bundle.js

(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var firebaseApp_1 = require("./src/firebaseApp");
exports.firebase = firebaseApp_1.createFirebaseNamespace();
exports.default = exports.firebase;




},{"./src/firebaseApp":2}],2:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var contains = function (obj, key) {
    return Object.prototype.hasOwnProperty.call(obj, key);
};
var DEFAULT_ENTRY_NAME = '[DEFAULT]';
// An array to capture listeners before the true auth functions
// exist
var tokenListeners = [];
/**
 * Global context object for a collection of services using
 * a shared authentication state.
 */
var FirebaseAppImpl = /** @class */ (function () {
    function FirebaseAppImpl(options, name, firebase_) {
        this.firebase_ = firebase_;
        this.isDeleted_ = false;
        this.services_ = {};
        this.name_ = name;
        this.options_ = util_1.deepCopy(options);
        this.INTERNAL = {
            getUid: function () { return null; },
            getToken: function () { return Promise.resolve(null); },
            addAuthTokenListener: function (callback) {
                tokenListeners.push(callback);
                // Make sure callback is called, asynchronously, in the absence of the auth module
                setTimeout(function () { return callback(null); }, 0);
            },
            removeAuthTokenListener: function (callback) {
                tokenListeners = tokenListeners.filter(function (listener) { return listener !== callback; });
            }
        };
    }
    Object.defineProperty(FirebaseAppImpl.prototype, "name", {
        get: function () {
            this.checkDestroyed_();
            return this.name_;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(FirebaseAppImpl.prototype, "options", {
        get: function () {
            this.checkDestroyed_();
            return this.options_;
        },
        enumerable: true,
        configurable: true
    });
    FirebaseAppImpl.prototype.delete = function () {
        var _this = this;
        return new Promise(function (resolve) {
            _this.checkDestroyed_();
            resolve();
        })
            .then(function () {
            _this.firebase_.INTERNAL.removeApp(_this.name_);
            var services = [];
            Object.keys(_this.services_).forEach(function (serviceKey) {
                Object.keys(_this.services_[serviceKey]).forEach(function (instanceKey) {
                    services.push(_this.services_[serviceKey][instanceKey]);
                });
            });
            return Promise.all(services.map(function (service) {
                return service.INTERNAL.delete();
            }));
        })
            .then(function () {
            _this.isDeleted_ = true;
            _this.services_ = {};
        });
    };
    /**
     * Return a service instance associated with this app (creating it
     * on demand), identified by the passed instanceIdentifier.
     *
     * NOTE: Currently storage is the only one that is leveraging this
     * functionality. They invoke it by calling:
     *
     * ```javascript
     * firebase.app().storage('STORAGE BUCKET ID')
     * ```
     *
     * The service name is passed to this already
     * @internal
     */
    FirebaseAppImpl.prototype._getService = function (name, instanceIdentifier) {
        if (instanceIdentifier === void 0) { instanceIdentifier = DEFAULT_ENTRY_NAME; }
        this.checkDestroyed_();
        if (!this.services_[name]) {
            this.services_[name] = {};
        }
        if (!this.services_[name][instanceIdentifier]) {
            /**
             * If a custom instance has been defined (i.e. not '[DEFAULT]')
             * then we will pass that instance on, otherwise we pass `null`
             */
            var instanceSpecifier = instanceIdentifier !== DEFAULT_ENTRY_NAME
                ? instanceIdentifier
                : undefined;
            var service = this.firebase_.INTERNAL.factories[name](this, this.extendApp.bind(this), instanceSpecifier);
            this.services_[name][instanceIdentifier] = service;
        }
        return this.services_[name][instanceIdentifier];
    };
    /**
     * Callback function used to extend an App instance at the time
     * of service instance creation.
     */
    FirebaseAppImpl.prototype.extendApp = function (props) {
        var _this = this;
        // Copy the object onto the FirebaseAppImpl prototype
        util_1.deepExtend(this, props);
        /**
         * If the app has overwritten the addAuthTokenListener stub, forward
         * the active token listeners on to the true fxn.
         *
         * TODO: This function is required due to our current module
         * structure. Once we are able to rely strictly upon a single module
         * implementation, this code should be refactored and Auth should
         * provide these stubs and the upgrade logic
         */
        if (props.INTERNAL && props.INTERNAL.addAuthTokenListener) {
            tokenListeners.forEach(function (listener) {
                _this.INTERNAL.addAuthTokenListener(listener);
            });
            tokenListeners = [];
        }
    };
    /**
     * This function will throw an Error if the App has already been deleted -
     * use before performing API actions on the App.
     */
    FirebaseAppImpl.prototype.checkDestroyed_ = function () {
        if (this.isDeleted_) {
            error('app-deleted', { name: this.name_ });
        }
    };
    return FirebaseAppImpl;
}());
// Prevent dead-code elimination of these methods w/o invalid property
// copying.
(FirebaseAppImpl.prototype.name && FirebaseAppImpl.prototype.options) ||
    FirebaseAppImpl.prototype.delete ||
    console.log('dc');
/**
 * Return a firebase namespace object.
 *
 * In production, this will be called exactly once and the result
 * assigned to the 'firebase' global.  It may be called multiple times
 * in unit tests.
 */
function createFirebaseNamespace() {
    var apps_ = {};
    var factories = {};
    var appHooks = {};
    // A namespace is a plain JavaScript Object.
    var namespace = {
        // Hack to prevent Babel from modifying the object returned
        // as the firebase namespace.
        __esModule: true,
        initializeApp: initializeApp,
        app: app,
        apps: null,
        Promise: Promise,
        SDK_VERSION: '4.10.1',
        INTERNAL: {
            registerService: registerService,
            createFirebaseNamespace: createFirebaseNamespace,
            extendNamespace: extendNamespace,
            createSubscribe: util_1.createSubscribe,
            ErrorFactory: util_1.ErrorFactory,
            removeApp: removeApp,
            factories: factories,
            useAsService: useAsService,
            Promise: Promise,
            deepExtend: util_1.deepExtend
        }
    };
    // Inject a circular default export to allow Babel users who were previously
    // using:
    //
    //   import firebase from 'firebase';
    //   which becomes: var firebase = require('firebase').default;
    //
    // instead of
    //
    //   import * as firebase from 'firebase';
    //   which becomes: var firebase = require('firebase');
    util_1.patchProperty(namespace, 'default', namespace);
    // firebase.apps is a read-only getter.
    Object.defineProperty(namespace, 'apps', {
        get: getApps
    });
    /**
     * Called by App.delete() - but before any services associated with the App
     * are deleted.
     */
    function removeApp(name) {
        var app = apps_[name];
        callAppHooks(app, 'delete');
        delete apps_[name];
    }
    /**
     * Get the App object for a given name (or DEFAULT).
     */
    function app(name) {
        name = name || DEFAULT_ENTRY_NAME;
        if (!contains(apps_, name)) {
            error('no-app', { name: name });
        }
        return apps_[name];
    }
    util_1.patchProperty(app, 'App', FirebaseAppImpl);
    /**
     * Create a new App instance (name must be unique).
     */
    function initializeApp(options, name) {
        if (name === undefined) {
            name = DEFAULT_ENTRY_NAME;
        }
        else {
            if (typeof name !== 'string' || name === '') {
                error('bad-app-name', { name: name + '' });
            }
        }
        if (contains(apps_, name)) {
            error('duplicate-app', { name: name });
        }
        var app = new FirebaseAppImpl(options, name, namespace);
        apps_[name] = app;
        callAppHooks(app, 'create');
        return app;
    }
    /*
     * Return an array of all the non-deleted FirebaseApps.
     */
    function getApps() {
        // Make a copy so caller cannot mutate the apps list.
        return Object.keys(apps_).map(function (name) { return apps_[name]; });
    }
    /*
     * Register a Firebase Service.
     *
     * firebase.INTERNAL.registerService()
     *
     * TODO: Implement serviceProperties.
     */
    function registerService(name, createService, serviceProperties, appHook, allowMultipleInstances) {
        // Cannot re-register a service that already exists
        if (factories[name]) {
            error('duplicate-service', { name: name });
        }
        // Capture the service factory for later service instantiation
        factories[name] = createService;
        // Capture the appHook, if passed
        if (appHook) {
            appHooks[name] = appHook;
            // Run the **new** app hook on all existing apps
            getApps().forEach(function (app) {
                appHook('create', app);
            });
        }
        // The Service namespace is an accessor function ...
        var serviceNamespace = function (appArg) {
            if (appArg === void 0) { appArg = app(); }
            if (typeof appArg[name] !== 'function') {
                // Invalid argument.
                // This happens in the following case: firebase.storage('gs:/')
                error('invalid-app-argument', { name: name });
            }
            // Forward service instance lookup to the FirebaseApp.
            return appArg[name]();
        };
        // ... and a container for service-level properties.
        if (serviceProperties !== undefined) {
            util_1.deepExtend(serviceNamespace, serviceProperties);
        }
        // Monkey-patch the serviceNamespace onto the firebase namespace
        namespace[name] = serviceNamespace;
        // Patch the FirebaseAppImpl prototype
        FirebaseAppImpl.prototype[name] = function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            var serviceFxn = this._getService.bind(this, name);
            return serviceFxn.apply(this, allowMultipleInstances ? args : []);
        };
        return serviceNamespace;
    }
    /**
     * Patch the top-level firebase namespace with additional properties.
     *
     * firebase.INTERNAL.extendNamespace()
     */
    function extendNamespace(props) {
        util_1.deepExtend(namespace, props);
    }
    function callAppHooks(app, eventName) {
        Object.keys(factories).forEach(function (serviceName) {
            // Ignore virtual services
            var factoryName = useAsService(app, serviceName);
            if (factoryName === null) {
                return;
            }
            if (appHooks[factoryName]) {
                appHooks[factoryName](eventName, app);
            }
        });
    }
    // Map the requested service to a registered service name
    // (used to map auth to serverAuth service when needed).
    function useAsService(app, name) {
        if (name === 'serverAuth') {
            return null;
        }
        var useService = name;
        var options = app.options;
        return useService;
    }
    return namespace;
}
exports.createFirebaseNamespace = createFirebaseNamespace;
function error(code, args) {
    throw appErrors.create(code, args);
}
// TypeScript does not support non-string indexes!
// let errors: {[code: AppError: string} = {
var errors = {
    'no-app': "No Firebase App '{$name}' has been created - " +
        'call Firebase App.initializeApp()',
    'bad-app-name': "Illegal App name: '{$name}",
    'duplicate-app': "Firebase App named '{$name}' already exists",
    'app-deleted': "Firebase App named '{$name}' already deleted",
    'duplicate-service': "Firebase service named '{$name}' already registered",
    'sa-not-supported': 'Initializing the Firebase SDK with a service ' +
        'account is only allowed in a Node.js environment. On client ' +
        'devices, you should instead initialize the SDK with an api key and ' +
        'auth domain',
    'invalid-app-argument': 'firebase.{$name}() takes either no argument or a ' +
        'Firebase App instance.'
};
var appErrors = new util_1.ErrorFactory('app', 'Firebase', errors);




},{"@firebase/util":92}],3:[function(require,module,exports){
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h.Ia=function(a){return T(this,this.c.Ia(a).then(function(a){return new Ge(a)}))};h.Sa=function(a){return T(this,this.c.Sa(a).then(function(){}))};h.eb=function(a,b){var c=this;return T(this,z().then(function(){return"undefined"===typeof b||Za(b)?{}:$e(new Re(b))}).then(function(b){return c.c.eb(a,b)}).then(function(){}))};h.xc=function(a,b){return T(this,ik(this,a,b,r(this.gb,this)))};function El(a,b,c,d,e,f){L(this,"type","recaptcha");this.b=this.c=null;this.m=!1;this.l=b;this.a=c||{theme:"light",type:"image"};this.g=[];if(this.a[Fl])throw new M("argument-error","sitekey should not be provided for reCAPTCHA as one is automatically provisioned for the current project.");this.h="invisible"===this.a[Gl];if(!ah(b)||!this.h&&ah(b).hasChildNodes())throw new M("argument-error","reCAPTCHA container is either not found or already contains inner elements!");this.u=new oh(a,f||null,e||null);
this.s=d||function(){return null};var g=this;this.i=[];var l=this.a[Hl];this.a[Hl]=function(a){Il(g,a);if("function"===typeof l)l(a);else if("string"===typeof l){var b=K(l,k);"function"===typeof b&&b(a)}};var n=this.a[Jl];this.a[Jl]=function(){Il(g,null);if("function"===typeof n)n();else if("string"===typeof n){var a=K(n,k);"function"===typeof a&&a()}}}var Hl="callback",Jl="expired-callback",Fl="sitekey",Gl="size";function Il(a,b){for(var c=0;c<a.i.length;c++)try{a.i[c](b)}catch(d){}}
function Kl(a,b){Ha(a.i,function(a){return a==b})}function Ll(a,b){a.g.push(b);yb(b,function(){Ga(a.g,b)});return b}h=El.prototype;
h.ya=function(){var a=this;return this.c?this.c:this.c=Ll(this,z().then(function(){if(le())return ae();throw new M("operation-not-supported-in-this-environment","RecaptchaVerifier is only supported in a browser HTTP/HTTPS environment.");}).then(function(){return Ml(Nl(),a.s())}).then(function(){return P(a.u,gi,{})}).then(function(b){a.a[Fl]=b.recaptchaSiteKey}).o(function(b){a.c=null;throw b;}))};
h.render=function(){Ol(this);var a=this;return Ll(this,this.ya().then(function(){if(null===a.b){var b=a.l;if(!a.h){var c=ah(b);b=dh("DIV");c.appendChild(b)}a.b=grecaptcha.render(b,a.a)}return a.b}))};h.verify=function(){Ol(this);var a=this;return Ll(this,this.render().then(function(b){return new y(function(c){var d=grecaptcha.getResponse(b);if(d)c(d);else{var e=function(b){b&&(Kl(a,e),c(b))};a.i.push(e);a.h&&grecaptcha.execute(a.b)}})}))};h.reset=function(){Ol(this);null!==this.b&&grecaptcha.reset(this.b)};
function Ol(a){if(a.m)throw new M("internal-error","RecaptchaVerifier instance has been destroyed.");}h.clear=function(){Ol(this);this.m=!0;Nl().b--;for(var a=0;a<this.g.length;a++)this.g[a].cancel("RecaptchaVerifier instance has been destroyed.");if(!this.h){a=ah(this.l);for(var b;b=a.firstChild;)a.removeChild(b)}};var Pl=qd("https://www.google.com/recaptcha/api.js?onload=%{onload}&render=explicit&hl=%{hl}");
function Ql(){this.b=k.grecaptcha?Infinity:0;this.c=null;this.a="__rcb"+Math.floor(1E6*Math.random()).toString()}
function Ml(a,b){return new y(function(c,d){if(se())if(!k.grecaptcha||b!==a.c&&!a.b){k[a.a]=function(){if(k.grecaptcha){a.c=b;var e=k.grecaptcha.render;k.grecaptcha.render=function(b,c){b=e(b,c);a.b++;return b};c()}else d(new M("internal-error"));delete k[a.a]};var e=ud(Pl,{onload:a.a,hl:b||""});z(gh(e)).o(function(){d(new M("internal-error","Unable to load external reCAPTCHA dependencies!"))})}else c();else d(new M("network-request-failed"))})}var Rl=null;
function Nl(){Rl||(Rl=new Ql);return Rl}function Sl(a,b,c){try{this.f=c||firebase.app()}catch(f){throw new M("argument-error","No firebase.app.App instance is currently initialized.");}if(this.f.options&&this.f.options.apiKey)c=this.f.options.apiKey;else throw new M("invalid-api-key");var d=this,e=null;try{e=this.f.auth().Ka()}catch(f){}e=firebase.SDK_VERSION?he(firebase.SDK_VERSION,e):null;El.call(this,c,a,b,function(){try{var a=d.f.auth().$()}catch(g){a=null}return a},e,ji(ki))}t(Sl,El);function Tl(a,b,c,d){a:{c=Array.prototype.slice.call(c);var e=0;for(var f=!1,g=0;g<b.length;g++)if(b[g].optional)f=!0;else{if(f)throw new M("internal-error","Argument validator encountered a required argument after an optional argument.");e++}f=b.length;if(c.length<e||f<c.length)d="Expected "+(e==f?1==e?"1 argument":e+" arguments":e+"-"+f+" arguments")+" but got "+c.length+".";else{for(e=0;e<c.length;e++)if(f=b[e].optional&&void 0===c[e],!b[e].M(c[e])&&!f){b=b[e];if(0>e||e>=Ul.length)throw new M("internal-error",
"Argument validator received an unsupported number of arguments.");c=Ul[e];d=(d?"":c+" argument ")+(b.name?'"'+b.name+'" ':"")+"must be "+b.K+".";break a}d=null}}if(d)throw new M("argument-error",a+" failed: "+d);}var Ul="First Second Third Fourth Fifth Sixth Seventh Eighth Ninth".split(" ");function V(a,b){return{name:a||"",K:"a valid string",optional:!!b,M:m}}function Vl(){return{name:"opt_forceRefresh",K:"a boolean",optional:!0,M:ba}}
function W(a,b){return{name:a||"",K:"a valid object",optional:!!b,M:q}}function Wl(a,b){return{name:a||"",K:"a function",optional:!!b,M:p}}function Xl(a,b){return{name:a||"",K:"null",optional:!!b,M:ea}}function Yl(){return{name:"",K:"an HTML element",optional:!1,M:function(a){return!!(a&&a instanceof Element)}}}function Zl(){return{name:"auth",K:"an instance of Firebase Auth",optional:!0,M:function(a){return!!(a&&a instanceof pl)}}}
function $l(){return{name:"app",K:"an instance of Firebase App",optional:!0,M:function(a){return!!(a&&a instanceof firebase.app.App)}}}function am(a){return{name:a?a+"Credential":"credential",K:a?"a valid "+a+" credential":"a valid credential",optional:!1,M:function(b){if(!b)return!1;var c=!a||b.providerId===a;return!(!b.xa||!c)}}}
function bm(){return{name:"authProvider",K:"a valid Auth provider",optional:!1,M:function(a){return!!(a&&a.providerId&&a.hasOwnProperty&&a.hasOwnProperty("isOAuthProvider"))}}}function cm(){return{name:"applicationVerifier",K:"an implementation of firebase.auth.ApplicationVerifier",optional:!1,M:function(a){return!!(a&&m(a.type)&&p(a.verify))}}}function X(a,b,c,d){return{name:c||"",K:a.K+" or "+b.K,optional:!!d,M:function(c){return a.M(c)||b.M(c)}}};function Y(a,b){for(var c in b){var d=b[c].name;a[d]=dm(d,a[c],b[c].j)}}function Z(a,b,c,d){a[b]=dm(b,c,d)}function dm(a,b,c){function d(){var a=Array.prototype.slice.call(arguments);Tl(e,c,a);return b.apply(this,a)}if(!c)return b;var e=em(a),f;for(f in b)d[f]=b[f];for(f in b.prototype)d.prototype[f]=b.prototype[f];return d}function em(a){a=a.split(".");return a[a.length-1]};Y(pl.prototype,{Sa:{name:"applyActionCode",j:[V("code")]},Ia:{name:"checkActionCode",j:[V("code")]},Ua:{name:"confirmPasswordReset",j:[V("code"),V("newPassword")]},Qb:{name:"createUserWithEmailAndPassword",j:[V("email"),V("password")]},rb:{name:"createUserAndRetrieveDataWithEmailAndPassword",j:[V("email"),V("password")]},Tb:{name:"fetchProvidersForEmail",j:[V("email")]},aa:{name:"getRedirectResult",j:[]},jc:{name:"onAuthStateChanged",j:[X(W(),Wl(),"nextOrObserver"),Wl("opt_error",!0),Wl("opt_completed",
!0)]},kc:{name:"onIdTokenChanged",j:[X(W(),Wl(),"nextOrObserver"),Wl("opt_error",!0),Wl("opt_completed",!0)]},eb:{name:"sendPasswordResetEmail",j:[V("email"),X(W("opt_actionCodeSettings",!0),Xl(null,!0),"opt_actionCodeSettings",!0)]},fb:{name:"setPersistence",j:[V("persistence")]},gb:{name:"signInAndRetrieveDataWithCredential",j:[am()]},hb:{name:"signInAnonymously",j:[]},Hb:{name:"signInAnonymouslyAndRetrieveData",j:[]},uc:{name:"signInWithCredential",j:[am()]},vc:{name:"signInWithCustomToken",j:[V("token")]},
Fb:{name:"signInAndRetrieveDataWithCustomToken",j:[V("token")]},wc:{name:"signInWithEmailAndPassword",j:[V("email"),V("password")]},Gb:{name:"signInAndRetrieveDataWithEmailAndPassword",j:[V("email"),V("password")]},xc:{name:"signInWithPhoneNumber",j:[V("phoneNumber"),cm()]},yc:{name:"signInWithPopup",j:[bm()]},zc:{name:"signInWithRedirect",j:[bm()]},ib:{name:"signOut",j:[]},toJSON:{name:"toJSON",j:[V(null,!0)]},Gc:{name:"useDeviceLanguage",j:[]},Hc:{name:"verifyPasswordResetCode",j:[V("code")]}});
(function(a,b){for(var c in b){var d=b[c].name;if(d!==c){var e=b[c].Pb;Object.defineProperty(a,d,{get:function(){return this[c]},set:function(a){Tl(d,[e],[a],!0);this[c]=a},enumerable:!0})}}})(pl.prototype,{lc:{name:"languageCode",Pb:X(V(),Xl(),"languageCode")}});pl.Persistence=$i;pl.Persistence.LOCAL="local";pl.Persistence.SESSION="session";pl.Persistence.NONE="none";
Y(vk.prototype,{"delete":{name:"delete",j:[]},F:{name:"getIdToken",j:[Vl()]},getToken:{name:"getToken",j:[Vl()]},Ya:{name:"linkAndRetrieveDataWithCredential",j:[am()]},ec:{name:"linkWithCredential",j:[am()]},fc:{name:"linkWithPhoneNumber",j:[V("phoneNumber"),cm()]},gc:{name:"linkWithPopup",j:[bm()]},hc:{name:"linkWithRedirect",j:[bm()]},$a:{name:"reauthenticateAndRetrieveDataWithCredential",j:[am()]},oc:{name:"reauthenticateWithCredential",j:[am()]},pc:{name:"reauthenticateWithPhoneNumber",j:[V("phoneNumber"),
cm()]},qc:{name:"reauthenticateWithPopup",j:[bm()]},rc:{name:"reauthenticateWithRedirect",j:[bm()]},reload:{name:"reload",j:[]},cb:{name:"sendEmailVerification",j:[X(W("opt_actionCodeSettings",!0),Xl(null,!0),"opt_actionCodeSettings",!0)]},toJSON:{name:"toJSON",j:[V(null,!0)]},Ec:{name:"unlink",j:[V("provider")]},lb:{name:"updateEmail",j:[V("email")]},mb:{name:"updatePassword",j:[V("password")]},Fc:{name:"updatePhoneNumber",j:[am("phone")]},nb:{name:"updateProfile",j:[W("profile")]}});
Y(y.prototype,{o:{name:"catch"},then:{name:"then"}});Y(hk.prototype,{confirm:{name:"confirm",j:[V("verificationCode")]}});Z(Of,"credential",function(a,b){return new Lf(a,b)},[V("email"),V("password")]);Y(Df.prototype,{ta:{name:"addScope",j:[V("scope")]},Ca:{name:"setCustomParameters",j:[W("customOAuthParameters")]}});Z(Df,"credential",Ef,[X(V(),W(),"token")]);Y(Ff.prototype,{ta:{name:"addScope",j:[V("scope")]},Ca:{name:"setCustomParameters",j:[W("customOAuthParameters")]}});
Z(Ff,"credential",Gf,[X(V(),W(),"token")]);Y(Hf.prototype,{ta:{name:"addScope",j:[V("scope")]},Ca:{name:"setCustomParameters",j:[W("customOAuthParameters")]}});Z(Hf,"credential",If,[X(V(),X(W(),Xl()),"idToken"),X(V(),Xl(),"accessToken",!0)]);Y(Jf.prototype,{Ca:{name:"setCustomParameters",j:[W("customOAuthParameters")]}});Z(Jf,"credential",Kf,[X(V(),W(),"token"),V("secret",!0)]);
Y(O.prototype,{ta:{name:"addScope",j:[V("scope")]},credential:{name:"credential",j:[X(V(),Xl(),"idToken",!0),X(V(),Xl(),"accessToken",!0)]},Ca:{name:"setCustomParameters",j:[W("customOAuthParameters")]}});Z(Tf,"credential",Vf,[V("verificationId"),V("verificationCode")]);Y(Tf.prototype,{Qa:{name:"verifyPhoneNumber",j:[V("phoneNumber"),cm()]}});Y(M.prototype,{toJSON:{name:"toJSON",j:[V(null,!0)]}});Y(cg.prototype,{toJSON:{name:"toJSON",j:[V(null,!0)]}});
Y(bg.prototype,{toJSON:{name:"toJSON",j:[V(null,!0)]}});Y(Sl.prototype,{clear:{name:"clear",j:[]},render:{name:"render",j:[]},verify:{name:"verify",j:[]}});
(function(){if("undefined"!==typeof firebase&&firebase.INTERNAL&&firebase.INTERNAL.registerService){var a={Auth:pl,Error:M};Z(a,"EmailAuthProvider",Of,[]);Z(a,"FacebookAuthProvider",Df,[]);Z(a,"GithubAuthProvider",Ff,[]);Z(a,"GoogleAuthProvider",Hf,[]);Z(a,"TwitterAuthProvider",Jf,[]);Z(a,"OAuthProvider",O,[V("providerId")]);Z(a,"PhoneAuthProvider",Tf,[Zl()]);Z(a,"RecaptchaVerifier",Sl,[X(V(),Yl(),"recaptchaContainer"),W("recaptchaParameters",!0),$l()]);firebase.INTERNAL.registerService("auth",function(a,
c){a=new pl(a);c({INTERNAL:{getUid:r(a.getUid,a),getToken:r(a.Xb,a),addAuthTokenListener:r(a.Ob,a),removeAuthTokenListener:r(a.sc,a)}});return a},a,function(a,c){if("create"===a)try{c.auth()}catch(d){}});firebase.INTERNAL.extendNamespace({User:vk})}else throw Error("Cannot find the firebase namespace; be sure to include firebase-app.js before this library.");})();
}).call(typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : typeof window !== 'undefined' ? window : {});

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"@firebase/app":1}],4:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var app_1 = require("@firebase/app");
var Database_1 = require("./src/api/Database");
exports.Database = Database_1.Database;
var Query_1 = require("./src/api/Query");
exports.Query = Query_1.Query;
var Reference_1 = require("./src/api/Reference");
exports.Reference = Reference_1.Reference;
var util_1 = require("./src/core/util/util");
exports.enableLogging = util_1.enableLogging;
var RepoManager_1 = require("./src/core/RepoManager");
var INTERNAL = require("./src/api/internal");
var TEST_ACCESS = require("./src/api/test_access");
var util_2 = require("@firebase/util");
var ServerValue = Database_1.Database.ServerValue;
exports.ServerValue = ServerValue;
function registerDatabase(instance) {
    // Register the Database Service with the 'firebase' namespace.
    var namespace = instance.INTERNAL.registerService('database', function (app, unused, url) { return RepoManager_1.RepoManager.getInstance().databaseFromApp(app, url); }, 
    // firebase.database namespace properties
    {
        Reference: Reference_1.Reference,
        Query: Query_1.Query,
        Database: Database_1.Database,
        enableLogging: util_1.enableLogging,
        INTERNAL: INTERNAL,
        ServerValue: ServerValue,
        TEST_ACCESS: TEST_ACCESS
    }, null, true);
    if (util_2.isNodeSdk()) {
        module.exports = namespace;
    }
}
exports.registerDatabase = registerDatabase;
registerDatabase(app_1.default);
var DataSnapshot_1 = require("./src/api/DataSnapshot");
exports.DataSnapshot = DataSnapshot_1.DataSnapshot;
var onDisconnect_1 = require("./src/api/onDisconnect");
exports.OnDisconnect = onDisconnect_1.OnDisconnect;



},{"./src/api/DataSnapshot":5,"./src/api/Database":6,"./src/api/Query":7,"./src/api/Reference":8,"./src/api/internal":10,"./src/api/onDisconnect":11,"./src/api/test_access":12,"./src/core/RepoManager":19,"./src/core/util/util":63,"@firebase/app":1,"@firebase/util":92}],5:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var validation_1 = require("../core/util/validation");
var Path_1 = require("../core/util/Path");
var PriorityIndex_1 = require("../core/snap/indexes/PriorityIndex");
/**
 * Class representing a firebase data snapshot.  It wraps a SnapshotNode and
 * surfaces the public methods (val, forEach, etc.) we want to expose.
 */
var DataSnapshot = /** @class */ (function () {
    /**
     * @param {!Node} node_ A SnapshotNode to wrap.
     * @param {!Reference} ref_ The ref of the location this snapshot came from.
     * @param {!Index} index_ The iteration order for this snapshot
     */
    function DataSnapshot(node_, ref_, index_) {
        this.node_ = node_;
        this.ref_ = ref_;
        this.index_ = index_;
    }
    /**
     * Retrieves the snapshot contents as JSON.  Returns null if the snapshot is
     * empty.
     *
     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.
     */
    DataSnapshot.prototype.val = function () {
        util_1.validateArgCount('DataSnapshot.val', 0, 0, arguments.length);
        return this.node_.val();
    };
    /**
     * Returns the snapshot contents as JSON, including priorities of node.  Suitable for exporting
     * the entire node contents.
     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.
     */
    DataSnapshot.prototype.exportVal = function () {
        util_1.validateArgCount('DataSnapshot.exportVal', 0, 0, arguments.length);
        return this.node_.val(true);
    };
    // Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary
    // for end-users
    DataSnapshot.prototype.toJSON = function () {
        // Optional spacer argument is unnecessary because we're depending on recursion rather than stringifying the content
        util_1.validateArgCount('DataSnapshot.toJSON', 0, 1, arguments.length);
        return this.exportVal();
    };
    /**
     * Returns whether the snapshot contains a non-null value.
     *
     * @return {boolean} Whether the snapshot contains a non-null value, or is empty.
     */
    DataSnapshot.prototype.exists = function () {
        util_1.validateArgCount('DataSnapshot.exists', 0, 0, arguments.length);
        return !this.node_.isEmpty();
    };
    /**
     * Returns a DataSnapshot of the specified child node's contents.
     *
     * @param {!string} childPathString Path to a child.
     * @return {!DataSnapshot} DataSnapshot for child node.
     */
    DataSnapshot.prototype.child = function (childPathString) {
        util_1.validateArgCount('DataSnapshot.child', 0, 1, arguments.length);
        // Ensure the childPath is a string (can be a number)
        childPathString = String(childPathString);
        validation_1.validatePathString('DataSnapshot.child', 1, childPathString, false);
        var childPath = new Path_1.Path(childPathString);
        var childRef = this.ref_.child(childPath);
        return new DataSnapshot(this.node_.getChild(childPath), childRef, PriorityIndex_1.PRIORITY_INDEX);
    };
    /**
     * Returns whether the snapshot contains a child at the specified path.
     *
     * @param {!string} childPathString Path to a child.
     * @return {boolean} Whether the child exists.
     */
    DataSnapshot.prototype.hasChild = function (childPathString) {
        util_1.validateArgCount('DataSnapshot.hasChild', 1, 1, arguments.length);
        validation_1.validatePathString('DataSnapshot.hasChild', 1, childPathString, false);
        var childPath = new Path_1.Path(childPathString);
        return !this.node_.getChild(childPath).isEmpty();
    };
    /**
     * Returns the priority of the object, or null if no priority was set.
     *
     * @return {string|number|null} The priority.
     */
    DataSnapshot.prototype.getPriority = function () {
        util_1.validateArgCount('DataSnapshot.getPriority', 0, 0, arguments.length);
        // typecast here because we never return deferred values or internal priorities (MAX_PRIORITY)
        return this.node_.getPriority().val();
    };
    /**
     * Iterates through child nodes and calls the specified action for each one.
     *
     * @param {function(!DataSnapshot)} action Callback function to be called
     * for each child.
     * @return {boolean} True if forEach was canceled by action returning true for
     * one of the child nodes.
     */
    DataSnapshot.prototype.forEach = function (action) {
        var _this = this;
        util_1.validateArgCount('DataSnapshot.forEach', 1, 1, arguments.length);
        util_1.validateCallback('DataSnapshot.forEach', 1, action, false);
        if (this.node_.isLeafNode())
            return false;
        var childrenNode = this.node_;
        // Sanitize the return value to a boolean. ChildrenNode.forEachChild has a weird return type...
        return !!childrenNode.forEachChild(this.index_, function (key, node) {
            return action(new DataSnapshot(node, _this.ref_.child(key), PriorityIndex_1.PRIORITY_INDEX));
        });
    };
    /**
     * Returns whether this DataSnapshot has children.
     * @return {boolean} True if the DataSnapshot contains 1 or more child nodes.
     */
    DataSnapshot.prototype.hasChildren = function () {
        util_1.validateArgCount('DataSnapshot.hasChildren', 0, 0, arguments.length);
        if (this.node_.isLeafNode())
            return false;
        else
            return !this.node_.isEmpty();
    };
    Object.defineProperty(DataSnapshot.prototype, "key", {
        get: function () {
            return this.ref_.getKey();
        },
        enumerable: true,
        configurable: true
    });
    /**
     * Returns the number of children for this DataSnapshot.
     * @return {number} The number of children that this DataSnapshot contains.
     */
    DataSnapshot.prototype.numChildren = function () {
        util_1.validateArgCount('DataSnapshot.numChildren', 0, 0, arguments.length);
        return this.node_.numChildren();
    };
    /**
     * @return {Reference} The Firebase reference for the location this snapshot's data came from.
     */
    DataSnapshot.prototype.getRef = function () {
        util_1.validateArgCount('DataSnapshot.ref', 0, 0, arguments.length);
        return this.ref_;
    };
    Object.defineProperty(DataSnapshot.prototype, "ref", {
        get: function () {
            return this.getRef();
        },
        enumerable: true,
        configurable: true
    });
    return DataSnapshot;
}());
exports.DataSnapshot = DataSnapshot;



},{"../core/snap/indexes/PriorityIndex":41,"../core/util/Path":57,"../core/util/validation":64,"@firebase/util":92}],6:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var util_1 = require("../core/util/util");
var parser_1 = require("../core/util/libs/parser");
var Path_1 = require("../core/util/Path");
var Reference_1 = require("./Reference");
var Repo_1 = require("../core/Repo");
var RepoManager_1 = require("../core/RepoManager");
var util_2 = require("@firebase/util");
var validation_1 = require("../core/util/validation");
/**
 * Class representing a firebase database.
 * @implements {FirebaseService}
 */
var Database = /** @class */ (function () {
    /**
     * The constructor should not be called by users of our public API.
     * @param {!Repo} repo_
     */
    function Database(repo_) {
        this.repo_ = repo_;
        if (!(repo_ instanceof Repo_1.Repo)) {
            util_1.fatal("Don't call new Database() directly - please use firebase.database().");
        }
        /** @type {Reference} */
        this.root_ = new Reference_1.Reference(repo_, Path_1.Path.Empty);
        this.INTERNAL = new DatabaseInternals(this);
    }
    Object.defineProperty(Database.prototype, "app", {
        get: function () {
            return this.repo_.app;
        },
        enumerable: true,
        configurable: true
    });
    Database.prototype.ref = function (path) {
        this.checkDeleted_('ref');
        util_2.validateArgCount('database.ref', 0, 1, arguments.length);
        if (path instanceof Reference_1.Reference) {
            return this.refFromURL(path.toString());
        }
        return path !== undefined ? this.root_.child(path) : this.root_;
    };
    /**
     * Returns a reference to the root or the path specified in url.
     * We throw a exception if the url is not in the same domain as the
     * current repo.
     * @param {string} url
     * @return {!Reference} Firebase reference.
     */
    Database.prototype.refFromURL = function (url) {
        /** @const {string} */
        var apiName = 'database.refFromURL';
        this.checkDeleted_(apiName);
        util_2.validateArgCount(apiName, 1, 1, arguments.length);
        var parsedURL = parser_1.parseRepoInfo(url);
        validation_1.validateUrl(apiName, 1, parsedURL);
        var repoInfo = parsedURL.repoInfo;
        if (repoInfo.host !== this.repo_.repoInfo_.host) {
            util_1.fatal(apiName +
                ': Host name does not match the current database: ' +
                '(found ' +
                repoInfo.host +
                ' but expected ' +
                this.repo_.repoInfo_.host +
                ')');
        }
        return this.ref(parsedURL.path.toString());
    };
    /**
     * @param {string} apiName
     */
    Database.prototype.checkDeleted_ = function (apiName) {
        if (this.repo_ === null) {
            util_1.fatal('Cannot call ' + apiName + ' on a deleted database.');
        }
    };
    // Make individual repo go offline.
    Database.prototype.goOffline = function () {
        util_2.validateArgCount('database.goOffline', 0, 0, arguments.length);
        this.checkDeleted_('goOffline');
        this.repo_.interrupt();
    };
    Database.prototype.goOnline = function () {
        util_2.validateArgCount('database.goOnline', 0, 0, arguments.length);
        this.checkDeleted_('goOnline');
        this.repo_.resume();
    };
    Database.ServerValue = {
        TIMESTAMP: {
            '.sv': 'timestamp'
        }
    };
    return Database;
}());
exports.Database = Database;
var DatabaseInternals = /** @class */ (function () {
    /** @param {!Database} database */
    function DatabaseInternals(database) {
        this.database = database;
    }
    /** @return {Promise<void>} */
    DatabaseInternals.prototype.delete = function () {
        return tslib_1.__awaiter(this, void 0, void 0, function () {
            return tslib_1.__generator(this, function (_a) {
                this.database.checkDeleted_('delete');
                RepoManager_1.RepoManager.getInstance().deleteRepo(this.database.repo_);
                this.database.repo_ = null;
                this.database.root_ = null;
                this.database.INTERNAL = null;
                this.database = null;
                return [2 /*return*/];
            });
        });
    };
    return DatabaseInternals;
}());
exports.DatabaseInternals = DatabaseInternals;



},{"../core/Repo":17,"../core/RepoManager":19,"../core/util/Path":57,"../core/util/libs/parser":62,"../core/util/util":63,"../core/util/validation":64,"./Reference":8,"@firebase/util":92,"tslib":121}],7:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var KeyIndex_1 = require("../core/snap/indexes/KeyIndex");
var PriorityIndex_1 = require("../core/snap/indexes/PriorityIndex");
var ValueIndex_1 = require("../core/snap/indexes/ValueIndex");
var PathIndex_1 = require("../core/snap/indexes/PathIndex");
var util_2 = require("../core/util/util");
var Path_1 = require("../core/util/Path");
var validation_1 = require("../core/util/validation");
var util_3 = require("@firebase/util");
var EventRegistration_1 = require("../core/view/EventRegistration");
var util_4 = require("@firebase/util");
var __referenceConstructor;
/**
 * A Query represents a filter to be applied to a firebase location.  This object purely represents the
 * query expression (and exposes our public API to build the query).  The actual query logic is in ViewBase.js.
 *
 * Since every Firebase reference is a query, Firebase inherits from this object.
 */
var Query = /** @class */ (function () {
    function Query(repo, path, queryParams_, orderByCalled_) {
        this.repo = repo;
        this.path = path;
        this.queryParams_ = queryParams_;
        this.orderByCalled_ = orderByCalled_;
    }
    Object.defineProperty(Query, "__referenceConstructor", {
        get: function () {
            util_1.assert(__referenceConstructor, 'Reference.ts has not been loaded');
            return __referenceConstructor;
        },
        set: function (val) {
            __referenceConstructor = val;
        },
        enumerable: true,
        configurable: true
    });
    /**
     * Validates start/end values for queries.
     * @param {!QueryParams} params
     * @private
     */
    Query.validateQueryEndpoints_ = function (params) {
        var startNode = null;
        var endNode = null;
        if (params.hasStart()) {
            startNode = params.getIndexStartValue();
        }
        if (params.hasEnd()) {
            endNode = params.getIndexEndValue();
        }
        if (params.getIndex() === KeyIndex_1.KEY_INDEX) {
            var tooManyArgsError = 'Query: When ordering by key, you may only pass one argument to ' +
                'startAt(), endAt(), or equalTo().';
            var wrongArgTypeError = 'Query: When ordering by key, the argument passed to startAt(), endAt(),' +
                'or equalTo() must be a string.';
            if (params.hasStart()) {
                var startName = params.getIndexStartName();
                if (startName != util_2.MIN_NAME) {
                    throw new Error(tooManyArgsError);
                }
                else if (typeof startNode !== 'string') {
                    throw new Error(wrongArgTypeError);
                }
            }
            if (params.hasEnd()) {
                var endName = params.getIndexEndName();
                if (endName != util_2.MAX_NAME) {
                    throw new Error(tooManyArgsError);
                }
                else if (typeof endNode !== 'string') {
                    throw new Error(wrongArgTypeError);
                }
            }
        }
        else if (params.getIndex() === PriorityIndex_1.PRIORITY_INDEX) {
            if ((startNode != null && !validation_1.isValidPriority(startNode)) ||
                (endNode != null && !validation_1.isValidPriority(endNode))) {
                throw new Error('Query: When ordering by priority, the first argument passed to startAt(), ' +
                    'endAt(), or equalTo() must be a valid priority value (null, a number, or a string).');
            }
        }
        else {
            util_1.assert(params.getIndex() instanceof PathIndex_1.PathIndex ||
                params.getIndex() === ValueIndex_1.VALUE_INDEX, 'unknown index type.');
            if ((startNode != null && typeof startNode === 'object') ||
                (endNode != null && typeof endNode === 'object')) {
                throw new Error('Query: First argument passed to startAt(), endAt(), or equalTo() cannot be ' +
                    'an object.');
            }
        }
    };
    /**
     * Validates that limit* has been called with the correct combination of parameters
     * @param {!QueryParams} params
     * @private
     */
    Query.validateLimit_ = function (params) {
        if (params.hasStart() &&
            params.hasEnd() &&
            params.hasLimit() &&
            !params.hasAnchoredLimit()) {
            throw new Error("Query: Can't combine startAt(), endAt(), and limit(). Use limitToFirst() or limitToLast() instead.");
        }
    };
    /**
     * Validates that no other order by call has been made
     * @param {!string} fnName
     * @private
     */
    Query.prototype.validateNoPreviousOrderByCall_ = function (fnName) {
        if (this.orderByCalled_ === true) {
            throw new Error(fnName + ": You can't combine multiple orderBy calls.");
        }
    };
    /**
     * @return {!QueryParams}
     */
    Query.prototype.getQueryParams = function () {
        return this.queryParams_;
    };
    /**
     * @return {!Reference}
     */
    Query.prototype.getRef = function () {
        util_3.validateArgCount('Query.ref', 0, 0, arguments.length);
        // This is a slight hack. We cannot goog.require('fb.api.Firebase'), since Firebase requires fb.api.Query.
        // However, we will always export 'Firebase' to the global namespace, so it's guaranteed to exist by the time this
        // method gets called.
        return new Query.__referenceConstructor(this.repo, this.path);
    };
    /**
     * @param {!string} eventType
     * @param {!function(DataSnapshot, string=)} callback
     * @param {(function(Error)|Object)=} cancelCallbackOrContext
     * @param {Object=} context
     * @return {!function(DataSnapshot, string=)}
     */
    Query.prototype.on = function (eventType, callback, cancelCallbackOrContext, context) {
        util_3.validateArgCount('Query.on', 2, 4, arguments.length);
        validation_1.validateEventType('Query.on', 1, eventType, false);
        util_3.validateCallback('Query.on', 2, callback, false);
        var ret = Query.getCancelAndContextArgs_('Query.on', cancelCallbackOrContext, context);
        if (eventType === 'value') {
            this.onValueEvent(callback, ret.cancel, ret.context);
        }
        else {
            var callbacks = {};
            callbacks[eventType] = callback;
            this.onChildEvent(callbacks, ret.cancel, ret.context);
        }
        return callback;
    };
    /**
     * @param {!function(!DataSnapshot)} callback
     * @param {?function(Error)} cancelCallback
     * @param {?Object} context
     * @protected
     */
    Query.prototype.onValueEvent = function (callback, cancelCallback, context) {
        var container = new EventRegistration_1.ValueEventRegistration(callback, cancelCallback || null, context || null);
        this.repo.addEventCallbackForQuery(this, container);
    };
    /**
     * @param {!Object.<string, !function(!DataSnapshot, ?string)>} callbacks
     * @param {?function(Error)} cancelCallback
     * @param {?Object} context
     * @protected
     */
    Query.prototype.onChildEvent = function (callbacks, cancelCallback, context) {
        var container = new EventRegistration_1.ChildEventRegistration(callbacks, cancelCallback, context);
        this.repo.addEventCallbackForQuery(this, container);
    };
    /**
     * @param {string=} eventType
     * @param {(function(!DataSnapshot, ?string=))=} callback
     * @param {Object=} context
     */
    Query.prototype.off = function (eventType, callback, context) {
        util_3.validateArgCount('Query.off', 0, 3, arguments.length);
        validation_1.validateEventType('Query.off', 1, eventType, true);
        util_3.validateCallback('Query.off', 2, callback, true);
        util_3.validateContextObject('Query.off', 3, context, true);
        var container = null;
        var callbacks = null;
        if (eventType === 'value') {
            var valueCallback = callback || null;
            container = new EventRegistration_1.ValueEventRegistration(valueCallback, null, context || null);
        }
        else if (eventType) {
            if (callback) {
                callbacks = {};
                callbacks[eventType] = callback;
            }
            container = new EventRegistration_1.ChildEventRegistration(callbacks, null, context || null);
        }
        this.repo.removeEventCallbackForQuery(this, container);
    };
    /**
     * Attaches a listener, waits for the first event, and then removes the listener
     * @param {!string} eventType
     * @param {!function(!DataSnapshot, string=)} userCallback
     * @param cancelOrContext
     * @param context
     * @return {!firebase.Promise}
     */
    Query.prototype.once = function (eventType, userCallback, cancelOrContext, context) {
        var _this = this;
        util_3.validateArgCount('Query.once', 1, 4, arguments.length);
        validation_1.validateEventType('Query.once', 1, eventType, false);
        util_3.validateCallback('Query.once', 2, userCallback, true);
        var ret = Query.getCancelAndContextArgs_('Query.once', cancelOrContext, context);
        // TODO: Implement this more efficiently (in particular, use 'get' wire protocol for 'value' event)
        // TODO: consider actually wiring the callbacks into the promise. We cannot do this without a breaking change
        // because the API currently expects callbacks will be called synchronously if the data is cached, but this is
        // against the Promise specification.
        var firstCall = true;
        var deferred = new util_4.Deferred();
        // A dummy error handler in case a user wasn't expecting promises
        deferred.promise.catch(function () { });
        var onceCallback = function (snapshot) {
            // NOTE: Even though we unsubscribe, we may get called multiple times if a single action (e.g. set() with JSON)
            // triggers multiple events (e.g. child_added or child_changed).
            if (firstCall) {
                firstCall = false;
                _this.off(eventType, onceCallback);
                if (userCallback) {
                    userCallback.bind(ret.context)(snapshot);
                }
                deferred.resolve(snapshot);
            }
        };
        this.on(eventType, onceCallback, 
        /*cancel=*/ function (err) {
            _this.off(eventType, onceCallback);
            if (ret.cancel)
                ret.cancel.bind(ret.context)(err);
            deferred.reject(err);
        });
        return deferred.promise;
    };
    /**
     * Set a limit and anchor it to the start of the window.
     * @param {!number} limit
     * @return {!Query}
     */
    Query.prototype.limitToFirst = function (limit) {
        util_3.validateArgCount('Query.limitToFirst', 1, 1, arguments.length);
        if (typeof limit !== 'number' ||
            Math.floor(limit) !== limit ||
            limit <= 0) {
            throw new Error('Query.limitToFirst: First argument must be a positive integer.');
        }
        if (this.queryParams_.hasLimit()) {
            throw new Error('Query.limitToFirst: Limit was already set (by another call to limit, ' +
                'limitToFirst, or limitToLast).');
        }
        return new Query(this.repo, this.path, this.queryParams_.limitToFirst(limit), this.orderByCalled_);
    };
    /**
     * Set a limit and anchor it to the end of the window.
     * @param {!number} limit
     * @return {!Query}
     */
    Query.prototype.limitToLast = function (limit) {
        util_3.validateArgCount('Query.limitToLast', 1, 1, arguments.length);
        if (typeof limit !== 'number' ||
            Math.floor(limit) !== limit ||
            limit <= 0) {
            throw new Error('Query.limitToLast: First argument must be a positive integer.');
        }
        if (this.queryParams_.hasLimit()) {
            throw new Error('Query.limitToLast: Limit was already set (by another call to limit, ' +
                'limitToFirst, or limitToLast).');
        }
        return new Query(this.repo, this.path, this.queryParams_.limitToLast(limit), this.orderByCalled_);
    };
    /**
     * Given a child path, return a new query ordered by the specified grandchild path.
     * @param {!string} path
     * @return {!Query}
     */
    Query.prototype.orderByChild = function (path) {
        util_3.validateArgCount('Query.orderByChild', 1, 1, arguments.length);
        if (path === '$key') {
            throw new Error('Query.orderByChild: "$key" is invalid.  Use Query.orderByKey() instead.');
        }
        else if (path === '$priority') {
            throw new Error('Query.orderByChild: "$priority" is invalid.  Use Query.orderByPriority() instead.');
        }
        else if (path === '$value') {
            throw new Error('Query.orderByChild: "$value" is invalid.  Use Query.orderByValue() instead.');
        }
        validation_1.validatePathString('Query.orderByChild', 1, path, false);
        this.validateNoPreviousOrderByCall_('Query.orderByChild');
        var parsedPath = new Path_1.Path(path);
        if (parsedPath.isEmpty()) {
            throw new Error('Query.orderByChild: cannot pass in empty path.  Use Query.orderByValue() instead.');
        }
        var index = new PathIndex_1.PathIndex(parsedPath);
        var newParams = this.queryParams_.orderBy(index);
        Query.validateQueryEndpoints_(newParams);
        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);
    };
    /**
     * Return a new query ordered by the KeyIndex
     * @return {!Query}
     */
    Query.prototype.orderByKey = function () {
        util_3.validateArgCount('Query.orderByKey', 0, 0, arguments.length);
        this.validateNoPreviousOrderByCall_('Query.orderByKey');
        var newParams = this.queryParams_.orderBy(KeyIndex_1.KEY_INDEX);
        Query.validateQueryEndpoints_(newParams);
        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);
    };
    /**
     * Return a new query ordered by the PriorityIndex
     * @return {!Query}
     */
    Query.prototype.orderByPriority = function () {
        util_3.validateArgCount('Query.orderByPriority', 0, 0, arguments.length);
        this.validateNoPreviousOrderByCall_('Query.orderByPriority');
        var newParams = this.queryParams_.orderBy(PriorityIndex_1.PRIORITY_INDEX);
        Query.validateQueryEndpoints_(newParams);
        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);
    };
    /**
     * Return a new query ordered by the ValueIndex
     * @return {!Query}
     */
    Query.prototype.orderByValue = function () {
        util_3.validateArgCount('Query.orderByValue', 0, 0, arguments.length);
        this.validateNoPreviousOrderByCall_('Query.orderByValue');
        var newParams = this.queryParams_.orderBy(ValueIndex_1.VALUE_INDEX);
        Query.validateQueryEndpoints_(newParams);
        return new Query(this.repo, this.path, newParams, /*orderByCalled=*/ true);
    };
    /**
     * @param {number|string|boolean|null} value
     * @param {?string=} name
     * @return {!Query}
     */
    Query.prototype.startAt = function (value, name) {
        if (value === void 0) { value = null; }
        util_3.validateArgCount('Query.startAt', 0, 2, arguments.length);
        validation_1.validateFirebaseDataArg('Query.startAt', 1, value, this.path, true);
        validation_1.validateKey('Query.startAt', 2, name, true);
        var newParams = this.queryParams_.startAt(value, name);
        Query.validateLimit_(newParams);
        Query.validateQueryEndpoints_(newParams);
        if (this.queryParams_.hasStart()) {
            throw new Error('Query.startAt: Starting point was already set (by another call to startAt ' +
                'or equalTo).');
        }
        // Calling with no params tells us to start at the beginning.
        if (value === undefined) {
            value = null;
            name = null;
        }
        return new Query(this.repo, this.path, newParams, this.orderByCalled_);
    };
    /**
     * @param {number|string|boolean|null} value
     * @param {?string=} name
     * @return {!Query}
     */
    Query.prototype.endAt = function (value, name) {
        if (value === void 0) { value = null; }
        util_3.validateArgCount('Query.endAt', 0, 2, arguments.length);
        validation_1.validateFirebaseDataArg('Query.endAt', 1, value, this.path, true);
        validation_1.validateKey('Query.endAt', 2, name, true);
        var newParams = this.queryParams_.endAt(value, name);
        Query.validateLimit_(newParams);
        Query.validateQueryEndpoints_(newParams);
        if (this.queryParams_.hasEnd()) {
            throw new Error('Query.endAt: Ending point was already set (by another call to endAt or ' +
                'equalTo).');
        }
        return new Query(this.repo, this.path, newParams, this.orderByCalled_);
    };
    /**
     * Load the selection of children with exactly the specified value, and, optionally,
     * the specified name.
     * @param {number|string|boolean|null} value
     * @param {string=} name
     * @return {!Query}
     */
    Query.prototype.equalTo = function (value, name) {
        util_3.validateArgCount('Query.equalTo', 1, 2, arguments.length);
        validation_1.validateFirebaseDataArg('Query.equalTo', 1, value, this.path, false);
        validation_1.validateKey('Query.equalTo', 2, name, true);
        if (this.queryParams_.hasStart()) {
            throw new Error('Query.equalTo: Starting point was already set (by another call to startAt or ' +
                'equalTo).');
        }
        if (this.queryParams_.hasEnd()) {
            throw new Error('Query.equalTo: Ending point was already set (by another call to endAt or ' +
                'equalTo).');
        }
        return this.startAt(value, name).endAt(value, name);
    };
    /**
     * @return {!string} URL for this location.
     */
    Query.prototype.toString = function () {
        util_3.validateArgCount('Query.toString', 0, 0, arguments.length);
        return this.repo.toString() + this.path.toUrlEncodedString();
    };
    // Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary
    // for end-users.
    Query.prototype.toJSON = function () {
        // An optional spacer argument is unnecessary for a string.
        util_3.validateArgCount('Query.toJSON', 0, 1, arguments.length);
        return this.toString();
    };
    /**
     * An object representation of the query parameters used by this Query.
     * @return {!Object}
     */
    Query.prototype.queryObject = function () {
        return this.queryParams_.getQueryObject();
    };
    /**
     * @return {!string}
     */
    Query.prototype.queryIdentifier = function () {
        var obj = this.queryObject();
        var id = util_2.ObjectToUniqueKey(obj);
        return id === '{}' ? 'default' : id;
    };
    /**
     * Return true if this query and the provided query are equivalent; otherwise, return false.
     * @param {Query} other
     * @return {boolean}
     */
    Query.prototype.isEqual = function (other) {
        util_3.validateArgCount('Query.isEqual', 1, 1, arguments.length);
        if (!(other instanceof Query)) {
            var error = 'Query.isEqual failed: First argument must be an instance of firebase.database.Query.';
            throw new Error(error);
        }
        var sameRepo = this.repo === other.repo;
        var samePath = this.path.equals(other.path);
        var sameQueryIdentifier = this.queryIdentifier() === other.queryIdentifier();
        return sameRepo && samePath && sameQueryIdentifier;
    };
    /**
     * Helper used by .on and .once to extract the context and or cancel arguments.
     * @param {!string} fnName The function name (on or once)
     * @param {(function(Error)|Object)=} cancelOrContext
     * @param {Object=} context
     * @return {{cancel: ?function(Error), context: ?Object}}
     * @private
     */
    Query.getCancelAndContextArgs_ = function (fnName, cancelOrContext, context) {
        var ret = { cancel: null, context: null };
        if (cancelOrContext && context) {
            ret.cancel = cancelOrContext;
            util_3.validateCallback(fnName, 3, ret.cancel, true);
            ret.context = context;
            util_3.validateContextObject(fnName, 4, ret.context, true);
        }
        else if (cancelOrContext) {
            // we have either a cancel callback or a context.
            if (typeof cancelOrContext === 'object' && cancelOrContext !== null) {
                // it's a context!
                ret.context = cancelOrContext;
            }
            else if (typeof cancelOrContext === 'function') {
                ret.cancel = cancelOrContext;
            }
            else {
                throw new Error(util_3.errorPrefix(fnName, 3, true) +
                    ' must either be a cancel callback or a context object.');
            }
        }
        return ret;
    };
    Object.defineProperty(Query.prototype, "ref", {
        get: function () {
            return this.getRef();
        },
        enumerable: true,
        configurable: true
    });
    return Query;
}());
exports.Query = Query;



},{"../core/snap/indexes/KeyIndex":39,"../core/snap/indexes/PathIndex":40,"../core/snap/indexes/PriorityIndex":41,"../core/snap/indexes/ValueIndex":42,"../core/util/Path":57,"../core/util/util":63,"../core/util/validation":64,"../core/view/EventRegistration":72,"@firebase/util":92}],8:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var onDisconnect_1 = require("./onDisconnect");
var TransactionResult_1 = require("./TransactionResult");
var util_1 = require("../core/util/util");
var NextPushId_1 = require("../core/util/NextPushId");
var Query_1 = require("./Query");
var Repo_1 = require("../core/Repo");
var Path_1 = require("../core/util/Path");
var QueryParams_1 = require("../core/view/QueryParams");
var validation_1 = require("../core/util/validation");
var util_2 = require("@firebase/util");
var util_3 = require("@firebase/util");
var SyncPoint_1 = require("../core/SyncPoint");
var Reference = /** @class */ (function (_super) {
    tslib_1.__extends(Reference, _super);
    /**
     * Call options:
     *   new Reference(Repo, Path) or
     *   new Reference(url: string, string|RepoManager)
     *
     * Externally - this is the firebase.database.Reference type.
     *
     * @param {!Repo} repo
     * @param {(!Path)} path
     * @extends {Query}
     */
    function Reference(repo, path) {
        var _this = this;
        if (!(repo instanceof Repo_1.Repo)) {
            throw new Error('new Reference() no longer supported - use app.database().');
        }
        // call Query's constructor, passing in the repo and path.
        _this = _super.call(this, repo, path, QueryParams_1.QueryParams.DEFAULT, false) || this;
        return _this;
    }
    /** @return {?string} */
    Reference.prototype.getKey = function () {
        util_2.validateArgCount('Reference.key', 0, 0, arguments.length);
        if (this.path.isEmpty())
            return null;
        else
            return this.path.getBack();
    };
    /**
     * @param {!(string|Path)} pathString
     * @return {!Reference}
     */
    Reference.prototype.child = function (pathString) {
        util_2.validateArgCount('Reference.child', 1, 1, arguments.length);
        if (typeof pathString === 'number') {
            pathString = String(pathString);
        }
        else if (!(pathString instanceof Path_1.Path)) {
            if (this.path.getFront() === null)
                validation_1.validateRootPathString('Reference.child', 1, pathString, false);
            else
                validation_1.validatePathString('Reference.child', 1, pathString, false);
        }
        return new Reference(this.repo, this.path.child(pathString));
    };
    /** @return {?Reference} */
    Reference.prototype.getParent = function () {
        util_2.validateArgCount('Reference.parent', 0, 0, arguments.length);
        var parentPath = this.path.parent();
        return parentPath === null ? null : new Reference(this.repo, parentPath);
    };
    /** @return {!Reference} */
    Reference.prototype.getRoot = function () {
        util_2.validateArgCount('Reference.root', 0, 0, arguments.length);
        var ref = this;
        while (ref.getParent() !== null) {
            ref = ref.getParent();
        }
        return ref;
    };
    /** @return {!Database} */
    Reference.prototype.databaseProp = function () {
        return this.repo.database;
    };
    /**
     * @param {*} newVal
     * @param {function(?Error)=} onComplete
     * @return {!Promise}
     */
    Reference.prototype.set = function (newVal, onComplete) {
        util_2.validateArgCount('Reference.set', 1, 2, arguments.length);
        validation_1.validateWritablePath('Reference.set', this.path);
        validation_1.validateFirebaseDataArg('Reference.set', 1, newVal, this.path, false);
        util_2.validateCallback('Reference.set', 2, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo.setWithPriority(this.path, newVal, 
        /*priority=*/ null, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {!Object} objectToMerge
     * @param {function(?Error)=} onComplete
     * @return {!Promise}
     */
    Reference.prototype.update = function (objectToMerge, onComplete) {
        util_2.validateArgCount('Reference.update', 1, 2, arguments.length);
        validation_1.validateWritablePath('Reference.update', this.path);
        if (Array.isArray(objectToMerge)) {
            var newObjectToMerge = {};
            for (var i = 0; i < objectToMerge.length; ++i) {
                newObjectToMerge['' + i] = objectToMerge[i];
            }
            objectToMerge = newObjectToMerge;
            util_1.warn('Passing an Array to Firebase.update() is deprecated. ' +
                'Use set() if you want to overwrite the existing data, or ' +
                'an Object with integer keys if you really do want to ' +
                'only update some of the children.');
        }
        validation_1.validateFirebaseMergeDataArg('Reference.update', 1, objectToMerge, this.path, false);
        util_2.validateCallback('Reference.update', 2, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo.update(this.path, objectToMerge, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {*} newVal
     * @param {string|number|null} newPriority
     * @param {function(?Error)=} onComplete
     * @return {!Promise}
     */
    Reference.prototype.setWithPriority = function (newVal, newPriority, onComplete) {
        util_2.validateArgCount('Reference.setWithPriority', 2, 3, arguments.length);
        validation_1.validateWritablePath('Reference.setWithPriority', this.path);
        validation_1.validateFirebaseDataArg('Reference.setWithPriority', 1, newVal, this.path, false);
        validation_1.validatePriority('Reference.setWithPriority', 2, newPriority, false);
        util_2.validateCallback('Reference.setWithPriority', 3, onComplete, true);
        if (this.getKey() === '.length' || this.getKey() === '.keys')
            throw 'Reference.setWithPriority failed: ' +
                this.getKey() +
                ' is a read-only object.';
        var deferred = new util_3.Deferred();
        this.repo.setWithPriority(this.path, newVal, newPriority, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {function(?Error)=} onComplete
     * @return {!Promise}
     */
    Reference.prototype.remove = function (onComplete) {
        util_2.validateArgCount('Reference.remove', 0, 1, arguments.length);
        validation_1.validateWritablePath('Reference.remove', this.path);
        util_2.validateCallback('Reference.remove', 1, onComplete, true);
        return this.set(null, onComplete);
    };
    /**
     * @param {function(*):*} transactionUpdate
     * @param {(function(?Error, boolean, ?DataSnapshot))=} onComplete
     * @param {boolean=} applyLocally
     * @return {!Promise}
     */
    Reference.prototype.transaction = function (transactionUpdate, onComplete, applyLocally) {
        util_2.validateArgCount('Reference.transaction', 1, 3, arguments.length);
        validation_1.validateWritablePath('Reference.transaction', this.path);
        util_2.validateCallback('Reference.transaction', 1, transactionUpdate, false);
        util_2.validateCallback('Reference.transaction', 2, onComplete, true);
        // NOTE: applyLocally is an internal-only option for now.  We need to decide if we want to keep it and how
        // to expose it.
        validation_1.validateBoolean('Reference.transaction', 3, applyLocally, true);
        if (this.getKey() === '.length' || this.getKey() === '.keys')
            throw 'Reference.transaction failed: ' +
                this.getKey() +
                ' is a read-only object.';
        if (applyLocally === undefined)
            applyLocally = true;
        var deferred = new util_3.Deferred();
        if (typeof onComplete === 'function') {
            deferred.promise.catch(function () { });
        }
        var promiseComplete = function (error, committed, snapshot) {
            if (error) {
                deferred.reject(error);
            }
            else {
                deferred.resolve(new TransactionResult_1.TransactionResult(committed, snapshot));
            }
            if (typeof onComplete === 'function') {
                onComplete(error, committed, snapshot);
            }
        };
        this.repo.startTransaction(this.path, transactionUpdate, promiseComplete, applyLocally);
        return deferred.promise;
    };
    /**
     * @param {string|number|null} priority
     * @param {function(?Error)=} onComplete
     * @return {!Promise}
     */
    Reference.prototype.setPriority = function (priority, onComplete) {
        util_2.validateArgCount('Reference.setPriority', 1, 2, arguments.length);
        validation_1.validateWritablePath('Reference.setPriority', this.path);
        validation_1.validatePriority('Reference.setPriority', 1, priority, false);
        util_2.validateCallback('Reference.setPriority', 2, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo.setWithPriority(this.path.child('.priority'), priority, null, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {*=} value
     * @param {function(?Error)=} onComplete
     * @return {!Reference}
     */
    Reference.prototype.push = function (value, onComplete) {
        util_2.validateArgCount('Reference.push', 0, 2, arguments.length);
        validation_1.validateWritablePath('Reference.push', this.path);
        validation_1.validateFirebaseDataArg('Reference.push', 1, value, this.path, true);
        util_2.validateCallback('Reference.push', 2, onComplete, true);
        var now = this.repo.serverTime();
        var name = NextPushId_1.nextPushId(now);
        // push() returns a ThennableReference whose promise is fulfilled with a regular Reference.
        // We use child() to create handles to two different references. The first is turned into a
        // ThennableReference below by adding then() and catch() methods and is used as the
        // return value of push(). The second remains a regular Reference and is used as the fulfilled
        // value of the first ThennableReference.
        var thennablePushRef = this.child(name);
        var pushRef = this.child(name);
        var promise;
        if (value != null) {
            promise = thennablePushRef.set(value, onComplete).then(function () { return pushRef; });
        }
        else {
            promise = Promise.resolve(pushRef);
        }
        thennablePushRef.then = promise.then.bind(promise);
        thennablePushRef.catch = promise.then.bind(promise, undefined);
        if (typeof onComplete === 'function') {
            promise.catch(function () { });
        }
        return thennablePushRef;
    };
    /**
     * @return {!OnDisconnect}
     */
    Reference.prototype.onDisconnect = function () {
        validation_1.validateWritablePath('Reference.onDisconnect', this.path);
        return new onDisconnect_1.OnDisconnect(this.repo, this.path);
    };
    Object.defineProperty(Reference.prototype, "database", {
        get: function () {
            return this.databaseProp();
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(Reference.prototype, "key", {
        get: function () {
            return this.getKey();
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(Reference.prototype, "parent", {
        get: function () {
            return this.getParent();
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(Reference.prototype, "root", {
        get: function () {
            return this.getRoot();
        },
        enumerable: true,
        configurable: true
    });
    return Reference;
}(Query_1.Query));
exports.Reference = Reference;
/**
 * Define reference constructor in various modules
 *
 * We are doing this here to avoid several circular
 * dependency issues
 */
Query_1.Query.__referenceConstructor = Reference;
SyncPoint_1.SyncPoint.__referenceConstructor = Reference;



},{"../core/Repo":17,"../core/SyncPoint":24,"../core/util/NextPushId":55,"../core/util/Path":57,"../core/util/util":63,"../core/util/validation":64,"../core/view/QueryParams":73,"./Query":7,"./TransactionResult":9,"./onDisconnect":11,"@firebase/util":92,"tslib":121}],9:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var TransactionResult = /** @class */ (function () {
    /**
     * A type for the resolve value of Firebase.transaction.
     * @constructor
     * @dict
     * @param {boolean} committed
     * @param {DataSnapshot} snapshot
     */
    function TransactionResult(committed, snapshot) {
        this.committed = committed;
        this.snapshot = snapshot;
    }
    // Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary
    // for end-users
    TransactionResult.prototype.toJSON = function () {
        util_1.validateArgCount('TransactionResult.toJSON', 0, 1, arguments.length);
        return { committed: this.committed, snapshot: this.snapshot.toJSON() };
    };
    return TransactionResult;
}());
exports.TransactionResult = TransactionResult;



},{"@firebase/util":92}],10:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var WebSocketConnection_1 = require("../realtime/WebSocketConnection");
var BrowserPollConnection_1 = require("../realtime/BrowserPollConnection");
/**
 * INTERNAL methods for internal-use only (tests, etc.).
 *
 * Customers shouldn't use these or else should be aware that they could break at any time.
 *
 * @const
 */
exports.forceLongPolling = function () {
    WebSocketConnection_1.WebSocketConnection.forceDisallow();
    BrowserPollConnection_1.BrowserPollConnection.forceAllow();
};
exports.forceWebSockets = function () {
    BrowserPollConnection_1.BrowserPollConnection.forceDisallow();
};
/* Used by App Manager */
exports.isWebSocketsAvailable = function () {
    return WebSocketConnection_1.WebSocketConnection['isAvailable']();
};
exports.setSecurityDebugCallback = function (ref, callback) {
    ref.repo.persistentConnection_.securityDebugCallback_ = callback;
};
exports.stats = function (ref, showDelta) {
    ref.repo.stats(showDelta);
};
exports.statsIncrementCounter = function (ref, metric) {
    ref.repo.statsIncrementCounter(metric);
};
exports.dataUpdateCount = function (ref) {
    return ref.repo.dataUpdateCount;
};
exports.interceptServerData = function (ref, callback) {
    return ref.repo.interceptServerData_(callback);
};



},{"../realtime/BrowserPollConnection":80,"../realtime/WebSocketConnection":84}],11:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var validation_1 = require("../core/util/validation");
var util_2 = require("../core/util/util");
var util_3 = require("@firebase/util");
/**
 * @constructor
 */
var OnDisconnect = /** @class */ (function () {
    /**
     * @param {!Repo} repo_
     * @param {!Path} path_
     */
    function OnDisconnect(repo_, path_) {
        this.repo_ = repo_;
        this.path_ = path_;
    }
    /**
     * @param {function(?Error)=} onComplete
     * @return {!firebase.Promise}
     */
    OnDisconnect.prototype.cancel = function (onComplete) {
        util_1.validateArgCount('OnDisconnect.cancel', 0, 1, arguments.length);
        util_1.validateCallback('OnDisconnect.cancel', 1, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo_.onDisconnectCancel(this.path_, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {function(?Error)=} onComplete
     * @return {!firebase.Promise}
     */
    OnDisconnect.prototype.remove = function (onComplete) {
        util_1.validateArgCount('OnDisconnect.remove', 0, 1, arguments.length);
        validation_1.validateWritablePath('OnDisconnect.remove', this.path_);
        util_1.validateCallback('OnDisconnect.remove', 1, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo_.onDisconnectSet(this.path_, null, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {*} value
     * @param {function(?Error)=} onComplete
     * @return {!firebase.Promise}
     */
    OnDisconnect.prototype.set = function (value, onComplete) {
        util_1.validateArgCount('OnDisconnect.set', 1, 2, arguments.length);
        validation_1.validateWritablePath('OnDisconnect.set', this.path_);
        validation_1.validateFirebaseDataArg('OnDisconnect.set', 1, value, this.path_, false);
        util_1.validateCallback('OnDisconnect.set', 2, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo_.onDisconnectSet(this.path_, value, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {*} value
     * @param {number|string|null} priority
     * @param {function(?Error)=} onComplete
     * @return {!firebase.Promise}
     */
    OnDisconnect.prototype.setWithPriority = function (value, priority, onComplete) {
        util_1.validateArgCount('OnDisconnect.setWithPriority', 2, 3, arguments.length);
        validation_1.validateWritablePath('OnDisconnect.setWithPriority', this.path_);
        validation_1.validateFirebaseDataArg('OnDisconnect.setWithPriority', 1, value, this.path_, false);
        validation_1.validatePriority('OnDisconnect.setWithPriority', 2, priority, false);
        util_1.validateCallback('OnDisconnect.setWithPriority', 3, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo_.onDisconnectSetWithPriority(this.path_, value, priority, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    /**
     * @param {!Object} objectToMerge
     * @param {function(?Error)=} onComplete
     * @return {!firebase.Promise}
     */
    OnDisconnect.prototype.update = function (objectToMerge, onComplete) {
        util_1.validateArgCount('OnDisconnect.update', 1, 2, arguments.length);
        validation_1.validateWritablePath('OnDisconnect.update', this.path_);
        if (Array.isArray(objectToMerge)) {
            var newObjectToMerge = {};
            for (var i = 0; i < objectToMerge.length; ++i) {
                newObjectToMerge['' + i] = objectToMerge[i];
            }
            objectToMerge = newObjectToMerge;
            util_2.warn('Passing an Array to firebase.database.onDisconnect().update() is deprecated. Use set() if you want to overwrite the ' +
                'existing data, or an Object with integer keys if you really do want to only update some of the children.');
        }
        validation_1.validateFirebaseMergeDataArg('OnDisconnect.update', 1, objectToMerge, this.path_, false);
        util_1.validateCallback('OnDisconnect.update', 2, onComplete, true);
        var deferred = new util_3.Deferred();
        this.repo_.onDisconnectUpdate(this.path_, objectToMerge, deferred.wrapCallback(onComplete));
        return deferred.promise;
    };
    return OnDisconnect;
}());
exports.OnDisconnect = OnDisconnect;



},{"../core/util/util":63,"../core/util/validation":64,"@firebase/util":92}],12:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var RepoInfo_1 = require("../core/RepoInfo");
var PersistentConnection_1 = require("../core/PersistentConnection");
var RepoManager_1 = require("../core/RepoManager");
var Connection_1 = require("../realtime/Connection");
exports.DataConnection = PersistentConnection_1.PersistentConnection;
/**
 * @param {!string} pathString
 * @param {function(*)} onComplete
 */
PersistentConnection_1.PersistentConnection.prototype.simpleListen = function (pathString, onComplete) {
    this.sendRequest('q', { p: pathString }, onComplete);
};
/**
 * @param {*} data
 * @param {function(*)} onEcho
 */
PersistentConnection_1.PersistentConnection.prototype.echo = function (data, onEcho) {
    this.sendRequest('echo', { d: data }, onEcho);
};
// RealTimeConnection properties that we use in tests.
exports.RealTimeConnection = Connection_1.Connection;
/**
 * @param {function(): string} newHash
 * @return {function()}
 */
exports.hijackHash = function (newHash) {
    var oldPut = PersistentConnection_1.PersistentConnection.prototype.put;
    PersistentConnection_1.PersistentConnection.prototype.put = function (pathString, data, opt_onComplete, opt_hash) {
        if (opt_hash !== undefined) {
            opt_hash = newHash();
        }
        oldPut.call(this, pathString, data, opt_onComplete, opt_hash);
    };
    return function () {
        PersistentConnection_1.PersistentConnection.prototype.put = oldPut;
    };
};
/**
 * @type {function(new:RepoInfo, !string, boolean, !string, boolean): undefined}
 */
exports.ConnectionTarget = RepoInfo_1.RepoInfo;
/**
 * @param {!Query} query
 * @return {!string}
 */
exports.queryIdentifier = function (query) {
    return query.queryIdentifier();
};
/**
 * @param {!Query} firebaseRef
 * @return {!Object}
 */
exports.listens = function (firebaseRef) {
    return firebaseRef.repo.persistentConnection_.listens_;
};
/**
 * Forces the RepoManager to create Repos that use ReadonlyRestClient instead of PersistentConnection.
 *
 * @param {boolean} forceRestClient
 */
exports.forceRestClient = function (forceRestClient) {
    RepoManager_1.RepoManager.getInstance().forceRestClient(forceRestClient);
};



},{"../core/PersistentConnection":15,"../core/RepoInfo":18,"../core/RepoManager":19,"../realtime/Connection":81}],13:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("./util/util");
/**
 * Abstraction around FirebaseApp's token fetching capabilities.
 */
var AuthTokenProvider = /** @class */ (function () {
    /**
     * @param {!FirebaseApp} app_
     */
    function AuthTokenProvider(app_) {
        this.app_ = app_;
    }
    /**
     * @param {boolean} forceRefresh
     * @return {!Promise<FirebaseAuthTokenData>}
     */
    AuthTokenProvider.prototype.getToken = function (forceRefresh) {
        return this.app_['INTERNAL']['getToken'](forceRefresh).then(null, 
        // .catch
        function (error) {
            // TODO: Need to figure out all the cases this is raised and whether
            // this makes sense.
            if (error && error.code === 'auth/token-not-initialized') {
                util_1.log('Got auth/token-not-initialized error.  Treating as null token.');
                return null;
            }
            else {
                return Promise.reject(error);
            }
        });
    };
    AuthTokenProvider.prototype.addTokenChangeListener = function (listener) {
        // TODO: We might want to wrap the listener and call it with no args to
        // avoid a leaky abstraction, but that makes removing the listener harder.
        this.app_['INTERNAL']['addAuthTokenListener'](listener);
    };
    AuthTokenProvider.prototype.removeTokenChangeListener = function (listener) {
        this.app_['INTERNAL']['removeAuthTokenListener'](listener);
    };
    AuthTokenProvider.prototype.notifyForInvalidToken = function () {
        var errorMessage = 'Provided authentication credentials for the app named "' +
            this.app_.name +
            '" are invalid. This usually indicates your app was not ' +
            'initialized correctly. ';
        if ('credential' in this.app_.options) {
            errorMessage +=
                'Make sure the "credential" property provided to initializeApp() ' +
                    'is authorized to access the specified "databaseURL" and is from the correct ' +
                    'project.';
        }
        else if ('serviceAccount' in this.app_.options) {
            errorMessage +=
                'Make sure the "serviceAccount" property provided to initializeApp() ' +
                    'is authorized to access the specified "databaseURL" and is from the correct ' +
                    'project.';
        }
        else {
            errorMessage +=
                'Make sure the "apiKey" and "databaseURL" properties provided to ' +
                    'initializeApp() match the values provided for your app at ' +
                    'https://console.firebase.google.com/.';
        }
        util_1.warn(errorMessage);
    };
    return AuthTokenProvider;
}());
exports.AuthTokenProvider = AuthTokenProvider;



},{"./util/util":63}],14:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var ImmutableTree_1 = require("./util/ImmutableTree");
var Path_1 = require("./util/Path");
var util_1 = require("@firebase/util");
var Node_1 = require("./snap/Node");
var PriorityIndex_1 = require("./snap/indexes/PriorityIndex");
var util_2 = require("@firebase/util");
/**
 * This class holds a collection of writes that can be applied to nodes in unison. It abstracts away the logic with
 * dealing with priority writes and multiple nested writes. At any given path there is only allowed to be one write
 * modifying that path. Any write to an existing path or shadowing an existing path will modify that existing write
 * to reflect the write added.
 *
 * @constructor
 * @param {!ImmutableTree.<!Node>} writeTree
 */
var CompoundWrite = /** @class */ (function () {
    function CompoundWrite(writeTree_) {
        this.writeTree_ = writeTree_;
    }
    /**
     * @param {!Path} path
     * @param {!Node} node
     * @return {!CompoundWrite}
     */
    CompoundWrite.prototype.addWrite = function (path, node) {
        if (path.isEmpty()) {
            return new CompoundWrite(new ImmutableTree_1.ImmutableTree(node));
        }
        else {
            var rootmost = this.writeTree_.findRootMostValueAndPath(path);
            if (rootmost != null) {
                var rootMostPath = rootmost.path;
                var value = rootmost.value;
                var relativePath = Path_1.Path.relativePath(rootMostPath, path);
                value = value.updateChild(relativePath, node);
                return new CompoundWrite(this.writeTree_.set(rootMostPath, value));
            }
            else {
                var subtree = new ImmutableTree_1.ImmutableTree(node);
                var newWriteTree = this.writeTree_.setTree(path, subtree);
                return new CompoundWrite(newWriteTree);
            }
        }
    };
    /**
     * @param {!Path} path
     * @param {!Object.<string, !Node>} updates
     * @return {!CompoundWrite}
     */
    CompoundWrite.prototype.addWrites = function (path, updates) {
        var newWrite = this;
        util_1.forEach(updates, function (childKey, node) {
            newWrite = newWrite.addWrite(path.child(childKey), node);
        });
        return newWrite;
    };
    /**
     * Will remove a write at the given path and deeper paths. This will <em>not</em> modify a write at a higher
     * location, which must be removed by calling this method with that path.
     *
     * @param {!Path} path The path at which a write and all deeper writes should be removed
     * @return {!CompoundWrite} The new CompoundWrite with the removed path
     */
    CompoundWrite.prototype.removeWrite = function (path) {
        if (path.isEmpty()) {
            return CompoundWrite.Empty;
        }
        else {
            var newWriteTree = this.writeTree_.setTree(path, ImmutableTree_1.ImmutableTree.Empty);
            return new CompoundWrite(newWriteTree);
        }
    };
    /**
     * Returns whether this CompoundWrite will fully overwrite a node at a given location and can therefore be
     * considered "complete".
     *
     * @param {!Path} path The path to check for
     * @return {boolean} Whether there is a complete write at that path
     */
    CompoundWrite.prototype.hasCompleteWrite = function (path) {
        return this.getCompleteNode(path) != null;
    };
    /**
     * Returns a node for a path if and only if the node is a "complete" overwrite at that path. This will not aggregate
     * writes from deeper paths, but will return child nodes from a more shallow path.
     *
     * @param {!Path} path The path to get a complete write
     * @return {?Node} The node if complete at that path, or null otherwise.
     */
    CompoundWrite.prototype.getCompleteNode = function (path) {
        var rootmost = this.writeTree_.findRootMostValueAndPath(path);
        if (rootmost != null) {
            return this.writeTree_
                .get(rootmost.path)
                .getChild(Path_1.Path.relativePath(rootmost.path, path));
        }
        else {
            return null;
        }
    };
    /**
     * Returns all children that are guaranteed to be a complete overwrite.
     *
     * @return {!Array.<NamedNode>} A list of all complete children.
     */
    CompoundWrite.prototype.getCompleteChildren = function () {
        var children = [];
        var node = this.writeTree_.value;
        if (node != null) {
            // If it's a leaf node, it has no children; so nothing to do.
            if (!node.isLeafNode()) {
                node.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (childName, childNode) {
                    children.push(new Node_1.NamedNode(childName, childNode));
                });
            }
        }
        else {
            this.writeTree_.children.inorderTraversal(function (childName, childTree) {
                if (childTree.value != null) {
                    children.push(new Node_1.NamedNode(childName, childTree.value));
                }
            });
        }
        return children;
    };
    /**
     * @param {!Path} path
     * @return {!CompoundWrite}
     */
    CompoundWrite.prototype.childCompoundWrite = function (path) {
        if (path.isEmpty()) {
            return this;
        }
        else {
            var shadowingNode = this.getCompleteNode(path);
            if (shadowingNode != null) {
                return new CompoundWrite(new ImmutableTree_1.ImmutableTree(shadowingNode));
            }
            else {
                return new CompoundWrite(this.writeTree_.subtree(path));
            }
        }
    };
    /**
     * Returns true if this CompoundWrite is empty and therefore does not modify any nodes.
     * @return {boolean} Whether this CompoundWrite is empty
     */
    CompoundWrite.prototype.isEmpty = function () {
        return this.writeTree_.isEmpty();
    };
    /**
     * Applies this CompoundWrite to a node. The node is returned with all writes from this CompoundWrite applied to the
     * node
     * @param {!Node} node The node to apply this CompoundWrite to
     * @return {!Node} The node with all writes applied
     */
    CompoundWrite.prototype.apply = function (node) {
        return CompoundWrite.applySubtreeWrite_(Path_1.Path.Empty, this.writeTree_, node);
    };
    /**
     * @type {!CompoundWrite}
     */
    CompoundWrite.Empty = new CompoundWrite(new ImmutableTree_1.ImmutableTree(null));
    /**
     * @param {!Path} relativePath
     * @param {!ImmutableTree.<!Node>} writeTree
     * @param {!Node} node
     * @return {!Node}
     * @private
     */
    CompoundWrite.applySubtreeWrite_ = function (relativePath, writeTree, node) {
        if (writeTree.value != null) {
            // Since there a write is always a leaf, we're done here
            return node.updateChild(relativePath, writeTree.value);
        }
        else {
            var priorityWrite_1 = null;
            writeTree.children.inorderTraversal(function (childKey, childTree) {
                if (childKey === '.priority') {
                    // Apply priorities at the end so we don't update priorities for either empty nodes or forget
                    // to apply priorities to empty nodes that are later filled
                    util_2.assert(childTree.value !== null, 'Priority writes must always be leaf nodes');
                    priorityWrite_1 = childTree.value;
                }
                else {
                    node = CompoundWrite.applySubtreeWrite_(relativePath.child(childKey), childTree, node);
                }
            });
            // If there was a priority write, we only apply it if the node is not empty
            if (!node.getChild(relativePath).isEmpty() && priorityWrite_1 !== null) {
                node = node.updateChild(relativePath.child('.priority'), priorityWrite_1);
            }
            return node;
        }
    };
    return CompoundWrite;
}());
exports.CompoundWrite = CompoundWrite;



