{"version":3,"file":"firebase-database.js","sources":["../../node_modules/tslib/tslib.es6.js","../util/dist/index.esm.js","../logger/dist/index.esm.js","../database/dist/index.esm.js"],"sourcesContent":["/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation. All rights reserved.\r\nLicensed under the Apache License, Version 2.0 (the \"License\"); you may not use\r\nthis file except in compliance with the License. You may obtain a copy of the\r\nLicense at http://www.apache.org/licenses/LICENSE-2.0\r\n\r\nTHIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\r\nKIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED\r\nWARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,\r\nMERCHANTABLITY OR NON-INFRINGEMENT.\r\n\r\nSee the Apache Version 2.0 License for specific language governing permissions\r\nand limitations under the License.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\r\n\r\nexport function __extends(d, b) {\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)\r\n t[p[i]] = s[p[i]];\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (_) try {\r\n if (f = 1, y && (t = y[op[0] & 2 ? \"return\" : op[0] ? \"throw\" : \"next\"]) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [0, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport function __exportStar(m, exports) {\r\n for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];\r\n}\r\n\r\nexport function __values(o) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator], i = 0;\r\n if (m) return m.call(o);\r\n return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { if (o[n]) i[n] = function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; }; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator];\r\n return m ? m.call(o) : typeof __values === \"function\" ? __values(o) : o[Symbol.iterator]();\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\r\n result.default = mod;\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n","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} 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|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} 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 try {\r\n // In case of IE11, stack will be set only after error is raised.\r\n // https://docs.microsoft.com/en-us/scripting/javascript/reference/stack-property-error-javascript\r\n throw Error.apply(this, arguments);\r\n }\r\n catch (err) {\r\n this.name = ERROR_NAME;\r\n // Make non-enumerable getter for the property.\r\n Object.defineProperty(this, 'stack', {\r\n get: function () {\r\n return err.stack;\r\n }\r\n });\r\n }\r\n }\r\n }\r\n return FirebaseError;\r\n}());\r\n// Back-door inheritance\r\nFirebaseError.prototype = Object.create(Error.prototype);\r\nFirebaseError.prototype.constructor = FirebaseError;\r\nFirebaseError.prototype.name = ERROR_NAME;\r\nvar ErrorFactory = /** @class */ (function () {\r\n function ErrorFactory(service, serviceName, errors) {\r\n this.service = service;\r\n this.serviceName = serviceName;\r\n this.errors = errors;\r\n // Matches {$name}, by default.\r\n this.pattern = /\\{\\$([^}]+)}/g;\r\n // empty\r\n }\r\n ErrorFactory.prototype.create = function (code, data) {\r\n if (data === undefined) {\r\n data = {};\r\n }\r\n var template = this.errors[code];\r\n var fullCode = this.service + '/' + code;\r\n var message;\r\n if (template === undefined) {\r\n message = 'Error';\r\n }\r\n else {\r\n message = template.replace(this.pattern, function (match, key) {\r\n var value = data[key];\r\n return value !== undefined ? value.toString() : '<' + key + '?>';\r\n });\r\n }\r\n // Service: Error message (service/code).\r\n message = this.serviceName + ': ' + message + ' (' + fullCode + ').';\r\n var err = new FirebaseError(fullCode, message);\r\n // Populate the Error object with message parts for programmatic\r\n // accesses (e.g., e.file).\r\n for (var prop in data) {\r\n if (!data.hasOwnProperty(prop) || prop.slice(-1) === '_') {\r\n continue;\r\n }\r\n err[prop] = data[prop];\r\n }\r\n return err;\r\n };\r\n return ErrorFactory;\r\n}());\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 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.} 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.} 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}\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}\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}\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}\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|!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","/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A container for all of the Logger instances\r\n */\r\nvar instances = [];\r\n/**\r\n * The JS SDK supports 5 log levels and also allows a user the ability to\r\n * silence the logs altogether.\r\n *\r\n * The order is a follows:\r\n * DEBUG < VERBOSE < INFO < WARN < ERROR\r\n *\r\n * All of the log types above the current log level will be captured (i.e. if\r\n * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and\r\n * `VERBOSE` logs will not)\r\n */\r\nvar LogLevel;\r\n(function (LogLevel) {\r\n LogLevel[LogLevel[\"DEBUG\"] = 0] = \"DEBUG\";\r\n LogLevel[LogLevel[\"VERBOSE\"] = 1] = \"VERBOSE\";\r\n LogLevel[LogLevel[\"INFO\"] = 2] = \"INFO\";\r\n LogLevel[LogLevel[\"WARN\"] = 3] = \"WARN\";\r\n LogLevel[LogLevel[\"ERROR\"] = 4] = \"ERROR\";\r\n LogLevel[LogLevel[\"SILENT\"] = 5] = \"SILENT\";\r\n})(LogLevel || (LogLevel = {}));\r\n/**\r\n * The default log level\r\n */\r\nvar defaultLogLevel = LogLevel.INFO;\r\n/**\r\n * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR\r\n * messages on to their corresponding console counterparts (if the log method\r\n * is supported by the current log level)\r\n */\r\nvar defaultLogHandler = function (instance, logType) {\r\n var args = [];\r\n for (var _i = 2; _i < arguments.length; _i++) {\r\n args[_i - 2] = arguments[_i];\r\n }\r\n if (logType < instance.logLevel)\r\n return;\r\n var now = new Date().toISOString();\r\n switch (logType) {\r\n /**\r\n * By default, `console.debug` is not displayed in the developer console (in\r\n * chrome). To avoid forcing users to have to opt-in to these logs twice\r\n * (i.e. once for firebase, and once in the console), we are sending `DEBUG`\r\n * logs to the `console.log` function.