n        });\r\n        if (hasDotValue_1 && hasActualChild_1) {\r\n            throw new Error(errorPrefix$$1 +\r\n                ' contains \".value\" child ' +\r\n                path.toErrorString() +\r\n                ' in addition to actual children.');\r\n        }\r\n    }\r\n};\r\n/**\r\n * Pre-validate paths passed in the firebase function.\r\n *\r\n * @param {string} errorPrefix\r\n * @param {Array<!Path>} mergePaths\r\n */\r\nvar validateFirebaseMergePaths = function (errorPrefix$$1, 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                // .priority is OK\r\n            }\r\n            else if (!isValidKey(keys[j])) {\r\n                throw new Error(errorPrefix$$1 +\r\n                    'contains an invalid key (' +\r\n                    keys[j] +\r\n                    ') in path ' +\r\n                    curPath.toString() +\r\n                    '. Keys must be non-empty strings ' +\r\n                    'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');\r\n            }\r\n        }\r\n    }\r\n    // Check that update keys are not descendants of each other.\r\n    // We rely on the property that sorting guarantees that ancestors come\r\n    // right before descendants.\r\n    mergePaths.sort(Path.comparePaths);\r\n    var prevPath = null;\r\n    for (i = 0; i < mergePaths.length; i++) {\r\n        curPath = mergePaths[i];\r\n        if (prevPath !== null && prevPath.contains(curPath)) {\r\n            throw new Error(errorPrefix$$1 +\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$$1 = errorPrefix(fnName, argumentNumber, optional);\r\n    if (!(data && typeof data === 'object') || Array.isArray(data)) {\r\n        throw new Error(errorPrefix$$1 + ' must be an object containing the children to replace.');\r\n    }\r\n    var mergePaths = [];\r\n    forEach(data, function (key, value) {\r\n        var curPath = new Path(key);\r\n        validateFirebaseData(errorPrefix$$1, value, path.child(curPath));\r\n        if (curPath.getBack() === '.priority') {\r\n            if (!isValidPriority(value)) {\r\n                throw new Error(errorPrefix$$1 +\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$$1, 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(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(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(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(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(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(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(errorPrefix(fnName, argumentNumber, optional) + 'must be a boolean.');\r\n};\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        validateArgCount('OnDisconnect.cancel', 0, 1, arguments.length);\r\n        validateCallback('OnDisconnect.cancel', 1, onComplete, true);\r\n        var deferred = new 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        validateArgCount('OnDisconnect.remove', 0, 1, arguments.length);\r\n        validateWritablePath('OnDisconnect.remove', this.path_);\r\n        validateCallback('OnDisconnect.remove', 1, onComplete, true);\r\n        var deferred = new 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        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        validateCallback('OnDisconnect.set', 2, onComplete, true);\r\n        var deferred = new 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        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        validateCallback('OnDisconnect.setWithPriority', 3, onComplete, true);\r\n        var deferred = new 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        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        validateCallback('OnDisconnect.update', 2, onComplete, true);\r\n        var deferred = new 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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        assert(id.length === 20, 'nextPushId: Length should be 20.');\r\n        return id;\r\n    };\r\n})();\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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 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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        assert(typeof val === 'string' ||\r\n            typeof val === 'number' ||\r\n            (typeof val === 'object' && contains(val, '.sv')), 'Priority must be a string or number.');\r\n    }\r\n    else {\r\n        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    assert(priorityNode === MAX_NODE || priorityNode.getPriority().isEmpty(), \"Priority nodes can't have a priority of their own.\");\r\n};\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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            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            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        assert(otherIndex >= 0, 'Unknown leaf type: ' + otherLeafType);\r\n        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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 = 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 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        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 = clone(this.indexSet_);\r\n        newIndexSet[indexName] = indexDefinition;\r\n        var newIndexes = 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 = map(this.indexes_, function (indexedChildren, indexName) {\r\n            var index = safeGet(_this.indexSet_, indexName);\r\n            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 = 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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        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            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    __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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    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        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        forEach(jsonObj_1, function (key, childData) {\r\n            if (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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __extends(PathIndex, _super);\r\n    function PathIndex(indexPath_) {\r\n        var _this = _super.call(this) || this;\r\n        _this.indexPath_ = indexPath_;\r\n        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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        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        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        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        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        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        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        validateArgCount('DataSnapshot.forEach', 1, 1, arguments.length);\r\n        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        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        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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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 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        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            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 = getCount(other.callbacks_);\r\n                var thisCount = 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} */ = getAnyKey(other.callbacks_);\r\n                        var thisKey /** @type {!string} */ = 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 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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            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        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        validateArgCount('Query.on', 2, 4, arguments.length);\r\n        validateEventType('Query.on', 1, eventType, false);\r\n        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        validateArgCount('Query.off', 0, 3, arguments.length);\r\n        validateEventType('Query.off', 1, eventType, true);\r\n        validateCallback('Query.off', 2, callback, true);\r\n        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        validateArgCount('Query.once', 1, 4, arguments.length);\r\n        validateEventType('Query.once', 1, eventType, false);\r\n        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 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        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        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        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        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        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        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        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        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        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        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        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        validateArgCount('Query.isEqual', 1, 1, arguments.length);\r\n        if (!(other instanceof Query)) {\r\n            var error$$1 = 'Query.isEqual failed: First argument must be an instance of firebase.database.Query.';\r\n            throw new Error(error$$1);\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            validateCallback(fnName, 3, ret.cancel, true);\r\n            ret.context = context;\r\n            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(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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 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 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 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        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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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            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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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                    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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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        assert(childKey !== '.priority', 'Only non-priority child changes can be tracked.');\r\n        var oldChange = 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 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 getValues(this.changeMap_);\r\n    };\r\n    return ChildChangeAccumulator;\r\n}());\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        assert(viewCache\r\n            .getEventCache()\r\n            .getNode()\r\n            .isIndexed(this.filter_.getIndex()), 'Event snap not indexed');\r\n        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                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                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 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                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                    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                    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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            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            assert(this.viewCache_.getCompleteServerSnap(), 'We should always have a full cache before handling merges');\r\n            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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            assert(__referenceConstructor$1, 'Reference.ts has not been loaded');\r\n            return __referenceConstructor$1;\r\n        },\r\n        set: function (val) {\r\n            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 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 = safeGet(this.views_, queryId);\r\n            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            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 = 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            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 = 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        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 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 = 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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                    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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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        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        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                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        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 !!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                    else {\r\n                        // There is no overlap between root path and write path, ignore write\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 = 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                    else {\r\n                        // There is no overlap between root path and write path, ignore write\r\n                    }\r\n                }\r\n                else {\r\n                    throw 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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                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            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                else {\r\n                    // There's nothing below us, so nothing we need to start listening on\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        else {\r\n            // No-op, this listener must've been already 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                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            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                    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$$1 = errorForServerCode(status, query);\r\n                    return _this.removeEventRegistration(query, \r\n                    /*eventRegistration*/ null, error$$1);\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        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 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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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$$1) {\r\n            // TODO: Need to figure out all the cases this is raised and whether\r\n            // this makes sense.