},{"./snap/Node":35,"./snap/indexes/PriorityIndex":41,"./util/ImmutableTree":54,"./util/Path":57,"@firebase/util":92}],15:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var app_1 = require("@firebase/app");
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
var util_3 = require("@firebase/util");
var util_4 = require("./util/util");
var Path_1 = require("./util/Path");
var VisibilityMonitor_1 = require("./util/VisibilityMonitor");
var OnlineMonitor_1 = require("./util/OnlineMonitor");
var util_5 = require("@firebase/util");
var Connection_1 = require("../realtime/Connection");
var util_6 = require("@firebase/util");
var util_7 = require("@firebase/util");
var ServerActions_1 = require("./ServerActions");
var RECONNECT_MIN_DELAY = 1000;
var RECONNECT_MAX_DELAY_DEFAULT = 60 * 5 * 1000; // 5 minutes in milliseconds (Case: 1858)
var RECONNECT_MAX_DELAY_FOR_ADMINS = 30 * 1000; // 30 seconds for admin clients (likely to be a backend server)
var RECONNECT_DELAY_MULTIPLIER = 1.3;
var RECONNECT_DELAY_RESET_TIMEOUT = 30000; // Reset delay back to MIN_DELAY after being connected for 30sec.
var SERVER_KILL_INTERRUPT_REASON = 'server_kill';
// If auth fails repeatedly, we'll assume something is wrong and log a warning / back off.
var INVALID_AUTH_TOKEN_THRESHOLD = 3;
/**
 * Firebase connection.  Abstracts wire protocol and handles reconnecting.
 *
 * NOTE: All JSON objects sent to the realtime connection must have property names enclosed
 * in quotes to make sure the closure compiler does not minify them.
 */
var PersistentConnection = /** @class */ (function (_super) {
    tslib_1.__extends(PersistentConnection, _super);
    /**
     * @implements {ServerActions}
     * @param {!RepoInfo} repoInfo_ Data about the namespace we are connecting to
     * @param {function(string, *, boolean, ?number)} onDataUpdate_ A callback for new data from the server
     * @param onConnectStatus_
     * @param onServerInfoUpdate_
     * @param authTokenProvider_
     * @param authOverride_
     */
    function PersistentConnection(repoInfo_, onDataUpdate_, onConnectStatus_, onServerInfoUpdate_, authTokenProvider_, authOverride_) {
        var _this = _super.call(this) || this;
        _this.repoInfo_ = repoInfo_;
        _this.onDataUpdate_ = onDataUpdate_;
        _this.onConnectStatus_ = onConnectStatus_;
        _this.onServerInfoUpdate_ = onServerInfoUpdate_;
        _this.authTokenProvider_ = authTokenProvider_;
        _this.authOverride_ = authOverride_;
        // Used for diagnostic logging.
        _this.id = PersistentConnection.nextPersistentConnectionId_++;
        _this.log_ = util_4.logWrapper('p:' + _this.id + ':');
        /** @private {Object} */
        _this.interruptReasons_ = {};
        _this.listens_ = {};
        _this.outstandingPuts_ = [];
        _this.outstandingPutCount_ = 0;
        _this.onDisconnectRequestQueue_ = [];
        _this.connected_ = false;
        _this.reconnectDelay_ = RECONNECT_MIN_DELAY;
        _this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_DEFAULT;
        _this.securityDebugCallback_ = null;
        _this.lastSessionId = null;
        /** @private {number|null} */
        _this.establishConnectionTimer_ = null;
        /** @private {boolean} */
        _this.visible_ = false;
        // Before we get connected, we keep a queue of pending messages to send.
        _this.requestCBHash_ = {};
        _this.requestNumber_ = 0;
        /** @private {?{
         *   sendRequest(Object),
         *   close()
         * }} */
        _this.realtime_ = null;
        /** @private {string|null} */
        _this.authToken_ = null;
        _this.forceTokenRefresh_ = false;
        _this.invalidAuthTokenCount_ = 0;
        _this.firstConnection_ = true;
        _this.lastConnectionAttemptTime_ = null;
        _this.lastConnectionEstablishedTime_ = null;
        if (authOverride_ && !util_7.isNodeSdk()) {
            throw new Error('Auth override specified in options, but not supported on non Node.js platforms');
        }
        _this.scheduleConnect_(0);
        VisibilityMonitor_1.VisibilityMonitor.getInstance().on('visible', _this.onVisible_, _this);
        if (repoInfo_.host.indexOf('fblocal') === -1) {
            OnlineMonitor_1.OnlineMonitor.getInstance().on('online', _this.onOnline_, _this);
        }
        return _this;
    }
    /**
     * @param {!string} action
     * @param {*} body
     * @param {function(*)=} onResponse
     * @protected
     */
    PersistentConnection.prototype.sendRequest = function (action, body, onResponse) {
        var curReqNum = ++this.requestNumber_;
        var msg = { r: curReqNum, a: action, b: body };
        this.log_(util_2.stringify(msg));
        util_3.assert(this.connected_, "sendRequest call when we're not connected not allowed.");
        this.realtime_.sendRequest(msg);
        if (onResponse) {
            this.requestCBHash_[curReqNum] = onResponse;
        }
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.listen = function (query, currentHashFn, tag, onComplete) {
        var queryId = query.queryIdentifier();
        var pathString = query.path.toString();
        this.log_('Listen called for ' + pathString + ' ' + queryId);
        this.listens_[pathString] = this.listens_[pathString] || {};
        util_3.assert(query.getQueryParams().isDefault() ||
            !query.getQueryParams().loadsAllData(), 'listen() called for non-default but complete query');
        util_3.assert(!this.listens_[pathString][queryId], 'listen() called twice for same path/queryId.');
        var listenSpec = {
            onComplete: onComplete,
            hashFn: currentHashFn,
            query: query,
            tag: tag
        };
        this.listens_[pathString][queryId] = listenSpec;
        if (this.connected_) {
            this.sendListen_(listenSpec);
        }
    };
    /**
     * @param {!{onComplete(),
     *           hashFn():!string,
     *           query: !Query,
     *           tag: ?number}} listenSpec
     * @private
     */
    PersistentConnection.prototype.sendListen_ = function (listenSpec) {
        var _this = this;
        var query = listenSpec.query;
        var pathString = query.path.toString();
        var queryId = query.queryIdentifier();
        this.log_('Listen on ' + pathString + ' for ' + queryId);
        var req = { /*path*/ p: pathString };
        var action = 'q';
        // Only bother to send query if it's non-default.
        if (listenSpec.tag) {
            req['q'] = query.queryObject();
            req['t'] = listenSpec.tag;
        }
        req['h'] = listenSpec.hashFn();
        this.sendRequest(action, req, function (message) {
            var payload = message['d'];
            var status = message['s'];
            // print warnings in any case...
            PersistentConnection.warnOnListenWarnings_(payload, query);
            var currentListenSpec = _this.listens_[pathString] && _this.listens_[pathString][queryId];
            // only trigger actions if the listen hasn't been removed and readded
            if (currentListenSpec === listenSpec) {
                _this.log_('listen response', message);
                if (status !== 'ok') {
                    _this.removeListen_(pathString, queryId);
                }
                if (listenSpec.onComplete) {
                    listenSpec.onComplete(status, payload);
                }
            }
        });
    };
    /**
     * @param {*} payload
     * @param {!Query} query
     * @private
     */
    PersistentConnection.warnOnListenWarnings_ = function (payload, query) {
        if (payload && typeof payload === 'object' && util_1.contains(payload, 'w')) {
            var warnings = util_1.safeGet(payload, 'w');
            if (Array.isArray(warnings) && ~warnings.indexOf('no_index')) {
                var indexSpec = '".indexOn": "' +
                    query
                        .getQueryParams()
                        .getIndex()
                        .toString() +
                    '"';
                var indexPath = query.path.toString();
                util_4.warn("Using an unspecified index. Your data will be downloaded and " +
                    ("filtered on the client. Consider adding " + indexSpec + " at ") +
                    (indexPath + " to your security rules for better performance."));
            }
        }
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.refreshAuthToken = function (token) {
        this.authToken_ = token;
        this.log_('Auth token refreshed');
        if (this.authToken_) {
            this.tryAuth();
        }
        else {
            //If we're connected we want to let the server know to unauthenticate us. If we're not connected, simply delete
            //the credential so we dont become authenticated next time we connect.
            if (this.connected_) {
                this.sendRequest('unauth', {}, function () { });
            }
        }
        this.reduceReconnectDelayIfAdminCredential_(token);
    };
    /**
     * @param {!string} credential
     * @private
     */
    PersistentConnection.prototype.reduceReconnectDelayIfAdminCredential_ = function (credential) {
        // NOTE: This isn't intended to be bulletproof (a malicious developer can always just modify the client).
        // Additionally, we don't bother resetting the max delay back to the default if auth fails / expires.
        var isFirebaseSecret = credential && credential.length === 40;
        if (isFirebaseSecret || util_5.isAdmin(credential)) {
            this.log_('Admin auth credential detected.  Reducing max reconnect time.');
            this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;
        }
    };
    /**
     * Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like
     * a auth revoked (the connection is closed).
     */
    PersistentConnection.prototype.tryAuth = function () {
        var _this = this;
        if (this.connected_ && this.authToken_) {
            var token_1 = this.authToken_;
            var authMethod = util_5.isValidFormat(token_1) ? 'auth' : 'gauth';
            var requestData = { cred: token_1 };
            if (this.authOverride_ === null) {
                requestData['noauth'] = true;
            }
            else if (typeof this.authOverride_ === 'object') {
                requestData['authvar'] = this.authOverride_;
            }
            this.sendRequest(authMethod, requestData, function (res) {
                var status = res['s'];
                var data = res['d'] || 'error';
                if (_this.authToken_ === token_1) {
                    if (status === 'ok') {
                        _this.invalidAuthTokenCount_ = 0;
                    }
                    else {
                        // Triggers reconnect and force refresh for auth token
                        _this.onAuthRevoked_(status, data);
                    }
                }
            });
        }
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.unlisten = function (query, tag) {
        var pathString = query.path.toString();
        var queryId = query.queryIdentifier();
        this.log_('Unlisten called for ' + pathString + ' ' + queryId);
        util_3.assert(query.getQueryParams().isDefault() ||
            !query.getQueryParams().loadsAllData(), 'unlisten() called for non-default but complete query');
        var listen = this.removeListen_(pathString, queryId);
        if (listen && this.connected_) {
            this.sendUnlisten_(pathString, queryId, query.queryObject(), tag);
        }
    };
    PersistentConnection.prototype.sendUnlisten_ = function (pathString, queryId, queryObj, tag) {
        this.log_('Unlisten on ' + pathString + ' for ' + queryId);
        var req = { /*path*/ p: pathString };
        var action = 'n';
        // Only bother sending queryId if it's non-default.
        if (tag) {
            req['q'] = queryObj;
            req['t'] = tag;
        }
        this.sendRequest(action, req);
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.onDisconnectPut = function (pathString, data, onComplete) {
        if (this.connected_) {
            this.sendOnDisconnect_('o', pathString, data, onComplete);
        }
        else {
            this.onDisconnectRequestQueue_.push({
                pathString: pathString,
                action: 'o',
                data: data,
                onComplete: onComplete
            });
        }
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.onDisconnectMerge = function (pathString, data, onComplete) {
        if (this.connected_) {
            this.sendOnDisconnect_('om', pathString, data, onComplete);
        }
        else {
            this.onDisconnectRequestQueue_.push({
                pathString: pathString,
                action: 'om',
                data: data,
                onComplete: onComplete
            });
        }
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.onDisconnectCancel = function (pathString, onComplete) {
        if (this.connected_) {
            this.sendOnDisconnect_('oc', pathString, null, onComplete);
        }
        else {
            this.onDisconnectRequestQueue_.push({
                pathString: pathString,
                action: 'oc',
                data: null,
                onComplete: onComplete
            });
        }
    };
    PersistentConnection.prototype.sendOnDisconnect_ = function (action, pathString, data, onComplete) {
        var request = { /*path*/ p: pathString, /*data*/ d: data };
        this.log_('onDisconnect ' + action, request);
        this.sendRequest(action, request, function (response) {
            if (onComplete) {
                setTimeout(function () {
                    onComplete(response['s'], response['d']);
                }, Math.floor(0));
            }
        });
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.put = function (pathString, data, onComplete, hash) {
        this.putInternal('p', pathString, data, onComplete, hash);
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.merge = function (pathString, data, onComplete, hash) {
        this.putInternal('m', pathString, data, onComplete, hash);
    };
    PersistentConnection.prototype.putInternal = function (action, pathString, data, onComplete, hash) {
        var request = {
            /*path*/ p: pathString,
            /*data*/ d: data
        };
        if (hash !== undefined)
            request['h'] = hash;
        // TODO: Only keep track of the most recent put for a given path?
        this.outstandingPuts_.push({
            action: action,
            request: request,
            onComplete: onComplete
        });
        this.outstandingPutCount_++;
        var index = this.outstandingPuts_.length - 1;
        if (this.connected_) {
            this.sendPut_(index);
        }
        else {
            this.log_('Buffering put: ' + pathString);
        }
    };
    PersistentConnection.prototype.sendPut_ = function (index) {
        var _this = this;
        var action = this.outstandingPuts_[index].action;
        var request = this.outstandingPuts_[index].request;
        var onComplete = this.outstandingPuts_[index].onComplete;
        this.outstandingPuts_[index].queued = this.connected_;
        this.sendRequest(action, request, function (message) {
            _this.log_(action + ' response', message);
            delete _this.outstandingPuts_[index];
            _this.outstandingPutCount_--;
            // Clean up array occasionally.
            if (_this.outstandingPutCount_ === 0) {
                _this.outstandingPuts_ = [];
            }
            if (onComplete)
                onComplete(message['s'], message['d']);
        });
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.reportStats = function (stats) {
        var _this = this;
        // If we're not connected, we just drop the stats.
        if (this.connected_) {
            var request = { /*counters*/ c: stats };
            this.log_('reportStats', request);
            this.sendRequest(/*stats*/ 's', request, function (result) {
                var status = result['s'];
                if (status !== 'ok') {
                    var errorReason = result['d'];
                    _this.log_('reportStats', 'Error sending stats: ' + errorReason);
                }
            });
        }
    };
    /**
     * @param {*} message
     * @private
     */
    PersistentConnection.prototype.onDataMessage_ = function (message) {
        if ('r' in message) {
            // this is a response
            this.log_('from server: ' + util_2.stringify(message));
            var reqNum = message['r'];
            var onResponse = this.requestCBHash_[reqNum];
            if (onResponse) {
                delete this.requestCBHash_[reqNum];
                onResponse(message['b']);
            }
        }
        else if ('error' in message) {
            throw 'A server-side error has occurred: ' + message['error'];
        }
        else if ('a' in message) {
            // a and b are action and body, respectively
            this.onDataPush_(message['a'], message['b']);
        }
    };
    PersistentConnection.prototype.onDataPush_ = function (action, body) {
        this.log_('handleServerMessage', action, body);
        if (action === 'd')
            this.onDataUpdate_(body['p'], body['d'], 
            /*isMerge*/ false, body['t']);
        else if (action === 'm')
            this.onDataUpdate_(body['p'], body['d'], 
            /*isMerge=*/ true, body['t']);
        else if (action === 'c')
            this.onListenRevoked_(body['p'], body['q']);
        else if (action === 'ac')
            this.onAuthRevoked_(body['s'], body['d']);
        else if (action === 'sd')
            this.onSecurityDebugPacket_(body);
        else
            util_4.error('Unrecognized action received from server: ' +
                util_2.stringify(action) +
                '\nAre you using the latest client?');
    };
    PersistentConnection.prototype.onReady_ = function (timestamp, sessionId) {
        this.log_('connection ready');
        this.connected_ = true;
        this.lastConnectionEstablishedTime_ = new Date().getTime();
        this.handleTimestamp_(timestamp);
        this.lastSessionId = sessionId;
        if (this.firstConnection_) {
            this.sendConnectStats_();
        }
        this.restoreState_();
        this.firstConnection_ = false;
        this.onConnectStatus_(true);
    };
    PersistentConnection.prototype.scheduleConnect_ = function (timeout) {
        var _this = this;
        util_3.assert(!this.realtime_, "Scheduling a connect when we're already connected/ing?");
        if (this.establishConnectionTimer_) {
            clearTimeout(this.establishConnectionTimer_);
        }
        // NOTE: Even when timeout is 0, it's important to do a setTimeout to work around an infuriating "Security Error" in
        // Firefox when trying to write to our long-polling iframe in some scenarios (e.g. Forge or our unit tests).
        this.establishConnectionTimer_ = setTimeout(function () {
            _this.establishConnectionTimer_ = null;
            _this.establishConnection_();
        }, Math.floor(timeout));
    };
    /**
     * @param {boolean} visible
     * @private
     */
    PersistentConnection.prototype.onVisible_ = function (visible) {
        // NOTE: Tabbing away and back to a window will defeat our reconnect backoff, but I think that's fine.
        if (visible &&
            !this.visible_ &&
            this.reconnectDelay_ === this.maxReconnectDelay_) {
            this.log_('Window became visible.  Reducing delay.');
            this.reconnectDelay_ = RECONNECT_MIN_DELAY;
            if (!this.realtime_) {
                this.scheduleConnect_(0);
            }
        }
        this.visible_ = visible;
    };
    PersistentConnection.prototype.onOnline_ = function (online) {
        if (online) {
            this.log_('Browser went online.');
            this.reconnectDelay_ = RECONNECT_MIN_DELAY;
            if (!this.realtime_) {
                this.scheduleConnect_(0);
            }
        }
        else {
            this.log_('Browser went offline.  Killing connection.');
            if (this.realtime_) {
                this.realtime_.close();
            }
        }
    };
    PersistentConnection.prototype.onRealtimeDisconnect_ = function () {
        this.log_('data client disconnected');
        this.connected_ = false;
        this.realtime_ = null;
        // Since we don't know if our sent transactions succeeded or not, we need to cancel them.
        this.cancelSentTransactions_();
        // Clear out the pending requests.
        this.requestCBHash_ = {};
        if (this.shouldReconnect_()) {
            if (!this.visible_) {
                this.log_("Window isn't visible.  Delaying reconnect.");
                this.reconnectDelay_ = this.maxReconnectDelay_;
                this.lastConnectionAttemptTime_ = new Date().getTime();
            }
            else if (this.lastConnectionEstablishedTime_) {
                // If we've been connected long enough, reset reconnect delay to minimum.
                var timeSinceLastConnectSucceeded = new Date().getTime() - this.lastConnectionEstablishedTime_;
                if (timeSinceLastConnectSucceeded > RECONNECT_DELAY_RESET_TIMEOUT)
                    this.reconnectDelay_ = RECONNECT_MIN_DELAY;
                this.lastConnectionEstablishedTime_ = null;
            }
            var timeSinceLastConnectAttempt = new Date().getTime() - this.lastConnectionAttemptTime_;
            var reconnectDelay = Math.max(0, this.reconnectDelay_ - timeSinceLastConnectAttempt);
            reconnectDelay = Math.random() * reconnectDelay;
            this.log_('Trying to reconnect in ' + reconnectDelay + 'ms');
            this.scheduleConnect_(reconnectDelay);
            // Adjust reconnect delay for next time.
            this.reconnectDelay_ = Math.min(this.maxReconnectDelay_, this.reconnectDelay_ * RECONNECT_DELAY_MULTIPLIER);
        }
        this.onConnectStatus_(false);
    };
    PersistentConnection.prototype.establishConnection_ = function () {
        if (this.shouldReconnect_()) {
            this.log_('Making a connection attempt');
            this.lastConnectionAttemptTime_ = new Date().getTime();
            this.lastConnectionEstablishedTime_ = null;
            var onDataMessage_1 = this.onDataMessage_.bind(this);
            var onReady_1 = this.onReady_.bind(this);
            var onDisconnect_1 = this.onRealtimeDisconnect_.bind(this);
            var connId_1 = this.id + ':' + PersistentConnection.nextConnectionId_++;
            var self_1 = this;
            var lastSessionId_1 = this.lastSessionId;
            var canceled_1 = false;
            var connection_1 = null;
            var closeFn_1 = function () {
                if (connection_1) {
                    connection_1.close();
                }
                else {
                    canceled_1 = true;
                    onDisconnect_1();
                }
            };
            var sendRequestFn = function (msg) {
                util_3.assert(connection_1, "sendRequest call when we're not connected not allowed.");
                connection_1.sendRequest(msg);
            };
            this.realtime_ = {
                close: closeFn_1,
                sendRequest: sendRequestFn
            };
            var forceRefresh = this.forceTokenRefresh_;
            this.forceTokenRefresh_ = false;
            // First fetch auth token, and establish connection after fetching the token was successful
            this.authTokenProvider_
                .getToken(forceRefresh)
                .then(function (result) {
                if (!canceled_1) {
                    util_4.log('getToken() completed. Creating connection.');
                    self_1.authToken_ = result && result.accessToken;
                    connection_1 = new Connection_1.Connection(connId_1, self_1.repoInfo_, onDataMessage_1, onReady_1, onDisconnect_1, 
                    /* onKill= */ function (reason) {
                        util_4.warn(reason + ' (' + self_1.repoInfo_.toString() + ')');
                        self_1.interrupt(SERVER_KILL_INTERRUPT_REASON);
                    }, lastSessionId_1);
                }
                else {
                    util_4.log('getToken() completed but was canceled');
                }
            })
                .then(null, function (error) {
                self_1.log_('Failed to get token: ' + error);
                if (!canceled_1) {
                    if (util_6.CONSTANTS.NODE_ADMIN) {
                        // This may be a critical error for the Admin Node.js SDK, so log a warning.
                        // But getToken() may also just have temporarily failed, so we still want to
                        // continue retrying.
                        util_4.warn(error);
                    }
                    closeFn_1();
                }
            });
        }
    };
    /**
     * @param {string} reason
     */
    PersistentConnection.prototype.interrupt = function (reason) {
        util_4.log('Interrupting connection for reason: ' + reason);
        this.interruptReasons_[reason] = true;
        if (this.realtime_) {
            this.realtime_.close();
        }
        else {
            if (this.establishConnectionTimer_) {
                clearTimeout(this.establishConnectionTimer_);
                this.establishConnectionTimer_ = null;
            }
            if (this.connected_) {
                this.onRealtimeDisconnect_();
            }
        }
    };
    /**
     * @param {string} reason
     */
    PersistentConnection.prototype.resume = function (reason) {
        util_4.log('Resuming connection for reason: ' + reason);
        delete this.interruptReasons_[reason];
        if (util_1.isEmpty(this.interruptReasons_)) {
            this.reconnectDelay_ = RECONNECT_MIN_DELAY;
            if (!this.realtime_) {
                this.scheduleConnect_(0);
            }
        }
    };
    PersistentConnection.prototype.handleTimestamp_ = function (timestamp) {
        var delta = timestamp - new Date().getTime();
        this.onServerInfoUpdate_({ serverTimeOffset: delta });
    };
    PersistentConnection.prototype.cancelSentTransactions_ = function () {
        for (var i = 0; i < this.outstandingPuts_.length; i++) {
            var put = this.outstandingPuts_[i];
            if (put && /*hash*/ 'h' in put.request && put.queued) {
                if (put.onComplete)
                    put.onComplete('disconnect');
                delete this.outstandingPuts_[i];
                this.outstandingPutCount_--;
            }
        }
        // Clean up array occasionally.
        if (this.outstandingPutCount_ === 0)
            this.outstandingPuts_ = [];
    };
    /**
     * @param {!string} pathString
     * @param {Array.<*>=} query
     * @private
     */
    PersistentConnection.prototype.onListenRevoked_ = function (pathString, query) {
        // Remove the listen and manufacture a "permission_denied" error for the failed listen.
        var queryId;
        if (!query) {
            queryId = 'default';
        }
        else {
            queryId = query.map(function (q) { return util_4.ObjectToUniqueKey(q); }).join('$');
        }
        var listen = this.removeListen_(pathString, queryId);
        if (listen && listen.onComplete)
            listen.onComplete('permission_denied');
    };
    /**
     * @param {!string} pathString
     * @param {!string} queryId
     * @return {{queries:Array.<Query>, onComplete:function(string)}}
     * @private
     */
    PersistentConnection.prototype.removeListen_ = function (pathString, queryId) {
        var normalizedPathString = new Path_1.Path(pathString).toString(); // normalize path.
        var listen;
        if (this.listens_[normalizedPathString] !== undefined) {
            listen = this.listens_[normalizedPathString][queryId];
            delete this.listens_[normalizedPathString][queryId];
            if (util_1.getCount(this.listens_[normalizedPathString]) === 0) {
                delete this.listens_[normalizedPathString];
            }
        }
        else {
            // all listens for this path has already been removed
            listen = undefined;
        }
        return listen;
    };
    PersistentConnection.prototype.onAuthRevoked_ = function (statusCode, explanation) {
        util_4.log('Auth token revoked: ' + statusCode + '/' + explanation);
        this.authToken_ = null;
        this.forceTokenRefresh_ = true;
        this.realtime_.close();
        if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {
            // We'll wait a couple times before logging the warning / increasing the
            // retry period since oauth tokens will report as "invalid" if they're
            // just expired. Plus there may be transient issues that resolve themselves.
            this.invalidAuthTokenCount_++;
            if (this.invalidAuthTokenCount_ >= INVALID_AUTH_TOKEN_THRESHOLD) {
                // Set a long reconnect delay because recovery is unlikely
                this.reconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;
                // Notify the auth token provider that the token is invalid, which will log
                // a warning
                this.authTokenProvider_.notifyForInvalidToken();
            }
        }
    };
    PersistentConnection.prototype.onSecurityDebugPacket_ = function (body) {
        if (this.securityDebugCallback_) {
            this.securityDebugCallback_(body);
        }
        else {
            if ('msg' in body) {
                console.log('FIREBASE: ' + body['msg'].replace('\n', '\nFIREBASE: '));
            }
        }
    };
    PersistentConnection.prototype.restoreState_ = function () {
        var _this = this;
        //Re-authenticate ourselves if we have a credential stored.
        this.tryAuth();
        // Puts depend on having received the corresponding data update from the server before they complete, so we must
        // make sure to send listens before puts.
        util_1.forEach(this.listens_, function (pathString, queries) {
            util_1.forEach(queries, function (key, listenSpec) {
                _this.sendListen_(listenSpec);
            });
        });
        for (var i = 0; i < this.outstandingPuts_.length; i++) {
            if (this.outstandingPuts_[i])
                this.sendPut_(i);
        }
        while (this.onDisconnectRequestQueue_.length) {
            var request = this.onDisconnectRequestQueue_.shift();
            this.sendOnDisconnect_(request.action, request.pathString, request.data, request.onComplete);
        }
    };
    /**
     * Sends client stats for first connection
     * @private
     */
    PersistentConnection.prototype.sendConnectStats_ = function () {
        var stats = {};
        var clientName = 'js';
        if (util_6.CONSTANTS.NODE_ADMIN) {
            clientName = 'admin_node';
        }
        else if (util_6.CONSTANTS.NODE_CLIENT) {
            clientName = 'node';
        }
        stats['sdk.' + clientName + '.' + app_1.default.SDK_VERSION.replace(/\./g, '-')] = 1;
        if (util_7.isMobileCordova()) {
            stats['framework.cordova'] = 1;
        }
        else if (util_7.isReactNative()) {
            stats['framework.reactnative'] = 1;
        }
        this.reportStats(stats);
    };
    /**
     * @return {boolean}
     * @private
     */
    PersistentConnection.prototype.shouldReconnect_ = function () {
        var online = OnlineMonitor_1.OnlineMonitor.getInstance().currentlyOnline();
        return util_1.isEmpty(this.interruptReasons_) && online;
    };
    /**
     * @private
     */
    PersistentConnection.nextPersistentConnectionId_ = 0;
    /**
     * Counter for number of connections created. Mainly used for tagging in the logs
     * @type {number}
     * @private
     */
    PersistentConnection.nextConnectionId_ = 0;
    return PersistentConnection;
}(ServerActions_1.ServerActions));
exports.PersistentConnection = PersistentConnection;



},{"../realtime/Connection":81,"./ServerActions":21,"./util/OnlineMonitor":56,"./util/Path":57,"./util/VisibilityMonitor":61,"./util/util":63,"@firebase/app":1,"@firebase/util":92,"tslib":121}],16:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var util_1 = require("@firebase/util");
var util_2 = require("./util/util");
var util_3 = require("@firebase/util");
var util_4 = require("@firebase/util");
var util_5 = require("@firebase/util");
var ServerActions_1 = require("./ServerActions");
/**
 * An implementation of ServerActions that communicates with the server via REST requests.
 * This is mostly useful for compatibility with crawlers, where we don't want to spin up a full
 * persistent connection (using WebSockets or long-polling)
 */
var ReadonlyRestClient = /** @class */ (function (_super) {
    tslib_1.__extends(ReadonlyRestClient, _super);
    /**
     * @param {!RepoInfo} repoInfo_ Data about the namespace we are connecting to
     * @param {function(string, *, boolean, ?number)} onDataUpdate_ A callback for new data from the server
     * @param {AuthTokenProvider} authTokenProvider_
     * @implements {ServerActions}
     */
    function ReadonlyRestClient(repoInfo_, onDataUpdate_, authTokenProvider_) {
        var _this = _super.call(this) || this;
        _this.repoInfo_ = repoInfo_;
        _this.onDataUpdate_ = onDataUpdate_;
        _this.authTokenProvider_ = authTokenProvider_;
        /** @private {function(...[*])} */
        _this.log_ = util_2.logWrapper('p:rest:');
        /**
         * We don't actually need to track listens, except to prevent us calling an onComplete for a listen
         * that's been removed. :-/
         *
         * @private {!Object.<string, !Object>}
         */
        _this.listens_ = {};
        return _this;
    }
    ReadonlyRestClient.prototype.reportStats = function (stats) {
        throw new Error('Method not implemented.');
    };
    /**
     * @param {!Query} query
     * @param {?number=} tag
     * @return {string}
     * @private
     */
    ReadonlyRestClient.getListenId_ = function (query, tag) {
        if (tag !== undefined) {
            return 'tag$' + tag;
        }
        else {
            util_1.assert(query.getQueryParams().isDefault(), "should have a tag if it's not a default query.");
            return query.path.toString();
        }
    };
    /** @inheritDoc */
    ReadonlyRestClient.prototype.listen = function (query, currentHashFn, tag, onComplete) {
        var _this = this;
        var pathString = query.path.toString();
        this.log_('Listen called for ' + pathString + ' ' + query.queryIdentifier());
        // Mark this listener so we can tell if it's removed.
        var listenId = ReadonlyRestClient.getListenId_(query, tag);
        var thisListen = {};
        this.listens_[listenId] = thisListen;
        var queryStringParamaters = query
            .getQueryParams()
            .toRestQueryStringParameters();
        this.restRequest_(pathString + '.json', queryStringParamaters, function (error, result) {
            var data = result;
            if (error === 404) {
                data = null;
                error = null;
            }
            if (error === null) {
                _this.onDataUpdate_(pathString, data, /*isMerge=*/ false, tag);
            }
            if (util_4.safeGet(_this.listens_, listenId) === thisListen) {
                var status_1;
                if (!error) {
                    status_1 = 'ok';
                }
                else if (error == 401) {
                    status_1 = 'permission_denied';
                }
                else {
                    status_1 = 'rest_error:' + error;
                }
                onComplete(status_1, null);
            }
        });
    };
    /** @inheritDoc */
    ReadonlyRestClient.prototype.unlisten = function (query, tag) {
        var listenId = ReadonlyRestClient.getListenId_(query, tag);
        delete this.listens_[listenId];
    };
    /** @inheritDoc */
    ReadonlyRestClient.prototype.refreshAuthToken = function (token) {
        // no-op since we just always call getToken.
    };
    /**
     * Performs a REST request to the given path, with the provided query string parameters,
     * and any auth credentials we have.
     *
     * @param {!string} pathString
     * @param {!Object.<string, *>} queryStringParameters
     * @param {?function(?number, *=)} callback
     * @private
     */
    ReadonlyRestClient.prototype.restRequest_ = function (pathString, queryStringParameters, callback) {
        var _this = this;
        if (queryStringParameters === void 0) { queryStringParameters = {}; }
        queryStringParameters['format'] = 'export';
        this.authTokenProvider_
            .getToken(/*forceRefresh=*/ false)
            .then(function (authTokenData) {
            var authToken = authTokenData && authTokenData.accessToken;
            if (authToken) {
                queryStringParameters['auth'] = authToken;
            }
            var url = (_this.repoInfo_.secure ? 'https://' : 'http://') +
                _this.repoInfo_.host +
                pathString +
                '?' +
                util_5.querystring(queryStringParameters);
            _this.log_('Sending REST request for ' + url);
            var xhr = new XMLHttpRequest();
            xhr.onreadystatechange = function () {
                if (callback && xhr.readyState === 4) {
                    _this.log_('REST Response for ' + url + ' received. status:', xhr.status, 'response:', xhr.responseText);
                    var res = null;
                    if (xhr.status >= 200 && xhr.status < 300) {
                        try {
                            res = util_3.jsonEval(xhr.responseText);
                        }
                        catch (e) {
                            util_2.warn('Failed to parse JSON response for ' +
                                url +
                                ': ' +
                                xhr.responseText);
                        }
                        callback(null, res);
                    }
                    else {
                        // 401 and 404 are expected.
                        if (xhr.status !== 401 && xhr.status !== 404) {
                            util_2.warn('Got unsuccessful REST response for ' +
                                url +
                                ' Status: ' +
                                xhr.status);
                        }
                        callback(xhr.status);
                    }
                    callback = null;
                }
            };
            xhr.open('GET', url, /*asynchronous=*/ true);
            xhr.send();
        });
    };
    return ReadonlyRestClient;
}(ServerActions_1.ServerActions));
exports.ReadonlyRestClient = ReadonlyRestClient;



},{"./ServerActions":21,"./util/util":63,"@firebase/util":92,"tslib":121}],17:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var ServerValues_1 = require("./util/ServerValues");
var nodeFromJSON_1 = require("./snap/nodeFromJSON");
var Path_1 = require("./util/Path");
var SparseSnapshotTree_1 = require("./SparseSnapshotTree");
var SyncTree_1 = require("./SyncTree");
var SnapshotHolder_1 = require("./SnapshotHolder");
var util_1 = require("@firebase/util");
var util_2 = require("./util/util");
var util_3 = require("@firebase/util");
var AuthTokenProvider_1 = require("./AuthTokenProvider");
var StatsManager_1 = require("./stats/StatsManager");
var StatsReporter_1 = require("./stats/StatsReporter");
var StatsListener_1 = require("./stats/StatsListener");
var EventQueue_1 = require("./view/EventQueue");
var PersistentConnection_1 = require("./PersistentConnection");
var ReadonlyRestClient_1 = require("./ReadonlyRestClient");
var Database_1 = require("../api/Database");
var INTERRUPT_REASON = 'repo_interrupt';
/**
 * A connection to a single data repository.
 */
var Repo = /** @class */ (function () {
    /**
     * @param {!RepoInfo} repoInfo_
     * @param {boolean} forceRestClient
     * @param {!FirebaseApp} app
     */
    function Repo(repoInfo_, forceRestClient, app) {
        var _this = this;
        this.repoInfo_ = repoInfo_;
        this.app = app;
        this.dataUpdateCount = 0;
        this.statsListener_ = null;
        this.eventQueue_ = new EventQueue_1.EventQueue();
        this.nextWriteId_ = 1;
        this.interceptServerDataCallback_ = null;
        // A list of data pieces and paths to be set when this client disconnects.
        this.onDisconnect_ = new SparseSnapshotTree_1.SparseSnapshotTree();
        /**
         * TODO: This should be @private but it's used by test_access.js and internal.js
         * @type {?PersistentConnection}
         */
        this.persistentConnection_ = null;
        /** @type {!AuthTokenProvider} */
        var authTokenProvider = new AuthTokenProvider_1.AuthTokenProvider(app);
        this.stats_ = StatsManager_1.StatsManager.getCollection(repoInfo_);
        if (forceRestClient || util_2.beingCrawled()) {
            this.server_ = new ReadonlyRestClient_1.ReadonlyRestClient(this.repoInfo_, this.onDataUpdate_.bind(this), authTokenProvider);
            // Minor hack: Fire onConnect immediately, since there's no actual connection.
            setTimeout(this.onConnectStatus_.bind(this, true), 0);
        }
        else {
            var authOverride = app.options['databaseAuthVariableOverride'];
            // Validate authOverride
            if (typeof authOverride !== 'undefined' && authOverride !== null) {
                if (typeof authOverride !== 'object') {
                    throw new Error('Only objects are supported for option databaseAuthVariableOverride');
                }
                try {
                    util_1.stringify(authOverride);
                }
                catch (e) {
                    throw new Error('Invalid authOverride provided: ' + e);
                }
            }
            this.persistentConnection_ = new PersistentConnection_1.PersistentConnection(this.repoInfo_, this.onDataUpdate_.bind(this), this.onConnectStatus_.bind(this), this.onServerInfoUpdate_.bind(this), authTokenProvider, authOverride);
            this.server_ = this.persistentConnection_;
        }
        authTokenProvider.addTokenChangeListener(function (token) {
            _this.server_.refreshAuthToken(token);
        });
        // In the case of multiple Repos for the same repoInfo (i.e. there are multiple Firebase.Contexts being used),
        // we only want to create one StatsReporter.  As such, we'll report stats over the first Repo created.
        this.statsReporter_ = StatsManager_1.StatsManager.getOrCreateReporter(repoInfo_, function () { return new StatsReporter_1.StatsReporter(_this.stats_, _this.server_); });
        this.transactions_init_();
        // Used for .info.
        this.infoData_ = new SnapshotHolder_1.SnapshotHolder();
        this.infoSyncTree_ = new SyncTree_1.SyncTree({
            startListening: function (query, tag, currentHashFn, onComplete) {
                var infoEvents = [];
                var node = _this.infoData_.getNode(query.path);
                // This is possibly a hack, but we have different semantics for .info endpoints. We don't raise null events
                // on initial data...
                if (!node.isEmpty()) {
                    infoEvents = _this.infoSyncTree_.applyServerOverwrite(query.path, node);
                    setTimeout(function () {
                        onComplete('ok');
                    }, 0);
                }
                return infoEvents;
            },
            stopListening: function () { }
        });
        this.updateInfo_('connected', false);
        this.serverSyncTree_ = new SyncTree_1.SyncTree({
            startListening: function (query, tag, currentHashFn, onComplete) {
                _this.server_.listen(query, currentHashFn, tag, function (status, data) {
                    var events = onComplete(status, data);
                    _this.eventQueue_.raiseEventsForChangedPath(query.path, events);
                });
                // No synchronous events for network-backed sync trees
                return [];
            },
            stopListening: function (query, tag) {
                _this.server_.unlisten(query, tag);
            }
        });
    }
    /**
     * @return {string}  The URL corresponding to the root of this Firebase.
     */
    Repo.prototype.toString = function () {
        return ((this.repoInfo_.secure ? 'https://' : 'http://') + this.repoInfo_.host);
    };
    /**
     * @return {!string} The namespace represented by the repo.
     */
    Repo.prototype.name = function () {
        return this.repoInfo_.namespace;
    };
    /**
     * @return {!number} The time in milliseconds, taking the server offset into account if we have one.
     */
    Repo.prototype.serverTime = function () {
        var offsetNode = this.infoData_.getNode(new Path_1.Path('.info/serverTimeOffset'));
        var offset = offsetNode.val() || 0;
        return new Date().getTime() + offset;
    };
    /**
     * Generate ServerValues using some variables from the repo object.
     * @return {!Object}
     */
    Repo.prototype.generateServerValues = function () {
        return ServerValues_1.generateWithValues({
            timestamp: this.serverTime()
        });
    };
    /**
     * Called by realtime when we get new messages from the server.
     *
     * @private
     * @param {string} pathString
     * @param {*} data
     * @param {boolean} isMerge
     * @param {?number} tag
     */
    Repo.prototype.onDataUpdate_ = function (pathString, data, isMerge, tag) {
        // For testing.
        this.dataUpdateCount++;
        var path = new Path_1.Path(pathString);
        data = this.interceptServerDataCallback_
            ? this.interceptServerDataCallback_(pathString, data)
            : data;
        var events = [];
        if (tag) {
            if (isMerge) {
                var taggedChildren = util_3.map(data, function (raw) {
                    return nodeFromJSON_1.nodeFromJSON(raw);
                });
                events = this.serverSyncTree_.applyTaggedQueryMerge(path, taggedChildren, tag);
            }
            else {
                var taggedSnap = nodeFromJSON_1.nodeFromJSON(data);
                events = this.serverSyncTree_.applyTaggedQueryOverwrite(path, taggedSnap, tag);
            }
        }
        else if (isMerge) {
            var changedChildren = util_3.map(data, function (raw) {
                return nodeFromJSON_1.nodeFromJSON(raw);
            });
            events = this.serverSyncTree_.applyServerMerge(path, changedChildren);
        }
        else {
            var snap = nodeFromJSON_1.nodeFromJSON(data);
            events = this.serverSyncTree_.applyServerOverwrite(path, snap);
        }
        var affectedPath = path;
        if (events.length > 0) {
            // Since we have a listener outstanding for each transaction, receiving any events
            // is a proxy for some change having occurred.
            affectedPath = this.rerunTransactions_(path);
        }
        this.eventQueue_.raiseEventsForChangedPath(affectedPath, events);
    };
    /**
     * TODO: This should be @private but it's used by test_access.js and internal.js
     * @param {?function(!string, *):*} callback
     * @private
     */
    Repo.prototype.interceptServerData_ = function (callback) {
        this.interceptServerDataCallback_ = callback;
    };
    /**
     * @param {!boolean} connectStatus
     * @private
     */
    Repo.prototype.onConnectStatus_ = function (connectStatus) {
        this.updateInfo_('connected', connectStatus);
        if (connectStatus === false) {
            this.runOnDisconnectEvents_();
        }
    };
    /**
     * @param {!Object} updates
     * @private
     */
    Repo.prototype.onServerInfoUpdate_ = function (updates) {
        var _this = this;
        util_2.each(updates, function (value, key) {
            _this.updateInfo_(key, value);
        });
    };
    /**
     *
     * @param {!string} pathString
     * @param {*} value
     * @private
     */
    Repo.prototype.updateInfo_ = function (pathString, value) {
        var path = new Path_1.Path('/.info/' + pathString);
        var newNode = nodeFromJSON_1.nodeFromJSON(value);
        this.infoData_.updateSnapshot(path, newNode);
        var events = this.infoSyncTree_.applyServerOverwrite(path, newNode);
        this.eventQueue_.raiseEventsForChangedPath(path, events);
    };
    /**
     * @return {!number}
     * @private
     */
    Repo.prototype.getNextWriteId_ = function () {
        return this.nextWriteId_++;
    };
    /**
     * @param {!Path} path
     * @param {*} newVal
     * @param {number|string|null} newPriority
     * @param {?function(?Error, *=)} onComplete
     */
    Repo.prototype.setWithPriority = function (path, newVal, newPriority, onComplete) {
        var _this = this;
        this.log_('set', {
            path: path.toString(),
            value: newVal,
            priority: newPriority
        });
        // TODO: Optimize this behavior to either (a) store flag to skip resolving where possible and / or
        // (b) store unresolved paths on JSON parse
        var serverValues = this.generateServerValues();
        var newNodeUnresolved = nodeFromJSON_1.nodeFromJSON(newVal, newPriority);
        var newNode = ServerValues_1.resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);
        var writeId = this.getNextWriteId_();
        var events = this.serverSyncTree_.applyUserOverwrite(path, newNode, writeId, true);
        this.eventQueue_.queueEvents(events);
        this.server_.put(path.toString(), newNodeUnresolved.val(/*export=*/ true), function (status, errorReason) {
            var success = status === 'ok';
            if (!success) {
                util_2.warn('set at ' + path + ' failed: ' + status);
            }
            var clearEvents = _this.serverSyncTree_.ackUserWrite(writeId, !success);
            _this.eventQueue_.raiseEventsForChangedPath(path, clearEvents);
            _this.callOnCompleteCallback(onComplete, status, errorReason);
        });
        var affectedPath = this.abortTransactions_(path);
        this.rerunTransactions_(affectedPath);
        // We queued the events above, so just flush the queue here
        this.eventQueue_.raiseEventsForChangedPath(affectedPath, []);
    };
    /**
     * @param {!Path} path
     * @param {!Object} childrenToMerge
     * @param {?function(?Error, *=)} onComplete
     */
    Repo.prototype.update = function (path, childrenToMerge, onComplete) {
        var _this = this;
        this.log_('update', { path: path.toString(), value: childrenToMerge });
        // Start with our existing data and merge each child into it.
        var empty = true;
        var serverValues = this.generateServerValues();
        var changedChildren = {};
        util_3.forEach(childrenToMerge, function (changedKey, changedValue) {
            empty = false;
            var newNodeUnresolved = nodeFromJSON_1.nodeFromJSON(changedValue);
            changedChildren[changedKey] = ServerValues_1.resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);
        });
        if (!empty) {
            var writeId_1 = this.getNextWriteId_();
            var events = this.serverSyncTree_.applyUserMerge(path, changedChildren, writeId_1);
            this.eventQueue_.queueEvents(events);
            this.server_.merge(path.toString(), childrenToMerge, function (status, errorReason) {
                var success = status === 'ok';
                if (!success) {
                    util_2.warn('update at ' + path + ' failed: ' + status);
                }
                var clearEvents = _this.serverSyncTree_.ackUserWrite(writeId_1, !success);
                var affectedPath = clearEvents.length > 0 ? _this.rerunTransactions_(path) : path;
                _this.eventQueue_.raiseEventsForChangedPath(affectedPath, clearEvents);
                _this.callOnCompleteCallback(onComplete, status, errorReason);
            });
            util_3.forEach(childrenToMerge, function (changedPath) {
                var affectedPath = _this.abortTransactions_(path.child(changedPath));
                _this.rerunTransactions_(affectedPath);
            });
            // We queued the events above, so just flush the queue here
            this.eventQueue_.raiseEventsForChangedPath(path, []);
        }
        else {
            util_2.log("update() called with empty data.  Don't do anything.");
            this.callOnCompleteCallback(onComplete, 'ok');
        }
    };
    /**
     * Applies all of the changes stored up in the onDisconnect_ tree.
     * @private
     */
    Repo.prototype.runOnDisconnectEvents_ = function () {
        var _this = this;
        this.log_('onDisconnectEvents');
        var serverValues = this.generateServerValues();
        var resolvedOnDisconnectTree = ServerValues_1.resolveDeferredValueTree(this.onDisconnect_, serverValues);
        var events = [];
        resolvedOnDisconnectTree.forEachTree(Path_1.Path.Empty, function (path, snap) {
            events = events.concat(_this.serverSyncTree_.applyServerOverwrite(path, snap));
            var affectedPath = _this.abortTransactions_(path);
            _this.rerunTransactions_(affectedPath);
        });
        this.onDisconnect_ = new SparseSnapshotTree_1.SparseSnapshotTree();
        this.eventQueue_.raiseEventsForChangedPath(Path_1.Path.Empty, events);
    };
    /**
     * @param {!Path} path
     * @param {?function(?Error, *=)} onComplete
     */
    Repo.prototype.onDisconnectCancel = function (path, onComplete) {
        var _this = this;
        this.server_.onDisconnectCancel(path.toString(), function (status, errorReason) {
            if (status === 'ok') {
                _this.onDisconnect_.forget(path);
            }
            _this.callOnCompleteCallback(onComplete, status, errorReason);
        });
    };
    /**
     * @param {!Path} path
     * @param {*} value
     * @param {?function(?Error, *=)} onComplete
     */
    Repo.prototype.onDisconnectSet = function (path, value, onComplete) {
        var _this = this;
        var newNode = nodeFromJSON_1.nodeFromJSON(value);
        this.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), function (status, errorReason) {
            if (status === 'ok') {
                _this.onDisconnect_.remember(path, newNode);
            }
            _this.callOnCompleteCallback(onComplete, status, errorReason);
        });
    };
    /**
     * @param {!Path} path
     * @param {*} value
     * @param {*} priority
     * @param {?function(?Error, *=)} onComplete
     */
    Repo.prototype.onDisconnectSetWithPriority = function (path, value, priority, onComplete) {
        var _this = this;
        var newNode = nodeFromJSON_1.nodeFromJSON(value, priority);
        this.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), function (status, errorReason) {
            if (status === 'ok') {
                _this.onDisconnect_.remember(path, newNode);
            }
            _this.callOnCompleteCallback(onComplete, status, errorReason);
        });
    };
    /**
     * @param {!Path} path
     * @param {*} childrenToMerge
     * @param {?function(?Error, *=)} onComplete
     */
    Repo.prototype.onDisconnectUpdate = function (path, childrenToMerge, onComplete) {
        var _this = this;
        if (util_3.isEmpty(childrenToMerge)) {
            util_2.log("onDisconnect().update() called with empty data.  Don't do anything.");
            this.callOnCompleteCallback(onComplete, 'ok');
            return;
        }
        this.server_.onDisconnectMerge(path.toString(), childrenToMerge, function (status, errorReason) {
            if (status === 'ok') {
                util_3.forEach(childrenToMerge, function (childName, childNode) {
                    var newChildNode = nodeFromJSON_1.nodeFromJSON(childNode);
                    _this.onDisconnect_.remember(path.child(childName), newChildNode);
                });
            }
            _this.callOnCompleteCallback(onComplete, status, errorReason);
        });
    };
    /**
     * @param {!Query} query
     * @param {!EventRegistration} eventRegistration
     */
    Repo.prototype.addEventCallbackForQuery = function (query, eventRegistration) {
        var events;
        if (query.path.getFront() === '.info') {
            events = this.infoSyncTree_.addEventRegistration(query, eventRegistration);
        }
        else {
            events = this.serverSyncTree_.addEventRegistration(query, eventRegistration);
        }
        this.eventQueue_.raiseEventsAtPath(query.path, events);
    };
    /**
     * @param {!Query} query
     * @param {?EventRegistration} eventRegistration
     */
    Repo.prototype.removeEventCallbackForQuery = function (query, eventRegistration) {
        // These are guaranteed not to raise events, since we're not passing in a cancelError. However, we can future-proof
        // a little bit by handling the return values anyways.
        var events;
        if (query.path.getFront() === '.info') {
            events = this.infoSyncTree_.removeEventRegistration(query, eventRegistration);
        }
        else {
            events = this.serverSyncTree_.removeEventRegistration(query, eventRegistration);
        }
        this.eventQueue_.raiseEventsAtPath(query.path, events);
    };
    Repo.prototype.interrupt = function () {
        if (this.persistentConnection_) {
            this.persistentConnection_.interrupt(INTERRUPT_REASON);
        }
    };
    Repo.prototype.resume = function () {
        if (this.persistentConnection_) {
            this.persistentConnection_.resume(INTERRUPT_REASON);
        }
    };
    Repo.prototype.stats = function (showDelta) {
        if (showDelta === void 0) { showDelta = false; }
        if (typeof console === 'undefined')
            return;
        var stats;
        if (showDelta) {
            if (!this.statsListener_)
                this.statsListener_ = new StatsListener_1.StatsListener(this.stats_);
            stats = this.statsListener_.get();
        }
        else {
            stats = this.stats_.get();
        }
        var longestName = Object.keys(stats).reduce(function (previousValue, currentValue) {
            return Math.max(currentValue.length, previousValue);
        }, 0);
        util_3.forEach(stats, function (stat, value) {
            // pad stat names to be the same length (plus 2 extra spaces).
            for (var i = stat.length; i < longestName + 2; i++)
                stat += ' ';
            console.log(stat + value);
        });
    };
    Repo.prototype.statsIncrementCounter = function (metric) {
        this.stats_.incrementCounter(metric);
        this.statsReporter_.includeStat(metric);
    };
    /**
     * @param {...*} var_args
     * @private
     */
    Repo.prototype.log_ = function () {
        var var_args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            var_args[_i] = arguments[_i];
        }
        var prefix = '';
        if (this.persistentConnection_) {
            prefix = this.persistentConnection_.id + ':';
        }
        util_2.log.apply(void 0, [prefix].concat(var_args));
    };
    /**
     * @param {?function(?Error, *=)} callback
     * @param {!string} status
     * @param {?string=} errorReason
     */
    Repo.prototype.callOnCompleteCallback = function (callback, status, errorReason) {
        if (callback) {
            util_2.exceptionGuard(function () {
                if (status == 'ok') {
                    callback(null);
                }
                else {
                    var code = (status || 'error').toUpperCase();
                    var message = code;
                    if (errorReason)
                        message += ': ' + errorReason;
                    var error = new Error(message);
                    error.code = code;
                    callback(error);
                }
            });
        }
    };
    Object.defineProperty(Repo.prototype, "database", {
        get: function () {
            return this.__database || (this.__database = new Database_1.Database(this));
        },
        enumerable: true,
        configurable: true
    });
    return Repo;
}());
exports.Repo = Repo;



},{"../api/Database":6,"./AuthTokenProvider":13,"./PersistentConnection":15,"./ReadonlyRestClient":16,"./SnapshotHolder":22,"./SparseSnapshotTree":23,"./SyncTree":25,"./snap/nodeFromJSON":43,"./stats/StatsListener":46,"./stats/StatsManager":47,"./stats/StatsReporter":48,"./util/Path":57,"./util/ServerValues":58,"./util/util":63,"./view/EventQueue":71,"@firebase/util":92}],18:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
var storage_1 = require("./storage/storage");
var Constants_1 = require("../realtime/Constants");
/**
 * A class that holds metadata about a Repo object
 *
 * @constructor
 */
var RepoInfo = /** @class */ (function () {
    /**
     * @param {string} host Hostname portion of the url for the repo
     * @param {boolean} secure Whether or not this repo is accessed over ssl
     * @param {string} namespace The namespace represented by the repo
     * @param {boolean} webSocketOnly Whether to prefer websockets over all other transports (used by Nest).
     * @param {string=} persistenceKey Override the default session persistence storage key
     */
    function RepoInfo(host, secure, namespace, webSocketOnly, persistenceKey) {
        if (persistenceKey === void 0) { persistenceKey = ''; }
        this.secure = secure;
        this.namespace = namespace;
        this.webSocketOnly = webSocketOnly;
        this.persistenceKey = persistenceKey;
        this.host = host.toLowerCase();
        this.domain = this.host.substr(this.host.indexOf('.') + 1);
        this.internalHost = storage_1.PersistentStorage.get('host:' + host) || this.host;
    }
    RepoInfo.prototype.needsQueryParam = function () {
        return this.host !== this.internalHost || this.isCustomHost();
    };
    RepoInfo.prototype.isCacheableHost = function () {
        return this.internalHost.substr(0, 2) === 's-';
    };
    RepoInfo.prototype.isDemoHost = function () {
        return this.domain === 'firebaseio-demo.com';
    };
    RepoInfo.prototype.isCustomHost = function () {
        return (this.domain !== 'firebaseio.com' && this.domain !== 'firebaseio-demo.com');
    };
    RepoInfo.prototype.updateHost = function (newHost) {
        if (newHost !== this.internalHost) {
            this.internalHost = newHost;
            if (this.isCacheableHost()) {
                storage_1.PersistentStorage.set('host:' + this.host, this.internalHost);
            }
        }
    };
    /**
     * Returns the websocket URL for this repo
     * @param {string} type of connection
     * @param {Object} params list
     * @return {string} The URL for this repo
     */
    RepoInfo.prototype.connectionURL = function (type, params) {
        util_1.assert(typeof type === 'string', 'typeof type must == string');
        util_1.assert(typeof params === 'object', 'typeof params must == object');
        var connURL;
        if (type === Constants_1.WEBSOCKET) {
            connURL =
                (this.secure ? 'wss://' : 'ws://') + this.internalHost + '/.ws?';
        }
        else if (type === Constants_1.LONG_POLLING) {
            connURL =
                (this.secure ? 'https://' : 'http://') + this.internalHost + '/.lp?';
        }
        else {
            throw new Error('Unknown connection type: ' + type);
        }
        if (this.needsQueryParam()) {
            params['ns'] = this.namespace;
        }
        var pairs = [];
        util_2.forEach(params, function (key, value) {
            pairs.push(key + '=' + value);
        });
        return connURL + pairs.join('&');
    };
    /** @return {string} */
    RepoInfo.prototype.toString = function () {
        var str = this.toURLString();
        if (this.persistenceKey) {
            str += '<' + this.persistenceKey + '>';
        }
        return str;
    };
    /** @return {string} */
    RepoInfo.prototype.toURLString = function () {
        return (this.secure ? 'https://' : 'http://') + this.host;
    };
    return RepoInfo;
}());
exports.RepoInfo = RepoInfo;



},{"../realtime/Constants":82,"./storage/storage":51,"@firebase/util":92}],19:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var Repo_1 = require("./Repo");
var util_2 = require("./util/util");
var parser_1 = require("./util/libs/parser");
var validation_1 = require("./util/validation");
require("./Repo_transaction");
/** @const {string} */
var DATABASE_URL_OPTION = 'databaseURL';
var _staticInstance;
/**
 * Creates and caches Repo instances.
 */
var RepoManager = /** @class */ (function () {
    function RepoManager() {
        /**
         * @private {!Object.<string, Object<string, !fb.core.Repo>>}
         */
        this.repos_ = {};
        /**
         * If true, new Repos will be created to use ReadonlyRestClient (for testing purposes).
         * @private {boolean}
         */
        this.useRestClient_ = false;
    }
    RepoManager.getInstance = function () {
        if (!_staticInstance) {
            _staticInstance = new RepoManager();
        }
        return _staticInstance;
    };
    // TODO(koss): Remove these functions unless used in tests?
    RepoManager.prototype.interrupt = function () {
        for (var appName in this.repos_) {
            for (var dbUrl in this.repos_[appName]) {
                this.repos_[appName][dbUrl].interrupt();
            }
        }
    };
    RepoManager.prototype.resume = function () {
        for (var appName in this.repos_) {
            for (var dbUrl in this.repos_[appName]) {
                this.repos_[appName][dbUrl].resume();
            }
        }
    };
    /**
     * This function should only ever be called to CREATE a new database instance.
     *
     * @param {!FirebaseApp} app
     * @return {!Database}
     */
    RepoManager.prototype.databaseFromApp = function (app, url) {
        var dbUrl = url || app.options[DATABASE_URL_OPTION];
        if (dbUrl === undefined) {
            util_2.fatal("Can't determine Firebase Database URL.  Be sure to include " +
                DATABASE_URL_OPTION +
                ' option when calling firebase.initializeApp().');
        }
        var parsedUrl = parser_1.parseRepoInfo(dbUrl);
        var repoInfo = parsedUrl.repoInfo;
        validation_1.validateUrl('Invalid Firebase Database URL', 1, parsedUrl);
        if (!parsedUrl.path.isEmpty()) {
            util_2.fatal('Database URL must point to the root of a Firebase Database ' +
                '(not including a child path).');
        }
        var repo = this.createRepo(repoInfo, app);
        return repo.database;
    };
    /**
     * Remove the repo and make sure it is disconnected.
     *
     * @param {!Repo} repo
     */
    RepoManager.prototype.deleteRepo = function (repo) {
        var appRepos = util_1.safeGet(this.repos_, repo.app.name);
        // This should never happen...
        if (!appRepos || util_1.safeGet(appRepos, repo.repoInfo_.toURLString()) !== repo) {
            util_2.fatal("Database " + repo.app.name + "(" + repo.repoInfo_ + ") has already been deleted.");
        }
        repo.interrupt();
        delete appRepos[repo.repoInfo_.toURLString()];
    };
    /**
     * Ensures a repo doesn't already exist and then creates one using the
     * provided app.
     *
     * @param {!RepoInfo} repoInfo The metadata about the Repo
     * @param {!FirebaseApp} app
     * @return {!Repo} The Repo object for the specified server / repoName.
     */
    RepoManager.prototype.createRepo = function (repoInfo, app) {
        var appRepos = util_1.safeGet(this.repos_, app.name);
        if (!appRepos) {
            appRepos = {};
            this.repos_[app.name] = appRepos;
        }
        var repo = util_1.safeGet(appRepos, repoInfo.toURLString());
        if (repo) {
            util_2.fatal('Database initialized multiple times. Please make sure the format of the database URL matches with each database() call.');
        }
        repo = new Repo_1.Repo(repoInfo, this.useRestClient_, app);
        appRepos[repoInfo.toURLString()] = repo;
        return repo;
    };
    /**
     * Forces us to use ReadonlyRestClient instead of PersistentConnection for new Repos.
     * @param {boolean} forceRestClient
     */
    RepoManager.prototype.forceRestClient = function (forceRestClient) {
        this.useRestClient_ = forceRestClient;
    };
    return RepoManager;
}());
exports.RepoManager = RepoManager;



},{"./Repo":17,"./Repo_transaction":20,"./util/libs/parser":62,"./util/util":63,"./util/validation":64,"@firebase/util":92}],20:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var Reference_1 = require("../api/Reference");
var DataSnapshot_1 = require("../api/DataSnapshot");
var Path_1 = require("./util/Path");
var Tree_1 = require("./util/Tree");
var PriorityIndex_1 = require("./snap/indexes/PriorityIndex");
var util_2 = require("./util/util");
var ServerValues_1 = require("./util/ServerValues");
var validation_1 = require("./util/validation");
var util_3 = require("@firebase/util");
var nodeFromJSON_1 = require("./snap/nodeFromJSON");
var ChildrenNode_1 = require("./snap/ChildrenNode");
var Repo_1 = require("./Repo");
// TODO: This is pretty messy.  Ideally, a lot of this would move into FirebaseData, or a transaction-specific
// component used by FirebaseData, but it has ties to user callbacks (transaction update and onComplete) as well
// as the realtime connection (to send transactions to the server).  So that all needs to be decoupled first.
// For now it's part of Repo, but in its own file.
/**
 * @enum {number}
 */
var TransactionStatus;
(function (TransactionStatus) {
    // We've run the transaction and updated transactionResultData_ with the result, but it isn't currently sent to the
    // server. A transaction will go from RUN -> SENT -> RUN if it comes back from the server as rejected due to
    // mismatched hash.
    TransactionStatus[TransactionStatus["RUN"] = 0] = "RUN";
    // We've run the transaction and sent it to the server and it's currently outstanding (hasn't come back as accepted
    // or rejected yet).
    TransactionStatus[TransactionStatus["SENT"] = 1] = "SENT";
    // Temporary state used to mark completed transactions (whether successful or aborted).  The transaction will be
    // removed when we get a chance to prune completed ones.
    TransactionStatus[TransactionStatus["COMPLETED"] = 2] = "COMPLETED";
    // Used when an already-sent transaction needs to be aborted (e.g. due to a conflicting set() call that was made).
    // If it comes back as unsuccessful, we'll abort it.
    TransactionStatus[TransactionStatus["SENT_NEEDS_ABORT"] = 3] = "SENT_NEEDS_ABORT";
    // Temporary state used to mark transactions that need to be aborted.
    TransactionStatus[TransactionStatus["NEEDS_ABORT"] = 4] = "NEEDS_ABORT";
})(TransactionStatus = exports.TransactionStatus || (exports.TransactionStatus = {}));
/**
 * If a transaction does not succeed after 25 retries, we abort it.  Among other things this ensure that if there's
 * ever a bug causing a mismatch between client / server hashes for some data, we won't retry indefinitely.
 * @type {number}
 * @const
 * @private
 */
Repo_1.Repo.MAX_TRANSACTION_RETRIES_ = 25;
/**
 * Setup the transaction data structures
 * @private
 */
Repo_1.Repo.prototype.transactions_init_ = function () {
    /**
     * Stores queues of outstanding transactions for Firebase locations.
     *
     * @type {!Tree.<Array.<!Transaction>>}
     * @private
     */
    this.transactionQueueTree_ = new Tree_1.Tree();
};
/**
 * Creates a new transaction, adds it to the transactions we're tracking, and sends it to the server if possible.
 *
 * @param {!Path} path Path at which to do transaction.
 * @param {function(*):*} transactionUpdate Update callback.
 * @param {?function(?Error, boolean, ?DataSnapshot)} onComplete Completion callback.
 * @param {boolean} applyLocally Whether or not to make intermediate results visible
 */
Repo_1.Repo.prototype.startTransaction = function (path, transactionUpdate, onComplete, applyLocally) {
    this.log_('transaction on ' + path);
    // Add a watch to make sure we get server updates.
    var valueCallback = function () { };
    var watchRef = new Reference_1.Reference(this, path);
    watchRef.on('value', valueCallback);
    var unwatcher = function () {
        watchRef.off('value', valueCallback);
    };
    // Initialize transaction.
    var transaction = {
        path: path,
        update: transactionUpdate,
        onComplete: onComplete,
        // One of TransactionStatus enums.
        status: null,
        // Used when combining transactions at different locations to figure out which one goes first.
        order: util_2.LUIDGenerator(),
        // Whether to raise local events for this transaction.
        applyLocally: applyLocally,
        // Count of how many times we've retried the transaction.
        retryCount: 0,
        // Function to call to clean up our .on() listener.
        unwatcher: unwatcher,
        // Stores why a transaction was aborted.
        abortReason: null,
        currentWriteId: null,
        currentInputSnapshot: null,
        currentOutputSnapshotRaw: null,
        currentOutputSnapshotResolved: null
    };
    // Run transaction initially.
    var currentState = this.getLatestState_(path);
    transaction.currentInputSnapshot = currentState;
    var newVal = transaction.update(currentState.val());
    if (newVal === undefined) {
        // Abort transaction.
        transaction.unwatcher();
        transaction.currentOutputSnapshotRaw = null;
        transaction.currentOutputSnapshotResolved = null;
        if (transaction.onComplete) {
            // We just set the input snapshot, so this cast should be safe
            var snapshot = new DataSnapshot_1.DataSnapshot(transaction.currentInputSnapshot, new Reference_1.Reference(this, transaction.path), PriorityIndex_1.PRIORITY_INDEX);
            transaction.onComplete(null, false, snapshot);
        }
    }
    else {
        validation_1.validateFirebaseData('transaction failed: Data returned ', newVal, transaction.path);
        // Mark as run and add to our queue.
        transaction.status = TransactionStatus.RUN;
        var queueNode = this.transactionQueueTree_.subTree(path);
        var nodeQueue = queueNode.getValue() || [];
        nodeQueue.push(transaction);
        queueNode.setValue(nodeQueue);
        // Update visibleData and raise events
        // Note: We intentionally raise events after updating all of our transaction state, since the user could
        // start new transactions from the event callbacks.
        var priorityForNode = void 0;
        if (typeof newVal === 'object' &&
            newVal !== null &&
            util_3.contains(newVal, '.priority')) {
            priorityForNode = util_3.safeGet(newVal, '.priority');
            util_1.assert(validation_1.isValidPriority(priorityForNode), 'Invalid priority returned by transaction. ' +
                'Priority must be a valid string, finite number, server value, or null.');
        }
        else {
            var currentNode = this.serverSyncTree_.calcCompleteEventCache(path) ||
                ChildrenNode_1.ChildrenNode.EMPTY_NODE;
            priorityForNode = currentNode.getPriority().val();
        }
        priorityForNode /** @type {null|number|string} */ = priorityForNode;
        var serverValues = this.generateServerValues();
        var newNodeUnresolved = nodeFromJSON_1.nodeFromJSON(newVal, priorityForNode);
        var newNode = ServerValues_1.resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);
        transaction.currentOutputSnapshotRaw = newNodeUnresolved;
        transaction.currentOutputSnapshotResolved = newNode;
        transaction.currentWriteId = this.getNextWriteId_();
        var events = this.serverSyncTree_.applyUserOverwrite(path, newNode, transaction.currentWriteId, transaction.applyLocally);
        this.eventQueue_.raiseEventsForChangedPath(path, events);
        this.sendReadyTransactions_();
    }
};
/**
 * @param {!Path} path
 * @param {Array.<number>=} excludeSets A specific set to exclude
 * @return {Node}
 * @private
 */
Repo_1.Repo.prototype.getLatestState_ = function (path, excludeSets) {
    return (this.serverSyncTree_.calcCompleteEventCache(path, excludeSets) ||
        ChildrenNode_1.ChildrenNode.EMPTY_NODE);
};
/**
 * Sends any already-run transactions that aren't waiting for outstanding transactions to
 * complete.
 *
 * Externally it's called with no arguments, but it calls itself recursively with a particular
 * transactionQueueTree node to recurse through the tree.
 *
 * @param {Tree.<Array.<Transaction>>=} node  transactionQueueTree node to start at.
 * @private
 */
Repo_1.Repo.prototype.sendReadyTransactions_ = function (node) {
    var _this = this;
    if (node === void 0) { node = this.transactionQueueTree_; }
    // Before recursing, make sure any completed transactions are removed.
    if (!node) {
        this.pruneCompletedTransactionsBelowNode_(node);
    }
    if (node.getValue() !== null) {
        var queue = this.buildTransactionQueue_(node);
        util_1.assert(queue.length > 0, 'Sending zero length transaction queue');
        var allRun = queue.every(function (transaction) { return transaction.status === TransactionStatus.RUN; });
        // If they're all run (and not sent), we can send them.  Else, we must wait.
        if (allRun) {
            this.sendTransactionQueue_(node.path(), queue);
        }
    }
    else if (node.hasChildren()) {
        node.forEachChild(function (childNode) {
            _this.sendReadyTransactions_(childNode);
        });
    }
};
/**
 * Given a list of run transactions, send them to the server and then handle the result (success or failure).
 *
 * @param {!Path} path The location of the queue.
 * @param {!Array.<Transaction>} queue Queue of transactions under the specified location.
 * @private
 */
Repo_1.Repo.prototype.sendTransactionQueue_ = function (path, queue) {
    var _this = this;
    // Mark transactions as sent and increment retry count!
    var setsToIgnore = queue.map(function (txn) {
        return txn.currentWriteId;
    });
    var latestState = this.getLatestState_(path, setsToIgnore);
    var snapToSend = latestState;
    var latestHash = latestState.hash();
    for (var i = 0; i < queue.length; i++) {
        var txn = queue[i];
        util_1.assert(txn.status === TransactionStatus.RUN, 'tryToSendTransactionQueue_: items in queue should all be run.');
        txn.status = TransactionStatus.SENT;
        txn.retryCount++;
        var relativePath = Path_1.Path.relativePath(path, txn.path);
        // If we've gotten to this point, the output snapshot must be defined.
        snapToSend = snapToSend.updateChild(relativePath /**@type {!Node} */, txn.currentOutputSnapshotRaw);
    }
    var dataToSend = snapToSend.val(true);
    var pathToSend = path;
    // Send the put.
    this.server_.put(pathToSend.toString(), dataToSend, function (status) {
        _this.log_('transaction put response', {
            path: pathToSend.toString(),
            status: status
        });
        var events = [];
        if (status === 'ok') {
            // Queue up the callbacks and fire them after cleaning up all of our transaction state, since
            // the callback could trigger more transactions or sets.
            var callbacks = [];
            for (var i = 0; i < queue.length; i++) {
                queue[i].status = TransactionStatus.COMPLETED;
                events = events.concat(_this.serverSyncTree_.ackUserWrite(queue[i].currentWriteId));
                if (queue[i].onComplete) {
                    // We never unset the output snapshot, and given that this transaction is complete, it should be set
                    var node = queue[i].currentOutputSnapshotResolved;
                    var ref = new Reference_1.Reference(_this, queue[i].path);
                    var snapshot = new DataSnapshot_1.DataSnapshot(node, ref, PriorityIndex_1.PRIORITY_INDEX);
                    callbacks.push(queue[i].onComplete.bind(null, null, true, snapshot));
                }
                queue[i].unwatcher();
            }
            // Now remove the completed transactions.
            _this.pruneCompletedTransactionsBelowNode_(_this.transactionQueueTree_.subTree(path));
            // There may be pending transactions that we can now send.
            _this.sendReadyTransactions_();
            _this.eventQueue_.raiseEventsForChangedPath(path, events);
            // Finally, trigger onComplete callbacks.
            for (var i = 0; i < callbacks.length; i++) {
                util_2.exceptionGuard(callbacks[i]);
            }
        }
        else {
            // transactions are no longer sent.  Update their status appropriately.
            if (status === 'datastale') {
                for (var i = 0; i < queue.length; i++) {
                    if (queue[i].status === TransactionStatus.SENT_NEEDS_ABORT)
                        queue[i].status = TransactionStatus.NEEDS_ABORT;
                    else
                        queue[i].status = TransactionStatus.RUN;
                }
            }
            else {
                util_2.warn('transaction at ' + pathToSend.toString() + ' failed: ' + status);
                for (var i = 0; i < queue.length; i++) {
                    queue[i].status = TransactionStatus.NEEDS_ABORT;
                    queue[i].abortReason = status;
                }
            }
            _this.rerunTransactions_(path);
        }
    }, latestHash);
};
/**
 * Finds all transactions dependent on the data at changedPath and reruns them.
 *
 * Should be called any time cached data changes.
 *
 * Return the highest path that was affected by rerunning transactions.  This is the path at which events need to
 * be raised for.
 *
 * @param {!Path} changedPath The path in mergedData that changed.
 * @return {!Path} The rootmost path that was affected by rerunning transactions.
 * @private
 */
Repo_1.Repo.prototype.rerunTransactions_ = function (changedPath) {
    var rootMostTransactionNode = this.getAncestorTransactionNode_(changedPath);
    var path = rootMostTransactionNode.path();
    var queue = this.buildTransactionQueue_(rootMostTransactionNode);
    this.rerunTransactionQueue_(queue, path);
    return path;
};
/**
 * Does all the work of rerunning transactions (as well as cleans up aborted transactions and whatnot).
 *
 * @param {Array.<Transaction>} queue The queue of transactions to run.
 * @param {!Path} path The path the queue is for.
 * @private
 */
Repo_1.Repo.prototype.rerunTransactionQueue_ = function (queue, path) {
    if (queue.length === 0) {
        return; // Nothing to do!
    }
    // Queue up the callbacks and fire them after cleaning up all of our transaction state, since
    // the callback could trigger more transactions or sets.
    var callbacks = [];
    var events = [];
    // Ignore all of the sets we're going to re-run.
    var txnsToRerun = queue.filter(function (q) {
        return q.status === TransactionStatus.RUN;
    });
    var setsToIgnore = txnsToRerun.map(function (q) {
        return q.currentWriteId;
    });
    for (var i = 0; i < queue.length; i++) {
        var transaction = queue[i];
        var relativePath = Path_1.Path.relativePath(path, transaction.path);
        var abortTransaction = false, abortReason = void 0;
        util_1.assert(relativePath !== null, 'rerunTransactionsUnderNode_: relativePath should not be null.');
        if (transaction.status === TransactionStatus.NEEDS_ABORT) {
            abortTransaction = true;
            abortReason = transaction.abortReason;
            events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));
        }
        else if (transaction.status === TransactionStatus.RUN) {
            if (transaction.retryCount >= Repo_1.Repo.MAX_TRANSACTION_RETRIES_) {
                abortTransaction = true;
                abortReason = 'maxretry';
                events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));
            }
            else {
                // This code reruns a transaction
                var currentNode = this.getLatestState_(transaction.path, setsToIgnore);
                transaction.currentInputSnapshot = currentNode;
                var newData = queue[i].update(currentNode.val());
                if (newData !== undefined) {
                    validation_1.validateFirebaseData('transaction failed: Data returned ', newData, transaction.path);
                    var newDataNode = nodeFromJSON_1.nodeFromJSON(newData);
                    var hasExplicitPriority = typeof newData === 'object' &&
                        newData != null &&
                        util_3.contains(newData, '.priority');
                    if (!hasExplicitPriority) {
                        // Keep the old priority if there wasn't a priority explicitly specified.
                        newDataNode = newDataNode.updatePriority(currentNode.getPriority());
                    }
                    var oldWriteId = transaction.currentWriteId;
                    var serverValues = this.generateServerValues();
                    var newNodeResolved = ServerValues_1.resolveDeferredValueSnapshot(newDataNode, serverValues);
                    transaction.currentOutputSnapshotRaw = newDataNode;
                    transaction.currentOutputSnapshotResolved = newNodeResolved;
                    transaction.currentWriteId = this.getNextWriteId_();
                    // Mutates setsToIgnore in place
                    setsToIgnore.splice(setsToIgnore.indexOf(oldWriteId), 1);
                    events = events.concat(this.serverSyncTree_.applyUserOverwrite(transaction.path, newNodeResolved, transaction.currentWriteId, transaction.applyLocally));
                    events = events.concat(this.serverSyncTree_.ackUserWrite(oldWriteId, true));
                }
                else {
                    abortTransaction = true;
                    abortReason = 'nodata';
                    events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));
                }
            }
        }
        this.eventQueue_.raiseEventsForChangedPath(path, events);
        events = [];
        if (abortTransaction) {
            // Abort.
            queue[i].status = TransactionStatus.COMPLETED;
            // Removing a listener can trigger pruning which can muck with mergedData/visibleData (as it prunes data).
            // So defer the unwatcher until we're done.
            (function (unwatcher) {
                setTimeout(unwatcher, Math.floor(0));
            })(queue[i].unwatcher);
            if (queue[i].onComplete) {
                if (abortReason === 'nodata') {
                    var ref = new Reference_1.Reference(this, queue[i].path);
                    // We set this field immediately, so it's safe to cast to an actual snapshot
                    var lastInput /** @type {!Node} */ = queue[i].currentInputSnapshot;
                    var snapshot = new DataSnapshot_1.DataSnapshot(lastInput, ref, PriorityIndex_1.PRIORITY_INDEX);
                    callbacks.push(queue[i].onComplete.bind(null, null, false, snapshot));
                }
                else {
                    callbacks.push(queue[i].onComplete.bind(null, new Error(abortReason), false, null));
                }
            }
        }
    }
    // Clean up completed transactions.
    this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);
    // Now fire callbacks, now that we're in a good, known state.
    for (var i = 0; i < callbacks.length; i++) {
        util_2.exceptionGuard(callbacks[i]);
    }
    // Try to send the transaction result to the server.
    this.sendReadyTransactions_();
};
/**
 * Returns the rootmost ancestor node of the specified path that has a pending transaction on it, or just returns
 * the node for the given path if there are no pending transactions on any ancestor.
 *
 * @param {!Path} path The location to start at.
 * @return {!Tree.<Array.<!Transaction>>} The rootmost node with a transaction.
 * @private
 */
Repo_1.Repo.prototype.getAncestorTransactionNode_ = function (path) {
    var front;
    // Start at the root and walk deeper into the tree towards path until we find a node with pending transactions.
    var transactionNode = this.transactionQueueTree_;
    while ((front = path.getFront()) !== null &&
        transactionNode.getValue() === null) {
        transactionNode = transactionNode.subTree(front);
        path = path.popFront();
    }
    return transactionNode;
};
/**
 * Builds the queue of all transactions at or below the specified transactionNode.
 *
 * @param {!Tree.<Array.<Transaction>>} transactionNode
 * @return {Array.<Transaction>} The generated queue.
 * @private
 */
Repo_1.Repo.prototype.buildTransactionQueue_ = function (transactionNode) {
    // Walk any child transaction queues and aggregate them into a single queue.
    var transactionQueue = [];
    this.aggregateTransactionQueuesForNode_(transactionNode, transactionQueue);
    // Sort them by the order the transactions were created.
    transactionQueue.sort(function (a, b) {
        return a.order - b.order;
    });
    return transactionQueue;
};
/**
 * @param {!Tree.<Array.<Transaction>>} node
 * @param {Array.<Transaction>} queue
 * @private
 */
Repo_1.Repo.prototype.aggregateTransactionQueuesForNode_ = function (node, queue) {
    var _this = this;
    var nodeQueue = node.getValue();
    if (nodeQueue !== null) {
        for (var i = 0; i < nodeQueue.length; i++) {
            queue.push(nodeQueue[i]);
        }
    }
    node.forEachChild(function (child) {
        _this.aggregateTransactionQueuesForNode_(child, queue);
    });
};
/**
 * Remove COMPLETED transactions at or below this node in the transactionQueueTree_.
 *
 * @param {!Tree.<Array.<!Transaction>>} node
 * @private
 */
Repo_1.Repo.prototype.pruneCompletedTransactionsBelowNode_ = function (node) {
    var _this = this;
    var queue = node.getValue();
    if (queue) {
        var to = 0;
        for (var from = 0; from < queue.length; from++) {
            if (queue[from].status !== TransactionStatus.COMPLETED) {
                queue[to] = queue[from];
                to++;
            }
        }
        queue.length = to;
        node.setValue(queue.length > 0 ? queue : null);
    }
    node.forEachChild(function (childNode) {
        _this.pruneCompletedTransactionsBelowNode_(childNode);
    });
};
/**
 * Aborts all transactions on ancestors or descendants of the specified path.  Called when doing a set() or update()
 * since we consider them incompatible with transactions.
 *
 * @param {!Path} path Path for which we want to abort related transactions.
 * @return {!Path}
 * @private
 */
Repo_1.Repo.prototype.abortTransactions_ = function (path) {
    var _this = this;
    var affectedPath = this.getAncestorTransactionNode_(path).path();
    var transactionNode = this.transactionQueueTree_.subTree(path);
    transactionNode.forEachAncestor(function (node) {
        _this.abortTransactionsOnNode_(node);
    });
    this.abortTransactionsOnNode_(transactionNode);
    transactionNode.forEachDescendant(function (node) {
        _this.abortTransactionsOnNode_(node);
    });
    return affectedPath;
};
/**
 * Abort transactions stored in this transaction queue node.
 *
 * @param {!Tree.<Array.<Transaction>>} node Node to abort transactions for.
 * @private
 */
Repo_1.Repo.prototype.abortTransactionsOnNode_ = function (node) {
    var queue = node.getValue();
    if (queue !== null) {
        // Queue up the callbacks and fire them after cleaning up all of our transaction state, since
        // the callback could trigger more transactions or sets.
        var callbacks = [];
        // Go through queue.  Any already-sent transactions must be marked for abort, while the unsent ones
        // can be immediately aborted and removed.
        var events = [];
        var lastSent = -1;
        for (var i = 0; i < queue.length; i++) {
            if (queue[i].status === TransactionStatus.SENT_NEEDS_ABORT) {
                // Already marked.  No action needed.
            }
            else if (queue[i].status === TransactionStatus.SENT) {
                util_1.assert(lastSent === i - 1, 'All SENT items should be at beginning of queue.');
                lastSent = i;
                // Mark transaction for abort when it comes back.
                queue[i].status = TransactionStatus.SENT_NEEDS_ABORT;
                queue[i].abortReason = 'set';
            }
            else {
                util_1.assert(queue[i].status === TransactionStatus.RUN, 'Unexpected transaction status in abort');
                // We can abort it immediately.
                queue[i].unwatcher();
                events = events.concat(this.serverSyncTree_.ackUserWrite(queue[i].currentWriteId, true));
                if (queue[i].onComplete) {
                    var snapshot = null;
                    callbacks.push(queue[i].onComplete.bind(null, new Error('set'), false, snapshot));
                }
            }
        }
        if (lastSent === -1) {
            // We're not waiting for any sent transactions.  We can clear the queue.
            node.setValue(null);
        }
        else {
            // Remove the transactions we aborted.
            queue.length = lastSent + 1;
        }
        // Now fire the callbacks.
        this.eventQueue_.raiseEventsForChangedPath(node.path(), events);
        for (var i = 0; i < callbacks.length; i++) {
            util_2.exceptionGuard(callbacks[i]);
        }
    }
};



},{"../api/DataSnapshot":5,"../api/Reference":8,"./Repo":17,"./snap/ChildrenNode":32,"./snap/indexes/PriorityIndex":41,"./snap/nodeFromJSON":43,"./util/Path":57,"./util/ServerValues":58,"./util/Tree":60,"./util/util":63,"./util/validation":64,"@firebase/util":92}],21:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Interface defining the set of actions that can be performed against the Firebase server
 * (basically corresponds to our wire protocol).
 *
 * @interface
 */
var ServerActions = /** @class */ (function () {
    function ServerActions() {
    }
    /**
     * @param {string} pathString
     * @param {*} data
     * @param {function(string, string)=} onComplete
     * @param {string=} hash
     */
    ServerActions.prototype.put = function (pathString, data, onComplete, hash) { };
    /**
     * @param {string} pathString
     * @param {*} data
     * @param {function(string, ?string)} onComplete
     * @param {string=} hash
     */
    ServerActions.prototype.merge = function (pathString, data, onComplete, hash) { };
    /**
     * Refreshes the auth token for the current connection.
     * @param {string} token The authentication token
     */
    ServerActions.prototype.refreshAuthToken = function (token) { };
    /**
     * @param {string} pathString
     * @param {*} data
     * @param {function(string, string)=} onComplete
     */
    ServerActions.prototype.onDisconnectPut = function (pathString, data, onComplete) { };
    /**
     * @param {string} pathString
     * @param {*} data
     * @param {function(string, string)=} onComplete
     */
    ServerActions.prototype.onDisconnectMerge = function (pathString, data, onComplete) { };
    /**
     * @param {string} pathString
     * @param {function(string, string)=} onComplete
     */
    ServerActions.prototype.onDisconnectCancel = function (pathString, onComplete) { };
    /**
     * @param {Object.<string, *>} stats
     */
    ServerActions.prototype.reportStats = function (stats) { };
    return ServerActions;
}());
exports.ServerActions = ServerActions;



