{"version":3,"file":"index.esm.js","sources":["../../database/interfaces.ts","../../database/fromRef.ts","../../node_modules/tslib/tslib.es6.js","../../database/utils.ts","../../database/object/index.ts","../../database/list/index.ts","../../database/list/audit-trail.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nvar _a;\nimport { onChildAdded, onChildChanged, onChildMoved, onChildRemoved, onValue } from 'firebase/database';\nexport var ListenEvent;\n(function (ListenEvent) {\n    ListenEvent[\"added\"] = \"child_added\";\n    ListenEvent[\"removed\"] = \"child_removed\";\n    ListenEvent[\"changed\"] = \"child_changed\";\n    ListenEvent[\"moved\"] = \"child_moved\";\n    ListenEvent[\"value\"] = \"value\";\n})(ListenEvent || (ListenEvent = {}));\nexport var ListenerMethods = Object.freeze((_a = {},\n    _a[ListenEvent.added] = onChildAdded,\n    _a[ListenEvent.removed] = onChildRemoved,\n    _a[ListenEvent.changed] = onChildChanged,\n    _a[ListenEvent.moved] = onChildMoved,\n    _a[ListenEvent.value] = onValue,\n    _a));\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { Observable } from 'rxjs';\nimport { delay } from 'rxjs/operators';\nimport { ListenerMethods } from './interfaces';\nimport { off } from 'firebase/database';\n/**\n * Create an observable from a Database Reference or Database Query.\n * @param ref Database Reference\n * @param event Listen event type ('value', 'added', 'changed', 'removed', 'moved')\n */\nexport function fromRef(ref, event) {\n    return new Observable(function (subscriber) {\n        var fn = ListenerMethods[event](ref, function (snapshot, prevKey) {\n            subscriber.next({ snapshot: snapshot, prevKey: prevKey, event: event });\n        }, subscriber.error.bind(subscriber));\n        return {\n            unsubscribe: function () {\n                off(ref, event, fn);\n            },\n        };\n    }).pipe(\n    // Ensures subscribe on observable is async. This handles\n    // a quirk in the SDK where on/once callbacks can happen\n    // synchronously.\n    delay(0));\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n    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 (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n    return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n    if (typeof b !== \"function\" && b !== null)\r\n        throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\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 = function() {\r\n    __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    return __assign.apply(this, arguments);\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++) {\r\n            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n                t[p[i]] = s[p[i]];\r\n        }\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 __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n    function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n    var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n    var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n    var _, done = false;\r\n    for (var i = decorators.length - 1; i >= 0; i--) {\r\n        var context = {};\r\n        for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n        for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n        context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n        var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n        if (kind === \"accessor\") {\r\n            if (result === void 0) continue;\r\n            if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n            if (_ = accept(result.get)) descriptor.get = _;\r\n            if (_ = accept(result.set)) descriptor.set = _;\r\n            if (_ = accept(result.init)) initializers.unshift(_);\r\n        }\r\n        else if (_ = accept(result)) {\r\n            if (kind === \"field\") initializers.unshift(_);\r\n            else descriptor[key] = _;\r\n        }\r\n    }\r\n    if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n    done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n    var useValue = arguments.length > 2;\r\n    for (var i = 0; i < initializers.length; i++) {\r\n        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n    }\r\n    return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n    return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n    if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n    return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\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    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\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) : adopt(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 (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, 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 var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    var desc = Object.getOwnPropertyDescriptor(m, k);\r\n    if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n        desc = { enumerable: true, get: function() { return m[k]; } };\r\n    }\r\n    Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n    for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n    var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n    if (m) return m.call(o);\r\n    if (o && typeof o.length === \"number\") 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    throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\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\n/** @deprecated */\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\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n            r[k] = a[j];\r\n    return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n        if (ar || !