\r\n            if (error$$1 && error$$1.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$$1);\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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 (!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 deepCopy(this.counters_);\r\n    };\r\n    return StatsCollection;\r\n}());\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 = clone(newStats);\r\n        if (this.last_) {\r\n            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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        forEach(stats, function (stat, value) {\r\n            if (value > 0 && 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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            !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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 (!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                !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 = 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 = 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 (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 = 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 (!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 (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 (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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 (!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 (isNodeSdk()) {\r\n                var device = 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$$1 = e.message || e.data;\r\n            if (error$$1) {\r\n                this.log_(error$$1);\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$$1 = e.message || e.data;\r\n            if (error$$1) {\r\n                _this.log_(error$$1);\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 = 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        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 = 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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_ && !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_(stringify(msg));\r\n        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        assert(query.getQueryParams().isDefault() ||\r\n            !query.getQueryParams().loadsAllData(), 'listen() called for non-default but complete query');\r\n        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' && contains(payload, 'w')) {\r\n            var warnings = 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 || 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 = 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        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: ' + 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                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        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                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$$1) {\r\n                self_1.log_('Failed to get token: ' + error$$1);\r\n                if (!canceled_1) {\r\n                    if (CONSTANTS.NODE_ADMIN) {\r\n                        // This may be a critical error for the Admin Node.js SDK, so log a warning.\r\n                        // But getToken() may also just have temporarily failed, so we still want to\r\n                        // continue retrying.\r\n                        warn(error$$1);\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 (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 (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        forEach(this.listens_, function (pathString, queries) {\r\n            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 (CONSTANTS.NODE_ADMIN) {\r\n            clientName = 'admin_node';\r\n        }\r\n        else if (CONSTANTS.NODE_CLIENT) {\r\n            clientName = 'node';\r\n        }\r\n        stats['sdk.' + clientName + '.' + firebase.SDK_VERSION.replace(/\\./g, '-')] = 1;\r\n        if (isMobileCordova()) {\r\n            stats['framework.cordova'] = 1;\r\n        }\r\n        else if (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 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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            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 queryStringParamaters = query\r\n            .getQueryParams()\r\n            .toRestQueryStringParameters();\r\n        this.restRequest_(pathString + '.json', queryStringParamaters, function (error$$1, result) {\r\n            var data = result;\r\n            if (error$$1 === 404) {\r\n                data = null;\r\n                error$$1 = null;\r\n            }\r\n            if (error$$1 === null) {\r\n                _this.onDataUpdate_(pathString, data, /*isMerge=*/ false, tag);\r\n            }\r\n            if (safeGet(_this.listens_, listenId) === thisListen) {\r\n                var status_1;\r\n                if (!error$$1) {\r\n                    status_1 = 'ok';\r\n                }\r\n                else if (error$$1 == 401) {\r\n                    status_1 = 'permission_denied';\r\n                }\r\n                else {\r\n                    status_1 = 'rest_error:' + error$$1;\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                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 = 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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                    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 = 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 = 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        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            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 (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                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        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$$1 = new Error(message);\r\n                    error$$1.code = code;\r\n                    callback(error$$1);\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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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        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        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        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        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            assert(this.index_ instanceof PathIndex, 'Unrecognized index type!');\r\n            orderBy = this.index_.toString();\r\n        }\r\n        qs[REST_CONSTANTS.ORDER_BY] = stringify(orderBy);\r\n        if (this.startSet_) {\r\n            qs[REST_CONSTANTS.START_AT] = stringify(this.indexStartValue_);\r\n            if (this.startNameSet_) {\r\n                qs[REST_CONSTANTS.START_AT] += ',' + stringify(this.indexStartName_);\r\n            }\r\n        }\r\n        if (this.endSet_) {\r\n            qs[REST_CONSTANTS.END_AT] = stringify(this.indexEndValue_);\r\n            if (this.endNameSet_) {\r\n                qs[REST_CONSTANTS.END_AT] += ',' + 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    __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        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        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        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        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        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        validateCallback('Reference.set', 2, onComplete, true);\r\n        var deferred = new 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        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        validateCallback('Reference.update', 2, onComplete, true);\r\n        var deferred = new 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        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        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 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        validateArgCount('Reference.remove', 0, 1, arguments.length);\r\n        validateWritablePath('Reference.remove', this.path);\r\n        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        validateArgCount('Reference.transaction', 1, 3, arguments.length);\r\n        validateWritablePath('Reference.transaction', this.path);\r\n        validateCallback('Reference.transaction', 1, transactionUpdate, false);\r\n        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 Deferred();\r\n        if (typeof onComplete === 'function') {\r\n            deferred.promise.catch(function () { });\r\n        }\r\n        var promiseComplete = function (error$$1, committed, snapshot) {\r\n            if (error$$1) {\r\n                deferred.reject(error$$1);\r\n            }\r\n            else {\r\n                deferred.resolve(new TransactionResult(committed, snapshot));\r\n            }\r\n            if (typeof onComplete === 'function') {\r\n                onComplete(error$$1, 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        validateArgCount('Reference.setPriority', 1, 2, arguments.length);\r\n        validateWritablePath('Reference.setPriority', this.path);\r\n        validatePriority('Reference.setPriority', 1, priority, false);\r\n        validateCallback('Reference.setPriority', 2, onComplete, true);\r\n        var deferred = new 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        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        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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 = 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        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        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 = 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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            contains(newVal, '.priority')) {\r\n            priorityForNode = safeGet(newVal, '.priority');\r\n            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        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        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        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                        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                // Already marked.  No action needed.\r\n            }\r\n            else if (queue[i].status === TransactionStatus.SENT) {\r\n                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                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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 = safeGet(this.repos_, repo.app.name);\r\n        // This should never happen...\r\n        if (!appRepos || 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 = 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 = 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        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        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        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        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 __awaiter(this, void 0, void 0, function () {\r\n            return __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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 (isNodeSdk()) {\r\n        module.exports = namespace;\r\n    }\r\n}\r\nregisterDatabase(firebase);\n\nexport { registerDatabase, Database, Query, Reference, enableLogging, ServerValue, DataSnapshot, OnDisconnect };\n","import { ErrorFactory, createSubscribe } from '@firebase/util';\nimport { __extends, __awaiter, __generator, __assign } from 'tslib';\nimport firebase from '@firebase/app';\n\n/**\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\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 ERROR_CODES = {\r\n    AVAILABLE_IN_WINDOW: 'only-available-in-window',\r\n    AVAILABLE_IN_SW: 'only-available-in-sw',\r\n    SHOULD_BE_INHERITED: 'should-be-overriden',\r\n    BAD_SENDER_ID: 'bad-sender-id',\r\n    INCORRECT_GCM_SENDER_ID: 'incorrect-gcm-sender-id',\r\n    PERMISSION_DEFAULT: 'permission-default',\r\n    PERMISSION_BLOCKED: 'permission-blocked',\r\n    UNSUPPORTED_BROWSER: 'unsupported-browser',\r\n    NOTIFICATIONS_BLOCKED: 'notifications-blocked',\r\n    FAILED_DEFAULT_REGISTRATION: 'failed-serviceworker-registration',\r\n    SW_REGISTRATION_EXPECTED: 'sw-registration-expected',\r\n    GET_SUBSCRIPTION_FAILED: 'get-subscription-failed',\r\n    INVALID_SAVED_TOKEN: 'invalid-saved-token',\r\n    SW_REG_REDUNDANT: 'sw-reg-redundant',\r\n    TOKEN_SUBSCRIBE_FAILED: 'token-subscribe-failed',\r\n    TOKEN_SUBSCRIBE_NO_TOKEN: 'token-subscribe-no-token',\r\n    TOKEN_SUBSCRIBE_NO_PUSH_SET: 'token-subscribe-no-push-set',\r\n    TOKEN_UNSUBSCRIBE_FAILED: 'token-unsubscribe-failed',\r\n    TOKEN_UPDATE_FAILED: 'token-update-failed',\r\n    TOKEN_UPDATE_NO_TOKEN: 'token-update-no-token',\r\n    USE_SW_BEFORE_GET_TOKEN: 'use-sw-before-get-token',\r\n    INVALID_DELETE_TOKEN: 'invalid-delete-token',\r\n    DELETE_TOKEN_NOT_FOUND: 'delete-token-not-found',\r\n    DELETE_SCOPE_NOT_FOUND: 'delete-scope-not-found',\r\n    BG_HANDLER_FUNCTION_EXPECTED: 'bg-handler-function-expected',\r\n    NO_WINDOW_CLIENT_TO_MSG: 'no-window-client-to-msg',\r\n    UNABLE_TO_RESUBSCRIBE: 'unable-to-resubscribe',\r\n    NO_FCM_TOKEN_FOR_RESUBSCRIBE: 'no-fcm-token-for-resubscribe',\r\n    FAILED_TO_DELETE_TOKEN: 'failed-to-delete-token',\r\n    NO_SW_IN_REG: 'no-sw-in-reg',\r\n    BAD_SCOPE: 'bad-scope',\r\n    BAD_VAPID_KEY: 'bad-vapid-key',\r\n    BAD_SUBSCRIPTION: 'bad-subscription',\r\n    BAD_TOKEN: 'bad-token',\r\n    BAD_PUSH_SET: 'bad-push-set',\r\n    FAILED_DELETE_VAPID_KEY: 'failed-delete-vapid-key',\r\n    INVALID_PUBLIC_VAPID_KEY: 'invalid-public-vapid-key',\r\n    USE_PUBLIC_KEY_BEFORE_GET_TOKEN: 'use-public-key-before-get-token',\r\n    PUBLIC_KEY_DECRYPTION_FAILED: 'public-vapid-key-decryption-failed'\r\n};\r\nvar ERROR_MAP = (_a = {}, _a[ERROR_CODES.AVAILABLE_IN_WINDOW] = 'This method is available in a Window context.', _a[ERROR_CODES.AVAILABLE_IN_SW] = 'This method is available in a service worker ' + 'context.', _a[ERROR_CODES.SHOULD_BE_INHERITED] = 'This method should be overriden by ' + 'extended classes.', _a[ERROR_CODES.BAD_SENDER_ID] = \"Please ensure that 'messagingSenderId' is set \" +\r\n        'correctly in the options passed into firebase.initializeApp().', _a[ERROR_CODES.PERMISSION_DEFAULT] = 'The required permissions were not granted and ' + 'dismissed instead.', _a[ERROR_CODES.PERMISSION_BLOCKED] = 'The required permissions were not granted and ' + 'blocked instead.', _a[ERROR_CODES.UNSUPPORTED_BROWSER] = \"This browser doesn't support the API's \" +\r\n        'required to use the firebase SDK.', _a[ERROR_CODES.NOTIFICATIONS_BLOCKED] = 'Notifications have been blocked.', _a[ERROR_CODES.FAILED_DEFAULT_REGISTRATION] = 'We are unable to register the ' +\r\n        'default service worker. {$browserErrorMessage}', _a[ERROR_CODES.SW_REGISTRATION_EXPECTED] = 'A service worker registration was the ' + 'expected input.', _a[ERROR_CODES.GET_SUBSCRIPTION_FAILED] = 'There was an error when trying to get ' +\r\n        'any existing Push Subscriptions.', _a[ERROR_CODES.INVALID_SAVED_TOKEN] = 'Unable to access details of the saved token.', _a[ERROR_CODES.SW_REG_REDUNDANT] = 'The service worker being used for push was made ' + 'redundant.', _a[ERROR_CODES.TOKEN_SUBSCRIBE_FAILED] = 'A problem occured while subscribing the ' + 'user to FCM: {$message}', _a[ERROR_CODES.TOKEN_SUBSCRIBE_NO_TOKEN] = 'FCM returned no token when subscribing ' + 'the user to push.', _a[ERROR_CODES.TOKEN_SUBSCRIBE_NO_PUSH_SET] = 'FCM returned an invalid response ' + 'when getting an FCM token.', _a[ERROR_CODES.TOKEN_UNSUBSCRIBE_FAILED] = 'A problem occured while unsubscribing the ' + 'user from FCM: {$message}', _a[ERROR_CODES.TOKEN_UPDATE_FAILED] = 'A problem occured while updating the ' + 'user from FCM: {$message}', _a[ERROR_CODES.TOKEN_UPDATE_NO_TOKEN] = 'FCM returned no token when updating ' + 'the user to push.', _a[ERROR_CODES.USE_SW_BEFORE_GET_TOKEN] = 'The useServiceWorker() method may only be called once and must be ' +\r\n        'called before calling getToken() to ensure your service worker is used.', _a[ERROR_CODES.INVALID_DELETE_TOKEN] = 'You must pass a valid token into ' +\r\n        'deleteToken(), i.e. the token from getToken().', _a[ERROR_CODES.DELETE_TOKEN_NOT_FOUND] = 'The deletion attempt for token could not ' +\r\n        'be performed as the token was not found.', _a[ERROR_CODES.DELETE_SCOPE_NOT_FOUND] = 'The deletion attempt for service worker ' +\r\n        'scope could not be performed as the scope was not found.', _a[ERROR_CODES.BG_HANDLER_FUNCTION_EXPECTED] = 'The input to ' + 'setBackgroundMessageHandler() must be a function.', _a[ERROR_CODES.NO_WINDOW_CLIENT_TO_MSG] = 'An attempt was made to message a ' + 'non-existant window client.', _a[ERROR_CODES.UNABLE_TO_RESUBSCRIBE] = 'There was an error while re-subscribing ' +\r\n        'the FCM token for push messaging. Will have to resubscribe the ' +\r\n        'user on next visit. {$message}', _a[ERROR_CODES.NO_FCM_TOKEN_FOR_RESUBSCRIBE] = 'Could not find an FCM token ' +\r\n        'and as a result, unable to resubscribe. Will have to resubscribe the ' +\r\n        'user on next visit.', _a[ERROR_CODES.FAILED_TO_DELETE_TOKEN] = 'Unable to delete the currently saved token.', _a[ERROR_CODES.NO_SW_IN_REG] = 'Even though the service worker registration was ' +\r\n        'successful, there was a problem accessing the service worker itself.', _a[ERROR_CODES.INCORRECT_GCM_SENDER_ID] = \"Please change your web app manifest's \" +\r\n        \"'gcm_sender_id' value to '103953800507' to use Firebase messaging.\", _a[ERROR_CODES.BAD_SCOPE] = 'The service worker scope must be a string with at ' +\r\n        'least one character.', _a[ERROR_CODES.BAD_VAPID_KEY] = 'The public VAPID key is not a Uint8Array with 65 bytes.', _a[ERROR_CODES.BAD_SUBSCRIPTION] = 'The subscription must be a valid ' + 'PushSubscription.', _a[ERROR_CODES.BAD_TOKEN] = 'The FCM Token used for storage / lookup was not ' +\r\n        'a valid token string.', _a[ERROR_CODES.BAD_PUSH_SET] = 'The FCM push set used for storage / lookup was not ' +\r\n        'not a valid push set string.', _a[ERROR_CODES.FAILED_DELETE_VAPID_KEY] = 'The VAPID key could not be deleted.', _a[ERROR_CODES.INVALID_PUBLIC_VAPID_KEY] = 'The public VAPID key must be a string.', _a[ERROR_CODES.PUBLIC_KEY_DECRYPTION_FAILED] = 'The public VAPID key did not equal ' + '65 bytes when decrypted.', _a);\r\nvar errorFactory = new ErrorFactory('messaging', 'Messaging', ERROR_MAP);\r\nvar _a;\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 DEFAULT_PUBLIC_VAPID_KEY = new Uint8Array([\r\n    0x04,\r\n    0x33,\r\n    0x94,\r\n    0xf7,\r\n    0xdf,\r\n    0xa1,\r\n    0xeb,\r\n    0xb1,\r\n    0xdc,\r\n    0x03,\r\n    0xa2,\r\n    0x5e,\r\n    0x15,\r\n    0x71,\r\n    0xdb,\r\n    0x48,\r\n    0xd3,\r\n    0x2e,\r\n    0xed,\r\n    0xed,\r\n    0xb2,\r\n    0x34,\r\n    0xdb,\r\n    0xb7,\r\n    0x47,\r\n    0x3a,\r\n    0x0c,\r\n    0x8f,\r\n    0xc4,\r\n    0xcc,\r\n    0xe1,\r\n    0x6f,\r\n    0x3c,\r\n    0x8c,\r\n    0x84,\r\n    0xdf,\r\n    0xab,\r\n    0xb6,\r\n    0x66,\r\n    0x3e,\r\n    0xf2,\r\n    0x0c,\r\n    0xd4,\r\n    0x8b,\r\n    0xfe,\r\n    0xe3,\r\n    0xf9,\r\n    0x76,\r\n    0x2f,\r\n    0x14,\r\n    0x1c,\r\n    0x63,\r\n    0x08,\r\n    0x6a,\r\n    0x6f,\r\n    0x2d,\r\n    0xb1,\r\n    0x1a,\r\n    0x95,\r\n    0xb0,\r\n    0xce,\r\n    0x37,\r\n    0xc0,\r\n    0x9c,\r\n    0x6e\r\n]);\r\nvar ENDPOINT = 'https://fcm.googleapis.com';\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 MessageParameter;\r\n(function (MessageParameter) {\r\n    MessageParameter[\"TYPE_OF_MSG\"] = \"firebase-messaging-msg-type\";\r\n    MessageParameter[\"DATA\"] = \"firebase-messaging-msg-data\";\r\n})(MessageParameter || (MessageParameter = {}));\r\nvar MessageType;\r\n(function (MessageType) {\r\n    MessageType[\"PUSH_MSG_RECEIVED\"] = \"push-msg-received\";\r\n    MessageType[\"NOTIFICATION_CLICKED\"] = \"notification-clicked\";\r\n})(MessageType || (MessageType = {}));\n\n/**\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 */\r\nfunction isArrayBufferEqual(a, b) {\r\n    if (a == null || b == null) {\r\n        return false;\r\n    }\r\n    if (a === b) {\r\n        return true;\r\n    }\r\n    if (a.byteLength !== b.byteLength) {\r\n        return false;\r\n    }\r\n    var viewA = new DataView(a);\r\n    var viewB = new DataView(b);\r\n    for (var i = 0; i < a.byteLength; i++) {\r\n        if (viewA.getUint8(i) !== viewB.getUint8(i)) {\r\n            return false;\r\n        }\r\n    }\r\n    return true;\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 toBase64(arrayBuffer) {\r\n    var uint8Version = new Uint8Array(arrayBuffer);\r\n    return btoa(String.fromCharCode.apply(null, uint8Version));\r\n}\r\nfunction arrayBufferToBase64(arrayBuffer) {\r\n    var base64String = toBase64(arrayBuffer);\r\n    return base64String\r\n        .replace(/=/g, '')\r\n        .replace(/\\+/g, '-')\r\n        .replace(/\\//g, '_');\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 IIDModel = /** @class */ (function () {\r\n    function IIDModel() {\r\n    }\r\n    IIDModel.prototype.getToken = function (senderId, subscription, publicVapidKey) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var p256dh, auth, fcmSubscribeBody, applicationPubKey, headers, subscribeOptions, responseData, response, err_1, message;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        p256dh = arrayBufferToBase64(subscription.getKey('p256dh'));\r\n                        auth = arrayBufferToBase64(subscription.getKey('auth'));\r\n                        fcmSubscribeBody = \"authorized_entity=\" + senderId + \"&\" +\r\n                            (\"endpoint=\" + subscription.endpoint + \"&\") +\r\n                            (\"encryption_key=\" + p256dh + \"&\") +\r\n                            (\"encryption_auth=\" + auth);\r\n                        if (publicVapidKey !== DEFAULT_PUBLIC_VAPID_KEY) {\r\n                            applicationPubKey = arrayBufferToBase64(publicVapidKey);\r\n                            fcmSubscribeBody += \"&application_pub_key=\" + applicationPubKey;\r\n                        }\r\n                        headers = new Headers();\r\n                        headers.append('Content-Type', 'application/x-www-form-urlencoded');\r\n                        subscribeOptions = {\r\n                            method: 'POST',\r\n                            headers: headers,\r\n                            body: fcmSubscribeBody\r\n                        };\r\n                        _a.label = 1;\r\n                    case 1:\r\n                        _a.trys.push([1, 4, , 5]);\r\n                        return [4 /*yield*/, fetch(ENDPOINT + '/fcm/connect/subscribe', subscribeOptions)];\r\n                    case 2:\r\n                        response = _a.sent();\r\n                        return [4 /*yield*/, response.json()];\r\n                    case 3:\r\n                        responseData = _a.sent();\r\n                        return [3 /*break*/, 5];\r\n                    case 4:\r\n                        err_1 = _a.sent();\r\n                        throw errorFactory.create(ERROR_CODES.TOKEN_SUBSCRIBE_FAILED);\r\n                    case 5:\r\n                        if (responseData.error) {\r\n                            message = responseData.error.message;\r\n                            throw errorFactory.create(ERROR_CODES.TOKEN_SUBSCRIBE_FAILED, {\r\n                                message: message\r\n                            });\r\n                        }\r\n                        if (!responseData.token) {\r\n                            throw errorFactory.create(ERROR_CODES.TOKEN_SUBSCRIBE_NO_TOKEN);\r\n                        }\r\n                        if (!responseData.pushSet) {\r\n                            throw errorFactory.create(ERROR_CODES.TOKEN_SUBSCRIBE_NO_PUSH_SET);\r\n                        }\r\n                        return [2 /*return*/, {\r\n                                token: responseData.token,\r\n                                pushSet: responseData.pushSet\r\n                            }];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Update the underlying token details for fcmToken.\r\n     */\r\n    IIDModel.prototype.updateToken = function (senderId, fcmToken, fcmPushSet, subscription, publicVapidKey) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var p256dh, auth, fcmUpdateBody, applicationPubKey, headers, updateOptions, responseData, response, err_2, message;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        p256dh = arrayBufferToBase64(subscription.getKey('p256dh'));\r\n                        auth = arrayBufferToBase64(subscription.getKey('auth'));\r\n                        fcmUpdateBody = \"push_set=\" + fcmPushSet + \"&\" +\r\n                            (\"token=\" + fcmToken + \"&\") +\r\n                            (\"authorized_entity=\" + senderId + \"&\") +\r\n                            (\"endpoint=\" + subscription.endpoint + \"&\") +\r\n                            (\"encryption_key=\" + p256dh + \"&\") +\r\n                            (\"encryption_auth=\" + auth);\r\n                        if (publicVapidKey !== DEFAULT_PUBLIC_VAPID_KEY) {\r\n                            applicationPubKey = arrayBufferToBase64(publicVapidKey);\r\n                            fcmUpdateBody += \"&application_pub_key=\" + applicationPubKey;\r\n                        }\r\n                        headers = new Headers();\r\n                        headers.append('Content-Type', 'application/x-www-form-urlencoded');\r\n                        updateOptions = {\r\n                            method: 'POST',\r\n                            headers: headers,\r\n                            body: fcmUpdateBody\r\n                        };\r\n                        _a.label = 1;\r\n                    case 1:\r\n                        _a.trys.push([1, 4, , 5]);\r\n                        return [4 /*yield*/, fetch(ENDPOINT + '/fcm/connect/subscribe', updateOptions)];\r\n                    case 2:\r\n                        response = _a.sent();\r\n                        return [4 /*yield*/, response.json()];\r\n                    case 3:\r\n                        responseData = _a.sent();\r\n                        return [3 /*break*/, 5];\r\n                    case 4:\r\n                        err_2 = _a.sent();\r\n                        throw errorFactory.create(ERROR_CODES.TOKEN_UPDATE_FAILED);\r\n                    case 5:\r\n                        if (responseData.error) {\r\n                            message = responseData.error.message;\r\n                            throw errorFactory.create(ERROR_CODES.TOKEN_UPDATE_FAILED, {\r\n                                message: message\r\n                            });\r\n                        }\r\n                        if (!responseData.token) {\r\n                            throw errorFactory.create(ERROR_CODES.TOKEN_UPDATE_NO_TOKEN);\r\n                        }\r\n                        return [2 /*return*/, responseData.token];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Given a fcmToken, pushSet and messagingSenderId, delete an FCM token.