},{}],22:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var ChildrenNode_1 = require("./snap/ChildrenNode");
/**
 * Mutable object which basically just stores a reference to the "latest" immutable snapshot.
 *
 * @constructor
 */
var SnapshotHolder = /** @class */ (function () {
    function SnapshotHolder() {
        this.rootNode_ = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
    }
    SnapshotHolder.prototype.getNode = function (path) {
        return this.rootNode_.getChild(path);
    };
    SnapshotHolder.prototype.updateSnapshot = function (path, newSnapshotNode) {
        this.rootNode_ = this.rootNode_.updateChild(path, newSnapshotNode);
    };
    return SnapshotHolder;
}());
exports.SnapshotHolder = SnapshotHolder;



},{"./snap/ChildrenNode":32}],23:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Path_1 = require("./util/Path");
var PriorityIndex_1 = require("./snap/indexes/PriorityIndex");
var CountedSet_1 = require("./util/CountedSet");
/**
 * Helper class to store a sparse set of snapshots.
 *
 * @constructor
 */
var SparseSnapshotTree = /** @class */ (function () {
    function SparseSnapshotTree() {
        /**
         * @private
         * @type {Node}
         */
        this.value_ = null;
        /**
         * @private
         * @type {CountedSet}
         */
        this.children_ = null;
    }
    /**
     * Gets the node stored at the given path if one exists.
     *
     * @param {!Path} path Path to look up snapshot for.
     * @return {?Node} The retrieved node, or null.
     */
    SparseSnapshotTree.prototype.find = function (path) {
        if (this.value_ != null) {
            return this.value_.getChild(path);
        }
        else if (!path.isEmpty() && this.children_ != null) {
            var childKey = path.getFront();
            path = path.popFront();
            if (this.children_.contains(childKey)) {
                var childTree = this.children_.get(childKey);
                return childTree.find(path);
            }
            else {
                return null;
            }
        }
        else {
            return null;
        }
    };
    /**
     * Stores the given node at the specified path. If there is already a node
     * at a shallower path, it merges the new data into that snapshot node.
     *
     * @param {!Path} path Path to look up snapshot for.
     * @param {!Node} data The new data, or null.
     */
    SparseSnapshotTree.prototype.remember = function (path, data) {
        if (path.isEmpty()) {
            this.value_ = data;
            this.children_ = null;
        }
        else if (this.value_ !== null) {
            this.value_ = this.value_.updateChild(path, data);
        }
        else {
            if (this.children_ == null) {
                this.children_ = new CountedSet_1.CountedSet();
            }
            var childKey = path.getFront();
            if (!this.children_.contains(childKey)) {
                this.children_.add(childKey, new SparseSnapshotTree());
            }
            var child = this.children_.get(childKey);
            path = path.popFront();
            child.remember(path, data);
        }
    };
    /**
     * Purge the data at path from the cache.
     *
     * @param {!Path} path Path to look up snapshot for.
     * @return {boolean} True if this node should now be removed.
     */
    SparseSnapshotTree.prototype.forget = function (path) {
        if (path.isEmpty()) {
            this.value_ = null;
            this.children_ = null;
            return true;
        }
        else {
            if (this.value_ !== null) {
                if (this.value_.isLeafNode()) {
                    // We're trying to forget a node that doesn't exist
                    return false;
                }
                else {
                    var value = this.value_;
                    this.value_ = null;
                    var self_1 = this;
                    value.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (key, tree) {
                        self_1.remember(new Path_1.Path(key), tree);
                    });
                    return this.forget(path);
                }
            }
            else if (this.children_ !== null) {
                var childKey = path.getFront();
                path = path.popFront();
                if (this.children_.contains(childKey)) {
                    var safeToRemove = this.children_.get(childKey).forget(path);
                    if (safeToRemove) {
                        this.children_.remove(childKey);
                    }
                }
                if (this.children_.isEmpty()) {
                    this.children_ = null;
                    return true;
                }
                else {
                    return false;
                }
            }
            else {
                return true;
            }
        }
    };
    /**
     * Recursively iterates through all of the stored tree and calls the
     * callback on each one.
     *
     * @param {!Path} prefixPath Path to look up node for.
     * @param {!Function} func The function to invoke for each tree.
     */
    SparseSnapshotTree.prototype.forEachTree = function (prefixPath, func) {
        if (this.value_ !== null) {
            func(prefixPath, this.value_);
        }
        else {
            this.forEachChild(function (key, tree) {
                var path = new Path_1.Path(prefixPath.toString() + '/' + key);
                tree.forEachTree(path, func);
            });
        }
    };
    /**
     * Iterates through each immediate child and triggers the callback.
     *
     * @param {!Function} func The function to invoke for each child.
     */
    SparseSnapshotTree.prototype.forEachChild = function (func) {
        if (this.children_ !== null) {
            this.children_.each(function (key, tree) {
                func(key, tree);
            });
        }
    };
    return SparseSnapshotTree;
}());
exports.SparseSnapshotTree = SparseSnapshotTree;



},{"./snap/indexes/PriorityIndex":41,"./util/CountedSet":52,"./util/Path":57}],24:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var CacheNode_1 = require("./view/CacheNode");
var ChildrenNode_1 = require("./snap/ChildrenNode");
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
var ViewCache_1 = require("./view/ViewCache");
var View_1 = require("./view/View");
var __referenceConstructor;
/**
 * SyncPoint represents a single location in a SyncTree with 1 or more event registrations, meaning we need to
 * maintain 1 or more Views at this location to cache server data and raise appropriate events for server changes
 * and user writes (set, transaction, update).
 *
 * It's responsible for:
 *  - Maintaining the set of 1 or more views necessary at this location (a SyncPoint with 0 views should be removed).
 *  - Proxying user / server operations to the views as appropriate (i.e. applyServerOverwrite,
 *    applyUserOverwrite, etc.)
 */
var SyncPoint = /** @class */ (function () {
    function SyncPoint() {
        /**
         * The Views being tracked at this location in the tree, stored as a map where the key is a
         * queryId and the value is the View for that query.
         *
         * NOTE: This list will be quite small (usually 1, but perhaps 2 or 3; any more is an odd use case).
         *
         * @type {!Object.<!string, !View>}
         * @private
         */
        this.views_ = {};
    }
    Object.defineProperty(SyncPoint, "__referenceConstructor", {
        get: function () {
            util_1.assert(__referenceConstructor, 'Reference.ts has not been loaded');
            return __referenceConstructor;
        },
        set: function (val) {
            util_1.assert(!__referenceConstructor, '__referenceConstructor has already been defined');
            __referenceConstructor = val;
        },
        enumerable: true,
        configurable: true
    });
    /**
     * @return {boolean}
     */
    SyncPoint.prototype.isEmpty = function () {
        return util_2.isEmpty(this.views_);
    };
    /**
     *
     * @param {!Operation} operation
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} optCompleteServerCache
     * @return {!Array.<!Event>}
     */
    SyncPoint.prototype.applyOperation = function (operation, writesCache, optCompleteServerCache) {
        var queryId = operation.source.queryId;
        if (queryId !== null) {
            var view = util_2.safeGet(this.views_, queryId);
            util_1.assert(view != null, 'SyncTree gave us an op for an invalid query.');
            return view.applyOperation(operation, writesCache, optCompleteServerCache);
        }
        else {
            var events_1 = [];
            util_2.forEach(this.views_, function (key, view) {
                events_1 = events_1.concat(view.applyOperation(operation, writesCache, optCompleteServerCache));
            });
            return events_1;
        }
    };
    /**
     * Add an event callback for the specified query.
     *
     * @param {!Query} query
     * @param {!EventRegistration} eventRegistration
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} serverCache Complete server cache, if we have it.
     * @param {boolean} serverCacheComplete
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncPoint.prototype.addEventRegistration = function (query, eventRegistration, writesCache, serverCache, serverCacheComplete) {
        var queryId = query.queryIdentifier();
        var view = util_2.safeGet(this.views_, queryId);
        if (!view) {
            // TODO: make writesCache take flag for complete server node
            var eventCache = writesCache.calcCompleteEventCache(serverCacheComplete ? serverCache : null);
            var eventCacheComplete = false;
            if (eventCache) {
                eventCacheComplete = true;
            }
            else if (serverCache instanceof ChildrenNode_1.ChildrenNode) {
                eventCache = writesCache.calcCompleteEventChildren(serverCache);
                eventCacheComplete = false;
            }
            else {
                eventCache = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
                eventCacheComplete = false;
            }
            var viewCache = new ViewCache_1.ViewCache(new CacheNode_1.CacheNode(
            /** @type {!Node} */ (eventCache), eventCacheComplete, false), new CacheNode_1.CacheNode(
            /** @type {!Node} */ (serverCache), serverCacheComplete, false));
            view = new View_1.View(query, viewCache);
            this.views_[queryId] = view;
        }
        // This is guaranteed to exist now, we just created anything that was missing
        view.addEventRegistration(eventRegistration);
        return view.getInitialEvents(eventRegistration);
    };
    /**
     * Remove event callback(s).  Return cancelEvents if a cancelError is specified.
     *
     * If query is the default query, we'll check all views for the specified eventRegistration.
     * If eventRegistration is null, we'll remove all callbacks for the specified view(s).
     *
     * @param {!Query} query
     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.
     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.
     * @return {{removed:!Array.<!Query>, events:!Array.<!Event>}} removed queries and any cancel events
     */
    SyncPoint.prototype.removeEventRegistration = function (query, eventRegistration, cancelError) {
        var queryId = query.queryIdentifier();
        var removed = [];
        var cancelEvents = [];
        var hadCompleteView = this.hasCompleteView();
        if (queryId === 'default') {
            // When you do ref.off(...), we search all views for the registration to remove.
            var self_1 = this;
            util_2.forEach(this.views_, function (viewQueryId, view) {
                cancelEvents = cancelEvents.concat(view.removeEventRegistration(eventRegistration, cancelError));
                if (view.isEmpty()) {
                    delete self_1.views_[viewQueryId];
                    // We'll deal with complete views later.
                    if (!view
                        .getQuery()
                        .getQueryParams()
                        .loadsAllData()) {
                        removed.push(view.getQuery());
                    }
                }
            });
        }
        else {
            // remove the callback from the specific view.
            var view = util_2.safeGet(this.views_, queryId);
            if (view) {
                cancelEvents = cancelEvents.concat(view.removeEventRegistration(eventRegistration, cancelError));
                if (view.isEmpty()) {
                    delete this.views_[queryId];
                    // We'll deal with complete views later.
                    if (!view
                        .getQuery()
                        .getQueryParams()
                        .loadsAllData()) {
                        removed.push(view.getQuery());
                    }
                }
            }
        }
        if (hadCompleteView && !this.hasCompleteView()) {
            // We removed our last complete view.
            removed.push(new SyncPoint.__referenceConstructor(query.repo, query.path));
        }
        return { removed: removed, events: cancelEvents };
    };
    /**
     * @return {!Array.<!View>}
     */
    SyncPoint.prototype.getQueryViews = function () {
        var _this = this;
        var values = Object.keys(this.views_).map(function (key) { return _this.views_[key]; });
        return values.filter(function (view) {
            return !view
                .getQuery()
                .getQueryParams()
                .loadsAllData();
        });
    };
    /**
     *
     * @param {!Path} path The path to the desired complete snapshot
     * @return {?Node} A complete cache, if it exists
     */
    SyncPoint.prototype.getCompleteServerCache = function (path) {
        var serverCache = null;
        util_2.forEach(this.views_, function (key, view) {
            serverCache = serverCache || view.getCompleteServerCache(path);
        });
        return serverCache;
    };
    /**
     * @param {!Query} query
     * @return {?View}
     */
    SyncPoint.prototype.viewForQuery = function (query) {
        var params = query.getQueryParams();
        if (params.loadsAllData()) {
            return this.getCompleteView();
        }
        else {
            var queryId = query.queryIdentifier();
            return util_2.safeGet(this.views_, queryId);
        }
    };
    /**
     * @param {!Query} query
     * @return {boolean}
     */
    SyncPoint.prototype.viewExistsForQuery = function (query) {
        return this.viewForQuery(query) != null;
    };
    /**
     * @return {boolean}
     */
    SyncPoint.prototype.hasCompleteView = function () {
        return this.getCompleteView() != null;
    };
    /**
     * @return {?View}
     */
    SyncPoint.prototype.getCompleteView = function () {
        var completeView = util_2.findValue(this.views_, function (view) {
            return view
                .getQuery()
                .getQueryParams()
                .loadsAllData();
        });
        return completeView || null;
    };
    return SyncPoint;
}());
exports.SyncPoint = SyncPoint;



},{"./snap/ChildrenNode":32,"./view/CacheNode":65,"./view/View":74,"./view/ViewCache":75,"@firebase/util":92}],25:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("./util/util");
var AckUserWrite_1 = require("./operation/AckUserWrite");
var ChildrenNode_1 = require("./snap/ChildrenNode");
var util_3 = require("@firebase/util");
var ImmutableTree_1 = require("./util/ImmutableTree");
var ListenComplete_1 = require("./operation/ListenComplete");
var Merge_1 = require("./operation/Merge");
var Operation_1 = require("./operation/Operation");
var Overwrite_1 = require("./operation/Overwrite");
var Path_1 = require("./util/Path");
var SyncPoint_1 = require("./SyncPoint");
var WriteTree_1 = require("./WriteTree");
/**
 * SyncTree is the central class for managing event callback registration, data caching, views
 * (query processing), and event generation.  There are typically two SyncTree instances for
 * each Repo, one for the normal Firebase data, and one for the .info data.
 *
 * It has a number of responsibilities, including:
 *  - Tracking all user event callbacks (registered via addEventRegistration() and removeEventRegistration()).
 *  - Applying and caching data changes for user set(), transaction(), and update() calls
 *    (applyUserOverwrite(), applyUserMerge()).
 *  - Applying and caching data changes for server data changes (applyServerOverwrite(),
 *    applyServerMerge()).
 *  - Generating user-facing events for server and user changes (all of the apply* methods
 *    return the set of events that need to be raised as a result).
 *  - Maintaining the appropriate set of server listens to ensure we are always subscribed
 *    to the correct set of paths and queries to satisfy the current set of user event
 *    callbacks (listens are started/stopped using the provided listenProvider).
 *
 * NOTE: Although SyncTree tracks event callbacks and calculates events to raise, the actual
 * events are returned to the caller rather than raised synchronously.
 *
 * @constructor
 */
var SyncTree = /** @class */ (function () {
    /**
     * @param {!ListenProvider} listenProvider_ Used by SyncTree to start / stop listening
     *   to server data.
     */
    function SyncTree(listenProvider_) {
        this.listenProvider_ = listenProvider_;
        /**
         * Tree of SyncPoints.  There's a SyncPoint at any location that has 1 or more views.
         * @type {!ImmutableTree.<!SyncPoint>}
         * @private
         */
        this.syncPointTree_ = ImmutableTree_1.ImmutableTree.Empty;
        /**
         * A tree of all pending user writes (user-initiated set()'s, transaction()'s, update()'s, etc.).
         * @type {!WriteTree}
         * @private
         */
        this.pendingWriteTree_ = new WriteTree_1.WriteTree();
        this.tagToQueryMap_ = {};
        this.queryToTagMap_ = {};
    }
    /**
     * Apply the data changes for a user-generated set() or transaction() call.
     *
     * @param {!Path} path
     * @param {!Node} newData
     * @param {number} writeId
     * @param {boolean=} visible
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyUserOverwrite = function (path, newData, writeId, visible) {
        // Record pending write.
        this.pendingWriteTree_.addOverwrite(path, newData, writeId, visible);
        if (!visible) {
            return [];
        }
        else {
            return this.applyOperationToSyncPoints_(new Overwrite_1.Overwrite(Operation_1.OperationSource.User, path, newData));
        }
    };
    /**
     * Apply the data from a user-generated update() call
     *
     * @param {!Path} path
     * @param {!Object.<string, !Node>} changedChildren
     * @param {!number} writeId
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyUserMerge = function (path, changedChildren, writeId) {
        // Record pending merge.
        this.pendingWriteTree_.addMerge(path, changedChildren, writeId);
        var changeTree = ImmutableTree_1.ImmutableTree.fromObject(changedChildren);
        return this.applyOperationToSyncPoints_(new Merge_1.Merge(Operation_1.OperationSource.User, path, changeTree));
    };
    /**
     * Acknowledge a pending user write that was previously registered with applyUserOverwrite() or applyUserMerge().
     *
     * @param {!number} writeId
     * @param {boolean=} revert True if the given write failed and needs to be reverted
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.ackUserWrite = function (writeId, revert) {
        if (revert === void 0) { revert = false; }
        var write = this.pendingWriteTree_.getWrite(writeId);
        var needToReevaluate = this.pendingWriteTree_.removeWrite(writeId);
        if (!needToReevaluate) {
            return [];
        }
        else {
            var affectedTree_1 = ImmutableTree_1.ImmutableTree.Empty;
            if (write.snap != null) {
                // overwrite
                affectedTree_1 = affectedTree_1.set(Path_1.Path.Empty, true);
            }
            else {
                util_3.forEach(write.children, function (pathString, node) {
                    affectedTree_1 = affectedTree_1.set(new Path_1.Path(pathString), node);
                });
            }
            return this.applyOperationToSyncPoints_(new AckUserWrite_1.AckUserWrite(write.path, affectedTree_1, revert));
        }
    };
    /**
     * Apply new server data for the specified path..
     *
     * @param {!Path} path
     * @param {!Node} newData
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyServerOverwrite = function (path, newData) {
        return this.applyOperationToSyncPoints_(new Overwrite_1.Overwrite(Operation_1.OperationSource.Server, path, newData));
    };
    /**
     * Apply new server data to be merged in at the specified path.
     *
     * @param {!Path} path
     * @param {!Object.<string, !Node>} changedChildren
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyServerMerge = function (path, changedChildren) {
        var changeTree = ImmutableTree_1.ImmutableTree.fromObject(changedChildren);
        return this.applyOperationToSyncPoints_(new Merge_1.Merge(Operation_1.OperationSource.Server, path, changeTree));
    };
    /**
     * Apply a listen complete for a query
     *
     * @param {!Path} path
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyListenComplete = function (path) {
        return this.applyOperationToSyncPoints_(new ListenComplete_1.ListenComplete(Operation_1.OperationSource.Server, path));
    };
    /**
     * Apply new server data for the specified tagged query.
     *
     * @param {!Path} path
     * @param {!Node} snap
     * @param {!number} tag
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyTaggedQueryOverwrite = function (path, snap, tag) {
        var queryKey = this.queryKeyForTag_(tag);
        if (queryKey != null) {
            var r = SyncTree.parseQueryKey_(queryKey);
            var queryPath = r.path, queryId = r.queryId;
            var relativePath = Path_1.Path.relativePath(queryPath, path);
            var op = new Overwrite_1.Overwrite(Operation_1.OperationSource.forServerTaggedQuery(queryId), relativePath, snap);
            return this.applyTaggedOperation_(queryPath, op);
        }
        else {
            // Query must have been removed already
            return [];
        }
    };
    /**
     * Apply server data to be merged in for the specified tagged query.
     *
     * @param {!Path} path
     * @param {!Object.<string, !Node>} changedChildren
     * @param {!number} tag
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyTaggedQueryMerge = function (path, changedChildren, tag) {
        var queryKey = this.queryKeyForTag_(tag);
        if (queryKey) {
            var r = SyncTree.parseQueryKey_(queryKey);
            var queryPath = r.path, queryId = r.queryId;
            var relativePath = Path_1.Path.relativePath(queryPath, path);
            var changeTree = ImmutableTree_1.ImmutableTree.fromObject(changedChildren);
            var op = new Merge_1.Merge(Operation_1.OperationSource.forServerTaggedQuery(queryId), relativePath, changeTree);
            return this.applyTaggedOperation_(queryPath, op);
        }
        else {
            // We've already removed the query. No big deal, ignore the update
            return [];
        }
    };
    /**
     * Apply a listen complete for a tagged query
     *
     * @param {!Path} path
     * @param {!number} tag
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.applyTaggedListenComplete = function (path, tag) {
        var queryKey = this.queryKeyForTag_(tag);
        if (queryKey) {
            var r = SyncTree.parseQueryKey_(queryKey);
            var queryPath = r.path, queryId = r.queryId;
            var relativePath = Path_1.Path.relativePath(queryPath, path);
            var op = new ListenComplete_1.ListenComplete(Operation_1.OperationSource.forServerTaggedQuery(queryId), relativePath);
            return this.applyTaggedOperation_(queryPath, op);
        }
        else {
            // We've already removed the query. No big deal, ignore the update
            return [];
        }
    };
    /**
     * Add an event callback for the specified query.
     *
     * @param {!Query} query
     * @param {!EventRegistration} eventRegistration
     * @return {!Array.<!Event>} Events to raise.
     */
    SyncTree.prototype.addEventRegistration = function (query, eventRegistration) {
        var path = query.path;
        var serverCache = null;
        var foundAncestorDefaultView = false;
        // Any covering writes will necessarily be at the root, so really all we need to find is the server cache.
        // Consider optimizing this once there's a better understanding of what actual behavior will be.
        this.syncPointTree_.foreachOnPath(path, function (pathToSyncPoint, sp) {
            var relativePath = Path_1.Path.relativePath(pathToSyncPoint, path);
            serverCache = serverCache || sp.getCompleteServerCache(relativePath);
            foundAncestorDefaultView =
                foundAncestorDefaultView || sp.hasCompleteView();
        });
        var syncPoint = this.syncPointTree_.get(path);
        if (!syncPoint) {
            syncPoint = new SyncPoint_1.SyncPoint();
            this.syncPointTree_ = this.syncPointTree_.set(path, syncPoint);
        }
        else {
            foundAncestorDefaultView =
                foundAncestorDefaultView || syncPoint.hasCompleteView();
            serverCache = serverCache || syncPoint.getCompleteServerCache(Path_1.Path.Empty);
        }
        var serverCacheComplete;
        if (serverCache != null) {
            serverCacheComplete = true;
        }
        else {
            serverCacheComplete = false;
            serverCache = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
            var subtree = this.syncPointTree_.subtree(path);
            subtree.foreachChild(function (childName, childSyncPoint) {
                var completeCache = childSyncPoint.getCompleteServerCache(Path_1.Path.Empty);
                if (completeCache) {
                    serverCache = serverCache.updateImmediateChild(childName, completeCache);
                }
            });
        }
        var viewAlreadyExists = syncPoint.viewExistsForQuery(query);
        if (!viewAlreadyExists && !query.getQueryParams().loadsAllData()) {
            // We need to track a tag for this query
            var queryKey = SyncTree.makeQueryKey_(query);
            util_1.assert(!(queryKey in this.queryToTagMap_), 'View does not exist, but we have a tag');
            var tag = SyncTree.getNextQueryTag_();
            this.queryToTagMap_[queryKey] = tag;
            // Coerce to string to avoid sparse arrays.
            this.tagToQueryMap_['_' + tag] = queryKey;
        }
        var writesCache = this.pendingWriteTree_.childWrites(path);
        var events = syncPoint.addEventRegistration(query, eventRegistration, writesCache, serverCache, serverCacheComplete);
        if (!viewAlreadyExists && !foundAncestorDefaultView) {
            var view /** @type !View */ = syncPoint.viewForQuery(query);
            events = events.concat(this.setupListener_(query, view));
        }
        return events;
    };
    /**
     * Remove event callback(s).
     *
     * If query is the default query, we'll check all queries for the specified eventRegistration.
     * If eventRegistration is null, we'll remove all callbacks for the specified query/queries.
     *
     * @param {!Query} query
     * @param {?EventRegistration} eventRegistration If null, all callbacks are removed.
     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.
     * @return {!Array.<!Event>} Cancel events, if cancelError was provided.
     */
    SyncTree.prototype.removeEventRegistration = function (query, eventRegistration, cancelError) {
        var _this = this;
        // Find the syncPoint first. Then deal with whether or not it has matching listeners
        var path = query.path;
        var maybeSyncPoint = this.syncPointTree_.get(path);
        var cancelEvents = [];
        // A removal on a default query affects all queries at that location. A removal on an indexed query, even one without
        // other query constraints, does *not* affect all queries at that location. So this check must be for 'default', and
        // not loadsAllData().
        if (maybeSyncPoint &&
            (query.queryIdentifier() === 'default' ||
                maybeSyncPoint.viewExistsForQuery(query))) {
            /**
             * @type {{removed: !Array.<!Query>, events: !Array.<!Event>}}
             */
            var removedAndEvents = maybeSyncPoint.removeEventRegistration(query, eventRegistration, cancelError);
            if (maybeSyncPoint.isEmpty()) {
                this.syncPointTree_ = this.syncPointTree_.remove(path);
            }
            var removed = removedAndEvents.removed;
            cancelEvents = removedAndEvents.events;
            // We may have just removed one of many listeners and can short-circuit this whole process
            // We may also not have removed a default listener, in which case all of the descendant listeners should already be
            // properly set up.
            //
            // Since indexed queries can shadow if they don't have other query constraints, check for loadsAllData(), instead of
            // queryId === 'default'
            var removingDefault = -1 !==
                removed.findIndex(function (query) {
                    return query.getQueryParams().loadsAllData();
                });
            var covered = this.syncPointTree_.findOnPath(path, function (relativePath, parentSyncPoint) {
                return parentSyncPoint.hasCompleteView();
            });
            if (removingDefault && !covered) {
                var subtree = this.syncPointTree_.subtree(path);
                // There are potentially child listeners. Determine what if any listens we need to send before executing the
                // removal
                if (!subtree.isEmpty()) {
                    // We need to fold over our subtree and collect the listeners to send
                    var newViews = this.collectDistinctViewsForSubTree_(subtree);
                    // Ok, we've collected all the listens we need. Set them up.
                    for (var i = 0; i < newViews.length; ++i) {
                        var view = newViews[i], newQuery = view.getQuery();
                        var listener = this.createListenerForView_(view);
                        this.listenProvider_.startListening(SyncTree.queryForListening_(newQuery), this.tagForQuery_(newQuery), listener.hashFn, listener.onComplete);
                    }
                }
                else {
                    // There's nothing below us, so nothing we need to start listening on
                }
            }
            // If we removed anything and we're not covered by a higher up listen, we need to stop listening on this query
            // The above block has us covered in terms of making sure we're set up on listens lower in the tree.
            // Also, note that if we have a cancelError, it's already been removed at the provider level.
            if (!covered && removed.length > 0 && !cancelError) {
                // If we removed a default, then we weren't listening on any of the other queries here. Just cancel the one
                // default. Otherwise, we need to iterate through and cancel each individual query
                if (removingDefault) {
                    // We don't tag default listeners
                    var defaultTag = null;
                    this.listenProvider_.stopListening(SyncTree.queryForListening_(query), defaultTag);
                }
                else {
                    removed.forEach(function (queryToRemove) {
                        var tagToRemove = _this.queryToTagMap_[SyncTree.makeQueryKey_(queryToRemove)];
                        _this.listenProvider_.stopListening(SyncTree.queryForListening_(queryToRemove), tagToRemove);
                    });
                }
            }
            // Now, clear all of the tags we're tracking for the removed listens
            this.removeTags_(removed);
        }
        else {
            // No-op, this listener must've been already removed
        }
        return cancelEvents;
    };
    /**
     * Returns a complete cache, if we have one, of the data at a particular path. The location must have a listener above
     * it, but as this is only used by transaction code, that should always be the case anyways.
     *
     * Note: this method will *include* hidden writes from transaction with applyLocally set to false.
     * @param {!Path} path The path to the data we want
     * @param {Array.<number>=} writeIdsToExclude A specific set to be excluded
     * @return {?Node}
     */
    SyncTree.prototype.calcCompleteEventCache = function (path, writeIdsToExclude) {
        var includeHiddenSets = true;
        var writeTree = this.pendingWriteTree_;
        var serverCache = this.syncPointTree_.findOnPath(path, function (pathSoFar, syncPoint) {
            var relativePath = Path_1.Path.relativePath(pathSoFar, path);
            var serverCache = syncPoint.getCompleteServerCache(relativePath);
            if (serverCache) {
                return serverCache;
            }
        });
        return writeTree.calcCompleteEventCache(path, serverCache, writeIdsToExclude, includeHiddenSets);
    };
    /**
     * This collapses multiple unfiltered views into a single view, since we only need a single
     * listener for them.
     *
     * @param {!ImmutableTree.<!SyncPoint>} subtree
     * @return {!Array.<!View>}
     * @private
     */
    SyncTree.prototype.collectDistinctViewsForSubTree_ = function (subtree) {
        return subtree.fold(function (relativePath, maybeChildSyncPoint, childMap) {
            if (maybeChildSyncPoint && maybeChildSyncPoint.hasCompleteView()) {
                var completeView = maybeChildSyncPoint.getCompleteView();
                return [completeView];
            }
            else {
                // No complete view here, flatten any deeper listens into an array
                var views_1 = [];
                if (maybeChildSyncPoint) {
                    views_1 = maybeChildSyncPoint.getQueryViews();
                }
                util_3.forEach(childMap, function (key, childViews) {
                    views_1 = views_1.concat(childViews);
                });
                return views_1;
            }
        });
    };
    /**
     * @param {!Array.<!Query>} queries
     * @private
     */
    SyncTree.prototype.removeTags_ = function (queries) {
        for (var j = 0; j < queries.length; ++j) {
            var removedQuery = queries[j];
            if (!removedQuery.getQueryParams().loadsAllData()) {
                // We should have a tag for this
                var removedQueryKey = SyncTree.makeQueryKey_(removedQuery);
                var removedQueryTag = this.queryToTagMap_[removedQueryKey];
                delete this.queryToTagMap_[removedQueryKey];
                delete this.tagToQueryMap_['_' + removedQueryTag];
            }
        }
    };
    /**
     * Normalizes a query to a query we send the server for listening
     * @param {!Query} query
     * @return {!Query} The normalized query
     * @private
     */
    SyncTree.queryForListening_ = function (query) {
        if (query.getQueryParams().loadsAllData() &&
            !query.getQueryParams().isDefault()) {
            // We treat queries that load all data as default queries
            // Cast is necessary because ref() technically returns Firebase which is actually fb.api.Firebase which inherits
            // from Query
            return /** @type {!Query} */ query.getRef();
        }
        else {
            return query;
        }
    };
    /**
     * For a given new listen, manage the de-duplication of outstanding subscriptions.
     *
     * @param {!Query} query
     * @param {!View} view
     * @return {!Array.<!Event>} This method can return events to support synchronous data sources
     * @private
     */
    SyncTree.prototype.setupListener_ = function (query, view) {
        var path = query.path;
        var tag = this.tagForQuery_(query);
        var listener = this.createListenerForView_(view);
        var events = this.listenProvider_.startListening(SyncTree.queryForListening_(query), tag, listener.hashFn, listener.onComplete);
        var subtree = this.syncPointTree_.subtree(path);
        // The root of this subtree has our query. We're here because we definitely need to send a listen for that, but we
        // may need to shadow other listens as well.
        if (tag) {
            util_1.assert(!subtree.value.hasCompleteView(), "If we're adding a query, it shouldn't be shadowed");
        }
        else {
            // Shadow everything at or below this location, this is a default listener.
            var queriesToStop = subtree.fold(function (relativePath, maybeChildSyncPoint, childMap) {
                if (!relativePath.isEmpty() &&
                    maybeChildSyncPoint &&
                    maybeChildSyncPoint.hasCompleteView()) {
                    return [maybeChildSyncPoint.getCompleteView().getQuery()];
                }
                else {
                    // No default listener here, flatten any deeper queries into an array
                    var queries_1 = [];
                    if (maybeChildSyncPoint) {
                        queries_1 = queries_1.concat(maybeChildSyncPoint.getQueryViews().map(function (view) { return view.getQuery(); }));
                    }
                    util_3.forEach(childMap, function (key, childQueries) {
                        queries_1 = queries_1.concat(childQueries);
                    });
                    return queries_1;
                }
            });
            for (var i = 0; i < queriesToStop.length; ++i) {
                var queryToStop = queriesToStop[i];
                this.listenProvider_.stopListening(SyncTree.queryForListening_(queryToStop), this.tagForQuery_(queryToStop));
            }
        }
        return events;
    };
    /**
     *
     * @param {!View} view
     * @return {{hashFn: function(), onComplete: function(!string, *)}}
     * @private
     */
    SyncTree.prototype.createListenerForView_ = function (view) {
        var _this = this;
        var query = view.getQuery();
        var tag = this.tagForQuery_(query);
        return {
            hashFn: function () {
                var cache = view.getServerCache() || ChildrenNode_1.ChildrenNode.EMPTY_NODE;
                return cache.hash();
            },
            onComplete: function (status) {
                if (status === 'ok') {
                    if (tag) {
                        return _this.applyTaggedListenComplete(query.path, tag);
                    }
                    else {
                        return _this.applyListenComplete(query.path);
                    }
                }
                else {
                    // If a listen failed, kill all of the listeners here, not just the one that triggered the error.
                    // Note that this may need to be scoped to just this listener if we change permissions on filtered children
                    var error = util_2.errorForServerCode(status, query);
                    return _this.removeEventRegistration(query, 
                    /*eventRegistration*/ null, error);
                }
            }
        };
    };
    /**
     * Given a query, computes a "queryKey" suitable for use in our queryToTagMap_.
     * @private
     * @param {!Query} query
     * @return {string}
     */
    SyncTree.makeQueryKey_ = function (query) {
        return query.path.toString() + '$' + query.queryIdentifier();
    };
    /**
     * Given a queryKey (created by makeQueryKey), parse it back into a path and queryId.
     * @private
     * @param {!string} queryKey
     * @return {{queryId: !string, path: !Path}}
     */
    SyncTree.parseQueryKey_ = function (queryKey) {
        var splitIndex = queryKey.indexOf('$');
        util_1.assert(splitIndex !== -1 && splitIndex < queryKey.length - 1, 'Bad queryKey.');
        return {
            queryId: queryKey.substr(splitIndex + 1),
            path: new Path_1.Path(queryKey.substr(0, splitIndex))
        };
    };
    /**
     * Return the query associated with the given tag, if we have one
     * @param {!number} tag
     * @return {?string}
     * @private
     */
    SyncTree.prototype.queryKeyForTag_ = function (tag) {
        return this.tagToQueryMap_['_' + tag];
    };
    /**
     * Return the tag associated with the given query.
     * @param {!Query} query
     * @return {?number}
     * @private
     */
    SyncTree.prototype.tagForQuery_ = function (query) {
        var queryKey = SyncTree.makeQueryKey_(query);
        return util_3.safeGet(this.queryToTagMap_, queryKey);
    };
    /**
     * Static accessor for query tags.
     * @return {number}
     * @private
     */
    SyncTree.getNextQueryTag_ = function () {
        return SyncTree.nextQueryTag_++;
    };
    /**
     * A helper method to apply tagged operations
     *
     * @param {!Path} queryPath
     * @param {!Operation} operation
     * @return {!Array.<!Event>}
     * @private
     */
    SyncTree.prototype.applyTaggedOperation_ = function (queryPath, operation) {
        var syncPoint = this.syncPointTree_.get(queryPath);
        util_1.assert(syncPoint, "Missing sync point for query tag that we're tracking");
        var writesCache = this.pendingWriteTree_.childWrites(queryPath);
        return syncPoint.applyOperation(operation, writesCache, 
        /*serverCache=*/ null);
    };
    /**
     * A helper method that visits all descendant and ancestor SyncPoints, applying the operation.
     *
     * NOTES:
     * - Descendant SyncPoints will be visited first (since we raise events depth-first).
  
     * - We call applyOperation() on each SyncPoint passing three things:
     *   1. A version of the Operation that has been made relative to the SyncPoint location.
     *   2. A WriteTreeRef of any writes we have cached at the SyncPoint location.
     *   3. A snapshot Node with cached server data, if we have it.
  
     * - We concatenate all of the events returned by each SyncPoint and return the result.
     *
     * @param {!Operation} operation
     * @return {!Array.<!Event>}
     * @private
     */
    SyncTree.prototype.applyOperationToSyncPoints_ = function (operation) {
        return this.applyOperationHelper_(operation, this.syncPointTree_, 
        /*serverCache=*/ null, this.pendingWriteTree_.childWrites(Path_1.Path.Empty));
    };
    /**
     * Recursive helper for applyOperationToSyncPoints_
     *
     * @private
     * @param {!Operation} operation
     * @param {ImmutableTree.<!SyncPoint>} syncPointTree
     * @param {?Node} serverCache
     * @param {!WriteTreeRef} writesCache
     * @return {!Array.<!Event>}
     */
    SyncTree.prototype.applyOperationHelper_ = function (operation, syncPointTree, serverCache, writesCache) {
        if (operation.path.isEmpty()) {
            return this.applyOperationDescendantsHelper_(operation, syncPointTree, serverCache, writesCache);
        }
        else {
            var syncPoint = syncPointTree.get(Path_1.Path.Empty);
            // If we don't have cached server data, see if we can get it from this SyncPoint.
            if (serverCache == null && syncPoint != null) {
                serverCache = syncPoint.getCompleteServerCache(Path_1.Path.Empty);
            }
            var events = [];
            var childName = operation.path.getFront();
            var childOperation = operation.operationForChild(childName);
            var childTree = syncPointTree.children.get(childName);
            if (childTree && childOperation) {
                var childServerCache = serverCache
                    ? serverCache.getImmediateChild(childName)
                    : null;
                var childWritesCache = writesCache.child(childName);
                events = events.concat(this.applyOperationHelper_(childOperation, childTree, childServerCache, childWritesCache));
            }
            if (syncPoint) {
                events = events.concat(syncPoint.applyOperation(operation, writesCache, serverCache));
            }
            return events;
        }
    };
    /**
     * Recursive helper for applyOperationToSyncPoints_
     *
     * @private
     * @param {!Operation} operation
     * @param {ImmutableTree.<!SyncPoint>} syncPointTree
     * @param {?Node} serverCache
     * @param {!WriteTreeRef} writesCache
     * @return {!Array.<!Event>}
     */
    SyncTree.prototype.applyOperationDescendantsHelper_ = function (operation, syncPointTree, serverCache, writesCache) {
        var _this = this;
        var syncPoint = syncPointTree.get(Path_1.Path.Empty);
        // If we don't have cached server data, see if we can get it from this SyncPoint.
        if (serverCache == null && syncPoint != null) {
            serverCache = syncPoint.getCompleteServerCache(Path_1.Path.Empty);
        }
        var events = [];
        syncPointTree.children.inorderTraversal(function (childName, childTree) {
            var childServerCache = serverCache
                ? serverCache.getImmediateChild(childName)
                : null;
            var childWritesCache = writesCache.child(childName);
            var childOperation = operation.operationForChild(childName);
            if (childOperation) {
                events = events.concat(_this.applyOperationDescendantsHelper_(childOperation, childTree, childServerCache, childWritesCache));
            }
        });
        if (syncPoint) {
            events = events.concat(syncPoint.applyOperation(operation, writesCache, serverCache));
        }
        return events;
    };
    /**
     * Static tracker for next query tag.
     * @type {number}
     * @private
     */
    SyncTree.nextQueryTag_ = 1;
    return SyncTree;
}());
exports.SyncTree = SyncTree;



},{"./SyncPoint":24,"./WriteTree":26,"./operation/AckUserWrite":27,"./operation/ListenComplete":28,"./operation/Merge":29,"./operation/Operation":30,"./operation/Overwrite":31,"./snap/ChildrenNode":32,"./util/ImmutableTree":54,"./util/Path":57,"./util/util":63,"@firebase/util":92}],26:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
var Path_1 = require("./util/Path");
var CompoundWrite_1 = require("./CompoundWrite");
var PriorityIndex_1 = require("./snap/indexes/PriorityIndex");
var ChildrenNode_1 = require("./snap/ChildrenNode");
/**
 * WriteTree tracks all pending user-initiated writes and has methods to calculate the result of merging them
 * with underlying server data (to create "event cache" data).  Pending writes are added with addOverwrite()
 * and addMerge(), and removed with removeWrite().
 *
 * @constructor
 */
var WriteTree = /** @class */ (function () {
    function WriteTree() {
        /**
         * A tree tracking the result of applying all visible writes.  This does not include transactions with
         * applyLocally=false or writes that are completely shadowed by other writes.
         *
         * @type {!CompoundWrite}
         * @private
         */
        this.visibleWrites_ = CompoundWrite_1.CompoundWrite.Empty;
        /**
         * A list of all pending writes, regardless of visibility and shadowed-ness.  Used to calculate arbitrary
         * sets of the changed data, such as hidden writes (from transactions) or changes with certain writes excluded (also
         * used by transactions).
         *
         * @type {!Array.<!WriteRecord>}
         * @private
         */
        this.allWrites_ = [];
        this.lastWriteId_ = -1;
    }
    /**
     * Create a new WriteTreeRef for the given path. For use with a new sync point at the given path.
     *
     * @param {!Path} path
     * @return {!WriteTreeRef}
     */
    WriteTree.prototype.childWrites = function (path) {
        return new WriteTreeRef(path, this);
    };
    /**
     * Record a new overwrite from user code.
     *
     * @param {!Path} path
     * @param {!Node} snap
     * @param {!number} writeId
     * @param {boolean=} visible This is set to false by some transactions. It should be excluded from event caches
     */
    WriteTree.prototype.addOverwrite = function (path, snap, writeId, visible) {
        util_2.assert(writeId > this.lastWriteId_, 'Stacking an older write on top of newer ones');
        if (visible === undefined) {
            visible = true;
        }
        this.allWrites_.push({
            path: path,
            snap: snap,
            writeId: writeId,
            visible: visible
        });
        if (visible) {
            this.visibleWrites_ = this.visibleWrites_.addWrite(path, snap);
        }
        this.lastWriteId_ = writeId;
    };
    /**
     * Record a new merge from user code.
     *
     * @param {!Path} path
     * @param {!Object.<string, !Node>} changedChildren
     * @param {!number} writeId
     */
    WriteTree.prototype.addMerge = function (path, changedChildren, writeId) {
        util_2.assert(writeId > this.lastWriteId_, 'Stacking an older merge on top of newer ones');
        this.allWrites_.push({
            path: path,
            children: changedChildren,
            writeId: writeId,
            visible: true
        });
        this.visibleWrites_ = this.visibleWrites_.addWrites(path, changedChildren);
        this.lastWriteId_ = writeId;
    };
    /**
     * @param {!number} writeId
     * @return {?WriteRecord}
     */
    WriteTree.prototype.getWrite = function (writeId) {
        for (var i = 0; i < this.allWrites_.length; i++) {
            var record = this.allWrites_[i];
            if (record.writeId === writeId) {
                return record;
            }
        }
        return null;
    };
    /**
     * Remove a write (either an overwrite or merge) that has been successfully acknowledge by the server. Recalculates
     * the tree if necessary.  We return true if it may have been visible, meaning views need to reevaluate.
     *
     * @param {!number} writeId
     * @return {boolean} true if the write may have been visible (meaning we'll need to reevaluate / raise
     * events as a result).
     */
    WriteTree.prototype.removeWrite = function (writeId) {
        // Note: disabling this check. It could be a transaction that preempted another transaction, and thus was applied
        // out of order.
        //const validClear = revert || this.allWrites_.length === 0 || writeId <= this.allWrites_[0].writeId;
        //assert(validClear, "Either we don't have this write, or it's the first one in the queue");
        var _this = this;
        var idx = this.allWrites_.findIndex(function (s) {
            return s.writeId === writeId;
        });
        util_2.assert(idx >= 0, 'removeWrite called with nonexistent writeId.');
        var writeToRemove = this.allWrites_[idx];
        this.allWrites_.splice(idx, 1);
        var removedWriteWasVisible = writeToRemove.visible;
        var removedWriteOverlapsWithOtherWrites = false;
        var i = this.allWrites_.length - 1;
        while (removedWriteWasVisible && i >= 0) {
            var currentWrite = this.allWrites_[i];
            if (currentWrite.visible) {
                if (i >= idx &&
                    this.recordContainsPath_(currentWrite, writeToRemove.path)) {
                    // The removed write was completely shadowed by a subsequent write.
                    removedWriteWasVisible = false;
                }
                else if (writeToRemove.path.contains(currentWrite.path)) {
                    // Either we're covering some writes or they're covering part of us (depending on which came first).
                    removedWriteOverlapsWithOtherWrites = true;
                }
            }
            i--;
        }
        if (!removedWriteWasVisible) {
            return false;
        }
        else if (removedWriteOverlapsWithOtherWrites) {
            // There's some shadowing going on. Just rebuild the visible writes from scratch.
            this.resetTree_();
            return true;
        }
        else {
            // There's no shadowing.  We can safely just remove the write(s) from visibleWrites.
            if (writeToRemove.snap) {
                this.visibleWrites_ = this.visibleWrites_.removeWrite(writeToRemove.path);
            }
            else {
                var children = writeToRemove.children;
                util_1.forEach(children, function (childName) {
                    _this.visibleWrites_ = _this.visibleWrites_.removeWrite(writeToRemove.path.child(childName));
                });
            }
            return true;
        }
    };
    /**
     * Return a complete snapshot for the given path if there's visible write data at that path, else null.
     * No server data is considered.
     *
     * @param {!Path} path
     * @return {?Node}
     */
    WriteTree.prototype.getCompleteWriteData = function (path) {
        return this.visibleWrites_.getCompleteNode(path);
    };
    /**
     * Given optional, underlying server data, and an optional set of constraints (exclude some sets, include hidden
     * writes), attempt to calculate a complete snapshot for the given path
     *
     * @param {!Path} treePath
     * @param {?Node} completeServerCache
     * @param {Array.<number>=} writeIdsToExclude An optional set to be excluded
     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false
     * @return {?Node}
     */
    WriteTree.prototype.calcCompleteEventCache = function (treePath, completeServerCache, writeIdsToExclude, includeHiddenWrites) {
        if (!writeIdsToExclude && !includeHiddenWrites) {
            var shadowingNode = this.visibleWrites_.getCompleteNode(treePath);
            if (shadowingNode != null) {
                return shadowingNode;
            }
            else {
                var subMerge = this.visibleWrites_.childCompoundWrite(treePath);
                if (subMerge.isEmpty()) {
                    return completeServerCache;
                }
                else if (completeServerCache == null &&
                    !subMerge.hasCompleteWrite(Path_1.Path.Empty)) {
                    // We wouldn't have a complete snapshot, since there's no underlying data and no complete shadow
                    return null;
                }
                else {
                    var layeredCache = completeServerCache || ChildrenNode_1.ChildrenNode.EMPTY_NODE;
                    return subMerge.apply(layeredCache);
                }
            }
        }
        else {
            var merge = this.visibleWrites_.childCompoundWrite(treePath);
            if (!includeHiddenWrites && merge.isEmpty()) {
                return completeServerCache;
            }
            else {
                // If the server cache is null, and we don't have a complete cache, we need to return null
                if (!includeHiddenWrites &&
                    completeServerCache == null &&
                    !merge.hasCompleteWrite(Path_1.Path.Empty)) {
                    return null;
                }
                else {
                    var filter = function (write) {
                        return ((write.visible || includeHiddenWrites) &&
                            (!writeIdsToExclude ||
                                !~writeIdsToExclude.indexOf(write.writeId)) &&
                            (write.path.contains(treePath) || treePath.contains(write.path)));
                    };
                    var mergeAtPath = WriteTree.layerTree_(this.allWrites_, filter, treePath);
                    var layeredCache = completeServerCache || ChildrenNode_1.ChildrenNode.EMPTY_NODE;
                    return mergeAtPath.apply(layeredCache);
                }
            }
        }
    };
    /**
     * With optional, underlying server data, attempt to return a children node of children that we have complete data for.
     * Used when creating new views, to pre-fill their complete event children snapshot.
     *
     * @param {!Path} treePath
     * @param {?ChildrenNode} completeServerChildren
     * @return {!ChildrenNode}
     */
    WriteTree.prototype.calcCompleteEventChildren = function (treePath, completeServerChildren) {
        var completeChildren = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
        var topLevelSet = this.visibleWrites_.getCompleteNode(treePath);
        if (topLevelSet) {
            if (!topLevelSet.isLeafNode()) {
                // we're shadowing everything. Return the children.
                topLevelSet.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (childName, childSnap) {
                    completeChildren = completeChildren.updateImmediateChild(childName, childSnap);
                });
            }
            return completeChildren;
        }
        else if (completeServerChildren) {
            // Layer any children we have on top of this
            // We know we don't have a top-level set, so just enumerate existing children
            var merge_1 = this.visibleWrites_.childCompoundWrite(treePath);
            completeServerChildren.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (childName, childNode) {
                var node = merge_1
                    .childCompoundWrite(new Path_1.Path(childName))
                    .apply(childNode);
                completeChildren = completeChildren.updateImmediateChild(childName, node);
            });
            // Add any complete children we have from the set
            merge_1.getCompleteChildren().forEach(function (namedNode) {
                completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);
            });
            return completeChildren;
        }
        else {
            // We don't have anything to layer on top of. Layer on any children we have
            // Note that we can return an empty snap if we have a defined delete
            var merge = this.visibleWrites_.childCompoundWrite(treePath);
            merge.getCompleteChildren().forEach(function (namedNode) {
                completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);
            });
            return completeChildren;
        }
    };
    /**
     * Given that the underlying server data has updated, determine what, if anything, needs to be
     * applied to the event cache.
     *
     * Possibilities:
     *
     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data
     *
     * 2. Some write is completely shadowing. No events to be raised
     *
     * 3. Is partially shadowed. Events
     *
     * Either existingEventSnap or existingServerSnap must exist
     *
     * @param {!Path} treePath
     * @param {!Path} childPath
     * @param {?Node} existingEventSnap
     * @param {?Node} existingServerSnap
     * @return {?Node}
     */
    WriteTree.prototype.calcEventCacheAfterServerOverwrite = function (treePath, childPath, existingEventSnap, existingServerSnap) {
        util_2.assert(existingEventSnap || existingServerSnap, 'Either existingEventSnap or existingServerSnap must exist');
        var path = treePath.child(childPath);
        if (this.visibleWrites_.hasCompleteWrite(path)) {
            // At this point we can probably guarantee that we're in case 2, meaning no events
            // May need to check visibility while doing the findRootMostValueAndPath call
            return null;
        }
        else {
            // No complete shadowing. We're either partially shadowing or not shadowing at all.
            var childMerge = this.visibleWrites_.childCompoundWrite(path);
            if (childMerge.isEmpty()) {
                // We're not shadowing at all. Case 1
                return existingServerSnap.getChild(childPath);
            }
            else {
                // This could be more efficient if the serverNode + updates doesn't change the eventSnap
                // However this is tricky to find out, since user updates don't necessary change the server
                // snap, e.g. priority updates on empty nodes, or deep deletes. Another special case is if the server
                // adds nodes, but doesn't change any existing writes. It is therefore not enough to
                // only check if the updates change the serverNode.
                // Maybe check if the merge tree contains these special cases and only do a full overwrite in that case?
                return childMerge.apply(existingServerSnap.getChild(childPath));
            }
        }
    };
    /**
     * Returns a complete child for a given server snap after applying all user writes or null if there is no
     * complete child for this ChildKey.
     *
     * @param {!Path} treePath
     * @param {!string} childKey
     * @param {!CacheNode} existingServerSnap
     * @return {?Node}
     */
    WriteTree.prototype.calcCompleteChild = function (treePath, childKey, existingServerSnap) {
        var path = treePath.child(childKey);
        var shadowingNode = this.visibleWrites_.getCompleteNode(path);
        if (shadowingNode != null) {
            return shadowingNode;
        }
        else {
            if (existingServerSnap.isCompleteForChild(childKey)) {
                var childMerge = this.visibleWrites_.childCompoundWrite(path);
                return childMerge.apply(existingServerSnap.getNode().getImmediateChild(childKey));
            }
            else {
                return null;
            }
        }
    };
    /**
     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at
     * a higher path, this will return the child of that write relative to the write and this path.
     * Returns null if there is no write at this path.
     *
     * @param {!Path} path
     * @return {?Node}
     */
    WriteTree.prototype.shadowingWrite = function (path) {
        return this.visibleWrites_.getCompleteNode(path);
    };
    /**
     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside
     * the window, but may now be in the window.
     *
     * @param {!Path} treePath
     * @param {?Node} completeServerData
     * @param {!NamedNode} startPost
     * @param {!number} count
     * @param {boolean} reverse
     * @param {!Index} index
     * @return {!Array.<!NamedNode>}
     */
    WriteTree.prototype.calcIndexedSlice = function (treePath, completeServerData, startPost, count, reverse, index) {
        var toIterate;
        var merge = this.visibleWrites_.childCompoundWrite(treePath);
        var shadowingNode = merge.getCompleteNode(Path_1.Path.Empty);
        if (shadowingNode != null) {
            toIterate = shadowingNode;
        }
        else if (completeServerData != null) {
            toIterate = merge.apply(completeServerData);
        }
        else {
            // no children to iterate on
            return [];
        }
        toIterate = toIterate.withIndex(index);
        if (!toIterate.isEmpty() && !toIterate.isLeafNode()) {
            var nodes = [];
            var cmp = index.getCompare();
            var iter = reverse
                ? toIterate.getReverseIteratorFrom(startPost, index)
                : toIterate.getIteratorFrom(startPost, index);
            var next = iter.getNext();
            while (next && nodes.length < count) {
                if (cmp(next, startPost) !== 0) {
                    nodes.push(next);
                }
                next = iter.getNext();
            }
            return nodes;
        }
        else {
            return [];
        }
    };
    /**
     * @param {!WriteRecord} writeRecord
     * @param {!Path} path
     * @return {boolean}
     * @private
     */
    WriteTree.prototype.recordContainsPath_ = function (writeRecord, path) {
        if (writeRecord.snap) {
            return writeRecord.path.contains(path);
        }
        else {
            // findKey can return undefined, so use !! to coerce to boolean
            return !!util_1.findKey(writeRecord.children, function (childSnap, childName) {
                return writeRecord.path.child(childName).contains(path);
            });
        }
    };
    /**
     * Re-layer the writes and merges into a tree so we can efficiently calculate event snapshots
     * @private
     */
    WriteTree.prototype.resetTree_ = function () {
        this.visibleWrites_ = WriteTree.layerTree_(this.allWrites_, WriteTree.DefaultFilter_, Path_1.Path.Empty);
        if (this.allWrites_.length > 0) {
            this.lastWriteId_ = this.allWrites_[this.allWrites_.length - 1].writeId;
        }
        else {
            this.lastWriteId_ = -1;
        }
    };
    /**
     * The default filter used when constructing the tree. Keep everything that's visible.
     *
     * @param {!WriteRecord} write
     * @return {boolean}
     * @private
     */
    WriteTree.DefaultFilter_ = function (write) {
        return write.visible;
    };
    /**
     * Static method. Given an array of WriteRecords, a filter for which ones to include, and a path, construct the tree of
     * event data at that path.
     *
     * @param {!Array.<!WriteRecord>} writes
     * @param {!function(!WriteRecord):boolean} filter
     * @param {!Path} treeRoot
     * @return {!CompoundWrite}
     * @private
     */
    WriteTree.layerTree_ = function (writes, filter, treeRoot) {
        var compoundWrite = CompoundWrite_1.CompoundWrite.Empty;
        for (var i = 0; i < writes.length; ++i) {
            var write = writes[i];
            // Theory, a later set will either:
            // a) abort a relevant transaction, so no need to worry about excluding it from calculating that transaction
            // b) not be relevant to a transaction (separate branch), so again will not affect the data for that transaction
            if (filter(write)) {
                var writePath = write.path;
                var relativePath = void 0;
                if (write.snap) {
                    if (treeRoot.contains(writePath)) {
                        relativePath = Path_1.Path.relativePath(treeRoot, writePath);
                        compoundWrite = compoundWrite.addWrite(relativePath, write.snap);
                    }
                    else if (writePath.contains(treeRoot)) {
                        relativePath = Path_1.Path.relativePath(writePath, treeRoot);
                        compoundWrite = compoundWrite.addWrite(Path_1.Path.Empty, write.snap.getChild(relativePath));
                    }
                    else {
                        // There is no overlap between root path and write path, ignore write
                    }
                }
                else if (write.children) {
                    if (treeRoot.contains(writePath)) {
                        relativePath = Path_1.Path.relativePath(treeRoot, writePath);
                        compoundWrite = compoundWrite.addWrites(relativePath, write.children);
                    }
                    else if (writePath.contains(treeRoot)) {
                        relativePath = Path_1.Path.relativePath(writePath, treeRoot);
                        if (relativePath.isEmpty()) {
                            compoundWrite = compoundWrite.addWrites(Path_1.Path.Empty, write.children);
                        }
                        else {
                            var child = util_1.safeGet(write.children, relativePath.getFront());
                            if (child) {
                                // There exists a child in this node that matches the root path
                                var deepNode = child.getChild(relativePath.popFront());
                                compoundWrite = compoundWrite.addWrite(Path_1.Path.Empty, deepNode);
                            }
                        }
                    }
                    else {
                        // There is no overlap between root path and write path, ignore write
                    }
                }
                else {
                    throw util_2.assertionError('WriteRecord should have .snap or .children');
                }
            }
        }
        return compoundWrite;
    };
    return WriteTree;
}());
exports.WriteTree = WriteTree;
/**
 * A WriteTreeRef wraps a WriteTree and a path, for convenient access to a particular subtree.  All of the methods
 * just proxy to the underlying WriteTree.
 *
 * @constructor
 */
var WriteTreeRef = /** @class */ (function () {
    /**
     * @param {!Path} path
     * @param {!WriteTree} writeTree
     */
    function WriteTreeRef(path, writeTree) {
        this.treePath_ = path;
        this.writeTree_ = writeTree;
    }
    /**
     * If possible, returns a complete event cache, using the underlying server data if possible. In addition, can be used
     * to get a cache that includes hidden writes, and excludes arbitrary writes. Note that customizing the returned node
     * can lead to a more expensive calculation.
     *
     * @param {?Node} completeServerCache
     * @param {Array.<number>=} writeIdsToExclude Optional writes to exclude.
     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false
     * @return {?Node}
     */
    WriteTreeRef.prototype.calcCompleteEventCache = function (completeServerCache, writeIdsToExclude, includeHiddenWrites) {
        return this.writeTree_.calcCompleteEventCache(this.treePath_, completeServerCache, writeIdsToExclude, includeHiddenWrites);
    };
    /**
     * If possible, returns a children node containing all of the complete children we have data for. The returned data is a
     * mix of the given server data and write data.
     *
     * @param {?ChildrenNode} completeServerChildren
     * @return {!ChildrenNode}
     */
    WriteTreeRef.prototype.calcCompleteEventChildren = function (completeServerChildren) {
        return this.writeTree_.calcCompleteEventChildren(this.treePath_, completeServerChildren);
    };
    /**
     * Given that either the underlying server data has updated or the outstanding writes have updated, determine what,
     * if anything, needs to be applied to the event cache.
     *
     * Possibilities:
     *
     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data
     *
     * 2. Some write is completely shadowing. No events to be raised
     *
     * 3. Is partially shadowed. Events should be raised
     *
     * Either existingEventSnap or existingServerSnap must exist, this is validated via an assert
     *
     * @param {!Path} path
     * @param {?Node} existingEventSnap
     * @param {?Node} existingServerSnap
     * @return {?Node}
     */
    WriteTreeRef.prototype.calcEventCacheAfterServerOverwrite = function (path, existingEventSnap, existingServerSnap) {
        return this.writeTree_.calcEventCacheAfterServerOverwrite(this.treePath_, path, existingEventSnap, existingServerSnap);
    };
    /**
     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at
     * a higher path, this will return the child of that write relative to the write and this path.
     * Returns null if there is no write at this path.
     *
     * @param {!Path} path
     * @return {?Node}
     */
    WriteTreeRef.prototype.shadowingWrite = function (path) {
        return this.writeTree_.shadowingWrite(this.treePath_.child(path));
    };
    /**
     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside
     * the window, but may now be in the window
     *
     * @param {?Node} completeServerData
     * @param {!NamedNode} startPost
     * @param {!number} count
     * @param {boolean} reverse
     * @param {!Index} index
     * @return {!Array.<!NamedNode>}
     */
    WriteTreeRef.prototype.calcIndexedSlice = function (completeServerData, startPost, count, reverse, index) {
        return this.writeTree_.calcIndexedSlice(this.treePath_, completeServerData, startPost, count, reverse, index);
    };
    /**
     * Returns a complete child for a given server snap after applying all user writes or null if there is no
     * complete child for this ChildKey.
     *
     * @param {!string} childKey
     * @param {!CacheNode} existingServerCache
     * @return {?Node}
     */
    WriteTreeRef.prototype.calcCompleteChild = function (childKey, existingServerCache) {
        return this.writeTree_.calcCompleteChild(this.treePath_, childKey, existingServerCache);
    };
    /**
     * Return a WriteTreeRef for a child.
     *
     * @param {string} childName
     * @return {!WriteTreeRef}
     */
    WriteTreeRef.prototype.child = function (childName) {
        return new WriteTreeRef(this.treePath_.child(childName), this.writeTree_);
    };
    return WriteTreeRef;
}());
exports.WriteTreeRef = WriteTreeRef;



},{"./CompoundWrite":14,"./snap/ChildrenNode":32,"./snap/indexes/PriorityIndex":41,"./util/Path":57,"@firebase/util":92}],27:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var Path_1 = require("../util/Path");
var Operation_1 = require("./Operation");
var AckUserWrite = /** @class */ (function () {
    /**
     *
     * @param {!Path} path
     * @param {!ImmutableTree<!boolean>} affectedTree A tree containing true for each affected path. Affected paths can't overlap.
     * @param {!boolean} revert
     */
    function AckUserWrite(
    /**@inheritDoc */ path, 
    /**@inheritDoc */ affectedTree, 
    /**@inheritDoc */ revert) {
        this.path = path;
        this.affectedTree = affectedTree;
        this.revert = revert;
        /** @inheritDoc */
        this.type = Operation_1.OperationType.ACK_USER_WRITE;
        /** @inheritDoc */
        this.source = Operation_1.OperationSource.User;
    }
    /**
     * @inheritDoc
     */
    AckUserWrite.prototype.operationForChild = function (childName) {
        if (!this.path.isEmpty()) {
            util_1.assert(this.path.getFront() === childName, 'operationForChild called for unrelated child.');
            return new AckUserWrite(this.path.popFront(), this.affectedTree, this.revert);
        }
        else if (this.affectedTree.value != null) {
            util_1.assert(this.affectedTree.children.isEmpty(), 'affectedTree should not have overlapping affected paths.');
            // All child locations are affected as well; just return same operation.
            return this;
        }
        else {
            var childTree = this.affectedTree.subtree(new Path_1.Path(childName));
            return new AckUserWrite(Path_1.Path.Empty, childTree, this.revert);
        }
    };
    return AckUserWrite;
}());
exports.AckUserWrite = AckUserWrite;



},{"../util/Path":57,"./Operation":30,"@firebase/util":92}],28:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Path_1 = require("../util/Path");
var Operation_1 = require("./Operation");
/**
 * @param {!OperationSource} source
 * @param {!Path} path
 * @constructor
 * @implements {Operation}
 */
var ListenComplete = /** @class */ (function () {
    function ListenComplete(source, path) {
        this.source = source;
        this.path = path;
        /** @inheritDoc */
        this.type = Operation_1.OperationType.LISTEN_COMPLETE;
    }
    ListenComplete.prototype.operationForChild = function (childName) {
        if (this.path.isEmpty()) {
            return new ListenComplete(this.source, Path_1.Path.Empty);
        }
        else {
            return new ListenComplete(this.source, this.path.popFront());
        }
    };
    return ListenComplete;
}());
exports.ListenComplete = ListenComplete;



},{"../util/Path":57,"./Operation":30}],29:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Operation_1 = require("./Operation");
var Overwrite_1 = require("./Overwrite");
var Path_1 = require("../util/Path");
var util_1 = require("@firebase/util");
/**
 * @param {!OperationSource} source
 * @param {!Path} path
 * @param {!ImmutableTree.<!Node>} children
 * @constructor
 * @implements {Operation}
 */
var Merge = /** @class */ (function () {
    function Merge(
    /**@inheritDoc */ source, 
    /**@inheritDoc */ path, 
    /**@inheritDoc */ children) {
        this.source = source;
        this.path = path;
        this.children = children;
        /** @inheritDoc */
        this.type = Operation_1.OperationType.MERGE;
    }
    /**
     * @inheritDoc
     */
    Merge.prototype.operationForChild = function (childName) {
        if (this.path.isEmpty()) {
            var childTree = this.children.subtree(new Path_1.Path(childName));
            if (childTree.isEmpty()) {
                // This child is unaffected
                return null;
            }
            else if (childTree.value) {
                // We have a snapshot for the child in question.  This becomes an overwrite of the child.
                return new Overwrite_1.Overwrite(this.source, Path_1.Path.Empty, childTree.value);
            }
            else {
                // This is a merge at a deeper level
                return new Merge(this.source, Path_1.Path.Empty, childTree);
            }
        }
        else {
            util_1.assert(this.path.getFront() === childName, "Can't get a merge for a child not on the path of the operation");
            return new Merge(this.source, this.path.popFront(), this.children);
        }
    };
    /**
     * @inheritDoc
     */
    Merge.prototype.toString = function () {
        return ('Operation(' +
            this.path +
            ': ' +
            this.source.toString() +
            ' merge: ' +
            this.children.toString() +
            ')');
    };
    return Merge;
}());
exports.Merge = Merge;



},{"../util/Path":57,"./Operation":30,"./Overwrite":31,"@firebase/util":92}],30:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 *
 * @enum
 */
var OperationType;
(function (OperationType) {
    OperationType[OperationType["OVERWRITE"] = 0] = "OVERWRITE";
    OperationType[OperationType["MERGE"] = 1] = "MERGE";
    OperationType[OperationType["ACK_USER_WRITE"] = 2] = "ACK_USER_WRITE";
    OperationType[OperationType["LISTEN_COMPLETE"] = 3] = "LISTEN_COMPLETE";
})(OperationType = exports.OperationType || (exports.OperationType = {}));
/**
 * @param {boolean} fromUser
 * @param {boolean} fromServer
 * @param {?string} queryId
 * @param {boolean} tagged
 * @constructor
 */
var OperationSource = /** @class */ (function () {
    function OperationSource(fromUser, fromServer, queryId, tagged) {
        this.fromUser = fromUser;
        this.fromServer = fromServer;
        this.queryId = queryId;
        this.tagged = tagged;
        util_1.assert(!tagged || fromServer, 'Tagged queries must be from server.');
    }
    /**
     * @const
     * @type {!OperationSource}
     */
    OperationSource.User = new OperationSource(
    /*fromUser=*/ true, false, null, 
    /*tagged=*/ false);
    /**
     * @const
     * @type {!OperationSource}
     */
    OperationSource.Server = new OperationSource(false, 
    /*fromServer=*/ true, null, 
    /*tagged=*/ false);
    /**
     * @param {string} queryId
     * @return {!OperationSource}
     */
    OperationSource.forServerTaggedQuery = function (queryId) {
        return new OperationSource(false, 
        /*fromServer=*/ true, queryId, 
        /*tagged=*/ true);
    };
    return OperationSource;
}());
exports.OperationSource = OperationSource;



},{"@firebase/util":92}],31:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Operation_1 = require("./Operation");
var Path_1 = require("../util/Path");
/**
 * @param {!OperationSource} source
 * @param {!Path} path
 * @param {!Node} snap
 * @constructor
 * @implements {Operation}
 */
var Overwrite = /** @class */ (function () {
    function Overwrite(source, path, snap) {
        this.source = source;
        this.path = path;
        this.snap = snap;
        /** @inheritDoc */
        this.type = Operation_1.OperationType.OVERWRITE;
    }
    Overwrite.prototype.operationForChild = function (childName) {
        if (this.path.isEmpty()) {
            return new Overwrite(this.source, Path_1.Path.Empty, this.snap.getImmediateChild(childName));
        }
        else {
            return new Overwrite(this.source, this.path.popFront(), this.snap);
        }
    };
    return Overwrite;
}());
exports.Overwrite = Overwrite;



},{"../util/Path":57,"./Operation":30}],32:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var util_1 = require("@firebase/util");
var util_2 = require("../util/util");
var SortedMap_1 = require("../util/SortedMap");
var Node_1 = require("./Node");
var snap_1 = require("./snap");
var PriorityIndex_1 = require("./indexes/PriorityIndex");
var KeyIndex_1 = require("./indexes/KeyIndex");
var IndexMap_1 = require("./IndexMap");
var LeafNode_1 = require("./LeafNode");
var comparators_1 = require("./comparators");
// TODO: For memory savings, don't store priorityNode_ if it's empty.
var EMPTY_NODE;
/**
 * ChildrenNode is a class for storing internal nodes in a DataSnapshot
 * (i.e. nodes with children).  It implements Node and stores the
 * list of children in the children property, sorted by child name.
 *
 * @constructor
 * @implements {Node}
 */
var ChildrenNode = /** @class */ (function () {
    /**
     *
     * @param {!SortedMap.<string, !Node>} children_ List of children
     * of this node..
     * @param {?Node} priorityNode_ The priority of this node (as a snapshot node).
     * @param {!IndexMap} indexMap_
     */
    function ChildrenNode(children_, priorityNode_, indexMap_) {
        this.children_ = children_;
        this.priorityNode_ = priorityNode_;
        this.indexMap_ = indexMap_;
        this.lazyHash_ = null;
        /**
         * Note: The only reason we allow null priority is for EMPTY_NODE, since we can't use
         * EMPTY_NODE as the priority of EMPTY_NODE.  We might want to consider making EMPTY_NODE its own
         * class instead of an empty ChildrenNode.
         */
        if (this.priorityNode_) {
            snap_1.validatePriorityNode(this.priorityNode_);
        }
        if (this.children_.isEmpty()) {
            util_1.assert(!this.priorityNode_ || this.priorityNode_.isEmpty(), 'An empty node cannot have a priority');
        }
    }
    Object.defineProperty(ChildrenNode, "EMPTY_NODE", {
        get: function () {
            return (EMPTY_NODE ||
                (EMPTY_NODE = new ChildrenNode(new SortedMap_1.SortedMap(comparators_1.NAME_COMPARATOR), null, IndexMap_1.IndexMap.Default)));
        },
        enumerable: true,
        configurable: true
    });
    /** @inheritDoc */
    ChildrenNode.prototype.isLeafNode = function () {
        return false;
    };
    /** @inheritDoc */
    ChildrenNode.prototype.getPriority = function () {
        return this.priorityNode_ || EMPTY_NODE;
    };
    /** @inheritDoc */
    ChildrenNode.prototype.updatePriority = function (newPriorityNode) {
        if (this.children_.isEmpty()) {
            // Don't allow priorities on empty nodes
            return this;
        }
        else {
            return new ChildrenNode(this.children_, newPriorityNode, this.indexMap_);
        }
    };
    /** @inheritDoc */
    ChildrenNode.prototype.getImmediateChild = function (childName) {
        // Hack to treat priority as a regular child
        if (childName === '.priority') {
            return this.getPriority();
        }
        else {
            var child = this.children_.get(childName);
            return child === null ? EMPTY_NODE : child;
        }
    };
    /** @inheritDoc */
    ChildrenNode.prototype.getChild = function (path) {
        var front = path.getFront();
        if (front === null)
            return this;
        return this.getImmediateChild(front).getChild(path.popFront());
    };
    /** @inheritDoc */
    ChildrenNode.prototype.hasChild = function (childName) {
        return this.children_.get(childName) !== null;
    };
    /** @inheritDoc */
    ChildrenNode.prototype.updateImmediateChild = function (childName, newChildNode) {
        util_1.assert(newChildNode, 'We should always be passing snapshot nodes');
        if (childName === '.priority') {
            return this.updatePriority(newChildNode);
        }
        else {
            var namedNode = new Node_1.NamedNode(childName, newChildNode);
            var newChildren = void 0, newIndexMap = void 0, newPriority = void 0;
            if (newChildNode.isEmpty()) {
                newChildren = this.children_.remove(childName);
                newIndexMap = this.indexMap_.removeFromIndexes(namedNode, this.children_);
            }
            else {
                newChildren = this.children_.insert(childName, newChildNode);
                newIndexMap = this.indexMap_.addToIndexes(namedNode, this.children_);
            }
            newPriority = newChildren.isEmpty() ? EMPTY_NODE : this.priorityNode_;
            return new ChildrenNode(newChildren, newPriority, newIndexMap);
        }
    };
    /** @inheritDoc */
    ChildrenNode.prototype.updateChild = function (path, newChildNode) {
        var front = path.getFront();
        if (front === null) {
            return newChildNode;
        }
        else {
            util_1.assert(path.getFront() !== '.priority' || path.getLength() === 1, '.priority must be the last token in a path');
            var newImmediateChild = this.getImmediateChild(front).updateChild(path.popFront(), newChildNode);
            return this.updateImmediateChild(front, newImmediateChild);
        }
    };
    /** @inheritDoc */
    ChildrenNode.prototype.isEmpty = function () {
        return this.children_.isEmpty();
    };
    /** @inheritDoc */
    ChildrenNode.prototype.numChildren = function () {
        return this.children_.count();
    };
    /** @inheritDoc */
    ChildrenNode.prototype.val = function (exportFormat) {
        if (this.isEmpty())
            return null;
        var obj = {};
        var numKeys = 0, maxKey = 0, allIntegerKeys = true;
        this.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (key, childNode) {
            obj[key] = childNode.val(exportFormat);
            numKeys++;
            if (allIntegerKeys && ChildrenNode.INTEGER_REGEXP_.test(key)) {
                maxKey = Math.max(maxKey, Number(key));
            }
            else {
                allIntegerKeys = false;
            }
        });
        if (!exportFormat && allIntegerKeys && maxKey < 2 * numKeys) {
            // convert to array.
            var array = [];
            for (var key in obj)
                array[key] = obj[key];
            return array;
        }
        else {
            if (exportFormat && !this.getPriority().isEmpty()) {
                obj['.priority'] = this.getPriority().val();
            }
            return obj;
        }
    };
    /** @inheritDoc */
    ChildrenNode.prototype.hash = function () {
        if (this.lazyHash_ === null) {
            var toHash_1 = '';
            if (!this.getPriority().isEmpty())
                toHash_1 +=
                    'priority:' +
                        snap_1.priorityHashText(this.getPriority().val()) +
                        ':';
            this.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (key, childNode) {
                var childHash = childNode.hash();
                if (childHash !== '')
                    toHash_1 += ':' + key + ':' + childHash;
            });
            this.lazyHash_ = toHash_1 === '' ? '' : util_2.sha1(toHash_1);
        }
        return this.lazyHash_;
    };
    /** @inheritDoc */
    ChildrenNode.prototype.getPredecessorChildName = function (childName, childNode, index) {
        var idx = this.resolveIndex_(index);
        if (idx) {
            var predecessor = idx.getPredecessorKey(new Node_1.NamedNode(childName, childNode));
            return predecessor ? predecessor.name : null;
        }
        else {
            return this.children_.getPredecessorKey(childName);
        }
    };
    /**
     * @param {!Index} indexDefinition
     * @return {?string}
     */
    ChildrenNode.prototype.getFirstChildName = function (indexDefinition) {
        var idx = this.resolveIndex_(indexDefinition);
        if (idx) {
            var minKey = idx.minKey();
            return minKey && minKey.name;
        }
        else {
            return this.children_.minKey();
        }
    };
    /**
     * @param {!Index} indexDefinition
     * @return {?NamedNode}
     */
    ChildrenNode.prototype.getFirstChild = function (indexDefinition) {
        var minKey = this.getFirstChildName(indexDefinition);
        if (minKey) {
            return new Node_1.NamedNode(minKey, this.children_.get(minKey));
        }
        else {
            return null;
        }
    };
    /**
     * Given an index, return the key name of the largest value we have, according to that index
     * @param {!Index} indexDefinition
     * @return {?string}
     */
    ChildrenNode.prototype.getLastChildName = function (indexDefinition) {
        var idx = this.resolveIndex_(indexDefinition);
        if (idx) {
            var maxKey = idx.maxKey();
            return maxKey && maxKey.name;
        }
        else {
            return this.children_.maxKey();
        }
    };
    /**
     * @param {!Index} indexDefinition
     * @return {?NamedNode}
     */
    ChildrenNode.prototype.getLastChild = function (indexDefinition) {
        var maxKey = this.getLastChildName(indexDefinition);
        if (maxKey) {
            return new Node_1.NamedNode(maxKey, this.children_.get(maxKey));
        }
        else {
            return null;
        }
    };
    /**
     * @inheritDoc
     */
    ChildrenNode.prototype.forEachChild = function (index, action) {
        var idx = this.resolveIndex_(index);
        if (idx) {
            return idx.inorderTraversal(function (wrappedNode) {
                return action(wrappedNode.name, wrappedNode.node);
            });
        }
        else {
            return this.children_.inorderTraversal(action);
        }
    };
    /**
     * @param {!Index} indexDefinition
     * @return {SortedMapIterator}
     */
    ChildrenNode.prototype.getIterator = function (indexDefinition) {
        return this.getIteratorFrom(indexDefinition.minPost(), indexDefinition);
    };
    /**
     *
     * @param {!NamedNode} startPost
     * @param {!Index} indexDefinition
     * @return {!SortedMapIterator}
     */
    ChildrenNode.prototype.getIteratorFrom = function (startPost, indexDefinition) {
        var idx = this.resolveIndex_(indexDefinition);
        if (idx) {
            return idx.getIteratorFrom(startPost, function (key) { return key; });
        }
        else {
            var iterator = this.children_.getIteratorFrom(startPost.name, Node_1.NamedNode.Wrap);
            var next = iterator.peek();
            while (next != null && indexDefinition.compare(next, startPost) < 0) {
                iterator.getNext();
                next = iterator.peek();
            }
            return iterator;
        }
    };
    /**
     * @param {!Index} indexDefinition
     * @return {!SortedMapIterator}
     */
    ChildrenNode.prototype.getReverseIterator = function (indexDefinition) {
        return this.getReverseIteratorFrom(indexDefinition.maxPost(), indexDefinition);
    };
    /**
     * @param {!NamedNode} endPost
     * @param {!Index} indexDefinition
     * @return {!SortedMapIterator}
     */
    ChildrenNode.prototype.getReverseIteratorFrom = function (endPost, indexDefinition) {
        var idx = this.resolveIndex_(indexDefinition);
        if (idx) {
            return idx.getReverseIteratorFrom(endPost, function (key) {
                return key;
            });
        }
        else {
            var iterator = this.children_.getReverseIteratorFrom(endPost.name, Node_1.NamedNode.Wrap);
            var next = iterator.peek();
            while (next != null && indexDefinition.compare(next, endPost) > 0) {
                iterator.getNext();
                next = iterator.peek();
            }
            return iterator;
        }
    };
    /**
     * @inheritDoc
     */
    ChildrenNode.prototype.compareTo = function (other) {
        if (this.isEmpty()) {
            if (other.isEmpty()) {
                return 0;
            }
            else {
                return -1;
            }
        }
        else if (other.isLeafNode() || other.isEmpty()) {
            return 1;
        }
        else if (other === exports.MAX_NODE) {
            return -1;
        }
        else {
            // Must be another node with children.
            return 0;
        }
    };
    /**
     * @inheritDoc
     */
    ChildrenNode.prototype.withIndex = function (indexDefinition) {
        if (indexDefinition === KeyIndex_1.KEY_INDEX ||
            this.indexMap_.hasIndex(indexDefinition)) {
            return this;
        }
        else {
            var newIndexMap = this.indexMap_.addIndex(indexDefinition, this.children_);
            return new ChildrenNode(this.children_, this.priorityNode_, newIndexMap);
        }
    };
    /**
     * @inheritDoc
     */
    ChildrenNode.prototype.isIndexed = function (index) {
        return index === KeyIndex_1.KEY_INDEX || this.indexMap_.hasIndex(index);
    };
    /**
     * @inheritDoc
     */
    ChildrenNode.prototype.equals = function (other) {
        if (other === this) {
            return true;
        }
        else if (other.isLeafNode()) {
            return false;
        }
        else {
            var otherChildrenNode = other;
            if (!this.getPriority().equals(otherChildrenNode.getPriority())) {
                return false;
            }
            else if (this.children_.count() === otherChildrenNode.children_.count()) {
                var thisIter = this.getIterator(PriorityIndex_1.PRIORITY_INDEX);
                var otherIter = otherChildrenNode.getIterator(PriorityIndex_1.PRIORITY_INDEX);
                var thisCurrent = thisIter.getNext();
                var otherCurrent = otherIter.getNext();
                while (thisCurrent && otherCurrent) {
                    if (thisCurrent.name !== otherCurrent.name ||
                        !thisCurrent.node.equals(otherCurrent.node)) {
                        return false;
                    }
                    thisCurrent = thisIter.getNext();
                    otherCurrent = otherIter.getNext();
                }
                return thisCurrent === null && otherCurrent === null;
            }
            else {
                return false;
            }
        }
    };
    /**
     * Returns a SortedMap ordered by index, or null if the default (by-key) ordering can be used
     * instead.
     *
     * @private
     * @param {!Index} indexDefinition
     * @return {?SortedMap.<NamedNode, Node>}
     */
    ChildrenNode.prototype.resolveIndex_ = function (indexDefinition) {
        if (indexDefinition === KeyIndex_1.KEY_INDEX) {
            return null;
        }
        else {
            return this.indexMap_.get(indexDefinition.toString());
        }
    };
    /**
     * @private
     * @type {RegExp}
     */
    ChildrenNode.INTEGER_REGEXP_ = /^(0|[1-9]\d*)$/;
    return ChildrenNode;
}());
exports.ChildrenNode = ChildrenNode;
/**
 * @constructor
 * @extends {ChildrenNode}
 * @private
 */
var MaxNode = /** @class */ (function (_super) {
    tslib_1.__extends(MaxNode, _super);
    function MaxNode() {
        return _super.call(this, new SortedMap_1.SortedMap(comparators_1.NAME_COMPARATOR), ChildrenNode.EMPTY_NODE, IndexMap_1.IndexMap.Default) || this;
    }
    MaxNode.prototype.compareTo = function (other) {
        if (other === this) {
            return 0;
        }
        else {
            return 1;
        }
    };
    MaxNode.prototype.equals = function (other) {
        // Not that we every compare it, but MAX_NODE is only ever equal to itself
        return other === this;
    };
    MaxNode.prototype.getPriority = function () {
        return this;
    };
    MaxNode.prototype.getImmediateChild = function (childName) {
        return ChildrenNode.EMPTY_NODE;
    };
    MaxNode.prototype.isEmpty = function () {
        return false;
    };
    return MaxNode;
}(ChildrenNode));
exports.MaxNode = MaxNode;
/**
 * Marker that will sort higher than any other snapshot.
 * @type {!MAX_NODE}
 * @const
 */
exports.MAX_NODE = new MaxNode();
Object.defineProperties(Node_1.NamedNode, {
    MIN: {
        value: new Node_1.NamedNode(util_2.MIN_NAME, ChildrenNode.EMPTY_NODE)
    },
    MAX: {
        value: new Node_1.NamedNode(util_2.MAX_NAME, exports.MAX_NODE)
    }
});
/**
 * Reference Extensions
 */
KeyIndex_1.KeyIndex.__EMPTY_NODE = ChildrenNode.EMPTY_NODE;
LeafNode_1.LeafNode.__childrenNodeConstructor = ChildrenNode;
snap_1.setMaxNode(exports.MAX_NODE);
PriorityIndex_1.setMaxNode(exports.MAX_NODE);