(i in from)) {\r\n            if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n            ar[i] = from[i];\r\n        }\r\n    }\r\n    return to.concat(ar || Array.prototype.slice.call(from));\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) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\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], i;\r\n    return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\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\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n    o[\"default\"] = v;\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 (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n    __setModuleDefault(result, 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\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n    if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n    if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n    return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n    if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n    if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n    if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n    return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n    if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n    return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n    if (value !== null && value !== void 0) {\r\n        if (typeof value !== \"object\") throw new TypeError(\"Object expected.\");\r\n        var dispose;\r\n        if (async) {\r\n            if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n            dispose = value[Symbol.asyncDispose];\r\n        }\r\n        if (dispose === void 0) {\r\n            if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n            dispose = value[Symbol.dispose];\r\n        }\r\n        if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n        env.stack.push({ value: value, dispose: dispose, async: async });\r\n    }\r\n    else if (async) {\r\n        env.stack.push({ async: true });\r\n    }\r\n    return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n    var e = new Error(message);\r\n    return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n    function fail(e) {\r\n        env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n        env.hasError = true;\r\n    }\r\n    function next() {\r\n        while (env.stack.length) {\r\n            var rec = env.stack.pop();\r\n            try {\r\n                var result = rec.dispose && rec.dispose.call(rec.value);\r\n                if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n            }\r\n            catch (e) {\r\n                fail(e);\r\n            }\r\n        }\r\n        if (env.hasError) throw env.error;\r\n    }\r\n    return next();\r\n}\r\n\r\nexport default {\r\n    __extends,\r\n    __assign,\r\n    __rest,\r\n    __decorate,\r\n    __param,\r\n    __metadata,\r\n    __awaiter,\r\n    __generator,\r\n    __createBinding,\r\n    __exportStar,\r\n    __values,\r\n    __read,\r\n    __spread,\r\n    __spreadArrays,\r\n    __spreadArray,\r\n    __await,\r\n    __asyncGenerator,\r\n    __asyncDelegator,\r\n    __asyncValues,\r\n    __makeTemplateObject,\r\n    __importStar,\r\n    __importDefault,\r\n    __classPrivateFieldGet,\r\n    __classPrivateFieldSet,\r\n    __classPrivateFieldIn,\r\n    __addDisposableResource,\r\n    __disposeResources,\r\n};\r\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { ListenEvent } from './interfaces';\n/**\n * Check the length of the provided array. If it is empty return an array\n * that is populated with all the Realtime Database child events.\n * @param events\n */\nexport function validateEventsArray(events) {\n    if (events == null || events.length === 0) {\n        events = [\n            ListenEvent.added,\n            ListenEvent.removed,\n            ListenEvent.changed,\n            ListenEvent.moved,\n        ];\n    }\n    return events;\n}\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { __assign } from \"tslib\";\nimport { ListenEvent } from '../interfaces';\nimport { fromRef } from '../fromRef';\nimport { map } from 'rxjs/operators';\n/**\n * Get the snapshot changes of an object\n * @param query\n */\nexport function object(query) {\n    return fromRef(query, ListenEvent.value);\n}\n/**\n * Get an array of object values, optionally with a mapped key\n * @param query object ref or query\n * @param keyField map the object key to a specific field\n */\nexport function objectVal(query, options) {\n    if (options === void 0) { options = {}; }\n    return fromRef(query, ListenEvent.value).pipe(map(function (change) { return changeToData(change, options); }));\n}\nexport function changeToData(change, options) {\n    var _a;\n    if (options === void 0) { options = {}; }\n    var val = change.snapshot.val();\n    // match the behavior of the JS SDK when the snapshot doesn't exist\n    if (!change.snapshot.exists()) {\n        return val;\n    }\n    // val can be a primitive type\n    if (typeof val !== 'object') {\n        return val;\n    }\n    return __assign(__assign({}, val), (options.keyField ? (_a = {}, _a[options.keyField] = change.snapshot.key, _a) : null));\n}\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { __spreadArray } from \"tslib\";\nimport { ListenEvent } from '../interfaces';\nimport { of, merge, from } from 'rxjs';\nimport { validateEventsArray } from '../utils';\nimport { fromRef } from '../fromRef';\nimport { switchMap, scan, distinctUntilChanged, map } from 'rxjs/operators';\nimport { changeToData } from '../object';\nimport { get as databaseGet } from 'firebase/database';\nexport function stateChanges(query, options) {\n    if (options === void 0) { options = {}; }\n    var events = validateEventsArray(options.events);\n    var childEvent$ = events.map(function (event) { return fromRef(query, event); });\n    return merge.apply(void 0, childEvent$);\n}\nfunction get(query) {\n    return from(databaseGet(query)).pipe(map(function (snapshot) {\n        var event = ListenEvent.value;\n        return { snapshot: snapshot, prevKey: null, event: event };\n    }));\n}\nexport function list(query, options) {\n    if (options === void 0) { options = {}; }\n    var events = validateEventsArray(options.events);\n    return get(query).pipe(switchMap(function (change) {\n        var childEvent$ = [of(change)];\n        events.forEach(function (event) {\n            childEvent$.push(fromRef(query, event));\n        });\n        return merge.apply(void 0, childEvent$).pipe(scan(buildView, []));\n    }), distinctUntilChanged());\n}\n/**\n * Get an object mapped to its value, and optionally its key\n * @param query object ref or query\n * @param keyField map the object key to a specific field\n */\nexport function listVal(query, options) {\n    if (options === void 0) { options = {}; }\n    return list(query).pipe(map(function (arr) {\n        return arr.map(function (change) { return changeToData(change, options); });\n    }));\n}\nfunction positionFor(changes, key) {\n    var len = changes.length;\n    for (var i = 0; i < len; i++) {\n        if (changes[i].snapshot.key === key) {\n            return i;\n        }\n    }\n    return -1;\n}\nfunction positionAfter(changes, prevKey) {\n    if (prevKey == null) {\n        return 0;\n    }\n    else {\n        var i = positionFor(changes, prevKey);\n        if (i === -1) {\n            return changes.length;\n        }\n        else {\n            return i + 1;\n        }\n    }\n}\nfunction buildView(current, change) {\n    var snapshot = change.snapshot, prevKey = change.prevKey, event = change.event;\n    var key = snapshot.key;\n    var currentKeyPosition = positionFor(current, key);\n    var afterPreviousKeyPosition = positionAfter(current, prevKey || undefined);\n    switch (event) {\n        case ListenEvent.value:\n            if (change.snapshot && change.snapshot.exists()) {\n                var prevKey_1 = null;\n                change.snapshot.forEach(function (snapshot) {\n                    var action = {\n                        snapshot: snapshot,\n                        event: ListenEvent.value,\n                        prevKey: prevKey_1,\n                    };\n                    prevKey_1 = snapshot.key;\n                    current = __spreadArray(__spreadArray([], current, true), [action], false);\n                    return false;\n                });\n            }\n            return current;\n        case ListenEvent.added:\n            if (currentKeyPosition > -1) {\n                // check that the previouskey is what we expect, else reorder\n                var previous = current[currentKeyPosition - 1];\n                if (((previous && previous.snapshot.key) || null) !== prevKey) {\n                    current = current.filter(function (x) { return x.snapshot.key !== snapshot.key; });\n                    current.splice(afterPreviousKeyPosition, 0, change);\n                }\n            }\n            else if (prevKey == null) {\n                return __spreadArray([change], current, true);\n            }\n            else {\n                current = current.slice();\n                current.splice(afterPreviousKeyPosition, 0, change);\n            }\n            return current;\n        case ListenEvent.removed:\n            return current.filter(function (x) { return x.snapshot.key !== snapshot.key; });\n        case ListenEvent.changed:\n            return current.map(function (x) { return (x.snapshot.key === key ? change : x); });\n        case ListenEvent.moved:\n            if (currentKeyPosition > -1) {\n                var data = current.splice(currentKeyPosition, 1)[0];\n                current = current.slice();\n                current.splice(afterPreviousKeyPosition, 0, data);\n                return current;\n            }\n            return current;\n        // default will also remove null results\n        default:\n            return current;\n    }\n}\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { __spreadArray } from \"tslib\";\nimport { ListenEvent } from '../interfaces';\nimport { fromRef } from '../fromRef';\nimport { map, withLatestFrom, scan, skipWhile } from 'rxjs/operators';\nimport { stateChanges } from './index';\nexport function auditTrail(query, options) {\n    if (options === void 0) { options = {}; }\n    var auditTrail$ = stateChanges(query, options).pipe(scan(function (current, changes) { return __spreadArray(__spreadArray([], current, true), [changes], false); }, []));\n    return waitForLoaded(query, auditTrail$);\n}\nfunction loadedData(query) {\n    // Create an observable of loaded values to retrieve the\n    // known dataset. This will allow us to know what key to\n    // emit the \"whole\" array at when listening for child events.\n    return fromRef(query, ListenEvent.value).pipe(map(function (data) {\n        // Store the last key in the data set\n        var lastKeyToLoad;\n        // Loop through loaded dataset to find the last key\n        data.snapshot.forEach(function (child) {\n            lastKeyToLoad = child.key;\n            return false;\n        });\n        // return data set and the current last key loaded\n        return { data: data, lastKeyToLoad: lastKeyToLoad };\n    }));\n}\nfunction waitForLoaded(query, snap$) {\n    var loaded$ = loadedData(query);\n    return loaded$.pipe(withLatestFrom(snap$), \n    // Get the latest values from the \"loaded\" and \"child\" datasets\n    // We can use both datasets to form an array of the latest values.\n    map(function (_a) {\n        var loaded = _a[0], changes = _a[1];\n        // Store the last key in the data set\n        var lastKeyToLoad = loaded.lastKeyToLoad;\n        // Store all child keys loaded at this point\n        var loadedKeys = changes.map(function (change) { return change.snapshot.key; });\n        return { changes: changes, lastKeyToLoad: lastKeyToLoad, loadedKeys: loadedKeys };\n    }), \n    // This is the magical part, only emit when the last load key\n    // in the dataset has been loaded by a child event. At this point\n    // we can assume the dataset is \"whole\".\n    skipWhile(function (meta) {\n        return meta.loadedKeys.indexOf(meta.lastKeyToLoad) === -1;\n    }), \n    // Pluck off the meta data because the user only cares\n    // to iterate through the snapshots\n    map(function (meta) { return meta.changes; 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