\r\n     */\r\n    IIDModel.prototype.deleteToken = function (senderId, fcmToken, fcmPushSet) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var fcmUnsubscribeBody, headers, unsubscribeOptions, response, responseData, message, err_3;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        fcmUnsubscribeBody = \"authorized_entity=\" + senderId + \"&\" +\r\n                            (\"token=\" + fcmToken + \"&\") +\r\n                            (\"pushSet=\" + fcmPushSet);\r\n                        headers = new Headers();\r\n                        headers.append('Content-Type', 'application/x-www-form-urlencoded');\r\n                        unsubscribeOptions = {\r\n                            method: 'POST',\r\n                            headers: headers,\r\n                            body: fcmUnsubscribeBody\r\n                        };\r\n                        _a.label = 1;\r\n                    case 1:\r\n                        _a.trys.push([1, 4, , 5]);\r\n                        return [4 /*yield*/, fetch(ENDPOINT + '/fcm/connect/unsubscribe', unsubscribeOptions)];\r\n                    case 2:\r\n                        response = _a.sent();\r\n                        return [4 /*yield*/, response.json()];\r\n                    case 3:\r\n                        responseData = _a.sent();\r\n                        if (responseData.error) {\r\n                            message = responseData.error.message;\r\n                            throw errorFactory.create(ERROR_CODES.TOKEN_UNSUBSCRIBE_FAILED, {\r\n                                message: message\r\n                            });\r\n                        }\r\n                        return [3 /*break*/, 5];\r\n                    case 4:\r\n                        err_3 = _a.sent();\r\n                        throw errorFactory.create(ERROR_CODES.TOKEN_UNSUBSCRIBE_FAILED);\r\n                    case 5: return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    return IIDModel;\r\n}());\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 base64ToArrayBuffer(base64String) {\r\n    var padding = '='.repeat((4 - base64String.length % 4) % 4);\r\n    var base64 = (base64String + padding)\r\n        .replace(/\\-/g, '+')\r\n        .replace(/_/g, '/');\r\n    var rawData = window.atob(base64);\r\n    var outputArray = new Uint8Array(rawData.length);\r\n    for (var i = 0; i < rawData.length; ++i) {\r\n        outputArray[i] = rawData.charCodeAt(i);\r\n    }\r\n    return outputArray;\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 OLD_DB_NAME = 'undefined';\r\nvar OLD_OBJECT_STORE_NAME = 'fcm_token_object_Store';\r\nfunction handleDb(db) {\r\n    if (!db.objectStoreNames.contains(OLD_OBJECT_STORE_NAME)) {\r\n        // We found a database with the name 'undefined', but our expected object\r\n        // store isn't defined.\r\n        return;\r\n    }\r\n    var transaction = db.transaction(OLD_OBJECT_STORE_NAME);\r\n    var objectStore = transaction.objectStore(OLD_OBJECT_STORE_NAME);\r\n    var iidModel = new IIDModel();\r\n    var openCursorRequest = objectStore.openCursor();\r\n    openCursorRequest.onerror = function (event) {\r\n        // NOOP - Nothing we can do.\r\n        console.warn('Unable to cleanup old IDB.', event);\r\n    };\r\n    openCursorRequest.onsuccess = function () {\r\n        var cursor = openCursorRequest.result;\r\n        if (cursor) {\r\n            // cursor.value contains the current record being iterated through\r\n            // this is where you'd do something with the result\r\n            var tokenDetails = cursor.value;\r\n            iidModel.deleteToken(tokenDetails.fcmSenderId, tokenDetails.fcmToken, tokenDetails.fcmPushSet);\r\n            cursor.continue();\r\n        }\r\n        else {\r\n            db.close();\r\n            indexedDB.deleteDatabase(OLD_DB_NAME);\r\n        }\r\n    };\r\n}\r\nfunction cleanV1() {\r\n    var request = indexedDB.open(OLD_DB_NAME);\r\n    request.onerror = function (event) {\r\n        // NOOP - Nothing we can do.\r\n    };\r\n    request.onsuccess = function (event) {\r\n        var db = request.result;\r\n        handleDb(db);\r\n    };\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 DBInterface = /** @class */ (function () {\r\n    function DBInterface() {\r\n        this.dbPromise = null;\r\n    }\r\n    /** Gets record(s) from the objectStore that match the given key. */\r\n    DBInterface.prototype.get = function (key) {\r\n        return this.createTransaction(function (objectStore) { return objectStore.get(key); });\r\n    };\r\n    /** Gets record(s) from the objectStore that match the given index. */\r\n    DBInterface.prototype.getIndex = function (index, key) {\r\n        function runRequest(objectStore) {\r\n            var idbIndex = objectStore.index(index);\r\n            return idbIndex.get(key);\r\n        }\r\n        return this.createTransaction(runRequest);\r\n    };\r\n    /** Assigns or overwrites the record for the given value. */\r\n    // tslint:disable-next-line:no-any IndexedDB values are of type \"any\"\r\n    DBInterface.prototype.put = function (value) {\r\n        return this.createTransaction(function (objectStore) { return objectStore.put(value); }, 'readwrite');\r\n    };\r\n    /** Deletes record(s) from the objectStore that match the given key. */\r\n    DBInterface.prototype.delete = function (key) {\r\n        return this.createTransaction(function (objectStore) { return objectStore.delete(key); }, 'readwrite');\r\n    };\r\n    /**\r\n     * Close the currently open database.\r\n     */\r\n    DBInterface.prototype.closeDatabase = function () {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var db;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        if (!this.dbPromise) return [3 /*break*/, 2];\r\n                        return [4 /*yield*/, this.dbPromise];\r\n                    case 1:\r\n                        db = _a.sent();\r\n                        db.close();\r\n                        this.dbPromise = null;\r\n                        _a.label = 2;\r\n                    case 2: return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Creates an IndexedDB Transaction and passes its objectStore to the\r\n     * runRequest function, which runs the database request.\r\n     *\r\n     * @return Promise that resolves with the result of the runRequest function\r\n     */\r\n    DBInterface.prototype.createTransaction = function (runRequest, mode) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var db, transaction, request, result;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, this.getDb()];\r\n                    case 1:\r\n                        db = _a.sent();\r\n                        transaction = db.transaction(this.objectStoreName, mode);\r\n                        request = transaction.objectStore(this.objectStoreName);\r\n                        return [4 /*yield*/, promisify(runRequest(request))];\r\n                    case 2:\r\n                        result = _a.sent();\r\n                        return [2 /*return*/, new Promise(function (resolve, reject) {\r\n                                transaction.oncomplete = function () {\r\n                                    resolve(result);\r\n                                };\r\n                                transaction.onerror = function () {\r\n                                    reject(transaction.error);\r\n                                };\r\n                            })];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /** Gets the cached db connection or opens a new one. */\r\n    DBInterface.prototype.getDb = function () {\r\n        var _this = this;\r\n        if (!this.dbPromise) {\r\n            this.dbPromise = new Promise(function (resolve, reject) {\r\n                var request = indexedDB.open(_this.dbName, _this.dbVersion);\r\n                request.onsuccess = function () {\r\n                    resolve(request.result);\r\n                };\r\n                request.onerror = function () {\r\n                    _this.dbPromise = null;\r\n                    reject(request.error);\r\n                };\r\n                request.onupgradeneeded = function (event) { return _this.onDbUpgrade(request, event); };\r\n            });\r\n        }\r\n        return this.dbPromise;\r\n    };\r\n    return DBInterface;\r\n}());\r\n/** Promisifies an IDBRequest. Resolves with the IDBRequest's result. */\r\nfunction promisify(request) {\r\n    return new Promise(function (resolve, reject) {\r\n        request.onsuccess = function () {\r\n            resolve(request.result);\r\n        };\r\n        request.onerror = function () {\r\n            reject(request.error);\r\n        };\r\n    });\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 TokenDetailsModel = /** @class */ (function (_super) {\r\n    __extends(TokenDetailsModel, _super);\r\n    function TokenDetailsModel() {\r\n        var _this = _super !== null && _super.apply(this, arguments) || this;\r\n        _this.dbName = 'fcm_token_details_db';\r\n        _this.dbVersion = 3;\r\n        _this.objectStoreName = 'fcm_token_object_Store';\r\n        return _this;\r\n    }\r\n    TokenDetailsModel.prototype.onDbUpgrade = function (request, event) {\r\n        var db = request.result;\r\n        // Lack of 'break' statements is intentional.\r\n        switch (event.oldVersion) {\r\n            case 0: {\r\n                // New IDB instance\r\n                var objectStore = db.createObjectStore(this.objectStoreName, {\r\n                    keyPath: 'swScope'\r\n                });\r\n                // Make sure the sender ID can be searched\r\n                objectStore.createIndex('fcmSenderId', 'fcmSenderId', {\r\n                    unique: false\r\n                });\r\n                objectStore.createIndex('fcmToken', 'fcmToken', { unique: true });\r\n            }\r\n            case 1: {\r\n                // Prior to version 2, we were using either 'fcm_token_details_db'\r\n                // or 'undefined' as the database name due to bug in the SDK\r\n                // So remove the old tokens and databases.\r\n                cleanV1();\r\n            }\r\n            case 2: {\r\n                var objectStore = request.transaction.objectStore(this.objectStoreName);\r\n                var cursorRequest_1 = objectStore.openCursor();\r\n                cursorRequest_1.onsuccess = function () {\r\n                    var cursor = cursorRequest_1.result;\r\n                    if (cursor) {\r\n                        var value = cursor.value;\r\n                        var newValue = __assign({}, value);\r\n                        if (!value.createTime) {\r\n                            newValue.createTime = Date.now();\r\n                        }\r\n                        if (typeof value.vapidKey === 'string') {\r\n                            newValue.vapidKey = base64ToArrayBuffer(value.vapidKey);\r\n                        }\r\n                        if (typeof value.auth === 'string') {\r\n                            newValue.auth = base64ToArrayBuffer(value.auth).buffer;\r\n                        }\r\n                        if (typeof value.auth === 'string') {\r\n                            newValue.p256dh = base64ToArrayBuffer(value.p256dh).buffer;\r\n                        }\r\n                        cursor.update(newValue);\r\n                        cursor.continue();\r\n                    }\r\n                };\r\n            }\r\n        }\r\n    };\r\n    /**\r\n     * Given a token, this method will look up the details in indexedDB.\r\n     */\r\n    TokenDetailsModel.prototype.getTokenDetailsFromToken = function (fcmToken) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            return __generator(this, function (_a) {\r\n                if (!fcmToken) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_TOKEN);\r\n                }\r\n                validateInputs({ fcmToken: fcmToken });\r\n                return [2 /*return*/, this.getIndex('fcmToken', fcmToken)];\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Given a service worker scope, this method will look up the details in\r\n     * indexedDB.\r\n     * @return The details associated with that token.\r\n     */\r\n    TokenDetailsModel.prototype.getTokenDetailsFromSWScope = function (swScope) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            return __generator(this, function (_a) {\r\n                if (!swScope) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_SCOPE);\r\n                }\r\n                validateInputs({ swScope: swScope });\r\n                return [2 /*return*/, this.get(swScope)];\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Save the details for the fcm token for re-use at a later date.\r\n     * @param input A plain js object containing args to save.\r\n     */\r\n    TokenDetailsModel.prototype.saveTokenDetails = function (tokenDetails) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            return __generator(this, function (_a) {\r\n                if (!tokenDetails.swScope) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_SCOPE);\r\n                }\r\n                if (!tokenDetails.vapidKey) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_VAPID_KEY);\r\n                }\r\n                if (!tokenDetails.endpoint || !tokenDetails.auth || !tokenDetails.p256dh) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_SUBSCRIPTION);\r\n                }\r\n                if (!tokenDetails.fcmSenderId) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_SENDER_ID);\r\n                }\r\n                if (!tokenDetails.fcmToken) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_TOKEN);\r\n                }\r\n                if (!tokenDetails.fcmPushSet) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_PUSH_SET);\r\n                }\r\n                validateInputs(tokenDetails);\r\n                return [2 /*return*/, this.put(tokenDetails)];\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This method deletes details of the current FCM token.\r\n     * It's returning a promise in case we need to move to an async\r\n     * method for deleting at a later date.\r\n     *\r\n     * @return Resolves once the FCM token details have been deleted and returns\r\n     * the deleted details.\r\n     */\r\n    TokenDetailsModel.prototype.deleteToken = function (token) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var details;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        if (typeof token !== 'string' || token.length === 0) {\r\n                            return [2 /*return*/, Promise.reject(errorFactory.create(ERROR_CODES.INVALID_DELETE_TOKEN))];\r\n                        }\r\n                        return [4 /*yield*/, this.getTokenDetailsFromToken(token)];\r\n                    case 1:\r\n                        details = _a.sent();\r\n                        if (!details) {\r\n                            throw errorFactory.create(ERROR_CODES.DELETE_TOKEN_NOT_FOUND);\r\n                        }\r\n                        return [4 /*yield*/, this.delete(details.swScope)];\r\n                    case 2:\r\n                        _a.sent();\r\n                        return [2 /*return*/, details];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    return TokenDetailsModel;\r\n}(DBInterface));\r\n/**\r\n * This method takes an object and will check for known arguments and\r\n * validate the input.\r\n * @return Promise that resolves if input is valid, rejects otherwise.\r\n */\r\nfunction validateInputs(input) {\r\n    if (input.fcmToken) {\r\n        if (typeof input.fcmToken !