},{"../util/SortedMap":59,"../util/util":63,"./IndexMap":33,"./LeafNode":34,"./Node":35,"./comparators":37,"./indexes/KeyIndex":39,"./indexes/PriorityIndex":41,"./snap":44,"@firebase/util":92,"tslib":121}],33:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var childSet_1 = require("./childSet");
var util_2 = require("@firebase/util");
var Node_1 = require("./Node");
var PriorityIndex_1 = require("./indexes/PriorityIndex");
var KeyIndex_1 = require("./indexes/KeyIndex");
var _defaultIndexMap;
var fallbackObject = {};
/**
 *
 * @param {Object.<string, FallbackType|SortedMap.<NamedNode, Node>>} indexes
 * @param {Object.<string, Index>} indexSet
 * @constructor
 */
var IndexMap = /** @class */ (function () {
    function IndexMap(indexes_, indexSet_) {
        this.indexes_ = indexes_;
        this.indexSet_ = indexSet_;
    }
    Object.defineProperty(IndexMap, "Default", {
        /**
         * The default IndexMap for nodes without a priority
         * @type {!IndexMap}
         * @const
         */
        get: function () {
            util_1.assert(fallbackObject && PriorityIndex_1.PRIORITY_INDEX, 'ChildrenNode.ts has not been loaded');
            _defaultIndexMap =
                _defaultIndexMap ||
                    new IndexMap({ '.priority': fallbackObject }, { '.priority': PriorityIndex_1.PRIORITY_INDEX });
            return _defaultIndexMap;
        },
        enumerable: true,
        configurable: true
    });
    /**
     *
     * @param {!string} indexKey
     * @return {?SortedMap.<NamedNode, Node>}
     */
    IndexMap.prototype.get = function (indexKey) {
        var sortedMap = util_2.safeGet(this.indexes_, indexKey);
        if (!sortedMap)
            throw new Error('No index defined for ' + indexKey);
        if (sortedMap === fallbackObject) {
            // The index exists, but it falls back to just name comparison. Return null so that the calling code uses the
            // regular child map
            return null;
        }
        else {
            return sortedMap;
        }
    };
    /**
     * @param {!Index} indexDefinition
     * @return {boolean}
     */
    IndexMap.prototype.hasIndex = function (indexDefinition) {
        return util_2.contains(this.indexSet_, indexDefinition.toString());
    };
    /**
     * @param {!Index} indexDefinition
     * @param {!SortedMap.<string, !Node>} existingChildren
     * @return {!IndexMap}
     */
    IndexMap.prototype.addIndex = function (indexDefinition, existingChildren) {
        util_1.assert(indexDefinition !== KeyIndex_1.KEY_INDEX, "KeyIndex always exists and isn't meant to be added to the IndexMap.");
        var childList = [];
        var sawIndexedValue = false;
        var iter = existingChildren.getIterator(Node_1.NamedNode.Wrap);
        var next = iter.getNext();
        while (next) {
            sawIndexedValue =
                sawIndexedValue || indexDefinition.isDefinedOn(next.node);
            childList.push(next);
            next = iter.getNext();
        }
        var newIndex;
        if (sawIndexedValue) {
            newIndex = childSet_1.buildChildSet(childList, indexDefinition.getCompare());
        }
        else {
            newIndex = fallbackObject;
        }
        var indexName = indexDefinition.toString();
        var newIndexSet = util_2.clone(this.indexSet_);
        newIndexSet[indexName] = indexDefinition;
        var newIndexes = util_2.clone(this.indexes_);
        newIndexes[indexName] = newIndex;
        return new IndexMap(newIndexes, newIndexSet);
    };
    /**
     * Ensure that this node is properly tracked in any indexes that we're maintaining
     * @param {!NamedNode} namedNode
     * @param {!SortedMap.<string, !Node>} existingChildren
     * @return {!IndexMap}
     */
    IndexMap.prototype.addToIndexes = function (namedNode, existingChildren) {
        var _this = this;
        var newIndexes = util_2.map(this.indexes_, function (indexedChildren, indexName) {
            var index = util_2.safeGet(_this.indexSet_, indexName);
            util_1.assert(index, 'Missing index implementation for ' + indexName);
            if (indexedChildren === fallbackObject) {
                // Check to see if we need to index everything
                if (index.isDefinedOn(namedNode.node)) {
                    // We need to build this index
                    var childList = [];
                    var iter = existingChildren.getIterator(Node_1.NamedNode.Wrap);
                    var next = iter.getNext();
                    while (next) {
                        if (next.name != namedNode.name) {
                            childList.push(next);
                        }
                        next = iter.getNext();
                    }
                    childList.push(namedNode);
                    return childSet_1.buildChildSet(childList, index.getCompare());
                }
                else {
                    // No change, this remains a fallback
                    return fallbackObject;
                }
            }
            else {
                var existingSnap = existingChildren.get(namedNode.name);
                var newChildren = indexedChildren;
                if (existingSnap) {
                    newChildren = newChildren.remove(new Node_1.NamedNode(namedNode.name, existingSnap));
                }
                return newChildren.insert(namedNode, namedNode.node);
            }
        });
        return new IndexMap(newIndexes, this.indexSet_);
    };
    /**
     * Create a new IndexMap instance with the given value removed
     * @param {!NamedNode} namedNode
     * @param {!SortedMap.<string, !Node>} existingChildren
     * @return {!IndexMap}
     */
    IndexMap.prototype.removeFromIndexes = function (namedNode, existingChildren) {
        var newIndexes = util_2.map(this.indexes_, function (indexedChildren) {
            if (indexedChildren === fallbackObject) {
                // This is the fallback. Just return it, nothing to do in this case
                return indexedChildren;
            }
            else {
                var existingSnap = existingChildren.get(namedNode.name);
                if (existingSnap) {
                    return indexedChildren.remove(new Node_1.NamedNode(namedNode.name, existingSnap));
                }
                else {
                    // No record of this child
                    return indexedChildren;
                }
            }
        });
        return new IndexMap(newIndexes, this.indexSet_);
    };
    return IndexMap;
}());
exports.IndexMap = IndexMap;



},{"./Node":35,"./childSet":36,"./indexes/KeyIndex":39,"./indexes/PriorityIndex":41,"@firebase/util":92}],34:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("../util/util");
var snap_1 = require("./snap");
var __childrenNodeConstructor;
/**
 * LeafNode is a class for storing leaf nodes in a DataSnapshot.  It
 * implements Node and stores the value of the node (a string,
 * number, or boolean) accessible via getValue().
 */
var LeafNode = /** @class */ (function () {
    /**
     * @implements {Node}
     * @param {!(string|number|boolean|Object)} value_ The value to store in this leaf node.
     *                                         The object type is possible in the event of a deferred value
     * @param {!Node=} priorityNode_ The priority of this node.
     */
    function LeafNode(value_, priorityNode_) {
        if (priorityNode_ === void 0) { priorityNode_ = LeafNode.__childrenNodeConstructor.EMPTY_NODE; }
        this.value_ = value_;
        this.priorityNode_ = priorityNode_;
        this.lazyHash_ = null;
        util_1.assert(this.value_ !== undefined && this.value_ !== null, "LeafNode shouldn't be created with null/undefined value.");
        snap_1.validatePriorityNode(this.priorityNode_);
    }
    Object.defineProperty(LeafNode, "__childrenNodeConstructor", {
        get: function () {
            return __childrenNodeConstructor;
        },
        set: function (val) {
            __childrenNodeConstructor = val;
        },
        enumerable: true,
        configurable: true
    });
    /** @inheritDoc */
    LeafNode.prototype.isLeafNode = function () {
        return true;
    };
    /** @inheritDoc */
    LeafNode.prototype.getPriority = function () {
        return this.priorityNode_;
    };
    /** @inheritDoc */
    LeafNode.prototype.updatePriority = function (newPriorityNode) {
        return new LeafNode(this.value_, newPriorityNode);
    };
    /** @inheritDoc */
    LeafNode.prototype.getImmediateChild = function (childName) {
        // Hack to treat priority as a regular child
        if (childName === '.priority') {
            return this.priorityNode_;
        }
        else {
            return LeafNode.__childrenNodeConstructor.EMPTY_NODE;
        }
    };
    /** @inheritDoc */
    LeafNode.prototype.getChild = function (path) {
        if (path.isEmpty()) {
            return this;
        }
        else if (path.getFront() === '.priority') {
            return this.priorityNode_;
        }
        else {
            return LeafNode.__childrenNodeConstructor.EMPTY_NODE;
        }
    };
    /**
     * @inheritDoc
     */
    LeafNode.prototype.hasChild = function () {
        return false;
    };
    /** @inheritDoc */
    LeafNode.prototype.getPredecessorChildName = function (childName, childNode) {
        return null;
    };
    /** @inheritDoc */
    LeafNode.prototype.updateImmediateChild = function (childName, newChildNode) {
        if (childName === '.priority') {
            return this.updatePriority(newChildNode);
        }
        else if (newChildNode.isEmpty() && childName !== '.priority') {
            return this;
        }
        else {
            return LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateImmediateChild(childName, newChildNode).updatePriority(this.priorityNode_);
        }
    };
    /** @inheritDoc */
    LeafNode.prototype.updateChild = function (path, newChildNode) {
        var front = path.getFront();
        if (front === null) {
            return newChildNode;
        }
        else if (newChildNode.isEmpty() && front !== '.priority') {
            return this;
        }
        else {
            util_1.assert(front !== '.priority' || path.getLength() === 1, '.priority must be the last token in a path');
            return this.updateImmediateChild(front, LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateChild(path.popFront(), newChildNode));
        }
    };
    /** @inheritDoc */
    LeafNode.prototype.isEmpty = function () {
        return false;
    };
    /** @inheritDoc */
    LeafNode.prototype.numChildren = function () {
        return 0;
    };
    /** @inheritDoc */
    LeafNode.prototype.forEachChild = function (index, action) {
        return false;
    };
    /**
     * @inheritDoc
     */
    LeafNode.prototype.val = function (exportFormat) {
        if (exportFormat && !this.getPriority().isEmpty())
            return {
                '.value': this.getValue(),
                '.priority': this.getPriority().val()
            };
        else
            return this.getValue();
    };
    /** @inheritDoc */
    LeafNode.prototype.hash = function () {
        if (this.lazyHash_ === null) {
            var toHash = '';
            if (!this.priorityNode_.isEmpty())
                toHash +=
                    'priority:' +
                        snap_1.priorityHashText(this.priorityNode_.val()) +
                        ':';
            var type = typeof this.value_;
            toHash += type + ':';
            if (type === 'number') {
                toHash += util_2.doubleToIEEE754String(this.value_);
            }
            else {
                toHash += this.value_;
            }
            this.lazyHash_ = util_2.sha1(toHash);
        }
        return this.lazyHash_;
    };
    /**
     * Returns the value of the leaf node.
     * @return {Object|string|number|boolean} The value of the node.
     */
    LeafNode.prototype.getValue = function () {
        return this.value_;
    };
    /**
     * @inheritDoc
     */
    LeafNode.prototype.compareTo = function (other) {
        if (other === LeafNode.__childrenNodeConstructor.EMPTY_NODE) {
            return 1;
        }
        else if (other instanceof LeafNode.__childrenNodeConstructor) {
            return -1;
        }
        else {
            util_1.assert(other.isLeafNode(), 'Unknown node type');
            return this.compareToLeafNode_(other);
        }
    };
    /**
     * Comparison specifically for two leaf nodes
     * @param {!LeafNode} otherLeaf
     * @return {!number}
     * @private
     */
    LeafNode.prototype.compareToLeafNode_ = function (otherLeaf) {
        var otherLeafType = typeof otherLeaf.value_;
        var thisLeafType = typeof this.value_;
        var otherIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(otherLeafType);
        var thisIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(thisLeafType);
        util_1.assert(otherIndex >= 0, 'Unknown leaf type: ' + otherLeafType);
        util_1.assert(thisIndex >= 0, 'Unknown leaf type: ' + thisLeafType);
        if (otherIndex === thisIndex) {
            // Same type, compare values
            if (thisLeafType === 'object') {
                // Deferred value nodes are all equal, but we should also never get to this point...
                return 0;
            }
            else {
                // Note that this works because true > false, all others are number or string comparisons
                if (this.value_ < otherLeaf.value_) {
                    return -1;
                }
                else if (this.value_ === otherLeaf.value_) {
                    return 0;
                }
                else {
                    return 1;
                }
            }
        }
        else {
            return thisIndex - otherIndex;
        }
    };
    /**
     * @inheritDoc
     */
    LeafNode.prototype.withIndex = function () {
        return this;
    };
    /**
     * @inheritDoc
     */
    LeafNode.prototype.isIndexed = function () {
        return true;
    };
    /**
     * @inheritDoc
     */
    LeafNode.prototype.equals = function (other) {
        /**
         * @inheritDoc
         */
        if (other === this) {
            return true;
        }
        else if (other.isLeafNode()) {
            var otherLeaf = other;
            return (this.value_ === otherLeaf.value_ &&
                this.priorityNode_.equals(otherLeaf.priorityNode_));
        }
        else {
            return false;
        }
    };
    /**
     * The sort order for comparing leaf nodes of different types. If two leaf nodes have
     * the same type, the comparison falls back to their value
     * @type {Array.<!string>}
     * @const
     */
    LeafNode.VALUE_TYPE_ORDER = ['object', 'boolean', 'number', 'string'];
    return LeafNode;
}());
exports.LeafNode = LeafNode;



},{"../util/util":63,"./snap":44,"@firebase/util":92}],35:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 *
 * @param {!string} name
 * @param {!Node} node
 * @constructor
 * @struct
 */
var NamedNode = /** @class */ (function () {
    function NamedNode(name, node) {
        this.name = name;
        this.node = node;
    }
    /**
     *
     * @param {!string} name
     * @param {!Node} node
     * @return {NamedNode}
     */
    NamedNode.Wrap = function (name, node) {
        return new NamedNode(name, node);
    };
    return NamedNode;
}());
exports.NamedNode = NamedNode;



},{}],36:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var SortedMap_1 = require("../util/SortedMap");
var SortedMap_2 = require("../util/SortedMap");
var LOG_2 = Math.log(2);
/**
 * @constructor
 */
var Base12Num = /** @class */ (function () {
    /**
     * @param {number} length
     */
    function Base12Num(length) {
        var logBase2 = function (num) {
            return parseInt((Math.log(num) / LOG_2), 10);
        };
        var bitMask = function (bits) { return parseInt(Array(bits + 1).join('1'), 2); };
        this.count = logBase2(length + 1);
        this.current_ = this.count - 1;
        var mask = bitMask(this.count);
        this.bits_ = (length + 1) & mask;
    }
    /**
     * @return {boolean}
     */
    Base12Num.prototype.nextBitIsOne = function () {
        //noinspection JSBitwiseOperatorUsage
        var result = !(this.bits_ & (0x1 << this.current_));
        this.current_--;
        return result;
    };
    return Base12Num;
}());
/**
 * Takes a list of child nodes and constructs a SortedSet using the given comparison
 * function
 *
 * Uses the algorithm described in the paper linked here:
 * http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.46.1458
 *
 * @template K, V
 * @param {Array.<!NamedNode>} childList Unsorted list of children
 * @param {function(!NamedNode, !NamedNode):number} cmp The comparison method to be used
 * @param {(function(NamedNode):K)=} keyFn An optional function to extract K from a node wrapper, if K's
 *                                                        type is not NamedNode
 * @param {(function(K, K):number)=} mapSortFn An optional override for comparator used by the generated sorted map
 * @return {SortedMap.<K, V>}
 */
exports.buildChildSet = function (childList, cmp, keyFn, mapSortFn) {
    childList.sort(cmp);
    var buildBalancedTree = function (low, high) {
        var length = high - low;
        var namedNode;
        var key;
        if (length == 0) {
            return null;
        }
        else if (length == 1) {
            namedNode = childList[low];
            key = keyFn ? keyFn(namedNode) : namedNode;
            return new SortedMap_1.LLRBNode(key, namedNode.node, SortedMap_1.LLRBNode.BLACK, null, null);
        }
        else {
            var middle = parseInt((length / 2), 10) + low;
            var left = buildBalancedTree(low, middle);
            var right = buildBalancedTree(middle + 1, high);
            namedNode = childList[middle];
            key = keyFn ? keyFn(namedNode) : namedNode;
            return new SortedMap_1.LLRBNode(key, namedNode.node, SortedMap_1.LLRBNode.BLACK, left, right);
        }
    };
    var buildFrom12Array = function (base12) {
        var node = null;
        var root = null;
        var index = childList.length;
        var buildPennant = function (chunkSize, color) {
            var low = index - chunkSize;
            var high = index;
            index -= chunkSize;
            var childTree = buildBalancedTree(low + 1, high);
            var namedNode = childList[low];
            var key = keyFn ? keyFn(namedNode) : namedNode;
            attachPennant(new SortedMap_1.LLRBNode(key, namedNode.node, color, null, childTree));
        };
        var attachPennant = function (pennant) {
            if (node) {
                node.left = pennant;
                node = pennant;
            }
            else {
                root = pennant;
                node = pennant;
            }
        };
        for (var i = 0; i < base12.count; ++i) {
            var isOne = base12.nextBitIsOne();
            // The number of nodes taken in each slice is 2^(arr.length - (i + 1))
            var chunkSize = Math.pow(2, base12.count - (i + 1));
            if (isOne) {
                buildPennant(chunkSize, SortedMap_1.LLRBNode.BLACK);
            }
            else {
                // current == 2
                buildPennant(chunkSize, SortedMap_1.LLRBNode.BLACK);
                buildPennant(chunkSize, SortedMap_1.LLRBNode.RED);
            }
        }
        return root;
    };
    var base12 = new Base12Num(childList.length);
    var root = buildFrom12Array(base12);
    return new SortedMap_2.SortedMap(mapSortFn || cmp, root);
};



},{"../util/SortedMap":59}],37:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("../util/util");
function NAME_ONLY_COMPARATOR(left, right) {
    return util_1.nameCompare(left.name, right.name);
}
exports.NAME_ONLY_COMPARATOR = NAME_ONLY_COMPARATOR;
function NAME_COMPARATOR(left, right) {
    return util_1.nameCompare(left, right);
}
exports.NAME_COMPARATOR = NAME_COMPARATOR;



},{"../util/util":63}],38:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Node_1 = require("../Node");
var util_1 = require("../../util/util");
/**
 *
 * @constructor
 */
var Index = /** @class */ (function () {
    function Index() {
    }
    /**
     * @return {function(!NamedNode, !NamedNode):number} A standalone comparison function for
     * this index
     */
    Index.prototype.getCompare = function () {
        return this.compare.bind(this);
    };
    /**
     * Given a before and after value for a node, determine if the indexed value has changed. Even if they are different,
     * it's possible that the changes are isolated to parts of the snapshot that are not indexed.
     *
     * @param {!Node} oldNode
     * @param {!Node} newNode
     * @return {boolean} True if the portion of the snapshot being indexed changed between oldNode and newNode
     */
    Index.prototype.indexedValueChanged = function (oldNode, newNode) {
        var oldWrapped = new Node_1.NamedNode(util_1.MIN_NAME, oldNode);
        var newWrapped = new Node_1.NamedNode(util_1.MIN_NAME, newNode);
        return this.compare(oldWrapped, newWrapped) !== 0;
    };
    /**
     * @return {!NamedNode} a node wrapper that will sort equal to or less than
     * any other node wrapper, using this index
     */
    Index.prototype.minPost = function () {
        return Node_1.NamedNode.MIN;
    };
    return Index;
}());
exports.Index = Index;



},{"../../util/util":63,"../Node":35}],39:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var Index_1 = require("./Index");
var Node_1 = require("../Node");
var util_1 = require("../../util/util");
var util_2 = require("@firebase/util");
var __EMPTY_NODE;
var KeyIndex = /** @class */ (function (_super) {
    tslib_1.__extends(KeyIndex, _super);
    function KeyIndex() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    Object.defineProperty(KeyIndex, "__EMPTY_NODE", {
        get: function () {
            return __EMPTY_NODE;
        },
        set: function (val) {
            __EMPTY_NODE = val;
        },
        enumerable: true,
        configurable: true
    });
    /**
     * @inheritDoc
     */
    KeyIndex.prototype.compare = function (a, b) {
        return util_1.nameCompare(a.name, b.name);
    };
    /**
     * @inheritDoc
     */
    KeyIndex.prototype.isDefinedOn = function (node) {
        // We could probably return true here (since every node has a key), but it's never called
        // so just leaving unimplemented for now.
        throw util_2.assertionError('KeyIndex.isDefinedOn not expected to be called.');
    };
    /**
     * @inheritDoc
     */
    KeyIndex.prototype.indexedValueChanged = function (oldNode, newNode) {
        return false; // The key for a node never changes.
    };
    /**
     * @inheritDoc
     */
    KeyIndex.prototype.minPost = function () {
        return Node_1.NamedNode.MIN;
    };
    /**
     * @inheritDoc
     */
    KeyIndex.prototype.maxPost = function () {
        // TODO: This should really be created once and cached in a static property, but
        // NamedNode isn't defined yet, so I can't use it in a static.  Bleh.
        return new Node_1.NamedNode(util_1.MAX_NAME, __EMPTY_NODE);
    };
    /**
     * @param {*} indexValue
     * @param {string} name
     * @return {!NamedNode}
     */
    KeyIndex.prototype.makePost = function (indexValue, name) {
        util_2.assert(typeof indexValue === 'string', 'KeyIndex indexValue must always be a string.');
        // We just use empty node, but it'll never be compared, since our comparator only looks at name.
        return new Node_1.NamedNode(indexValue, __EMPTY_NODE);
    };
    /**
     * @return {!string} String representation for inclusion in a query spec
     */
    KeyIndex.prototype.toString = function () {
        return '.key';
    };
    return KeyIndex;
}(Index_1.Index));
exports.KeyIndex = KeyIndex;
exports.KEY_INDEX = new KeyIndex();



},{"../../util/util":63,"../Node":35,"./Index":38,"@firebase/util":92,"tslib":121}],40:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var util_1 = require("@firebase/util");
var util_2 = require("../../util/util");
var Index_1 = require("./Index");
var ChildrenNode_1 = require("../ChildrenNode");
var Node_1 = require("../Node");
var nodeFromJSON_1 = require("../nodeFromJSON");
/**
 * @param {!Path} indexPath
 * @constructor
 * @extends {Index}
 */
var PathIndex = /** @class */ (function (_super) {
    tslib_1.__extends(PathIndex, _super);
    function PathIndex(indexPath_) {
        var _this = _super.call(this) || this;
        _this.indexPath_ = indexPath_;
        util_1.assert(!indexPath_.isEmpty() && indexPath_.getFront() !== '.priority', "Can't create PathIndex with empty path or .priority key");
        return _this;
    }
    /**
     * @param {!Node} snap
     * @return {!Node}
     * @protected
     */
    PathIndex.prototype.extractChild = function (snap) {
        return snap.getChild(this.indexPath_);
    };
    /**
     * @inheritDoc
     */
    PathIndex.prototype.isDefinedOn = function (node) {
        return !node.getChild(this.indexPath_).isEmpty();
    };
    /**
     * @inheritDoc
     */
    PathIndex.prototype.compare = function (a, b) {
        var aChild = this.extractChild(a.node);
        var bChild = this.extractChild(b.node);
        var indexCmp = aChild.compareTo(bChild);
        if (indexCmp === 0) {
            return util_2.nameCompare(a.name, b.name);
        }
        else {
            return indexCmp;
        }
    };
    /**
     * @inheritDoc
     */
    PathIndex.prototype.makePost = function (indexValue, name) {
        var valueNode = nodeFromJSON_1.nodeFromJSON(indexValue);
        var node = ChildrenNode_1.ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_, valueNode);
        return new Node_1.NamedNode(name, node);
    };
    /**
     * @inheritDoc
     */
    PathIndex.prototype.maxPost = function () {
        var node = ChildrenNode_1.ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_, ChildrenNode_1.MAX_NODE);
        return new Node_1.NamedNode(util_2.MAX_NAME, node);
    };
    /**
     * @inheritDoc
     */
    PathIndex.prototype.toString = function () {
        return this.indexPath_.slice().join('/');
    };
    return PathIndex;
}(Index_1.Index));
exports.PathIndex = PathIndex;



},{"../../util/util":63,"../ChildrenNode":32,"../Node":35,"../nodeFromJSON":43,"./Index":38,"@firebase/util":92,"tslib":121}],41:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var Index_1 = require("./Index");
var util_1 = require("../../util/util");
var Node_1 = require("../Node");
var LeafNode_1 = require("../LeafNode");
var nodeFromJSON;
var MAX_NODE;
function setNodeFromJSON(val) {
    nodeFromJSON = val;
}
exports.setNodeFromJSON = setNodeFromJSON;
function setMaxNode(val) {
    MAX_NODE = val;
}
exports.setMaxNode = setMaxNode;
/**
 * @constructor
 * @extends {Index}
 * @private
 */
var PriorityIndex = /** @class */ (function (_super) {
    tslib_1.__extends(PriorityIndex, _super);
    function PriorityIndex() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    /**
     * @inheritDoc
     */
    PriorityIndex.prototype.compare = function (a, b) {
        var aPriority = a.node.getPriority();
        var bPriority = b.node.getPriority();
        var indexCmp = aPriority.compareTo(bPriority);
        if (indexCmp === 0) {
            return util_1.nameCompare(a.name, b.name);
        }
        else {
            return indexCmp;
        }
    };
    /**
     * @inheritDoc
     */
    PriorityIndex.prototype.isDefinedOn = function (node) {
        return !node.getPriority().isEmpty();
    };
    /**
     * @inheritDoc
     */
    PriorityIndex.prototype.indexedValueChanged = function (oldNode, newNode) {
        return !oldNode.getPriority().equals(newNode.getPriority());
    };
    /**
     * @inheritDoc
     */
    PriorityIndex.prototype.minPost = function () {
        return Node_1.NamedNode.MIN;
    };
    /**
     * @inheritDoc
     */
    PriorityIndex.prototype.maxPost = function () {
        return new Node_1.NamedNode(util_1.MAX_NAME, new LeafNode_1.LeafNode('[PRIORITY-POST]', MAX_NODE));
    };
    /**
     * @param {*} indexValue
     * @param {string} name
     * @return {!NamedNode}
     */
    PriorityIndex.prototype.makePost = function (indexValue, name) {
        var priorityNode = nodeFromJSON(indexValue);
        return new Node_1.NamedNode(name, new LeafNode_1.LeafNode('[PRIORITY-POST]', priorityNode));
    };
    /**
     * @return {!string} String representation for inclusion in a query spec
     */
    PriorityIndex.prototype.toString = function () {
        return '.priority';
    };
    return PriorityIndex;
}(Index_1.Index));
exports.PriorityIndex = PriorityIndex;
exports.PRIORITY_INDEX = new PriorityIndex();



},{"../../util/util":63,"../LeafNode":34,"../Node":35,"./Index":38,"tslib":121}],42:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var Index_1 = require("./Index");
var Node_1 = require("../Node");
var util_1 = require("../../util/util");
var nodeFromJSON_1 = require("../nodeFromJSON");
/**
 * @constructor
 * @extends {Index}
 * @private
 */
var ValueIndex = /** @class */ (function (_super) {
    tslib_1.__extends(ValueIndex, _super);
    function ValueIndex() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    /**
     * @inheritDoc
     */
    ValueIndex.prototype.compare = function (a, b) {
        var indexCmp = a.node.compareTo(b.node);
        if (indexCmp === 0) {
            return util_1.nameCompare(a.name, b.name);
        }
        else {
            return indexCmp;
        }
    };
    /**
     * @inheritDoc
     */
    ValueIndex.prototype.isDefinedOn = function (node) {
        return true;
    };
    /**
     * @inheritDoc
     */
    ValueIndex.prototype.indexedValueChanged = function (oldNode, newNode) {
        return !oldNode.equals(newNode);
    };
    /**
     * @inheritDoc
     */
    ValueIndex.prototype.minPost = function () {
        return Node_1.NamedNode.MIN;
    };
    /**
     * @inheritDoc
     */
    ValueIndex.prototype.maxPost = function () {
        return Node_1.NamedNode.MAX;
    };
    /**
     * @param {*} indexValue
     * @param {string} name
     * @return {!NamedNode}
     */
    ValueIndex.prototype.makePost = function (indexValue, name) {
        var valueNode = nodeFromJSON_1.nodeFromJSON(indexValue);
        return new Node_1.NamedNode(name, valueNode);
    };
    /**
     * @return {!string} String representation for inclusion in a query spec
     */
    ValueIndex.prototype.toString = function () {
        return '.value';
    };
    return ValueIndex;
}(Index_1.Index));
exports.ValueIndex = ValueIndex;
exports.VALUE_INDEX = new ValueIndex();



},{"../../util/util":63,"../Node":35,"../nodeFromJSON":43,"./Index":38,"tslib":121}],43:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var ChildrenNode_1 = require("./ChildrenNode");
var LeafNode_1 = require("./LeafNode");
var Node_1 = require("./Node");
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
var childSet_1 = require("./childSet");
var comparators_1 = require("./comparators");
var IndexMap_1 = require("./IndexMap");
var PriorityIndex_1 = require("./indexes/PriorityIndex");
var USE_HINZE = true;
/**
 * Constructs a snapshot node representing the passed JSON and returns it.
 * @param {*} json JSON to create a node for.
 * @param {?string|?number=} priority Optional priority to use.  This will be ignored if the
 * passed JSON contains a .priority property.
 * @return {!Node}
 */
function nodeFromJSON(json, priority) {
    if (priority === void 0) { priority = null; }
    if (json === null) {
        return ChildrenNode_1.ChildrenNode.EMPTY_NODE;
    }
    if (typeof json === 'object' && '.priority' in json) {
        priority = json['.priority'];
    }
    util_2.assert(priority === null ||
        typeof priority === 'string' ||
        typeof priority === 'number' ||
        (typeof priority === 'object' && '.sv' in priority), 'Invalid priority type found: ' + typeof priority);
    if (typeof json === 'object' && '.value' in json && json['.value'] !== null) {
        json = json['.value'];
    }
    // Valid leaf nodes include non-objects or server-value wrapper objects
    if (typeof json !== 'object' || '.sv' in json) {
        var jsonLeaf = json;
        return new LeafNode_1.LeafNode(jsonLeaf, nodeFromJSON(priority));
    }
    if (!(json instanceof Array) && USE_HINZE) {
        var children_1 = [];
        var childrenHavePriority_1 = false;
        var hinzeJsonObj_1 = json;
        util_1.forEach(hinzeJsonObj_1, function (key, child) {
            if (typeof key !== 'string' || key.substring(0, 1) !== '.') {
                // Ignore metadata nodes
                var childNode = nodeFromJSON(hinzeJsonObj_1[key]);
                if (!childNode.isEmpty()) {
                    childrenHavePriority_1 =
                        childrenHavePriority_1 || !childNode.getPriority().isEmpty();
                    children_1.push(new Node_1.NamedNode(key, childNode));
                }
            }
        });
        if (children_1.length == 0) {
            return ChildrenNode_1.ChildrenNode.EMPTY_NODE;
        }
        var childSet = childSet_1.buildChildSet(children_1, comparators_1.NAME_ONLY_COMPARATOR, function (namedNode) { return namedNode.name; }, comparators_1.NAME_COMPARATOR);
        if (childrenHavePriority_1) {
            var sortedChildSet = childSet_1.buildChildSet(children_1, PriorityIndex_1.PRIORITY_INDEX.getCompare());
            return new ChildrenNode_1.ChildrenNode(childSet, nodeFromJSON(priority), new IndexMap_1.IndexMap({ '.priority': sortedChildSet }, { '.priority': PriorityIndex_1.PRIORITY_INDEX }));
        }
        else {
            return new ChildrenNode_1.ChildrenNode(childSet, nodeFromJSON(priority), IndexMap_1.IndexMap.Default);
        }
    }
    else {
        var node_1 = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
        var jsonObj_1 = json;
        util_1.forEach(jsonObj_1, function (key, childData) {
            if (util_1.contains(jsonObj_1, key)) {
                if (key.substring(0, 1) !== '.') {
                    // ignore metadata nodes.
                    var childNode = nodeFromJSON(childData);
                    if (childNode.isLeafNode() || !childNode.isEmpty())
                        node_1 = node_1.updateImmediateChild(key, childNode);
                }
            }
        });
        return node_1.updatePriority(nodeFromJSON(priority));
    }
}
exports.nodeFromJSON = nodeFromJSON;
PriorityIndex_1.setNodeFromJSON(nodeFromJSON);



},{"./ChildrenNode":32,"./IndexMap":33,"./LeafNode":34,"./Node":35,"./childSet":36,"./comparators":37,"./indexes/PriorityIndex":41,"@firebase/util":92}],44:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("../util/util");
var util_3 = require("@firebase/util");
var MAX_NODE;
function setMaxNode(val) {
    MAX_NODE = val;
}
exports.setMaxNode = setMaxNode;
/**
 * @param {(!string|!number)} priority
 * @return {!string}
 */
exports.priorityHashText = function (priority) {
    if (typeof priority === 'number')
        return 'number:' + util_2.doubleToIEEE754String(priority);
    else
        return 'string:' + priority;
};
/**
 * Validates that a priority snapshot Node is valid.
 *
 * @param {!Node} priorityNode
 */
exports.validatePriorityNode = function (priorityNode) {
    if (priorityNode.isLeafNode()) {
        var val = priorityNode.val();
        util_1.assert(typeof val === 'string' ||
            typeof val === 'number' ||
            (typeof val === 'object' && util_3.contains(val, '.sv')), 'Priority must be a string or number.');
    }
    else {
        util_1.assert(priorityNode === MAX_NODE || priorityNode.isEmpty(), 'priority of unexpected type.');
    }
    // Don't call getPriority() on MAX_NODE to avoid hitting assertion.
    util_1.assert(priorityNode === MAX_NODE || priorityNode.getPriority().isEmpty(), "Priority nodes can't have a priority of their own.");
};



},{"../util/util":63,"@firebase/util":92}],45:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
/**
 * Tracks a collection of stats.
 *
 * @constructor
 */
var StatsCollection = /** @class */ (function () {
    function StatsCollection() {
        this.counters_ = {};
    }
    StatsCollection.prototype.incrementCounter = function (name, amount) {
        if (amount === void 0) { amount = 1; }
        if (!util_2.contains(this.counters_, name))
            this.counters_[name] = 0;
        this.counters_[name] += amount;
    };
    StatsCollection.prototype.get = function () {
        return util_1.deepCopy(this.counters_);
    };
    return StatsCollection;
}());
exports.StatsCollection = StatsCollection;



},{"@firebase/util":92}],46:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 * Returns the delta from the previous call to get stats.
 *
 * @param collection_ The collection to "listen" to.
 * @constructor
 */
var StatsListener = /** @class */ (function () {
    function StatsListener(collection_) {
        this.collection_ = collection_;
        this.last_ = null;
    }
    StatsListener.prototype.get = function () {
        var newStats = this.collection_.get();
        var delta = util_1.clone(newStats);
        if (this.last_) {
            util_1.forEach(this.last_, function (stat, value) {
                delta[stat] = delta[stat] - value;
            });
        }
        this.last_ = newStats;
        return delta;
    };
    return StatsListener;
}());
exports.StatsListener = StatsListener;



},{"@firebase/util":92}],47:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var StatsCollection_1 = require("./StatsCollection");
var StatsManager = /** @class */ (function () {
    function StatsManager() {
    }
    StatsManager.getCollection = function (repoInfo) {
        var hashString = repoInfo.toString();
        if (!this.collections_[hashString]) {
            this.collections_[hashString] = new StatsCollection_1.StatsCollection();
        }
        return this.collections_[hashString];
    };
    StatsManager.getOrCreateReporter = function (repoInfo, creatorFunction) {
        var hashString = repoInfo.toString();
        if (!this.reporters_[hashString]) {
            this.reporters_[hashString] = creatorFunction();
        }
        return this.reporters_[hashString];
    };
    StatsManager.collections_ = {};
    StatsManager.reporters_ = {};
    return StatsManager;
}());
exports.StatsManager = StatsManager;



},{"./StatsCollection":45}],48:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("../util/util");
var StatsListener_1 = require("./StatsListener");
// Assuming some apps may have a short amount of time on page, and a bulk of firebase operations probably
// happen on page load, we try to report our first set of stats pretty quickly, but we wait at least 10
// seconds to try to ensure the Firebase connection is established / settled.
var FIRST_STATS_MIN_TIME = 10 * 1000;
var FIRST_STATS_MAX_TIME = 30 * 1000;
// We'll continue to report stats on average every 5 minutes.
var REPORT_STATS_INTERVAL = 5 * 60 * 1000;
/**
 * @constructor
 */
var StatsReporter = /** @class */ (function () {
    /**
     * @param collection
     * @param server_
     */
    function StatsReporter(collection, server_) {
        this.server_ = server_;
        this.statsToReport_ = {};
        this.statsListener_ = new StatsListener_1.StatsListener(collection);
        var timeout = FIRST_STATS_MIN_TIME +
            (FIRST_STATS_MAX_TIME - FIRST_STATS_MIN_TIME) * Math.random();
        util_2.setTimeoutNonBlocking(this.reportStats_.bind(this), Math.floor(timeout));
    }
    StatsReporter.prototype.includeStat = function (stat) {
        this.statsToReport_[stat] = true;
    };
    StatsReporter.prototype.reportStats_ = function () {
        var _this = this;
        var stats = this.statsListener_.get();
        var reportedStats = {};
        var haveStatsToReport = false;
        util_1.forEach(stats, function (stat, value) {
            if (value > 0 && util_1.contains(_this.statsToReport_, stat)) {
                reportedStats[stat] = value;
                haveStatsToReport = true;
            }
        });
        if (haveStatsToReport) {
            this.server_.reportStats(reportedStats);
        }
        // queue our next run.
        util_2.setTimeoutNonBlocking(this.reportStats_.bind(this), Math.floor(Math.random() * 2 * REPORT_STATS_INTERVAL));
    };
    return StatsReporter;
}());
exports.StatsReporter = StatsReporter;



},{"../util/util":63,"./StatsListener":46,"@firebase/util":92}],49:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 * Wraps a DOM Storage object and:
 * - automatically encode objects as JSON strings before storing them to allow us to store arbitrary types.
 * - prefixes names with "firebase:" to avoid collisions with app data.
 *
 * We automatically (see storage.js) create two such wrappers, one for sessionStorage,
 * and one for localStorage.
 *
 * @constructor
 */
var DOMStorageWrapper = /** @class */ (function () {
    /**
     * @param {Storage} domStorage_ The underlying storage object (e.g. localStorage or sessionStorage)
     */
    function DOMStorageWrapper(domStorage_) {
        this.domStorage_ = domStorage_;
        // Use a prefix to avoid collisions with other stuff saved by the app.
        this.prefix_ = 'firebase:';
    }
    /**
     * @param {string} key The key to save the value under
     * @param {?Object} value The value being stored, or null to remove the key.
     */
    DOMStorageWrapper.prototype.set = function (key, value) {
        if (value == null) {
            this.domStorage_.removeItem(this.prefixedName_(key));
        }
        else {
            this.domStorage_.setItem(this.prefixedName_(key), util_1.stringify(value));
        }
    };
    /**
     * @param {string} key
     * @return {*} The value that was stored under this key, or null
     */
    DOMStorageWrapper.prototype.get = function (key) {
        var storedVal = this.domStorage_.getItem(this.prefixedName_(key));
        if (storedVal == null) {
            return null;
        }
        else {
            return util_1.jsonEval(storedVal);
        }
    };
    /**
     * @param {string} key
     */
    DOMStorageWrapper.prototype.remove = function (key) {
        this.domStorage_.removeItem(this.prefixedName_(key));
    };
    /**
     * @param {string} name
     * @return {string}
     */
    DOMStorageWrapper.prototype.prefixedName_ = function (name) {
        return this.prefix_ + name;
    };
    DOMStorageWrapper.prototype.toString = function () {
        return this.domStorage_.toString();
    };
    return DOMStorageWrapper;
}());
exports.DOMStorageWrapper = DOMStorageWrapper;



},{"@firebase/util":92}],50:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 * An in-memory storage implementation that matches the API of DOMStorageWrapper
 * (TODO: create interface for both to implement).
 *
 * @constructor
 */
var MemoryStorage = /** @class */ (function () {
    function MemoryStorage() {
        this.cache_ = {};
        this.isInMemoryStorage = true;
    }
    MemoryStorage.prototype.set = function (key, value) {
        if (value == null) {
            delete this.cache_[key];
        }
        else {
            this.cache_[key] = value;
        }
    };
    MemoryStorage.prototype.get = function (key) {
        if (util_1.contains(this.cache_, key)) {
            return this.cache_[key];
        }
        return null;
    };
    MemoryStorage.prototype.remove = function (key) {
        delete this.cache_[key];
    };
    return MemoryStorage;
}());
exports.MemoryStorage = MemoryStorage;



},{"@firebase/util":92}],51:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var DOMStorageWrapper_1 = require("./DOMStorageWrapper");
var MemoryStorage_1 = require("./MemoryStorage");
/**
 * Helper to create a DOMStorageWrapper or else fall back to MemoryStorage.
 * TODO: Once MemoryStorage and DOMStorageWrapper have a shared interface this method annotation should change
 * to reflect this type
 *
 * @param {string} domStorageName Name of the underlying storage object
 *   (e.g. 'localStorage' or 'sessionStorage').
 * @return {?} Turning off type information until a common interface is defined.
 */
var createStoragefor = function (domStorageName) {
    try {
        // NOTE: just accessing "localStorage" or "window['localStorage']" may throw a security exception,
        // so it must be inside the try/catch.
        if (typeof window !== 'undefined' &&
            typeof window[domStorageName] !== 'undefined') {
            // Need to test cache. Just because it's here doesn't mean it works
            var domStorage = window[domStorageName];
            domStorage.setItem('firebase:sentinel', 'cache');
            domStorage.removeItem('firebase:sentinel');
            return new DOMStorageWrapper_1.DOMStorageWrapper(domStorage);
        }
    }
    catch (e) { }
    // Failed to create wrapper.  Just return in-memory storage.
    // TODO: log?
    return new MemoryStorage_1.MemoryStorage();
};
/** A storage object that lasts across sessions */
exports.PersistentStorage = createStoragefor('localStorage');
/** A storage object that only lasts one session */
exports.SessionStorage = createStoragefor('sessionStorage');



},{"./DOMStorageWrapper":49,"./MemoryStorage":50}],52:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 * Implements a set with a count of elements.
 *
 * @template K, V
 */
var CountedSet = /** @class */ (function () {
    function CountedSet() {
        this.set = {};
    }
    /**
     * @param {!K} item
     * @param {V} val
     */
    CountedSet.prototype.add = function (item, val) {
        this.set[item] = val !== null ? val : true;
    };
    /**
     * @param {!K} key
     * @return {boolean}
     */
    CountedSet.prototype.contains = function (key) {
        return util_1.contains(this.set, key);
    };
    /**
     * @param {!K} item
     * @return {V}
     */
    CountedSet.prototype.get = function (item) {
        return this.contains(item) ? this.set[item] : undefined;
    };
    /**
     * @param {!K} item
     */
    CountedSet.prototype.remove = function (item) {
        delete this.set[item];
    };
    /**
     * Deletes everything in the set
     */
    CountedSet.prototype.clear = function () {
        this.set = {};
    };
    /**
     * True if there's nothing in the set
     * @return {boolean}
     */
    CountedSet.prototype.isEmpty = function () {
        return util_1.isEmpty(this.set);
    };
    /**
     * @return {number} The number of items in the set
     */
    CountedSet.prototype.count = function () {
        return util_1.getCount(this.set);
    };
    /**
     * Run a function on each k,v pair in the set
     * @param {function(K, V)} fn
     */
    CountedSet.prototype.each = function (fn) {
        util_1.forEach(this.set, function (k, v) { return fn(k, v); });
    };
    /**
     * Mostly for debugging
     * @return {Array.<K>} The keys present in this CountedSet
     */
    CountedSet.prototype.keys = function () {
        var keys = [];
        util_1.forEach(this.set, function (k) {
            keys.push(k);
        });
        return keys;
    };
    return CountedSet;
}());
exports.CountedSet = CountedSet;



},{"@firebase/util":92}],53:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 * Base class to be used if you want to emit events. Call the constructor with
 * the set of allowed event names.
 */
var EventEmitter = /** @class */ (function () {
    /**
     * @param {!Array.<string>} allowedEvents_
     */
    function EventEmitter(allowedEvents_) {
        this.allowedEvents_ = allowedEvents_;
        this.listeners_ = {};
        util_1.assert(Array.isArray(allowedEvents_) && allowedEvents_.length > 0, 'Requires a non-empty array');
    }
    /**
     * To be called by derived classes to trigger events.
     * @param {!string} eventType
     * @param {...*} var_args
     */
    EventEmitter.prototype.trigger = function (eventType) {
        var var_args = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            var_args[_i - 1] = arguments[_i];
        }
        if (Array.isArray(this.listeners_[eventType])) {
            // Clone the list, since callbacks could add/remove listeners.
            var listeners = this.listeners_[eventType].slice();
            for (var i = 0; i < listeners.length; i++) {
                listeners[i].callback.apply(listeners[i].context, var_args);
            }
        }
    };
    EventEmitter.prototype.on = function (eventType, callback, context) {
        this.validateEventType_(eventType);
        this.listeners_[eventType] = this.listeners_[eventType] || [];
        this.listeners_[eventType].push({ callback: callback, context: context });
        var eventData = this.getInitialEvent(eventType);
        if (eventData) {
            callback.apply(context, eventData);
        }
    };
    EventEmitter.prototype.off = function (eventType, callback, context) {
        this.validateEventType_(eventType);
        var listeners = this.listeners_[eventType] || [];
        for (var i = 0; i < listeners.length; i++) {
            if (listeners[i].callback === callback &&
                (!context || context === listeners[i].context)) {
                listeners.splice(i, 1);
                return;
            }
        }
    };
    EventEmitter.prototype.validateEventType_ = function (eventType) {
        util_1.assert(this.allowedEvents_.find(function (et) {
            return et === eventType;
        }), 'Unknown event: ' + eventType);
    };
    return EventEmitter;
}());
exports.EventEmitter = EventEmitter;



},{"@firebase/util":92}],54:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var SortedMap_1 = require("./SortedMap");
var Path_1 = require("./Path");
var util_1 = require("./util");
var util_2 = require("@firebase/util");
var emptyChildrenSingleton;
/**
 * Singleton empty children collection.
 *
 * @const
 * @type {!SortedMap.<string, !ImmutableTree.<?>>}
 */
var EmptyChildren = function () {
    if (!emptyChildrenSingleton) {
        emptyChildrenSingleton = new SortedMap_1.SortedMap(util_1.stringCompare);
    }
    return emptyChildrenSingleton;
};
/**
 * A tree with immutable elements.
 */
var ImmutableTree = /** @class */ (function () {
    /**
     * @template T
     * @param {?T} value
     * @param {SortedMap.<string, !ImmutableTree.<T>>=} children
     */
    function ImmutableTree(value, children) {
        if (children === void 0) { children = EmptyChildren(); }
        this.value = value;
        this.children = children;
    }
    /**
     * @template T
     * @param {!Object.<string, !T>} obj
     * @return {!ImmutableTree.<!T>}
     */
    ImmutableTree.fromObject = function (obj) {
        var tree = ImmutableTree.Empty;
        util_2.forEach(obj, function (childPath, childSnap) {
            tree = tree.set(new Path_1.Path(childPath), childSnap);
        });
        return tree;
    };
    /**
     * True if the value is empty and there are no children
     * @return {boolean}
     */
    ImmutableTree.prototype.isEmpty = function () {
        return this.value === null && this.children.isEmpty();
    };
    /**
     * Given a path and predicate, return the first node and the path to that node
     * where the predicate returns true.
     *
     * TODO Do a perf test -- If we're creating a bunch of {path: value:} objects
     * on the way back out, it may be better to pass down a pathSoFar obj.
     *
     * @param {!Path} relativePath The remainder of the path
     * @param {function(T):boolean} predicate The predicate to satisfy to return a
     *   node
     * @return {?{path:!Path, value:!T}}
     */
    ImmutableTree.prototype.findRootMostMatchingPathAndValue = function (relativePath, predicate) {
        if (this.value != null && predicate(this.value)) {
            return { path: Path_1.Path.Empty, value: this.value };
        }
        else {
            if (relativePath.isEmpty()) {
                return null;
            }
            else {
                var front = relativePath.getFront();
                var child = this.children.get(front);
                if (child !== null) {
                    var childExistingPathAndValue = child.findRootMostMatchingPathAndValue(relativePath.popFront(), predicate);
                    if (childExistingPathAndValue != null) {
                        var fullPath = new Path_1.Path(front).child(childExistingPathAndValue.path);
                        return { path: fullPath, value: childExistingPathAndValue.value };
                    }
                    else {
                        return null;
                    }
                }
                else {
                    return null;
                }
            }
        }
    };
    /**
     * Find, if it exists, the shortest subpath of the given path that points a defined
     * value in the tree
     * @param {!Path} relativePath
     * @return {?{path: !Path, value: !T}}
     */
    ImmutableTree.prototype.findRootMostValueAndPath = function (relativePath) {
        return this.findRootMostMatchingPathAndValue(relativePath, function () { return true; });
    };
    /**
     * @param {!Path} relativePath
     * @return {!ImmutableTree.<T>} The subtree at the given path
     */
    ImmutableTree.prototype.subtree = function (relativePath) {
        if (relativePath.isEmpty()) {
            return this;
        }
        else {
            var front = relativePath.getFront();
            var childTree = this.children.get(front);
            if (childTree !== null) {
                return childTree.subtree(relativePath.popFront());
            }
            else {
                return ImmutableTree.Empty;
            }
        }
    };
    /**
     * Sets a value at the specified path.
     *
     * @param {!Path} relativePath Path to set value at.
     * @param {?T} toSet Value to set.
     * @return {!ImmutableTree.<T>} Resulting tree.
     */
    ImmutableTree.prototype.set = function (relativePath, toSet) {
        if (relativePath.isEmpty()) {
            return new ImmutableTree(toSet, this.children);
        }
        else {
            var front = relativePath.getFront();
            var child = this.children.get(front) || ImmutableTree.Empty;
            var newChild = child.set(relativePath.popFront(), toSet);
            var newChildren = this.children.insert(front, newChild);
            return new ImmutableTree(this.value, newChildren);
        }
    };
    /**
     * Removes the value at the specified path.
     *
     * @param {!Path} relativePath Path to value to remove.
     * @return {!ImmutableTree.<T>} Resulting tree.
     */
    ImmutableTree.prototype.remove = function (relativePath) {
        if (relativePath.isEmpty()) {
            if (this.children.isEmpty()) {
                return ImmutableTree.Empty;
            }
            else {
                return new ImmutableTree(null, this.children);
            }
        }
        else {
            var front = relativePath.getFront();
            var child = this.children.get(front);
            if (child) {
                var newChild = child.remove(relativePath.popFront());
                var newChildren = void 0;
                if (newChild.isEmpty()) {
                    newChildren = this.children.remove(front);
                }
                else {
                    newChildren = this.children.insert(front, newChild);
                }
                if (this.value === null && newChildren.isEmpty()) {
                    return ImmutableTree.Empty;
                }
                else {
                    return new ImmutableTree(this.value, newChildren);
                }
            }
            else {
                return this;
            }
        }
    };
    /**
     * Gets a value from the tree.
     *
     * @param {!Path} relativePath Path to get value for.
     * @return {?T} Value at path, or null.
     */
    ImmutableTree.prototype.get = function (relativePath) {
        if (relativePath.isEmpty()) {
            return this.value;
        }
        else {
            var front = relativePath.getFront();
            var child = this.children.get(front);
            if (child) {
                return child.get(relativePath.popFront());
            }
            else {
                return null;
            }
        }
    };
    /**
     * Replace the subtree at the specified path with the given new tree.
     *
     * @param {!Path} relativePath Path to replace subtree for.
     * @param {!ImmutableTree} newTree New tree.
     * @return {!ImmutableTree} Resulting tree.
     */
    ImmutableTree.prototype.setTree = function (relativePath, newTree) {
        if (relativePath.isEmpty()) {
            return newTree;
        }
        else {
            var front = relativePath.getFront();
            var child = this.children.get(front) || ImmutableTree.Empty;
            var newChild = child.setTree(relativePath.popFront(), newTree);
            var newChildren = void 0;
            if (newChild.isEmpty()) {
                newChildren = this.children.remove(front);
            }
            else {
                newChildren = this.children.insert(front, newChild);
            }
            return new ImmutableTree(this.value, newChildren);
        }
    };
    /**
     * Performs a depth first fold on this tree. Transforms a tree into a single
     * value, given a function that operates on the path to a node, an optional
     * current value, and a map of child names to folded subtrees
     * @template V
     * @param {function(Path, ?T, Object.<string, V>):V} fn
     * @return {V}
     */
    ImmutableTree.prototype.fold = function (fn) {
        return this.fold_(Path_1.Path.Empty, fn);
    };
    /**
     * Recursive helper for public-facing fold() method
     * @template V
     * @param {!Path} pathSoFar
     * @param {function(Path, ?T, Object.<string, V>):V} fn
     * @return {V}
     * @private
     */
    ImmutableTree.prototype.fold_ = function (pathSoFar, fn) {
        var accum = {};
        this.children.inorderTraversal(function (childKey, childTree) {
            accum[childKey] = childTree.fold_(pathSoFar.child(childKey), fn);
        });
        return fn(pathSoFar, this.value, accum);
    };
    /**
     * Find the first matching value on the given path. Return the result of applying f to it.
     * @template V
     * @param {!Path} path
     * @param {!function(!Path, !T):?V} f
     * @return {?V}
     */
    ImmutableTree.prototype.findOnPath = function (path, f) {
        return this.findOnPath_(path, Path_1.Path.Empty, f);
    };
    ImmutableTree.prototype.findOnPath_ = function (pathToFollow, pathSoFar, f) {
        var result = this.value ? f(pathSoFar, this.value) : false;
        if (result) {
            return result;
        }
        else {
            if (pathToFollow.isEmpty()) {
                return null;
            }
            else {
                var front = pathToFollow.getFront();
                var nextChild = this.children.get(front);
                if (nextChild) {
                    return nextChild.findOnPath_(pathToFollow.popFront(), pathSoFar.child(front), f);
                }
                else {
                    return null;
                }
            }
        }
    };
    /**
     *
     * @param {!Path} path
     * @param {!function(!Path, !T)} f
     * @returns {!ImmutableTree.<T>}
     */
    ImmutableTree.prototype.foreachOnPath = function (path, f) {
        return this.foreachOnPath_(path, Path_1.Path.Empty, f);
    };
    ImmutableTree.prototype.foreachOnPath_ = function (pathToFollow, currentRelativePath, f) {
        if (pathToFollow.isEmpty()) {
            return this;
        }
        else {
            if (this.value) {
                f(currentRelativePath, this.value);
            }
            var front = pathToFollow.getFront();
            var nextChild = this.children.get(front);
            if (nextChild) {
                return nextChild.foreachOnPath_(pathToFollow.popFront(), currentRelativePath.child(front), f);
            }
            else {
                return ImmutableTree.Empty;
            }
        }
    };
    /**
     * Calls the given function for each node in the tree that has a value.
     *
     * @param {function(!Path, !T)} f A function to be called with
     *   the path from the root of the tree to a node, and the value at that node.
     *   Called in depth-first order.
     */
    ImmutableTree.prototype.foreach = function (f) {
        this.foreach_(Path_1.Path.Empty, f);
    };
    ImmutableTree.prototype.foreach_ = function (currentRelativePath, f) {
        this.children.inorderTraversal(function (childName, childTree) {
            childTree.foreach_(currentRelativePath.child(childName), f);
        });
        if (this.value) {
            f(currentRelativePath, this.value);
        }
    };
    /**
     *
     * @param {function(string, !T)} f
     */
    ImmutableTree.prototype.foreachChild = function (f) {
        this.children.inorderTraversal(function (childName, childTree) {
            if (childTree.value) {
                f(childName, childTree.value);
            }
        });
    };
    ImmutableTree.Empty = new ImmutableTree(null);
    return ImmutableTree;
}());
exports.ImmutableTree = ImmutableTree;



},{"./Path":57,"./SortedMap":59,"./util":63,"@firebase/util":92}],55:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 * Fancy ID generator that creates 20-character string identifiers with the
 * following properties:
 *
 * 1. They're based on timestamp so that they sort *after* any existing ids.
 * 2. They contain 72-bits of random data after the timestamp so that IDs won't
 *    collide with other clients' IDs.
 * 3. They sort *lexicographically* (so the timestamp is converted to characters
 *    that will sort properly).
 * 4. They're monotonically increasing. Even if you generate more than one in
 *    the same timestamp, the latter ones will sort after the former ones. We do
 *    this by using the previous random bits but "incrementing" them by 1 (only
 *    in the case of a timestamp collision).
 */
exports.nextPushId = (function () {
    // Modeled after base64 web-safe chars, but ordered by ASCII.
    var PUSH_CHARS = '-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz';
    // Timestamp of last push, used to prevent local collisions if you push twice
    // in one ms.
    var lastPushTime = 0;
    // We generate 72-bits of randomness which get turned into 12 characters and
    // appended to the timestamp to prevent collisions with other clients. We
    // store the last characters we generated because in the event of a collision,
    // we'll use those same characters except "incremented" by one.
    var lastRandChars = [];
    return function (now) {
        var duplicateTime = now === lastPushTime;
        lastPushTime = now;
        var i;
        var timeStampChars = new Array(8);
        for (i = 7; i >= 0; i--) {
            timeStampChars[i] = PUSH_CHARS.charAt(now % 64);
            // NOTE: Can't use << here because javascript will convert to int and lose
            // the upper bits.
            now = Math.floor(now / 64);
        }
        util_1.assert(now === 0, 'Cannot push at time == 0');
        var id = timeStampChars.join('');
        if (!duplicateTime) {
            for (i = 0; i < 12; i++) {
                lastRandChars[i] = Math.floor(Math.random() * 64);
            }
        }
        else {
            // If the timestamp hasn't changed since last push, use the same random
            // number, except incremented by 1.
            for (i = 11; i >= 0 && lastRandChars[i] === 63; i--) {
                lastRandChars[i] = 0;
            }
            lastRandChars[i]++;
        }
        for (i = 0; i < 12; i++) {
            id += PUSH_CHARS.charAt(lastRandChars[i]);
        }
        util_1.assert(id.length === 20, 'nextPushId: Length should be 20.');
        return id;
    };
})();



},{"@firebase/util":92}],56:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var util_1 = require("@firebase/util");
var EventEmitter_1 = require("./EventEmitter");
var util_2 = require("@firebase/util");
/**
 * Monitors online state (as reported by window.online/offline events).
 *
 * The expectation is that this could have many false positives (thinks we are online
 * when we're not), but no false negatives.  So we can safely use it to determine when
 * we definitely cannot reach the internet.
 *
 * @extends {EventEmitter}
 */
var OnlineMonitor = /** @class */ (function (_super) {
    tslib_1.__extends(OnlineMonitor, _super);
    function OnlineMonitor() {
        var _this = _super.call(this, ['online']) || this;
        _this.online_ = true;
        // We've had repeated complaints that Cordova apps can get stuck "offline", e.g.
        // https://forum.ionicframework.com/t/firebase-connection-is-lost-and-never-come-back/43810
        // It would seem that the 'online' event does not always fire consistently. So we disable it
        // for Cordova.
        if (typeof window !== 'undefined' &&
            typeof window.addEventListener !== 'undefined' &&
            !util_2.isMobileCordova()) {
            window.addEventListener('online', function () {
                if (!_this.online_) {
                    _this.online_ = true;
                    _this.trigger('online', true);
                }
            }, false);
            window.addEventListener('offline', function () {
                if (_this.online_) {
                    _this.online_ = false;
                    _this.trigger('online', false);
                }
            }, false);
        }
        return _this;
    }
    OnlineMonitor.getInstance = function () {
        return new OnlineMonitor();
    };
    /**
     * @param {!string} eventType
     * @return {Array.<boolean>}
     */
    OnlineMonitor.prototype.getInitialEvent = function (eventType) {
        util_1.assert(eventType === 'online', 'Unknown event type: ' + eventType);
        return [this.online_];
    };
    /**
     * @return {boolean}
     */
    OnlineMonitor.prototype.currentlyOnline = function () {
        return this.online_;
    };
    return OnlineMonitor;
}(EventEmitter_1.EventEmitter));
exports.OnlineMonitor = OnlineMonitor;



},{"./EventEmitter":53,"@firebase/util":92,"tslib":121}],57:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("./util");
var util_2 = require("@firebase/util");
/**
 * An immutable object representing a parsed path.  It's immutable so that you
 * can pass them around to other functions without worrying about them changing
 * it.
 */
var Path = /** @class */ (function () {
    /**
     * @param {string|Array.<string>} pathOrString Path string to parse,
     *      or another path, or the raw tokens array
     * @param {number=} pieceNum
     */
    function Path(pathOrString, pieceNum) {
        if (pieceNum === void 0) {
            this.pieces_ = pathOrString.split('/');
            // Remove empty pieces.
            var copyTo = 0;
            for (var i = 0; i < this.pieces_.length; i++) {
                if (this.pieces_[i].length > 0) {
                    this.pieces_[copyTo] = this.pieces_[i];
                    copyTo++;
                }
            }
            this.pieces_.length = copyTo;
            this.pieceNum_ = 0;
        }
        else {
            this.pieces_ = pathOrString;
            this.pieceNum_ = pieceNum;
        }
    }
    Object.defineProperty(Path, "Empty", {
        /**
         * Singleton to represent an empty path
         *
         * @const
         */
        get: function () {
            return new Path('');
        },
        enumerable: true,
        configurable: true
    });
    Path.prototype.getFront = function () {
        if (this.pieceNum_ >= this.pieces_.length)
            return null;
        return this.pieces_[this.pieceNum_];
    };
    /**
     * @return {number} The number of segments in this path
     */
    Path.prototype.getLength = function () {
        return this.pieces_.length - this.pieceNum_;
    };
    /**
     * @return {!Path}
     */
    Path.prototype.popFront = function () {
        var pieceNum = this.pieceNum_;
        if (pieceNum < this.pieces_.length) {
            pieceNum++;
        }
        return new Path(this.pieces_, pieceNum);
    };
    /**
     * @return {?string}
     */
    Path.prototype.getBack = function () {
        if (this.pieceNum_ < this.pieces_.length)
            return this.pieces_[this.pieces_.length - 1];
        return null;
    };
    Path.prototype.toString = function () {
        var pathString = '';
        for (var i = this.pieceNum_; i < this.pieces_.length; i++) {
            if (this.pieces_[i] !== '')
                pathString += '/' + this.pieces_[i];
        }
        return pathString || '/';
    };
    Path.prototype.toUrlEncodedString = function () {
        var pathString = '';
        for (var i = this.pieceNum_; i < this.pieces_.length; i++) {
            if (this.pieces_[i] !== '')
                pathString += '/' + encodeURIComponent(String(this.pieces_[i]));
        }
        return pathString || '/';
    };
    /**
     * Shallow copy of the parts of the path.
     *
     * @param {number=} begin
     * @return {!Array<string>}
     */
    Path.prototype.slice = function (begin) {
        if (begin === void 0) { begin = 0; }
        return this.pieces_.slice(this.pieceNum_ + begin);
    };
    /**
     * @return {?Path}
     */
    Path.prototype.parent = function () {
        if (this.pieceNum_ >= this.pieces_.length)
            return null;
        var pieces = [];
        for (var i = this.pieceNum_; i < this.pieces_.length - 1; i++)
            pieces.push(this.pieces_[i]);
        return new Path(pieces, 0);
    };
    /**
     * @param {string|!Path} childPathObj
     * @return {!Path}
     */
    Path.prototype.child = function (childPathObj) {
        var pieces = [];
        for (var i = this.pieceNum_; i < this.pieces_.length; i++)
            pieces.push(this.pieces_[i]);
        if (childPathObj instanceof Path) {
            for (var i = childPathObj.pieceNum_; i < childPathObj.pieces_.length; i++) {
                pieces.push(childPathObj.pieces_[i]);
            }
        }
        else {
            var childPieces = childPathObj.split('/');
            for (var i = 0; i < childPieces.length; i++) {
                if (childPieces[i].length > 0)
                    pieces.push(childPieces[i]);
            }
        }
        return new Path(pieces, 0);
    };
    /**
     * @return {boolean} True if there are no segments in this path
     */
    Path.prototype.isEmpty = function () {
        return this.pieceNum_ >= this.pieces_.length;
    };
    /**
     * @param {!Path} outerPath
     * @param {!Path} innerPath
     * @return {!Path} The path from outerPath to innerPath
     */
    Path.relativePath = function (outerPath, innerPath) {
        var outer = outerPath.getFront(), inner = innerPath.getFront();
        if (outer === null) {
            return innerPath;
        }
        else if (outer === inner) {
            return Path.relativePath(outerPath.popFront(), innerPath.popFront());
        }
        else {
            throw new Error('INTERNAL ERROR: innerPath (' +
                innerPath +
                ') is not within ' +
                'outerPath (' +
                outerPath +
                ')');
        }
    };
    /**
     * @param {!Path} left
     * @param {!Path} right
     * @return {number} -1, 0, 1 if left is less, equal, or greater than the right.
     */
    Path.comparePaths = function (left, right) {
        var leftKeys = left.slice();
        var rightKeys = right.slice();
        for (var i = 0; i < leftKeys.length && i < rightKeys.length; i++) {
            var cmp = util_1.nameCompare(leftKeys[i], rightKeys[i]);
            if (cmp !== 0)
                return cmp;
        }
        if (leftKeys.length === rightKeys.length)
            return 0;
        return leftKeys.length < rightKeys.length ? -1 : 1;
    };
    /**
     *
     * @param {Path} other
     * @return {boolean} true if paths are the same.
     */
    Path.prototype.equals = function (other) {
        if (this.getLength() !== other.getLength()) {
            return false;
        }
        for (var i = this.pieceNum_, j = other.pieceNum_; i <= this.pieces_.length; i++, j++) {
            if (this.pieces_[i] !== other.pieces_[j]) {
                return false;
            }
        }
        return true;
    };
    /**
     *
     * @param {!Path} other
     * @return {boolean} True if this path is a parent (or the same as) other
     */
    Path.prototype.contains = function (other) {
        var i = this.pieceNum_;
        var j = other.pieceNum_;
        if (this.getLength() > other.getLength()) {
            return false;
        }
        while (i < this.pieces_.length) {
            if (this.pieces_[i] !== other.pieces_[j]) {
                return false;
            }
            ++i;
            ++j;
        }
        return true;
    };
    return Path;
}()); // end Path
exports.Path = Path;
/**
 * Dynamic (mutable) path used to count path lengths.
 *
 * This class is used to efficiently check paths for valid
 * length (in UTF8 bytes) and depth (used in path validation).
 *
 * Throws Error exception if path is ever invalid.
 *
 * The definition of a path always begins with '/'.
 */
var ValidationPath = /** @class */ (function () {
    /**
     * @param {!Path} path Initial Path.
     * @param {string} errorPrefix_ Prefix for any error messages.
     */
    function ValidationPath(path, errorPrefix_) {
        this.errorPrefix_ = errorPrefix_;
        /** @type {!Array<string>} */
        this.parts_ = path.slice();
        /** @type {number} Initialize to number of '/' chars needed in path. */
        this.byteLength_ = Math.max(1, this.parts_.length);
        for (var i = 0; i < this.parts_.length; i++) {
            this.byteLength_ += util_2.stringLength(this.parts_[i]);
        }
        this.checkValid_();
    }
    Object.defineProperty(ValidationPath, "MAX_PATH_DEPTH", {
        /** @const {number} Maximum key depth. */
        get: function () {
            return 32;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(ValidationPath, "MAX_PATH_LENGTH_BYTES", {
        /** @const {number} Maximum number of (UTF8) bytes in a Firebase path. */
        get: function () {
            return 768;
        },
        enumerable: true,
        configurable: true
    });
    /** @param {string} child */
    ValidationPath.prototype.push = function (child) {
        // Count the needed '/'
        if (this.parts_.length > 0) {
            this.byteLength_ += 1;
        }
        this.parts_.push(child);
        this.byteLength_ += util_2.stringLength(child);
        this.checkValid_();
    };
    ValidationPath.prototype.pop = function () {
        var last = this.parts_.pop();
        this.byteLength_ -= util_2.stringLength(last);
        // Un-count the previous '/'
        if (this.parts_.length > 0) {
            this.byteLength_ -= 1;
        }
    };
    ValidationPath.prototype.checkValid_ = function () {
        if (this.byteLength_ > ValidationPath.MAX_PATH_LENGTH_BYTES) {
            throw new Error(this.errorPrefix_ +
                'has a key path longer than ' +
                ValidationPath.MAX_PATH_LENGTH_BYTES +
                ' bytes (' +
                this.byteLength_ +
                ').');
        }
        if (this.parts_.length > ValidationPath.MAX_PATH_DEPTH) {
            throw new Error(this.errorPrefix_ +
                'path specified exceeds the maximum depth that can be written (' +
                ValidationPath.MAX_PATH_DEPTH +
                ') or object contains a cycle ' +
                this.toErrorString());
        }
    };
    /**
     * String for use in error messages - uses '.' notation for path.
     *
     * @return {string}
     */
    ValidationPath.prototype.toErrorString = function () {
        if (this.parts_.length == 0) {
            return '';
        }
        return "in property '" + this.parts_.join('.') + "'";
    };
    return ValidationPath;
}());
exports.ValidationPath = ValidationPath;



},{"./util":63,"@firebase/util":92}],58:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var Path_1 = require("./Path");
var SparseSnapshotTree_1 = require("../SparseSnapshotTree");
var LeafNode_1 = require("../snap/LeafNode");
var nodeFromJSON_1 = require("../snap/nodeFromJSON");
var PriorityIndex_1 = require("../snap/indexes/PriorityIndex");
/**
 * Generate placeholders for deferred values.
 * @param {?Object} values
 * @return {!Object}
 */
exports.generateWithValues = function (values) {
    values = values || {};
    values['timestamp'] = values['timestamp'] || new Date().getTime();
    return values;
};
/**
 * Value to use when firing local events. When writing server values, fire
 * local events with an approximate value, otherwise return value as-is.
 * @param {(Object|string|number|boolean)} value
 * @param {!Object} serverValues
 * @return {!(string|number|boolean)}
 */
exports.resolveDeferredValue = function (value, serverValues) {
    if (!value || typeof value !== 'object') {
        return value;
    }
    else {
        util_1.assert('.sv' in value, 'Unexpected leaf node or priority contents');
        return serverValues[value['.sv']];
    }
};
/**
 * Recursively replace all deferred values and priorities in the tree with the
 * specified generated replacement values.
 * @param {!SparseSnapshotTree} tree
 * @param {!Object} serverValues
 * @return {!SparseSnapshotTree}
 */
exports.resolveDeferredValueTree = function (tree, serverValues) {
    var resolvedTree = new SparseSnapshotTree_1.SparseSnapshotTree();
    tree.forEachTree(new Path_1.Path(''), function (path, node) {
        resolvedTree.remember(path, exports.resolveDeferredValueSnapshot(node, serverValues));
    });
    return resolvedTree;
};
/**
 * Recursively replace all deferred values and priorities in the node with the
 * specified generated replacement values.  If there are no server values in the node,
 * it'll be returned as-is.
 * @param {!Node} node
 * @param {!Object} serverValues
 * @return {!Node}
 */
exports.resolveDeferredValueSnapshot = function (node, serverValues) {
    var rawPri = node.getPriority().val();
    var priority = exports.resolveDeferredValue(rawPri, serverValues);
    var newNode;
    if (node.isLeafNode()) {
        var leafNode = node;
        var value = exports.resolveDeferredValue(leafNode.getValue(), serverValues);
        if (value !== leafNode.getValue() ||
            priority !== leafNode.getPriority().val()) {
            return new LeafNode_1.LeafNode(value, nodeFromJSON_1.nodeFromJSON(priority));
        }
        else {
            return node;
        }
    }
    else {
        var childrenNode = node;
        newNode = childrenNode;
        if (priority !== childrenNode.getPriority().val()) {
            newNode = newNode.updatePriority(new LeafNode_1.LeafNode(priority));
        }
        childrenNode.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (childName, childNode) {
            var newChildNode = exports.resolveDeferredValueSnapshot(childNode, serverValues);
            if (newChildNode !== childNode) {
                newNode = newNode.updateImmediateChild(childName, newChildNode);
            }
        });
        return newNode;
    }
};



},{"../SparseSnapshotTree":23,"../snap/LeafNode":34,"../snap/indexes/PriorityIndex":41,"../snap/nodeFromJSON":43,"./Path":57,"@firebase/util":92}],59:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * An iterator over an LLRBNode.
 */
var SortedMapIterator = /** @class */ (function () {
    /**
     * @template K, V, T
     * @param {LLRBNode|LLRBEmptyNode} node Node to iterate.
     * @param {?K} startKey
     * @param {function(K, K): number} comparator
     * @param {boolean} isReverse_ Whether or not to iterate in reverse
     * @param {(function(K, V):T)=} resultGenerator_
     */
    function SortedMapIterator(node, startKey, comparator, isReverse_, resultGenerator_) {
        if (resultGenerator_ === void 0) { resultGenerator_ = null; }
        this.isReverse_ = isReverse_;
        this.resultGenerator_ = resultGenerator_;
        /** @private
         * @type {Array.<!LLRBNode>}
         */
        this.nodeStack_ = [];
        var cmp = 1;
        while (!node.isEmpty()) {
            node = node;
            cmp = startKey ? comparator(node.key, startKey) : 1;
            // flip the comparison if we're going in reverse
            if (isReverse_)
                cmp *= -1;
            if (cmp < 0) {
                // This node is less than our start key. ignore it
                if (this.isReverse_) {
                    node = node.left;
                }
                else {
                    node = node.right;
                }
            }
            else if (cmp === 0) {
                // This node is exactly equal to our start key. Push it on the stack, but stop iterating;
                this.nodeStack_.push(node);
                break;
            }
            else {
                // This node is greater than our start key, add it to the stack and move to the next one
                this.nodeStack_.push(node);
                if (this.isReverse_) {
                    node = node.right;
                }
                else {
                    node = node.left;
                }
            }
        }
    }
    SortedMapIterator.prototype.getNext = function () {
        if (this.nodeStack_.length === 0)
            return null;
        var node = this.nodeStack_.pop();
        var result;
        if (this.resultGenerator_)
            result = this.resultGenerator_(node.key, node.value);
        else
            result = { key: node.key, value: node.value };
        if (this.isReverse_) {
            node = node.left;
            while (!node.isEmpty()) {
                this.nodeStack_.push(node);
                node = node.right;
            }
        }
        else {
            node = node.right;
            while (!node.isEmpty()) {
                this.nodeStack_.push(node);
                node = node.left;
            }
        }
        return result;
    };
    SortedMapIterator.prototype.hasNext = function () {
        return this.nodeStack_.length > 0;
    };
    SortedMapIterator.prototype.peek = function () {
        if (this.nodeStack_.length === 0)
            return null;
        var node = this.nodeStack_[this.nodeStack_.length - 1];
        if (this.resultGenerator_) {
            return this.resultGenerator_(node.key, node.value);
        }
        else {
            return { key: node.key, value: node.value };
        }
    };
    return SortedMapIterator;
}());
exports.SortedMapIterator = SortedMapIterator;
/**
 * Represents a node in a Left-leaning Red-Black tree.
 */
var LLRBNode = /** @class */ (function () {
    /**
     * @template K, V
     * @param {!K} key Key associated with this node.
     * @param {!V} value Value associated with this node.
     * @param {?boolean} color Whether this node is red.
     * @param {?(LLRBNode|LLRBEmptyNode)=} left Left child.
     * @param {?(LLRBNode|LLRBEmptyNode)=} right Right child.
     */
    function LLRBNode(key, value, color, left, right) {
        this.key = key;
        this.value = value;
        this.color = color != null ? color : LLRBNode.RED;
        this.left =
            left != null ? left : SortedMap.EMPTY_NODE;
        this.right =
            right != null ? right : SortedMap.EMPTY_NODE;
    }
    /**
     * Returns a copy of the current node, optionally replacing pieces of it.
     *
     * @param {?K} key New key for the node, or null.
     * @param {?V} value New value for the node, or null.
     * @param {?boolean} color New color for the node, or null.
     * @param {?LLRBNode|LLRBEmptyNode} left New left child for the node, or null.
     * @param {?LLRBNode|LLRBEmptyNode} right New right child for the node, or null.
     * @return {!LLRBNode} The node copy.
     */
    LLRBNode.prototype.copy = function (key, value, color, left, right) {
        return new LLRBNode(key != null ? key : this.key, value != null ? value : this.value, color != null ? color : this.color, left != null ? left : this.left, right != null ? right : this.right);
    };
    /**
     * @return {number} The total number of nodes in the tree.
     */
    LLRBNode.prototype.count = function () {
        return this.left.count() + 1 + this.right.count();
    };
    /**
     * @return {boolean} True if the tree is empty.
     */
    LLRBNode.prototype.isEmpty = function () {
        return false;
    };
    /**
     * Traverses the tree in key order and calls the specified action function
     * for each node.
     *
     * @param {function(!K, !V):*} action Callback function to be called for each
     *   node.  If it returns true, traversal is aborted.
     * @return {*} The first truthy value returned by action, or the last falsey
     *   value returned by action
     */
    LLRBNode.prototype.inorderTraversal = function (action) {
        return (this.left.inorderTraversal(action) ||
            action(this.key, this.value) ||
            this.right.inorderTraversal(action));
    };
    /**
     * Traverses the tree in reverse key order and calls the specified action function
     * for each node.
     *
     * @param {function(!Object, !Object)} action Callback function to be called for each
     * node.  If it returns true, traversal is aborted.
     * @return {*} True if traversal was aborted.
     */
    LLRBNode.prototype.reverseTraversal = function (action) {
        return (this.right.reverseTraversal(action) ||
            action(this.key, this.value) ||
            this.left.reverseTraversal(action));
    };
    /**
     * @return {!Object} The minimum node in the tree.
     * @private
     */
    LLRBNode.prototype.min_ = function () {
        if (this.left.isEmpty()) {
            return this;
        }
        else {
            return this.left.min_();
        }
    };
    /**
     * @return {!K} The maximum key in the tree.
     */
    LLRBNode.prototype.minKey = function () {
        return this.min_().key;
    };
    /**
     * @return {!K} The maximum key in the tree.
     */
    LLRBNode.prototype.maxKey = function () {
        if (this.right.isEmpty()) {
            return this.key;
        }
        else {
            return this.right.maxKey();
        }
    };
    /**
     *
     * @param {!Object} key Key to insert.
     * @param {!Object} value Value to insert.
     * @param {Comparator} comparator Comparator.
     * @return {!LLRBNode} New tree, with the key/value added.
     */
    LLRBNode.prototype.insert = function (key, value, comparator) {
        var cmp, n;
        n = this;
        cmp = comparator(key, n.key);
        if (cmp < 0) {
            n = n.copy(null, null, null, n.left.insert(key, value, comparator), null);
        }
        else if (cmp === 0) {
            n = n.copy(null, value, null, null, null);
        }
        else {
            n = n.copy(null, null, null, null, n.right.insert(key, value, comparator));
        }
        return n.fixUp_();
    };
    /**
     * @private
     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the minimum key removed.
     */
    LLRBNode.prototype.removeMin_ = function () {
        if (this.left.isEmpty()) {
            return SortedMap.EMPTY_NODE;
        }
        var n = this;
        if (!n.left.isRed_() && !n.left.left.isRed_())
            n = n.moveRedLeft_();
        n = n.copy(null, null, null, n.left.removeMin_(), null);
        return n.fixUp_();
    };
    /**
     * @param {!Object} key The key of the item to remove.
     * @param {Comparator} comparator Comparator.
     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the specified item removed.
     */
    LLRBNode.prototype.remove = function (key, comparator) {
        var n, smallest;
        n = this;
        if (comparator(key, n.key) < 0) {
            if (!n.left.isEmpty() && !n.left.isRed_() && !n.left.left.isRed_()) {
                n = n.moveRedLeft_();
            }
            n = n.copy(null, null, null, n.left.remove(key, comparator), null);
        }
        else {
            if (n.left.isRed_())
                n = n.rotateRight_();
            if (!n.right.isEmpty() && !n.right.isRed_() && !n.right.left.isRed_()) {
                n = n.moveRedRight_();
            }
            if (comparator(key, n.key) === 0) {
                if (n.right.isEmpty()) {
                    return SortedMap.EMPTY_NODE;
                }
                else {
                    smallest = n.right.min_();
                    n = n.copy(smallest.key, smallest.value, null, null, n.right.removeMin_());
                }
            }
            n = n.copy(null, null, null, null, n.right.remove(key, comparator));
        }
        return n.fixUp_();
    };
    /**
     * @private
     * @return {boolean} Whether this is a RED node.
     */
    LLRBNode.prototype.isRed_ = function () {
        return this.color;
    };
    /**
     * @private
     * @return {!LLRBNode} New tree after performing any needed rotations.
     */
    LLRBNode.prototype.fixUp_ = function () {
        var n = this;
        if (n.right.isRed_() && !n.left.isRed_())
            n = n.rotateLeft_();
        if (n.left.isRed_() && n.left.left.isRed_())
            n = n.rotateRight_();
        if (n.left.isRed_() && n.right.isRed_())
            n = n.colorFlip_();
        return n;
    };
    /**
     * @private
     * @return {!LLRBNode} New tree, after moveRedLeft.
     */
    LLRBNode.prototype.moveRedLeft_ = function () {
        var n = this.colorFlip_();
        if (n.right.left.isRed_()) {
            n = n.copy(null, null, null, null, n.right.rotateRight_());
            n = n.rotateLeft_();
            n = n.colorFlip_();
        }
        return n;
    };
    /**
     * @private
     * @return {!LLRBNode} New tree, after moveRedRight.
     */
    LLRBNode.prototype.moveRedRight_ = function () {
        var n = this.colorFlip_();
        if (n.left.left.isRed_()) {
            n = n.rotateRight_();
            n = n.colorFlip_();
        }
        return n;
    };
    /**
     * @private
     * @return {!LLRBNode} New tree, after rotateLeft.
     */
    LLRBNode.prototype.rotateLeft_ = function () {
        var nl = this.copy(null, null, LLRBNode.RED, null, this.right.left);
        return this.right.copy(null, null, this.color, nl, null);
    };
    /**
     * @private
     * @return {!LLRBNode} New tree, after rotateRight.
     */
    LLRBNode.prototype.rotateRight_ = function () {
        var nr = this.copy(null, null, LLRBNode.RED, this.left.right, null);
        return this.left.copy(null, null, this.color, null, nr);
    };
    /**
     * @private
     * @return {!LLRBNode} New tree, after colorFlip.
     */
    LLRBNode.prototype.colorFlip_ = function () {
        var left = this.left.copy(null, null, !this.left.color, null, null);
        var right = this.right.copy(null, null, !this.right.color, null, null);
        return this.copy(null, null, !this.color, left, right);
    };
    /**
     * For testing.
     *
     * @private
     * @return {boolean} True if all is well.
     */
    LLRBNode.prototype.checkMaxDepth_ = function () {
        var blackDepth = this.check_();
        return Math.pow(2.0, blackDepth) <= this.count() + 1;
    };
    /**
     * @private
     * @return {number} Not sure what this returns exactly. :-).
     */
    LLRBNode.prototype.check_ = function () {
        var blackDepth;
        if (this.isRed_() && this.left.isRed_()) {
            throw new Error('Red node has red child(' + this.key + ',' + this.value + ')');
        }
        if (this.right.isRed_()) {
            throw new Error('Right child of (' + this.key + ',' + this.value + ') is red');
        }
        blackDepth = this.left.check_();
        if (blackDepth !== this.right.check_()) {
            throw new Error('Black depths differ');
        }
        else {
            return blackDepth + (this.isRed_() ? 0 : 1);
        }
    };
    LLRBNode.RED = true;
    LLRBNode.BLACK = false;
    return LLRBNode;
}());
exports.LLRBNode = LLRBNode;
/**
 * Represents an empty node (a leaf node in the Red-Black Tree).
 */
var LLRBEmptyNode = /** @class */ (function () {
    function LLRBEmptyNode() {
    }
    /**
     * Returns a copy of the current node.
     *
     * @return {!LLRBEmptyNode} The node copy.
     */
    LLRBEmptyNode.prototype.copy = function (key, value, color, left, right) {
        return this;
    };
    /**
     * Returns a copy of the tree, with the specified key/value added.
     *
     * @param {!K} key Key to be added.
     * @param {!V} value Value to be added.
     * @param {Comparator} comparator Comparator.
     * @return {!LLRBNode} New tree, with item added.
     */
    LLRBEmptyNode.prototype.insert = function (key, value, comparator) {
        return new LLRBNode(key, value, null);
    };
    /**
     * Returns a copy of the tree, with the specified key removed.
     *
     * @param {!K} key The key to remove.
     * @param {Comparator} comparator Comparator.
     * @return {!LLRBEmptyNode} New tree, with item removed.
     */
    LLRBEmptyNode.prototype.remove = function (key, comparator) {
        return this;
    };
    /**
     * @return {number} The total number of nodes in the tree.
     */
    LLRBEmptyNode.prototype.count = function () {
        return 0;
    };
    /**
     * @return {boolean} True if the tree is empty.
     */
    LLRBEmptyNode.prototype.isEmpty = function () {
        return true;
    };
    /**
     * Traverses the tree in key order and calls the specified action function
     * for each node.
     *
     * @param {function(!K, !V):*} action Callback function to be called for each
     * node.  If it returns true, traversal is aborted.
     * @return {boolean} True if traversal was aborted.
     */
    LLRBEmptyNode.prototype.inorderTraversal = function (action) {
        return false;
    };
    /**
     * Traverses the tree in reverse key order and calls the specified action function
     * for each node.
     *
     * @param {function(!K, !V)} action Callback function to be called for each
     * node.  If it returns true, traversal is aborted.
     * @return {boolean} True if traversal was aborted.
     */
    LLRBEmptyNode.prototype.reverseTraversal = function (action) {
        return false;
    };
    /**
     * @return {null}
     */
    LLRBEmptyNode.prototype.minKey = function () {
        return null;
    };
    /**
     * @return {null}
     */
    LLRBEmptyNode.prototype.maxKey = function () {
        return null;
    };
    /**
     * @private
     * @return {number} Not sure what this returns exactly. :-).
     */
    LLRBEmptyNode.prototype.check_ = function () {
        return 0;
    };
    /**
     * @private
     * @return {boolean} Whether this node is red.
     */
    LLRBEmptyNode.prototype.isRed_ = function () {
        return false;
    };
    return LLRBEmptyNode;
}());
exports.LLRBEmptyNode = LLRBEmptyNode;
/**
 * An immutable sorted map implementation, based on a Left-leaning Red-Black
 * tree.
 */
var SortedMap = /** @class */ (function () {
    /**
     * @template K, V
     * @param {function(K, K):number} comparator_ Key comparator.
     * @param {LLRBNode=} root_ (Optional) Root node for the map.
     */
    function SortedMap(comparator_, root_) {
        if (root_ === void 0) { root_ = SortedMap.EMPTY_NODE; }
        this.comparator_ = comparator_;
        this.root_ = root_;
    }
    /**
     * Returns a copy of the map, with the specified key/value added or replaced.
     * (TODO: We should perhaps rename this method to 'put')
     *
     * @param {!K} key Key to be added.
     * @param {!V} value Value to be added.
     * @return {!SortedMap.<K, V>} New map, with item added.
     */
    SortedMap.prototype.insert = function (key, value) {
        return new SortedMap(this.comparator_, this.root_
            .insert(key, value, this.comparator_)
            .copy(null, null, LLRBNode.BLACK, null, null));
    };
    /**
     * Returns a copy of the map, with the specified key removed.
     *
     * @param {!K} key The key to remove.
     * @return {!SortedMap.<K, V>} New map, with item removed.
     */
    SortedMap.prototype.remove = function (key) {
        return new SortedMap(this.comparator_, this.root_
            .remove(key, this.comparator_)
            .copy(null, null, LLRBNode.BLACK, null, null));
    };
    /**
     * Returns the value of the node with the given key, or null.
     *
     * @param {!K} key The key to look up.
     * @return {?V} The value of the node with the given key, or null if the
     * key doesn't exist.
     */
    SortedMap.prototype.get = function (key) {
        var cmp;
        var node = this.root_;
        while (!node.isEmpty()) {
            cmp = this.comparator_(key, node.key);
            if (cmp === 0) {
                return node.value;
            }
            else if (cmp < 0) {
                node = node.left;
            }
            else if (cmp > 0) {
                node = node.right;
            }
        }
        return null;
    };
    /**
     * Returns the key of the item *before* the specified key, or null if key is the first item.
     * @param {K} key The key to find the predecessor of
     * @return {?K} The predecessor key.
     */
    SortedMap.prototype.getPredecessorKey = function (key) {
        var cmp, node = this.root_, rightParent = null;
        while (!node.isEmpty()) {
            cmp = this.comparator_(key, node.key);
            if (cmp === 0) {
                if (!node.left.isEmpty()) {
                    node = node.left;
                    while (!node.right.isEmpty())
                        node = node.right;
                    return node.key;
                }
                else if (rightParent) {
                    return rightParent.key;
                }
                else {
                    return null; // first item.
                }
            }
            else if (cmp < 0) {
                node = node.left;
            }
            else if (cmp > 0) {
                rightParent = node;
                node = node.right;
            }
        }
        throw new Error('Attempted to find predecessor key for a nonexistent key.  What gives?');
    };
    /**
     * @return {boolean} True if the map is empty.
     */
    SortedMap.prototype.isEmpty = function () {
        return this.root_.isEmpty();
    };
    /**
     * @return {number} The total number of nodes in the map.
     */
    SortedMap.prototype.count = function () {
        return this.root_.count();
    };
    /**
     * @return {?K} The minimum key in the map.
     */
    SortedMap.prototype.minKey = function () {
        return this.root_.minKey();
    };
    /**
     * @return {?K} The maximum key in the map.
     */
    SortedMap.prototype.maxKey = function () {
        return this.root_.maxKey();
    };
    /**
     * Traverses the map in key order and calls the specified action function
     * for each key/value pair.
     *
     * @param {function(!K, !V):*} action Callback function to be called
     * for each key/value pair.  If action returns true, traversal is aborted.
     * @return {*} The first truthy value returned by action, or the last falsey
     *   value returned by action
     */
    SortedMap.prototype.inorderTraversal = function (action) {
        return this.root_.inorderTraversal(action);
    };
    /**
     * Traverses the map in reverse key order and calls the specified action function
     * for each key/value pair.
     *
     * @param {function(!Object, !Object)} action Callback function to be called
     * for each key/value pair.  If action returns true, traversal is aborted.
     * @return {*} True if the traversal was aborted.
     */
    SortedMap.prototype.reverseTraversal = function (action) {
        return this.root_.reverseTraversal(action);
    };
    /**
     * Returns an iterator over the SortedMap.
     * @template T
     * @param {(function(K, V):T)=} resultGenerator
     * @return {SortedMapIterator.<K, V, T>} The iterator.
     */
    SortedMap.prototype.getIterator = function (resultGenerator) {
        return new SortedMapIterator(this.root_, null, this.comparator_, false, resultGenerator);
    };
    SortedMap.prototype.getIteratorFrom = function (key, resultGenerator) {
        return new SortedMapIterator(this.root_, key, this.comparator_, false, resultGenerator);
    };
    SortedMap.prototype.getReverseIteratorFrom = function (key, resultGenerator) {
        return new SortedMapIterator(this.root_, key, this.comparator_, true, resultGenerator);
    };
    SortedMap.prototype.getReverseIterator = function (resultGenerator) {
        return new SortedMapIterator(this.root_, null, this.comparator_, true, resultGenerator);
    };
    /**
     * Always use the same empty node, to reduce memory.
     * @const
     */
    SortedMap.EMPTY_NODE = new LLRBEmptyNode();
    return SortedMap;
}());
exports.SortedMap = SortedMap;