\r\n */\r\n case LogLevel.DEBUG:\r\n console.log.apply(console, [\"[\" + now + \"] \" + instance.name + \":\"].concat(args));\r\n break;\r\n case LogLevel.VERBOSE:\r\n console.log.apply(console, [\"[\" + now + \"] \" + instance.name + \":\"].concat(args));\r\n break;\r\n case LogLevel.INFO:\r\n console.info.apply(console, [\"[\" + now + \"] \" + instance.name + \":\"].concat(args));\r\n break;\r\n case LogLevel.WARN:\r\n console.warn.apply(console, [\"[\" + now + \"] \" + instance.name + \":\"].concat(args));\r\n break;\r\n case LogLevel.ERROR:\r\n console.error.apply(console, [\"[\" + now + \"] \" + instance.name + \":\"].concat(args));\r\n break;\r\n default:\r\n throw new Error(\"Attempted to log a message with an invalid logType (value: \" + logType + \")\");\r\n }\r\n};\r\nvar Logger = /** @class */ (function () {\r\n /**\r\n * Gives you an instance of a Logger to capture messages according to\r\n * Firebase's logging scheme.\r\n *\r\n * @param name The name that the logs will be associated with\r\n */\r\n function Logger(name) {\r\n this.name = name;\r\n /**\r\n * The log level of the given Logger instance.\r\n */\r\n this._logLevel = defaultLogLevel;\r\n /**\r\n * The log handler for the Logger instance.\r\n */\r\n this._logHandler = defaultLogHandler;\r\n /**\r\n * Capture the current instance for later use\r\n */\r\n instances.push(this);\r\n }\r\n Object.defineProperty(Logger.prototype, \"logLevel\", {\r\n get: function () {\r\n return this._logLevel;\r\n },\r\n set: function (val) {\r\n if (!(val in LogLevel)) {\r\n throw new TypeError('Invalid value assigned to `logLevel`');\r\n }\r\n this._logLevel = val;\r\n },\r\n enumerable: true,\r\n configurable: true\r\n });\r\n Object.defineProperty(Logger.prototype, \"logHandler\", {\r\n get: function () {\r\n return this._logHandler;\r\n },\r\n set: function (val) {\r\n if (typeof val !== 'function') {\r\n throw new TypeError('Value assigned to `logHandler` must be a function');\r\n }\r\n this._logHandler = val;\r\n },\r\n enumerable: true,\r\n configurable: true\r\n });\r\n /**\r\n * The functions below are all based on the `console` interface\r\n */\r\n Logger.prototype.debug = function () {\r\n var args = [];\r\n for (var _i = 0; _i < arguments.length; _i++) {\r\n args[_i] = arguments[_i];\r\n }\r\n this._logHandler.apply(this, [this, LogLevel.DEBUG].concat(args));\r\n };\r\n Logger.prototype.log = function () {\r\n var args = [];\r\n for (var _i = 0; _i < arguments.length; _i++) {\r\n args[_i] = arguments[_i];\r\n }\r\n this._logHandler.apply(this, [this, LogLevel.VERBOSE].concat(args));\r\n };\r\n Logger.prototype.info = function () {\r\n var args = [];\r\n for (var _i = 0; _i < arguments.length; _i++) {\r\n args[_i] = arguments[_i];\r\n }\r\n this._logHandler.apply(this, [this, LogLevel.INFO].concat(args));\r\n };\r\n Logger.prototype.warn = function () {\r\n var args = [];\r\n for (var _i = 0; _i < arguments.length; _i++) {\r\n args[_i] = arguments[_i];\r\n }\r\n this._logHandler.apply(this, [this, LogLevel.WARN].concat(args));\r\n };\r\n Logger.prototype.error = function () {\r\n var args = [];\r\n for (var _i = 0; _i < arguments.length; _i++) {\r\n args[_i] = arguments[_i];\r\n }\r\n this._logHandler.apply(this, [this, LogLevel.ERROR].concat(args));\r\n };\r\n return Logger;\r\n}());\n\n/**\r\n * Copyright 2017 Google Inc.\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction setLogLevel(level) {\r\n instances.forEach(function (inst) {\r\n inst.logLevel = level;\r\n });\r\n}\n\nexport { setLogLevel, Logger, LogLevel };\n","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.} 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.} 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}\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} */\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 .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://.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$$1 +\r\n ' contains \".value\" child ' +\r\n path.toErrorString() +\r\n ' in addition to actual children.');\r\n }\r\n }\r\n};\r\n/**\r\n * Pre-validate paths passed in the firebase function.\r\n *\r\n * @param {string} errorPrefix\r\n * @param {Array} mergePaths\r\n */\r\nvar validateFirebaseMergePaths = function (errorPrefix$$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.}\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.}\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.} 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.} 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.} 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.} 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.}\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.>} indexes\r\n * @param {Object.} 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.}\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.} 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.} 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.} 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.} 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.}\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.} 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.} 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.} 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} 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.>}\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.>=} 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.} obj\r\n * @return {!ImmutableTree.}\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.} 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.} 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.} 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.):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.):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.