== 'string' || input.fcmToken.length === 0) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_TOKEN);\r\n        }\r\n    }\r\n    if (input.swScope) {\r\n        if (typeof input.swScope !== 'string' || input.swScope.length === 0) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_SCOPE);\r\n        }\r\n    }\r\n    if (input.vapidKey) {\r\n        if (!(input.vapidKey instanceof Uint8Array) ||\r\n            input.vapidKey.length !== 65) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_VAPID_KEY);\r\n        }\r\n    }\r\n    if (input.endpoint) {\r\n        if (typeof input.endpoint !== 'string' || input.endpoint.length === 0) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_SUBSCRIPTION);\r\n        }\r\n    }\r\n    if (input.auth) {\r\n        if (!(input.auth instanceof ArrayBuffer)) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_SUBSCRIPTION);\r\n        }\r\n    }\r\n    if (input.p256dh) {\r\n        if (!(input.p256dh instanceof ArrayBuffer)) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_SUBSCRIPTION);\r\n        }\r\n    }\r\n    if (input.fcmSenderId) {\r\n        if (typeof input.fcmSenderId !== 'string' ||\r\n            input.fcmSenderId.length === 0) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_SENDER_ID);\r\n        }\r\n    }\r\n    if (input.fcmPushSet) {\r\n        if (typeof input.fcmPushSet !== 'string' || input.fcmPushSet.length === 0) {\r\n            throw errorFactory.create(ERROR_CODES.BAD_PUSH_SET);\r\n        }\r\n    }\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 UNCOMPRESSED_PUBLIC_KEY_SIZE = 65;\r\nvar VapidDetailsModel = /** @class */ (function (_super) {\r\n    __extends(VapidDetailsModel, _super);\r\n    function VapidDetailsModel() {\r\n        var _this = _super !== null && _super.apply(this, arguments) || this;\r\n        _this.dbName = 'fcm_vapid_details_db';\r\n        _this.dbVersion = 1;\r\n        _this.objectStoreName = 'fcm_vapid_object_Store';\r\n        return _this;\r\n    }\r\n    VapidDetailsModel.prototype.onDbUpgrade = function (request) {\r\n        var db = request.result;\r\n        db.createObjectStore(this.objectStoreName, { keyPath: 'swScope' });\r\n    };\r\n    /**\r\n     * Given a service worker scope, this method will look up the vapid key\r\n     * in indexedDB.\r\n     */\r\n    VapidDetailsModel.prototype.getVapidFromSWScope = function (swScope) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var result;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        if (typeof swScope !== 'string' || swScope.length === 0) {\r\n                            throw errorFactory.create(ERROR_CODES.BAD_SCOPE);\r\n                        }\r\n                        return [4 /*yield*/, this.get(swScope)];\r\n                    case 1:\r\n                        result = _a.sent();\r\n                        return [2 /*return*/, result ? result.vapidKey : undefined];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Save a vapid key against a swScope for later date.\r\n     */\r\n    VapidDetailsModel.prototype.saveVapidDetails = function (swScope, vapidKey) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var details;\r\n            return __generator(this, function (_a) {\r\n                if (typeof swScope !== 'string' || swScope.length === 0) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_SCOPE);\r\n                }\r\n                if (vapidKey === null || vapidKey.length !== UNCOMPRESSED_PUBLIC_KEY_SIZE) {\r\n                    throw errorFactory.create(ERROR_CODES.BAD_VAPID_KEY);\r\n                }\r\n                details = {\r\n                    swScope: swScope,\r\n                    vapidKey: vapidKey\r\n                };\r\n                return [2 /*return*/, this.put(details)];\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This method deletes details of the current FCM VAPID key for a SW scope.\r\n     * Resolves once the scope/vapid details have been deleted and returns the\r\n     * deleted vapid key.\r\n     */\r\n    VapidDetailsModel.prototype.deleteVapidDetails = function (swScope) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var vapidKey;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, this.getVapidFromSWScope(swScope)];\r\n                    case 1:\r\n                        vapidKey = _a.sent();\r\n                        if (!vapidKey) {\r\n                            throw errorFactory.create(ERROR_CODES.DELETE_SCOPE_NOT_FOUND);\r\n                        }\r\n                        return [4 /*yield*/, this.delete(swScope)];\r\n                    case 2:\r\n                        _a.sent();\r\n                        return [2 /*return*/, vapidKey];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    return VapidDetailsModel;\r\n}(DBInterface));\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 SENDER_ID_OPTION_NAME = 'messagingSenderId';\r\n// Database cache should be invalidated once a week.\r\nvar TOKEN_EXPIRATION_MILLIS = 7 * 24 * 60 * 60 * 1000; // 7 days\r\nvar ControllerInterface = /** @class */ (function () {\r\n    /**\r\n     * An interface of the Messaging Service API\r\n     */\r\n    function ControllerInterface(app) {\r\n        var _this = this;\r\n        if (!app.options[SENDER_ID_OPTION_NAME] ||\r\n            typeof app.options[SENDER_ID_OPTION_NAME] !== 'string') {\r\n            throw errorFactory.create(ERROR_CODES.BAD_SENDER_ID);\r\n        }\r\n        this.messagingSenderId = app.options[SENDER_ID_OPTION_NAME];\r\n        this.tokenDetailsModel = new TokenDetailsModel();\r\n        this.vapidDetailsModel = new VapidDetailsModel();\r\n        this.iidModel = new IIDModel();\r\n        this.app = app;\r\n        this.INTERNAL = {\r\n            delete: function () { return _this.delete(); }\r\n        };\r\n    }\r\n    /**\r\n     * @export\r\n     */\r\n    ControllerInterface.prototype.getToken = function () {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var currentPermission, swReg, publicVapidKey, pushSubscription, tokenDetails;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        currentPermission = this.getNotificationPermission_();\r\n                        if (currentPermission !== 'granted') {\r\n                            if (currentPermission === 'denied') {\r\n                                return [2 /*return*/, Promise.reject(errorFactory.create(ERROR_CODES.NOTIFICATIONS_BLOCKED))];\r\n                            }\r\n                            // We must wait for permission to be granted\r\n                            return [2 /*return*/, Promise.resolve(null)];\r\n                        }\r\n                        return [4 /*yield*/, this.getSWRegistration_()];\r\n                    case 1:\r\n                        swReg = _a.sent();\r\n                        return [4 /*yield*/, this.getPublicVapidKey_()];\r\n                    case 2:\r\n                        publicVapidKey = _a.sent();\r\n                        return [4 /*yield*/, this.getPushSubscription(swReg, publicVapidKey)];\r\n                    case 3:\r\n                        pushSubscription = _a.sent();\r\n                        return [4 /*yield*/, this.tokenDetailsModel.getTokenDetailsFromSWScope(swReg.scope)];\r\n                    case 4:\r\n                        tokenDetails = _a.sent();\r\n                        if (tokenDetails) {\r\n                            return [2 /*return*/, this.manageExistingToken(swReg, pushSubscription, publicVapidKey, tokenDetails)];\r\n                        }\r\n                        return [2 /*return*/, this.getNewToken(swReg, pushSubscription, publicVapidKey)];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * manageExistingToken is triggered if there's an existing FCM token in the\r\n     * database and it can take 3 different actions:\r\n     * 1) Retrieve the existing FCM token from the database.\r\n     * 2) If VAPID details have changed: Delete the existing token and create a\r\n     * new one with the new VAPID key.\r\n     * 3) If the database cache is invalidated: Send a request to FCM to update\r\n     * the token, and to check if the token is still valid on FCM-side.\r\n     */\r\n    ControllerInterface.prototype.manageExistingToken = function (swReg, pushSubscription, publicVapidKey, tokenDetails) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var isTokenValid, now;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        isTokenValid = isTokenStillValid(pushSubscription, publicVapidKey, tokenDetails);\r\n                        if (isTokenValid) {\r\n                            now = Date.now();\r\n                            if (now < tokenDetails.createTime + TOKEN_EXPIRATION_MILLIS) {\r\n                                return [2 /*return*/, tokenDetails.fcmToken];\r\n                            }\r\n                            else {\r\n                                return [2 /*return*/, this.updateToken(swReg, pushSubscription, publicVapidKey, tokenDetails)];\r\n                            }\r\n                        }\r\n                        // If the token is no longer valid (for example if the VAPID details\r\n                        // have changed), delete the existing token from the FCM client and server\r\n                        // database. No need to unsubscribe from the Service Worker as we have a\r\n                        // good push subscription that we'd like to use in getNewToken.\r\n                        return [4 /*yield*/, this.deleteTokenFromDB(tokenDetails.fcmToken)];\r\n                    case 1:\r\n                        // If the token is no longer valid (for example if the VAPID details\r\n                        // have changed), delete the existing token from the FCM client and server\r\n                        // database. No need to unsubscribe from the Service Worker as we have a\r\n                        // good push subscription that we'd like to use in getNewToken.\r\n                        _a.sent();\r\n                        return [2 /*return*/, this.getNewToken(swReg, pushSubscription, publicVapidKey)];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    ControllerInterface.prototype.updateToken = function (swReg, pushSubscription, publicVapidKey, tokenDetails) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var updatedToken, allDetails, e_1;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        _a.trys.push([0, 4, , 6]);\r\n                        return [4 /*yield*/, this.iidModel.updateToken(this.messagingSenderId, tokenDetails.fcmToken, tokenDetails.fcmPushSet, pushSubscription, publicVapidKey)];\r\n                    case 1:\r\n                        updatedToken = _a.sent();\r\n                        allDetails = {\r\n                            swScope: swReg.scope,\r\n                            vapidKey: publicVapidKey,\r\n                            fcmSenderId: this.messagingSenderId,\r\n                            fcmToken: updatedToken,\r\n                            fcmPushSet: tokenDetails.fcmPushSet,\r\n                            createTime: Date.now(),\r\n                            endpoint: pushSubscription.endpoint,\r\n                            auth: pushSubscription.getKey('auth'),\r\n                            p256dh: pushSubscription.getKey('p256dh')\r\n                        };\r\n                        return [4 /*yield*/, this.tokenDetailsModel.saveTokenDetails(allDetails)];\r\n                    case 2:\r\n                        _a.sent();\r\n                        return [4 /*yield*/, this.vapidDetailsModel.saveVapidDetails(swReg.scope, publicVapidKey)];\r\n                    case 3:\r\n                        _a.sent();\r\n                        return [2 /*return*/, updatedToken];\r\n                    case 4:\r\n                        e_1 = _a.sent();\r\n                        return [4 /*yield*/, this.deleteToken(tokenDetails.fcmToken)];\r\n                    case 5:\r\n                        _a.sent();\r\n                        throw e_1;\r\n                    case 6: return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    ControllerInterface.prototype.getNewToken = function (swReg, pushSubscription, publicVapidKey) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var tokenDetails, allDetails;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, this.iidModel.getToken(this.messagingSenderId, pushSubscription, publicVapidKey)];\r\n                    case 1:\r\n                        tokenDetails = _a.sent();\r\n                        allDetails = {\r\n                            swScope: swReg.scope,\r\n                            vapidKey: publicVapidKey,\r\n                            fcmSenderId: this.messagingSenderId,\r\n                            fcmToken: tokenDetails.token,\r\n                            fcmPushSet: tokenDetails.pushSet,\r\n                            createTime: Date.now(),\r\n                            endpoint: pushSubscription.endpoint,\r\n                            auth: pushSubscription.getKey('auth'),\r\n                            p256dh: pushSubscription.getKey('p256dh')\r\n                        };\r\n                        return [4 /*yield*/, this.tokenDetailsModel.saveTokenDetails(allDetails)];\r\n                    case 2:\r\n                        _a.sent();\r\n                        return [4 /*yield*/, this.vapidDetailsModel.saveVapidDetails(swReg.scope, publicVapidKey)];\r\n                    case 3:\r\n                        _a.sent();\r\n                        return [2 /*return*/, tokenDetails.token];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This method deletes tokens that the token manager looks after,\r\n     * unsubscribes the token from FCM  and then unregisters the push\r\n     * subscription if it exists. It returns a promise that indicates\r\n     * whether or not the unsubscribe request was processed successfully.\r\n     * @export\r\n     */\r\n    ControllerInterface.prototype.deleteToken = function (token) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var registration, pushSubscription;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: \r\n                    // Delete the token details from the database.\r\n                    return [4 /*yield*/, this.deleteTokenFromDB(token)];\r\n                    case 1:\r\n                        // Delete the token details from the database.