},{}],60:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var Path_1 = require("./Path");
var util_2 = require("@firebase/util");
/**
 * Node in a Tree.
 */
var TreeNode = /** @class */ (function () {
    function TreeNode() {
        // TODO: Consider making accessors that create children and value lazily or
        // separate Internal / Leaf 'types'.
        this.children = {};
        this.childCount = 0;
        this.value = null;
    }
    return TreeNode;
}());
exports.TreeNode = TreeNode;
/**
 * A light-weight tree, traversable by path.  Nodes can have both values and children.
 * Nodes are not enumerated (by forEachChild) unless they have a value or non-empty
 * children.
 */
var Tree = /** @class */ (function () {
    /**
     * @template T
     * @param {string=} name_ Optional name of the node.
     * @param {Tree=} parent_ Optional parent node.
     * @param {TreeNode=} node_ Optional node to wrap.
     */
    function Tree(name_, parent_, node_) {
        if (name_ === void 0) { name_ = ''; }
        if (parent_ === void 0) { parent_ = null; }
        if (node_ === void 0) { node_ = new TreeNode(); }
        this.name_ = name_;
        this.parent_ = parent_;
        this.node_ = node_;
    }
    /**
     * Returns a sub-Tree for the given path.
     *
     * @param {!(string|Path)} pathObj Path to look up.
     * @return {!Tree.<T>} Tree for path.
     */
    Tree.prototype.subTree = function (pathObj) {
        // TODO: Require pathObj to be Path?
        var path = pathObj instanceof Path_1.Path ? pathObj : new Path_1.Path(pathObj);
        var child = this, next;
        while ((next = path.getFront()) !== null) {
            var childNode = util_2.safeGet(child.node_.children, next) || new TreeNode();
            child = new Tree(next, child, childNode);
            path = path.popFront();
        }
        return child;
    };
    /**
     * Returns the data associated with this tree node.
     *
     * @return {?T} The data or null if no data exists.
     */
    Tree.prototype.getValue = function () {
        return this.node_.value;
    };
    /**
     * Sets data to this tree node.
     *
     * @param {!T} value Value to set.
     */
    Tree.prototype.setValue = function (value) {
        util_1.assert(typeof value !== 'undefined', 'Cannot set value to undefined');
        this.node_.value = value;
        this.updateParents_();
    };
    /**
     * Clears the contents of the tree node (its value and all children).
     */
    Tree.prototype.clear = function () {
        this.node_.value = null;
        this.node_.children = {};
        this.node_.childCount = 0;
        this.updateParents_();
    };
    /**
     * @return {boolean} Whether the tree has any children.
     */
    Tree.prototype.hasChildren = function () {
        return this.node_.childCount > 0;
    };
    /**
     * @return {boolean} Whether the tree is empty (no value or children).
     */
    Tree.prototype.isEmpty = function () {
        return this.getValue() === null && !this.hasChildren();
    };
    /**
     * Calls action for each child of this tree node.
     *
     * @param {function(!Tree.<T>)} action Action to be called for each child.
     */
    Tree.prototype.forEachChild = function (action) {
        var _this = this;
        util_2.forEach(this.node_.children, function (child, childTree) {
            action(new Tree(child, _this, childTree));
        });
    };
    /**
     * Does a depth-first traversal of this node's descendants, calling action for each one.
     *
     * @param {function(!Tree.<T>)} action Action to be called for each child.
     * @param {boolean=} includeSelf Whether to call action on this node as well. Defaults to
     *   false.
     * @param {boolean=} childrenFirst Whether to call action on children before calling it on
     *   parent.
     */
    Tree.prototype.forEachDescendant = function (action, includeSelf, childrenFirst) {
        if (includeSelf && !childrenFirst)
            action(this);
        this.forEachChild(function (child) {
            child.forEachDescendant(action, /*includeSelf=*/ true, childrenFirst);
        });
        if (includeSelf && childrenFirst)
            action(this);
    };
    /**
     * Calls action on each ancestor node.
     *
     * @param {function(!Tree.<T>)} action Action to be called on each parent; return
     *   true to abort.
     * @param {boolean=} includeSelf Whether to call action on this node as well.
     * @return {boolean} true if the action callback returned true.
     */
    Tree.prototype.forEachAncestor = function (action, includeSelf) {
        var node = includeSelf ? this : this.parent();
        while (node !== null) {
            if (action(node)) {
                return true;
            }
            node = node.parent();
        }
        return false;
    };
    /**
     * Does a depth-first traversal of this node's descendants.  When a descendant with a value
     * is found, action is called on it and traversal does not continue inside the node.
     * Action is *not* called on this node.
     *
     * @param {function(!Tree.<T>)} action Action to be called for each child.
     */
    Tree.prototype.forEachImmediateDescendantWithValue = function (action) {
        this.forEachChild(function (child) {
            if (child.getValue() !== null)
                action(child);
            else
                child.forEachImmediateDescendantWithValue(action);
        });
    };
    /**
     * @return {!Path} The path of this tree node, as a Path.
     */
    Tree.prototype.path = function () {
        return new Path_1.Path(this.parent_ === null
            ? this.name_
            : this.parent_.path() + '/' + this.name_);
    };
    /**
     * @return {string} The name of the tree node.
     */
    Tree.prototype.name = function () {
        return this.name_;
    };
    /**
     * @return {?Tree} The parent tree node, or null if this is the root of the tree.
     */
    Tree.prototype.parent = function () {
        return this.parent_;
    };
    /**
     * Adds or removes this child from its parent based on whether it's empty or not.
     *
     * @private
     */
    Tree.prototype.updateParents_ = function () {
        if (this.parent_ !== null)
            this.parent_.updateChild_(this.name_, this);
    };
    /**
     * Adds or removes the passed child to this tree node, depending on whether it's empty.
     *
     * @param {string} childName The name of the child to update.
     * @param {!Tree.<T>} child The child to update.
     * @private
     */
    Tree.prototype.updateChild_ = function (childName, child) {
        var childEmpty = child.isEmpty();
        var childExists = util_2.contains(this.node_.children, childName);
        if (childEmpty && childExists) {
            delete this.node_.children[childName];
            this.node_.childCount--;
            this.updateParents_();
        }
        else if (!childEmpty && !childExists) {
            this.node_.children[childName] = child.node_;
            this.node_.childCount++;
            this.updateParents_();
        }
    };
    return Tree;
}());
exports.Tree = Tree;



},{"./Path":57,"@firebase/util":92}],61:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var EventEmitter_1 = require("./EventEmitter");
var util_1 = require("@firebase/util");
/**
 * @extends {EventEmitter}
 */
var VisibilityMonitor = /** @class */ (function (_super) {
    tslib_1.__extends(VisibilityMonitor, _super);
    function VisibilityMonitor() {
        var _this = _super.call(this, ['visible']) || this;
        var hidden;
        var visibilityChange;
        if (typeof document !== 'undefined' &&
            typeof document.addEventListener !== 'undefined') {
            if (typeof document['hidden'] !== 'undefined') {
                // Opera 12.10 and Firefox 18 and later support
                visibilityChange = 'visibilitychange';
                hidden = 'hidden';
            }
            else if (typeof document['mozHidden'] !== 'undefined') {
                visibilityChange = 'mozvisibilitychange';
                hidden = 'mozHidden';
            }
            else if (typeof document['msHidden'] !== 'undefined') {
                visibilityChange = 'msvisibilitychange';
                hidden = 'msHidden';
            }
            else if (typeof document['webkitHidden'] !== 'undefined') {
                visibilityChange = 'webkitvisibilitychange';
                hidden = 'webkitHidden';
            }
        }
        // Initially, we always assume we are visible. This ensures that in browsers
        // without page visibility support or in cases where we are never visible
        // (e.g. chrome extension), we act as if we are visible, i.e. don't delay
        // reconnects
        _this.visible_ = true;
        if (visibilityChange) {
            document.addEventListener(visibilityChange, function () {
                var visible = !document[hidden];
                if (visible !== _this.visible_) {
                    _this.visible_ = visible;
                    _this.trigger('visible', visible);
                }
            }, false);
        }
        return _this;
    }
    VisibilityMonitor.getInstance = function () {
        return new VisibilityMonitor();
    };
    /**
     * @param {!string} eventType
     * @return {Array.<boolean>}
     */
    VisibilityMonitor.prototype.getInitialEvent = function (eventType) {
        util_1.assert(eventType === 'visible', 'Unknown event type: ' + eventType);
        return [this.visible_];
    };
    return VisibilityMonitor;
}(EventEmitter_1.EventEmitter));
exports.VisibilityMonitor = VisibilityMonitor;



},{"./EventEmitter":53,"@firebase/util":92,"tslib":121}],62:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Path_1 = require("../Path");
var RepoInfo_1 = require("../../RepoInfo");
var util_1 = require("../util");
/**
 * @param {!string} pathString
 * @return {string}
 */
function decodePath(pathString) {
    var pathStringDecoded = '';
    var pieces = pathString.split('/');
    for (var i = 0; i < pieces.length; i++) {
        if (pieces[i].length > 0) {
            var piece = pieces[i];
            try {
                piece = decodeURIComponent(piece.replace(/\+/g, ' '));
            }
            catch (e) { }
            pathStringDecoded += '/' + piece;
        }
    }
    return pathStringDecoded;
}
/**
 * @param {!string} queryString
 * @return {!{[key:string]:string}} key value hash
 */
function decodeQuery(queryString) {
    var results = {};
    if (queryString.startsWith('?')) {
        queryString = queryString.substring(1);
    }
    for (var _i = 0, _a = queryString.split('&'); _i < _a.length; _i++) {
        var segment = _a[_i];
        if (segment.length === 0) {
            continue;
        }
        var kv = segment.split('=');
        if (kv.length === 2) {
            results[decodeURIComponent(kv[0])] = decodeURIComponent(kv[1]);
        }
        else {
            util_1.warn("Invalid query segment '" + segment + "' in query '" + queryString + "'");
        }
    }
    return results;
}
/**
 *
 * @param {!string} dataURL
 * @return {{repoInfo: !RepoInfo, path: !Path}}
 */
exports.parseRepoInfo = function (dataURL) {
    var parsedUrl = exports.parseURL(dataURL), namespace = parsedUrl.subdomain;
    if (parsedUrl.domain === 'firebase') {
        util_1.fatal(parsedUrl.host +
            ' is no longer supported. ' +
            'Please use <YOUR FIREBASE>.firebaseio.com instead');
    }
    // Catch common error of uninitialized namespace value.
    if ((!namespace || namespace == 'undefined') &&
        parsedUrl.domain !== 'localhost') {
        util_1.fatal('Cannot parse Firebase url. Please use https://<YOUR FIREBASE>.firebaseio.com');
    }
    if (!parsedUrl.secure) {
        util_1.warnIfPageIsSecure();
    }
    var webSocketOnly = parsedUrl.scheme === 'ws' || parsedUrl.scheme === 'wss';
    return {
        repoInfo: new RepoInfo_1.RepoInfo(parsedUrl.host, parsedUrl.secure, namespace, webSocketOnly),
        path: new Path_1.Path(parsedUrl.pathString)
    };
};
/**
 *
 * @param {!string} dataURL
 * @return {{host: string, port: number, domain: string, subdomain: string, secure: boolean, scheme: string, pathString: string}}
 */
exports.parseURL = function (dataURL) {
    // Default to empty strings in the event of a malformed string.
    var host = '', domain = '', subdomain = '', pathString = '';
    // Always default to SSL, unless otherwise specified.
    var secure = true, scheme = 'https', port = 443;
    // Don't do any validation here. The caller is responsible for validating the result of parsing.
    if (typeof dataURL === 'string') {
        // Parse scheme.
        var colonInd = dataURL.indexOf('//');
        if (colonInd >= 0) {
            scheme = dataURL.substring(0, colonInd - 1);
            dataURL = dataURL.substring(colonInd + 2);
        }
        // Parse host, path, and query string.
        var slashInd = dataURL.indexOf('/');
        if (slashInd === -1) {
            slashInd = dataURL.length;
        }
        var questionMarkInd = dataURL.indexOf('?');
        if (questionMarkInd === -1) {
            questionMarkInd = dataURL.length;
        }
        host = dataURL.substring(0, Math.min(slashInd, questionMarkInd));
        if (slashInd < questionMarkInd) {
            // For pathString, questionMarkInd will always come after slashInd
            pathString = decodePath(dataURL.substring(slashInd, questionMarkInd));
        }
        var queryParams = decodeQuery(dataURL.substring(Math.min(dataURL.length, questionMarkInd)));
        // If we have a port, use scheme for determining if it's secure.
        colonInd = host.indexOf(':');
        if (colonInd >= 0) {
            secure = scheme === 'https' || scheme === 'wss';
            port = parseInt(host.substring(colonInd + 1), 10);
        }
        else {
            colonInd = dataURL.length;
        }
        var parts = host.split('.');
        if (parts.length === 3) {
            // Normalize namespaces to lowercase to share storage / connection.
            domain = parts[1];
            subdomain = parts[0].toLowerCase();
        }
        else if (parts.length === 2) {
            domain = parts[0];
        }
        else if (parts[0].slice(0, colonInd).toLowerCase() === 'localhost') {
            domain = 'localhost';
        }
        // Support `ns` query param if subdomain not already set
        if (subdomain === '' && 'ns' in queryParams) {
            subdomain = queryParams['ns'];
        }
    }
    return {
        host: host,
        port: port,
        domain: domain,
        subdomain: subdomain,
        secure: secure,
        scheme: scheme,
        pathString: pathString
    };
};



},{"../../RepoInfo":18,"../Path":57,"../util":63}],63:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
var util_3 = require("@firebase/util");
var util_4 = require("@firebase/util");
var util_5 = require("@firebase/util");
var util_6 = require("@firebase/util");
var storage_1 = require("../storage/storage");
var util_7 = require("@firebase/util");
var logger_1 = require("@firebase/logger");
var logClient = new logger_1.Logger('@firebase/database');
/**
 * Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).
 * @type {function(): number} Generated ID.
 */
exports.LUIDGenerator = (function () {
    var id = 1;
    return function () {
        return id++;
    };
})();
/**
 * Sha1 hash of the input string
 * @param {!string} str The string to hash
 * @return {!string} The resulting hash
 */
exports.sha1 = function (str) {
    var utf8Bytes = util_5.stringToByteArray(str);
    var sha1 = new util_4.Sha1();
    sha1.update(utf8Bytes);
    var sha1Bytes = sha1.digest();
    return util_3.base64.encodeByteArray(sha1Bytes);
};
/**
 * @param {...*} var_args
 * @return {string}
 * @private
 */
var buildLogMessage_ = function () {
    var var_args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        var_args[_i] = arguments[_i];
    }
    var message = '';
    for (var i = 0; i < var_args.length; i++) {
        if (Array.isArray(var_args[i]) ||
            (var_args[i] &&
                typeof var_args[i] === 'object' &&
                typeof var_args[i].length === 'number')) {
            message += buildLogMessage_.apply(null, var_args[i]);
        }
        else if (typeof var_args[i] === 'object') {
            message += util_6.stringify(var_args[i]);
        }
        else {
            message += var_args[i];
        }
        message += ' ';
    }
    return message;
};
/**
 * Use this for all debug messages in Firebase.
 * @type {?function(string)}
 */
exports.logger = null;
/**
 * Flag to check for log availability on first log message
 * @type {boolean}
 * @private
 */
var firstLog_ = true;
/**
 * The implementation of Firebase.enableLogging (defined here to break dependencies)
 * @param {boolean|?function(string)} logger_ A flag to turn on logging, or a custom logger
 * @param {boolean=} persistent Whether or not to persist logging settings across refreshes
 */
exports.enableLogging = function (logger_, persistent) {
    util_1.assert(!persistent || (logger_ === true || logger_ === false), "Can't turn on custom loggers persistently.");
    if (logger_ === true) {
        exports.logger = logClient.log.bind(logClient);
        if (persistent)
            storage_1.SessionStorage.set('logging_enabled', true);
    }
    else if (typeof logger_ === 'function') {
        exports.logger = logger_;
    }
    else {
        exports.logger = null;
        storage_1.SessionStorage.remove('logging_enabled');
    }
};
/**
 *
 * @param {...(string|Arguments)} var_args
 */
exports.log = function () {
    var var_args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        var_args[_i] = arguments[_i];
    }
    if (firstLog_ === true) {
        firstLog_ = false;
        if (exports.logger === null && storage_1.SessionStorage.get('logging_enabled') === true)
            exports.enableLogging(true);
    }
    if (exports.logger) {
        var message = buildLogMessage_.apply(null, var_args);
        exports.logger(message);
    }
};
/**
 * @param {!string} prefix
 * @return {function(...[*])}
 */
exports.logWrapper = function (prefix) {
    return function () {
        var var_args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            var_args[_i] = arguments[_i];
        }
        exports.log.apply(void 0, [prefix].concat(var_args));
    };
};
/**
 * @param {...string} var_args
 */
exports.error = function () {
    var var_args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        var_args[_i] = arguments[_i];
    }
    var message = 'FIREBASE INTERNAL ERROR: ' + buildLogMessage_.apply(void 0, var_args);
    logClient.error(message);
};
/**
 * @param {...string} var_args
 */
exports.fatal = function () {
    var var_args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        var_args[_i] = arguments[_i];
    }
    var message = "FIREBASE FATAL ERROR: " + buildLogMessage_.apply(void 0, var_args);
    logClient.error(message);
    throw new Error(message);
};
/**
 * @param {...*} var_args
 */
exports.warn = function () {
    var var_args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        var_args[_i] = arguments[_i];
    }
    var message = 'FIREBASE WARNING: ' + buildLogMessage_.apply(void 0, var_args);
    logClient.warn(message);
};
/**
 * Logs a warning if the containing page uses https. Called when a call to new Firebase
 * does not use https.
 */
exports.warnIfPageIsSecure = function () {
    // Be very careful accessing browser globals. Who knows what may or may not exist.
    if (typeof window !== 'undefined' &&
        window.location &&
        window.location.protocol &&
        window.location.protocol.indexOf('https:') !== -1) {
        exports.warn('Insecure Firebase access from a secure page. ' +
            'Please use https in calls to new Firebase().');
    }
};
/**
 * @param {!String} methodName
 */
exports.warnAboutUnsupportedMethod = function (methodName) {
    exports.warn(methodName +
        ' is unsupported and will likely change soon.  ' +
        'Please do not use.');
};
/**
 * Returns true if data is NaN, or +/- Infinity.
 * @param {*} data
 * @return {boolean}
 */
exports.isInvalidJSONNumber = function (data) {
    return (typeof data === 'number' &&
        (data != data || // NaN
            data == Number.POSITIVE_INFINITY ||
            data == Number.NEGATIVE_INFINITY));
};
/**
 * @param {function()} fn
 */
exports.executeWhenDOMReady = function (fn) {
    if (util_7.isNodeSdk() || document.readyState === 'complete') {
        fn();
    }
    else {
        // Modeled after jQuery. Try DOMContentLoaded and onreadystatechange (which
        // fire before onload), but fall back to onload.
        var called_1 = false;
        var wrappedFn_1 = function () {
            if (!document.body) {
                setTimeout(wrappedFn_1, Math.floor(10));
                return;
            }
            if (!called_1) {
                called_1 = true;
                fn();
            }
        };
        if (document.addEventListener) {
            document.addEventListener('DOMContentLoaded', wrappedFn_1, false);
            // fallback to onload.
            window.addEventListener('load', wrappedFn_1, false);
        }
        else if (document.attachEvent) {
            // IE.
            document.attachEvent('onreadystatechange', function () {
                if (document.readyState === 'complete')
                    wrappedFn_1();
            });
            // fallback to onload.
            window.attachEvent('onload', wrappedFn_1);
            // jQuery has an extra hack for IE that we could employ (based on
            // http://javascript.nwbox.com/IEContentLoaded/) But it looks really old.
            // I'm hoping we don't need it.
        }
    }
};
/**
 * Minimum key name. Invalid for actual data, used as a marker to sort before any valid names
 * @type {!string}
 */
exports.MIN_NAME = '[MIN_NAME]';
/**
 * Maximum key name. Invalid for actual data, used as a marker to sort above any valid names
 * @type {!string}
 */
exports.MAX_NAME = '[MAX_NAME]';
/**
 * Compares valid Firebase key names, plus min and max name
 * @param {!string} a
 * @param {!string} b
 * @return {!number}
 */
exports.nameCompare = function (a, b) {
    if (a === b) {
        return 0;
    }
    else if (a === exports.MIN_NAME || b === exports.MAX_NAME) {
        return -1;
    }
    else if (b === exports.MIN_NAME || a === exports.MAX_NAME) {
        return 1;
    }
    else {
        var aAsInt = exports.tryParseInt(a), bAsInt = exports.tryParseInt(b);
        if (aAsInt !== null) {
            if (bAsInt !== null) {
                return aAsInt - bAsInt == 0 ? a.length - b.length : aAsInt - bAsInt;
            }
            else {
                return -1;
            }
        }
        else if (bAsInt !== null) {
            return 1;
        }
        else {
            return a < b ? -1 : 1;
        }
    }
};
/**
 * @param {!string} a
 * @param {!string} b
 * @return {!number} comparison result.
 */
exports.stringCompare = function (a, b) {
    if (a === b) {
        return 0;
    }
    else if (a < b) {
        return -1;
    }
    else {
        return 1;
    }
};
/**
 * @param {string} key
 * @param {Object} obj
 * @return {*}
 */
exports.requireKey = function (key, obj) {
    if (obj && key in obj) {
        return obj[key];
    }
    else {
        throw new Error('Missing required key (' + key + ') in object: ' + util_6.stringify(obj));
    }
};
/**
 * @param {*} obj
 * @return {string}
 */
exports.ObjectToUniqueKey = function (obj) {
    if (typeof obj !== 'object' || obj === null)
        return util_6.stringify(obj);
    var keys = [];
    for (var k in obj) {
        keys.push(k);
    }
    // Export as json, but with the keys sorted.
    keys.sort();
    var key = '{';
    for (var i = 0; i < keys.length; i++) {
        if (i !== 0)
            key += ',';
        key += util_6.stringify(keys[i]);
        key += ':';
        key += exports.ObjectToUniqueKey(obj[keys[i]]);
    }
    key += '}';
    return key;
};
/**
 * Splits a string into a number of smaller segments of maximum size
 * @param {!string} str The string
 * @param {!number} segsize The maximum number of chars in the string.
 * @return {Array.<string>} The string, split into appropriately-sized chunks
 */
exports.splitStringBySize = function (str, segsize) {
    var len = str.length;
    if (len <= segsize) {
        return [str];
    }
    var dataSegs = [];
    for (var c = 0; c < len; c += segsize) {
        if (c + segsize > len) {
            dataSegs.push(str.substring(c, len));
        }
        else {
            dataSegs.push(str.substring(c, c + segsize));
        }
    }
    return dataSegs;
};
/**
 * Apply a function to each (key, value) pair in an object or
 * apply a function to each (index, value) pair in an array
 * @param {!(Object|Array)} obj The object or array to iterate over
 * @param {function(?, ?)} fn The function to apply
 */
exports.each = function (obj, fn) {
    if (Array.isArray(obj)) {
        for (var i = 0; i < obj.length; ++i) {
            fn(i, obj[i]);
        }
    }
    else {
        /**
         * in the conversion of code we removed the goog.object.forEach
         * function which did a value,key callback. We standardized on
         * a single impl that does a key, value callback. So we invert
         * to not have to touch the `each` code points
         */
        util_2.forEach(obj, function (key, val) { return fn(val, key); });
    }
};
/**
 * Like goog.bind, but doesn't bother to create a closure if opt_context is null/undefined.
 * @param {function(*)} callback Callback function.
 * @param {?Object=} context Optional context to bind to.
 * @return {function(*)}
 */
exports.bindCallback = function (callback, context) {
    return context ? callback.bind(context) : callback;
};
/**
 * Borrowed from http://hg.secondlife.com/llsd/src/tip/js/typedarray.js (MIT License)
 * I made one modification at the end and removed the NaN / Infinity
 * handling (since it seemed broken [caused an overflow] and we don't need it).  See MJL comments.
 * @param {!number} v A double
 * @return {string}
 */
exports.doubleToIEEE754String = function (v) {
    util_1.assert(!exports.isInvalidJSONNumber(v), 'Invalid JSON number'); // MJL
    var ebits = 11, fbits = 52;
    var bias = (1 << (ebits - 1)) - 1, s, e, f, ln, i, bits, str;
    // Compute sign, exponent, fraction
    // Skip NaN / Infinity handling --MJL.
    if (v === 0) {
        e = 0;
        f = 0;
        s = 1 / v === -Infinity ? 1 : 0;
    }
    else {
        s = v < 0;
        v = Math.abs(v);
        if (v >= Math.pow(2, 1 - bias)) {
            // Normalized
            ln = Math.min(Math.floor(Math.log(v) / Math.LN2), bias);
            e = ln + bias;
            f = Math.round(v * Math.pow(2, fbits - ln) - Math.pow(2, fbits));
        }
        else {
            // Denormalized
            e = 0;
            f = Math.round(v / Math.pow(2, 1 - bias - fbits));
        }
    }
    // Pack sign, exponent, fraction
    bits = [];
    for (i = fbits; i; i -= 1) {
        bits.push(f % 2 ? 1 : 0);
        f = Math.floor(f / 2);
    }
    for (i = ebits; i; i -= 1) {
        bits.push(e % 2 ? 1 : 0);
        e = Math.floor(e / 2);
    }
    bits.push(s ? 1 : 0);
    bits.reverse();
    str = bits.join('');
    // Return the data as a hex string. --MJL
    var hexByteString = '';
    for (i = 0; i < 64; i += 8) {
        var hexByte = parseInt(str.substr(i, 8), 2).toString(16);
        if (hexByte.length === 1)
            hexByte = '0' + hexByte;
        hexByteString = hexByteString + hexByte;
    }
    return hexByteString.toLowerCase();
};
/**
 * Used to detect if we're in a Chrome content script (which executes in an
 * isolated environment where long-polling doesn't work).
 * @return {boolean}
 */
exports.isChromeExtensionContentScript = function () {
    return !!(typeof window === 'object' &&
        window['chrome'] &&
        window['chrome']['extension'] &&
        !/^chrome/.test(window.location.href));
};
/**
 * Used to detect if we're in a Windows 8 Store app.
 * @return {boolean}
 */
exports.isWindowsStoreApp = function () {
    // Check for the presence of a couple WinRT globals
    return typeof Windows === 'object' && typeof Windows.UI === 'object';
};
/**
 * Converts a server error code to a Javascript Error
 * @param {!string} code
 * @param {!Query} query
 * @return {Error}
 */
exports.errorForServerCode = function (code, query) {
    var reason = 'Unknown Error';
    if (code === 'too_big') {
        reason =
            'The data requested exceeds the maximum size ' +
                'that can be accessed with a single request.';
    }
    else if (code == 'permission_denied') {
        reason = "Client doesn't have permission to access the desired data.";
    }
    else if (code == 'unavailable') {
        reason = 'The service is unavailable';
    }
    var error = new Error(code + ' at ' + query.path.toString() + ': ' + reason);
    error.code = code.toUpperCase();
    return error;
};
/**
 * Used to test for integer-looking strings
 * @type {RegExp}
 * @private
 */
exports.INTEGER_REGEXP_ = new RegExp('^-?\\d{1,10}$');
/**
 * If the string contains a 32-bit integer, return it.  Else return null.
 * @param {!string} str
 * @return {?number}
 */
exports.tryParseInt = function (str) {
    if (exports.INTEGER_REGEXP_.test(str)) {
        var intVal = Number(str);
        if (intVal >= -2147483648 && intVal <= 2147483647) {
            return intVal;
        }
    }
    return null;
};
/**
 * Helper to run some code but catch any exceptions and re-throw them later.
 * Useful for preventing user callbacks from breaking internal code.
 *
 * Re-throwing the exception from a setTimeout is a little evil, but it's very
 * convenient (we don't have to try to figure out when is a safe point to
 * re-throw it), and the behavior seems reasonable:
 *
 * * If you aren't pausing on exceptions, you get an error in the console with
 *   the correct stack trace.
 * * If you're pausing on all exceptions, the debugger will pause on your
 *   exception and then again when we rethrow it.
 * * If you're only pausing on uncaught exceptions, the debugger will only pause
 *   on us re-throwing it.
 *
 * @param {!function()} fn The code to guard.
 */
exports.exceptionGuard = function (fn) {
    try {
        fn();
    }
    catch (e) {
        // Re-throw exception when it's safe.
        setTimeout(function () {
            // It used to be that "throw e" would result in a good console error with
            // relevant context, but as of Chrome 39, you just get the firebase.js
            // file/line number where we re-throw it, which is useless. So we log
            // e.stack explicitly.
            var stack = e.stack || '';
            exports.warn('Exception was thrown by user callback.', stack);
            throw e;
        }, Math.floor(0));
    }
};
/**
 * Helper function to safely call opt_callback with the specified arguments.  It:
 * 1. Turns into a no-op if opt_callback is null or undefined.
 * 2. Wraps the call inside exceptionGuard to prevent exceptions from breaking our state.
 *
 * @param {?Function=} callback Optional onComplete callback.
 * @param {...*} var_args Arbitrary args to be passed to opt_onComplete
 */
exports.callUserCallback = function (callback) {
    var var_args = [];
    for (var _i = 1; _i < arguments.length; _i++) {
        var_args[_i - 1] = arguments[_i];
    }
    if (typeof callback === 'function') {
        exports.exceptionGuard(function () {
            callback.apply(void 0, var_args);
        });
    }
};
/**
 * @return {boolean} true if we think we're currently being crawled.
 */
exports.beingCrawled = function () {
    var userAgent = (typeof window === 'object' &&
        window['navigator'] &&
        window['navigator']['userAgent']) ||
        '';
    // For now we whitelist the most popular crawlers.  We should refine this to be the set of crawlers we
    // believe to support JavaScript/AJAX rendering.
    // NOTE: Google Webmaster Tools doesn't really belong, but their "This is how a visitor to your website
    // would have seen the page" is flaky if we don't treat it as a crawler.
    return (userAgent.search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i) >= 0);
};
/**
 * Export a property of an object using a getter function.
 *
 * @param {!Object} object
 * @param {string} name
 * @param {!function(): *} fnGet
 */
exports.exportPropGetter = function (object, name, fnGet) {
    Object.defineProperty(object, name, { get: fnGet });
};
/**
 * Same as setTimeout() except on Node.JS it will /not/ prevent the process from exiting.
 *
 * It is removed with clearTimeout() as normal.
 *
 * @param {Function} fn Function to run.
 * @param {number} time Milliseconds to wait before running.
 * @return {number|Object} The setTimeout() return value.
 */
exports.setTimeoutNonBlocking = function (fn, time) {
    var timeout = setTimeout(fn, time);
    if (typeof timeout === 'object' && timeout['unref']) {
        timeout['unref']();
    }
    return timeout;
};



},{"../storage/storage":51,"@firebase/logger":86,"@firebase/util":92}],64:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Path_1 = require("./Path");
var util_1 = require("@firebase/util");
var util_2 = require("./util");
var util_3 = require("@firebase/util");
var util_4 = require("@firebase/util");
/**
 * True for invalid Firebase keys
 * @type {RegExp}
 * @private
 */
exports.INVALID_KEY_REGEX_ = /[\[\].#$\/\u0000-\u001F\u007F]/;
/**
 * True for invalid Firebase paths.
 * Allows '/' in paths.
 * @type {RegExp}
 * @private
 */
exports.INVALID_PATH_REGEX_ = /[\[\].#$\u0000-\u001F\u007F]/;
/**
 * Maximum number of characters to allow in leaf value
 * @type {number}
 * @private
 */
exports.MAX_LEAF_SIZE_ = 10 * 1024 * 1024;
/**
 * @param {*} key
 * @return {boolean}
 */
exports.isValidKey = function (key) {
    return (typeof key === 'string' && key.length !== 0 && !exports.INVALID_KEY_REGEX_.test(key));
};
/**
 * @param {string} pathString
 * @return {boolean}
 */
exports.isValidPathString = function (pathString) {
    return (typeof pathString === 'string' &&
        pathString.length !== 0 &&
        !exports.INVALID_PATH_REGEX_.test(pathString));
};
/**
 * @param {string} pathString
 * @return {boolean}
 */
exports.isValidRootPathString = function (pathString) {
    if (pathString) {
        // Allow '/.info/' at the beginning.
        pathString = pathString.replace(/^\/*\.info(\/|$)/, '/');
    }
    return exports.isValidPathString(pathString);
};
/**
 * @param {*} priority
 * @return {boolean}
 */
exports.isValidPriority = function (priority) {
    return (priority === null ||
        typeof priority === 'string' ||
        (typeof priority === 'number' && !util_2.isInvalidJSONNumber(priority)) ||
        (priority && typeof priority === 'object' && util_1.contains(priority, '.sv')));
};
/**
 * Pre-validate a datum passed as an argument to Firebase function.
 *
 * @param {string} fnName
 * @param {number} argumentNumber
 * @param {*} data
 * @param {!Path} path
 * @param {boolean} optional
 */
exports.validateFirebaseDataArg = function (fnName, argumentNumber, data, path, optional) {
    if (optional && data === undefined)
        return;
    exports.validateFirebaseData(util_3.errorPrefix(fnName, argumentNumber, optional), data, path);
};
/**
 * Validate a data object client-side before sending to server.
 *
 * @param {string} errorPrefix
 * @param {*} data
 * @param {!Path|!ValidationPath} path_
 */
exports.validateFirebaseData = function (errorPrefix, data, path_) {
    var path = path_ instanceof Path_1.Path ? new Path_1.ValidationPath(path_, errorPrefix) : path_;
    if (data === undefined) {
        throw new Error(errorPrefix + 'contains undefined ' + path.toErrorString());
    }
    if (typeof data === 'function') {
        throw new Error(errorPrefix +
            'contains a function ' +
            path.toErrorString() +
            ' with contents = ' +
            data.toString());
    }
    if (util_2.isInvalidJSONNumber(data)) {
        throw new Error(errorPrefix + 'contains ' + data.toString() + ' ' + path.toErrorString());
    }
    // Check max leaf size, but try to avoid the utf8 conversion if we can.
    if (typeof data === 'string' &&
        data.length > exports.MAX_LEAF_SIZE_ / 3 &&
        util_4.stringLength(data) > exports.MAX_LEAF_SIZE_) {
        throw new Error(errorPrefix +
            'contains a string greater than ' +
            exports.MAX_LEAF_SIZE_ +
            ' utf8 bytes ' +
            path.toErrorString() +
            " ('" +
            data.substring(0, 50) +
            "...')");
    }
    // TODO = Perf = Consider combining the recursive validation of keys into NodeFromJSON
    // to save extra walking of large objects.
    if (data && typeof data === 'object') {
        var hasDotValue_1 = false, hasActualChild_1 = false;
        util_1.forEach(data, function (key, value) {
            if (key === '.value') {
                hasDotValue_1 = true;
            }
            else if (key !== '.priority' && key !== '.sv') {
                hasActualChild_1 = true;
                if (!exports.isValidKey(key)) {
                    throw new Error(errorPrefix +
                        ' contains an invalid key (' +
                        key +
                        ') ' +
                        path.toErrorString() +
                        '.  Keys must be non-empty strings ' +
                        'and can\'t contain ".", "#", "$", "/", "[", or "]"');
                }
            }
            path.push(key);
            exports.validateFirebaseData(errorPrefix, value, path);
            path.pop();
        });
        if (hasDotValue_1 && hasActualChild_1) {
            throw new Error(errorPrefix +
                ' contains ".value" child ' +
                path.toErrorString() +
                ' in addition to actual children.');
        }
    }
};
/**
 * Pre-validate paths passed in the firebase function.
 *
 * @param {string} errorPrefix
 * @param {Array<!Path>} mergePaths
 */
exports.validateFirebaseMergePaths = function (errorPrefix, mergePaths) {
    var i, curPath;
    for (i = 0; i < mergePaths.length; i++) {
        curPath = mergePaths[i];
        var keys = curPath.slice();
        for (var j = 0; j < keys.length; j++) {
            if (keys[j] === '.priority' && j === keys.length - 1) {
                // .priority is OK
            }
            else if (!exports.isValidKey(keys[j])) {
                throw new Error(errorPrefix +
                    'contains an invalid key (' +
                    keys[j] +
                    ') in path ' +
                    curPath.toString() +
                    '. Keys must be non-empty strings ' +
                    'and can\'t contain ".", "#", "$", "/", "[", or "]"');
            }
        }
    }
    // Check that update keys are not descendants of each other.
    // We rely on the property that sorting guarantees that ancestors come
    // right before descendants.
    mergePaths.sort(Path_1.Path.comparePaths);
    var prevPath = null;
    for (i = 0; i < mergePaths.length; i++) {
        curPath = mergePaths[i];
        if (prevPath !== null && prevPath.contains(curPath)) {
            throw new Error(errorPrefix +
                'contains a path ' +
                prevPath.toString() +
                ' that is ancestor of another path ' +
                curPath.toString());
        }
        prevPath = curPath;
    }
};
/**
 * pre-validate an object passed as an argument to firebase function (
 * must be an object - e.g. for firebase.update()).
 *
 * @param {string} fnName
 * @param {number} argumentNumber
 * @param {*} data
 * @param {!Path} path
 * @param {boolean} optional
 */
exports.validateFirebaseMergeDataArg = function (fnName, argumentNumber, data, path, optional) {
    if (optional && data === undefined)
        return;
    var errorPrefix = util_3.errorPrefix(fnName, argumentNumber, optional);
    if (!(data && typeof data === 'object') || Array.isArray(data)) {
        throw new Error(errorPrefix + ' must be an object containing the children to replace.');
    }
    var mergePaths = [];
    util_1.forEach(data, function (key, value) {
        var curPath = new Path_1.Path(key);
        exports.validateFirebaseData(errorPrefix, value, path.child(curPath));
        if (curPath.getBack() === '.priority') {
            if (!exports.isValidPriority(value)) {
                throw new Error(errorPrefix +
                    "contains an invalid value for '" +
                    curPath.toString() +
                    "', which must be a valid " +
                    'Firebase priority (a string, finite number, server value, or null).');
            }
        }
        mergePaths.push(curPath);
    });
    exports.validateFirebaseMergePaths(errorPrefix, mergePaths);
};
exports.validatePriority = function (fnName, argumentNumber, priority, optional) {
    if (optional && priority === undefined)
        return;
    if (util_2.isInvalidJSONNumber(priority))
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
            'is ' +
            priority.toString() +
            ', but must be a valid Firebase priority (a string, finite number, ' +
            'server value, or null).');
    // Special case to allow importing data with a .sv.
    if (!exports.isValidPriority(priority))
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
            'must be a valid Firebase priority ' +
            '(a string, finite number, server value, or null).');
};
exports.validateEventType = function (fnName, argumentNumber, eventType, optional) {
    if (optional && eventType === undefined)
        return;
    switch (eventType) {
        case 'value':
        case 'child_added':
        case 'child_removed':
        case 'child_changed':
        case 'child_moved':
            break;
        default:
            throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
                'must be a valid event type = "value", "child_added", "child_removed", ' +
                '"child_changed", or "child_moved".');
    }
};
exports.validateKey = function (fnName, argumentNumber, key, optional) {
    if (optional && key === undefined)
        return;
    if (!exports.isValidKey(key))
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
            'was an invalid key = "' +
            key +
            '".  Firebase keys must be non-empty strings and ' +
            'can\'t contain ".", "#", "$", "/", "[", or "]").');
};
exports.validatePathString = function (fnName, argumentNumber, pathString, optional) {
    if (optional && pathString === undefined)
        return;
    if (!exports.isValidPathString(pathString))
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
            'was an invalid path = "' +
            pathString +
            '". Paths must be non-empty strings and ' +
            'can\'t contain ".", "#", "$", "[", or "]"');
};
exports.validateRootPathString = function (fnName, argumentNumber, pathString, optional) {
    if (pathString) {
        // Allow '/.info/' at the beginning.
        pathString = pathString.replace(/^\/*\.info(\/|$)/, '/');
    }
    exports.validatePathString(fnName, argumentNumber, pathString, optional);
};
exports.validateWritablePath = function (fnName, path) {
    if (path.getFront() === '.info') {
        throw new Error(fnName + " failed = Can't modify data under /.info/");
    }
};
exports.validateUrl = function (fnName, argumentNumber, parsedUrl) {
    // TODO = Validate server better.
    var pathString = parsedUrl.path.toString();
    if (!(typeof parsedUrl.repoInfo.host === 'string') ||
        parsedUrl.repoInfo.host.length === 0 ||
        (!exports.isValidKey(parsedUrl.repoInfo.namespace) &&
            parsedUrl.repoInfo.host.split(':')[0] !== 'localhost') ||
        (pathString.length !== 0 && !exports.isValidRootPathString(pathString))) {
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, false) +
            'must be a valid firebase URL and ' +
            'the path can\'t contain ".", "#", "$", "[", or "]".');
    }
};
exports.validateCredential = function (fnName, argumentNumber, cred, optional) {
    if (optional && cred === undefined)
        return;
    if (!(typeof cred === 'string'))
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
            'must be a valid credential (a string).');
};
exports.validateBoolean = function (fnName, argumentNumber, bool, optional) {
    if (optional && bool === undefined)
        return;
    if (typeof bool !== 'boolean')
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) + 'must be a boolean.');
};
exports.validateString = function (fnName, argumentNumber, string, optional) {
    if (optional && string === undefined)
        return;
    if (!(typeof string === 'string')) {
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
            'must be a valid string.');
    }
};
exports.validateObject = function (fnName, argumentNumber, obj, optional) {
    if (optional && obj === undefined)
        return;
    if (!(obj && typeof obj === 'object') || obj === null) {
        throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
            'must be a valid object.');
    }
};
exports.validateObjectContainsKey = function (fnName, argumentNumber, obj, key, optional, opt_type) {
    var objectContainsKey = obj && typeof obj === 'object' && util_1.contains(obj, key);
    if (!objectContainsKey) {
        if (optional) {
            return;
        }
        else {
            throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
                'must contain the key "' +
                key +
                '"');
        }
    }
    if (opt_type) {
        var val = util_1.safeGet(obj, key);
        if ((opt_type === 'number' && !(typeof val === 'number')) ||
            (opt_type === 'string' && !(typeof val === 'string')) ||
            (opt_type === 'boolean' && !(typeof val === 'boolean')) ||
            (opt_type === 'function' && !(typeof val === 'function')) ||
            (opt_type === 'object' && !(typeof val === 'object') && val)) {
            if (optional) {
                throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
                    'contains invalid value for key "' +
                    key +
                    '" (must be of type "' +
                    opt_type +
                    '")');
            }
            else {
                throw new Error(util_3.errorPrefix(fnName, argumentNumber, optional) +
                    'must contain the key "' +
                    key +
                    '" with type "' +
                    opt_type +
                    '"');
            }
        }
    }
};



},{"./Path":57,"./util":63,"@firebase/util":92}],65:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * A cache node only stores complete children. Additionally it holds a flag whether the node can be considered fully
 * initialized in the sense that we know at one point in time this represented a valid state of the world, e.g.
 * initialized with data from the server, or a complete overwrite by the client. The filtered flag also tracks
 * whether a node potentially had children removed due to a filter.
 */
var CacheNode = /** @class */ (function () {
    /**
     * @param {!Node} node_
     * @param {boolean} fullyInitialized_
     * @param {boolean} filtered_
     */
    function CacheNode(node_, fullyInitialized_, filtered_) {
        this.node_ = node_;
        this.fullyInitialized_ = fullyInitialized_;
        this.filtered_ = filtered_;
    }
    /**
     * Returns whether this node was fully initialized with either server data or a complete overwrite by the client
     * @return {boolean}
     */
    CacheNode.prototype.isFullyInitialized = function () {
        return this.fullyInitialized_;
    };
    /**
     * Returns whether this node is potentially missing children due to a filter applied to the node
     * @return {boolean}
     */
    CacheNode.prototype.isFiltered = function () {
        return this.filtered_;
    };
    /**
     * @param {!Path} path
     * @return {boolean}
     */
    CacheNode.prototype.isCompleteForPath = function (path) {
        if (path.isEmpty()) {
            return this.isFullyInitialized() && !this.filtered_;
        }
        var childKey = path.getFront();
        return this.isCompleteForChild(childKey);
    };
    /**
     * @param {!string} key
     * @return {boolean}
     */
    CacheNode.prototype.isCompleteForChild = function (key) {
        return ((this.isFullyInitialized() && !this.filtered_) || this.node_.hasChild(key));
    };
    /**
     * @return {!Node}
     */
    CacheNode.prototype.getNode = function () {
        return this.node_;
    };
    return CacheNode;
}());
exports.CacheNode = CacheNode;



},{}],66:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * @constructor
 * @struct
 * @param {!string} type The event type
 * @param {!Node} snapshotNode The data
 * @param {string=} childName The name for this child, if it's a child event
 * @param {Node=} oldSnap Used for intermediate processing of child changed events
 * @param {string=} prevName The name for the previous child, if applicable
 */
var Change = /** @class */ (function () {
    function Change(type, snapshotNode, childName, oldSnap, prevName) {
        this.type = type;
        this.snapshotNode = snapshotNode;
        this.childName = childName;
        this.oldSnap = oldSnap;
        this.prevName = prevName;
    }
    /**
     * @param {!Node} snapshot
     * @return {!Change}
     */
    Change.valueChange = function (snapshot) {
        return new Change(Change.VALUE, snapshot);
    };
    /**
     * @param {string} childKey
     * @param {!Node} snapshot
     * @return {!Change}
     */
    Change.childAddedChange = function (childKey, snapshot) {
        return new Change(Change.CHILD_ADDED, snapshot, childKey);
    };
    /**
     * @param {string} childKey
     * @param {!Node} snapshot
     * @return {!Change}
     */
    Change.childRemovedChange = function (childKey, snapshot) {
        return new Change(Change.CHILD_REMOVED, snapshot, childKey);
    };
    /**
     * @param {string} childKey
     * @param {!Node} newSnapshot
     * @param {!Node} oldSnapshot
     * @return {!Change}
     */
    Change.childChangedChange = function (childKey, newSnapshot, oldSnapshot) {
        return new Change(Change.CHILD_CHANGED, newSnapshot, childKey, oldSnapshot);
    };
    /**
     * @param {string} childKey
     * @param {!Node} snapshot
     * @return {!Change}
     */
    Change.childMovedChange = function (childKey, snapshot) {
        return new Change(Change.CHILD_MOVED, snapshot, childKey);
    };
    //event types
    /** Event type for a child added */
    Change.CHILD_ADDED = 'child_added';
    /** Event type for a child removed */
    Change.CHILD_REMOVED = 'child_removed';
    /** Event type for a child changed */
    Change.CHILD_CHANGED = 'child_changed';
    /** Event type for a child moved */
    Change.CHILD_MOVED = 'child_moved';
    /** Event type for a value change */
    Change.VALUE = 'value';
    return Change;
}());
exports.Change = Change;



},{}],67:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var Change_1 = require("./Change");
var util_2 = require("@firebase/util");
/**
 * @constructor
 */
var ChildChangeAccumulator = /** @class */ (function () {
    function ChildChangeAccumulator() {
        this.changeMap_ = {};
    }
    /**
     * @param {!Change} change
     */
    ChildChangeAccumulator.prototype.trackChildChange = function (change) {
        var type = change.type;
        var childKey /** @type {!string} */ = change.childName;
        util_2.assert(type == Change_1.Change.CHILD_ADDED ||
            type == Change_1.Change.CHILD_CHANGED ||
            type == Change_1.Change.CHILD_REMOVED, 'Only child changes supported for tracking');
        util_2.assert(childKey !== '.priority', 'Only non-priority child changes can be tracked.');
        var oldChange = util_1.safeGet(this.changeMap_, childKey);
        if (oldChange) {
            var oldType = oldChange.type;
            if (type == Change_1.Change.CHILD_ADDED && oldType == Change_1.Change.CHILD_REMOVED) {
                this.changeMap_[childKey] = Change_1.Change.childChangedChange(childKey, change.snapshotNode, oldChange.snapshotNode);
            }
            else if (type == Change_1.Change.CHILD_REMOVED &&
                oldType == Change_1.Change.CHILD_ADDED) {
                delete this.changeMap_[childKey];
            }
            else if (type == Change_1.Change.CHILD_REMOVED &&
                oldType == Change_1.Change.CHILD_CHANGED) {
                this.changeMap_[childKey] = Change_1.Change.childRemovedChange(childKey, oldChange.oldSnap);
            }
            else if (type == Change_1.Change.CHILD_CHANGED &&
                oldType == Change_1.Change.CHILD_ADDED) {
                this.changeMap_[childKey] = Change_1.Change.childAddedChange(childKey, change.snapshotNode);
            }
            else if (type == Change_1.Change.CHILD_CHANGED &&
                oldType == Change_1.Change.CHILD_CHANGED) {
                this.changeMap_[childKey] = Change_1.Change.childChangedChange(childKey, change.snapshotNode, oldChange.oldSnap);
            }
            else {
                throw util_2.assertionError('Illegal combination of changes: ' +
                    change +
                    ' occurred after ' +
                    oldChange);
            }
        }
        else {
            this.changeMap_[childKey] = change;
        }
    };
    /**
     * @return {!Array.<!Change>}
     */
    ChildChangeAccumulator.prototype.getChanges = function () {
        return util_1.getValues(this.changeMap_);
    };
    return ChildChangeAccumulator;
}());
exports.ChildChangeAccumulator = ChildChangeAccumulator;



},{"./Change":66,"@firebase/util":92}],68:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var CacheNode_1 = require("./CacheNode");
/**
 * An implementation of CompleteChildSource that never returns any additional children
 *
 * @private
 * @constructor
 * @implements CompleteChildSource
 */
var NoCompleteChildSource_ = /** @class */ (function () {
    function NoCompleteChildSource_() {
    }
    /**
     * @inheritDoc
     */
    NoCompleteChildSource_.prototype.getCompleteChild = function (childKey) {
        return null;
    };
    /**
     * @inheritDoc
     */
    NoCompleteChildSource_.prototype.getChildAfterChild = function (index, child, reverse) {
        return null;
    };
    return NoCompleteChildSource_;
}());
exports.NoCompleteChildSource_ = NoCompleteChildSource_;
/**
 * Singleton instance.
 * @const
 * @type {!CompleteChildSource}
 */
exports.NO_COMPLETE_CHILD_SOURCE = new NoCompleteChildSource_();
/**
 * An implementation of CompleteChildSource that uses a WriteTree in addition to any other server data or
 * old event caches available to calculate complete children.
 *
 *
 * @implements CompleteChildSource
 */
var WriteTreeCompleteChildSource = /** @class */ (function () {
    /**
     * @param {!WriteTreeRef} writes_
     * @param {!ViewCache} viewCache_
     * @param {?Node} optCompleteServerCache_
     */
    function WriteTreeCompleteChildSource(writes_, viewCache_, optCompleteServerCache_) {
        if (optCompleteServerCache_ === void 0) { optCompleteServerCache_ = null; }
        this.writes_ = writes_;
        this.viewCache_ = viewCache_;
        this.optCompleteServerCache_ = optCompleteServerCache_;
    }
    /**
     * @inheritDoc
     */
    WriteTreeCompleteChildSource.prototype.getCompleteChild = function (childKey) {
        var node = this.viewCache_.getEventCache();
        if (node.isCompleteForChild(childKey)) {
            return node.getNode().getImmediateChild(childKey);
        }
        else {
            var serverNode = this.optCompleteServerCache_ != null
                ? new CacheNode_1.CacheNode(this.optCompleteServerCache_, true, false)
                : this.viewCache_.getServerCache();
            return this.writes_.calcCompleteChild(childKey, serverNode);
        }
    };
    /**
     * @inheritDoc
     */
    WriteTreeCompleteChildSource.prototype.getChildAfterChild = function (index, child, reverse) {
        var completeServerData = this.optCompleteServerCache_ != null
            ? this.optCompleteServerCache_
            : this.viewCache_.getCompleteServerSnap();
        var nodes = this.writes_.calcIndexedSlice(completeServerData, child, 1, reverse, index);
        if (nodes.length === 0) {
            return null;
        }
        else {
            return nodes[0];
        }
    };
    return WriteTreeCompleteChildSource;
}());
exports.WriteTreeCompleteChildSource = WriteTreeCompleteChildSource;



},{"./CacheNode":65}],69:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
/**
 * Encapsulates the data needed to raise an event
 * @implements {Event}
 */
var DataEvent = /** @class */ (function () {
    /**
     * @param {!string} eventType One of: value, child_added, child_changed, child_moved, child_removed
     * @param {!EventRegistration} eventRegistration The function to call to with the event data. User provided
     * @param {!DataSnapshot} snapshot The data backing the event
     * @param {?string=} prevName Optional, the name of the previous child for child_* events.
     */
    function DataEvent(eventType, eventRegistration, snapshot, prevName) {
        this.eventType = eventType;
        this.eventRegistration = eventRegistration;
        this.snapshot = snapshot;
        this.prevName = prevName;
    }
    /**
     * @inheritDoc
     */
    DataEvent.prototype.getPath = function () {
        var ref = this.snapshot.getRef();
        if (this.eventType === 'value') {
            return ref.path;
        }
        else {
            return ref.getParent().path;
        }
    };
    /**
     * @inheritDoc
     */
    DataEvent.prototype.getEventType = function () {
        return this.eventType;
    };
    /**
     * @inheritDoc
     */
    DataEvent.prototype.getEventRunner = function () {
        return this.eventRegistration.getEventRunner(this);
    };
    /**
     * @inheritDoc
     */
    DataEvent.prototype.toString = function () {
        return (this.getPath().toString() +
            ':' +
            this.eventType +
            ':' +
            util_1.stringify(this.snapshot.exportVal()));
    };
    return DataEvent;
}());
exports.DataEvent = DataEvent;
var CancelEvent = /** @class */ (function () {
    /**
     * @param {EventRegistration} eventRegistration
     * @param {Error} error
     * @param {!Path} path
     */
    function CancelEvent(eventRegistration, error, path) {
        this.eventRegistration = eventRegistration;
        this.error = error;
        this.path = path;
    }
    /**
     * @inheritDoc
     */
    CancelEvent.prototype.getPath = function () {
        return this.path;
    };
    /**
     * @inheritDoc
     */
    CancelEvent.prototype.getEventType = function () {
        return 'cancel';
    };
    /**
     * @inheritDoc
     */
    CancelEvent.prototype.getEventRunner = function () {
        return this.eventRegistration.getEventRunner(this);
    };
    /**
     * @inheritDoc
     */
    CancelEvent.prototype.toString = function () {
        return this.path.toString() + ':cancel';
    };
    return CancelEvent;
}());
exports.CancelEvent = CancelEvent;



},{"@firebase/util":92}],70:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Node_1 = require("../snap/Node");
var Change_1 = require("./Change");
var util_1 = require("@firebase/util");
/**
 * An EventGenerator is used to convert "raw" changes (Change) as computed by the
 * CacheDiffer into actual events (Event) that can be raised.  See generateEventsForChanges()
 * for details.
 *
 * @constructor
 */
var EventGenerator = /** @class */ (function () {
    /**
     *
     * @param {!Query} query_
     */
    function EventGenerator(query_) {
        this.query_ = query_;
        /**
         * @private
         * @type {!Index}
         */
        this.index_ = this.query_.getQueryParams().getIndex();
    }
    /**
     * Given a set of raw changes (no moved events and prevName not specified yet), and a set of
     * EventRegistrations that should be notified of these changes, generate the actual events to be raised.
     *
     * Notes:
     *  - child_moved events will be synthesized at this time for any child_changed events that affect
     *    our index.
     *  - prevName will be calculated based on the index ordering.
     *
     * @param {!Array.<!Change>} changes
     * @param {!Node} eventCache
     * @param {!Array.<!EventRegistration>} eventRegistrations
     * @return {!Array.<!Event>}
     */
    EventGenerator.prototype.generateEventsForChanges = function (changes, eventCache, eventRegistrations) {
        var _this = this;
        var events = [];
        var moves = [];
        changes.forEach(function (change) {
            if (change.type === Change_1.Change.CHILD_CHANGED &&
                _this.index_.indexedValueChanged(change.oldSnap, change.snapshotNode)) {
                moves.push(Change_1.Change.childMovedChange(change.childName, change.snapshotNode));
            }
        });
        this.generateEventsForType_(events, Change_1.Change.CHILD_REMOVED, changes, eventRegistrations, eventCache);
        this.generateEventsForType_(events, Change_1.Change.CHILD_ADDED, changes, eventRegistrations, eventCache);
        this.generateEventsForType_(events, Change_1.Change.CHILD_MOVED, moves, eventRegistrations, eventCache);
        this.generateEventsForType_(events, Change_1.Change.CHILD_CHANGED, changes, eventRegistrations, eventCache);
        this.generateEventsForType_(events, Change_1.Change.VALUE, changes, eventRegistrations, eventCache);
        return events;
    };
    /**
     * Given changes of a single change type, generate the corresponding events.
     *
     * @param {!Array.<!Event>} events
     * @param {!string} eventType
     * @param {!Array.<!Change>} changes
     * @param {!Array.<!EventRegistration>} registrations
     * @param {!Node} eventCache
     * @private
     */
    EventGenerator.prototype.generateEventsForType_ = function (events, eventType, changes, registrations, eventCache) {
        var _this = this;
        var filteredChanges = changes.filter(function (change) { return change.type === eventType; });
        filteredChanges.sort(this.compareChanges_.bind(this));
        filteredChanges.forEach(function (change) {
            var materializedChange = _this.materializeSingleChange_(change, eventCache);
            registrations.forEach(function (registration) {
                if (registration.respondsTo(change.type)) {
                    events.push(registration.createEvent(materializedChange, _this.query_));
                }
            });
        });
    };
    /**
     * @param {!Change} change
     * @param {!Node} eventCache
     * @return {!Change}
     * @private
     */
    EventGenerator.prototype.materializeSingleChange_ = function (change, eventCache) {
        if (change.type === 'value' || change.type === 'child_removed') {
            return change;
        }
        else {
            change.prevName = eventCache.getPredecessorChildName(
            /** @type {!string} */
            change.childName, change.snapshotNode, this.index_);
            return change;
        }
    };
    /**
     * @param {!Change} a
     * @param {!Change} b
     * @return {number}
     * @private
     */
    EventGenerator.prototype.compareChanges_ = function (a, b) {
        if (a.childName == null || b.childName == null) {
            throw util_1.assertionError('Should only compare child_ events.');
        }
        var aWrapped = new Node_1.NamedNode(a.childName, a.snapshotNode);
        var bWrapped = new Node_1.NamedNode(b.childName, b.snapshotNode);
        return this.index_.compare(aWrapped, bWrapped);
    };
    return EventGenerator;
}());
exports.EventGenerator = EventGenerator;



},{"../snap/Node":35,"./Change":66,"@firebase/util":92}],71:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("../util/util");
/**
 * The event queue serves a few purposes:
 * 1. It ensures we maintain event order in the face of event callbacks doing operations that result in more
 *    events being queued.
 * 2. raiseQueuedEvents() handles being called reentrantly nicely.  That is, if in the course of raising events,
 *    raiseQueuedEvents() is called again, the "inner" call will pick up raising events where the "outer" call
 *    left off, ensuring that the events are still raised synchronously and in order.
 * 3. You can use raiseEventsAtPath and raiseEventsForChangedPath to ensure only relevant previously-queued
 *    events are raised synchronously.
 *
 * NOTE: This can all go away if/when we move to async events.
 *
 * @constructor
 */
var EventQueue = /** @class */ (function () {
    function EventQueue() {
        /**
         * @private
         * @type {!Array.<EventList>}
         */
        this.eventLists_ = [];
        /**
         * Tracks recursion depth of raiseQueuedEvents_, for debugging purposes.
         * @private
         * @type {!number}
         */
        this.recursionDepth_ = 0;
    }
    /**
     * @param {!Array.<Event>} eventDataList The new events to queue.
     */
    EventQueue.prototype.queueEvents = function (eventDataList) {
        // We group events by path, storing them in a single EventList, to make it easier to skip over them quickly.
        var currList = null;
        for (var i = 0; i < eventDataList.length; i++) {
            var eventData = eventDataList[i];
            var eventPath = eventData.getPath();
            if (currList !== null && !eventPath.equals(currList.getPath())) {
                this.eventLists_.push(currList);
                currList = null;
            }
            if (currList === null) {
                currList = new EventList(eventPath);
            }
            currList.add(eventData);
        }
        if (currList) {
            this.eventLists_.push(currList);
        }
    };
    /**
     * Queues the specified events and synchronously raises all events (including previously queued ones)
     * for the specified path.
     *
     * It is assumed that the new events are all for the specified path.
     *
     * @param {!Path} path The path to raise events for.
     * @param {!Array.<Event>} eventDataList The new events to raise.
     */
    EventQueue.prototype.raiseEventsAtPath = function (path, eventDataList) {
        this.queueEvents(eventDataList);
        this.raiseQueuedEventsMatchingPredicate_(function (eventPath) {
            return eventPath.equals(path);
        });
    };
    /**
     * Queues the specified events and synchronously raises all events (including previously queued ones) for
     * locations related to the specified change path (i.e. all ancestors and descendants).
     *
     * It is assumed that the new events are all related (ancestor or descendant) to the specified path.
     *
     * @param {!Path} changedPath The path to raise events for.
     * @param {!Array.<!Event>} eventDataList The events to raise
     */
    EventQueue.prototype.raiseEventsForChangedPath = function (changedPath, eventDataList) {
        this.queueEvents(eventDataList);
        this.raiseQueuedEventsMatchingPredicate_(function (eventPath) {
            return eventPath.contains(changedPath) || changedPath.contains(eventPath);
        });
    };
    /**
     * @param {!function(!Path):boolean} predicate
     * @private
     */
    EventQueue.prototype.raiseQueuedEventsMatchingPredicate_ = function (predicate) {
        this.recursionDepth_++;
        var sentAll = true;
        for (var i = 0; i < this.eventLists_.length; i++) {
            var eventList = this.eventLists_[i];
            if (eventList) {
                var eventPath = eventList.getPath();
                if (predicate(eventPath)) {
                    this.eventLists_[i].raise();
                    this.eventLists_[i] = null;
                }
                else {
                    sentAll = false;
                }
            }
        }
        if (sentAll) {
            this.eventLists_ = [];
        }
        this.recursionDepth_--;
    };
    return EventQueue;
}());
exports.EventQueue = EventQueue;
/**
 * @param {!Path} path
 * @constructor
 */
var EventList = /** @class */ (function () {
    function EventList(path_) {
        this.path_ = path_;
        /**
         * @type {!Array.<Event>}
         * @private
         */
        this.events_ = [];
    }
    /**
     * @param {!Event} eventData
     */
    EventList.prototype.add = function (eventData) {
        this.events_.push(eventData);
    };
    /**
     * Iterates through the list and raises each event
     */
    EventList.prototype.raise = function () {
        for (var i = 0; i < this.events_.length; i++) {
            var eventData = this.events_[i];
            if (eventData !== null) {
                this.events_[i] = null;
                var eventFn = eventData.getEventRunner();
                if (util_1.logger) {
                    util_1.log('event: ' + eventData.toString());
                }
                util_1.exceptionGuard(eventFn);
            }
        }
    };
    /**
     * @return {!Path}
     */
    EventList.prototype.getPath = function () {
        return this.path_;
    };
    return EventList;
}());
exports.EventList = EventList;



},{"../util/util":63}],72:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var DataSnapshot_1 = require("../../api/DataSnapshot");
var Event_1 = require("./Event");
var util_1 = require("@firebase/util");
var util_2 = require("@firebase/util");
/**
 * Represents registration for 'value' events.
 */
var ValueEventRegistration = /** @class */ (function () {
    /**
     * @param {?function(!DataSnapshot)} callback_
     * @param {?function(Error)} cancelCallback_
     * @param {?Object} context_
     */
    function ValueEventRegistration(callback_, cancelCallback_, context_) {
        this.callback_ = callback_;
        this.cancelCallback_ = cancelCallback_;
        this.context_ = context_;
    }
    /**
     * @inheritDoc
     */
    ValueEventRegistration.prototype.respondsTo = function (eventType) {
        return eventType === 'value';
    };
    /**
     * @inheritDoc
     */
    ValueEventRegistration.prototype.createEvent = function (change, query) {
        var index = query.getQueryParams().getIndex();
        return new Event_1.DataEvent('value', this, new DataSnapshot_1.DataSnapshot(change.snapshotNode, query.getRef(), index));
    };
    /**
     * @inheritDoc
     */
    ValueEventRegistration.prototype.getEventRunner = function (eventData) {
        var ctx = this.context_;
        if (eventData.getEventType() === 'cancel') {
            util_2.assert(this.cancelCallback_, 'Raising a cancel event on a listener with no cancel callback');
            var cancelCB_1 = this.cancelCallback_;
            return function () {
                // We know that error exists, we checked above that this is a cancel event
                cancelCB_1.call(ctx, eventData.error);
            };
        }
        else {
            var cb_1 = this.callback_;
            return function () {
                cb_1.call(ctx, eventData.snapshot);
            };
        }
    };
    /**
     * @inheritDoc
     */
    ValueEventRegistration.prototype.createCancelEvent = function (error, path) {
        if (this.cancelCallback_) {
            return new Event_1.CancelEvent(this, error, path);
        }
        else {
            return null;
        }
    };
    /**
     * @inheritDoc
     */
    ValueEventRegistration.prototype.matches = function (other) {
        if (!(other instanceof ValueEventRegistration)) {
            return false;
        }
        else if (!other.callback_ || !this.callback_) {
            // If no callback specified, we consider it to match any callback.
            return true;
        }
        else {
            return (other.callback_ === this.callback_ && other.context_ === this.context_);
        }
    };
    /**
     * @inheritDoc
     */
    ValueEventRegistration.prototype.hasAnyCallback = function () {
        return this.callback_ !== null;
    };
    return ValueEventRegistration;
}());
exports.ValueEventRegistration = ValueEventRegistration;
/**
 * Represents the registration of 1 or more child_xxx events.
 *
 * Currently, it is always exactly 1 child_xxx event, but the idea is we might let you
 * register a group of callbacks together in the future.
 *
 * @constructor
 * @implements {EventRegistration}
 */
var ChildEventRegistration = /** @class */ (function () {
    /**
     * @param {?Object.<string, function(!DataSnapshot, ?string=)>} callbacks_
     * @param {?function(Error)} cancelCallback_
     * @param {Object=} context_
     */
    function ChildEventRegistration(callbacks_, cancelCallback_, context_) {
        this.callbacks_ = callbacks_;
        this.cancelCallback_ = cancelCallback_;
        this.context_ = context_;
    }
    /**
     * @inheritDoc
     */
    ChildEventRegistration.prototype.respondsTo = function (eventType) {
        var eventToCheck = eventType === 'children_added' ? 'child_added' : eventType;
        eventToCheck =
            eventToCheck === 'children_removed' ? 'child_removed' : eventToCheck;
        return util_1.contains(this.callbacks_, eventToCheck);
    };
    /**
     * @inheritDoc
     */
    ChildEventRegistration.prototype.createCancelEvent = function (error, path) {
        if (this.cancelCallback_) {
            return new Event_1.CancelEvent(this, error, path);
        }
        else {
            return null;
        }
    };
    /**
     * @inheritDoc
     */
    ChildEventRegistration.prototype.createEvent = function (change, query) {
        util_2.assert(change.childName != null, 'Child events should have a childName.');
        var ref = query.getRef().child(/** @type {!string} */ (change.childName));
        var index = query.getQueryParams().getIndex();
        return new Event_1.DataEvent(change.type, this, new DataSnapshot_1.DataSnapshot(change.snapshotNode, ref, index), change.prevName);
    };
    /**
     * @inheritDoc
     */
    ChildEventRegistration.prototype.getEventRunner = function (eventData) {
        var ctx = this.context_;
        if (eventData.getEventType() === 'cancel') {
            util_2.assert(this.cancelCallback_, 'Raising a cancel event on a listener with no cancel callback');
            var cancelCB_2 = this.cancelCallback_;
            return function () {
                // We know that error exists, we checked above that this is a cancel event
                cancelCB_2.call(ctx, eventData.error);
            };
        }
        else {
            var cb_2 = this.callbacks_[eventData.eventType];
            return function () {
                cb_2.call(ctx, eventData.snapshot, eventData.prevName);
            };
        }
    };
    /**
     * @inheritDoc
     */
    ChildEventRegistration.prototype.matches = function (other) {
        if (other instanceof ChildEventRegistration) {
            if (!this.callbacks_ || !other.callbacks_) {
                return true;
            }
            else if (this.context_ === other.context_) {
                var otherCount = util_1.getCount(other.callbacks_);
                var thisCount = util_1.getCount(this.callbacks_);
                if (otherCount === thisCount) {
                    // If count is 1, do an exact match on eventType, if either is defined but null, it's a match.
                    //  If event types don't match, not a match
                    // If count is not 1, exact match across all
                    if (otherCount === 1) {
                        var otherKey /** @type {!string} */ = util_1.getAnyKey(other.callbacks_);
                        var thisKey /** @type {!string} */ = util_1.getAnyKey(this.callbacks_);
                        return (thisKey === otherKey &&
                            (!other.callbacks_[otherKey] ||
                                !this.callbacks_[thisKey] ||
                                other.callbacks_[otherKey] === this.callbacks_[thisKey]));
                    }
                    else {
                        // Exact match on each key.
                        return util_1.every(this.callbacks_, function (eventType, cb) { return other.callbacks_[eventType] === cb; });
                    }
                }
            }
        }
        return false;
    };
    /**
     * @inheritDoc
     */
    ChildEventRegistration.prototype.hasAnyCallback = function () {
        return this.callbacks_ !== null;
    };
    return ChildEventRegistration;
}());
exports.ChildEventRegistration = ChildEventRegistration;



},{"../../api/DataSnapshot":5,"./Event":69,"@firebase/util":92}],73:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var util_2 = require("../util/util");
var KeyIndex_1 = require("../snap/indexes/KeyIndex");
var PriorityIndex_1 = require("../snap/indexes/PriorityIndex");
var ValueIndex_1 = require("../snap/indexes/ValueIndex");
var PathIndex_1 = require("../snap/indexes/PathIndex");
var IndexedFilter_1 = require("./filter/IndexedFilter");
var LimitedFilter_1 = require("./filter/LimitedFilter");
var RangedFilter_1 = require("./filter/RangedFilter");
var util_3 = require("@firebase/util");
/**
 * This class is an immutable-from-the-public-api struct containing a set of query parameters defining a
 * range to be returned for a particular location. It is assumed that validation of parameters is done at the
 * user-facing API level, so it is not done here.
 * @constructor
 */
var QueryParams = /** @class */ (function () {
    function QueryParams() {
        this.limitSet_ = false;
        this.startSet_ = false;
        this.startNameSet_ = false;
        this.endSet_ = false;
        this.endNameSet_ = false;
        this.limit_ = 0;
        this.viewFrom_ = '';
        this.indexStartValue_ = null;
        this.indexStartName_ = '';
        this.indexEndValue_ = null;
        this.indexEndName_ = '';
        this.index_ = PriorityIndex_1.PRIORITY_INDEX;
    }
    /**
     * @return {boolean}
     */
    QueryParams.prototype.hasStart = function () {
        return this.startSet_;
    };
    /**
     * @return {boolean} True if it would return from left.
     */
    QueryParams.prototype.isViewFromLeft = function () {
        if (this.viewFrom_ === '') {
            // limit(), rather than limitToFirst or limitToLast was called.
            // This means that only one of startSet_ and endSet_ is true. Use them
            // to calculate which side of the view to anchor to. If neither is set,
            // anchor to the end.
            return this.startSet_;
        }
        else {
            return (this.viewFrom_ === QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT);
        }
    };
    /**
     * Only valid to call if hasStart() returns true
     * @return {*}
     */
    QueryParams.prototype.getIndexStartValue = function () {
        util_1.assert(this.startSet_, 'Only valid if start has been set');
        return this.indexStartValue_;
    };
    /**
     * Only valid to call if hasStart() returns true.
     * Returns the starting key name for the range defined by these query parameters
     * @return {!string}
     */
    QueryParams.prototype.getIndexStartName = function () {
        util_1.assert(this.startSet_, 'Only valid if start has been set');
        if (this.startNameSet_) {
            return this.indexStartName_;
        }
        else {
            return util_2.MIN_NAME;
        }
    };
    /**
     * @return {boolean}
     */
    QueryParams.prototype.hasEnd = function () {
        return this.endSet_;
    };
    /**
     * Only valid to call if hasEnd() returns true.
     * @return {*}
     */
    QueryParams.prototype.getIndexEndValue = function () {
        util_1.assert(this.endSet_, 'Only valid if end has been set');
        return this.indexEndValue_;
    };
    /**
     * Only valid to call if hasEnd() returns true.
     * Returns the end key name for the range defined by these query parameters
     * @return {!string}
     */
    QueryParams.prototype.getIndexEndName = function () {
        util_1.assert(this.endSet_, 'Only valid if end has been set');
        if (this.endNameSet_) {
            return this.indexEndName_;
        }
        else {
            return util_2.MAX_NAME;
        }
    };
    /**
     * @return {boolean}
     */
    QueryParams.prototype.hasLimit = function () {
        return this.limitSet_;
    };
    /**
     * @return {boolean} True if a limit has been set and it has been explicitly anchored
     */
    QueryParams.prototype.hasAnchoredLimit = function () {
        return this.limitSet_ && this.viewFrom_ !== '';
    };
    /**
     * Only valid to call if hasLimit() returns true
     * @return {!number}
     */
    QueryParams.prototype.getLimit = function () {
        util_1.assert(this.limitSet_, 'Only valid if limit has been set');
        return this.limit_;
    };
    /**
     * @return {!Index}
     */
    QueryParams.prototype.getIndex = function () {
        return this.index_;
    };
    /**
     * @return {!QueryParams}
     * @private
     */
    QueryParams.prototype.copy_ = function () {
        var copy = new QueryParams();
        copy.limitSet_ = this.limitSet_;
        copy.limit_ = this.limit_;
        copy.startSet_ = this.startSet_;
        copy.indexStartValue_ = this.indexStartValue_;
        copy.startNameSet_ = this.startNameSet_;
        copy.indexStartName_ = this.indexStartName_;
        copy.endSet_ = this.endSet_;
        copy.indexEndValue_ = this.indexEndValue_;
        copy.endNameSet_ = this.endNameSet_;
        copy.indexEndName_ = this.indexEndName_;
        copy.index_ = this.index_;
        copy.viewFrom_ = this.viewFrom_;
        return copy;
    };
    /**
     * @param {!number} newLimit
     * @return {!QueryParams}
     */
    QueryParams.prototype.limit = function (newLimit) {
        var newParams = this.copy_();
        newParams.limitSet_ = true;
        newParams.limit_ = newLimit;
        newParams.viewFrom_ = '';
        return newParams;
    };
    /**
     * @param {!number} newLimit
     * @return {!QueryParams}
     */
    QueryParams.prototype.limitToFirst = function (newLimit) {
        var newParams = this.copy_();
        newParams.limitSet_ = true;
        newParams.limit_ = newLimit;
        newParams.viewFrom_ = QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT;
        return newParams;
    };
    /**
     * @param {!number} newLimit
     * @return {!QueryParams}
     */
    QueryParams.prototype.limitToLast = function (newLimit) {
        var newParams = this.copy_();
        newParams.limitSet_ = true;
        newParams.limit_ = newLimit;
        newParams.viewFrom_ = QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT;
        return newParams;
    };
    /**
     * @param {*} indexValue
     * @param {?string=} key
     * @return {!QueryParams}
     */
    QueryParams.prototype.startAt = function (indexValue, key) {
        var newParams = this.copy_();
        newParams.startSet_ = true;
        if (!(indexValue !== undefined)) {
            indexValue = null;
        }
        newParams.indexStartValue_ = indexValue;
        if (key != null) {
            newParams.startNameSet_ = true;
            newParams.indexStartName_ = key;
        }
        else {
            newParams.startNameSet_ = false;
            newParams.indexStartName_ = '';
        }
        return newParams;
    };
    /**
     * @param {*} indexValue
     * @param {?string=} key
     * @return {!QueryParams}
     */
    QueryParams.prototype.endAt = function (indexValue, key) {
        var newParams = this.copy_();
        newParams.endSet_ = true;
        if (!(indexValue !== undefined)) {
            indexValue = null;
        }
        newParams.indexEndValue_ = indexValue;
        if (key !== undefined) {
            newParams.endNameSet_ = true;
            newParams.indexEndName_ = key;
        }
        else {
            newParams.endNameSet_ = false;
            newParams.indexEndName_ = '';
        }
        return newParams;
    };
    /**
     * @param {!Index} index
     * @return {!QueryParams}
     */
    QueryParams.prototype.orderBy = function (index) {
        var newParams = this.copy_();
        newParams.index_ = index;
        return newParams;
    };
    /**
     * @return {!Object}
     */
    QueryParams.prototype.getQueryObject = function () {
        var WIRE_PROTOCOL_CONSTANTS = QueryParams.WIRE_PROTOCOL_CONSTANTS_;
        var obj = {};
        if (this.startSet_) {
            obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_VALUE] = this.indexStartValue_;
            if (this.startNameSet_) {
                obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_NAME] = this.indexStartName_;
            }
        }
        if (this.endSet_) {
            obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_VALUE] = this.indexEndValue_;
            if (this.endNameSet_) {
                obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_NAME] = this.indexEndName_;
            }
        }
        if (this.limitSet_) {
            obj[WIRE_PROTOCOL_CONSTANTS.LIMIT] = this.limit_;
            var viewFrom = this.viewFrom_;
            if (viewFrom === '') {
                if (this.isViewFromLeft()) {
                    viewFrom = WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_LEFT;
                }
                else {
                    viewFrom = WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_RIGHT;
                }
            }
            obj[WIRE_PROTOCOL_CONSTANTS.VIEW_FROM] = viewFrom;
        }
        // For now, priority index is the default, so we only specify if it's some other index
        if (this.index_ !== PriorityIndex_1.PRIORITY_INDEX) {
            obj[WIRE_PROTOCOL_CONSTANTS.INDEX] = this.index_.toString();
        }
        return obj;
    };
    /**
     * @return {boolean}
     */
    QueryParams.prototype.loadsAllData = function () {
        return !(this.startSet_ || this.endSet_ || this.limitSet_);
    };
    /**
     * @return {boolean}
     */
    QueryParams.prototype.isDefault = function () {
        return this.loadsAllData() && this.index_ == PriorityIndex_1.PRIORITY_INDEX;
    };
    /**
     * @return {!NodeFilter}
     */
    QueryParams.prototype.getNodeFilter = function () {
        if (this.loadsAllData()) {
            return new IndexedFilter_1.IndexedFilter(this.getIndex());
        }
        else if (this.hasLimit()) {
            return new LimitedFilter_1.LimitedFilter(this);
        }
        else {
            return new RangedFilter_1.RangedFilter(this);
        }
    };
    /**
     * Returns a set of REST query string parameters representing this query.
     *
     * @return {!Object.<string,*>} query string parameters
     */
    QueryParams.prototype.toRestQueryStringParameters = function () {
        var REST_CONSTANTS = QueryParams.REST_QUERY_CONSTANTS_;
        var qs = {};
        if (this.isDefault()) {
            return qs;
        }
        var orderBy;
        if (this.index_ === PriorityIndex_1.PRIORITY_INDEX) {
            orderBy = REST_CONSTANTS.PRIORITY_INDEX;
        }
        else if (this.index_ === ValueIndex_1.VALUE_INDEX) {
            orderBy = REST_CONSTANTS.VALUE_INDEX;
        }
        else if (this.index_ === KeyIndex_1.KEY_INDEX) {
            orderBy = REST_CONSTANTS.KEY_INDEX;
        }
        else {
            util_1.assert(this.index_ instanceof PathIndex_1.PathIndex, 'Unrecognized index type!');
            orderBy = this.index_.toString();
        }
        qs[REST_CONSTANTS.ORDER_BY] = util_3.stringify(orderBy);
        if (this.startSet_) {
            qs[REST_CONSTANTS.START_AT] = util_3.stringify(this.indexStartValue_);
            if (this.startNameSet_) {
                qs[REST_CONSTANTS.START_AT] += ',' + util_3.stringify(this.indexStartName_);
            }
        }
        if (this.endSet_) {
            qs[REST_CONSTANTS.END_AT] = util_3.stringify(this.indexEndValue_);
            if (this.endNameSet_) {
                qs[REST_CONSTANTS.END_AT] += ',' + util_3.stringify(this.indexEndName_);
            }
        }
        if (this.limitSet_) {
            if (this.isViewFromLeft()) {
                qs[REST_CONSTANTS.LIMIT_TO_FIRST] = this.limit_;
            }
            else {
                qs[REST_CONSTANTS.LIMIT_TO_LAST] = this.limit_;
            }
        }
        return qs;
    };
    /**
     * Wire Protocol Constants
     * @const
     * @enum {string}
     * @private
     */
    QueryParams.WIRE_PROTOCOL_CONSTANTS_ = {
        INDEX_START_VALUE: 'sp',
        INDEX_START_NAME: 'sn',
        INDEX_END_VALUE: 'ep',
        INDEX_END_NAME: 'en',
        LIMIT: 'l',
        VIEW_FROM: 'vf',
        VIEW_FROM_LEFT: 'l',
        VIEW_FROM_RIGHT: 'r',
        INDEX: 'i'
    };
    /**
     * REST Query Constants
     * @const
     * @enum {string}
     * @private
     */
    QueryParams.REST_QUERY_CONSTANTS_ = {
        ORDER_BY: 'orderBy',
        PRIORITY_INDEX: '$priority',
        VALUE_INDEX: '$value',
        KEY_INDEX: '$key',
        START_AT: 'startAt',
        END_AT: 'endAt',
        LIMIT_TO_FIRST: 'limitToFirst',
        LIMIT_TO_LAST: 'limitToLast'
    };
    /**
     * Default, empty query parameters
     * @type {!QueryParams}
     * @const
     */
    QueryParams.DEFAULT = new QueryParams();
    return QueryParams;
}());
exports.QueryParams = QueryParams;