}\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.} 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.}\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.} 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.} 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.} 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.} 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.} 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} 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.} changes\r\n * @param {!Node} eventCache\r\n * @param {!Array.} eventRegistrations\r\n * @return {!Array.}\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.} events\r\n * @param {!string} eventType\r\n * @param {!Array.} changes\r\n * @param {!Array.} 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.} 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.}\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.}\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.} changes\r\n * @param {!Node} eventCache\r\n * @param {EventRegistration=} eventRegistration\r\n * @return {!Array.}\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.}\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.}\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.} 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., events:!Array.}} 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.}\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.} 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.} 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 not 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.} 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.} 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.}\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.} 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.=} 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.}\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.} 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.=} 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.}\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.}\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.} 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.} changedChildren\r\n * @param {!number} writeId\r\n * @return {!Array.} 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.} 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.} 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.} changedChildren\r\n * @return {!Array.} 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.} 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.} 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.} changedChildren\r\n * @param {!number} tag\r\n * @return {!Array.} 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.} 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.} 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.} 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., events: !Array.}}\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.=} 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.} subtree\r\n * @return {!Array.}\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.} 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.} 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.}\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.}\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.} syncPointTree\r\n * @param {?Node} serverCache\r\n * @param {!WriteTreeRef} writesCache\r\n * @return {!Array.}\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.} syncPointTree\r\n * @param {?Node} serverCache\r\n * @param {!WriteTreeRef} writesCache\r\n * @return {!Array.}\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}\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.}\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.} 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.} 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.} 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.}\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.} 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.}\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.}\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.}\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 = '';\r\n }\r\n var iframeContents = '' + script + '';\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////\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.}\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. .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.} 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., 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.}\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.} 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.} 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.} 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.)} 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.)} 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.)} 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.)} 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.} 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.>}\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.=} 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.>=} 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.} 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.} 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.>} 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.>} transactionNode\r\n * @return {Array.} 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.>} node\r\n * @param {Array.} 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.>} 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.>} 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.>}\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} */\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 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