\r\n                        _a.sent();\r\n                        return [4 /*yield*/, this.getSWRegistration_()];\r\n                    case 2:\r\n                        registration = _a.sent();\r\n                        if (!registration) return [3 /*break*/, 4];\r\n                        return [4 /*yield*/, registration.pushManager.getSubscription()];\r\n                    case 3:\r\n                        pushSubscription = _a.sent();\r\n                        if (pushSubscription) {\r\n                            return [2 /*return*/, pushSubscription.unsubscribe()];\r\n                        }\r\n                        _a.label = 4;\r\n                    case 4: \r\n                    // If there's no SW, consider it a success.\r\n                    return [2 /*return*/, true];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This method will delete the token from the client database, and make a\r\n     * call to FCM to remove it from the server DB. Does not temper with the\r\n     * push subscription.\r\n     */\r\n    ControllerInterface.prototype.deleteTokenFromDB = function (token) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var details;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, this.tokenDetailsModel.deleteToken(token)];\r\n                    case 1:\r\n                        details = _a.sent();\r\n                        return [4 /*yield*/, this.iidModel.deleteToken(details.fcmSenderId, details.fcmToken, details.fcmPushSet)];\r\n                    case 2:\r\n                        _a.sent();\r\n                        return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Gets a PushSubscription for the current user.\r\n     */\r\n    ControllerInterface.prototype.getPushSubscription = function (swRegistration, publicVapidKey) {\r\n        return swRegistration.pushManager.getSubscription().then(function (subscription) {\r\n            if (subscription) {\r\n                return subscription;\r\n            }\r\n            return swRegistration.pushManager.subscribe({\r\n                userVisibleOnly: true,\r\n                applicationServerKey: publicVapidKey\r\n            });\r\n        });\r\n    };\r\n    //\r\n    // The following methods should only be available in the window.\r\n    //\r\n    ControllerInterface.prototype.requestPermission = function () {\r\n        throw errorFactory.create(ERROR_CODES.AVAILABLE_IN_WINDOW);\r\n    };\r\n    ControllerInterface.prototype.useServiceWorker = function (registration) {\r\n        throw errorFactory.create(ERROR_CODES.AVAILABLE_IN_WINDOW);\r\n    };\r\n    ControllerInterface.prototype.usePublicVapidKey = function (b64PublicKey) {\r\n        throw errorFactory.create(ERROR_CODES.AVAILABLE_IN_WINDOW);\r\n    };\r\n    ControllerInterface.prototype.onMessage = function (nextOrObserver, error, completed) {\r\n        throw errorFactory.create(ERROR_CODES.AVAILABLE_IN_WINDOW);\r\n    };\r\n    ControllerInterface.prototype.onTokenRefresh = function (nextOrObserver, error, completed) {\r\n        throw errorFactory.create(ERROR_CODES.AVAILABLE_IN_WINDOW);\r\n    };\r\n    //\r\n    // The following methods are used by the service worker only.\r\n    //\r\n    ControllerInterface.prototype.setBackgroundMessageHandler = function (callback) {\r\n        throw errorFactory.create(ERROR_CODES.AVAILABLE_IN_SW);\r\n    };\r\n    //\r\n    // The following methods are used by the service themselves and not exposed\r\n    // publicly or not expected to be used by developers.\r\n    //\r\n    /**\r\n     * This method is required to adhere to the Firebase interface.\r\n     * It closes any currently open indexdb database connections.\r\n     */\r\n    ControllerInterface.prototype.delete = function () {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, Promise.all([\r\n                            this.tokenDetailsModel.closeDatabase(),\r\n                            this.vapidDetailsModel.closeDatabase()\r\n                        ])];\r\n                    case 1:\r\n                        _a.sent();\r\n                        return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Returns the current Notification Permission state.\r\n     */\r\n    ControllerInterface.prototype.getNotificationPermission_ = function () {\r\n        // TODO: Remove the cast when this issue is fixed:\r\n        // https://github.com/Microsoft/TypeScript/issues/14701\r\n        // tslint:disable-next-line no-any\r\n        return Notification.permission;\r\n    };\r\n    ControllerInterface.prototype.getTokenDetailsModel = function () {\r\n        return this.tokenDetailsModel;\r\n    };\r\n    ControllerInterface.prototype.getVapidDetailsModel = function () {\r\n        return this.vapidDetailsModel;\r\n    };\r\n    // Visible for testing\r\n    // TODO: make protected\r\n    ControllerInterface.prototype.getIIDModel = function () {\r\n        return this.iidModel;\r\n    };\r\n    return ControllerInterface;\r\n}());\r\n/**\r\n * Checks if the tokenDetails match the details provided in the clients.\r\n */\r\nfunction isTokenStillValid(pushSubscription, publicVapidKey, tokenDetails) {\r\n    if (!isArrayBufferEqual(publicVapidKey.buffer, tokenDetails.vapidKey.buffer)) {\r\n        return false;\r\n    }\r\n    var isEndpointEqual = pushSubscription.endpoint === tokenDetails.endpoint;\r\n    var isAuthEqual = isArrayBufferEqual(pushSubscription.getKey('auth'), tokenDetails.auth);\r\n    var isP256dhEqual = isArrayBufferEqual(pushSubscription.getKey('p256dh'), tokenDetails.p256dh);\r\n    return isEndpointEqual && isAuthEqual && isP256dhEqual;\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 FCM_MSG = 'FCM_MSG';\r\nvar SWController = /** @class */ (function (_super) {\r\n    __extends(SWController, _super);\r\n    function SWController(app) {\r\n        var _this = _super.call(this, app) || this;\r\n        _this.bgMessageHandler = null;\r\n        self.addEventListener('push', function (e) {\r\n            _this.onPush(e);\r\n        });\r\n        self.addEventListener('pushsubscriptionchange', function (e) {\r\n            _this.onSubChange(e);\r\n        });\r\n        self.addEventListener('notificationclick', function (e) {\r\n            _this.onNotificationClick(e);\r\n        });\r\n        return _this;\r\n    }\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.onPush = function (event) {\r\n        event.waitUntil(this.onPush_(event));\r\n    };\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.onSubChange = function (event) {\r\n        event.waitUntil(this.onSubChange_(event));\r\n    };\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.onNotificationClick = function (event) {\r\n        event.waitUntil(this.onNotificationClick_(event));\r\n    };\r\n    /**\r\n     * A handler for push events that shows notifications based on the content of\r\n     * the payload.\r\n     *\r\n     * The payload must be a JSON-encoded Object with a `notification` key. The\r\n     * value of the `notification` property will be used as the NotificationOptions\r\n     * object passed to showNotification. Additionally, the `title` property of the\r\n     * notification object will be used as the title.\r\n     *\r\n     * If there is no notification data in the payload then no notification will be\r\n     * shown.\r\n     */\r\n    SWController.prototype.onPush_ = function (event) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var msgPayload, hasVisibleClients, notificationDetails, notificationTitle, reg;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        if (!event.data) {\r\n                            return [2 /*return*/];\r\n                        }\r\n                        try {\r\n                            msgPayload = event.data.json();\r\n                        }\r\n                        catch (err) {\r\n                            // Not JSON so not an FCM message\r\n                            return [2 /*return*/];\r\n                        }\r\n                        return [4 /*yield*/, this.hasVisibleClients_()];\r\n                    case 1:\r\n                        hasVisibleClients = _a.sent();\r\n                        if (hasVisibleClients) {\r\n                            // Do not need to show a notification.\r\n                            if (msgPayload.notification || this.bgMessageHandler) {\r\n                                // Send to page\r\n                                return [2 /*return*/, this.sendMessageToWindowClients_(msgPayload)];\r\n                            }\r\n                            return [2 /*return*/];\r\n                        }\r\n                        notificationDetails = this.getNotificationData_(msgPayload);\r\n                        if (!notificationDetails) return [3 /*break*/, 3];\r\n                        notificationTitle = notificationDetails.title || '';\r\n                        return [4 /*yield*/, this.getSWRegistration_()];\r\n                    case 2:\r\n                        reg = _a.sent();\r\n                        return [2 /*return*/, reg.showNotification(notificationTitle, notificationDetails)];\r\n                    case 3:\r\n                        if (!this.bgMessageHandler) return [3 /*break*/, 5];\r\n                        return [4 /*yield*/, this.bgMessageHandler(msgPayload)];\r\n                    case 4:\r\n                        _a.sent();\r\n                        return [2 /*return*/];\r\n                    case 5: return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    SWController.prototype.onSubChange_ = function (event) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var registration, err_1, err_2, tokenDetailsModel, tokenDetails;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        _a.trys.push([0, 2, , 3]);\r\n                        return [4 /*yield*/, this.getSWRegistration_()];\r\n                    case 1:\r\n                        registration = _a.sent();\r\n                        return [3 /*break*/, 3];\r\n                    case 2:\r\n                        err_1 = _a.sent();\r\n                        throw errorFactory.create(ERROR_CODES.UNABLE_TO_RESUBSCRIBE, {\r\n                            message: err_1\r\n                        });\r\n                    case 3:\r\n                        _a.trys.push([3, 5, , 8]);\r\n                        return [4 /*yield*/, registration.pushManager.getSubscription()];\r\n                    case 4:\r\n                        _a.sent();\r\n                        return [3 /*break*/, 8];\r\n                    case 5:\r\n                        err_2 = _a.sent();\r\n                        tokenDetailsModel = this.getTokenDetailsModel();\r\n                        return [4 /*yield*/, tokenDetailsModel.getTokenDetailsFromSWScope(registration.scope)];\r\n                    case 6:\r\n                        tokenDetails = _a.sent();\r\n                        if (!tokenDetails) {\r\n                            // This should rarely occure, but could if indexedDB\r\n                            // is corrupted or wiped\r\n                            throw err_2;\r\n                        }\r\n                        // Attempt to delete the token if we know it's bad\r\n                        return [4 /*yield*/, this.deleteToken(tokenDetails.fcmToken)];\r\n                    case 7:\r\n                        // Attempt to delete the token if we know it's bad\r\n                        _a.sent();\r\n                        throw err_2;\r\n                    case 8: return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    SWController.prototype.onNotificationClick_ = function (event) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var msgPayload, clickAction, windowClient, internalMsg;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        if (!event.notification ||\r\n                            !event.notification.data ||\r\n                            !event.notification.data[FCM_MSG]) {\r\n                            // Not an FCM notification, do nothing.\r\n                            return [2 /*return*/];\r\n                        }\r\n                        // Prevent other listeners from receiving the event\r\n                        event.stopImmediatePropagation();\r\n                        event.notification.close();\r\n                        msgPayload = event.notification.data[FCM_MSG];\r\n                        if (!msgPayload.notification) {\r\n                            // Nothing to do.\r\n                            return [2 /*return*/];\r\n                        }\r\n                        clickAction = msgPayload.notification.click_action;\r\n                        if (!clickAction) {\r\n                            // Nothing to do.\r\n                            return [2 /*return*/];\r\n                        }\r\n                        return [4 /*yield*/, this.getWindowClient_(clickAction)];\r\n                    case 1:\r\n                        windowClient = _a.sent();\r\n                        if (!!windowClient) return [3 /*break*/, 3];\r\n                        return [4 /*yield*/, self.clients.openWindow(clickAction)];\r\n                    case 2:\r\n                        // Unable to find window client so need to open one.\r\n                        windowClient = _a.sent();\r\n                        return [3 /*break*/, 5];\r\n                    case 3: return [4 /*yield*/, windowClient.focus()];\r\n                    case 4:\r\n                        windowClient = _a.sent();\r\n                        _a.label = 5;\r\n                    case 5:\r\n                        if (!windowClient) {\r\n                            // Window Client will not be returned if it's for a third party origin.\r\n                            return [2 /*return*/];\r\n                        }\r\n                        // Delete notification data from payload before sending to the page.\r\n                        delete msgPayload.notification;\r\n                        internalMsg = createNewMsg(MessageType.NOTIFICATION_CLICKED, msgPayload);\r\n                        // Attempt to send a message to the client to handle the data\r\n                        // Is affected by: https://github.com/slightlyoff/ServiceWorker/issues/728\r\n                        return [2 /*return*/, this.attemptToMessageClient_(windowClient, internalMsg)];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.getNotificationData_ = function (msgPayload) {\r\n        if (!msgPayload) {\r\n            return;\r\n        }\r\n        if (typeof msgPayload.notification !