},{"../snap/indexes/KeyIndex":39,"../snap/indexes/PathIndex":40,"../snap/indexes/PriorityIndex":41,"../snap/indexes/ValueIndex":42,"../util/util":63,"./filter/IndexedFilter":77,"./filter/LimitedFilter":78,"./filter/RangedFilter":79,"@firebase/util":92}],74:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var IndexedFilter_1 = require("./filter/IndexedFilter");
var ViewProcessor_1 = require("./ViewProcessor");
var ChildrenNode_1 = require("../snap/ChildrenNode");
var CacheNode_1 = require("./CacheNode");
var ViewCache_1 = require("./ViewCache");
var EventGenerator_1 = require("./EventGenerator");
var util_1 = require("@firebase/util");
var Operation_1 = require("../operation/Operation");
var Change_1 = require("./Change");
var PriorityIndex_1 = require("../snap/indexes/PriorityIndex");
/**
 * A view represents a specific location and query that has 1 or more event registrations.
 *
 * It does several things:
 *  - Maintains the list of event registrations for this location/query.
 *  - Maintains a cache of the data visible for this location/query.
 *  - Applies new operations (via applyOperation), updates the cache, and based on the event
 *    registrations returns the set of events to be raised.
 * @constructor
 */
var View = /** @class */ (function () {
    /**
     *
     * @param {!Query} query_
     * @param {!ViewCache} initialViewCache
     */
    function View(query_, initialViewCache) {
        this.query_ = query_;
        this.eventRegistrations_ = [];
        var params = this.query_.getQueryParams();
        var indexFilter = new IndexedFilter_1.IndexedFilter(params.getIndex());
        var filter = params.getNodeFilter();
        /**
         * @type {ViewProcessor}
         * @private
         */
        this.processor_ = new ViewProcessor_1.ViewProcessor(filter);
        var initialServerCache = initialViewCache.getServerCache();
        var initialEventCache = initialViewCache.getEventCache();
        // Don't filter server node with other filter than index, wait for tagged listen
        var serverSnap = indexFilter.updateFullNode(ChildrenNode_1.ChildrenNode.EMPTY_NODE, initialServerCache.getNode(), null);
        var eventSnap = filter.updateFullNode(ChildrenNode_1.ChildrenNode.EMPTY_NODE, initialEventCache.getNode(), null);
        var newServerCache = new CacheNode_1.CacheNode(serverSnap, initialServerCache.isFullyInitialized(), indexFilter.filtersNodes());
        var newEventCache = new CacheNode_1.CacheNode(eventSnap, initialEventCache.isFullyInitialized(), filter.filtersNodes());
        /**
         * @type {!ViewCache}
         * @private
         */
        this.viewCache_ = new ViewCache_1.ViewCache(newEventCache, newServerCache);
        /**
         * @type {!EventGenerator}
         * @private
         */
        this.eventGenerator_ = new EventGenerator_1.EventGenerator(this.query_);
    }
    /**
     * @return {!Query}
     */
    View.prototype.getQuery = function () {
        return this.query_;
    };
    /**
     * @return {?Node}
     */
    View.prototype.getServerCache = function () {
        return this.viewCache_.getServerCache().getNode();
    };
    /**
     * @param {!Path} path
     * @return {?Node}
     */
    View.prototype.getCompleteServerCache = function (path) {
        var cache = this.viewCache_.getCompleteServerSnap();
        if (cache) {
            // If this isn't a "loadsAllData" view, then cache isn't actually a complete cache and
            // we need to see if it contains the child we're interested in.
            if (this.query_.getQueryParams().loadsAllData() ||
                (!path.isEmpty() && !cache.getImmediateChild(path.getFront()).isEmpty())) {
                return cache.getChild(path);
            }
        }
        return null;
    };
    /**
     * @return {boolean}
     */
    View.prototype.isEmpty = function () {
        return this.eventRegistrations_.length === 0;
    };
    /**
     * @param {!EventRegistration} eventRegistration
     */
    View.prototype.addEventRegistration = function (eventRegistration) {
        this.eventRegistrations_.push(eventRegistration);
    };
    /**
     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.
     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.
     * @return {!Array.<!Event>} Cancel events, if cancelError was provided.
     */
    View.prototype.removeEventRegistration = function (eventRegistration, cancelError) {
        var cancelEvents = [];
        if (cancelError) {
            util_1.assert(eventRegistration == null, 'A cancel should cancel all event registrations.');
            var path_1 = this.query_.path;
            this.eventRegistrations_.forEach(function (registration) {
                cancelError /** @type {!Error} */ = cancelError;
                var maybeEvent = registration.createCancelEvent(cancelError, path_1);
                if (maybeEvent) {
                    cancelEvents.push(maybeEvent);
                }
            });
        }
        if (eventRegistration) {
            var remaining = [];
            for (var i = 0; i < this.eventRegistrations_.length; ++i) {
                var existing = this.eventRegistrations_[i];
                if (!existing.matches(eventRegistration)) {
                    remaining.push(existing);
                }
                else if (eventRegistration.hasAnyCallback()) {
                    // We're removing just this one
                    remaining = remaining.concat(this.eventRegistrations_.slice(i + 1));
                    break;
                }
            }
            this.eventRegistrations_ = remaining;
        }
        else {
            this.eventRegistrations_ = [];
        }
        return cancelEvents;
    };
    /**
     * Applies the given Operation, updates our cache, and returns the appropriate events.
     *
     * @param {!Operation} operation
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} completeServerCache
     * @return {!Array.<!Event>}
     */
    View.prototype.applyOperation = function (operation, writesCache, completeServerCache) {
        if (operation.type === Operation_1.OperationType.MERGE &&
            operation.source.queryId !== null) {
            util_1.assert(this.viewCache_.getCompleteServerSnap(), 'We should always have a full cache before handling merges');
            util_1.assert(this.viewCache_.getCompleteEventSnap(), 'Missing event cache, even though we have a server cache');
        }
        var oldViewCache = this.viewCache_;
        var result = this.processor_.applyOperation(oldViewCache, operation, writesCache, completeServerCache);
        this.processor_.assertIndexed(result.viewCache);
        util_1.assert(result.viewCache.getServerCache().isFullyInitialized() ||
            !oldViewCache.getServerCache().isFullyInitialized(), 'Once a server snap is complete, it should never go back');
        this.viewCache_ = result.viewCache;
        return this.generateEventsForChanges_(result.changes, result.viewCache.getEventCache().getNode(), null);
    };
    /**
     * @param {!EventRegistration} registration
     * @return {!Array.<!Event>}
     */
    View.prototype.getInitialEvents = function (registration) {
        var eventSnap = this.viewCache_.getEventCache();
        var initialChanges = [];
        if (!eventSnap.getNode().isLeafNode()) {
            var eventNode = eventSnap.getNode();
            eventNode.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (key, childNode) {
                initialChanges.push(Change_1.Change.childAddedChange(key, childNode));
            });
        }
        if (eventSnap.isFullyInitialized()) {
            initialChanges.push(Change_1.Change.valueChange(eventSnap.getNode()));
        }
        return this.generateEventsForChanges_(initialChanges, eventSnap.getNode(), registration);
    };
    /**
     * @private
     * @param {!Array.<!Change>} changes
     * @param {!Node} eventCache
     * @param {EventRegistration=} eventRegistration
     * @return {!Array.<!Event>}
     */
    View.prototype.generateEventsForChanges_ = function (changes, eventCache, eventRegistration) {
        var registrations = eventRegistration
            ? [eventRegistration]
            : this.eventRegistrations_;
        return this.eventGenerator_.generateEventsForChanges(changes, eventCache, registrations);
    };
    return View;
}());
exports.View = View;



},{"../operation/Operation":30,"../snap/ChildrenNode":32,"../snap/indexes/PriorityIndex":41,"./CacheNode":65,"./Change":66,"./EventGenerator":70,"./ViewCache":75,"./ViewProcessor":76,"./filter/IndexedFilter":77,"@firebase/util":92}],75:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var ChildrenNode_1 = require("../snap/ChildrenNode");
var CacheNode_1 = require("./CacheNode");
/**
 * Stores the data we have cached for a view.
 *
 * serverSnap is the cached server data, eventSnap is the cached event data (server data plus any local writes).
 *
 * @constructor
 */
var ViewCache = /** @class */ (function () {
    /**
     *
     * @param {!CacheNode} eventCache_
     * @param {!CacheNode} serverCache_
     */
    function ViewCache(eventCache_, serverCache_) {
        this.eventCache_ = eventCache_;
        this.serverCache_ = serverCache_;
    }
    /**
     * @param {!Node} eventSnap
     * @param {boolean} complete
     * @param {boolean} filtered
     * @return {!ViewCache}
     */
    ViewCache.prototype.updateEventSnap = function (eventSnap, complete, filtered) {
        return new ViewCache(new CacheNode_1.CacheNode(eventSnap, complete, filtered), this.serverCache_);
    };
    /**
     * @param {!Node} serverSnap
     * @param {boolean} complete
     * @param {boolean} filtered
     * @return {!ViewCache}
     */
    ViewCache.prototype.updateServerSnap = function (serverSnap, complete, filtered) {
        return new ViewCache(this.eventCache_, new CacheNode_1.CacheNode(serverSnap, complete, filtered));
    };
    /**
     * @return {!CacheNode}
     */
    ViewCache.prototype.getEventCache = function () {
        return this.eventCache_;
    };
    /**
     * @return {?Node}
     */
    ViewCache.prototype.getCompleteEventSnap = function () {
        return this.eventCache_.isFullyInitialized()
            ? this.eventCache_.getNode()
            : null;
    };
    /**
     * @return {!CacheNode}
     */
    ViewCache.prototype.getServerCache = function () {
        return this.serverCache_;
    };
    /**
     * @return {?Node}
     */
    ViewCache.prototype.getCompleteServerSnap = function () {
        return this.serverCache_.isFullyInitialized()
            ? this.serverCache_.getNode()
            : null;
    };
    /**
     * @const
     * @type {ViewCache}
     */
    ViewCache.Empty = new ViewCache(new CacheNode_1.CacheNode(ChildrenNode_1.ChildrenNode.EMPTY_NODE, 
    /*fullyInitialized=*/ false, 
    /*filtered=*/ false), new CacheNode_1.CacheNode(ChildrenNode_1.ChildrenNode.EMPTY_NODE, 
    /*fullyInitialized=*/ false, 
    /*filtered=*/ false));
    return ViewCache;
}());
exports.ViewCache = ViewCache;



},{"../snap/ChildrenNode":32,"./CacheNode":65}],76:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Operation_1 = require("../operation/Operation");
var util_1 = require("@firebase/util");
var ChildChangeAccumulator_1 = require("./ChildChangeAccumulator");
var Change_1 = require("./Change");
var ChildrenNode_1 = require("../snap/ChildrenNode");
var KeyIndex_1 = require("../snap/indexes/KeyIndex");
var ImmutableTree_1 = require("../util/ImmutableTree");
var Path_1 = require("../util/Path");
var CompleteChildSource_1 = require("./CompleteChildSource");
/**
 * @constructor
 * @struct
 */
var ProcessorResult = /** @class */ (function () {
    /**
     * @param {!ViewCache} viewCache
     * @param {!Array.<!Change>} changes
     */
    function ProcessorResult(viewCache, changes) {
        this.viewCache = viewCache;
        this.changes = changes;
    }
    return ProcessorResult;
}());
exports.ProcessorResult = ProcessorResult;
/**
 * @constructor
 */
var ViewProcessor = /** @class */ (function () {
    /**
     * @param {!NodeFilter} filter_
     */
    function ViewProcessor(filter_) {
        this.filter_ = filter_;
    }
    /**
     * @param {!ViewCache} viewCache
     */
    ViewProcessor.prototype.assertIndexed = function (viewCache) {
        util_1.assert(viewCache
            .getEventCache()
            .getNode()
            .isIndexed(this.filter_.getIndex()), 'Event snap not indexed');
        util_1.assert(viewCache
            .getServerCache()
            .getNode()
            .isIndexed(this.filter_.getIndex()), 'Server snap not indexed');
    };
    /**
     * @param {!ViewCache} oldViewCache
     * @param {!Operation} operation
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} completeCache
     * @return {!ProcessorResult}
     */
    ViewProcessor.prototype.applyOperation = function (oldViewCache, operation, writesCache, completeCache) {
        var accumulator = new ChildChangeAccumulator_1.ChildChangeAccumulator();
        var newViewCache, filterServerNode;
        if (operation.type === Operation_1.OperationType.OVERWRITE) {
            var overwrite = operation;
            if (overwrite.source.fromUser) {
                newViewCache = this.applyUserOverwrite_(oldViewCache, overwrite.path, overwrite.snap, writesCache, completeCache, accumulator);
            }
            else {
                util_1.assert(overwrite.source.fromServer, 'Unknown source.');
                // We filter the node if it's a tagged update or the node has been previously filtered  and the
                // update is not at the root in which case it is ok (and necessary) to mark the node unfiltered
                // again
                filterServerNode =
                    overwrite.source.tagged ||
                        (oldViewCache.getServerCache().isFiltered() &&
                            !overwrite.path.isEmpty());
                newViewCache = this.applyServerOverwrite_(oldViewCache, overwrite.path, overwrite.snap, writesCache, completeCache, filterServerNode, accumulator);
            }
        }
        else if (operation.type === Operation_1.OperationType.MERGE) {
            var merge = operation;
            if (merge.source.fromUser) {
                newViewCache = this.applyUserMerge_(oldViewCache, merge.path, merge.children, writesCache, completeCache, accumulator);
            }
            else {
                util_1.assert(merge.source.fromServer, 'Unknown source.');
                // We filter the node if it's a tagged update or the node has been previously filtered
                filterServerNode =
                    merge.source.tagged || oldViewCache.getServerCache().isFiltered();
                newViewCache = this.applyServerMerge_(oldViewCache, merge.path, merge.children, writesCache, completeCache, filterServerNode, accumulator);
            }
        }
        else if (operation.type === Operation_1.OperationType.ACK_USER_WRITE) {
            var ackUserWrite = operation;
            if (!ackUserWrite.revert) {
                newViewCache = this.ackUserWrite_(oldViewCache, ackUserWrite.path, ackUserWrite.affectedTree, writesCache, completeCache, accumulator);
            }
            else {
                newViewCache = this.revertUserWrite_(oldViewCache, ackUserWrite.path, writesCache, completeCache, accumulator);
            }
        }
        else if (operation.type === Operation_1.OperationType.LISTEN_COMPLETE) {
            newViewCache = this.listenComplete_(oldViewCache, operation.path, writesCache, accumulator);
        }
        else {
            throw util_1.assertionError('Unknown operation type: ' + operation.type);
        }
        var changes = accumulator.getChanges();
        ViewProcessor.maybeAddValueEvent_(oldViewCache, newViewCache, changes);
        return new ProcessorResult(newViewCache, changes);
    };
    /**
     * @param {!ViewCache} oldViewCache
     * @param {!ViewCache} newViewCache
     * @param {!Array.<!Change>} accumulator
     * @private
     */
    ViewProcessor.maybeAddValueEvent_ = function (oldViewCache, newViewCache, accumulator) {
        var eventSnap = newViewCache.getEventCache();
        if (eventSnap.isFullyInitialized()) {
            var isLeafOrEmpty = eventSnap.getNode().isLeafNode() || eventSnap.getNode().isEmpty();
            var oldCompleteSnap = oldViewCache.getCompleteEventSnap();
            if (accumulator.length > 0 ||
                !oldViewCache.getEventCache().isFullyInitialized() ||
                (isLeafOrEmpty &&
                    !eventSnap
                        .getNode()
                        .equals(/** @type {!Node} */ (oldCompleteSnap))) ||
                !eventSnap
                    .getNode()
                    .getPriority()
                    .equals(oldCompleteSnap.getPriority())) {
                accumulator.push(Change_1.Change.valueChange(
                /** @type {!Node} */ newViewCache.getCompleteEventSnap()));
            }
        }
    };
    /**
     * @param {!ViewCache} viewCache
     * @param {!Path} changePath
     * @param {!WriteTreeRef} writesCache
     * @param {!CompleteChildSource} source
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.generateEventCacheAfterServerEvent_ = function (viewCache, changePath, writesCache, source, accumulator) {
        var oldEventSnap = viewCache.getEventCache();
        if (writesCache.shadowingWrite(changePath) != null) {
            // we have a shadowing write, ignore changes
            return viewCache;
        }
        else {
            var newEventCache = void 0, serverNode = void 0;
            if (changePath.isEmpty()) {
                // TODO: figure out how this plays with "sliding ack windows"
                util_1.assert(viewCache.getServerCache().isFullyInitialized(), 'If change path is empty, we must have complete server data');
                if (viewCache.getServerCache().isFiltered()) {
                    // We need to special case this, because we need to only apply writes to complete children, or
                    // we might end up raising events for incomplete children. If the server data is filtered deep
                    // writes cannot be guaranteed to be complete
                    var serverCache = viewCache.getCompleteServerSnap();
                    var completeChildren = serverCache instanceof ChildrenNode_1.ChildrenNode
                        ? serverCache
                        : ChildrenNode_1.ChildrenNode.EMPTY_NODE;
                    var completeEventChildren = writesCache.calcCompleteEventChildren(completeChildren);
                    newEventCache = this.filter_.updateFullNode(viewCache.getEventCache().getNode(), completeEventChildren, accumulator);
                }
                else {
                    var completeNode = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());
                    newEventCache = this.filter_.updateFullNode(viewCache.getEventCache().getNode(), completeNode, accumulator);
                }
            }
            else {
                var childKey = changePath.getFront();
                if (childKey == '.priority') {
                    util_1.assert(changePath.getLength() == 1, "Can't have a priority with additional path components");
                    var oldEventNode = oldEventSnap.getNode();
                    serverNode = viewCache.getServerCache().getNode();
                    // we might have overwrites for this priority
                    var updatedPriority = writesCache.calcEventCacheAfterServerOverwrite(changePath, oldEventNode, serverNode);
                    if (updatedPriority != null) {
                        newEventCache = this.filter_.updatePriority(oldEventNode, updatedPriority);
                    }
                    else {
                        // priority didn't change, keep old node
                        newEventCache = oldEventSnap.getNode();
                    }
                }
                else {
                    var childChangePath = changePath.popFront();
                    // update child
                    var newEventChild = void 0;
                    if (oldEventSnap.isCompleteForChild(childKey)) {
                        serverNode = viewCache.getServerCache().getNode();
                        var eventChildUpdate = writesCache.calcEventCacheAfterServerOverwrite(changePath, oldEventSnap.getNode(), serverNode);
                        if (eventChildUpdate != null) {
                            newEventChild = oldEventSnap
                                .getNode()
                                .getImmediateChild(childKey)
                                .updateChild(childChangePath, eventChildUpdate);
                        }
                        else {
                            // Nothing changed, just keep the old child
                            newEventChild = oldEventSnap
                                .getNode()
                                .getImmediateChild(childKey);
                        }
                    }
                    else {
                        newEventChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());
                    }
                    if (newEventChild != null) {
                        newEventCache = this.filter_.updateChild(oldEventSnap.getNode(), childKey, newEventChild, childChangePath, source, accumulator);
                    }
                    else {
                        // no complete child available or no change
                        newEventCache = oldEventSnap.getNode();
                    }
                }
            }
            return viewCache.updateEventSnap(newEventCache, oldEventSnap.isFullyInitialized() || changePath.isEmpty(), this.filter_.filtersNodes());
        }
    };
    /**
     * @param {!ViewCache} oldViewCache
     * @param {!Path} changePath
     * @param {!Node} changedSnap
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} completeCache
     * @param {boolean} filterServerNode
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.applyServerOverwrite_ = function (oldViewCache, changePath, changedSnap, writesCache, completeCache, filterServerNode, accumulator) {
        var oldServerSnap = oldViewCache.getServerCache();
        var newServerCache;
        var serverFilter = filterServerNode
            ? this.filter_
            : this.filter_.getIndexedFilter();
        if (changePath.isEmpty()) {
            newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), changedSnap, null);
        }
        else if (serverFilter.filtersNodes() && !oldServerSnap.isFiltered()) {
            // we want to filter the server node, but we didn't filter the server node yet, so simulate a full update
            var newServerNode = oldServerSnap
                .getNode()
                .updateChild(changePath, changedSnap);
            newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), newServerNode, null);
        }
        else {
            var childKey = changePath.getFront();
            if (!oldServerSnap.isCompleteForPath(changePath) &&
                changePath.getLength() > 1) {
                // We don't update incomplete nodes with updates intended for other listeners
                return oldViewCache;
            }
            var childChangePath = changePath.popFront();
            var childNode = oldServerSnap.getNode().getImmediateChild(childKey);
            var newChildNode = childNode.updateChild(childChangePath, changedSnap);
            if (childKey == '.priority') {
                newServerCache = serverFilter.updatePriority(oldServerSnap.getNode(), newChildNode);
            }
            else {
                newServerCache = serverFilter.updateChild(oldServerSnap.getNode(), childKey, newChildNode, childChangePath, CompleteChildSource_1.NO_COMPLETE_CHILD_SOURCE, null);
            }
        }
        var newViewCache = oldViewCache.updateServerSnap(newServerCache, oldServerSnap.isFullyInitialized() || changePath.isEmpty(), serverFilter.filtersNodes());
        var source = new CompleteChildSource_1.WriteTreeCompleteChildSource(writesCache, newViewCache, completeCache);
        return this.generateEventCacheAfterServerEvent_(newViewCache, changePath, writesCache, source, accumulator);
    };
    /**
     * @param {!ViewCache} oldViewCache
     * @param {!Path} changePath
     * @param {!Node} changedSnap
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} completeCache
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.applyUserOverwrite_ = function (oldViewCache, changePath, changedSnap, writesCache, completeCache, accumulator) {
        var oldEventSnap = oldViewCache.getEventCache();
        var newViewCache, newEventCache;
        var source = new CompleteChildSource_1.WriteTreeCompleteChildSource(writesCache, oldViewCache, completeCache);
        if (changePath.isEmpty()) {
            newEventCache = this.filter_.updateFullNode(oldViewCache.getEventCache().getNode(), changedSnap, accumulator);
            newViewCache = oldViewCache.updateEventSnap(newEventCache, true, this.filter_.filtersNodes());
        }
        else {
            var childKey = changePath.getFront();
            if (childKey === '.priority') {
                newEventCache = this.filter_.updatePriority(oldViewCache.getEventCache().getNode(), changedSnap);
                newViewCache = oldViewCache.updateEventSnap(newEventCache, oldEventSnap.isFullyInitialized(), oldEventSnap.isFiltered());
            }
            else {
                var childChangePath = changePath.popFront();
                var oldChild = oldEventSnap.getNode().getImmediateChild(childKey);
                var newChild = void 0;
                if (childChangePath.isEmpty()) {
                    // Child overwrite, we can replace the child
                    newChild = changedSnap;
                }
                else {
                    var childNode = source.getCompleteChild(childKey);
                    if (childNode != null) {
                        if (childChangePath.getBack() === '.priority' &&
                            childNode.getChild(childChangePath.parent()).isEmpty()) {
                            // This is a priority update on an empty node. If this node exists on the server, the
                            // server will send down the priority in the update, so ignore for now
                            newChild = childNode;
                        }
                        else {
                            newChild = childNode.updateChild(childChangePath, changedSnap);
                        }
                    }
                    else {
                        // There is no complete child node available
                        newChild = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
                    }
                }
                if (!oldChild.equals(newChild)) {
                    var newEventSnap = this.filter_.updateChild(oldEventSnap.getNode(), childKey, newChild, childChangePath, source, accumulator);
                    newViewCache = oldViewCache.updateEventSnap(newEventSnap, oldEventSnap.isFullyInitialized(), this.filter_.filtersNodes());
                }
                else {
                    newViewCache = oldViewCache;
                }
            }
        }
        return newViewCache;
    };
    /**
     * @param {!ViewCache} viewCache
     * @param {string} childKey
     * @return {boolean}
     * @private
     */
    ViewProcessor.cacheHasChild_ = function (viewCache, childKey) {
        return viewCache.getEventCache().isCompleteForChild(childKey);
    };
    /**
     * @param {!ViewCache} viewCache
     * @param {!Path} path
     * @param {ImmutableTree.<!Node>} changedChildren
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} serverCache
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.applyUserMerge_ = function (viewCache, path, changedChildren, writesCache, serverCache, accumulator) {
        var _this = this;
        // HACK: In the case of a limit query, there may be some changes that bump things out of the
        // window leaving room for new items.  It's important we process these changes first, so we
        // iterate the changes twice, first processing any that affect items currently in view.
        // TODO: I consider an item "in view" if cacheHasChild is true, which checks both the server
        // and event snap.  I'm not sure if this will result in edge cases when a child is in one but
        // not the other.
        var curViewCache = viewCache;
        changedChildren.foreach(function (relativePath, childNode) {
            var writePath = path.child(relativePath);
            if (ViewProcessor.cacheHasChild_(viewCache, writePath.getFront())) {
                curViewCache = _this.applyUserOverwrite_(curViewCache, writePath, childNode, writesCache, serverCache, accumulator);
            }
        });
        changedChildren.foreach(function (relativePath, childNode) {
            var writePath = path.child(relativePath);
            if (!ViewProcessor.cacheHasChild_(viewCache, writePath.getFront())) {
                curViewCache = _this.applyUserOverwrite_(curViewCache, writePath, childNode, writesCache, serverCache, accumulator);
            }
        });
        return curViewCache;
    };
    /**
     * @param {!Node} node
     * @param {ImmutableTree.<!Node>} merge
     * @return {!Node}
     * @private
     */
    ViewProcessor.prototype.applyMerge_ = function (node, merge) {
        merge.foreach(function (relativePath, childNode) {
            node = node.updateChild(relativePath, childNode);
        });
        return node;
    };
    /**
     * @param {!ViewCache} viewCache
     * @param {!Path} path
     * @param {!ImmutableTree.<!Node>} changedChildren
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} serverCache
     * @param {boolean} filterServerNode
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.applyServerMerge_ = function (viewCache, path, changedChildren, writesCache, serverCache, filterServerNode, accumulator) {
        var _this = this;
        // If we don't have a cache yet, this merge was intended for a previously listen in the same location. Ignore it and
        // wait for the complete data update coming soon.
        if (viewCache
            .getServerCache()
            .getNode()
            .isEmpty() &&
            !viewCache.getServerCache().isFullyInitialized()) {
            return viewCache;
        }
        // HACK: In the case of a limit query, there may be some changes that bump things out of the
        // window leaving room for new items.  It's important we process these changes first, so we
        // iterate the changes twice, first processing any that affect items currently in view.
        // TODO: I consider an item "in view" if cacheHasChild is true, which checks both the server
        // and event snap.  I'm not sure if this will result in edge cases when a child is in one but
        // not the other.
        var curViewCache = viewCache;
        var viewMergeTree;
        if (path.isEmpty()) {
            viewMergeTree = changedChildren;
        }
        else {
            viewMergeTree = ImmutableTree_1.ImmutableTree.Empty.setTree(path, changedChildren);
        }
        var serverNode = viewCache.getServerCache().getNode();
        viewMergeTree.children.inorderTraversal(function (childKey, childTree) {
            if (serverNode.hasChild(childKey)) {
                var serverChild = viewCache
                    .getServerCache()
                    .getNode()
                    .getImmediateChild(childKey);
                var newChild = _this.applyMerge_(serverChild, childTree);
                curViewCache = _this.applyServerOverwrite_(curViewCache, new Path_1.Path(childKey), newChild, writesCache, serverCache, filterServerNode, accumulator);
            }
        });
        viewMergeTree.children.inorderTraversal(function (childKey, childMergeTree) {
            var isUnknownDeepMerge = !viewCache.getServerCache().isCompleteForChild(childKey) &&
                childMergeTree.value == null;
            if (!serverNode.hasChild(childKey) && !isUnknownDeepMerge) {
                var serverChild = viewCache
                    .getServerCache()
                    .getNode()
                    .getImmediateChild(childKey);
                var newChild = _this.applyMerge_(serverChild, childMergeTree);
                curViewCache = _this.applyServerOverwrite_(curViewCache, new Path_1.Path(childKey), newChild, writesCache, serverCache, filterServerNode, accumulator);
            }
        });
        return curViewCache;
    };
    /**
     * @param {!ViewCache} viewCache
     * @param {!Path} ackPath
     * @param {!ImmutableTree<!boolean>} affectedTree
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} completeCache
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.ackUserWrite_ = function (viewCache, ackPath, affectedTree, writesCache, completeCache, accumulator) {
        if (writesCache.shadowingWrite(ackPath) != null) {
            return viewCache;
        }
        // Only filter server node if it is currently filtered
        var filterServerNode = viewCache.getServerCache().isFiltered();
        // Essentially we'll just get our existing server cache for the affected paths and re-apply it as a server update
        // now that it won't be shadowed.
        var serverCache = viewCache.getServerCache();
        if (affectedTree.value != null) {
            // This is an overwrite.
            if ((ackPath.isEmpty() && serverCache.isFullyInitialized()) ||
                serverCache.isCompleteForPath(ackPath)) {
                return this.applyServerOverwrite_(viewCache, ackPath, serverCache.getNode().getChild(ackPath), writesCache, completeCache, filterServerNode, accumulator);
            }
            else if (ackPath.isEmpty()) {
                // This is a goofy edge case where we are acking data at this location but don't have full data.  We
                // should just re-apply whatever we have in our cache as a merge.
                var changedChildren_1 = ImmutableTree_1.ImmutableTree.Empty;
                serverCache.getNode().forEachChild(KeyIndex_1.KEY_INDEX, function (name, node) {
                    changedChildren_1 = changedChildren_1.set(new Path_1.Path(name), node);
                });
                return this.applyServerMerge_(viewCache, ackPath, changedChildren_1, writesCache, completeCache, filterServerNode, accumulator);
            }
            else {
                return viewCache;
            }
        }
        else {
            // This is a merge.
            var changedChildren_2 = ImmutableTree_1.ImmutableTree.Empty;
            affectedTree.foreach(function (mergePath, value) {
                var serverCachePath = ackPath.child(mergePath);
                if (serverCache.isCompleteForPath(serverCachePath)) {
                    changedChildren_2 = changedChildren_2.set(mergePath, serverCache.getNode().getChild(serverCachePath));
                }
            });
            return this.applyServerMerge_(viewCache, ackPath, changedChildren_2, writesCache, completeCache, filterServerNode, accumulator);
        }
    };
    /**
     * @param {!ViewCache} viewCache
     * @param {!Path} path
     * @param {!WriteTreeRef} writesCache
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.listenComplete_ = function (viewCache, path, writesCache, accumulator) {
        var oldServerNode = viewCache.getServerCache();
        var newViewCache = viewCache.updateServerSnap(oldServerNode.getNode(), oldServerNode.isFullyInitialized() || path.isEmpty(), oldServerNode.isFiltered());
        return this.generateEventCacheAfterServerEvent_(newViewCache, path, writesCache, CompleteChildSource_1.NO_COMPLETE_CHILD_SOURCE, accumulator);
    };
    /**
     * @param {!ViewCache} viewCache
     * @param {!Path} path
     * @param {!WriteTreeRef} writesCache
     * @param {?Node} completeServerCache
     * @param {!ChildChangeAccumulator} accumulator
     * @return {!ViewCache}
     * @private
     */
    ViewProcessor.prototype.revertUserWrite_ = function (viewCache, path, writesCache, completeServerCache, accumulator) {
        var complete;
        if (writesCache.shadowingWrite(path) != null) {
            return viewCache;
        }
        else {
            var source = new CompleteChildSource_1.WriteTreeCompleteChildSource(writesCache, viewCache, completeServerCache);
            var oldEventCache = viewCache.getEventCache().getNode();
            var newEventCache = void 0;
            if (path.isEmpty() || path.getFront() === '.priority') {
                var newNode = void 0;
                if (viewCache.getServerCache().isFullyInitialized()) {
                    newNode = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());
                }
                else {
                    var serverChildren = viewCache.getServerCache().getNode();
                    util_1.assert(serverChildren instanceof ChildrenNode_1.ChildrenNode, 'serverChildren would be complete if leaf node');
                    newNode = writesCache.calcCompleteEventChildren(serverChildren);
                }
                newNode = newNode;
                newEventCache = this.filter_.updateFullNode(oldEventCache, newNode, accumulator);
            }
            else {
                var childKey = path.getFront();
                var newChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());
                if (newChild == null &&
                    viewCache.getServerCache().isCompleteForChild(childKey)) {
                    newChild = oldEventCache.getImmediateChild(childKey);
                }
                if (newChild != null) {
                    newEventCache = this.filter_.updateChild(oldEventCache, childKey, newChild, path.popFront(), source, accumulator);
                }
                else if (viewCache
                    .getEventCache()
                    .getNode()
                    .hasChild(childKey)) {
                    // No complete child available, delete the existing one, if any
                    newEventCache = this.filter_.updateChild(oldEventCache, childKey, ChildrenNode_1.ChildrenNode.EMPTY_NODE, path.popFront(), source, accumulator);
                }
                else {
                    newEventCache = oldEventCache;
                }
                if (newEventCache.isEmpty() &&
                    viewCache.getServerCache().isFullyInitialized()) {
                    // We might have reverted all child writes. Maybe the old event was a leaf node
                    complete = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());
                    if (complete.isLeafNode()) {
                        newEventCache = this.filter_.updateFullNode(newEventCache, complete, accumulator);
                    }
                }
            }
            complete =
                viewCache.getServerCache().isFullyInitialized() ||
                    writesCache.shadowingWrite(Path_1.Path.Empty) != null;
            return viewCache.updateEventSnap(newEventCache, complete, this.filter_.filtersNodes());
        }
    };
    return ViewProcessor;
}());
exports.ViewProcessor = ViewProcessor;



},{"../operation/Operation":30,"../snap/ChildrenNode":32,"../snap/indexes/KeyIndex":39,"../util/ImmutableTree":54,"../util/Path":57,"./Change":66,"./ChildChangeAccumulator":67,"./CompleteChildSource":68,"@firebase/util":92}],77:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@firebase/util");
var Change_1 = require("../Change");
var ChildrenNode_1 = require("../../snap/ChildrenNode");
var PriorityIndex_1 = require("../../snap/indexes/PriorityIndex");
/**
 * Doesn't really filter nodes but applies an index to the node and keeps track of any changes
 *
 * @constructor
 * @implements {NodeFilter}
 * @param {!Index} index
 */
var IndexedFilter = /** @class */ (function () {
    function IndexedFilter(index_) {
        this.index_ = index_;
    }
    IndexedFilter.prototype.updateChild = function (snap, key, newChild, affectedPath, source, optChangeAccumulator) {
        util_1.assert(snap.isIndexed(this.index_), 'A node must be indexed if only a child is updated');
        var oldChild = snap.getImmediateChild(key);
        // Check if anything actually changed.
        if (oldChild.getChild(affectedPath).equals(newChild.getChild(affectedPath))) {
            // There's an edge case where a child can enter or leave the view because affectedPath was set to null.
            // In this case, affectedPath will appear null in both the old and new snapshots.  So we need
            // to avoid treating these cases as "nothing changed."
            if (oldChild.isEmpty() == newChild.isEmpty()) {
                // Nothing changed.
                // This assert should be valid, but it's expensive (can dominate perf testing) so don't actually do it.
                //assert(oldChild.equals(newChild), 'Old and new snapshots should be equal.');
                return snap;
            }
        }
        if (optChangeAccumulator != null) {
            if (newChild.isEmpty()) {
                if (snap.hasChild(key)) {
                    optChangeAccumulator.trackChildChange(Change_1.Change.childRemovedChange(key, oldChild));
                }
                else {
                    util_1.assert(snap.isLeafNode(), 'A child remove without an old child only makes sense on a leaf node');
                }
            }
            else if (oldChild.isEmpty()) {
                optChangeAccumulator.trackChildChange(Change_1.Change.childAddedChange(key, newChild));
            }
            else {
                optChangeAccumulator.trackChildChange(Change_1.Change.childChangedChange(key, newChild, oldChild));
            }
        }
        if (snap.isLeafNode() && newChild.isEmpty()) {
            return snap;
        }
        else {
            // Make sure the node is indexed
            return snap.updateImmediateChild(key, newChild).withIndex(this.index_);
        }
    };
    /**
     * @inheritDoc
     */
    IndexedFilter.prototype.updateFullNode = function (oldSnap, newSnap, optChangeAccumulator) {
        if (optChangeAccumulator != null) {
            if (!oldSnap.isLeafNode()) {
                oldSnap.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (key, childNode) {
                    if (!newSnap.hasChild(key)) {
                        optChangeAccumulator.trackChildChange(Change_1.Change.childRemovedChange(key, childNode));
                    }
                });
            }
            if (!newSnap.isLeafNode()) {
                newSnap.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (key, childNode) {
                    if (oldSnap.hasChild(key)) {
                        var oldChild = oldSnap.getImmediateChild(key);
                        if (!oldChild.equals(childNode)) {
                            optChangeAccumulator.trackChildChange(Change_1.Change.childChangedChange(key, childNode, oldChild));
                        }
                    }
                    else {
                        optChangeAccumulator.trackChildChange(Change_1.Change.childAddedChange(key, childNode));
                    }
                });
            }
        }
        return newSnap.withIndex(this.index_);
    };
    /**
     * @inheritDoc
     */
    IndexedFilter.prototype.updatePriority = function (oldSnap, newPriority) {
        if (oldSnap.isEmpty()) {
            return ChildrenNode_1.ChildrenNode.EMPTY_NODE;
        }
        else {
            return oldSnap.updatePriority(newPriority);
        }
    };
    /**
     * @inheritDoc
     */
    IndexedFilter.prototype.filtersNodes = function () {
        return false;
    };
    /**
     * @inheritDoc
     */
    IndexedFilter.prototype.getIndexedFilter = function () {
        return this;
    };
    /**
     * @inheritDoc
     */
    IndexedFilter.prototype.getIndex = function () {
        return this.index_;
    };
    return IndexedFilter;
}());
exports.IndexedFilter = IndexedFilter;



},{"../../snap/ChildrenNode":32,"../../snap/indexes/PriorityIndex":41,"../Change":66,"@firebase/util":92}],78:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var RangedFilter_1 = require("./RangedFilter");
var ChildrenNode_1 = require("../../snap/ChildrenNode");
var Node_1 = require("../../snap/Node");
var util_1 = require("@firebase/util");
var Change_1 = require("../Change");
/**
 * Applies a limit and a range to a node and uses RangedFilter to do the heavy lifting where possible
 *
 * @constructor
 * @implements {NodeFilter}
 */
var LimitedFilter = /** @class */ (function () {
    /**
     * @param {!QueryParams} params
     */
    function LimitedFilter(params) {
        this.rangedFilter_ = new RangedFilter_1.RangedFilter(params);
        this.index_ = params.getIndex();
        this.limit_ = params.getLimit();
        this.reverse_ = !params.isViewFromLeft();
    }
    /**
     * @inheritDoc
     */
    LimitedFilter.prototype.updateChild = function (snap, key, newChild, affectedPath, source, optChangeAccumulator) {
        if (!this.rangedFilter_.matches(new Node_1.NamedNode(key, newChild))) {
            newChild = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
        }
        if (snap.getImmediateChild(key).equals(newChild)) {
            // No change
            return snap;
        }
        else if (snap.numChildren() < this.limit_) {
            return this.rangedFilter_
                .getIndexedFilter()
                .updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator);
        }
        else {
            return this.fullLimitUpdateChild_(snap, key, newChild, source, optChangeAccumulator);
        }
    };
    /**
     * @inheritDoc
     */
    LimitedFilter.prototype.updateFullNode = function (oldSnap, newSnap, optChangeAccumulator) {
        var filtered;
        if (newSnap.isLeafNode() || newSnap.isEmpty()) {
            // Make sure we have a children node with the correct index, not a leaf node;
            filtered = ChildrenNode_1.ChildrenNode.EMPTY_NODE.withIndex(this.index_);
        }
        else {
            if (this.limit_ * 2 < newSnap.numChildren() &&
                newSnap.isIndexed(this.index_)) {
                // Easier to build up a snapshot, since what we're given has more than twice the elements we want
                filtered = ChildrenNode_1.ChildrenNode.EMPTY_NODE.withIndex(this.index_);
                // anchor to the startPost, endPost, or last element as appropriate
                var iterator = void 0;
                if (this.reverse_) {
                    iterator = newSnap.getReverseIteratorFrom(this.rangedFilter_.getEndPost(), this.index_);
                }
                else {
                    iterator = newSnap.getIteratorFrom(this.rangedFilter_.getStartPost(), this.index_);
                }
                var count = 0;
                while (iterator.hasNext() && count < this.limit_) {
                    var next = iterator.getNext();
                    var inRange = void 0;
                    if (this.reverse_) {
                        inRange =
                            this.index_.compare(this.rangedFilter_.getStartPost(), next) <= 0;
                    }
                    else {
                        inRange =
                            this.index_.compare(next, this.rangedFilter_.getEndPost()) <= 0;
                    }
                    if (inRange) {
                        filtered = filtered.updateImmediateChild(next.name, next.node);
                        count++;
                    }
                    else {
                        // if we have reached the end post, we cannot keep adding elemments
                        break;
                    }
                }
            }
            else {
                // The snap contains less than twice the limit. Faster to delete from the snap than build up a new one
                filtered = newSnap.withIndex(this.index_);
                // Don't support priorities on queries
                filtered = filtered.updatePriority(ChildrenNode_1.ChildrenNode.EMPTY_NODE);
                var startPost = void 0;
                var endPost = void 0;
                var cmp = void 0;
                var iterator = void 0;
                if (this.reverse_) {
                    iterator = filtered.getReverseIterator(this.index_);
                    startPost = this.rangedFilter_.getEndPost();
                    endPost = this.rangedFilter_.getStartPost();
                    var indexCompare_1 = this.index_.getCompare();
                    cmp = function (a, b) { return indexCompare_1(b, a); };
                }
                else {
                    iterator = filtered.getIterator(this.index_);
                    startPost = this.rangedFilter_.getStartPost();
                    endPost = this.rangedFilter_.getEndPost();
                    cmp = this.index_.getCompare();
                }
                var count = 0;
                var foundStartPost = false;
                while (iterator.hasNext()) {
                    var next = iterator.getNext();
                    if (!foundStartPost && cmp(startPost, next) <= 0) {
                        // start adding
                        foundStartPost = true;
                    }
                    var inRange = foundStartPost && count < this.limit_ && cmp(next, endPost) <= 0;
                    if (inRange) {
                        count++;
                    }
                    else {
                        filtered = filtered.updateImmediateChild(next.name, ChildrenNode_1.ChildrenNode.EMPTY_NODE);
                    }
                }
            }
        }
        return this.rangedFilter_
            .getIndexedFilter()
            .updateFullNode(oldSnap, filtered, optChangeAccumulator);
    };
    /**
     * @inheritDoc
     */
    LimitedFilter.prototype.updatePriority = function (oldSnap, newPriority) {
        // Don't support priorities on queries
        return oldSnap;
    };
    /**
     * @inheritDoc
     */
    LimitedFilter.prototype.filtersNodes = function () {
        return true;
    };
    /**
     * @inheritDoc
     */
    LimitedFilter.prototype.getIndexedFilter = function () {
        return this.rangedFilter_.getIndexedFilter();
    };
    /**
     * @inheritDoc
     */
    LimitedFilter.prototype.getIndex = function () {
        return this.index_;
    };
    /**
     * @param {!Node} snap
     * @param {string} childKey
     * @param {!Node} childSnap
     * @param {!CompleteChildSource} source
     * @param {?ChildChangeAccumulator} changeAccumulator
     * @return {!Node}
     * @private
     */
    LimitedFilter.prototype.fullLimitUpdateChild_ = function (snap, childKey, childSnap, source, changeAccumulator) {
        // TODO: rename all cache stuff etc to general snap terminology
        var cmp;
        if (this.reverse_) {
            var indexCmp_1 = this.index_.getCompare();
            cmp = function (a, b) { return indexCmp_1(b, a); };
        }
        else {
            cmp = this.index_.getCompare();
        }
        var oldEventCache = snap;
        util_1.assert(oldEventCache.numChildren() == this.limit_, '');
        var newChildNamedNode = new Node_1.NamedNode(childKey, childSnap);
        var windowBoundary = this.reverse_
            ? oldEventCache.getFirstChild(this.index_)
            : oldEventCache.getLastChild(this.index_);
        var inRange = this.rangedFilter_.matches(newChildNamedNode);
        if (oldEventCache.hasChild(childKey)) {
            var oldChildSnap = oldEventCache.getImmediateChild(childKey);
            var nextChild = source.getChildAfterChild(this.index_, windowBoundary, this.reverse_);
            while (nextChild != null &&
                (nextChild.name == childKey || oldEventCache.hasChild(nextChild.name))) {
                // There is a weird edge case where a node is updated as part of a merge in the write tree, but hasn't
                // been applied to the limited filter yet. Ignore this next child which will be updated later in
                // the limited filter...
                nextChild = source.getChildAfterChild(this.index_, nextChild, this.reverse_);
            }
            var compareNext = nextChild == null ? 1 : cmp(nextChild, newChildNamedNode);
            var remainsInWindow = inRange && !childSnap.isEmpty() && compareNext >= 0;
            if (remainsInWindow) {
                if (changeAccumulator != null) {
                    changeAccumulator.trackChildChange(Change_1.Change.childChangedChange(childKey, childSnap, oldChildSnap));
                }
                return oldEventCache.updateImmediateChild(childKey, childSnap);
            }
            else {
                if (changeAccumulator != null) {
                    changeAccumulator.trackChildChange(Change_1.Change.childRemovedChange(childKey, oldChildSnap));
                }
                var newEventCache = oldEventCache.updateImmediateChild(childKey, ChildrenNode_1.ChildrenNode.EMPTY_NODE);
                var nextChildInRange = nextChild != null && this.rangedFilter_.matches(nextChild);
                if (nextChildInRange) {
                    if (changeAccumulator != null) {
                        changeAccumulator.trackChildChange(Change_1.Change.childAddedChange(nextChild.name, nextChild.node));
                    }
                    return newEventCache.updateImmediateChild(nextChild.name, nextChild.node);
                }
                else {
                    return newEventCache;
                }
            }
        }
        else if (childSnap.isEmpty()) {
            // we're deleting a node, but it was not in the window, so ignore it
            return snap;
        }
        else if (inRange) {
            if (cmp(windowBoundary, newChildNamedNode) >= 0) {
                if (changeAccumulator != null) {
                    changeAccumulator.trackChildChange(Change_1.Change.childRemovedChange(windowBoundary.name, windowBoundary.node));
                    changeAccumulator.trackChildChange(Change_1.Change.childAddedChange(childKey, childSnap));
                }
                return oldEventCache
                    .updateImmediateChild(childKey, childSnap)
                    .updateImmediateChild(windowBoundary.name, ChildrenNode_1.ChildrenNode.EMPTY_NODE);
            }
            else {
                return snap;
            }
        }
        else {
            return snap;
        }
    };
    return LimitedFilter;
}());
exports.LimitedFilter = LimitedFilter;



},{"../../snap/ChildrenNode":32,"../../snap/Node":35,"../Change":66,"./RangedFilter":79,"@firebase/util":92}],79:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var IndexedFilter_1 = require("./IndexedFilter");
var PriorityIndex_1 = require("../../snap/indexes/PriorityIndex");
var Node_1 = require("../../../core/snap/Node");
var ChildrenNode_1 = require("../../snap/ChildrenNode");
/**
 * Filters nodes by range and uses an IndexFilter to track any changes after filtering the node
 *
 * @constructor
 * @implements {NodeFilter}
 */
var RangedFilter = /** @class */ (function () {
    /**
     * @param {!QueryParams} params
     */
    function RangedFilter(params) {
        this.indexedFilter_ = new IndexedFilter_1.IndexedFilter(params.getIndex());
        this.index_ = params.getIndex();
        this.startPost_ = RangedFilter.getStartPost_(params);
        this.endPost_ = RangedFilter.getEndPost_(params);
    }
    /**
     * @return {!NamedNode}
     */
    RangedFilter.prototype.getStartPost = function () {
        return this.startPost_;
    };
    /**
     * @return {!NamedNode}
     */
    RangedFilter.prototype.getEndPost = function () {
        return this.endPost_;
    };
    /**
     * @param {!NamedNode} node
     * @return {boolean}
     */
    RangedFilter.prototype.matches = function (node) {
        return (this.index_.compare(this.getStartPost(), node) <= 0 &&
            this.index_.compare(node, this.getEndPost()) <= 0);
    };
    /**
     * @inheritDoc
     */
    RangedFilter.prototype.updateChild = function (snap, key, newChild, affectedPath, source, optChangeAccumulator) {
        if (!this.matches(new Node_1.NamedNode(key, newChild))) {
            newChild = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
        }
        return this.indexedFilter_.updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator);
    };
    /**
     * @inheritDoc
     */
    RangedFilter.prototype.updateFullNode = function (oldSnap, newSnap, optChangeAccumulator) {
        if (newSnap.isLeafNode()) {
            // Make sure we have a children node with the correct index, not a leaf node;
            newSnap = ChildrenNode_1.ChildrenNode.EMPTY_NODE;
        }
        var filtered = newSnap.withIndex(this.index_);
        // Don't support priorities on queries
        filtered = filtered.updatePriority(ChildrenNode_1.ChildrenNode.EMPTY_NODE);
        var self = this;
        newSnap.forEachChild(PriorityIndex_1.PRIORITY_INDEX, function (key, childNode) {
            if (!self.matches(new Node_1.NamedNode(key, childNode))) {
                filtered = filtered.updateImmediateChild(key, ChildrenNode_1.ChildrenNode.EMPTY_NODE);
            }
        });
        return this.indexedFilter_.updateFullNode(oldSnap, filtered, optChangeAccumulator);
    };
    /**
     * @inheritDoc
     */
    RangedFilter.prototype.updatePriority = function (oldSnap, newPriority) {
        // Don't support priorities on queries
        return oldSnap;
    };
    /**
     * @inheritDoc
     */
    RangedFilter.prototype.filtersNodes = function () {
        return true;
    };
    /**
     * @inheritDoc
     */
    RangedFilter.prototype.getIndexedFilter = function () {
        return this.indexedFilter_;
    };
    /**
     * @inheritDoc
     */
    RangedFilter.prototype.getIndex = function () {
        return this.index_;
    };
    /**
     * @param {!QueryParams} params
     * @return {!NamedNode}
     * @private
     */
    RangedFilter.getStartPost_ = function (params) {
        if (params.hasStart()) {
            var startName = params.getIndexStartName();
            return params.getIndex().makePost(params.getIndexStartValue(), startName);
        }
        else {
            return params.getIndex().minPost();
        }
    };
    /**
     * @param {!QueryParams} params
     * @return {!NamedNode}
     * @private
     */
    RangedFilter.getEndPost_ = function (params) {
        if (params.hasEnd()) {
            var endName = params.getIndexEndName();
            return params.getIndex().makePost(params.getIndexEndValue(), endName);
        }
        else {
            return params.getIndex().maxPost();
        }
    };
    return RangedFilter;
}());
exports.RangedFilter = RangedFilter;



},{"../../../core/snap/Node":35,"../../snap/ChildrenNode":32,"../../snap/indexes/PriorityIndex":41,"./IndexedFilter":77}],80:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("../core/util/util");
var CountedSet_1 = require("../core/util/CountedSet");
var StatsManager_1 = require("../core/stats/StatsManager");
var PacketReceiver_1 = require("./polling/PacketReceiver");
var Constants_1 = require("./Constants");
var util_2 = require("@firebase/util");
var util_3 = require("@firebase/util");
// URL query parameters associated with longpolling
exports.FIREBASE_LONGPOLL_START_PARAM = 'start';
exports.FIREBASE_LONGPOLL_CLOSE_COMMAND = 'close';
exports.FIREBASE_LONGPOLL_COMMAND_CB_NAME = 'pLPCommand';
exports.FIREBASE_LONGPOLL_DATA_CB_NAME = 'pRTLPCB';
exports.FIREBASE_LONGPOLL_ID_PARAM = 'id';
exports.FIREBASE_LONGPOLL_PW_PARAM = 'pw';
exports.FIREBASE_LONGPOLL_SERIAL_PARAM = 'ser';
exports.FIREBASE_LONGPOLL_CALLBACK_ID_PARAM = 'cb';
exports.FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM = 'seg';
exports.FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET = 'ts';
exports.FIREBASE_LONGPOLL_DATA_PARAM = 'd';
exports.FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM = 'disconn';
exports.FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM = 'dframe';
//Data size constants.
//TODO: Perf: the maximum length actually differs from browser to browser.
// We should check what browser we're on and set accordingly.
var MAX_URL_DATA_SIZE = 1870;
var SEG_HEADER_SIZE = 30; //ie: &seg=8299234&ts=982389123&d=
var MAX_PAYLOAD_SIZE = MAX_URL_DATA_SIZE - SEG_HEADER_SIZE;
/**
 * Keepalive period
 * send a fresh request at minimum every 25 seconds. Opera has a maximum request
 * length of 30 seconds that we can't exceed.
 * @const
 * @type {number}
 */
var KEEPALIVE_REQUEST_INTERVAL = 25000;
/**
 * How long to wait before aborting a long-polling connection attempt.
 * @const
 * @type {number}
 */
var LP_CONNECT_TIMEOUT = 30000;
/**
 * This class manages a single long-polling connection.
 *
 * @constructor
 * @implements {Transport}
 */
var BrowserPollConnection = /** @class */ (function () {
    /**
     * @param {string} connId An identifier for this connection, used for logging
     * @param {RepoInfo} repoInfo The info for the endpoint to send data to.
     * @param {string=} transportSessionId Optional transportSessionid if we are reconnecting for an existing
     *                                         transport session
     * @param {string=}  lastSessionId Optional lastSessionId if the PersistentConnection has already created a
     *                                     connection previously
     */
    function BrowserPollConnection(connId, repoInfo, transportSessionId, lastSessionId) {
        this.connId = connId;
        this.repoInfo = repoInfo;
        this.transportSessionId = transportSessionId;
        this.lastSessionId = lastSessionId;
        this.bytesSent = 0;
        this.bytesReceived = 0;
        this.everConnected_ = false;
        this.log_ = util_1.logWrapper(connId);
        this.stats_ = StatsManager_1.StatsManager.getCollection(repoInfo);
        this.urlFn = function (params) {
            return repoInfo.connectionURL(Constants_1.LONG_POLLING, params);
        };
    }
    /**
     *
     * @param {function(Object)} onMessage Callback when messages arrive
     * @param {function()} onDisconnect Callback with connection lost.
     */
    BrowserPollConnection.prototype.open = function (onMessage, onDisconnect) {
        var _this = this;
        this.curSegmentNum = 0;
        this.onDisconnect_ = onDisconnect;
        this.myPacketOrderer = new PacketReceiver_1.PacketReceiver(onMessage);
        this.isClosed_ = false;
        this.connectTimeoutTimer_ = setTimeout(function () {
            _this.log_('Timed out trying to connect.');
            // Make sure we clear the host cache
            _this.onClosed_();
            _this.connectTimeoutTimer_ = null;
        }, Math.floor(LP_CONNECT_TIMEOUT));
        // Ensure we delay the creation of the iframe until the DOM is loaded.
        util_1.executeWhenDOMReady(function () {
            if (_this.isClosed_)
                return;
            //Set up a callback that gets triggered once a connection is set up.
            _this.scriptTagHolder = new FirebaseIFrameScriptHolder(function () {
                var args = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    args[_i] = arguments[_i];
                }
                var command = args[0], arg1 = args[1], arg2 = args[2], arg3 = args[3], arg4 = args[4];
                _this.incrementIncomingBytes_(args);
                if (!_this.scriptTagHolder)
                    return; // we closed the connection.
                if (_this.connectTimeoutTimer_) {
                    clearTimeout(_this.connectTimeoutTimer_);
                    _this.connectTimeoutTimer_ = null;
                }
                _this.everConnected_ = true;
                if (command == exports.FIREBASE_LONGPOLL_START_PARAM) {
                    _this.id = arg1;
                    _this.password = arg2;
                }
                else if (command === exports.FIREBASE_LONGPOLL_CLOSE_COMMAND) {
                    // Don't clear the host cache. We got a response from the server, so we know it's reachable
                    if (arg1) {
                        // We aren't expecting any more data (other than what the server's already in the process of sending us
                        // through our already open polls), so don't send any more.
                        _this.scriptTagHolder.sendNewPolls = false;
                        // arg1 in this case is the last response number sent by the server. We should try to receive
                        // all of the responses up to this one before closing
                        _this.myPacketOrderer.closeAfter(arg1, function () {
                            _this.onClosed_();
                        });
                    }
                    else {
                        _this.onClosed_();
                    }
                }
                else {
                    throw new Error('Unrecognized command received: ' + command);
                }
            }, function () {
                var args = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    args[_i] = arguments[_i];
                }
                var pN = args[0], data = args[1];
                _this.incrementIncomingBytes_(args);
                _this.myPacketOrderer.handleResponse(pN, data);
            }, function () {
                _this.onClosed_();
            }, _this.urlFn);
            //Send the initial request to connect. The serial number is simply to keep the browser from pulling previous results
            //from cache.
            var urlParams = {};
            urlParams[exports.FIREBASE_LONGPOLL_START_PARAM] = 't';
            urlParams[exports.FIREBASE_LONGPOLL_SERIAL_PARAM] = Math.floor(Math.random() * 100000000);
            if (_this.scriptTagHolder.uniqueCallbackIdentifier)
                urlParams[exports.FIREBASE_LONGPOLL_CALLBACK_ID_PARAM] = _this.scriptTagHolder.uniqueCallbackIdentifier;
            urlParams[Constants_1.VERSION_PARAM] = Constants_1.PROTOCOL_VERSION;
            if (_this.transportSessionId) {
                urlParams[Constants_1.TRANSPORT_SESSION_PARAM] = _this.transportSessionId;
            }
            if (_this.lastSessionId) {
                urlParams[Constants_1.LAST_SESSION_PARAM] = _this.lastSessionId;
            }
            if (!util_3.isNodeSdk() &&
                typeof location !== 'undefined' &&
                location.href &&
                location.href.indexOf(Constants_1.FORGE_DOMAIN) !== -1) {
                urlParams[Constants_1.REFERER_PARAM] = Constants_1.FORGE_REF;
            }
            var connectURL = _this.urlFn(urlParams);
            _this.log_('Connecting via long-poll to ' + connectURL);
            _this.scriptTagHolder.addTag(connectURL, function () {
                /* do nothing */
            });
        });
    };
    /**
     * Call this when a handshake has completed successfully and we want to consider the connection established
     */
    BrowserPollConnection.prototype.start = function () {
        this.scriptTagHolder.startLongPoll(this.id, this.password);
        this.addDisconnectPingFrame(this.id, this.password);
    };
    /**
     * Forces long polling to be considered as a potential transport
     */
    BrowserPollConnection.forceAllow = function () {
        BrowserPollConnection.forceAllow_ = true;
    };
    /**
     * Forces longpolling to not be considered as a potential transport
     */
    BrowserPollConnection.forceDisallow = function () {
        BrowserPollConnection.forceDisallow_ = true;
    };
    // Static method, use string literal so it can be accessed in a generic way
    BrowserPollConnection.isAvailable = function () {
        // NOTE: In React-Native there's normally no 'document', but if you debug a React-Native app in
        // the Chrome debugger, 'document' is defined, but document.createElement is null (2015/06/08).
        return (BrowserPollConnection.forceAllow_ ||
            (!BrowserPollConnection.forceDisallow_ &&
                typeof document !== 'undefined' &&
                document.createElement != null &&
                !util_1.isChromeExtensionContentScript() &&
                !util_1.isWindowsStoreApp() &&
                !util_3.isNodeSdk()));
    };
    /**
     * No-op for polling
     */
    BrowserPollConnection.prototype.markConnectionHealthy = function () { };
    /**
     * Stops polling and cleans up the iframe
     * @private
     */
    BrowserPollConnection.prototype.shutdown_ = function () {
        this.isClosed_ = true;
        if (this.scriptTagHolder) {
            this.scriptTagHolder.close();
            this.scriptTagHolder = null;
        }
        //remove the disconnect frame, which will trigger an XHR call to the server to tell it we're leaving.
        if (this.myDisconnFrame) {
            document.body.removeChild(this.myDisconnFrame);
            this.myDisconnFrame = null;
        }
        if (this.connectTimeoutTimer_) {
            clearTimeout(this.connectTimeoutTimer_);
            this.connectTimeoutTimer_ = null;
        }
    };
    /**
     * Triggered when this transport is closed
     * @private
     */
    BrowserPollConnection.prototype.onClosed_ = function () {
        if (!this.isClosed_) {
            this.log_('Longpoll is closing itself');
            this.shutdown_();
            if (this.onDisconnect_) {
                this.onDisconnect_(this.everConnected_);
                this.onDisconnect_ = null;
            }
        }
    };
    /**
     * External-facing close handler. RealTime has requested we shut down. Kill our connection and tell the server
     * that we've left.
     */
    BrowserPollConnection.prototype.close = function () {
        if (!this.isClosed_) {
            this.log_('Longpoll is being closed.');
            this.shutdown_();
        }
    };
    /**
     * Send the JSON object down to the server. It will need to be stringified, base64 encoded, and then
     * broken into chunks (since URLs have a small maximum length).
     * @param {!Object} data The JSON data to transmit.
     */
    BrowserPollConnection.prototype.send = function (data) {
        var dataStr = util_2.stringify(data);
        this.bytesSent += dataStr.length;
        this.stats_.incrementCounter('bytes_sent', dataStr.length);
        //first, lets get the base64-encoded data
        var base64data = util_2.base64Encode(dataStr);
        //We can only fit a certain amount in each URL, so we need to split this request
        //up into multiple pieces if it doesn't fit in one request.
        var dataSegs = util_1.splitStringBySize(base64data, MAX_PAYLOAD_SIZE);
        //Enqueue each segment for transmission. We assign each chunk a sequential ID and a total number
        //of segments so that we can reassemble the packet on the server.
        for (var i = 0; i < dataSegs.length; i++) {
            this.scriptTagHolder.enqueueSegment(this.curSegmentNum, dataSegs.length, dataSegs[i]);
            this.curSegmentNum++;
        }
    };
    /**
     * This is how we notify the server that we're leaving.
     * We aren't able to send requests with DHTML on a window close event, but we can
     * trigger XHR requests in some browsers (everything but Opera basically).
     * @param {!string} id
     * @param {!string} pw
     */
    BrowserPollConnection.prototype.addDisconnectPingFrame = function (id, pw) {
        if (util_3.isNodeSdk())
            return;
        this.myDisconnFrame = document.createElement('iframe');
        var urlParams = {};
        urlParams[exports.FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM] = 't';
        urlParams[exports.FIREBASE_LONGPOLL_ID_PARAM] = id;
        urlParams[exports.FIREBASE_LONGPOLL_PW_PARAM] = pw;
        this.myDisconnFrame.src = this.urlFn(urlParams);
        this.myDisconnFrame.style.display = 'none';
        document.body.appendChild(this.myDisconnFrame);
    };
    /**
     * Used to track the bytes received by this client
     * @param {*} args
     * @private
     */
    BrowserPollConnection.prototype.incrementIncomingBytes_ = function (args) {
        // TODO: This is an annoying perf hit just to track the number of incoming bytes.  Maybe it should be opt-in.
        var bytesReceived = util_2.stringify(args).length;
        this.bytesReceived += bytesReceived;
        this.stats_.incrementCounter('bytes_received', bytesReceived);
    };
    return BrowserPollConnection;
}());
exports.BrowserPollConnection = BrowserPollConnection;
/*********************************************************************************************
 * A wrapper around an iframe that is used as a long-polling script holder.
 * @constructor
 *********************************************************************************************/
var FirebaseIFrameScriptHolder = /** @class */ (function () {
    /**
     * @param commandCB - The callback to be called when control commands are recevied from the server.
     * @param onMessageCB - The callback to be triggered when responses arrive from the server.
     * @param onDisconnect - The callback to be triggered when this tag holder is closed
     * @param urlFn - A function that provides the URL of the endpoint to send data to.
     */
    function FirebaseIFrameScriptHolder(commandCB, onMessageCB, onDisconnect, urlFn) {
        this.onDisconnect = onDisconnect;
        this.urlFn = urlFn;
        //We maintain a count of all of the outstanding requests, because if we have too many active at once it can cause
        //problems in some browsers.
        /**
         * @type {CountedSet.<number, number>}
         */
        this.outstandingRequests = new CountedSet_1.CountedSet();
        //A queue of the pending segments waiting for transmission to the server.
        this.pendingSegs = [];
        //A serial number. We use this for two things:
        // 1) A way to ensure the browser doesn't cache responses to polls
        // 2) A way to make the server aware when long-polls arrive in a different order than we started them. The
        //    server needs to release both polls in this case or it will cause problems in Opera since Opera can only execute
        //    JSONP code in the order it was added to the iframe.
        this.currentSerial = Math.floor(Math.random() * 100000000);
        // This gets set to false when we're "closing down" the connection (e.g. we're switching transports but there's still
        // incoming data from the server that we're waiting for).
        this.sendNewPolls = true;
        if (!util_3.isNodeSdk()) {
            //Each script holder registers a couple of uniquely named callbacks with the window. These are called from the
            //iframes where we put the long-polling script tags. We have two callbacks:
            //   1) Command Callback - Triggered for control issues, like starting a connection.
            //   2) Message Callback - Triggered when new data arrives.
            this.uniqueCallbackIdentifier = util_1.LUIDGenerator();
            window[exports.FIREBASE_LONGPOLL_COMMAND_CB_NAME + this.uniqueCallbackIdentifier] = commandCB;
            window[exports.FIREBASE_LONGPOLL_DATA_CB_NAME + this.uniqueCallbackIdentifier] = onMessageCB;
            //Create an iframe for us to add script tags to.
            this.myIFrame = FirebaseIFrameScriptHolder.createIFrame_();
            // Set the iframe's contents.
            var script = '';
            // if we set a javascript url, it's IE and we need to set the document domain. The javascript url is sufficient
            // for ie9, but ie8 needs to do it again in the document itself.
            if (this.myIFrame.src &&
                this.myIFrame.src.substr(0, 'javascript:'.length) === 'javascript:') {
                var currentDomain = document.domain;
                script = '<script>document.domain="' + currentDomain + '";</script>';
            }
            var iframeContents = '<html><body>' + script + '</body></html>';
            try {
                this.myIFrame.doc.open();
                this.myIFrame.doc.write(iframeContents);
                this.myIFrame.doc.close();
            }
            catch (e) {
                util_1.log('frame writing exception');
                if (e.stack) {
                    util_1.log(e.stack);
                }
                util_1.log(e);
            }
        }
        else {
            this.commandCB = commandCB;
            this.onMessageCB = onMessageCB;
        }
    }
    /**
     * Each browser has its own funny way to handle iframes. Here we mush them all together into one object that I can
     * actually use.
     * @private
     * @return {Element}
     */
    FirebaseIFrameScriptHolder.createIFrame_ = function () {
        var iframe = document.createElement('iframe');
        iframe.style.display = 'none';
        // This is necessary in order to initialize the document inside the iframe
        if (document.body) {
            document.body.appendChild(iframe);
            try {
                // If document.domain has been modified in IE, this will throw an error, and we need to set the
                // domain of the iframe's document manually. We can do this via a javascript: url as the src attribute
                // Also note that we must do this *after* the iframe has been appended to the page. Otherwise it doesn't work.
                var a = iframe.contentWindow.document;
                if (!a) {
                    // Apologies for the log-spam, I need to do something to keep closure from optimizing out the assignment above.
                    util_1.log('No IE domain setting required');
                }
            }
            catch (e) {
                var domain = document.domain;
                iframe.src =
                    "javascript:void((function(){document.open();document.domain='" +
                        domain +
                        "';document.close();})())";
            }
        }
        else {
            // LongPollConnection attempts to delay initialization until the document is ready, so hopefully this
            // never gets hit.
            throw 'Document body has not initialized. Wait to initialize Firebase until after the document is ready.';
        }
        // Get the document of the iframe in a browser-specific way.
        if (iframe.contentDocument) {
            iframe.doc = iframe.contentDocument; // Firefox, Opera, Safari
        }
        else if (iframe.contentWindow) {
            iframe.doc = iframe.contentWindow.document; // Internet Explorer
        }
        else if (iframe.document) {
            iframe.doc = iframe.document; //others?
        }
        return iframe;
    };
    /**
     * Cancel all outstanding queries and remove the frame.
     */
    FirebaseIFrameScriptHolder.prototype.close = function () {
        var _this = this;
        //Mark this iframe as dead, so no new requests are sent.
        this.alive = false;
        if (this.myIFrame) {
            //We have to actually remove all of the html inside this iframe before removing it from the
            //window, or IE will continue loading and executing the script tags we've already added, which
            //can lead to some errors being thrown. Setting innerHTML seems to be the easiest way to do this.
            this.myIFrame.doc.body.innerHTML = '';
            setTimeout(function () {
                if (_this.myIFrame !== null) {
                    document.body.removeChild(_this.myIFrame);
                    _this.myIFrame = null;
                }
            }, Math.floor(0));
        }
        if (util_3.isNodeSdk() && this.myID) {
            var urlParams = {};
            urlParams[exports.FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM] = 't';
            urlParams[exports.FIREBASE_LONGPOLL_ID_PARAM] = this.myID;
            urlParams[exports.FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;
            var theURL = this.urlFn(urlParams);
            FirebaseIFrameScriptHolder.nodeRestRequest(theURL);
        }
        // Protect from being called recursively.
        var onDisconnect = this.onDisconnect;
        if (onDisconnect) {
            this.onDisconnect = null;
            onDisconnect();
        }
    };
    /**
     * Actually start the long-polling session by adding the first script tag(s) to the iframe.
     * @param {!string} id - The ID of this connection
     * @param {!string} pw - The password for this connection
     */
    FirebaseIFrameScriptHolder.prototype.startLongPoll = function (id, pw) {
        this.myID = id;
        this.myPW = pw;
        this.alive = true;
        //send the initial request. If there are requests queued, make sure that we transmit as many as we are currently able to.
        while (this.newRequest_()) { }
    };
    /**
     * This is called any time someone might want a script tag to be added. It adds a script tag when there aren't
     * too many outstanding requests and we are still alive.
     *
     * If there are outstanding packet segments to send, it sends one. If there aren't, it sends a long-poll anyways if
     * needed.
     */
    FirebaseIFrameScriptHolder.prototype.newRequest_ = function () {
        // We keep one outstanding request open all the time to receive data, but if we need to send data
        // (pendingSegs.length > 0) then we create a new request to send the data.  The server will automatically
        // close the old request.
        if (this.alive &&
            this.sendNewPolls &&
            this.outstandingRequests.count() < (this.pendingSegs.length > 0 ? 2 : 1)) {
            //construct our url
            this.currentSerial++;
            var urlParams = {};
            urlParams[exports.FIREBASE_LONGPOLL_ID_PARAM] = this.myID;
            urlParams[exports.FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;
            urlParams[exports.FIREBASE_LONGPOLL_SERIAL_PARAM] = this.currentSerial;
            var theURL = this.urlFn(urlParams);
            //Now add as much data as we can.
            var curDataString = '';
            var i = 0;
            while (this.pendingSegs.length > 0) {
                //first, lets see if the next segment will fit.
                var nextSeg = this.pendingSegs[0];
                if (nextSeg.d.length + SEG_HEADER_SIZE + curDataString.length <=
                    MAX_URL_DATA_SIZE) {
                    //great, the segment will fit. Lets append it.
                    var theSeg = this.pendingSegs.shift();
                    curDataString =
                        curDataString +
                            '&' +
                            exports.FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM +
                            i +
                            '=' +
                            theSeg.seg +
                            '&' +
                            exports.FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET +
                            i +
                            '=' +
                            theSeg.ts +
                            '&' +
                            exports.FIREBASE_LONGPOLL_DATA_PARAM +
                            i +
                            '=' +
                            theSeg.d;
                    i++;
                }
                else {
                    break;
                }
            }
            theURL = theURL + curDataString;
            this.addLongPollTag_(theURL, this.currentSerial);
            return true;
        }
        else {
            return false;
        }
    };
    /**
     * Queue a packet for transmission to the server.
     * @param segnum - A sequential id for this packet segment used for reassembly
     * @param totalsegs - The total number of segments in this packet
     * @param data - The data for this segment.
     */
    FirebaseIFrameScriptHolder.prototype.enqueueSegment = function (segnum, totalsegs, data) {
        //add this to the queue of segments to send.
        this.pendingSegs.push({ seg: segnum, ts: totalsegs, d: data });
        //send the data immediately if there isn't already data being transmitted, unless
        //startLongPoll hasn't been called yet.
        if (this.alive) {
            this.newRequest_();
        }
    };
    /**
     * Add a script tag for a regular long-poll request.
     * @param {!string} url - The URL of the script tag.
     * @param {!number} serial - The serial number of the request.
     * @private
     */
    FirebaseIFrameScriptHolder.prototype.addLongPollTag_ = function (url, serial) {
        var _this = this;
        //remember that we sent this request.
        this.outstandingRequests.add(serial, 1);
        var doNewRequest = function () {
            _this.outstandingRequests.remove(serial);
            _this.newRequest_();
        };
        // If this request doesn't return on its own accord (by the server sending us some data), we'll
        // create a new one after the KEEPALIVE interval to make sure we always keep a fresh request open.
        var keepaliveTimeout = setTimeout(doNewRequest, Math.floor(KEEPALIVE_REQUEST_INTERVAL));
        var readyStateCB = function () {
            // Request completed.  Cancel the keepalive.
            clearTimeout(keepaliveTimeout);
            // Trigger a new request so we can continue receiving data.
            doNewRequest();
        };
        this.addTag(url, readyStateCB);
    };
    /**
     * Add an arbitrary script tag to the iframe.
     * @param {!string} url - The URL for the script tag source.
     * @param {!function()} loadCB - A callback to be triggered once the script has loaded.
     */
    FirebaseIFrameScriptHolder.prototype.addTag = function (url, loadCB) {
        var _this = this;
        if (util_3.isNodeSdk()) {
            this.doNodeLongPoll(url, loadCB);
        }
        else {
            setTimeout(function () {
                try {
                    // if we're already closed, don't add this poll
                    if (!_this.sendNewPolls)
                        return;
                    var newScript_1 = _this.myIFrame.doc.createElement('script');
                    newScript_1.type = 'text/javascript';
                    newScript_1.async = true;
                    newScript_1.src = url;
                    newScript_1.onload = newScript_1.onreadystatechange = function () {
                        var rstate = newScript_1.readyState;
                        if (!rstate || rstate === 'loaded' || rstate === 'complete') {
                            newScript_1.onload = newScript_1.onreadystatechange = null;
                            if (newScript_1.parentNode) {
                                newScript_1.parentNode.removeChild(newScript_1);
                            }
                            loadCB();
                        }
                    };
                    newScript_1.onerror = function () {
                        util_1.log('Long-poll script failed to load: ' + url);
                        _this.sendNewPolls = false;
                        _this.close();
                    };
                    _this.myIFrame.doc.body.appendChild(newScript_1);
                }
                catch (e) {
                    // TODO: we should make this error visible somehow
                }
            }, Math.floor(1));
        }
    };
    return FirebaseIFrameScriptHolder;
}());
exports.FirebaseIFrameScriptHolder = FirebaseIFrameScriptHolder;