== 'object') {\r\n            return;\r\n        }\r\n        var notificationInformation = __assign({}, msgPayload.notification);\r\n        // Put the message payload under FCM_MSG name so we can identify the\r\n        // notification as being an FCM notification vs a notification from\r\n        // somewhere else (i.e. normal web push or developer generated\r\n        // notification).\r\n        notificationInformation.data = (_a = {}, _a[FCM_MSG] = msgPayload, _a);\r\n        return notificationInformation;\r\n        var _a;\r\n    };\r\n    /**\r\n     * Calling setBackgroundMessageHandler will opt in to some specific\r\n     * behaviours.\r\n     * 1.) If a notification doesn't need to be shown due to a window already\r\n     * being visible, then push messages will be sent to the page.\r\n     * 2.) If a notification needs to be shown, and the message contains no\r\n     * notification data this method will be called\r\n     * and the promise it returns will be passed to event.waitUntil.\r\n     * If you do not set this callback then all push messages will let and the\r\n     * developer can handle them in a their own 'push' event callback\r\n     *\r\n     * @param callback The callback to be called when a push message is received\r\n     * and a notification must be shown. The callback will be given the data from\r\n     * the push message.\r\n     */\r\n    SWController.prototype.setBackgroundMessageHandler = function (callback) {\r\n        if (!callback || typeof callback !== 'function') {\r\n            throw errorFactory.create(ERROR_CODES.BG_HANDLER_FUNCTION_EXPECTED);\r\n        }\r\n        this.bgMessageHandler = callback;\r\n    };\r\n    /**\r\n     * @param url The URL to look for when focusing a client.\r\n     * @return Returns an existing window client or a newly opened WindowClient.\r\n     */\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.getWindowClient_ = function (url) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var parsedURL, clientList, suitableClient, i, parsedClientUrl;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0:\r\n                        parsedURL = new URL(url, self.location.href).href;\r\n                        return [4 /*yield*/, getClientList()];\r\n                    case 1:\r\n                        clientList = _a.sent();\r\n                        suitableClient = null;\r\n                        for (i = 0; i < clientList.length; i++) {\r\n                            parsedClientUrl = new URL(clientList[i].url, self.location.href)\r\n                                .href;\r\n                            if (parsedClientUrl === parsedURL) {\r\n                                suitableClient = clientList[i];\r\n                                break;\r\n                            }\r\n                        }\r\n                        return [2 /*return*/, suitableClient];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This message will attempt to send the message to a window client.\r\n     * @param client The WindowClient to send the message to.\r\n     * @param message The message to send to the client.\r\n     * @returns Returns a promise that resolves after sending the message. This\r\n     * does not guarantee that the message was successfully received.\r\n     */\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.attemptToMessageClient_ = function (client, message) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            return __generator(this, function (_a) {\r\n                // NOTE: This returns a promise in case this API is abstracted later on to\r\n                // do additional work\r\n                if (!client) {\r\n                    throw errorFactory.create(ERROR_CODES.NO_WINDOW_CLIENT_TO_MSG);\r\n                }\r\n                client.postMessage(message);\r\n                return [2 /*return*/];\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * @returns If there is currently a visible WindowClient, this method will\r\n     * resolve to true, otherwise false.\r\n     */\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.hasVisibleClients_ = function () {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var clientList;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, getClientList()];\r\n                    case 1:\r\n                        clientList = _a.sent();\r\n                        return [2 /*return*/, clientList.some(function (client) { return client.visibilityState === 'visible'; })];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * @param msgPayload The data from the push event that should be sent to all\r\n     * available pages.\r\n     * @returns Returns a promise that resolves once the message has been sent to\r\n     * all WindowClients.\r\n     */\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    SWController.prototype.sendMessageToWindowClients_ = function (msgPayload) {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var _this = this;\r\n            var clientList, internalMsg;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, getClientList()];\r\n                    case 1:\r\n                        clientList = _a.sent();\r\n                        internalMsg = createNewMsg(MessageType.PUSH_MSG_RECEIVED, msgPayload);\r\n                        return [4 /*yield*/, Promise.all(clientList.map(function (client) {\r\n                                return _this.attemptToMessageClient_(client, internalMsg);\r\n                            }))];\r\n                    case 2:\r\n                        _a.sent();\r\n                        return [2 /*return*/];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This will register the default service worker and return the registration.\r\n     * @return he service worker registration to be used for the push service.\r\n     */\r\n    SWController.prototype.getSWRegistration_ = function () {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            return __generator(this, function (_a) {\r\n                return [2 /*return*/, self.registration];\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This will return the default VAPID key or the uint8array version of the\r\n     * public VAPID key provided by the developer.\r\n     */\r\n    SWController.prototype.getPublicVapidKey_ = function () {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            var swReg, vapidKeyFromDatabase;\r\n            return __generator(this, function (_a) {\r\n                switch (_a.label) {\r\n                    case 0: return [4 /*yield*/, this.getSWRegistration_()];\r\n                    case 1:\r\n                        swReg = _a.sent();\r\n                        if (!swReg) {\r\n                            throw errorFactory.create(ERROR_CODES.SW_REGISTRATION_EXPECTED);\r\n                        }\r\n                        return [4 /*yield*/, this.getVapidDetailsModel().getVapidFromSWScope(swReg.scope)];\r\n                    case 2:\r\n                        vapidKeyFromDatabase = _a.sent();\r\n                        if (vapidKeyFromDatabase == null) {\r\n                            return [2 /*return*/, DEFAULT_PUBLIC_VAPID_KEY];\r\n                        }\r\n                        return [2 /*return*/, vapidKeyFromDatabase];\r\n                }\r\n            });\r\n        });\r\n    };\r\n    return SWController;\r\n}(ControllerInterface));\r\nfunction getClientList() {\r\n    return self.clients.matchAll({\r\n        type: 'window',\r\n        includeUncontrolled: true\r\n        // TS doesn't know that \"type: 'window'\" means it'll return WindowClient[]\r\n    });\r\n}\r\nfunction createNewMsg(msgType, msgData) {\r\n    return _a = {}, _a[MessageParameter.TYPE_OF_MSG] = msgType, _a[MessageParameter.DATA] = msgData, _a;\r\n    var _a;\r\n}\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 DEFAULT_SW_PATH = '/firebase-messaging-sw.js';\r\nvar DEFAULT_SW_SCOPE = '/firebase-cloud-messaging-push-scope';\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 WindowController = /** @class */ (function (_super) {\r\n    __extends(WindowController, _super);\r\n    /**\r\n     * A service that provides a MessagingService instance.\r\n     */\r\n    function WindowController(app) {\r\n        var _this = _super.call(this, app) || this;\r\n        _this.registrationToUse = null;\r\n        _this.publicVapidKeyToUse = null;\r\n        _this.manifestCheckPromise = null;\r\n        _this.messageObserver = null;\r\n        // @ts-ignore: Unused variable error, this is not implemented yet.\r\n        _this.tokenRefreshObserver = null;\r\n        _this.onMessageInternal = createSubscribe(function (observer) {\r\n            _this.messageObserver = observer;\r\n        });\r\n        _this.onTokenRefreshInternal = createSubscribe(function (observer) {\r\n            _this.tokenRefreshObserver = observer;\r\n        });\r\n        _this.setupSWMessageListener_();\r\n        return _this;\r\n    }\r\n    /**\r\n     * This method returns an FCM token if it can be generated.\r\n     * The return promise will reject if the browser doesn't support\r\n     * FCM, if permission is denied for notifications or it's not\r\n     * possible to generate a token.\r\n     *\r\n     * @return Returns a promise that resolves to an FCM token or null if\r\n     * permission isn't granted.\r\n     */\r\n    WindowController.prototype.getToken = function () {\r\n        var _this = this;\r\n        // Check that the required API's are available\r\n        if (!this.isSupported_()) {\r\n            return Promise.reject(errorFactory.create(ERROR_CODES.UNSUPPORTED_BROWSER));\r\n        }\r\n        return this.manifestCheck_().then(function () {\r\n            return _super.prototype.getToken.call(_this);\r\n        });\r\n    };\r\n    /**\r\n     * The method checks that a manifest is defined and has the correct GCM\r\n     * sender ID.\r\n     * @return Returns a promise that resolves if the manifest matches\r\n     * our required sender ID\r\n     */\r\n    // Visible for testing\r\n    // TODO: make private\r\n    WindowController.prototype.manifestCheck_ = function () {\r\n        if (this.manifestCheckPromise) {\r\n            return this.manifestCheckPromise;\r\n        }\r\n        var manifestTag = document.querySelector('link[rel=\"manifest\"]');\r\n        if (!manifestTag) {\r\n            this.manifestCheckPromise = Promise.resolve();\r\n        }\r\n        else {\r\n            this.manifestCheckPromise = fetch(manifestTag.href)\r\n                .then(function (response) {\r\n                return response.json();\r\n            })\r\n                .catch(function () {\r\n                // If the download or parsing fails allow check.\r\n                // We only want to error if we KNOW that the gcm_sender_id is incorrect.\r\n            })\r\n                .then(function (manifestContent) {\r\n                if (!manifestContent) {\r\n                    return;\r\n                }\r\n                if (!manifestContent['gcm_sender_id']) {\r\n                    return;\r\n                }\r\n                if (manifestContent['gcm_sender_id'] !== '103953800507') {\r\n                    throw errorFactory.create(ERROR_CODES.INCORRECT_GCM_SENDER_ID);\r\n                }\r\n            });\r\n        }\r\n        return this.manifestCheckPromise;\r\n    };\r\n    /**\r\n     * Request permission if it is not currently granted\r\n     *\r\n     * @return Resolves if the permission was granted, otherwise rejects\r\n     */\r\n    WindowController.prototype.requestPermission = function () {\r\n        return __awaiter(this, void 0, void 0, function () {\r\n            return __generator(this, function (_a) {\r\n                if (\r\n                // TODO: Remove the cast when this issue is fixed:\r\n                // https://github.com/Microsoft/TypeScript/issues/14701\r\n                // tslint:disable-next-line no-any\r\n                Notification.permission === 'granted') {\r\n                    return [2 /*return*/];\r\n                }\r\n                return [2 /*return*/, new Promise(function (resolve, reject) {\r\n                        var managePermissionResult = function (result) {\r\n                            if (result === 'granted') {\r\n                                return resolve();\r\n                            }\r\n                            else if (result === 'denied') {\r\n                                return reject(errorFactory.create(ERROR_CODES.PERMISSION_BLOCKED));\r\n                            }\r\n                            else {\r\n                                return reject(errorFactory.create(ERROR_CODES.PERMISSION_DEFAULT));\r\n                            }\r\n                        };\r\n                        // The Notification.requestPermission API was changed to\r\n                        // return a promise so now have to handle both in case\r\n                        // browsers stop support callbacks for promised version\r\n                        var permissionPromise = Notification.requestPermission(managePermissionResult);\r\n                        if (permissionPromise) {\r\n                            // Prefer the promise version as it's the future API.\r\n                            permissionPromise.then(managePermissionResult);\r\n                        }\r\n                    })];\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This method allows a developer to override the default service worker and\r\n     * instead use a custom service worker.\r\n     *\r\n     * @param registration The service worker registration that should be used to\r\n     * receive the push messages.\r\n     */\r\n    WindowController.prototype.useServiceWorker = function (registration) {\r\n        if (!(registration instanceof ServiceWorkerRegistration)) {\r\n            throw errorFactory.create(ERROR_CODES.SW_REGISTRATION_EXPECTED);\r\n        }\r\n        if (this.registrationToUse != null) {\r\n            throw errorFactory.create(ERROR_CODES.USE_SW_BEFORE_GET_TOKEN);\r\n        }\r\n        this.registrationToUse = registration;\r\n    };\r\n    /**\r\n     * This method allows a developer to override the default vapid key\r\n     * and instead use a custom VAPID public key.\r\n     *\r\n     * @param publicKey A URL safe base64 encoded string.\r\n     */\r\n    WindowController.prototype.usePublicVapidKey = function (publicKey) {\r\n        if (typeof publicKey !== 'string') {\r\n            throw errorFactory.create(ERROR_CODES.INVALID_PUBLIC_VAPID_KEY);\r\n        }\r\n        if (this.publicVapidKeyToUse != null) {\r\n            throw errorFactory.create(ERROR_CODES.USE_PUBLIC_KEY_BEFORE_GET_TOKEN);\r\n        }\r\n        var parsedKey = base64ToArrayBuffer(publicKey);\r\n        if (parsedKey.length !== 65) {\r\n            throw errorFactory.create(ERROR_CODES.PUBLIC_KEY_DECRYPTION_FAILED);\r\n        }\r\n        this.publicVapidKeyToUse = parsedKey;\r\n    };\r\n    /**\r\n     * @export\r\n     * @param nextOrObserver An observer object or a function triggered on\r\n     * message.\r\n     * @param error A function triggered on message error.\r\n     * @param completed function triggered when the observer is removed.\r\n     * @return The unsubscribe function for the observer.\r\n     */\r\n    WindowController.prototype.onMessage = function (nextOrObserver, error, completed) {\r\n        if (typeof nextOrObserver === 'function') {\r\n            return this.onMessageInternal(nextOrObserver, error, completed);\r\n        }\r\n        else {\r\n            return this.onMessageInternal(nextOrObserver);\r\n        }\r\n    };\r\n    /**\r\n     * @param nextOrObserver An observer object or a function triggered on token\r\n     * refresh.\r\n     * @param error A function triggered on token refresh error.\r\n     * @param completed function triggered when the observer is removed.\r\n     * @return The unsubscribe function for the observer.\r\n     */\r\n    WindowController.prototype.onTokenRefresh = function (nextOrObserver, error, completed) {\r\n        if (typeof nextOrObserver === 'function') {\r\n            return this.onTokenRefreshInternal(nextOrObserver, error, completed);\r\n        }\r\n        else {\r\n            return this.onTokenRefreshInternal(nextOrObserver);\r\n        }\r\n    };\r\n    /**\r\n     * Given a registration, wait for the service worker it relates to\r\n     * become activer\r\n     * @param registration Registration to wait for service worker to become active\r\n     * @return Wait for service worker registration to become active\r\n     */\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    WindowController.prototype.waitForRegistrationToActivate_ = function (registration) {\r\n        var serviceWorker = registration.installing || registration.waiting || registration.active;\r\n        return new Promise(function (resolve, reject) {\r\n            if (!serviceWorker) {\r\n                // This is a rare scenario but has occured in firefox\r\n                reject(errorFactory.create(ERROR_CODES.NO_SW_IN_REG));\r\n                return;\r\n            }\r\n            // Because the Promise function is called on next tick there is a\r\n            // small chance that the worker became active or redundant already.\r\n            if (serviceWorker.state === 'activated') {\r\n                resolve(registration);\r\n                return;\r\n            }\r\n            if (serviceWorker.state === 'redundant') {\r\n                reject(errorFactory.create(ERROR_CODES.SW_REG_REDUNDANT));\r\n                return;\r\n            }\r\n            var stateChangeListener = function () {\r\n                if (serviceWorker.state === 'activated') {\r\n                    resolve(registration);\r\n                }\r\n                else if (serviceWorker.state === 'redundant') {\r\n                    reject(errorFactory.create(ERROR_CODES.SW_REG_REDUNDANT));\r\n                }\r\n                else {\r\n                    // Return early and wait to next state change\r\n                    return;\r\n                }\r\n                serviceWorker.removeEventListener('statechange', stateChangeListener);\r\n            };\r\n            serviceWorker.addEventListener('statechange', stateChangeListener);\r\n        });\r\n    };\r\n    /**\r\n     * This will register the default service worker and return the registration\r\n     * @return The service worker registration to be used for the push service.\r\n     */\r\n    WindowController.prototype.getSWRegistration_ = function () {\r\n        var _this = this;\r\n        if (this.registrationToUse) {\r\n            return this.waitForRegistrationToActivate_(this.registrationToUse);\r\n        }\r\n        // Make the registration null so we know useServiceWorker will not\r\n        // use a new service worker as registrationToUse is no longer undefined\r\n        this.registrationToUse = null;\r\n        return navigator.serviceWorker\r\n            .register(DEFAULT_SW_PATH, {\r\n            scope: DEFAULT_SW_SCOPE\r\n        })\r\n            .catch(function (err) {\r\n            throw errorFactory.create(ERROR_CODES.FAILED_DEFAULT_REGISTRATION, {\r\n                browserErrorMessage: err.message\r\n            });\r\n        })\r\n            .then(function (registration) {\r\n            return _this.waitForRegistrationToActivate_(registration).then(function () {\r\n                _this.registrationToUse = registration;\r\n                // We update after activation due to an issue with Firefox v49 where\r\n                // a race condition occassionally causes the service work to not\r\n                // install\r\n                registration.update();\r\n                return registration;\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * This will return the default VAPID key or the uint8array version of the public VAPID key\r\n     * provided by the developer.\r\n     */\r\n    WindowController.prototype.getPublicVapidKey_ = function () {\r\n        if (this.publicVapidKeyToUse) {\r\n            return Promise.resolve(this.publicVapidKeyToUse);\r\n        }\r\n        return Promise.resolve(DEFAULT_PUBLIC_VAPID_KEY);\r\n    };\r\n    /**\r\n     * This method will set up a message listener to handle\r\n     * events from the service worker that should trigger\r\n     * events in the page.\r\n     */\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    WindowController.prototype.setupSWMessageListener_ = function () {\r\n        var _this = this;\r\n        if (!('serviceWorker' in navigator)) {\r\n            return;\r\n        }\r\n        navigator.serviceWorker.addEventListener('message', function (event) {\r\n            if (!event.data || !event.data[MessageParameter.TYPE_OF_MSG]) {\r\n                // Not a message from FCM\r\n                return;\r\n            }\r\n            var workerPageMessage = event.data;\r\n            switch (workerPageMessage[MessageParameter.TYPE_OF_MSG]) {\r\n                case MessageType.PUSH_MSG_RECEIVED:\r\n                case MessageType.NOTIFICATION_CLICKED:\r\n                    var pushMessage = workerPageMessage[MessageParameter.DATA];\r\n                    if (_this.messageObserver) {\r\n                        _this.messageObserver.next(pushMessage);\r\n                    }\r\n                    break;\r\n                default:\r\n                    // Noop.\r\n                    break;\r\n            }\r\n        }, false);\r\n    };\r\n    /**\r\n     * Checks to see if the required API's are valid or not.\r\n     * @return Returns true if the desired APIs are available.\r\n     */\r\n    // Visible for testing\r\n    // TODO: Make private\r\n    WindowController.prototype.isSupported_ = function () {\r\n        return ('serviceWorker' in navigator &&\r\n            'PushManager' in window &&\r\n            'Notification' in window &&\r\n            'fetch' in window &&\r\n            ServiceWorkerRegistration.prototype.hasOwnProperty('showNotification') &&\r\n            PushSubscription.prototype.hasOwnProperty('getKey'));\r\n    };\r\n    return WindowController;\r\n}(ControllerInterface));\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 registerMessaging(instance) {\r\n    var messagingName = 'messaging';\r\n    var factoryMethod = function (app) {\r\n        if (self && 'ServiceWorkerGlobalScope' in self) {\r\n            return new SWController(app);\r\n        }\r\n        // Assume we are in the window context.\r\n        return new WindowController(app);\r\n    };\r\n    var namespaceExports = {\r\n        // no-inline\r\n        Messaging: WindowController\r\n    };\r\n    instance.INTERNAL.registerService(messagingName, factoryMethod, namespaceExports);\r\n}\r\nregisterMessaging(firebase);\n\nexport { registerMessaging };\n","import firebase from '@firebase/app';\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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$$1, reject$$1) {\r\n            _this.xhr_.addEventListener('abort', function (event) {\r\n                _this.errorCode_ = ErrorCode.ABORT;\r\n                resolve$$1(_this);\r\n            });\r\n            _this.xhr_.addEventListener('error', function (event) {\r\n                _this.errorCode_ = ErrorCode.NETWORK_ERROR;\r\n                resolve$$1(_this);\r\n            });\r\n            _this.xhr_.addEventListener('load', function (event) {\r\n                resolve$$1(_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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    /**\r\n     * Transforms a comma-separated string of tokens into a list of download\r\n     * URLs.\r\n     */\r\n    function xformTokens(metadata, tokens) {\r\n        var valid = isString(tokens) && tokens.length > 0;\r\n        if (!valid) {\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 [];\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;\r\n    }\r\n    mappings.push(new Mapping('downloadTokens', 'downloadURLs', false, xformTokens));\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 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 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 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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    Object.defineProperty(UploadTaskSnapshot.prototype, \"downloadURL\", {\r\n        get: function () {\r\n            if (this.metadata !== null) {\r\n                var urls = this.metadata['downloadURLs'];\r\n                if (urls != null && urls[0] != null) {\r\n                    return urls[0];\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        enumerable: true,\r\n        configurable: true\r\n    });\r\n    return UploadTaskSnapshot;\r\n}());\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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$$1, reject$$1) {\r\n            _this.resolve_ = resolve$$1;\r\n            _this.reject_ = reject$$1;\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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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        return this.getMetadata().then(function (metadata) {\r\n            var url = metadata['downloadURLs'][0];\r\n            if (isDef(url)) {\r\n                return url;\r\n            }\r\n            else {\r\n                throw noDownloadURL();\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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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$$1, reject$$1) {\r\n            self.resolve_ = resolve$$1;\r\n            self.reject_ = reject$$1;\r\n            self.start_();\r\n        });\r\n    }\r\n    /**\r\n     * Actually starts the retry loop.\r\n     */\r\n    NetworkRequest.prototype.start_ = function () {\r\n        var self = this;\r\n        function doTheRequest(backoffCallback, canceled$$1) {\r\n            if (canceled$$1) {\r\n                backoffCallback(false, new RequestEndStatus(false, null, true));\r\n                return;\r\n            }\r\n            var xhr = self.pool_.createXhrIo();\r\n            self.pendingXhr_ = xhr;\r\n            function progressListener(progressEvent) {\r\n                var loaded = progressEvent.loaded;\r\n                var total = progressEvent.lengthComputable ? progressEvent.total : -1;\r\n                if (self.progressCallback_ !== null) {\r\n                    self.progressCallback_(loaded, total);\r\n                }\r\n            }\r\n            if (self.progressCallback_ !== null) {\r\n                xhr.addUploadProgressListener(progressListener);\r\n            }\r\n            xhr\r\n                .send(self.url_, self.method_, self.body_, self.headers_)\r\n                .then(function (xhr) {\r\n                if (self.progressCallback_ !== null) {\r\n                    xhr.removeUploadProgressListener(progressListener);\r\n                }\r\n                self.pendingXhr_ = null;\r\n                xhr = xhr;\r\n                var hitServer = xhr.getErrorCode() === ErrorCode.NO_ERROR;\r\n                var status = xhr.getStatus();\r\n                if (!hitServer || self.isRetryStatusCode_(status)) {\r\n                    var wasCanceled = xhr.getErrorCode() === ErrorCode.ABORT;\r\n                    backoffCallback(false, new RequestEndStatus(false, null, wasCanceled));\r\n                    return;\r\n                }\r\n                var successCode = contains$1(self.successCodes_, status);\r\n                backoffCallback(true, new RequestEndStatus(successCode, xhr));\r\n            });\r\n        }\r\n        /**\r\n         * @param requestWentThrough True if the request eventually went\r\n         *     through, false if it hit the retry limit or was canceled.\r\n         */\r\n        function backoffDone(requestWentThrough, status) {\r\n            var resolve$$1 = self.resolve_;\r\n            var reject$$1 = self.reject_;\r\n            var xhr = status.xhr;\r\n            if (status.wasSuccessCode) {\r\n                try {\r\n                    var result = self.callback_(xhr, xhr.getResponseText());\r\n                    if (isJustDef(result)) {\r\n                        resolve$$1(result);\r\n                    }\r\n                    else {\r\n                        resolve$$1();\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    reject$$1(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$$1(self.errorCallback_(xhr, err));\r\n                    }\r\n                    else {\r\n                        reject$$1(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$$1(err);\r\n                    }\r\n                    else {\r\n                        var err = retryLimitExceeded();\r\n                        reject$$1(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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 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 * Copyright 2017 Google Inc.\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 */\n\nvar firebase = require('./app');\nrequire('./auth');\nrequire('./database');\nrequire('./messaging');\nrequire('./storage');\n\nmodule.exports = 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