},{"../core/stats/StatsManager":47,"../core/util/CountedSet":52,"../core/util/util":63,"./Constants":82,"./polling/PacketReceiver":85,"@firebase/util":92}],81:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("../core/util/util");
var storage_1 = require("../core/storage/storage");
var Constants_1 = require("./Constants");
var TransportManager_1 = require("./TransportManager");
// Abort upgrade attempt if it takes longer than 60s.
var UPGRADE_TIMEOUT = 60000;
// For some transports (WebSockets), we need to "validate" the transport by exchanging a few requests and responses.
// If we haven't sent enough requests within 5s, we'll start sending noop ping requests.
var DELAY_BEFORE_SENDING_EXTRA_REQUESTS = 5000;
// If the initial data sent triggers a lot of bandwidth (i.e. it's a large put or a listen for a large amount of data)
// then we may not be able to exchange our ping/pong requests within the healthy timeout.  So if we reach the timeout
// but we've sent/received enough bytes, we don't cancel the connection.
var BYTES_SENT_HEALTHY_OVERRIDE = 10 * 1024;
var BYTES_RECEIVED_HEALTHY_OVERRIDE = 100 * 1024;
var MESSAGE_TYPE = 't';
var MESSAGE_DATA = 'd';
var CONTROL_SHUTDOWN = 's';
var CONTROL_RESET = 'r';
var CONTROL_ERROR = 'e';
var CONTROL_PONG = 'o';
var SWITCH_ACK = 'a';
var END_TRANSMISSION = 'n';
var PING = 'p';
var SERVER_HELLO = 'h';
/**
 * Creates a new real-time connection to the server using whichever method works
 * best in the current browser.
 *
 * @constructor
 */
var Connection = /** @class */ (function () {
    /**
     * @param {!string} id - an id for this connection
     * @param {!RepoInfo} repoInfo_ - the info for the endpoint to connect to
     * @param {function(Object)} onMessage_ - the callback to be triggered when a server-push message arrives
     * @param {function(number, string)} onReady_ - the callback to be triggered when this connection is ready to send messages.
     * @param {function()} onDisconnect_ - the callback to be triggered when a connection was lost
     * @param {function(string)} onKill_ - the callback to be triggered when this connection has permanently shut down.
     * @param {string=} lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server
     */
    function Connection(id, repoInfo_, onMessage_, onReady_, onDisconnect_, onKill_, lastSessionId) {
        this.id = id;
        this.repoInfo_ = repoInfo_;
        this.onMessage_ = onMessage_;
        this.onReady_ = onReady_;
        this.onDisconnect_ = onDisconnect_;
        this.onKill_ = onKill_;
        this.lastSessionId = lastSessionId;
        this.connectionCount = 0;
        this.pendingDataMessages = [];
        this.state_ = 0 /* CONNECTING */;
        this.log_ = util_1.logWrapper('c:' + this.id + ':');
        this.transportManager_ = new TransportManager_1.TransportManager(repoInfo_);
        this.log_('Connection created');
        this.start_();
    }
    /**
     * Starts a connection attempt
     * @private
     */
    Connection.prototype.start_ = function () {
        var _this = this;
        var conn = this.transportManager_.initialTransport();
        this.conn_ = new conn(this.nextTransportId_(), this.repoInfo_, undefined, this.lastSessionId);
        // For certain transports (WebSockets), we need to send and receive several messages back and forth before we
        // can consider the transport healthy.
        this.primaryResponsesRequired_ = conn['responsesRequiredToBeHealthy'] || 0;
        var onMessageReceived = this.connReceiver_(this.conn_);
        var onConnectionLost = this.disconnReceiver_(this.conn_);
        this.tx_ = this.conn_;
        this.rx_ = this.conn_;
        this.secondaryConn_ = null;
        this.isHealthy_ = false;
        /*
         * Firefox doesn't like when code from one iframe tries to create another iframe by way of the parent frame.
         * This can occur in the case of a redirect, i.e. we guessed wrong on what server to connect to and received a reset.
         * Somehow, setTimeout seems to make this ok. That doesn't make sense from a security perspective, since you should
         * still have the context of your originating frame.
         */
        setTimeout(function () {
            // this.conn_ gets set to null in some of the tests. Check to make sure it still exists before using it
            _this.conn_ && _this.conn_.open(onMessageReceived, onConnectionLost);
        }, Math.floor(0));
        var healthyTimeout_ms = conn['healthyTimeout'] || 0;
        if (healthyTimeout_ms > 0) {
            this.healthyTimeout_ = util_1.setTimeoutNonBlocking(function () {
                _this.healthyTimeout_ = null;
                if (!_this.isHealthy_) {
                    if (_this.conn_ &&
                        _this.conn_.bytesReceived > BYTES_RECEIVED_HEALTHY_OVERRIDE) {
                        _this.log_('Connection exceeded healthy timeout but has received ' +
                            _this.conn_.bytesReceived +
                            ' bytes.  Marking connection healthy.');
                        _this.isHealthy_ = true;
                        _this.conn_.markConnectionHealthy();
                    }
                    else if (_this.conn_ &&
                        _this.conn_.bytesSent > BYTES_SENT_HEALTHY_OVERRIDE) {
                        _this.log_('Connection exceeded healthy timeout but has sent ' +
                            _this.conn_.bytesSent +
                            ' bytes.  Leaving connection alive.');
                        // NOTE: We don't want to mark it healthy, since we have no guarantee that the bytes have made it to
                        // the server.
                    }
                    else {
                        _this.log_('Closing unhealthy connection after timeout.');
                        _this.close();
                    }
                }
            }, Math.floor(healthyTimeout_ms));
        }
    };
    /**
     * @return {!string}
     * @private
     */
    Connection.prototype.nextTransportId_ = function () {
        return 'c:' + this.id + ':' + this.connectionCount++;
    };
    Connection.prototype.disconnReceiver_ = function (conn) {
        var _this = this;
        return function (everConnected) {
            if (conn === _this.conn_) {
                _this.onConnectionLost_(everConnected);
            }
            else if (conn === _this.secondaryConn_) {
                _this.log_('Secondary connection lost.');
                _this.onSecondaryConnectionLost_();
            }
            else {
                _this.log_('closing an old connection');
            }
        };
    };
    Connection.prototype.connReceiver_ = function (conn) {
        var _this = this;
        return function (message) {
            if (_this.state_ != 2 /* DISCONNECTED */) {
                if (conn === _this.rx_) {
                    _this.onPrimaryMessageReceived_(message);
                }
                else if (conn === _this.secondaryConn_) {
                    _this.onSecondaryMessageReceived_(message);
                }
                else {
                    _this.log_('message on old connection');
                }
            }
        };
    };
    /**
     *
     * @param {Object} dataMsg An arbitrary data message to be sent to the server
     */
    Connection.prototype.sendRequest = function (dataMsg) {
        // wrap in a data message envelope and send it on
        var msg = { t: 'd', d: dataMsg };
        this.sendData_(msg);
    };
    Connection.prototype.tryCleanupConnection = function () {
        if (this.tx_ === this.secondaryConn_ && this.rx_ === this.secondaryConn_) {
            this.log_('cleaning up and promoting a connection: ' + this.secondaryConn_.connId);
            this.conn_ = this.secondaryConn_;
            this.secondaryConn_ = null;
            // the server will shutdown the old connection
        }
    };
    Connection.prototype.onSecondaryControl_ = function (controlData) {
        if (MESSAGE_TYPE in controlData) {
            var cmd = controlData[MESSAGE_TYPE];
            if (cmd === SWITCH_ACK) {
                this.upgradeIfSecondaryHealthy_();
            }
            else if (cmd === CONTROL_RESET) {
                // Most likely the session wasn't valid. Abandon the switch attempt
                this.log_('Got a reset on secondary, closing it');
                this.secondaryConn_.close();
                // If we were already using this connection for something, than we need to fully close
                if (this.tx_ === this.secondaryConn_ ||
                    this.rx_ === this.secondaryConn_) {
                    this.close();
                }
            }
            else if (cmd === CONTROL_PONG) {
                this.log_('got pong on secondary.');
                this.secondaryResponsesRequired_--;
                this.upgradeIfSecondaryHealthy_();
            }
        }
    };
    Connection.prototype.onSecondaryMessageReceived_ = function (parsedData) {
        var layer = util_1.requireKey('t', parsedData);
        var data = util_1.requireKey('d', parsedData);
        if (layer == 'c') {
            this.onSecondaryControl_(data);
        }
        else if (layer == 'd') {
            // got a data message, but we're still second connection. Need to buffer it up
            this.pendingDataMessages.push(data);
        }
        else {
            throw new Error('Unknown protocol layer: ' + layer);
        }
    };
    Connection.prototype.upgradeIfSecondaryHealthy_ = function () {
        if (this.secondaryResponsesRequired_ <= 0) {
            this.log_('Secondary connection is healthy.');
            this.isHealthy_ = true;
            this.secondaryConn_.markConnectionHealthy();
            this.proceedWithUpgrade_();
        }
        else {
            // Send a ping to make sure the connection is healthy.
            this.log_('sending ping on secondary.');
            this.secondaryConn_.send({ t: 'c', d: { t: PING, d: {} } });
        }
    };
    Connection.prototype.proceedWithUpgrade_ = function () {
        // tell this connection to consider itself open
        this.secondaryConn_.start();
        // send ack
        this.log_('sending client ack on secondary');
        this.secondaryConn_.send({ t: 'c', d: { t: SWITCH_ACK, d: {} } });
        // send end packet on primary transport, switch to sending on this one
        // can receive on this one, buffer responses until end received on primary transport
        this.log_('Ending transmission on primary');
        this.conn_.send({ t: 'c', d: { t: END_TRANSMISSION, d: {} } });
        this.tx_ = this.secondaryConn_;
        this.tryCleanupConnection();
    };
    Connection.prototype.onPrimaryMessageReceived_ = function (parsedData) {
        // Must refer to parsedData properties in quotes, so closure doesn't touch them.
        var layer = util_1.requireKey('t', parsedData);
        var data = util_1.requireKey('d', parsedData);
        if (layer == 'c') {
            this.onControl_(data);
        }
        else if (layer == 'd') {
            this.onDataMessage_(data);
        }
    };
    Connection.prototype.onDataMessage_ = function (message) {
        this.onPrimaryResponse_();
        // We don't do anything with data messages, just kick them up a level
        this.onMessage_(message);
    };
    Connection.prototype.onPrimaryResponse_ = function () {
        if (!this.isHealthy_) {
            this.primaryResponsesRequired_--;
            if (this.primaryResponsesRequired_ <= 0) {
                this.log_('Primary connection is healthy.');
                this.isHealthy_ = true;
                this.conn_.markConnectionHealthy();
            }
        }
    };
    Connection.prototype.onControl_ = function (controlData) {
        var cmd = util_1.requireKey(MESSAGE_TYPE, controlData);
        if (MESSAGE_DATA in controlData) {
            var payload = controlData[MESSAGE_DATA];
            if (cmd === SERVER_HELLO) {
                this.onHandshake_(payload);
            }
            else if (cmd === END_TRANSMISSION) {
                this.log_('recvd end transmission on primary');
                this.rx_ = this.secondaryConn_;
                for (var i = 0; i < this.pendingDataMessages.length; ++i) {
                    this.onDataMessage_(this.pendingDataMessages[i]);
                }
                this.pendingDataMessages = [];
                this.tryCleanupConnection();
            }
            else if (cmd === CONTROL_SHUTDOWN) {
                // This was previously the 'onKill' callback passed to the lower-level connection
                // payload in this case is the reason for the shutdown. Generally a human-readable error
                this.onConnectionShutdown_(payload);
            }
            else if (cmd === CONTROL_RESET) {
                // payload in this case is the host we should contact
                this.onReset_(payload);
            }
            else if (cmd === CONTROL_ERROR) {
                util_1.error('Server Error: ' + payload);
            }
            else if (cmd === CONTROL_PONG) {
                this.log_('got pong on primary.');
                this.onPrimaryResponse_();
                this.sendPingOnPrimaryIfNecessary_();
            }
            else {
                util_1.error('Unknown control packet command: ' + cmd);
            }
        }
    };
    /**
     *
     * @param {Object} handshake The handshake data returned from the server
     * @private
     */
    Connection.prototype.onHandshake_ = function (handshake) {
        var timestamp = handshake.ts;
        var version = handshake.v;
        var host = handshake.h;
        this.sessionId = handshake.s;
        this.repoInfo_.updateHost(host);
        // if we've already closed the connection, then don't bother trying to progress further
        if (this.state_ == 0 /* CONNECTING */) {
            this.conn_.start();
            this.onConnectionEstablished_(this.conn_, timestamp);
            if (Constants_1.PROTOCOL_VERSION !== version) {
                util_1.warn('Protocol version mismatch detected');
            }
            // TODO: do we want to upgrade? when? maybe a delay?
            this.tryStartUpgrade_();
        }
    };
    Connection.prototype.tryStartUpgrade_ = function () {
        var conn = this.transportManager_.upgradeTransport();
        if (conn) {
            this.startUpgrade_(conn);
        }
    };
    Connection.prototype.startUpgrade_ = function (conn) {
        var _this = this;
        this.secondaryConn_ = new conn(this.nextTransportId_(), this.repoInfo_, this.sessionId);
        // For certain transports (WebSockets), we need to send and receive several messages back and forth before we
        // can consider the transport healthy.
        this.secondaryResponsesRequired_ =
            conn['responsesRequiredToBeHealthy'] || 0;
        var onMessage = this.connReceiver_(this.secondaryConn_);
        var onDisconnect = this.disconnReceiver_(this.secondaryConn_);
        this.secondaryConn_.open(onMessage, onDisconnect);
        // If we haven't successfully upgraded after UPGRADE_TIMEOUT, give up and kill the secondary.
        util_1.setTimeoutNonBlocking(function () {
            if (_this.secondaryConn_) {
                _this.log_('Timed out trying to upgrade.');
                _this.secondaryConn_.close();
            }
        }, Math.floor(UPGRADE_TIMEOUT));
    };
    Connection.prototype.onReset_ = function (host) {
        this.log_('Reset packet received.  New host: ' + host);
        this.repoInfo_.updateHost(host);
        // TODO: if we're already "connected", we need to trigger a disconnect at the next layer up.
        // We don't currently support resets after the connection has already been established
        if (this.state_ === 1 /* CONNECTED */) {
            this.close();
        }
        else {
            // Close whatever connections we have open and start again.
            this.closeConnections_();
            this.start_();
        }
    };
    Connection.prototype.onConnectionEstablished_ = function (conn, timestamp) {
        var _this = this;
        this.log_('Realtime connection established.');
        this.conn_ = conn;
        this.state_ = 1 /* CONNECTED */;
        if (this.onReady_) {
            this.onReady_(timestamp, this.sessionId);
            this.onReady_ = null;
        }
        // If after 5 seconds we haven't sent enough requests to the server to get the connection healthy,
        // send some pings.
        if (this.primaryResponsesRequired_ === 0) {
            this.log_('Primary connection is healthy.');
            this.isHealthy_ = true;
        }
        else {
            util_1.setTimeoutNonBlocking(function () {
                _this.sendPingOnPrimaryIfNecessary_();
            }, Math.floor(DELAY_BEFORE_SENDING_EXTRA_REQUESTS));
        }
    };
    Connection.prototype.sendPingOnPrimaryIfNecessary_ = function () {
        // If the connection isn't considered healthy yet, we'll send a noop ping packet request.
        if (!this.isHealthy_ && this.state_ === 1 /* CONNECTED */) {
            this.log_('sending ping on primary.');
            this.sendData_({ t: 'c', d: { t: PING, d: {} } });
        }
    };
    Connection.prototype.onSecondaryConnectionLost_ = function () {
        var conn = this.secondaryConn_;
        this.secondaryConn_ = null;
        if (this.tx_ === conn || this.rx_ === conn) {
            // we are relying on this connection already in some capacity. Therefore, a failure is real
            this.close();
        }
    };
    /**
     *
     * @param {boolean} everConnected Whether or not the connection ever reached a server. Used to determine if
     * we should flush the host cache
     * @private
     */
    Connection.prototype.onConnectionLost_ = function (everConnected) {
        this.conn_ = null;
        // NOTE: IF you're seeing a Firefox error for this line, I think it might be because it's getting
        // called on window close and RealtimeState.CONNECTING is no longer defined.  Just a guess.
        if (!everConnected && this.state_ === 0 /* CONNECTING */) {
            this.log_('Realtime connection failed.');
            // Since we failed to connect at all, clear any cached entry for this namespace in case the machine went away
            if (this.repoInfo_.isCacheableHost()) {
                storage_1.PersistentStorage.remove('host:' + this.repoInfo_.host);
                // reset the internal host to what we would show the user, i.e. <ns>.firebaseio.com
                this.repoInfo_.internalHost = this.repoInfo_.host;
            }
        }
        else if (this.state_ === 1 /* CONNECTED */) {
            this.log_('Realtime connection lost.');
        }
        this.close();
    };
    /**
     *
     * @param {string} reason
     * @private
     */
    Connection.prototype.onConnectionShutdown_ = function (reason) {
        this.log_('Connection shutdown command received. Shutting down...');
        if (this.onKill_) {
            this.onKill_(reason);
            this.onKill_ = null;
        }
        // We intentionally don't want to fire onDisconnect (kill is a different case),
        // so clear the callback.
        this.onDisconnect_ = null;
        this.close();
    };
    Connection.prototype.sendData_ = function (data) {
        if (this.state_ !== 1 /* CONNECTED */) {
            throw 'Connection is not connected';
        }
        else {
            this.tx_.send(data);
        }
    };
    /**
     * Cleans up this connection, calling the appropriate callbacks
     */
    Connection.prototype.close = function () {
        if (this.state_ !== 2 /* DISCONNECTED */) {
            this.log_('Closing realtime connection.');
            this.state_ = 2 /* DISCONNECTED */;
            this.closeConnections_();
            if (this.onDisconnect_) {
                this.onDisconnect_();
                this.onDisconnect_ = null;
            }
        }
    };
    /**
     *
     * @private
     */
    Connection.prototype.closeConnections_ = function () {
        this.log_('Shutting down all connections');
        if (this.conn_) {
            this.conn_.close();
            this.conn_ = null;
        }
        if (this.secondaryConn_) {
            this.secondaryConn_.close();
            this.secondaryConn_ = null;
        }
        if (this.healthyTimeout_) {
            clearTimeout(this.healthyTimeout_);
            this.healthyTimeout_ = null;
        }
    };
    return Connection;
}());
exports.Connection = Connection;



},{"../core/storage/storage":51,"../core/util/util":63,"./Constants":82,"./TransportManager":83}],82:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.PROTOCOL_VERSION = '5';
exports.VERSION_PARAM = 'v';
exports.TRANSPORT_SESSION_PARAM = 's';
exports.REFERER_PARAM = 'r';
exports.FORGE_REF = 'f';
exports.FORGE_DOMAIN = 'firebaseio.com';
exports.LAST_SESSION_PARAM = 'ls';
exports.WEBSOCKET = 'websocket';
exports.LONG_POLLING = 'long_polling';



},{}],83:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var BrowserPollConnection_1 = require("./BrowserPollConnection");
var WebSocketConnection_1 = require("./WebSocketConnection");
var util_1 = require("../core/util/util");
/**
 * Currently simplistic, this class manages what transport a Connection should use at various stages of its
 * lifecycle.
 *
 * It starts with longpolling in a browser, and httppolling on node. It then upgrades to websockets if
 * they are available.
 * @constructor
 */
var TransportManager = /** @class */ (function () {
    /**
     * @param {!RepoInfo} repoInfo Metadata around the namespace we're connecting to
     */
    function TransportManager(repoInfo) {
        this.initTransports_(repoInfo);
    }
    Object.defineProperty(TransportManager, "ALL_TRANSPORTS", {
        /**
         * @const
         * @type {!Array.<function(new:Transport, string, RepoInfo, string=)>}
         */
        get: function () {
            return [BrowserPollConnection_1.BrowserPollConnection, WebSocketConnection_1.WebSocketConnection];
        },
        enumerable: true,
        configurable: true
    });
    /**
     * @param {!RepoInfo} repoInfo
     * @private
     */
    TransportManager.prototype.initTransports_ = function (repoInfo) {
        var isWebSocketsAvailable = WebSocketConnection_1.WebSocketConnection && WebSocketConnection_1.WebSocketConnection['isAvailable']();
        var isSkipPollConnection = isWebSocketsAvailable && !WebSocketConnection_1.WebSocketConnection.previouslyFailed();
        if (repoInfo.webSocketOnly) {
            if (!isWebSocketsAvailable)
                util_1.warn("wss:// URL used, but browser isn't known to support websockets.  Trying anyway.");
            isSkipPollConnection = true;
        }
        if (isSkipPollConnection) {
            this.transports_ = [WebSocketConnection_1.WebSocketConnection];
        }
        else {
            var transports_1 = (this.transports_ = []);
            util_1.each(TransportManager.ALL_TRANSPORTS, function (i, transport) {
                if (transport && transport['isAvailable']()) {
                    transports_1.push(transport);
                }
            });
        }
    };
    /**
     * @return {function(new:Transport, !string, !RepoInfo, string=, string=)} The constructor for the
     * initial transport to use
     */
    TransportManager.prototype.initialTransport = function () {
        if (this.transports_.length > 0) {
            return this.transports_[0];
        }
        else {
            throw new Error('No transports available');
        }
    };
    /**
     * @return {?function(new:Transport, function(),function(), string=)} The constructor for the next
     * transport, or null
     */
    TransportManager.prototype.upgradeTransport = function () {
        if (this.transports_.length > 1) {
            return this.transports_[1];
        }
        else {
            return null;
        }
    };
    return TransportManager;
}());
exports.TransportManager = TransportManager;



},{"../core/util/util":63,"./BrowserPollConnection":80,"./WebSocketConnection":84}],84:[function(require,module,exports){
(function (process){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var app_1 = require("@firebase/app");
var util_1 = require("@firebase/util");
var util_2 = require("../core/util/util");
var StatsManager_1 = require("../core/stats/StatsManager");
var Constants_1 = require("./Constants");
var util_3 = require("@firebase/util");
var storage_1 = require("../core/storage/storage");
var util_4 = require("@firebase/util");
var util_5 = require("@firebase/util");
var WEBSOCKET_MAX_FRAME_SIZE = 16384;
var WEBSOCKET_KEEPALIVE_INTERVAL = 45000;
var WebSocketImpl = null;
if (typeof MozWebSocket !== 'undefined') {
    WebSocketImpl = MozWebSocket;
}
else if (typeof WebSocket !== 'undefined') {
    WebSocketImpl = WebSocket;
}
function setWebSocketImpl(impl) {
    WebSocketImpl = impl;
}
exports.setWebSocketImpl = setWebSocketImpl;
/**
 * Create a new websocket connection with the given callbacks.
 * @constructor
 * @implements {Transport}
 */
var WebSocketConnection = /** @class */ (function () {
    /**
     * @param {string} connId identifier for this transport
     * @param {RepoInfo} repoInfo The info for the websocket endpoint.
     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport
     *                                         session
     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection
     */
    function WebSocketConnection(connId, repoInfo, transportSessionId, lastSessionId) {
        this.connId = connId;
        this.keepaliveTimer = null;
        this.frames = null;
        this.totalFrames = 0;
        this.bytesSent = 0;
        this.bytesReceived = 0;
        this.log_ = util_2.logWrapper(this.connId);
        this.stats_ = StatsManager_1.StatsManager.getCollection(repoInfo);
        this.connURL = WebSocketConnection.connectionURL_(repoInfo, transportSessionId, lastSessionId);
    }
    /**
     * @param {RepoInfo} repoInfo The info for the websocket endpoint.
     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport
     *                                         session
     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection
     * @return {string} connection url
     * @private
     */
    WebSocketConnection.connectionURL_ = function (repoInfo, transportSessionId, lastSessionId) {
        var urlParams = {};
        urlParams[Constants_1.VERSION_PARAM] = Constants_1.PROTOCOL_VERSION;
        if (!util_5.isNodeSdk() &&
            typeof location !== 'undefined' &&
            location.href &&
            location.href.indexOf(Constants_1.FORGE_DOMAIN) !== -1) {
            urlParams[Constants_1.REFERER_PARAM] = Constants_1.FORGE_REF;
        }
        if (transportSessionId) {
            urlParams[Constants_1.TRANSPORT_SESSION_PARAM] = transportSessionId;
        }
        if (lastSessionId) {
            urlParams[Constants_1.LAST_SESSION_PARAM] = lastSessionId;
        }
        return repoInfo.connectionURL(Constants_1.WEBSOCKET, urlParams);
    };
    /**
     *
     * @param onMessage Callback when messages arrive
     * @param onDisconnect Callback with connection lost.
     */
    WebSocketConnection.prototype.open = function (onMessage, onDisconnect) {
        var _this = this;
        this.onDisconnect = onDisconnect;
        this.onMessage = onMessage;
        this.log_('Websocket connecting to ' + this.connURL);
        this.everConnected_ = false;
        // Assume failure until proven otherwise.
        storage_1.PersistentStorage.set('previous_websocket_failure', true);
        try {
            if (util_5.isNodeSdk()) {
                var device = util_3.CONSTANTS.NODE_ADMIN ? 'AdminNode' : 'Node';
                // UA Format: Firebase/<wire_protocol>/<sdk_version>/<platform>/<device>
                var options = {
                    headers: {
                        'User-Agent': "Firebase/" + Constants_1.PROTOCOL_VERSION + "/" + app_1.default.SDK_VERSION + "/" + process.platform + "/" + device
                    }
                };
                // Plumb appropriate http_proxy environment variable into faye-websocket if it exists.
                var env = process['env'];
                var proxy = this.connURL.indexOf('wss://') == 0
                    ? env['HTTPS_PROXY'] || env['https_proxy']
                    : env['HTTP_PROXY'] || env['http_proxy'];
                if (proxy) {
                    options['proxy'] = { origin: proxy };
                }
                this.mySock = new WebSocketImpl(this.connURL, [], options);
            }
            else {
                this.mySock = new WebSocketImpl(this.connURL);
            }
        }
        catch (e) {
            this.log_('Error instantiating WebSocket.');
            var error = e.message || e.data;
            if (error) {
                this.log_(error);
            }
            this.onClosed_();
            return;
        }
        this.mySock.onopen = function () {
            _this.log_('Websocket connected.');
            _this.everConnected_ = true;
        };
        this.mySock.onclose = function () {
            _this.log_('Websocket connection was disconnected.');
            _this.mySock = null;
            _this.onClosed_();
        };
        this.mySock.onmessage = function (m) {
            _this.handleIncomingFrame(m);
        };
        this.mySock.onerror = function (e) {
            _this.log_('WebSocket error.  Closing connection.');
            var error = e.message || e.data;
            if (error) {
                _this.log_(error);
            }
            _this.onClosed_();
        };
    };
    /**
     * No-op for websockets, we don't need to do anything once the connection is confirmed as open
     */
    WebSocketConnection.prototype.start = function () { };
    WebSocketConnection.forceDisallow = function () {
        WebSocketConnection.forceDisallow_ = true;
    };
    WebSocketConnection.isAvailable = function () {
        var isOldAndroid = false;
        if (typeof navigator !== 'undefined' && navigator.userAgent) {
            var oldAndroidRegex = /Android ([0-9]{0,}\.[0-9]{0,})/;
            var oldAndroidMatch = navigator.userAgent.match(oldAndroidRegex);
            if (oldAndroidMatch && oldAndroidMatch.length > 1) {
                if (parseFloat(oldAndroidMatch[1]) < 4.4) {
                    isOldAndroid = true;
                }
            }
        }
        return (!isOldAndroid &&
            WebSocketImpl !== null &&
            !WebSocketConnection.forceDisallow_);
    };
    /**
     * Returns true if we previously failed to connect with this transport.
     * @return {boolean}
     */
    WebSocketConnection.previouslyFailed = function () {
        // If our persistent storage is actually only in-memory storage,
        // we default to assuming that it previously failed to be safe.
        return (storage_1.PersistentStorage.isInMemoryStorage ||
            storage_1.PersistentStorage.get('previous_websocket_failure') === true);
    };
    WebSocketConnection.prototype.markConnectionHealthy = function () {
        storage_1.PersistentStorage.remove('previous_websocket_failure');
    };
    WebSocketConnection.prototype.appendFrame_ = function (data) {
        this.frames.push(data);
        if (this.frames.length == this.totalFrames) {
            var fullMess = this.frames.join('');
            this.frames = null;
            var jsonMess = util_4.jsonEval(fullMess);
            //handle the message
            this.onMessage(jsonMess);
        }
    };
    /**
     * @param {number} frameCount The number of frames we are expecting from the server
     * @private
     */
    WebSocketConnection.prototype.handleNewFrameCount_ = function (frameCount) {
        this.totalFrames = frameCount;
        this.frames = [];
    };
    /**
     * Attempts to parse a frame count out of some text. If it can't, assumes a value of 1
     * @param {!String} data
     * @return {?String} Any remaining data to be process, or null if there is none
     * @private
     */
    WebSocketConnection.prototype.extractFrameCount_ = function (data) {
        util_1.assert(this.frames === null, 'We already have a frame buffer');
        // TODO: The server is only supposed to send up to 9999 frames (i.e. length <= 4), but that isn't being enforced
        // currently.  So allowing larger frame counts (length <= 6).  See https://app.asana.com/0/search/8688598998380/8237608042508
        if (data.length <= 6) {
            var frameCount = Number(data);
            if (!isNaN(frameCount)) {
                this.handleNewFrameCount_(frameCount);
                return null;
            }
        }
        this.handleNewFrameCount_(1);
        return data;
    };
    /**
     * Process a websocket frame that has arrived from the server.
     * @param mess The frame data
     */
    WebSocketConnection.prototype.handleIncomingFrame = function (mess) {
        if (this.mySock === null)
            return; // Chrome apparently delivers incoming packets even after we .close() the connection sometimes.
        var data = mess['data'];
        this.bytesReceived += data.length;
        this.stats_.incrementCounter('bytes_received', data.length);
        this.resetKeepAlive();
        if (this.frames !== null) {
            // we're buffering
            this.appendFrame_(data);
        }
        else {
            // try to parse out a frame count, otherwise, assume 1 and process it
            var remainingData = this.extractFrameCount_(data);
            if (remainingData !== null) {
                this.appendFrame_(remainingData);
            }
        }
    };
    /**
     * Send a message to the server
     * @param {Object} data The JSON object to transmit
     */
    WebSocketConnection.prototype.send = function (data) {
        this.resetKeepAlive();
        var dataStr = util_4.stringify(data);
        this.bytesSent += dataStr.length;
        this.stats_.incrementCounter('bytes_sent', dataStr.length);
        //We can only fit a certain amount in each websocket frame, so we need to split this request
        //up into multiple pieces if it doesn't fit in one request.
        var dataSegs = util_2.splitStringBySize(dataStr, WEBSOCKET_MAX_FRAME_SIZE);
        //Send the length header
        if (dataSegs.length > 1) {
            this.sendString_(String(dataSegs.length));
        }
        //Send the actual data in segments.
        for (var i = 0; i < dataSegs.length; i++) {
            this.sendString_(dataSegs[i]);
        }
    };
    WebSocketConnection.prototype.shutdown_ = function () {
        this.isClosed_ = true;
        if (this.keepaliveTimer) {
            clearInterval(this.keepaliveTimer);
            this.keepaliveTimer = null;
        }
        if (this.mySock) {
            this.mySock.close();
            this.mySock = null;
        }
    };
    WebSocketConnection.prototype.onClosed_ = function () {
        if (!this.isClosed_) {
            this.log_('WebSocket is closing itself');
            this.shutdown_();
            // since this is an internal close, trigger the close listener
            if (this.onDisconnect) {
                this.onDisconnect(this.everConnected_);
                this.onDisconnect = null;
            }
        }
    };
    /**
     * External-facing close handler.
     * Close the websocket and kill the connection.
     */
    WebSocketConnection.prototype.close = function () {
        if (!this.isClosed_) {
            this.log_('WebSocket is being closed');
            this.shutdown_();
        }
    };
    /**
     * Kill the current keepalive timer and start a new one, to ensure that it always fires N seconds after
     * the last activity.
     */
    WebSocketConnection.prototype.resetKeepAlive = function () {
        var _this = this;
        clearInterval(this.keepaliveTimer);
        this.keepaliveTimer = setInterval(function () {
            //If there has been no websocket activity for a while, send a no-op
            if (_this.mySock) {
                _this.sendString_('0');
            }
            _this.resetKeepAlive();
        }, Math.floor(WEBSOCKET_KEEPALIVE_INTERVAL));
    };
    /**
     * Send a string over the websocket.
     *
     * @param {string} str String to send.
     * @private
     */
    WebSocketConnection.prototype.sendString_ = function (str) {
        // Firefox seems to sometimes throw exceptions (NS_ERROR_UNEXPECTED) from websocket .send()
        // calls for some unknown reason.  We treat these as an error and disconnect.
        // See https://app.asana.com/0/58926111402292/68021340250410
        try {
            this.mySock.send(str);
        }
        catch (e) {
            this.log_('Exception thrown from WebSocket.send():', e.message || e.data, 'Closing connection.');
            setTimeout(this.onClosed_.bind(this), 0);
        }
    };
    /**
     * Number of response before we consider the connection "healthy."
     * @type {number}
     */
    WebSocketConnection.responsesRequiredToBeHealthy = 2;
    /**
     * Time to wait for the connection te become healthy before giving up.
     * @type {number}
     */
    WebSocketConnection.healthyTimeout = 30000;
    return WebSocketConnection;
}());
exports.WebSocketConnection = WebSocketConnection;



}).call(this,require('_process'))
},{"../core/stats/StatsManager":47,"../core/storage/storage":51,"../core/util/util":63,"./Constants":82,"@firebase/app":1,"@firebase/util":92,"_process":119}],85:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("../../core/util/util");
/**
 * This class ensures the packets from the server arrive in order
 * This class takes data from the server and ensures it gets passed into the callbacks in order.
 * @constructor
 */
var PacketReceiver = /** @class */ (function () {
    /**
     * @param onMessage_
     */
    function PacketReceiver(onMessage_) {
        this.onMessage_ = onMessage_;
        this.pendingResponses = [];
        this.currentResponseNum = 0;
        this.closeAfterResponse = -1;
        this.onClose = null;
    }
    PacketReceiver.prototype.closeAfter = function (responseNum, callback) {
        this.closeAfterResponse = responseNum;
        this.onClose = callback;
        if (this.closeAfterResponse < this.currentResponseNum) {
            this.onClose();
            this.onClose = null;
        }
    };
    /**
     * Each message from the server comes with a response number, and an array of data. The responseNumber
     * allows us to ensure that we process them in the right order, since we can't be guaranteed that all
     * browsers will respond in the same order as the requests we sent
     * @param {number} requestNum
     * @param {Array} data
     */
    PacketReceiver.prototype.handleResponse = function (requestNum, data) {
        var _this = this;
        this.pendingResponses[requestNum] = data;
        var _loop_1 = function () {
            var toProcess = this_1.pendingResponses[this_1.currentResponseNum];
            delete this_1.pendingResponses[this_1.currentResponseNum];
            var _loop_2 = function (i) {
                if (toProcess[i]) {
                    util_1.exceptionGuard(function () {
                        _this.onMessage_(toProcess[i]);
                    });
                }
            };
            for (var i = 0; i < toProcess.length; ++i) {
                _loop_2(i);
            }
            if (this_1.currentResponseNum === this_1.closeAfterResponse) {
                if (this_1.onClose) {
                    this_1.onClose();
                    this_1.onClose = null;
                }
                return "break";
            }
            this_1.currentResponseNum++;
        };
        var this_1 = this;
        while (this.pendingResponses[this.currentResponseNum]) {
            var state_1 = _loop_1();
            if (state_1 === "break")
                break;
        }
    };
    return PacketReceiver;
}());
exports.PacketReceiver = PacketReceiver;



},{"../../core/util/util":63}],86:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var logger_1 = require("./src/logger");
function setLogLevel(level) {
    logger_1.instances.forEach(function (inst) {
        inst.logLevel = level;
    });
}
exports.setLogLevel = setLogLevel;
var logger_2 = require("./src/logger");
exports.Logger = logger_2.Logger;
exports.LogLevel = logger_2.LogLevel;



},{"./src/logger":87}],87:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * A container for all of the Logger instances
 */
exports.instances = [];
/**
 * The JS SDK supports 5 log levels and also allows a user the ability to
 * silence the logs altogether.
 *
 * The order is a follows:
 * DEBUG < VERBOSE < INFO < WARN < ERROR
 *
 * All of the log types above the current log level will be captured (i.e. if
 * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and
 * `VERBOSE` logs will not)
 */
var LogLevel;
(function (LogLevel) {
    LogLevel[LogLevel["DEBUG"] = 0] = "DEBUG";
    LogLevel[LogLevel["VERBOSE"] = 1] = "VERBOSE";
    LogLevel[LogLevel["INFO"] = 2] = "INFO";
    LogLevel[LogLevel["WARN"] = 3] = "WARN";
    LogLevel[LogLevel["ERROR"] = 4] = "ERROR";
    LogLevel[LogLevel["SILENT"] = 5] = "SILENT";
})(LogLevel = exports.LogLevel || (exports.LogLevel = {}));
/**
 * The default log level
 */
var defaultLogLevel = LogLevel.INFO;
/**
 * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR
 * messages on to their corresponding console counterparts (if the log method
 * is supported by the current log level)
 */
var defaultLogHandler = function (instance, logType) {
    var args = [];
    for (var _i = 2; _i < arguments.length; _i++) {
        args[_i - 2] = arguments[_i];
    }
    if (logType < instance.logLevel)
        return;
    var now = new Date().toISOString();
    switch (logType) {
        /**
         * By default, `console.debug` is not displayed in the developer console (in
         * chrome). To avoid forcing users to have to opt-in to these logs twice
         * (i.e. once for firebase, and once in the console), we are sending `DEBUG`
         * logs to the `console.log` function.
         */
        case LogLevel.DEBUG:
            console.log.apply(console, ["[" + now + "]  " + instance.name + ":"].concat(args));
            break;
        case LogLevel.VERBOSE:
            console.log.apply(console, ["[" + now + "]  " + instance.name + ":"].concat(args));
            break;
        case LogLevel.INFO:
            console.info.apply(console, ["[" + now + "]  " + instance.name + ":"].concat(args));
            break;
        case LogLevel.WARN:
            console.warn.apply(console, ["[" + now + "]  " + instance.name + ":"].concat(args));
            break;
        case LogLevel.ERROR:
            console.error.apply(console, ["[" + now + "]  " + instance.name + ":"].concat(args));
            break;
        default:
            throw new Error("Attempted to log a message with an invalid logType (value: " + logType + ")");
    }
};
var Logger = /** @class */ (function () {
    /**
     * Gives you an instance of a Logger to capture messages according to
     * Firebase's logging scheme.
     *
     * @param name The name that the logs will be associated with
     */
    function Logger(name) {
        this.name = name;
        /**
         * The log level of the given Logger instance.
         */
        this._logLevel = defaultLogLevel;
        /**
         * The log handler for the Logger instance.
         */
        this._logHandler = defaultLogHandler;
        /**
         * Capture the current instance for later use
         */
        exports.instances.push(this);
    }
    Object.defineProperty(Logger.prototype, "logLevel", {
        get: function () {
            return this._logLevel;
        },
        set: function (val) {
            if (!(val in LogLevel)) {
                throw new TypeError('Invalid value assigned to `logLevel`');
            }
            this._logLevel = val;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(Logger.prototype, "logHandler", {
        get: function () {
            return this._logHandler;
        },
        set: function (val) {
            if (typeof val !== 'function') {
                throw new TypeError('Value assigned to `logHandler` must be a function');
            }
            this._logHandler = val;
        },
        enumerable: true,
        configurable: true
    });
    /**
     * The functions below are all based on the `console` interface
     */
    Logger.prototype.debug = function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        this._logHandler.apply(this, [this, LogLevel.DEBUG].concat(args));
    };
    Logger.prototype.log = function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        this._logHandler.apply(this, [this, LogLevel.VERBOSE].concat(args));
    };
    Logger.prototype.info = function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        this._logHandler.apply(this, [this, LogLevel.INFO].concat(args));
    };
    Logger.prototype.warn = function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        this._logHandler.apply(this, [this, LogLevel.WARN].concat(args));
    };
    Logger.prototype.error = function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        this._logHandler.apply(this, [this, LogLevel.ERROR].concat(args));
    };
    return Logger;
}());
exports.Logger = Logger;



},{}],88:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
require("./src/polyfills/promise");
require("./src/shims/Array");
require("./src/shims/String");



},{"./src/polyfills/promise":89,"./src/shims/Array":90,"./src/shims/String":91}],89:[function(require,module,exports){
(function (global){
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var __global = (function () {
    if (typeof global !== 'undefined') {
        return global;
    }
    if (typeof window !== 'undefined') {
        return window;
    }
    if (typeof self !== 'undefined') {
        return self;
    }
    throw new Error('unable to locate global object');
})();
// Polyfill Promise
if (typeof Promise === 'undefined') {
    // HACK: TS throws an error if I attempt to use 'dot-notation'
    __global['Promise'] = Promise = require('promise-polyfill');
}



}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"promise-polyfill":120}],90:[function(require,module,exports){
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * This is the Array.prototype.find polyfill from MDN
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
 * https://tc39.github.io/ecma262/#sec-array.prototype.find
 */
if (!Array.prototype.find) {
    Object.defineProperty(Array.prototype, 'find', {
        value: function (predicate) {
            // 1. Let O be ? ToObject(this value).
            if (this == null) {
                throw new TypeError('"this" is null or not defined');
            }
            var o = Object(this);
            // 2. Let len be ? ToLength(? Get(O, "length")).
            var len = o.length >>> 0;
            // 3. If IsCallable(predicate) is false, throw a TypeError exception.
            if (typeof predicate !== 'function') {
                throw new TypeError('predicate must be a function');
            }
            // 4. If thisArg was supplied, let T be thisArg; else let T be undefined.
            var thisArg = arguments[1];
            // 5. Let k be 0.
            var k = 0;
            // 6. Repeat, while k < len
            while (k < len) {
                // a. Let Pk be ! ToString(k).
                // b. Let kValue be ? Get(O, Pk).
                // c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
                // d. If testResult is true, return kValue.
                var kValue = o[k];
                if (predicate.call(thisArg, kValue, k, o)) {
                    return kValue;
                }
                // e. Increase k by 1.
                k++;
            }
            // 7. Return undefined.
            return undefined;
        }
    });
}
/**
 * This is the Array.prototype.findIndex polyfill from MDN
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
 * https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
 */
if (!Array.prototype.findIndex) {
    Object.defineProperty(Array.prototype, 'findIndex', {
        value: function (predicate) {
            // 1. Let O be ? ToObject(this value).
            if (this == null) {
                throw new TypeError('"this" is null or not defined');
            }
            var o = Object(this);
            // 2. Let len be ? ToLength(? Get(O, "length")).
            var len = o.length >>> 0;
            // 3. If IsCallable(predicate) is false, throw a TypeError exception.
            if (typeof predicate !== 'function') {
                throw new TypeError('predicate must be a function');
            }
            // 4. If thisArg was supplied, let T be thisArg; else let T be undefined.
            var thisArg = arguments[1];
            // 5. Let k be 0.
            var k = 0;
            // 6. Repeat, while k < len
            while (k < len) {
                // a. Let Pk be ! ToString(k).
                // b. Let kValue be ? Get(O, Pk).
                // c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
                // d. If testResult is true, return k.
                var kValue = o[k];
                if (predicate.call(thisArg, kValue, k, o)) {
                    return k;
                }
                // e. Increase k by 1.
                k++;
            }
            // 7. Return -1.
            return -1;
        }
    });
}



},{}],91:[function(require,module,exports){
/**
 * Copyright 2018 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * This is the String.prototype.startsWith polyfill from MDN
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
 */
if (!String.prototype.startsWith) {
    String.prototype.startsWith = function (search, pos) {
        return this.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
    };
}



},{}],92:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var assert_1 = require("./src/assert");
exports.assert = assert_1.assert;
exports.assertionError = assert_1.assertionError;
var crypt_1 = require("./src/crypt");
exports.base64 = crypt_1.base64;
exports.base64Decode = crypt_1.base64Decode;
exports.base64Encode = crypt_1.base64Encode;
var constants_1 = require("./src/constants");
exports.CONSTANTS = constants_1.CONSTANTS;
var deepCopy_1 = require("./src/deepCopy");
exports.deepCopy = deepCopy_1.deepCopy;
exports.deepExtend = deepCopy_1.deepExtend;
exports.patchProperty = deepCopy_1.patchProperty;
var deferred_1 = require("./src/deferred");
exports.Deferred = deferred_1.Deferred;
var environment_1 = require("./src/environment");
exports.getUA = environment_1.getUA;
exports.isMobileCordova = environment_1.isMobileCordova;
exports.isNodeSdk = environment_1.isNodeSdk;
exports.isReactNative = environment_1.isReactNative;
var errors_1 = require("./src/errors");
exports.ErrorFactory = errors_1.ErrorFactory;
exports.FirebaseError = errors_1.FirebaseError;
exports.patchCapture = errors_1.patchCapture;
var json_1 = require("./src/json");
exports.jsonEval = json_1.jsonEval;
exports.stringify = json_1.stringify;
var jwt_1 = require("./src/jwt");
exports.decode = jwt_1.decode;
exports.isAdmin = jwt_1.isAdmin;
exports.issuedAtTime = jwt_1.issuedAtTime;
exports.isValidFormat = jwt_1.isValidFormat;
exports.isValidTimestamp = jwt_1.isValidTimestamp;
var obj_1 = require("./src/obj");
exports.clone = obj_1.clone;
exports.contains = obj_1.contains;
exports.every = obj_1.every;
exports.extend = obj_1.extend;
exports.findKey = obj_1.findKey;
exports.findValue = obj_1.findValue;
exports.forEach = obj_1.forEach;
exports.getAnyKey = obj_1.getAnyKey;
exports.getCount = obj_1.getCount;
exports.getValues = obj_1.getValues;
exports.isEmpty = obj_1.isEmpty;
exports.isNonNullObject = obj_1.isNonNullObject;
exports.map = obj_1.map;
exports.safeGet = obj_1.safeGet;
var query_1 = require("./src/query");
exports.querystring = query_1.querystring;
exports.querystringDecode = query_1.querystringDecode;
var sha1_1 = require("./src/sha1");
exports.Sha1 = sha1_1.Sha1;
var subscribe_1 = require("./src/subscribe");
exports.async = subscribe_1.async;
exports.createSubscribe = subscribe_1.createSubscribe;
var validation_1 = require("./src/validation");
exports.errorPrefix = validation_1.errorPrefix;
exports.validateArgCount = validation_1.validateArgCount;
exports.validateCallback = validation_1.validateCallback;
exports.validateContextObject = validation_1.validateContextObject;
exports.validateNamespace = validation_1.validateNamespace;
var utf8_1 = require("./src/utf8");
exports.stringLength = utf8_1.stringLength;
exports.stringToByteArray = utf8_1.stringToByteArray;



},{"./src/assert":93,"./src/constants":94,"./src/crypt":95,"./src/deepCopy":96,"./src/deferred":97,"./src/environment":98,"./src/errors":99,"./src/json":101,"./src/jwt":102,"./src/obj":103,"./src/query":104,"./src/sha1":105,"./src/subscribe":106,"./src/utf8":107,"./src/validation":108}],93:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var constants_1 = require("./constants");
/**
 * Throws an error if the provided assertion is falsy
 * @param {*} assertion The assertion to be tested for falsiness
 * @param {!string} message The message to display if the check fails
 */
exports.assert = function (assertion, message) {
    if (!assertion) {
        throw exports.assertionError(message);
    }
};
/**
 * Returns an Error object suitable for throwing.
 * @param {string} message
 * @return {!Error}
 */
exports.assertionError = function (message) {
    return new Error('Firebase Database (' +
        constants_1.CONSTANTS.SDK_VERSION +
        ') INTERNAL ASSERT FAILED: ' +
        message);
};



},{"./constants":94}],94:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * @fileoverview Firebase constants.  Some of these (@defines) can be overridden at compile-time.
 */
exports.CONSTANTS = {
    /**
     * @define {boolean} Whether this is the client Node.js SDK.
     */
    NODE_CLIENT: false,
    /**
     * @define {boolean} Whether this is the Admin Node.js SDK.
     */
    NODE_ADMIN: false,
    /**
     * Firebase SDK Version
     */
    SDK_VERSION: '${JSCORE_VERSION}'
};



},{}],95:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var stringToByteArray = function (str) {
    // TODO(user): Use native implementations if/when available
    var out = [], p = 0;
    for (var i = 0; i < str.length; i++) {
        var c = str.charCodeAt(i);
        if (c < 128) {
            out[p++] = c;
        }
        else if (c < 2048) {
            out[p++] = (c >> 6) | 192;
            out[p++] = (c & 63) | 128;
        }
        else if ((c & 0xfc00) == 0xd800 &&
            i + 1 < str.length &&
            (str.charCodeAt(i + 1) & 0xfc00) == 0xdc00) {
            // Surrogate Pair
            c = 0x10000 + ((c & 0x03ff) << 10) + (str.charCodeAt(++i) & 0x03ff);
            out[p++] = (c >> 18) | 240;
            out[p++] = ((c >> 12) & 63) | 128;
            out[p++] = ((c >> 6) & 63) | 128;
            out[p++] = (c & 63) | 128;
        }
        else {
            out[p++] = (c >> 12) | 224;
            out[p++] = ((c >> 6) & 63) | 128;
            out[p++] = (c & 63) | 128;
        }
    }
    return out;
};
/**
 * Turns an array of numbers into the string given by the concatenation of the
 * characters to which the numbers correspond.
 * @param {Array<number>} bytes Array of numbers representing characters.
 * @return {string} Stringification of the array.
 */
var byteArrayToString = function (bytes) {
    // TODO(user): Use native implementations if/when available
    var out = [], pos = 0, c = 0;
    while (pos < bytes.length) {
        var c1 = bytes[pos++];
        if (c1 < 128) {
            out[c++] = String.fromCharCode(c1);
        }
        else if (c1 > 191 && c1 < 224) {
            var c2 = bytes[pos++];
            out[c++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
        }
        else if (c1 > 239 && c1 < 365) {
            // Surrogate Pair
            var c2 = bytes[pos++];
            var c3 = bytes[pos++];
            var c4 = bytes[pos++];
            var u = (((c1 & 7) << 18) | ((c2 & 63) << 12) | ((c3 & 63) << 6) | (c4 & 63)) -
                0x10000;
            out[c++] = String.fromCharCode(0xd800 + (u >> 10));
            out[c++] = String.fromCharCode(0xdc00 + (u & 1023));
        }
        else {
            var c2 = bytes[pos++];
            var c3 = bytes[pos++];
            out[c++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
        }
    }
    return out.join('');
};
// Static lookup maps, lazily populated by init_()
exports.base64 = {
    /**
     * Maps bytes to characters.
     * @type {Object}
     * @private
     */
    byteToCharMap_: null,
    /**
     * Maps characters to bytes.
     * @type {Object}
     * @private
     */
    charToByteMap_: null,
    /**
     * Maps bytes to websafe characters.
     * @type {Object}
     * @private
     */
    byteToCharMapWebSafe_: null,
    /**
     * Maps websafe characters to bytes.
     * @type {Object}
     * @private
     */
    charToByteMapWebSafe_: null,
    /**
     * Our default alphabet, shared between
     * ENCODED_VALS and ENCODED_VALS_WEBSAFE
     * @type {string}
     */
    ENCODED_VALS_BASE: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789',
    /**
     * Our default alphabet. Value 64 (=) is special; it means "nothing."
     * @type {string}
     */
    get ENCODED_VALS() {
        return this.ENCODED_VALS_BASE + '+/=';
    },
    /**
     * Our websafe alphabet.
     * @type {string}
     */
    get ENCODED_VALS_WEBSAFE() {
        return this.ENCODED_VALS_BASE + '-_.';
    },
    /**
     * Whether this browser supports the atob and btoa functions. This extension
     * started at Mozilla but is now implemented by many browsers. We use the
     * ASSUME_* variables to avoid pulling in the full useragent detection library
     * but still allowing the standard per-browser compilations.
     *
     * @type {boolean}
     */
    HAS_NATIVE_SUPPORT: typeof atob === 'function',
    /**
     * Base64-encode an array of bytes.
     *
     * @param {Array<number>|Uint8Array} input An array of bytes (numbers with
     *     value in [0, 255]) to encode.
     * @param {boolean=} opt_webSafe Boolean indicating we should use the
     *     alternative alphabet.
     * @return {string} The base64 encoded string.
     */
    encodeByteArray: function (input, opt_webSafe) {
        if (!Array.isArray(input)) {
            throw Error('encodeByteArray takes an array as a parameter');
        }
        this.init_();
        var byteToCharMap = opt_webSafe
            ? this.byteToCharMapWebSafe_
            : this.byteToCharMap_;
        var output = [];
        for (var i = 0; i < input.length; i += 3) {
            var byte1 = input[i];
            var haveByte2 = i + 1 < input.length;
            var byte2 = haveByte2 ? input[i + 1] : 0;
            var haveByte3 = i + 2 < input.length;
            var byte3 = haveByte3 ? input[i + 2] : 0;
            var outByte1 = byte1 >> 2;
            var outByte2 = ((byte1 & 0x03) << 4) | (byte2 >> 4);
            var outByte3 = ((byte2 & 0x0f) << 2) | (byte3 >> 6);
            var outByte4 = byte3 & 0x3f;
            if (!haveByte3) {
                outByte4 = 64;
                if (!haveByte2) {
                    outByte3 = 64;
                }
            }
            output.push(byteToCharMap[outByte1], byteToCharMap[outByte2], byteToCharMap[outByte3], byteToCharMap[outByte4]);
        }
        return output.join('');
    },
    /**
     * Base64-encode a string.
     *
     * @param {string} input A string to encode.
     * @param {boolean=} opt_webSafe If true, we should use the
     *     alternative alphabet.
     * @return {string} The base64 encoded string.
     */
    encodeString: function (input, opt_webSafe) {
        // Shortcut for Mozilla browsers that implement
        // a native base64 encoder in the form of "btoa/atob"
        if (this.HAS_NATIVE_SUPPORT && !opt_webSafe) {
            return btoa(input);
        }
        return this.encodeByteArray(stringToByteArray(input), opt_webSafe);
    },
    /**
     * Base64-decode a string.
     *
     * @param {string} input to decode.
     * @param {boolean=} opt_webSafe True if we should use the
     *     alternative alphabet.
     * @return {string} string representing the decoded value.
     */
    decodeString: function (input, opt_webSafe) {
        // Shortcut for Mozilla browsers that implement
        // a native base64 encoder in the form of "btoa/atob"
        if (this.HAS_NATIVE_SUPPORT && !opt_webSafe) {
            return atob(input);
        }
        return byteArrayToString(this.decodeStringToByteArray(input, opt_webSafe));
    },
    /**
     * Base64-decode a string.
     *
     * In base-64 decoding, groups of four characters are converted into three
     * bytes.  If the encoder did not apply padding, the input length may not
     * be a multiple of 4.
     *
     * In this case, the last group will have fewer than 4 characters, and
     * padding will be inferred.  If the group has one or two characters, it decodes
     * to one byte.  If the group has three characters, it decodes to two bytes.
     *
     * @param {string} input Input to decode.
     * @param {boolean=} opt_webSafe True if we should use the web-safe alphabet.
     * @return {!Array<number>} bytes representing the decoded value.
     */
    decodeStringToByteArray: function (input, opt_webSafe) {
        this.init_();
        var charToByteMap = opt_webSafe
            ? this.charToByteMapWebSafe_
            : this.charToByteMap_;
        var output = [];
        for (var i = 0; i < input.length;) {
            var byte1 = charToByteMap[input.charAt(i++)];
            var haveByte2 = i < input.length;
            var byte2 = haveByte2 ? charToByteMap[input.charAt(i)] : 0;
            ++i;
            var haveByte3 = i < input.length;
            var byte3 = haveByte3 ? charToByteMap[input.charAt(i)] : 64;
            ++i;
            var haveByte4 = i < input.length;
            var byte4 = haveByte4 ? charToByteMap[input.charAt(i)] : 64;
            ++i;
            if (byte1 == null || byte2 == null || byte3 == null || byte4 == null) {
                throw Error();
            }
            var outByte1 = (byte1 << 2) | (byte2 >> 4);
            output.push(outByte1);
            if (byte3 != 64) {
                var outByte2 = ((byte2 << 4) & 0xf0) | (byte3 >> 2);
                output.push(outByte2);
                if (byte4 != 64) {
                    var outByte3 = ((byte3 << 6) & 0xc0) | byte4;
                    output.push(outByte3);
                }
            }
        }
        return output;
    },
    /**
     * Lazy static initialization function. Called before
     * accessing any of the static map variables.
     * @private
     */
    init_: function () {
        if (!this.byteToCharMap_) {
            this.byteToCharMap_ = {};
            this.charToByteMap_ = {};
            this.byteToCharMapWebSafe_ = {};
            this.charToByteMapWebSafe_ = {};
            // We want quick mappings back and forth, so we precompute two maps.
            for (var i = 0; i < this.ENCODED_VALS.length; i++) {
                this.byteToCharMap_[i] = this.ENCODED_VALS.charAt(i);
                this.charToByteMap_[this.byteToCharMap_[i]] = i;
                this.byteToCharMapWebSafe_[i] = this.ENCODED_VALS_WEBSAFE.charAt(i);
                this.charToByteMapWebSafe_[this.byteToCharMapWebSafe_[i]] = i;
                // Be forgiving when decoding and correctly decode both encodings.
                if (i >= this.ENCODED_VALS_BASE.length) {
                    this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(i)] = i;
                    this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(i)] = i;
                }
            }
        }
    }
};
/**
 * URL-safe base64 encoding
 * @param {!string} str
 * @return {!string}
 */
exports.base64Encode = function (str) {
    var utf8Bytes = stringToByteArray(str);
    return exports.base64.encodeByteArray(utf8Bytes, true);
};
/**
 * URL-safe base64 decoding
 *
 * NOTE: DO NOT use the global atob() function - it does NOT support the
 * base64Url variant encoding.
 *
 * @param {string} str To be decoded
 * @return {?string} Decoded result, if possible
 */
exports.base64Decode = function (str) {
    try {
        return exports.base64.decodeString(str, true);
    }
    catch (e) {
        console.error('base64Decode failed: ', e);
    }
    return null;
};



},{}],96:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Do a deep-copy of basic JavaScript Objects or Arrays.
 */
function deepCopy(value) {
    return deepExtend(undefined, value);
}
exports.deepCopy = deepCopy;
/**
 * Copy properties from source to target (recursively allows extension
 * of Objects and Arrays).  Scalar values in the target are over-written.
 * If target is undefined, an object of the appropriate type will be created
 * (and returned).
 *
 * We recursively copy all child properties of plain Objects in the source- so
 * that namespace- like dictionaries are merged.
 *
 * Note that the target can be a function, in which case the properties in
 * the source Object are copied onto it as static properties of the Function.
 */
function deepExtend(target, source) {
    if (!(source instanceof Object)) {
        return source;
    }
    switch (source.constructor) {
        case Date:
            // Treat Dates like scalars; if the target date object had any child
            // properties - they will be lost!
            var dateValue = source;
            return new Date(dateValue.getTime());
        case Object:
            if (target === undefined) {
                target = {};
            }
            break;
        case Array:
            // Always copy the array source and overwrite the target.
            target = [];
            break;
        default:
            // Not a plain Object - treat it as a scalar.
            return source;
    }
    for (var prop in source) {
        if (!source.hasOwnProperty(prop)) {
            continue;
        }
        target[prop] = deepExtend(target[prop], source[prop]);
    }
    return target;
}
exports.deepExtend = deepExtend;
// TODO: Really needed (for JSCompiler type checking)?
function patchProperty(obj, prop, value) {
    obj[prop] = value;
}
exports.patchProperty = patchProperty;



},{}],97:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var Deferred = /** @class */ (function () {
    function Deferred() {
        var _this = this;
        this.promise = new Promise(function (resolve, reject) {
            _this.resolve = resolve;
            _this.reject = reject;
        });
    }
    /**
     * Our API internals are not promiseified and cannot because our callback APIs have subtle expectations around
     * invoking promises inline, which Promises are forbidden to do. This method accepts an optional node-style callback
     * and returns a node-style callback which will resolve or reject the Deferred's promise.
     * @param {((?function(?(Error)): (?|undefined))| (?function(?(Error),?=): (?|undefined)))=} callback
     * @return {!function(?(Error), ?=)}
     */
    Deferred.prototype.wrapCallback = function (callback) {
        var _this = this;
        return function (error, value) {
            if (error) {
                _this.reject(error);
            }
            else {
                _this.resolve(value);
            }
            if (typeof callback === 'function') {
                // Attaching noop handler just in case developer wasn't expecting
                // promises
                _this.promise.catch(function () { });
                // Some of our callbacks don't expect a value and our own tests
                // assert that the parameter length is 1
                if (callback.length === 1) {
                    callback(error);
                }
                else {
                    callback(error, value);
                }
            }
        };
    };
    return Deferred;
}());
exports.Deferred = Deferred;



},{}],98:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var constants_1 = require("./constants");
/**
 * Returns navigator.userAgent string or '' if it's not defined.
 * @return {string} user agent string
 */
exports.getUA = function () {
    if (typeof navigator !== 'undefined' &&
        typeof navigator['userAgent'] === 'string') {
        return navigator['userAgent'];
    }
    else {
        return '';
    }
};
/**
 * Detect Cordova / PhoneGap / Ionic frameworks on a mobile device.
 *
 * Deliberately does not rely on checking `file://` URLs (as this fails PhoneGap in the Ripple emulator) nor
 * Cordova `onDeviceReady`, which would normally wait for a callback.
 *
 * @return {boolean} isMobileCordova
 */
exports.isMobileCordova = function () {
    return (typeof window !== 'undefined' &&
        !!(window['cordova'] || window['phonegap'] || window['PhoneGap']) &&
        /ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test(exports.getUA()));
};
/**
 * Detect React Native.
 *
 * @return {boolean} True if ReactNative environment is detected.
 */
exports.isReactNative = function () {
    return (typeof navigator === 'object' && navigator['product'] === 'ReactNative');
};
/**
 * Detect Node.js.
 *
 * @return {boolean} True if Node.js environment is detected.
 */
exports.isNodeSdk = function () {
    return constants_1.CONSTANTS.NODE_CLIENT === true || constants_1.CONSTANTS.NODE_ADMIN === true;
};



},{"./constants":94}],99:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var ERROR_NAME = 'FirebaseError';
var captureStackTrace = Error
    .captureStackTrace;
// Export for faking in tests
function patchCapture(captureFake) {
    var result = captureStackTrace;
    captureStackTrace = captureFake;
    return result;
}
exports.patchCapture = patchCapture;
var FirebaseError = /** @class */ (function () {
    function FirebaseError(code, message) {
        this.code = code;
        this.message = message;
        var stack;
        // We want the stack value, if implemented by Error
        if (captureStackTrace) {
            // Patches this.stack, omitted calls above ErrorFactory#create
            captureStackTrace(this, ErrorFactory.prototype.create);
        }
        else {
            var err_1 = Error.apply(this, arguments);
            this.name = ERROR_NAME;
            // Make non-enumerable getter for the property.
            Object.defineProperty(this, 'stack', {
                get: function () {
                    return err_1.stack;
                }
            });
        }
    }
    return FirebaseError;
}());
exports.FirebaseError = FirebaseError;
// Back-door inheritance
FirebaseError.prototype = Object.create(Error.prototype);
FirebaseError.prototype.constructor = FirebaseError;
FirebaseError.prototype.name = ERROR_NAME;
var ErrorFactory = /** @class */ (function () {
    function ErrorFactory(service, serviceName, errors) {
        this.service = service;
        this.serviceName = serviceName;
        this.errors = errors;
        // Matches {$name}, by default.
        this.pattern = /\{\$([^}]+)}/g;
        // empty
    }
    ErrorFactory.prototype.create = function (code, data) {
        if (data === undefined) {
            data = {};
        }
        var template = this.errors[code];
        var fullCode = this.service + '/' + code;
        var message;
        if (template === undefined) {
            message = 'Error';
        }
        else {
            message = template.replace(this.pattern, function (match, key) {
                var value = data[key];
                return value !== undefined ? value.toString() : '<' + key + '?>';
            });
        }
        // Service: Error message (service/code).
        message = this.serviceName + ': ' + message + ' (' + fullCode + ').';
        var err = new FirebaseError(fullCode, message);
        // Populate the Error object with message parts for programmatic
        // accesses (e.g., e.file).
        for (var prop in data) {
            if (!data.hasOwnProperty(prop) || prop.slice(-1) === '_') {
                continue;
            }
            err[prop] = data[prop];
        }
        return err;
    };
    return ErrorFactory;
}());
exports.ErrorFactory = ErrorFactory;



},{}],100:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
// Copyright 2011 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
 * @fileoverview Abstract cryptographic hash interface.
 *
 * See Sha1 and Md5 for sample implementations.
 *
 */
/**
 * Create a cryptographic hash instance.
 *
 * @constructor
 * @struct
 */
var Hash = /** @class */ (function () {
    function Hash() {
        /**
         * The block size for the hasher.
         * @type {number}
         */
        this.blockSize = -1;
    }
    return Hash;
}());
exports.Hash = Hash;



},{}],101:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Evaluates a JSON string into a javascript object.
 *
 * @param {string} str A string containing JSON.
 * @return {*} The javascript object representing the specified JSON.
 */
function jsonEval(str) {
    return JSON.parse(str);
}
exports.jsonEval = jsonEval;
/**
 * Returns JSON representing a javascript object.
 * @param {*} data Javascript object to be stringified.
 * @return {string} The JSON contents of the object.
 */
function stringify(data) {
    return JSON.stringify(data);
}
exports.stringify = stringify;



},{}],102:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var crypt_1 = require("./crypt");
var json_1 = require("./json");
/**
 * Decodes a Firebase auth. token into constituent parts.
 *
 * Notes:
 * - May return with invalid / incomplete claims if there's no native base64 decoding support.
 * - Doesn't check if the token is actually valid.
 *
 * @param {?string} token
 * @return {{header: *, claims: *, data: *, signature: string}}
 */
exports.decode = function (token) {
    var header = {}, claims = {}, data = {}, signature = '';
    try {
        var parts = token.split('.');
        header = json_1.jsonEval(crypt_1.base64Decode(parts[0]) || '');
        claims = json_1.jsonEval(crypt_1.base64Decode(parts[1]) || '');
        signature = parts[2];
        data = claims['d'] || {};
        delete claims['d'];
    }
    catch (e) { }
    return {
        header: header,
        claims: claims,
        data: data,
        signature: signature
    };
};
/**
 * Decodes a Firebase auth. token and checks the validity of its time-based claims. Will return true if the
 * token is within the time window authorized by the 'nbf' (not-before) and 'iat' (issued-at) claims.
 *
 * Notes:
 * - May return a false negative if there's no native base64 decoding support.
 * - Doesn't check if the token is actually valid.
 *
 * @param {?string} token
 * @return {boolean}
 */
exports.isValidTimestamp = function (token) {
    var claims = exports.decode(token).claims, now = Math.floor(new Date().getTime() / 1000), validSince, validUntil;
    if (typeof claims === 'object') {
        if (claims.hasOwnProperty('nbf')) {
            validSince = claims['nbf'];
        }
        else if (claims.hasOwnProperty('iat')) {
            validSince = claims['iat'];
        }
        if (claims.hasOwnProperty('exp')) {
            validUntil = claims['exp'];
        }
        else {
            // token will expire after 24h by default
            validUntil = validSince + 86400;
        }
    }
    return (now && validSince && validUntil && now >= validSince && now <= validUntil);
};
/**
 * Decodes a Firebase auth. token and returns its issued at time if valid, null otherwise.
 *
 * Notes:
 * - May return null if there's no native base64 decoding support.
 * - Doesn't check if the token is actually valid.
 *
 * @param {?string} token
 * @return {?number}
 */
exports.issuedAtTime = function (token) {
    var claims = exports.decode(token).claims;
    if (typeof claims === 'object' && claims.hasOwnProperty('iat')) {
        return claims['iat'];
    }
    return null;
};
/**
 * Decodes a Firebase auth. token and checks the validity of its format. Expects a valid issued-at time and non-empty
 * signature.
 *
 * Notes:
 * - May return a false negative if there's no native base64 decoding support.
 * - Doesn't check if the token is actually valid.
 *
 * @param {?string} token
 * @return {boolean}
 */
exports.isValidFormat = function (token) {
    var decoded = exports.decode(token), claims = decoded.claims;
    return (!!decoded.signature &&
        !!claims &&
        typeof claims === 'object' &&
        claims.hasOwnProperty('iat'));
};
/**
 * Attempts to peer into an auth token and determine if it's an admin auth token by looking at the claims portion.
 *
 * Notes:
 * - May return a false negative if there's no native base64 decoding support.
 * - Doesn't check if the token is actually valid.
 *
 * @param {?string} token
 * @return {boolean}
 */
exports.isAdmin = function (token) {
    var claims = exports.decode(token).claims;
    return typeof claims === 'object' && claims['admin'] === true;
};



},{"./crypt":95,"./json":101}],103:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
// See http://www.devthought.com/2012/01/18/an-object-is-not-a-hash/
exports.contains = function (obj, key) {
    return Object.prototype.hasOwnProperty.call(obj, key);
};
exports.safeGet = function (obj, key) {
    if (Object.prototype.hasOwnProperty.call(obj, key))
        return obj[key];
    // else return undefined.
};
/**
 * Enumerates the keys/values in an object, excluding keys defined on the prototype.
 *
 * @param {?Object.<K,V>} obj Object to enumerate.
 * @param {!function(K, V)} fn Function to call for each key and value.
 * @template K,V
 */
exports.forEach = function (obj, fn) {
    for (var key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key)) {
            fn(key, obj[key]);
        }
    }
};
/**
 * Copies all the (own) properties from one object to another.
 * @param {!Object} objTo
 * @param {!Object} objFrom
 * @return {!Object} objTo
 */
exports.extend = function (objTo, objFrom) {
    exports.forEach(objFrom, function (key, value) {
        objTo[key] = value;
    });
    return objTo;
};
/**
 * Returns a clone of the specified object.
 * @param {!Object} obj
 * @return {!Object} cloned obj.
 */
exports.clone = function (obj) {
    return exports.extend({}, obj);
};
/**
 * Returns true if obj has typeof "object" and is not null.  Unlike goog.isObject(), does not return true
 * for functions.
 *
 * @param obj {*} A potential object.
 * @returns {boolean} True if it's an object.
 */
exports.isNonNullObject = function (obj) {
    return typeof obj === 'object' && obj !== null;
};
exports.isEmpty = function (obj) {
    for (var key in obj) {
        return false;
    }
    return true;
};
exports.getCount = function (obj) {
    var rv = 0;
    for (var key in obj) {
        rv++;
    }
    return rv;
};
exports.map = function (obj, f, opt_obj) {
    var res = {};
    for (var key in obj) {
        res[key] = f.call(opt_obj, obj[key], key, obj);
    }
    return res;
};
exports.findKey = function (obj, fn, opt_this) {
    for (var key in obj) {
        if (fn.call(opt_this, obj[key], key, obj)) {
            return key;
        }
    }
    return undefined;
};
exports.findValue = function (obj, fn, opt_this) {
    var key = exports.findKey(obj, fn, opt_this);
    return key && obj[key];
};
exports.getAnyKey = function (obj) {
    for (var key in obj) {
        return key;
    }
};
exports.getValues = function (obj) {
    var res = [];
    var i = 0;
    for (var key in obj) {
        res[i++] = obj[key];
    }
    return res;
};
/**
 * Tests whether every key/value pair in an object pass the test implemented
 * by the provided function
 *
 * @param {?Object.<K,V>} obj Object to test.
 * @param {!function(K, V)} fn Function to call for each key and value.
 * @template K,V
 */
exports.every = function (obj, fn) {
    for (var key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key)) {
            if (!fn(key, obj[key])) {
                return false;
            }
        }
    }
    return true;
};



},{}],104:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var obj_1 = require("./obj");
/**
 * Returns a querystring-formatted string (e.g. &arg=val&arg2=val2) from a params
 * object (e.g. {arg: 'val', arg2: 'val2'})
 * Note: You must prepend it with ? when adding it to a URL.
 *
 * @param {!Object} querystringParams
 * @return {string}
 */
exports.querystring = function (querystringParams) {
    var params = [];
    obj_1.forEach(querystringParams, function (key, value) {
        if (Array.isArray(value)) {
            value.forEach(function (arrayVal) {
                params.push(encodeURIComponent(key) + '=' + encodeURIComponent(arrayVal));
            });
        }
        else {
            params.push(encodeURIComponent(key) + '=' + encodeURIComponent(value));
        }
    });
    return params.length ? '&' + params.join('&') : '';
};
/**
 * Decodes a querystring (e.g. ?arg=val&arg2=val2) into a params object (e.g. {arg: 'val', arg2: 'val2'})
 *
 * @param {string} querystring
 * @return {!Object}
 */
exports.querystringDecode = function (querystring) {
    var obj = {};
    var tokens = querystring.replace(/^\?/, '').split('&');
    tokens.forEach(function (token) {
        if (token) {
            var key = token.split('=');
            obj[key[0]] = key[1];
        }
    });
    return obj;
};



},{"./obj":103}],105:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var hash_1 = require("./hash");
/**
 * @fileoverview SHA-1 cryptographic hash.
 * Variable names follow the notation in FIPS PUB 180-3:
 * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.
 *
 * Usage:
 *   var sha1 = new sha1();
 *   sha1.update(bytes);
 *   var hash = sha1.digest();
 *
 * Performance:
 *   Chrome 23:   ~400 Mbit/s
 *   Firefox 16:  ~250 Mbit/s
 *
 */
/**
 * SHA-1 cryptographic hash constructor.
 *
 * The properties declared here are discussed in the above algorithm document.
 * @constructor
 * @extends {Hash}
 * @final
 * @struct
 */
var Sha1 = /** @class */ (function (_super) {
    tslib_1.__extends(Sha1, _super);
    function Sha1() {
        var _this = _super.call(this) || this;
        /**
         * Holds the previous values of accumulated variables a-e in the compress_
         * function.
         * @type {!Array<number>}
         * @private
         */
        _this.chain_ = [];
        /**
         * A buffer holding the partially computed hash result.
         * @type {!Array<number>}
         * @private
         */
        _this.buf_ = [];
        /**
         * An array of 80 bytes, each a part of the message to be hashed.  Referred to
         * as the message schedule in the docs.
         * @type {!Array<number>}
         * @private
         */
        _this.W_ = [];
        /**
         * Contains data needed to pad messages less than 64 bytes.
         * @type {!Array<number>}
         * @private
         */
        _this.pad_ = [];
        /**
         * @private {number}
         */
        _this.inbuf_ = 0;
        /**
         * @private {number}
         */
        _this.total_ = 0;
        _this.blockSize = 512 / 8;
        _this.pad_[0] = 128;
        for (var i = 1; i < _this.blockSize; ++i) {
            _this.pad_[i] = 0;
        }
        _this.reset();
        return _this;
    }
    Sha1.prototype.reset = function () {
        this.chain_[0] = 0x67452301;
        this.chain_[1] = 0xefcdab89;
        this.chain_[2] = 0x98badcfe;
        this.chain_[3] = 0x10325476;
        this.chain_[4] = 0xc3d2e1f0;
        this.inbuf_ = 0;
        this.total_ = 0;
    };
    /**
     * Internal compress helper function.
     * @param {!Array<number>|!Uint8Array|string} buf Block to compress.
     * @param {number=} opt_offset Offset of the block in the buffer.
     * @private
     */
    Sha1.prototype.compress_ = function (buf, opt_offset) {
        if (!opt_offset) {
            opt_offset = 0;
        }
        var W = this.W_;
        // get 16 big endian words
        if (typeof buf === 'string') {
            for (var i = 0; i < 16; i++) {
                // TODO(user): [bug 8140122] Recent versions of Safari for Mac OS and iOS
                // have a bug that turns the post-increment ++ operator into pre-increment
                // during JIT compilation.  We have code that depends heavily on SHA-1 for
                // correctness and which is affected by this bug, so I've removed all uses
                // of post-increment ++ in which the result value is used.  We can revert
                // this change once the Safari bug
                // (https://bugs.webkit.org/show_bug.cgi?id=109036) has been fixed and
                // most clients have been updated.
                W[i] =
                    (buf.charCodeAt(opt_offset) << 24) |
                        (buf.charCodeAt(opt_offset + 1) << 16) |
                        (buf.charCodeAt(opt_offset + 2) << 8) |
                        buf.charCodeAt(opt_offset + 3);
                opt_offset += 4;
            }
        }
        else {
            for (var i = 0; i < 16; i++) {
                W[i] =
                    (buf[opt_offset] << 24) |
                        (buf[opt_offset + 1] << 16) |
                        (buf[opt_offset + 2] << 8) |
                        buf[opt_offset + 3];
                opt_offset += 4;
            }
        }
        // expand to 80 words
        for (var i = 16; i < 80; i++) {
            var t = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];
            W[i] = ((t << 1) | (t >>> 31)) & 0xffffffff;
        }
        var a = this.chain_[0];
        var b = this.chain_[1];
        var c = this.chain_[2];
        var d = this.chain_[3];
        var e = this.chain_[4];
        var f, k;
        // TODO(user): Try to unroll this loop to speed up the computation.
        for (var i = 0; i < 80; i++) {
            if (i < 40) {
                if (i < 20) {
                    f = d ^ (b & (c ^ d));
                    k = 0x5a827999;
                }
                else {
                    f = b ^ c ^ d;
                    k = 0x6ed9eba1;
                }
            }
            else {
                if (i < 60) {
                    f = (b & c) | (d & (b | c));
                    k = 0x8f1bbcdc;
                }
                else {
                    f = b ^ c ^ d;
                    k = 0xca62c1d6;
                }
            }
            var t = (((a << 5) | (a >>> 27)) + f + e + k + W[i]) & 0xffffffff;
            e = d;
            d = c;
            c = ((b << 30) | (b >>> 2)) & 0xffffffff;
            b = a;
            a = t;
        }
        this.chain_[0] = (this.chain_[0] + a) & 0xffffffff;
        this.chain_[1] = (this.chain_[1] + b) & 0xffffffff;
        this.chain_[2] = (this.chain_[2] + c) & 0xffffffff;
        this.chain_[3] = (this.chain_[3] + d) & 0xffffffff;
        this.chain_[4] = (this.chain_[4] + e) & 0xffffffff;
    };
    Sha1.prototype.update = function (bytes, opt_length) {
        // TODO(johnlenz): tighten the function signature and remove this check
        if (bytes == null) {
            return;
        }
        if (opt_length === undefined) {
            opt_length = bytes.length;
        }
        var lengthMinusBlock = opt_length - this.blockSize;
        var n = 0;
        // Using local instead of member variables gives ~5% speedup on Firefox 16.
        var buf = this.buf_;
        var inbuf = this.inbuf_;
        // The outer while loop should execute at most twice.
        while (n < opt_length) {
            // When we have no data in the block to top up, we can directly process the
            // input buffer (assuming it contains sufficient data). This gives ~25%
            // speedup on Chrome 23 and ~15% speedup on Firefox 16, but requires that
            // the data is provided in large chunks (or in multiples of 64 bytes).
            if (inbuf == 0) {
                while (n <= lengthMinusBlock) {
                    this.compress_(bytes, n);
                    n += this.blockSize;
                }
            }
            if (typeof bytes === 'string') {
                while (n < opt_length) {
                    buf[inbuf] = bytes.charCodeAt(n);
                    ++inbuf;
                    ++n;
                    if (inbuf == this.blockSize) {
                        this.compress_(buf);
                        inbuf = 0;
                        // Jump to the outer loop so we use the full-block optimization.
                        break;
                    }
                }
            }
            else {
                while (n < opt_length) {
                    buf[inbuf] = bytes[n];
                    ++inbuf;
                    ++n;
                    if (inbuf == this.blockSize) {
                        this.compress_(buf);
                        inbuf = 0;
                        // Jump to the outer loop so we use the full-block optimization.
                        break;
                    }
                }
            }
        }
        this.inbuf_ = inbuf;
        this.total_ += opt_length;
    };
    /** @override */
    Sha1.prototype.digest = function () {
        var digest = [];
        var totalBits = this.total_ * 8;
        // Add pad 0x80 0x00*.
        if (this.inbuf_ < 56) {
            this.update(this.pad_, 56 - this.inbuf_);
        }
        else {
            this.update(this.pad_, this.blockSize - (this.inbuf_ - 56));
        }
        // Add # bits.
        for (var i = this.blockSize - 1; i >= 56; i--) {
            this.buf_[i] = totalBits & 255;
            totalBits /= 256; // Don't use bit-shifting here!
        }
        this.compress_(this.buf_);
        var n = 0;
        for (var i = 0; i < 5; i++) {
            for (var j = 24; j >= 0; j -= 8) {
                digest[n] = (this.chain_[i] >> j) & 255;
                ++n;
            }
        }
        return digest;
    };
    return Sha1;
}(hash_1.Hash));
exports.Sha1 = Sha1;



},{"./hash":100,"tslib":121}],106:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Helper to make a Subscribe function (just like Promise helps make a
 * Thenable).
 *
 * @param executor Function which can make calls to a single Observer
 *     as a proxy.
 * @param onNoObservers Callback when count of Observers goes to zero.
 */
function createSubscribe(executor, onNoObservers) {
    var proxy = new ObserverProxy(executor, onNoObservers);
    return proxy.subscribe.bind(proxy);
}
exports.createSubscribe = createSubscribe;
/**
 * Implement fan-out for any number of Observers attached via a subscribe
 * function.
 */
var ObserverProxy = /** @class */ (function () {
    /**
     * @param executor Function which can make calls to a single Observer
     *     as a proxy.
     * @param onNoObservers Callback when count of Observers goes to zero.
     */
    function ObserverProxy(executor, onNoObservers) {
        var _this = this;
        this.observers = [];
        this.unsubscribes = [];
        this.observerCount = 0;
        // Micro-task scheduling by calling task.then().
        this.task = Promise.resolve();
        this.finalized = false;
        this.onNoObservers = onNoObservers;
        // Call the executor asynchronously so subscribers that are called
        // synchronously after the creation of the subscribe function
        // can still receive the very first value generated in the executor.
        this.task
            .then(function () {
            executor(_this);
        })
            .catch(function (e) {
            _this.error(e);
        });
    }
    ObserverProxy.prototype.next = function (value) {
        this.forEachObserver(function (observer) {
            observer.next(value);
        });
    };
    ObserverProxy.prototype.error = function (error) {
        this.forEachObserver(function (observer) {
            observer.error(error);
        });
        this.close(error);
    };
    ObserverProxy.prototype.complete = function () {
        this.forEachObserver(function (observer) {
            observer.complete();
        });
        this.close();
    };
    /**
     * Subscribe function that can be used to add an Observer to the fan-out list.
     *
     * - We require that no event is sent to a subscriber sychronously to their
     *   call to subscribe().
     */
    ObserverProxy.prototype.subscribe = function (nextOrObserver, error, complete) {
        var _this = this;
        var observer;
        if (nextOrObserver === undefined &&
            error === undefined &&
            complete === undefined) {
            throw new Error('Missing Observer.');
        }
        // Assemble an Observer object when passed as callback functions.
        if (implementsAnyMethods(nextOrObserver, ['next', 'error', 'complete'])) {
            observer = nextOrObserver;
        }
        else {
            observer = {
                next: nextOrObserver,
                error: error,
                complete: complete
            };
        }
        if (observer.next === undefined) {
            observer.next = noop;
        }
        if (observer.error === undefined) {
            observer.error = noop;
        }
        if (observer.complete === undefined) {
            observer.complete = noop;
        }
        var unsub = this.unsubscribeOne.bind(this, this.observers.length);
        // Attempt to subscribe to a terminated Observable - we
        // just respond to the Observer with the final error or complete
        // event.
        if (this.finalized) {
            this.task.then(function () {
                try {
                    if (_this.finalError) {
                        observer.error(_this.finalError);
                    }
                    else {
                        observer.complete();
                    }
                }
                catch (e) {
                    // nothing
                }
                return;
            });
        }
        this.observers.push(observer);
        return unsub;
    };
    // Unsubscribe is synchronous - we guarantee that no events are sent to
    // any unsubscribed Observer.
    ObserverProxy.prototype.unsubscribeOne = function (i) {
        if (this.observers === undefined || this.observers[i] === undefined) {
            return;
        }
        delete this.observers[i];
        this.observerCount -= 1;
        if (this.observerCount === 0 && this.onNoObservers !== undefined) {
            this.onNoObservers(this);
        }
    };
    ObserverProxy.prototype.forEachObserver = function (fn) {
        if (this.finalized) {
            // Already closed by previous event....just eat the additional values.
            return;
        }
        // Since sendOne calls asynchronously - there is no chance that
        // this.observers will become undefined.
        for (var i = 0; i < this.observers.length; i++) {
            this.sendOne(i, fn);
        }
    };
    // Call the Observer via one of it's callback function. We are careful to
    // confirm that the observe has not been unsubscribed since this asynchronous
    // function had been queued.
    ObserverProxy.prototype.sendOne = function (i, fn) {
        var _this = this;
        // Execute the callback asynchronously
        this.task.then(function () {
            if (_this.observers !== undefined && _this.observers[i] !== undefined) {
                try {
                    fn(_this.observers[i]);
                }
                catch (e) {
                    // Ignore exceptions raised in Observers or missing methods of an
                    // Observer.
                    // Log error to console. b/31404806
                    if (typeof console !== 'undefined' && console.error) {
                        console.error(e);
                    }
                }
            }
        });
    };
    ObserverProxy.prototype.close = function (err) {
        var _this = this;
        if (this.finalized) {
            return;
        }
        this.finalized = true;
        if (err !== undefined) {
            this.finalError = err;
        }
        // Proxy is no longer needed - garbage collect references
        this.task.then(function () {
            _this.observers = undefined;
            _this.onNoObservers = undefined;
        });
    };
    return ObserverProxy;
}());
/** Turn synchronous function into one called asynchronously. */
function async(fn, onError) {
    return function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        Promise.resolve(true)
            .then(function () {
            fn.apply(void 0, args);
        })
            .catch(function (error) {
            if (onError) {
                onError(error);
            }
        });
    };
}
exports.async = async;
/**
 * Return true if the object passed in implements any of the named methods.
 */
function implementsAnyMethods(obj, methods) {
    if (typeof obj !== 'object' || obj === null) {
        return false;
    }
    for (var _i = 0, methods_1 = methods; _i < methods_1.length; _i++) {
        var method = methods_1[_i];
        if (method in obj && typeof obj[method] === 'function') {
            return true;
        }
    }
    return false;
}
function noop() {
    // do nothing
}



},{}],107:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var assert_1 = require("./assert");
// Code originally came from goog.crypt.stringToUtf8ByteArray, but for some reason they
// automatically replaced '\r\n' with '\n', and they didn't handle surrogate pairs,
// so it's been modified.
// Note that not all Unicode characters appear as single characters in JavaScript strings.
// fromCharCode returns the UTF-16 encoding of a character - so some Unicode characters
// use 2 characters in Javascript.  All 4-byte UTF-8 characters begin with a first
// character in the range 0xD800 - 0xDBFF (the first character of a so-called surrogate
// pair).
// See http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.3
/**
 * @param {string} str
 * @return {Array}
 */
exports.stringToByteArray = function (str) {
    var out = [], p = 0;
    for (var i = 0; i < str.length; i++) {
        var c = str.charCodeAt(i);
        // Is this the lead surrogate in a surrogate pair?
        if (c >= 0xd800 && c <= 0xdbff) {
            var high = c - 0xd800; // the high 10 bits.
            i++;
            assert_1.assert(i < str.length, 'Surrogate pair missing trail surrogate.');
            var low = str.charCodeAt(i) - 0xdc00; // the low 10 bits.
            c = 0x10000 + (high << 10) + low;
        }
        if (c < 128) {
            out[p++] = c;
        }
        else if (c < 2048) {
            out[p++] = (c >> 6) | 192;
            out[p++] = (c & 63) | 128;
        }
        else if (c < 65536) {
            out[p++] = (c >> 12) | 224;
            out[p++] = ((c >> 6) & 63) | 128;
            out[p++] = (c & 63) | 128;
        }
        else {
            out[p++] = (c >> 18) | 240;
            out[p++] = ((c >> 12) & 63) | 128;
            out[p++] = ((c >> 6) & 63) | 128;
            out[p++] = (c & 63) | 128;
        }
    }
    return out;
};
/**
 * Calculate length without actually converting; useful for doing cheaper validation.
 * @param {string} str
 * @return {number}
 */
exports.stringLength = function (str) {
    var p = 0;
    for (var i = 0; i < str.length; i++) {
        var c = str.charCodeAt(i);
        if (c < 128) {
            p++;
        }
        else if (c < 2048) {
            p += 2;
        }
        else if (c >= 0xd800 && c <= 0xdbff) {
            // Lead surrogate of a surrogate pair.  The pair together will take 4 bytes to represent.
            p += 4;
            i++; // skip trail surrogate.
        }
        else {
            p += 3;
        }
    }
    return p;
};



},{"./assert":93}],108:[function(require,module,exports){
"use strict";
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Check to make sure the appropriate number of arguments are provided for a public function.
 * Throws an error if it fails.
 *
 * @param {!string} fnName The function name
 * @param {!number} minCount The minimum number of arguments to allow for the function call
 * @param {!number} maxCount The maximum number of argument to allow for the function call
 * @param {!number} argCount The actual number of arguments provided.
 */
exports.validateArgCount = function (fnName, minCount, maxCount, argCount) {
    var argError;
    if (argCount < minCount) {
        argError = 'at least ' + minCount;
    }
    else if (argCount > maxCount) {
        argError = maxCount === 0 ? 'none' : 'no more than ' + maxCount;
    }
    if (argError) {
        var error = fnName +
            ' failed: Was called with ' +
            argCount +
            (argCount === 1 ? ' argument.' : ' arguments.') +
            ' Expects ' +
            argError +
            '.';
        throw new Error(error);
    }
};
/**
 * Generates a string to prefix an error message about failed argument validation
 *
 * @param {!string} fnName The function name
 * @param {!number} argumentNumber The index of the argument
 * @param {boolean} optional Whether or not the argument is optional
 * @return {!string} The prefix to add to the error thrown for validation.
 */
function errorPrefix(fnName, argumentNumber, optional) {
    var argName = '';
    switch (argumentNumber) {
        case 1:
            argName = optional ? 'first' : 'First';
            break;
        case 2:
            argName = optional ? 'second' : 'Second';
            break;
        case 3:
            argName = optional ? 'third' : 'Third';
            break;
        case 4:
            argName = optional ? 'fourth' : 'Fourth';
            break;
        default:
            throw new Error('errorPrefix called with argumentNumber > 4.  Need to update it?');
    }
    var error = fnName + ' failed: ';
    error += argName + ' argument ';
    return error;
}
exports.errorPrefix = errorPrefix;
/**
 * @param {!string} fnName
 * @param {!number} argumentNumber
 * @param {!string} namespace
 * @param {boolean} optional
 */
function validateNamespace(fnName, argumentNumber, namespace, optional) {
    if (optional && !namespace)
        return;
    if (typeof namespace !== 'string') {
        //TODO: I should do more validation here. We only allow certain chars in namespaces.
        throw new Error(errorPrefix(fnName, argumentNumber, optional) +
            'must be a valid firebase namespace.');
    }
}
exports.validateNamespace = validateNamespace;
function validateCallback(fnName, argumentNumber, callback, optional) {
    if (optional && !callback)
        return;
    if (typeof callback !== 'function')
        throw new Error(errorPrefix(fnName, argumentNumber, optional) +
            'must be a valid function.');
}
exports.validateCallback = validateCallback;
function validateContextObject(fnName, argumentNumber, context, optional) {
    if (optional && !context)
        return;
    if (typeof context !== 'object' || context === null)
        throw new Error(errorPrefix(fnName, argumentNumber, optional) +
            'must be a valid context object.');
}
exports.validateContextObject = validateContextObject;



},{}],109:[function(require,module,exports){
/* global AFRAME */
var styleParser = AFRAME.utils.styleParser;

if (typeof AFRAME === 'undefined') {
  throw new Error('Component attempted to register before AFRAME was available.');
}

AFRAME.registerComponent('event-set', {
  schema: {
    default: '',
    parse: function (value) {
      var convertedObj;
      var hyphened;
      var key;
      var obj;
      obj = styleParser.parse(value);
      // Convert camelCase keys from styleParser to hyphen.
      convertedObj = {};
      for (key in obj) {
        hyphened = key.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
        convertedObj[hyphened] = obj[key];
      }
      return convertedObj;
    }
  },

  multiple: true,

  init: function () {
    this.eventHandler = null;
    this.eventName = null;
  },

  update: function (oldData) {
    this.removeEventListener();
    this.updateEventListener();
    this.addEventListener();
  },

  remove: function () {
    this.removeEventListener();
  },

  pause: function () {
    this.removeEventListener();
  },

  play: function () {
    this.addEventListener();
  },

  /**
   * Update source-of-truth event listener registry.
   * Does not actually attach event listeners yet.
   */
  updateEventListener: function () {
    var data = this.data;
    var el = this.el;
    var event;
    var target;
    var targetEl;

    // Set event listener using `_event`.
    event = data._event || this.id;
    target = data._target;
    delete data._event;
    delete data._target;

    // Decide the target to `setAttribute` on.
    targetEl = target ? el.sceneEl.querySelector(target) : el;

    this.eventName = event;
    this.eventHandler = function handler () {
      var propName;
      // Set attributes.
      for (propName in data) {
        AFRAME.utils.entity.setComponentProperty.call(this, targetEl, propName,
                                                      data[propName]);
      }
    };
  },

  addEventListener: function () {
    this.el.addEventListener(this.eventName, this.eventHandler);
  },

  removeEventListener: function () {
    this.el.removeEventListener(this.eventName, this.eventHandler);
  }
});

},{}],110:[function(require,module,exports){
/******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};

/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {

/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId])
/******/ 			return installedModules[moduleId].exports;

/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			exports: {},
/******/ 			id: moduleId,
/******/ 			loaded: false
/******/ 		};

/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);

/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}


/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";

/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; /**
	                                                                                                                                                                                                                                                                               * A shader to render HTML DOM Element
	                                                                                                                                                                                                                                                                               * Inspired by @scenevr's `htmltexture-component`
	                                                                                                                                                                                                                                                                               * @see https://github.com/scenevr/htmltexture-component
	                                                                                                                                                                                                                                                                               */

	var _core = __webpack_require__(1);

	var _core2 = _interopRequireDefault(_core);

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

	if (typeof AFRAME === 'undefined') {
	  throw 'Component attempted to register before AFRAME was available.';
	}

	/* get util from AFRAME */
	var debug = AFRAME.utils.debug;
	// debug.enable('shader:html:*')

	debug.enable('shader:html:warn');
	var warn = debug('shader:html:warn');
	var log = debug('shader:html:debug');

	/* create error message */
	function createError(err, target) {
	  return { status: 'error', target: target, message: err, timestamp: Date.now() };
	}

	AFRAME.registerShader('html', {

	  /**
	   * For material component:
	   * @see https://github.com/aframevr/aframe/blob/60d198ef8e2bfbc57a13511ae5fca7b62e01691b/src/components/material.js
	   * For example of `registerShader`:
	   * @see https://github.com/aframevr/aframe/blob/41a50cd5ac65e462120ecc2e5091f5daefe3bd1e/src/shaders/flat.js
	   * For MeshBasicMaterial
	   * @see http://threejs.org/docs/#Reference/Materials/MeshBasicMaterial
	   */

	  schema: {

	    /* For material */
	    color: { type: 'color' },
	    fog: { default: true },

	    /* For texuture */
	    target: { default: null },
	    debug: { default: null },
	    fps: { type: 'number', default: 0 },
	    width: { default: null },
	    height: { default: null },
	    ratio: { default: null }

	  },

	  /**
	   * Initialize material. Called once.
	   * @protected
	   */
	  init: function init(data) {
	    log('init', data);
	    this.__cnv = document.createElement('canvas');
	    this.__cnv.width = 2;
	    this.__cnv.height = 2;
	    this.__ctx = this.__cnv.getContext('2d');
	    this.__texture = new THREE.Texture(this.__cnv);
	    this.__reset();
	    this.material = new THREE.MeshBasicMaterial({ map: this.__texture });
	    this.el.sceneEl.addBehavior(this);
	    return this.material;
	  },


	  /**
	   * Update or create material.
	   * @param {object|null} oldData
	   */
	  update: function update(oldData) {
	    log('update', oldData);
	    this.__updateMaterial(oldData);
	    this.__updateTexture(oldData);
	    return this.material;
	  },


	  /**
	   * Called on each scene tick.
	   * @protected
	   */
	  tick: function tick(t) {

	    if (this.__paused || !this.__target || !this.__nextTime) {
	      return;
	    }

	    var now = Date.now();
	    if (now > this.__nextTime) {
	      this.__render();
	    }
	  },


	  /*================================
	  =            material            =
	  ================================*/

	  /**
	   * Updating existing material.
	   * @param {object} data - Material component data.
	   */
	  __updateMaterial: function __updateMaterial(data) {
	    var material = this.material;

	    var newData = this.__getMaterialData(data);
	    Object.keys(newData).forEach(function (key) {
	      material[key] = newData[key];
	    });
	  },


	  /**
	   * Builds and normalize material data, normalizing stuff along the way.
	   * @param {Object} data - Material data.
	   * @return {Object} data - Processed material data.
	   */
	  __getMaterialData: function __getMaterialData(data) {
	    return {
	      fog: data.fog,
	      color: new THREE.Color(data.color)
	    };
	  },


	  /*==============================
	  =            texure            =
	  ==============================*/

	  /**
	   * set texure
	   * @private
	   * @param {Object} data
	   * @property {string} status - success / error
	   * @property {string} target - target url
	   * @property {DOM Element} targetEl - target
	   * @property {Date} timestamp - created at the texure
	   */

	  __setTexure: function __setTexure(data) {
	    log('__setTexure', data);
	    if (data.status === 'error') {
	      warn('Error: ' + data.message + '\ntarget: ' + data.target);
	      this.__reset();
	    } else if (data.status === 'success' && data.target !== this.__textureSrc) {
	      /* Texture added or changed */
	      this.__ready(data);
	    }
	  },


	  /**
	   * Update or create texure.
	   * @param {Object} data - Material component data.
	   */
	  __updateTexture: function __updateTexture(data) {
	    var _this = this;

	    var target = data.target,
	        fps = data.fps,
	        width = data.width,
	        height = data.height,
	        ratio = data.ratio;

	    this.__width = width || this.schema.width.default;
	    this.__height = height || this.schema.height.default;

	    /* debug */
	    var resetDebug = function resetDebug() {
	      if (_this.__debugEl) {
	        _this.__debugEl.innerHTML = '';
	        _this.__debugEl = _this.schema.debug.default;
	      }
	    };
	    if (data.debug) {
	      var el = this.__validateAndGetQuerySelector(data.debug);
	      if (el && !el.error) {
	        this.__debugEl = el;
	      } else resetDebug();
	    } else resetDebug();

	    /* ratio */
	    if (ratio && ratio === 'width' || ratio === 'height') {
	      this.__ratio = ratio;
	    } else {
	      this.__ratio = this.schema.ratio.default;
	    }

	    /* fps */
	    if (fps) {
	      if (this.__fps > 0) {
	        this.__fps = fps;
	      } else if (fps === -1) {
	        /* render only once */
	        this.__fps = this.schema.fps.default;
	        if (this.__target) {
	          this.__render();
	        }
	        /* set attribute */
	        var material = Object.assign({}, this.el.getAttribute('material'));
	        delete material.fps;
	        this.el.setAttribute('material', material);
	      } else {
	        this.__fps = fps;
	        if (this.__target) {
	          this.play();
	          this.__render();
	        }
	      }
	    } else {
	      if (this.__fps > 0) {
	        this.pause();
	      } else {
	        this.__fps = this.schema.fps.default;
	      }
	    }

	    /* target */
	    if (target) {
	      if (target === this.__target) {
	        return;
	      }
	      this.__target = target;
	      // return
	      this.__validateSrc(target, this.__setTexure.bind(this));
	    } else {
	      /* Texture removed */
	      this.__reset();
	    }
	  },


	  /*=============================================
	  =            varidation for texure            =
	  =============================================*/

	  /**
	   * varidate src
	   * @private
	   * @param {string} target - dom selector
	   * @param {Function} cb - callback
	   */
	  __validateSrc: function __validateSrc(target, cb) {

	    var message = void 0;

	    /* check if target is a query selector */
	    var el = this.__validateAndGetQuerySelector(target);
	    if (!el || (typeof el === 'undefined' ? 'undefined' : _typeof(el)) !== 'object') {
	      return;
	    }
	    if (el.error) {
	      message = el.error;
	    } else {
	      var tagName = el.tagName.toLowerCase();
	      if (tagName === 'img' || tagName === 'video') {
	        message = 'For <' + tagName + '> element, please use `shader:flat`';
	      } else {
	        cb({ status: 'success', target: target, targetEl: el, timestamp: Date.now() });
	      }
	    }

	    /* if there is message, create error data */
	    if (message) {
	      var err = createError(message, target);
	      cb(err);
	    }
	  },


	  /**
	   * Query and validate a query selector,
	   *
	   * @param  {string} selector - DOM selector.
	   * @return {object} Selected DOM element | error message object.
	   */
	  __validateAndGetQuerySelector: function __validateAndGetQuerySelector(selector) {
	    try {
	      var el = document.querySelector(selector);
	      if (!el) {
	        return { error: 'No element was found matching the selector' };
	      }
	      return el;
	    } catch (e) {
	      // Capture exception if it's not a valid selector.
	      return { error: 'no valid selector' };
	    }
	  },


	  /*================================
	  =            playback            =
	  ================================*/

	  /**
	   * Pause video
	   * @public
	   */
	  pause: function pause() {
	    log('pause');
	    this.__paused = true;
	    this.__nextTime = null;
	  },


	  /**
	   * Play video
	   * @public
	   */
	  play: function play() {
	    log('play');
	    this.__paused = false;
	  },


	  /**
	   * Toggle playback. play if paused and pause if played.
	   * @public
	   */

	  togglePlayback: function togglePlayback() {
	    if (this.paused()) {
	      this.play();
	    } else {
	      this.pause();
	    }
	  },


	  /**
	   * Return if the playback is paused.
	   * @public
	   * @return {boolean}
	   */
	  paused: function paused() {
	    return this.__paused;
	  },


	  /*==============================
	   =            canvas            =
	   ==============================*/

	  /**
	   * clear canvas
	   * @private
	   */
	  __clearCanvas: function __clearCanvas() {
	    if (!this.__ctx || !this.__texture) {
	      return;
	    }
	    this.__ctx.clearRect(0, 0, this.__width, this.__height);
	    this.__texture.needsUpdate = true;
	  },


	  /**
	   * draw
	   * @private
	   */
	  __draw: function __draw(canvas) {
	    log('__draw');
	    if (!this.__ctx || !this.__texture) {
	      return;
	    }
	    var ratio = canvas.width / canvas.height;
	    var cnvW = this.__cnv.width = THREE.Math.nearestPowerOfTwo(canvas.width);
	    var cnvH = this.__cnv.height = THREE.Math.nearestPowerOfTwo(canvas.height);
	    this.__ctx.drawImage(canvas, 0, 0, cnvW, cnvH);
	    this.__texture.needsUpdate = true;
	    if (this.__ratio) {
	      /* change size */
	      var _el$getObject3D$geome = this.el.getObject3D('mesh').geometry.metadata.parameters,
	          width = _el$getObject3D$geome.width,
	          height = _el$getObject3D$geome.height;

	      this.el.setAttribute('geometry', Object.assign({}, this.el.getAttribute('geometry'), {
	        width: this.__ratio === 'width' ? width : height * ratio,
	        height: this.__ratio === 'width' ? width / ratio : height
	      }));
	    }

	    /* append if debug element exists */
	    if (this.__debugEl) {
	      this.__debugEl.innerHTML = '';
	      this.__debugEl.appendChild(canvas);
	    }

	    /* setup next tick */
	    this.__setNextTick();
	  },


	  /**
	   * render
	   * @private
	   */
	  __render: function __render() {
	    this.__nextTime = null;
	    if (!this.__targetEl) {
	      return;
	    }

	    var _targetEl$getBoundin = this.__targetEl.getBoundingClientRect(),
	        width = _targetEl$getBoundin.width,
	        height = _targetEl$getBoundin.height;

	    (0, _core2.default)(this.__targetEl, {
	      background: undefined,
	      width: this.__width || width,
	      height: this.__height || height,
	      onrendered: this.__draw.bind(this)
	    });
	  },


	  /**
	   * get next time to draw
	   * @private
	   */
	  __setNextTick: function __setNextTick() {
	    if (this.__fps > 0) {
	      this.__nextTime = Date.now() + 1000 / this.__fps;
	    }
	  },


	  /*============================
	  =            ready           =
	  ============================*/

	  /**
	   * setup html animation and play if autoplay is true
	   * @private
	   * @property {string} target - target url
	   * @property {DOM Element} targetEl - target
	   */
	  __ready: function __ready(_ref) {
	    var target = _ref.target,
	        targetEl = _ref.targetEl;

	    log('__ready');
	    this.__target = target;
	    this.__targetEl = targetEl;
	    this.play();
	    this.__render();
	  },


	  /*=============================
	  =            reset            =
	  =============================*/

	  /**
	   * @private
	   */

	  __reset: function __reset() {
	    this.pause();
	    this.__clearCanvas();
	    this.__target = null;
	    this.__targetEl = null;
	    this.__debugEl = null;
	  }
	});

/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {

	var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;'use strict';

	var Support = __webpack_require__(2);
	var CanvasRenderer = __webpack_require__(3);
	var ImageLoader = __webpack_require__(9);
	var NodeParser = __webpack_require__(21);
	var NodeContainer = __webpack_require__(24);
	var log = __webpack_require__(5);
	var utils = __webpack_require__(12);
	var createWindowClone = __webpack_require__(16);
	var loadUrlDocument = __webpack_require__(14).loadUrlDocument;
	var getBounds = utils.getBounds;

	var html2canvasNodeAttribute = "data-html2canvas-node";
	var html2canvasCloneIndex = 0;

	function html2canvas(nodeList, options) {
	    var index = html2canvasCloneIndex++;
	    options = options || {};
	    if (options.logging) {
	        log.options.logging = true;
	        log.options.start = Date.now();
	    }

	    options.async = typeof options.async === "undefined" ? true : options.async;
	    options.allowTaint = typeof options.allowTaint === "undefined" ? false : options.allowTaint;
	    options.removeContainer = typeof options.removeContainer === "undefined" ? true : options.removeContainer;
	    options.javascriptEnabled = typeof options.javascriptEnabled === "undefined" ? false : options.javascriptEnabled;
	    options.imageTimeout = typeof options.imageTimeout === "undefined" ? 10000 : options.imageTimeout;
	    options.renderer = typeof options.renderer === "function" ? options.renderer : CanvasRenderer;
	    options.strict = !!options.strict;

	    var width = options.width || 512;
	    var height = options.height || 512;

	    return renderNode(nodeList, width, height).then(function (canvas) {
	        options.onrendered(canvas);
	    });
	}

	html2canvas.CanvasRenderer = CanvasRenderer;
	html2canvas.NodeContainer = NodeContainer;
	html2canvas.log = log;
	html2canvas.utils = utils;

	var html2canvasExport = typeof document === "undefined" || typeof Object.create !== "function" || typeof document.createElement("canvas").getContext !== "function" ? function () {
	    return Promise.reject("No canvas support");
	} : html2canvas;

	module.exports = html2canvasExport;

	if (true) {
	    !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = function () {
	        return html2canvasExport;
	    }.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__), __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
	}

	function renderDocument(document, options, windowWidth, windowHeight, html2canvasIndex) {
	    return createWindowClone(document, document, windowWidth, windowHeight, options, document.defaultView.pageXOffset, document.defaultView.pageYOffset).then(function (container) {
	        log("Document cloned");
	        var attributeName = html2canvasNodeAttribute + html2canvasIndex;
	        var selector = "[" + attributeName + "='" + html2canvasIndex + "']";
	        document.querySelector(selector).removeAttribute(attributeName);
	        var clonedWindow = container.contentWindow;
	        var node = clonedWindow.document.querySelector(selector);
	        var oncloneHandler = typeof options.onclone === "function" ? Promise.resolve(options.onclone(clonedWindow.document)) : Promise.resolve(true);
	        return oncloneHandler.then(function () {
	            return renderWindow(node, container, options, windowWidth, windowHeight);
	        });
	    });
	}

	function renderNode(node, width, height) {
	    var support = new Support(node.ownerDocument);
	    var imageLoader = new ImageLoader({
	        useCORS: true
	    }, support);
	    var options = {
	        renderer: html2canvas.CanvasRenderer
	    };
	    var bounds = getBounds(node);
	    var renderer = new options.renderer(width, height, imageLoader, options, document);
	    var parser = new NodeParser(node, renderer, support, imageLoader, options);
	    return parser.ready.then(function () {
	        return renderer.canvas;
	    });
	}

	function renderWindow(node, container, options, windowWidth, windowHeight) {
	    var clonedWindow = container.contentWindow;
	    var support = new Support(clonedWindow.document);
	    var imageLoader = new ImageLoader(options, support);
	    var bounds = getBounds(node);
	    var width = options.type === "view" ? windowWidth : documentWidth(clonedWindow.document);
	    var height = options.type === "view" ? windowHeight : documentHeight(clonedWindow.document);
	    var renderer = new options.renderer(width, height, imageLoader, options, document);
	    var parser = new NodeParser(node, renderer, support, imageLoader, options);
	    return parser.ready.then(function () {
	        log("Finished rendering");
	        var canvas;

	        if (options.type === "view") {
	            canvas = crop(renderer.canvas, { width: renderer.canvas.width, height: renderer.canvas.height, top: 0, left: 0, x: 0, y: 0 });
	        } else if (node === clonedWindow.document.body || node === clonedWindow.document.documentElement || options.canvas != null) {
	            canvas = renderer.canvas;
	        } else {
	            canvas = crop(renderer.canvas, { width: options.width != null ? options.width : bounds.width, height: options.height != null ? options.height : bounds.height, top: bounds.top, left: bounds.left, x: 0, y: 0 });
	        }

	        cleanupContainer(container, options);
	        return canvas;
	    });
	}

	function cleanupContainer(container, options) {
	    if (options.removeContainer) {
	        container.parentNode.removeChild(container);
	        log("Cleaned up container");
	    }
	}

	function crop(canvas, bounds) {
	    var croppedCanvas = document.createElement("canvas");
	    var x1 = Math.min(canvas.width - 1, Math.max(0, bounds.left));
	    var x2 = Math.min(canvas.width, Math.max(1, bounds.left + bounds.width));
	    var y1 = Math.min(canvas.height - 1, Math.max(0, bounds.top));
	    var y2 = Math.min(canvas.height, Math.max(1, bounds.top + bounds.height));
	    croppedCanvas.width = bounds.width;
	    croppedCanvas.height = bounds.height;
	    var width = x2 - x1;
	    var height = y2 - y1;
	    log("Cropping canvas at:", "left:", bounds.left, "top:", bounds.top, "width:", width, "height:", height);
	    log("Resulting crop with width", bounds.width, "and height", bounds.height, "with x", x1, "and y", y1);
	    croppedCanvas.getContext("2d").drawImage(canvas, x1, y1, width, height, bounds.x, bounds.y, width, height);
	    return croppedCanvas;
	}

	function documentWidth(doc) {
	    return Math.max(Math.max(doc.body.scrollWidth, doc.documentElement.scrollWidth), Math.max(doc.body.offsetWidth, doc.documentElement.offsetWidth), Math.max(doc.body.clientWidth, doc.documentElement.clientWidth));
	}

	function documentHeight(doc) {
	    return Math.max(Math.max(doc.body.scrollHeight, doc.documentElement.scrollHeight), Math.max(doc.body.offsetHeight, doc.documentElement.offsetHeight), Math.max(doc.body.clientHeight, doc.documentElement.clientHeight));
	}

	function absoluteUrl(url) {
	    var link = document.createElement("a");
	    link.href = url;
	    link.href = link.href;
	    return link;
	}

/***/ }),
/* 2 */
/***/ (function(module, exports) {

	"use strict";

	function Support(document) {
	    this.rangeBounds = this.testRangeBounds(document);
	    this.cors = this.testCORS();
	    this.svg = this.testSVG();
	}

	Support.prototype.testRangeBounds = function (document) {
	    var range,
	        testElement,
	        rangeBounds,
	        rangeHeight,
	        support = false;

	    if (document.createRange) {
	        range = document.createRange();
	        if (range.getBoundingClientRect) {
	            testElement = document.createElement('boundtest');
	            testElement.style.height = "123px";
	            testElement.style.display = "block";
	            document.body.appendChild(testElement);

	            range.selectNode(testElement);
	            rangeBounds = range.getBoundingClientRect();
	            rangeHeight = rangeBounds.height;

	            if (rangeHeight === 123) {
	                support = true;
	            }
	            document.body.removeChild(testElement);
	        }
	    }

	    return support;
	};

	Support.prototype.testCORS = function () {
	    return typeof new Image().crossOrigin !== "undefined";
	};

	Support.prototype.testSVG = function () {
	    var img = new Image();
	    var canvas = document.createElement("canvas");
	    var ctx = canvas.getContext("2d");
	    img.src = "data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'></svg>";

	    try {
	        ctx.drawImage(img, 0, 0);
	        canvas.toDataURL();
	    } catch (e) {
	        return false;
	    }
	    return true;
	};

	module.exports = Support;

/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

	var Renderer = __webpack_require__(4);
	var LinearGradientContainer = __webpack_require__(6);
	var log = __webpack_require__(5);

	function CanvasRenderer(width, height) {
	    Renderer.apply(this, arguments);
	    this.canvas = this.options.canvas || this.document.createElement("canvas");
	    if (!this.options.canvas) {
	        this.canvas.width = width;
	        this.canvas.height = height;
	    }
	    this.ctx = this.canvas.getContext("2d");
	    this.taintCtx = this.document.createElement("canvas").getContext("2d");
	    this.ctx.textBaseline = "bottom";
	    this.variables = {};
	    log("Initialized CanvasRenderer with size", width, "x", height);
	}

	CanvasRenderer.prototype = Object.create(Renderer.prototype);

	CanvasRenderer.prototype.setFillStyle = function (fillStyle) {
	    this.ctx.fillStyle = (typeof fillStyle === 'undefined' ? 'undefined' : _typeof(fillStyle)) === "object" && !!fillStyle.isColor ? fillStyle.toString() : fillStyle;
	    return this.ctx;
	};

	CanvasRenderer.prototype.rectangle = function (left, top, width, height, color) {
	    this.setFillStyle(color).fillRect(left, top, width, height);
	};

	CanvasRenderer.prototype.circle = function (left, top, size, color) {
	    this.setFillStyle(color);
	    this.ctx.beginPath();
	    this.ctx.arc(left + size / 2, top + size / 2, size / 2, 0, Math.PI * 2, true);
	    this.ctx.closePath();
	    this.ctx.fill();
	};

	CanvasRenderer.prototype.circleStroke = function (left, top, size, color, stroke, strokeColor) {
	    this.circle(left, top, size, color);
	    this.ctx.strokeStyle = strokeColor.toString();
	    this.ctx.stroke();
	};

	CanvasRenderer.prototype.drawShape = function (shape, color) {
	    this.shape(shape);
	    this.setFillStyle(color).fill();
	};

	CanvasRenderer.prototype.taints = function (imageContainer) {
	    if (imageContainer.tainted === null) {
	        this.taintCtx.drawImage(imageContainer.image, 0, 0);
	        try {
	            this.taintCtx.getImageData(0, 0, 1, 1);
	            imageContainer.tainted = false;
	        } catch (e) {
	            this.taintCtx = document.createElement("canvas").getContext("2d");
	            imageContainer.tainted = true;
	        }
	    }

	    return imageContainer.tainted;
	};

	CanvasRenderer.prototype.drawImage = function (imageContainer, sx, sy, sw, sh, dx, dy, dw, dh) {
	    if (!this.taints(imageContainer) || this.options.allowTaint) {
	        this.ctx.drawImage(imageContainer.image, sx, sy, sw, sh, dx, dy, dw, dh);
	    }
	};

	CanvasRenderer.prototype.clip = function (shapes, callback, context) {
	    this.ctx.save();
	    shapes.filter(hasEntries).forEach(function (shape) {
	        this.shape(shape).clip();
	    }, this);
	    callback.call(context);
	    this.ctx.restore();
	};

	CanvasRenderer.prototype.shape = function (shape) {
	    this.ctx.beginPath();
	    shape.forEach(function (point, index) {
	        if (point[0] === "rect") {
	            this.ctx.rect.apply(this.ctx, point.slice(1));
	        } else {
	            this.ctx[index === 0 ? "moveTo" : point[0] + "To"].apply(this.ctx, point.slice(1));
	        }
	    }, this);
	    this.ctx.closePath();
	    return this.ctx;
	};

	CanvasRenderer.prototype.font = function (color, style, variant, weight, size, family) {
	    this.setFillStyle(color).font = [style, variant, weight, size, family].join(" ").split(",")[0];
	};

	CanvasRenderer.prototype.fontShadow = function (color, offsetX, offsetY, blur) {
	    this.setVariable("shadowColor", color.toString()).setVariable("shadowOffsetY", offsetX).setVariable("shadowOffsetX", offsetY).setVariable("shadowBlur", blur);
	};

	CanvasRenderer.prototype.clearShadow = function () {
	    this.setVariable("shadowColor", "rgba(0,0,0,0)");
	};

	CanvasRenderer.prototype.setOpacity = function (opacity) {
	    this.ctx.globalAlpha = opacity;
	};

	CanvasRenderer.prototype.setTransform = function (transform) {
	    this.ctx.translate(transform.origin[0], transform.origin[1]);
	    this.ctx.transform.apply(this.ctx, transform.matrix);
	    this.ctx.translate(-transform.origin[0], -transform.origin[1]);
	};

	CanvasRenderer.prototype.setVariable = function (property, value) {
	    if (this.variables[property] !== value) {
	        this.variables[property] = this.ctx[property] = value;
	    }

	    return this;
	};

	CanvasRenderer.prototype.text = function (text, left, bottom) {
	    this.ctx.fillText(text, left, bottom);
	};

	CanvasRenderer.prototype.backgroundRepeatShape = function (imageContainer, backgroundPosition, size, bounds, left, top, width, height, borderData) {
	    var shape = [["line", Math.round(left), Math.round(top)], ["line", Math.round(left + width), Math.round(top)], ["line", Math.round(left + width), Math.round(height + top)], ["line", Math.round(left), Math.round(height + top)]];
	    this.clip([shape], function () {
	        this.renderBackgroundRepeat(imageContainer, backgroundPosition, size, bounds, borderData[3], borderData[0]);
	    }, this);
	};

	CanvasRenderer.prototype.renderBackgroundRepeat = function (imageContainer, backgroundPosition, size, bounds, borderLeft, borderTop) {
	    var offsetX = Math.round(bounds.left + backgroundPosition.left + borderLeft),
	        offsetY = Math.round(bounds.top + backgroundPosition.top + borderTop);
	    this.setFillStyle(this.ctx.createPattern(this.resizeImage(imageContainer, size), "repeat"));
	    this.ctx.translate(offsetX, offsetY);
	    this.ctx.fill();
	    this.ctx.translate(-offsetX, -offsetY);
	};

	CanvasRenderer.prototype.renderBackgroundGradient = function (gradientImage, bounds) {
	    if (gradientImage instanceof LinearGradientContainer) {
	        var gradient = this.ctx.createLinearGradient(bounds.left + bounds.width * gradientImage.x0, bounds.top + bounds.height * gradientImage.y0, bounds.left + bounds.width * gradientImage.x1, bounds.top + bounds.height * gradientImage.y1);
	        gradientImage.colorStops.forEach(function (colorStop) {
	            gradient.addColorStop(colorStop.stop, colorStop.color.toString());
	        });
	        this.rectangle(bounds.left, bounds.top, bounds.width, bounds.height, gradient);
	    }
	};

	CanvasRenderer.prototype.resizeImage = function (imageContainer, size) {
	    var image = imageContainer.image;
	    if (image.width === size.width && image.height === size.height) {
	        return image;
	    }

	    var ctx,
	        canvas = document.createElement('canvas');
	    canvas.width = size.width;
	    canvas.height = size.height;
	    ctx = canvas.getContext("2d");
	    ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, size.width, size.height);
	    return canvas;
	};

	function hasEntries(array) {
	    return array.length > 0;
	}

	module.exports = CanvasRenderer;

/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var log = __webpack_require__(5);

	function Renderer(width, height, images, options, document) {
	    this.width = width;
	    this.height = height;
	    this.images = images;
	    this.options = options;
	    this.document = document;
	}

	Renderer.prototype.renderImage = function (container, bounds, borderData, imageContainer) {
	    var paddingLeft = container.cssInt('paddingLeft'),
	        paddingTop = container.cssInt('paddingTop'),
	        paddingRight = container.cssInt('paddingRight'),
	        paddingBottom = container.cssInt('paddingBottom'),
	        borders = borderData.borders;

	    var width = bounds.width - (borders[1].width + borders[3].width + paddingLeft + paddingRight);
	    var height = bounds.height - (borders[0].width + borders[2].width + paddingTop + paddingBottom);
	    this.drawImage(imageContainer, 0, 0, imageContainer.image.width || width, imageContainer.image.height || height, bounds.left + paddingLeft + borders[3].width, bounds.top + paddingTop + borders[0].width, width, height);
	};

	Renderer.prototype.renderBackground = function (container, bounds, borderData) {
	    if (bounds.height > 0 && bounds.width > 0) {
	        this.renderBackgroundColor(container, bounds);
	        this.renderBackgroundImage(container, bounds, borderData);
	    }
	};

	Renderer.prototype.renderBackgroundColor = function (container, bounds) {
	    var color = container.color("backgroundColor");
	    if (!color.isTransparent()) {
	        this.rectangle(bounds.left, bounds.top, bounds.width, bounds.height, color);
	    }
	};

	Renderer.prototype.renderBorders = function (borders) {
	    borders.forEach(this.renderBorder, this);
	};

	Renderer.prototype.renderBorder = function (data) {
	    if (!data.color.isTransparent() && data.args !== null) {
	        this.drawShape(data.args, data.color);
	    }
	};

	Renderer.prototype.renderBackgroundImage = function (container, bounds, borderData) {
	    var backgroundImages = container.parseBackgroundImages();
	    backgroundImages.reverse().forEach(function (backgroundImage, index, arr) {
	        switch (backgroundImage.method) {
	            case "url":
	                var image = this.images.get(backgroundImage.args[0]);
	                if (image) {
	                    this.renderBackgroundRepeating(container, bounds, image, arr.length - (index + 1), borderData);
	                } else {
	                    log("Error loading background-image", backgroundImage.args[0]);
	                }
	                break;
	            case "linear-gradient":
	            case "gradient":
	                var gradientImage = this.images.get(backgroundImage.value);
	                if (gradientImage) {
	                    this.renderBackgroundGradient(gradientImage, bounds, borderData);
	                } else {
	                    log("Error loading background-image", backgroundImage.args[0]);
	                }
	                break;
	            case "none":
	                break;
	            default:
	                log("Unknown background-image type", backgroundImage.args[0]);
	        }
	    }, this);
	};

	Renderer.prototype.renderBackgroundRepeating = function (container, bounds, imageContainer, index, borderData) {
	    var size = container.parseBackgroundSize(bounds, imageContainer.image, index);
	    var position = container.parseBackgroundPosition(bounds, imageContainer.image, index, size);
	    var repeat = container.parseBackgroundRepeat(index);
	    switch (repeat) {
	        case "repeat-x":
	        case "repeat no-repeat":
	            this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + borderData[3], bounds.top + position.top + borderData[0], 99999, size.height, borderData);
	            break;
	        case "repeat-y":
	        case "no-repeat repeat":
	            this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + position.left + borderData[3], bounds.top + borderData[0], size.width, 99999, borderData);
	            break;
	        case "no-repeat":
	            this.backgroundRepeatShape(imageContainer, position, size, bounds, bounds.left + position.left + borderData[3], bounds.top + position.top + borderData[0], size.width, size.height, borderData);
	            break;
	        default:
	            this.renderBackgroundRepeat(imageContainer, position, size, { top: bounds.top, left: bounds.left }, borderData[3], borderData[0]);
	            break;
	    }
	};

	module.exports = Renderer;

/***/ }),
/* 5 */
/***/ (function(module, exports) {

	"use strict";

	var logger = function logger() {
	    if (logger.options.logging && window.console && window.console.log) {
	        Function.prototype.bind.call(window.console.log, window.console).apply(window.console, [Date.now() - logger.options.start + "ms", "html2canvas:"].concat([].slice.call(arguments, 0)));
	    }
	};

	logger.options = { logging: false };
	module.exports = logger;

/***/ }),
/* 6 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var GradientContainer = __webpack_require__(7);
	var Color = __webpack_require__(8);

	function LinearGradientContainer(imageData) {
	    GradientContainer.apply(this, arguments);
	    this.type = GradientContainer.TYPES.LINEAR;

	    var hasDirection = LinearGradientContainer.REGEXP_DIRECTION.test(imageData.args[0]) || !GradientContainer.REGEXP_COLORSTOP.test(imageData.args[0]);

	    if (hasDirection) {
	        imageData.args[0].split(/\s+/).reverse().forEach(function (position, index) {
	            switch (position) {
	                case "left":
	                    this.x0 = 0;
	                    this.x1 = 1;
	                    break;
	                case "top":
	                    this.y0 = 0;
	                    this.y1 = 1;
	                    break;
	                case "right":
	                    this.x0 = 1;
	                    this.x1 = 0;
	                    break;
	                case "bottom":
	                    this.y0 = 1;
	                    this.y1 = 0;
	                    break;
	                case "to":
	                    var y0 = this.y0;
	                    var x0 = this.x0;
	                    this.y0 = this.y1;
	                    this.x0 = this.x1;
	                    this.x1 = x0;
	                    this.y1 = y0;
	                    break;
	                case "center":
	                    break; // centered by default
	                // Firefox internally converts position keywords to percentages:
	                // http://www.w3.org/TR/2010/WD-CSS2-20101207/colors.html#propdef-background-position
	                default:
	                    // percentage or absolute length
	                    // TODO: support absolute start point positions (e.g., use bounds to convert px to a ratio)
	                    var ratio = parseFloat(position, 10) * 1e-2;
	                    if (isNaN(ratio)) {
	                        // invalid or unhandled value
	                        break;
	                    }
	                    if (index === 0) {
	                        this.y0 = ratio;
	                        this.y1 = 1 - this.y0;
	                    } else {
	                        this.x0 = ratio;
	                        this.x1 = 1 - this.x0;
	                    }
	                    break;
	            }
	        }, this);
	    } else {
	        this.y0 = 0;
	        this.y1 = 1;
	    }

	    this.colorStops = imageData.args.slice(hasDirection ? 1 : 0).map(function (colorStop) {
	        var colorStopMatch = colorStop.match(GradientContainer.REGEXP_COLORSTOP);
	        var value = +colorStopMatch[2];
	        var unit = value === 0 ? "%" : colorStopMatch[3]; // treat "0" as "0%"
	        return {
	            color: new Color(colorStopMatch[1]),
	            // TODO: support absolute stop positions (e.g., compute gradient line length & convert px to ratio)
	            stop: unit === "%" ? value / 100 : null
	        };
	    });

	    if (this.colorStops[0].stop === null) {
	        this.colorStops[0].stop = 0;
	    }

	    if (this.colorStops[this.colorStops.length - 1].stop === null) {
	        this.colorStops[this.colorStops.length - 1].stop = 1;
	    }

	    // calculates and fills-in explicit stop positions when omitted from rule
	    this.colorStops.forEach(function (colorStop, index) {
	        if (colorStop.stop === null) {
	            this.colorStops.slice(index).some(function (find, count) {
	                if (find.stop !== null) {
	                    colorStop.stop = (find.stop - this.colorStops[index - 1].stop) / (count + 1) + this.colorStops[index - 1].stop;
	                    return true;
	                } else {
	                    return false;
	                }
	            }, this);
	        }
	    }, this);
	}

	LinearGradientContainer.prototype = Object.create(GradientContainer.prototype);

	// TODO: support <angle> (e.g. -?\d{1,3}(?:\.\d+)deg, etc. : https://developer.mozilla.org/docs/Web/CSS/angle )
	LinearGradientContainer.REGEXP_DIRECTION = /^\s*(?:to|left|right|top|bottom|center|\d{1,3}(?:\.\d+)?%?)(?:\s|$)/i;

	module.exports = LinearGradientContainer;

/***/ }),
/* 7 */
/***/ (function(module, exports) {

	"use strict";

	function GradientContainer(imageData) {
	    this.src = imageData.value;
	    this.colorStops = [];
	    this.type = null;
	    this.x0 = 0.5;
	    this.y0 = 0.5;
	    this.x1 = 0.5;
	    this.y1 = 0.5;
	    this.promise = Promise.resolve(true);
	}

	GradientContainer.TYPES = {
	    LINEAR: 1,
	    RADIAL: 2
	};

	// TODO: support hsl[a], negative %/length values
	// TODO: support <angle> (e.g. -?\d{1,3}(?:\.\d+)deg, etc. : https://developer.mozilla.org/docs/Web/CSS/angle )
	GradientContainer.REGEXP_COLORSTOP = /^\s*(rgba?\(\s*\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*[0-9\.]+)?\s*\)|[a-z]{3,20}|#[a-f0-9]{3,6})(?:\s+(\d{1,3}(?:\.\d+)?)(%|px)?)?(?:\s|$)/i;

	module.exports = GradientContainer;

/***/ }),
/* 8 */
/***/ (function(module, exports) {

	"use strict";

	// http://dev.w3.org/csswg/css-color/

	function Color(value) {
	    this.r = 0;
	    this.g = 0;
	    this.b = 0;
	    this.a = null;
	    var result = this.fromArray(value) || this.namedColor(value) || this.rgb(value) || this.rgba(value) || this.hex6(value) || this.hex3(value);
	}

	Color.prototype.darken = function (amount) {
	    var a = 1 - amount;
	    return new Color([Math.round(this.r * a), Math.round(this.g * a), Math.round(this.b * a), this.a]);
	};

	Color.prototype.isTransparent = function () {
	    return this.a === 0;
	};

	Color.prototype.isBlack = function () {
	    return this.r === 0 && this.g === 0 && this.b === 0;
	};

	Color.prototype.fromArray = function (array) {
	    if (Array.isArray(array)) {
	        this.r = Math.min(array[0], 255);
	        this.g = Math.min(array[1], 255);
	        this.b = Math.min(array[2], 255);
	        if (array.length > 3) {
	            this.a = array[3];
	        }
	    }

	    return Array.isArray(array);
	};

	var _hex3 = /^#([a-f0-9]{3})$/i;

	Color.prototype.hex3 = function (value) {
	    var match = null;
	    if ((match = value.match(_hex3)) !== null) {
	        this.r = parseInt(match[1][0] + match[1][0], 16);
	        this.g = parseInt(match[1][1] + match[1][1], 16);
	        this.b = parseInt(match[1][2] + match[1][2], 16);
	    }
	    return match !== null;
	};

	var _hex6 = /^#([a-f0-9]{6})$/i;

	Color.prototype.hex6 = function (value) {
	    var match = null;
	    if ((match = value.match(_hex6)) !== null) {
	        this.r = parseInt(match[1].substring(0, 2), 16);
	        this.g = parseInt(match[1].substring(2, 4), 16);
	        this.b = parseInt(match[1].substring(4, 6), 16);
	    }
	    return match !== null;
	};

	var _rgb = /^rgb\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)$/;

	Color.prototype.rgb = function (value) {
	    var match = null;
	    if ((match = value.match(_rgb)) !== null) {
	        this.r = Number(match[1]);
	        this.g = Number(match[2]);
	        this.b = Number(match[3]);
	    }
	    return match !== null;
	};

	var _rgba = /^rgba\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d?\.?\d+)\s*\)$/;

	Color.prototype.rgba = function (value) {
	    var match = null;
	    if ((match = value.match(_rgba)) !== null) {
	        this.r = Number(match[1]);
	        this.g = Number(match[2]);
	        this.b = Number(match[3]);
	        this.a = Number(match[4]);
	    }
	    return match !== null;
	};

	Color.prototype.toString = function () {
	    return this.a !== null && this.a !== 1 ? "rgba(" + [this.r, this.g, this.b, this.a].join(",") + ")" : "rgb(" + [this.r, this.g, this.b].join(",") + ")";
	};

	Color.prototype.namedColor = function (value) {
	    value = value.toLowerCase();
	    var color = colors[value];
	    if (color) {
	        this.r = color[0];
	        this.g = color[1];
	        this.b = color[2];
	    } else if (value === "transparent") {
	        this.r = this.g = this.b = this.a = 0;
	        return true;
	    }

	    return !!color;
	};

	Color.prototype.isColor = true;

	// JSON.stringify([].slice.call($$('.named-color-table tr'), 1).map(function(row) { return [row.childNodes[3].textContent, row.childNodes[5].textContent.trim().split(",").map(Number)] }).reduce(function(data, row) {data[row[0]] = row[1]; return data}, {}))
	var colors = {
	    "aliceblue": [240, 248, 255],
	    "antiquewhite": [250, 235, 215],
	    "aqua": [0, 255, 255],
	    "aquamarine": [127, 255, 212],
	    "azure": [240, 255, 255],
	    "beige": [245, 245, 220],
	    "bisque": [255, 228, 196],
	    "black": [0, 0, 0],
	    "blanchedalmond": [255, 235, 205],
	    "blue": [0, 0, 255],
	    "blueviolet": [138, 43, 226],
	    "brown": [165, 42, 42],
	    "burlywood": [222, 184, 135],
	    "cadetblue": [95, 158, 160],
	    "chartreuse": [127, 255, 0],
	    "chocolate": [210, 105, 30],
	    "coral": [255, 127, 80],
	    "cornflowerblue": [100, 149, 237],
	    "cornsilk": [255, 248, 220],
	    "crimson": [220, 20, 60],
	    "cyan": [0, 255, 255],
	    "darkblue": [0, 0, 139],
	    "darkcyan": [0, 139, 139],
	    "darkgoldenrod": [184, 134, 11],
	    "darkgray": [169, 169, 169],
	    "darkgreen": [0, 100, 0],
	    "darkgrey": [169, 169, 169],
	    "darkkhaki": [189, 183, 107],
	    "darkmagenta": [139, 0, 139],
	    "darkolivegreen": [85, 107, 47],
	    "darkorange": [255, 140, 0],
	    "darkorchid": [153, 50, 204],
	    "darkred": [139, 0, 0],
	    "darksalmon": [233, 150, 122],
	    "darkseagreen": [143, 188, 143],
	    "darkslateblue": [72, 61, 139],
	    "darkslategray": [47, 79, 79],
	    "darkslategrey": [47, 79, 79],
	    "darkturquoise": [0, 206, 209],
	    "darkviolet": [148, 0, 211],
	    "deeppink": [255, 20, 147],
	    "deepskyblue": [0, 191, 255],
	    "dimgray": [105, 105, 105],
	    "dimgrey": [105, 105, 105],
	    "dodgerblue": [30, 144, 255],
	    "firebrick": [178, 34, 34],
	    "floralwhite": [255, 250, 240],
	    "forestgreen": [34, 139, 34],
	    "fuchsia": [255, 0, 255],
	    "gainsboro": [220, 220, 220],
	    "ghostwhite": [248, 248, 255],
	    "gold": [255, 215, 0],
	    "goldenrod": [218, 165, 32],
	    "gray": [128, 128, 128],
	    "green": [0, 128, 0],
	    "greenyellow": [173, 255, 47],
	    "grey": [128, 128, 128],
	    "honeydew": [240, 255, 240],
	    "hotpink": [255, 105, 180],
	    "indianred": [205, 92, 92],
	    "indigo": [75, 0, 130],
	    "ivory": [255, 255, 240],
	    "khaki": [240, 230, 140],
	    "lavender": [230, 230, 250],
	    "lavenderblush": [255, 240, 245],
	    "lawngreen": [124, 252, 0],
	    "lemonchiffon": [255, 250, 205],
	    "lightblue": [173, 216, 230],
	    "lightcoral": [240, 128, 128],
	    "lightcyan": [224, 255, 255],
	    "lightgoldenrodyellow": [250, 250, 210],
	    "lightgray": [211, 211, 211],
	    "lightgreen": [144, 238, 144],
	    "lightgrey": [211, 211, 211],
	    "lightpink": [255, 182, 193],
	    "lightsalmon": [255, 160, 122],
	    "lightseagreen": [32, 178, 170],
	    "lightskyblue": [135, 206, 250],
	    "lightslategray": [119, 136, 153],
	    "lightslategrey": [119, 136, 153],
	    "lightsteelblue": [176, 196, 222],
	    "lightyellow": [255, 255, 224],
	    "lime": [0, 255, 0],
	    "limegreen": [50, 205, 50],
	    "linen": [250, 240, 230],
	    "magenta": [255, 0, 255],
	    "maroon": [128, 0, 0],
	    "mediumaquamarine": [102, 205, 170],
	    "mediumblue": [0, 0, 205],
	    "mediumorchid": [186, 85, 211],
	    "mediumpurple": [147, 112, 219],
	    "mediumseagreen": [60, 179, 113],
	    "mediumslateblue": [123, 104, 238],
	    "mediumspringgreen": [0, 250, 154],
	    "mediumturquoise": [72, 209, 204],
	    "mediumvioletred": [199, 21, 133],
	    "midnightblue": [25, 25, 112],
	    "mintcream": [245, 255, 250],
	    "mistyrose": [255, 228, 225],
	    "moccasin": [255, 228, 181],
	    "navajowhite": [255, 222, 173],
	    "navy": [0, 0, 128],
	    "oldlace": [253, 245, 230],
	    "olive": [128, 128, 0],
	    "olivedrab": [107, 142, 35],
	    "orange": [255, 165, 0],
	    "orangered": [255, 69, 0],
	    "orchid": [218, 112, 214],
	    "palegoldenrod": [238, 232, 170],
	    "palegreen": [152, 251, 152],
	    "paleturquoise": [175, 238, 238],
	    "palevioletred": [219, 112, 147],
	    "papayawhip": [255, 239, 213],
	    "peachpuff": [255, 218, 185],
	    "peru": [205, 133, 63],
	    "pink": [255, 192, 203],
	    "plum": [221, 160, 221],
	    "powderblue": [176, 224, 230],
	    "purple": [128, 0, 128],
	    "rebeccapurple": [102, 51, 153],
	    "red": [255, 0, 0],
	    "rosybrown": [188, 143, 143],
	    "royalblue": [65, 105, 225],
	    "saddlebrown": [139, 69, 19],
	    "salmon": [250, 128, 114],
	    "sandybrown": [244, 164, 96],
	    "seagreen": [46, 139, 87],
	    "seashell": [255, 245, 238],
	    "sienna": [160, 82, 45],
	    "silver": [192, 192, 192],
	    "skyblue": [135, 206, 235],
	    "slateblue": [106, 90, 205],
	    "slategray": [112, 128, 144],
	    "slategrey": [112, 128, 144],
	    "snow": [255, 250, 250],
	    "springgreen": [0, 255, 127],
	    "steelblue": [70, 130, 180],
	    "tan": [210, 180, 140],
	    "teal": [0, 128, 128],
	    "thistle": [216, 191, 216],
	    "tomato": [255, 99, 71],
	    "turquoise": [64, 224, 208],
	    "violet": [238, 130, 238],
	    "wheat": [245, 222, 179],
	    "white": [255, 255, 255],
	    "whitesmoke": [245, 245, 245],
	    "yellow": [255, 255, 0],
	    "yellowgreen": [154, 205, 50]
	};

	module.exports = Color;

/***/ }),
/* 9 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var log = __webpack_require__(5);
	var ImageContainer = __webpack_require__(10);
	var DummyImageContainer = __webpack_require__(11);
	var ProxyImageContainer = __webpack_require__(13);
	var FrameContainer = __webpack_require__(17);
	var SVGContainer = __webpack_require__(18);
	var SVGNodeContainer = __webpack_require__(19);
	var LinearGradientContainer = __webpack_require__(6);
	var WebkitGradientContainer = __webpack_require__(20);
	var bind = __webpack_require__(12).bind;

	function ImageLoader(options, support) {
	    this.link = null;
	    this.options = options;
	    this.support = support;
	    this.origin = this.getOrigin(window.location.href);
	}

	ImageLoader.prototype.findImages = function (nodes) {
	    var images = [];
	    nodes.reduce(function (imageNodes, container) {
	        switch (container.node.nodeName) {
	            case "IMG":
	                return imageNodes.concat([{
	                    args: [container.node.src],
	                    method: "url"
	                }]);
	            case "svg":
	            case "IFRAME":
	                return imageNodes.concat([{
	                    args: [container.node],
	                    method: container.node.nodeName
	                }]);
	        }
	        return imageNodes;
	    }, []).forEach(this.addImage(images, this.loadImage), this);
	    return images;
	};

	ImageLoader.prototype.findBackgroundImage = function (images, container) {
	    container.parseBackgroundImages().filter(this.hasImageBackground).forEach(this.addImage(images, this.loadImage), this);
	    return images;
	};

	ImageLoader.prototype.addImage = function (images, callback) {
	    return function (newImage) {
	        newImage.args.forEach(function (image) {
	            if (!this.imageExists(images, image)) {
	                images.splice(0, 0, callback.call(this, newImage));
	                log('Added image #' + images.length, typeof image === "string" ? image.substring(0, 100) : image);
	            }
	        }, this);
	    };
	};

	ImageLoader.prototype.hasImageBackground = function (imageData) {
	    return imageData.method !== "none";
	};

	ImageLoader.prototype.loadImage = function (imageData) {
	    if (imageData.method === "url") {
	        var src = imageData.args[0];
	        if (this.isSVG(src) && !this.support.svg && !this.options.allowTaint) {
	            return new SVGContainer(src);
	        } else if (src.match(/data:image\/.*;base64,/i)) {
	            return new ImageContainer(src.replace(/url\(['"]{0,}|['"]{0,}\)$/ig, ''), false);
	        } else if (this.isSameOrigin(src) || this.options.allowTaint === true || this.isSVG(src)) {
	            return new ImageContainer(src, false);
	        } else if (this.support.cors && !this.options.allowTaint && this.options.useCORS) {
	            return new ImageContainer(src, true);
	        } else if (this.options.proxy) {
	            return new ProxyImageContainer(src, this.options.proxy);
	        } else {
	            return new DummyImageContainer(src);
	        }
	    } else if (imageData.method === "linear-gradient") {
	        return new LinearGradientContainer(imageData);
	    } else if (imageData.method === "gradient") {
	        return new WebkitGradientContainer(imageData);
	    } else if (imageData.method === "svg") {
	        return new SVGNodeContainer(imageData.args[0], this.support.svg);
	    } else if (imageData.method === "IFRAME") {
	        return new FrameContainer(imageData.args[0], this.isSameOrigin(imageData.args[0].src), this.options);
	    } else {
	        return new DummyImageContainer(imageData);
	    }
	};

	ImageLoader.prototype.isSVG = function (src) {
	    return src.substring(src.length - 3).toLowerCase() === "svg" || SVGContainer.prototype.isInline(src);
	};

	ImageLoader.prototype.imageExists = function (images, src) {
	    return images.some(function (image) {
	        return image.src === src;
	    });
	};

	ImageLoader.prototype.isSameOrigin = function (url) {
	    return this.getOrigin(url) === this.origin;
	};

	ImageLoader.prototype.getOrigin = function (url) {
	    var link = this.link || (this.link = document.createElement("a"));
	    link.href = url;
	    link.href = link.href; // IE9, LOL! - http://jsfiddle.net/niklasvh/2e48b/
	    return link.protocol + link.hostname + link.port;
	};

	ImageLoader.prototype.getPromise = function (container) {
	    return this.timeout(container, this.options.imageTimeout)['catch'](function () {
	        var dummy = new DummyImageContainer(container.src);
	        return dummy.promise.then(function (image) {
	            container.image = image;
	        });
	    });
	};

	ImageLoader.prototype.get = function (src) {
	    var found = null;
	    return this.images.some(function (img) {
	        return (found = img).src === src;
	    }) ? found : null;
	};

	ImageLoader.prototype.fetch = function (nodes) {
	    this.images = nodes.reduce(bind(this.findBackgroundImage, this), this.findImages(nodes));
	    this.images.forEach(function (image, index) {
	        image.promise.then(function () {
	            log("Succesfully loaded image #" + (index + 1), image);
	        }, function (e) {
	            log("Failed loading image #" + (index + 1), image, e);
	        });
	    });
	    this.ready = Promise.all(this.images.map(this.getPromise, this));
	    log("Finished searching images");
	    return this;
	};

	ImageLoader.prototype.timeout = function (container, timeout) {
	    var timer;
	    var promise = Promise.race([container.promise, new Promise(function (res, reject) {
	        timer = setTimeout(function () {
	            log("Timed out loading image", container);
	            reject(container);
	        }, timeout);
	    })]).then(function (container) {
	        clearTimeout(timer);
	        return container;
	    });
	    promise['catch'](function () {
	        clearTimeout(timer);
	    });
	    return promise;
	};

	module.exports = ImageLoader;

/***/ }),
/* 10 */
/***/ (function(module, exports) {

	"use strict";

	function ImageContainer(src, cors) {
	    this.src = src;
	    this.image = new Image();
	    var self = this;
	    this.tainted = null;
	    this.promise = new Promise(function (resolve, reject) {
	        self.image.onload = resolve;
	        self.image.onerror = reject;
	        if (cors) {
	            self.image.crossOrigin = "anonymous";
	        }
	        self.image.src = src;
	        if (self.image.complete === true) {
	            resolve(self.image);
	        }
	    });
	}

	module.exports = ImageContainer;

/***/ }),
/* 11 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var log = __webpack_require__(5);
	var smallImage = __webpack_require__(12).smallImage;

	function DummyImageContainer(src) {
	    this.src = src;
	    log("DummyImageContainer for", src);
	    if (!this.promise || !this.image) {
	        log("Initiating DummyImageContainer");
	        DummyImageContainer.prototype.image = new Image();
	        var image = this.image;
	        DummyImageContainer.prototype.promise = new Promise(function (resolve, reject) {
	            image.onload = resolve;
	            image.onerror = reject;
	            image.src = smallImage();
	            if (image.complete === true) {
	                resolve(image);
	            }
	        });
	    }
	}

	module.exports = DummyImageContainer;

/***/ }),
/* 12 */
/***/ (function(module, exports) {

	"use strict";

	exports.smallImage = function smallImage() {
	    return "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7";
	};

	exports.bind = function (callback, context) {
	    return function () {
	        return callback.apply(context, arguments);
	    };
	};

	/*
	 * base64-arraybuffer
	 * https://github.com/niklasvh/base64-arraybuffer
	 *
	 * Copyright (c) 2012 Niklas von Hertzen
	 * Licensed under the MIT license.
	 */

	exports.decode64 = function (base64) {
	    var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	    var len = base64.length,
	        i,
	        encoded1,
	        encoded2,
	        encoded3,
	        encoded4,
	        byte1,
	        byte2,
	        byte3;

	    var output = "";

	    for (i = 0; i < len; i += 4) {
	        encoded1 = chars.indexOf(base64[i]);
	        encoded2 = chars.indexOf(base64[i + 1]);
	        encoded3 = chars.indexOf(base64[i + 2]);
	        encoded4 = chars.indexOf(base64[i + 3]);

	        byte1 = encoded1 << 2 | encoded2 >> 4;
	        byte2 = (encoded2 & 15) << 4 | encoded3 >> 2;
	        byte3 = (encoded3 & 3) << 6 | encoded4;
	        if (encoded3 === 64) {
	            output += String.fromCharCode(byte1);
	        } else if (encoded4 === 64 || encoded4 === -1) {
	            output += String.fromCharCode(byte1, byte2);
	        } else {
	            output += String.fromCharCode(byte1, byte2, byte3);
	        }
	    }

	    return output;
	};

	exports.getBounds = function (node) {
	    if (node.getBoundingClientRect) {
	        var clientRect = node.getBoundingClientRect();
	        var width = node.offsetWidth == null ? clientRect.width : node.offsetWidth;
	        return {
	            top: clientRect.top,
	            bottom: clientRect.bottom || clientRect.top + clientRect.height,
	            right: clientRect.left + width,
	            left: clientRect.left,
	            width: width,
	            height: node.offsetHeight == null ? clientRect.height : node.offsetHeight
	        };
	    }
	    return {};
	};

	exports.offsetBounds = function (node) {
	    var parent = node.offsetParent ? exports.offsetBounds(node.offsetParent) : { top: 0, left: 0 };

	    return {
	        top: node.offsetTop + parent.top,
	        bottom: node.offsetTop + node.offsetHeight + parent.top,
	        right: node.offsetLeft + parent.left + node.offsetWidth,
	        left: node.offsetLeft + parent.left,
	        width: node.offsetWidth,
	        height: node.offsetHeight
	    };
	};

	exports.parseBackgrounds = function (backgroundImage) {
	    var whitespace = ' \r\n\t',
	        method,
	        definition,
	        prefix,
	        prefix_i,
	        block,
	        results = [],
	        mode = 0,
	        numParen = 0,
	        quote,
	        args;
	    var appendResult = function appendResult() {
	        if (method) {
	            if (definition.substr(0, 1) === '"') {
	                definition = definition.substr(1, definition.length - 2);
	            }
	            if (definition) {
	                args.push(definition);
	            }
	            if (method.substr(0, 1) === '-' && (prefix_i = method.indexOf('-', 1) + 1) > 0) {
	                prefix = method.substr(0, prefix_i);
	                method = method.substr(prefix_i);
	            }
	            results.push({
	                prefix: prefix,
	                method: method.toLowerCase(),
	                value: block,
	                args: args,
	                image: null
	            });
	        }
	        args = [];
	        method = prefix = definition = block = '';
	    };
	    args = [];
	    method = prefix = definition = block = '';
	    backgroundImage.split("").forEach(function (c) {
	        if (mode === 0 && whitespace.indexOf(c) > -1) {
	            return;
	        }
	        switch (c) {
	            case '"':
	                if (!quote) {
	                    quote = c;
	                } else if (quote === c) {
	                    quote = null;
	                }
	                break;
	            case '(':
	                if (quote) {
	                    break;
	                } else if (mode === 0) {
	                    mode = 1;
	                    block += c;
	                    return;
	                } else {
	                    numParen++;
	                }
	                break;
	            case ')':
	                if (quote) {
	                    break;
	                } else if (mode === 1) {
	                    if (numParen === 0) {
	                        mode = 0;
	                        block += c;
	                        appendResult();
	                        return;
	                    } else {
	                        numParen--;
	                    }
	                }
	                break;

	            case ',':
	                if (quote) {
	                    break;
	                } else if (mode === 0) {
	                    appendResult();
	                    return;
	                } else if (mode === 1) {
	                    if (numParen === 0 && !method.match(/^url$/i)) {
	                        args.push(definition);
	                        definition = '';
	                        block += c;
	                        return;
	                    }
	                }
	                break;
	        }

	        block += c;
	        if (mode === 0) {
	            method += c;
	        } else {
	            definition += c;
	        }
	    });

	    appendResult();
	    return results;
	};

/***/ }),
/* 13 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";

	var ProxyURL = __webpack_require__(14).ProxyURL;

	function ProxyImageContainer(src, proxy) {
	    var link = document.createElement("a");
	    link.href = src;
	    src = link.href;
	    this.src = src;
	    this.image = new Image();
	    var self = this;
	    this.promise = new Promise(function (resolve, reject) {
	        self.image.crossOrigin = "Anonymous";
	        self.image.onload = resolve;
	        self.image.onerror = reject;

	        new ProxyURL(src, proxy, document).then(function (url) {
	            self.image.src = url;
	        })['catch'](reject);
	    });
	}

	module.exports = ProxyImageContainer;

/***/ }),
/* 14 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var XHR = __webpack_require__(15);
	var utils = __webpack_require__(12);
	var log = __webpack_require__(5);
	var createWindowClone = __webpack_require__(16);
	var decode64 = utils.decode64;

	function Proxy(src, proxyUrl, document) {
	    var supportsCORS = 'withCredentials' in new XMLHttpRequest();
	    if (!proxyUrl) {
	        return Promise.reject("No proxy configured");
	    }
	    var callback = createCallback(supportsCORS);
	    var url = createProxyUrl(proxyUrl, src, callback);

	    return supportsCORS ? XHR(url) : jsonp(document, url, callback).then(function (response) {
	        return decode64(response.content);
	    });
	}
	var proxyCount = 0;

	function ProxyURL(src, proxyUrl, document) {
	    var supportsCORSImage = 'crossOrigin' in new Image();
	    var callback = createCallback(supportsCORSImage);
	    var url = createProxyUrl(proxyUrl, src, callback);
	    return supportsCORSImage ? Promise.resolve(url) : jsonp(document, url, callback).then(function (response) {
	        return "data:" + response.type + ";base64," + response.content;
	    });
	}

	function jsonp(document, url, callback) {
	    return new Promise(function (resolve, reject) {
	        var s = document.createElement("script");
	        var cleanup = function cleanup() {
	            delete window.html2canvas.proxy[callback];
	            document.body.removeChild(s);
	        };
	        window.html2canvas.proxy[callback] = function (response) {
	            cleanup();
	            resolve(response);
	        };
	        s.src = url;
	        s.onerror = function (e) {
	            cleanup();
	            reject(e);
	        };
	        document.body.appendChild(s);
	    });
	}

	function createCallback(useCORS) {
	    return !useCORS ? "html2canvas_" + Date.now() + "_" + ++proxyCount + "_" + Math.round(Math.random() * 100000) : "";
	}

	function createProxyUrl(proxyUrl, src, callback) {
	    return proxyUrl + "?url=" + encodeURIComponent(src) + (callback.length ? "&callback=html2canvas.proxy." + callback : "");
	}

	function documentFromHTML(src) {
	    return function (html) {
	        var parser = new DOMParser(),
	            doc;
	        try {
	            doc = parser.parseFromString(html, "text/html");
	        } catch (e) {
	            log("DOMParser not supported, falling back to createHTMLDocument");
	            doc = document.implementation.createHTMLDocument("");
	            try {
	                doc.open();
	                doc.write(html);
	                doc.close();
	            } catch (ee) {
	                log("createHTMLDocument write not supported, falling back to document.body.innerHTML");
	                doc.body.innerHTML = html; // ie9 doesnt support writing to documentElement
	            }
	        }

	        var b = doc.querySelector("base");
	        if (!b || !b.href.host) {
	            var base = doc.createElement("base");
	            base.href = src;
	            doc.head.insertBefore(base, doc.head.firstChild);
	        }

	        return doc;
	    };
	}

	function loadUrlDocument(src, proxy, document, width, height, options) {
	    return new Proxy(src, proxy, window.document).then(documentFromHTML(src)).then(function (doc) {
	        return createWindowClone(doc, document, width, height, options, 0, 0);
	    });
	}

	exports.Proxy = Proxy;
	exports.ProxyURL = ProxyURL;
	exports.loadUrlDocument = loadUrlDocument;

/***/ }),
/* 15 */
/***/ (function(module, exports) {

	"use strict";

	function XHR(url) {
	    return new Promise(function (resolve, reject) {
	        var xhr = new XMLHttpRequest();
	        xhr.open('GET', url);

	        xhr.onload = function () {
	            if (xhr.status === 200) {
	                resolve(xhr.responseText);
	            } else {
	                reject(new Error(xhr.statusText));
	            }
	        };

	        xhr.onerror = function () {
	            reject(new Error("Network Error"));
	        };

	        xhr.send();
	    });
	}

	module.exports = XHR;

/***/ }),
/* 16 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";

	var log = __webpack_require__(5);

	function restoreOwnerScroll(ownerDocument, x, y) {
	    if (ownerDocument.defaultView && (x !== ownerDocument.defaultView.pageXOffset || y !== ownerDocument.defaultView.pageYOffset)) {
	        ownerDocument.defaultView.scrollTo(x, y);
	    }
	}

	function cloneCanvasContents(canvas, clonedCanvas) {
	    try {
	        if (clonedCanvas) {
	            clonedCanvas.width = canvas.width;
	            clonedCanvas.height = canvas.height;
	            clonedCanvas.getContext("2d").putImageData(canvas.getContext("2d").getImageData(0, 0, canvas.width, canvas.height), 0, 0);
	        }
	    } catch (e) {
	        log("Unable to copy canvas content from", canvas, e);
	    }
	}

	function cloneNode(node, javascriptEnabled) {
	    var clone = node.nodeType === 3 ? document.createTextNode(node.nodeValue) : node.cloneNode(false);

	    var child = node.firstChild;
	    while (child) {
	        if (javascriptEnabled === true || child.nodeType !== 1 || child.nodeName !== 'SCRIPT') {
	            clone.appendChild(cloneNode(child, javascriptEnabled));
	        }
	        child = child.nextSibling;
	    }

	    if (node.nodeType === 1) {
	        clone._scrollTop = node.scrollTop;
	        clone._scrollLeft = node.scrollLeft;
	        if (node.nodeName === "CANVAS") {
	            cloneCanvasContents(node, clone);
	        } else if (node.nodeName === "TEXTAREA" || node.nodeName === "SELECT") {
	            clone.value = node.value;
	        }
	    }

	    return clone;
	}

	function initNode(node) {
	    if (node.nodeType === 1) {
	        node.scrollTop = node._scrollTop;
	        node.scrollLeft = node._scrollLeft;

	        var child = node.firstChild;
	        while (child) {
	            initNode(child);
	            child = child.nextSibling;
	        }
	    }
	}

	module.exports = function (ownerDocument, containerDocument, width, height, options, x, y) {
	    var documentElement = cloneNode(ownerDocument.documentElement, options.javascriptEnabled);
	    var container = containerDocument.createElement("iframe");

	    container.className = "html2canvas-container";
	    container.style.visibility = "hidden";
	    container.style.position = "fixed";
	    container.style.left = "-10000px";
	    container.style.top = "0px";
	    container.style.border = "0";
	    container.width = width;
	    container.height = height;
	    container.scrolling = "no"; // ios won't scroll without it
	    containerDocument.body.appendChild(container);

	    return new Promise(function (resolve) {
	        var documentClone = container.contentWindow.document;

	        /* Chrome doesn't detect relative background-images assigned in inline <style> sheets when fetched through getComputedStyle
	         if window url is about:blank, we can assign the url to current by writing onto the document
	         */
	        container.contentWindow.onload = container.onload = function () {
	            var interval = setInterval(function () {
	                if (documentClone.body.childNodes.length > 0) {
	                    initNode(documentClone.documentElement);
	                    clearInterval(interval);
	                    if (options.type === "view") {
	                        container.contentWindow.scrollTo(x, y);
	                        if (/(iPad|iPhone|iPod)/g.test(navigator.userAgent) && (container.contentWindow.scrollY !== y || container.contentWindow.scrollX !== x)) {
	                            documentClone.documentElement.style.top = -y + "px";
	                            documentClone.documentElement.style.left = -x + "px";
	                            documentClone.documentElement.style.position = 'absolute';
	                        }
	                    }
	                    resolve(container);
	                }
	            }, 50);
	        };

	        documentClone.open();
	        documentClone.write("<!DOCTYPE html><html></html>");
	        // Chrome scrolls the parent document for some reason after the write to the cloned window???
	        restoreOwnerScroll(ownerDocument, x, y);
	        documentClone.replaceChild(documentClone.adoptNode(documentElement), documentClone.documentElement);
	        documentClone.close();
	    });
	};

/***/ }),
/* 17 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var utils = __webpack_require__(12);
	var getBounds = utils.getBounds;
	var loadUrlDocument = __webpack_require__(14).loadUrlDocument;

	function FrameContainer(container, sameOrigin, options) {
	    this.image = null;
	    this.src = container;
	    var self = this;
	    var bounds = getBounds(container);
	    this.promise = (!sameOrigin ? this.proxyLoad(options.proxy, bounds, options) : new Promise(function (resolve) {
	        if (container.contentWindow.document.URL === "about:blank" || container.contentWindow.document.documentElement == null) {
	            container.contentWindow.onload = container.onload = function () {
	                resolve(container);
	            };
	        } else {
	            resolve(container);
	        }
	    })).then(function (container) {
	        var html2canvas = __webpack_require__(1);
	        return html2canvas(container.contentWindow.document.documentElement, { type: 'view', width: container.width, height: container.height, proxy: options.proxy, javascriptEnabled: options.javascriptEnabled, removeContainer: options.removeContainer, allowTaint: options.allowTaint, imageTimeout: options.imageTimeout / 2 });
	    }).then(function (canvas) {
	        return self.image = canvas;
	    });
	}

	FrameContainer.prototype.proxyLoad = function (proxy, bounds, options) {
	    var container = this.src;
	    return loadUrlDocument(container.src, proxy, container.ownerDocument, bounds.width, bounds.height, options);
	};

	module.exports = FrameContainer;

/***/ }),
/* 18 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var XHR = __webpack_require__(15);
	var decode64 = __webpack_require__(12).decode64;

	function SVGContainer(src) {
	    this.src = src;
	    this.image = null;
	    var self = this;

	    this.promise = this.hasFabric().then(function () {
	        return self.isInline(src) ? Promise.resolve(self.inlineFormatting(src)) : XHR(src);
	    }).then(function (svg) {
	        return new Promise(function (resolve) {
	            window.html2canvas.svg.fabric.loadSVGFromString(svg, self.createCanvas.call(self, resolve));
	        });
	    });
	}

	SVGContainer.prototype.hasFabric = function () {
	    return !window.html2canvas.svg || !window.html2canvas.svg.fabric ? Promise.reject(new Error("html2canvas.svg.js is not loaded, cannot render svg")) : Promise.resolve();
	};

	SVGContainer.prototype.inlineFormatting = function (src) {
	    return (/^data:image\/svg\+xml;base64,/.test(src) ? this.decode64(this.removeContentType(src)) : this.removeContentType(src)
	    );
	};

	SVGContainer.prototype.removeContentType = function (src) {
	    return src.replace(/^data:image\/svg\+xml(;base64)?,/, '');
	};

	SVGContainer.prototype.isInline = function (src) {
	    return (/^data:image\/svg\+xml/i.test(src)
	    );
	};

	SVGContainer.prototype.createCanvas = function (resolve) {
	    var self = this;
	    return function (objects, options) {
	        var canvas = new window.html2canvas.svg.fabric.StaticCanvas('c');
	        self.image = canvas.lowerCanvasEl;
	        canvas.setWidth(options.width).setHeight(options.height).add(window.html2canvas.svg.fabric.util.groupSVGElements(objects, options)).renderAll();
	        resolve(canvas.lowerCanvasEl);
	    };
	};

	SVGContainer.prototype.decode64 = function (str) {
	    return typeof window.atob === "function" ? window.atob(str) : decode64(str);
	};

	module.exports = SVGContainer;

/***/ }),
/* 19 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";

	var SVGContainer = __webpack_require__(18);

	function SVGNodeContainer(node, _native) {
	    this.src = node;
	    this.image = null;
	    var self = this;

	    this.promise = _native ? new Promise(function (resolve, reject) {
	        self.image = new Image();
	        self.image.onload = resolve;
	        self.image.onerror = reject;
	        self.image.src = "data:image/svg+xml," + new XMLSerializer().serializeToString(node);
	        if (self.image.complete === true) {
	            resolve(self.image);
	        }
	    }) : this.hasFabric().then(function () {
	        return new Promise(function (resolve) {
	            window.html2canvas.svg.fabric.parseSVGDocument(node, self.createCanvas.call(self, resolve));
	        });
	    });
	}

	SVGNodeContainer.prototype = Object.create(SVGContainer.prototype);

	module.exports = SVGNodeContainer;

/***/ }),
/* 20 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";

	var GradientContainer = __webpack_require__(7);

	function WebkitGradientContainer(imageData) {
	    GradientContainer.apply(this, arguments);
	    this.type = imageData.args[0] === "linear" ? GradientContainer.TYPES.LINEAR : GradientContainer.TYPES.RADIAL;
	}

	WebkitGradientContainer.prototype = Object.create(GradientContainer.prototype);

	module.exports = WebkitGradientContainer;

/***/ }),
/* 21 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var log = __webpack_require__(5);
	var punycode = __webpack_require__(22);
	var NodeContainer = __webpack_require__(24);
	var TextContainer = __webpack_require__(25);
	var PseudoElementContainer = __webpack_require__(26);
	var FontMetrics = __webpack_require__(27);
	var Color = __webpack_require__(8);
	var StackingContext = __webpack_require__(29);
	var utils = __webpack_require__(12);
	var bind = utils.bind;
	var getBounds = utils.getBounds;
	var parseBackgrounds = utils.parseBackgrounds;
	var offsetBounds = utils.offsetBounds;

	function NodeParser(element, renderer, support, imageLoader, options) {
	    log("Starting NodeParser");
	    this.renderer = renderer;
	    this.options = options;
	    this.range = null;
	    this.support = support;
	    this.renderQueue = [];
	    this.stack = new StackingContext(true, 1, element.ownerDocument, null);
	    var parent = new NodeContainer(element, null);
	    if (options.background) {
	        renderer.rectangle(0, 0, renderer.width, renderer.height, new Color(options.background));
	    }
	    if (element === element.ownerDocument.documentElement) {
	        // http://www.w3.org/TR/css3-background/#special-backgrounds
	        var canvasBackground = new NodeContainer(parent.color('backgroundColor').isTransparent() ? element.ownerDocument.body : element.ownerDocument.documentElement, null);
	        renderer.rectangle(0, 0, renderer.width, renderer.height, canvasBackground.color('backgroundColor'));
	    }
	    parent.visibile = parent.isElementVisible();
	    this.createPseudoHideStyles(element.ownerDocument);
	    this.disableAnimations(element.ownerDocument);
	    this.nodes = flatten([parent].concat(this.getChildren(parent)).filter(function (container) {
	        return container.visible = container.isElementVisible();
	    }).map(this.getPseudoElements, this));
	    this.fontMetrics = new FontMetrics();
	    log("Fetched nodes, total:", this.nodes.length);
	    log("Calculate overflow clips");
	    this.calculateOverflowClips();
	    log("Start fetching images");
	    this.images = imageLoader.fetch(this.nodes.filter(isElement));
	    this.ready = this.images.ready.then(bind(function () {
	        log("Images loaded, starting parsing");
	        log("Creating stacking contexts");
	        this.createStackingContexts();
	        log("Sorting stacking contexts");
	        this.sortStackingContexts(this.stack);
	        this.parse(this.stack);
	        log("Render queue created with " + this.renderQueue.length + " items");
	        return new Promise(bind(function (resolve) {
	            if (!options.async) {
	                this.renderQueue.forEach(this.paint, this);
	                resolve();
	            } else if (typeof options.async === "function") {
	                options.async.call(this, this.renderQueue, resolve);
	            } else if (this.renderQueue.length > 0) {
	                this.renderIndex = 0;
	                this.asyncRenderer(this.renderQueue, resolve);
	            } else {
	                resolve();
	            }
	        }, this));
	    }, this));
	}

	NodeParser.prototype.calculateOverflowClips = function () {
	    this.nodes.forEach(function (container) {
	        if (isElement(container)) {
	            if (isPseudoElement(container)) {
	                container.appendToDOM();
	            }
	            container.borders = this.parseBorders(container);
	            var clip = container.css('overflow') === "hidden" ? [container.borders.clip] : [];
	            var cssClip = container.parseClip();
	            if (cssClip && ["absolute", "fixed"].indexOf(container.css('position')) !== -1) {
	                clip.push([["rect", container.bounds.left + cssClip.left, container.bounds.top + cssClip.top, cssClip.right - cssClip.left, cssClip.bottom - cssClip.top]]);
	            }
	            container.clip = hasParentClip(container) ? container.parent.clip.concat(clip) : clip;
	            container.backgroundClip = container.css('overflow') !== "hidden" ? container.clip.concat([container.borders.clip]) : container.clip;
	            if (isPseudoElement(container)) {
	                container.cleanDOM();
	            }
	        } else if (isTextNode(container)) {
	            container.clip = hasParentClip(container) ? container.parent.clip : [];
	        }
	        if (!isPseudoElement(container)) {
	            container.bounds = null;
	        }
	    }, this);
	};

	function hasParentClip(container) {
	    return container.parent && container.parent.clip.length;
	}

	NodeParser.prototype.asyncRenderer = function (queue, resolve, asyncTimer) {
	    asyncTimer = asyncTimer || Date.now();
	    this.paint(queue[this.renderIndex++]);
	    if (queue.length === this.renderIndex) {
	        resolve();
	    } else if (asyncTimer + 20 > Date.now()) {
	        this.asyncRenderer(queue, resolve, asyncTimer);
	    } else {
	        setTimeout(bind(function () {
	            this.asyncRenderer(queue, resolve);
	        }, this), 0);
	    }
	};

	NodeParser.prototype.createPseudoHideStyles = function (document) {
	    this.createStyles(document, '.' + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + ':before { content: "" !important; display: none !important; }' + '.' + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER + ':after { content: "" !important; display: none !important; }');
	};

	NodeParser.prototype.disableAnimations = function (document) {
	    this.createStyles(document, '* { -webkit-animation: none !important; -moz-animation: none !important; -o-animation: none !important; animation: none !important; ' + '-webkit-transition: none !important; -moz-transition: none !important; -o-transition: none !important; transition: none !important;}');
	};

	NodeParser.prototype.createStyles = function (document, styles) {
	    if (window.hidePseudoElementsAdded) {
	        return;
	    }
	    window.hidePseudoElementsAdded = true;
	    var hidePseudoElements = document.createElement('style');
	    hidePseudoElements.innerHTML = styles;
	    document.body.appendChild(hidePseudoElements);
	};

	NodeParser.prototype.getPseudoElements = function (container) {
	    var nodes = [[container]];
	    if (container.node.nodeType === Node.ELEMENT_NODE) {
	        var before = this.getPseudoElement(container, ":before");
	        var after = this.getPseudoElement(container, ":after");

	        if (before) {
	            nodes.push(before);
	        }

	        if (after) {
	            nodes.push(after);
	        }
	    }
	    return flatten(nodes);
	};

	function toCamelCase(str) {
	    return str.replace(/(\-[a-z])/g, function (match) {
	        return match.toUpperCase().replace('-', '');
	    });
	}

	NodeParser.prototype.getPseudoElement = function (container, type) {
	    var style = container.computedStyle(type);
	    if (!style || !style.content || style.content === "none" || style.content === "-moz-alt-content" || style.display === "none") {
	        return null;
	    }

	    var content = stripQuotes(style.content);
	    var isImage = content.substr(0, 3) === 'url';
	    var pseudoNode = document.createElement(isImage ? 'img' : 'html2canvaspseudoelement');
	    var pseudoContainer = new PseudoElementContainer(pseudoNode, container, type);

	    for (var i = style.length - 1; i >= 0; i--) {
	        var property = toCamelCase(style.item(i));
	        pseudoNode.style[property] = style[property];
	    }

	    pseudoNode.className = PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE + " " + PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER;

	    if (isImage) {
	        pseudoNode.src = parseBackgrounds(content)[0].args[0];
	        return [pseudoContainer];
	    } else {
	        var text = document.createTextNode(content);
	        pseudoNode.appendChild(text);
	        return [pseudoContainer, new TextContainer(text, pseudoContainer)];
	    }
	};

	NodeParser.prototype.getChildren = function (parentContainer) {
	    return flatten([].filter.call(parentContainer.node.childNodes, renderableNode).map(function (node) {
	        var container = [node.nodeType === Node.TEXT_NODE ? new TextContainer(node, parentContainer) : new NodeContainer(node, parentContainer)].filter(nonIgnoredElement);
	        return node.nodeType === Node.ELEMENT_NODE && container.length && node.tagName !== "TEXTAREA" ? container[0].isElementVisible() ? container.concat(this.getChildren(container[0])) : [] : container;
	    }, this));
	};

	NodeParser.prototype.newStackingContext = function (container, hasOwnStacking) {
	    var stack = new StackingContext(hasOwnStacking, container.getOpacity(), container.node, container.parent);
	    container.cloneTo(stack);
	    var parentStack = hasOwnStacking ? stack.getParentStack(this) : stack.parent.stack;
	    parentStack.contexts.push(stack);
	    container.stack = stack;
	};

	NodeParser.prototype.createStackingContexts = function () {
	    this.nodes.forEach(function (container) {
	        if (isElement(container) && (this.isRootElement(container) || hasOpacity(container) || isPositionedForStacking(container) || this.isBodyWithTransparentRoot(container) || container.hasTransform())) {
	            this.newStackingContext(container, true);
	        } else if (isElement(container) && (isPositioned(container) && zIndex0(container) || isInlineBlock(container) || isFloating(container))) {
	            this.newStackingContext(container, false);
	        } else {
	            container.assignStack(container.parent.stack);
	        }
	    }, this);
	};

	NodeParser.prototype.isBodyWithTransparentRoot = function (container) {
	    return container.node.nodeName === "BODY" && container.parent.color('backgroundColor').isTransparent();
	};

	NodeParser.prototype.isRootElement = function (container) {
	    return container.parent === null;
	};

	NodeParser.prototype.sortStackingContexts = function (stack) {
	    stack.contexts.sort(zIndexSort(stack.contexts.slice(0)));
	    stack.contexts.forEach(this.sortStackingContexts, this);
	};

	NodeParser.prototype.parseTextBounds = function (container) {
	    return function (text, index, textList) {
	        if (container.parent.css("textDecoration").substr(0, 4) !== "none" || text.trim().length !== 0) {
	            if (this.support.rangeBounds && !container.parent.hasTransform()) {
	                var offset = textList.slice(0, index).join("").length;
	                return this.getRangeBounds(container.node, offset, text.length);
	            } else if (container.node && typeof container.node.data === "string") {
	                var replacementNode = container.node.splitText(text.length);
	                var bounds = this.getWrapperBounds(container.node, container.parent.hasTransform());
	                container.node = replacementNode;
	                return bounds;
	            }
	        } else if (!this.support.rangeBounds || container.parent.hasTransform()) {
	            container.node = container.node.splitText(text.length);
	        }
	        return {};
	    };
	};

	NodeParser.prototype.getWrapperBounds = function (node, transform) {
	    var wrapper = node.ownerDocument.createElement('html2canvaswrapper');
	    var parent = node.parentNode,
	        backupText = node.cloneNode(true);

	    wrapper.appendChild(node.cloneNode(true));
	    parent.replaceChild(wrapper, node);
	    var bounds = transform ? offsetBounds(wrapper) : getBounds(wrapper);
	    parent.replaceChild(backupText, wrapper);
	    return bounds;
	};

	NodeParser.prototype.getRangeBounds = function (node, offset, length) {
	    var range = this.range || (this.range = node.ownerDocument.createRange());
	    range.setStart(node, offset);
	    range.setEnd(node, offset + length);
	    return range.getBoundingClientRect();
	};

	function ClearTransform() {}

	NodeParser.prototype.parse = function (stack) {
	    // http://www.w3.org/TR/CSS21/visuren.html#z-index
	    var negativeZindex = stack.contexts.filter(negativeZIndex); // 2. the child stacking contexts with negative stack levels (most negative first).
	    var descendantElements = stack.children.filter(isElement);
	    var descendantNonFloats = descendantElements.filter(not(isFloating));
	    var nonInlineNonPositionedDescendants = descendantNonFloats.filter(not(isPositioned)).filter(not(inlineLevel)); // 3 the in-flow, non-inline-level, non-positioned descendants.
	    var nonPositionedFloats = descendantElements.filter(not(isPositioned)).filter(isFloating); // 4. the non-positioned floats.
	    var inFlow = descendantNonFloats.filter(not(isPositioned)).filter(inlineLevel); // 5. the in-flow, inline-level, non-positioned descendants, including inline tables and inline blocks.
	    var stackLevel0 = stack.contexts.concat(descendantNonFloats.filter(isPositioned)).filter(zIndex0); // 6. the child stacking contexts with stack level 0 and the positioned descendants with stack level 0.
	    var text = stack.children.filter(isTextNode).filter(hasText);
	    var positiveZindex = stack.contexts.filter(positiveZIndex); // 7. the child stacking contexts with positive stack levels (least positive first).
	    negativeZindex.concat(nonInlineNonPositionedDescendants).concat(nonPositionedFloats).concat(inFlow).concat(stackLevel0).concat(text).concat(positiveZindex).forEach(function (container) {
	        this.renderQueue.push(container);
	        if (isStackingContext(container)) {
	            this.parse(container);
	            this.renderQueue.push(new ClearTransform());
	        }
	    }, this);
	};

	NodeParser.prototype.paint = function (container) {
	    try {
	        if (container instanceof ClearTransform) {
	            this.renderer.ctx.restore();
	        } else if (isTextNode(container)) {
	            if (isPseudoElement(container.parent)) {
	                container.parent.appendToDOM();
	            }
	            this.paintText(container);
	            if (isPseudoElement(container.parent)) {
	                container.parent.cleanDOM();
	            }
	        } else {
	            this.paintNode(container);
	        }
	    } catch (e) {
	        log(e);
	        if (this.options.strict) {
	            throw e;
	        }
	    }
	};

	NodeParser.prototype.paintNode = function (container) {
	    if (isStackingContext(container)) {
	        this.renderer.setOpacity(container.opacity);
	        this.renderer.ctx.save();
	        if (container.hasTransform()) {
	            this.renderer.setTransform(container.parseTransform());
	        }
	    }

	    if (container.node.nodeName === "INPUT" && container.node.type === "checkbox") {
	        this.paintCheckbox(container);
	    } else if (container.node.nodeName === "INPUT" && container.node.type === "radio") {
	        this.paintRadio(container);
	    } else {
	        this.paintElement(container);
	    }
	};

	NodeParser.prototype.paintElement = function (container) {
	    var bounds = container.parseBounds();
	    this.renderer.clip(container.backgroundClip, function () {
	        this.renderer.renderBackground(container, bounds, container.borders.borders.map(getWidth));
	    }, this);

	    this.renderer.clip(container.clip, function () {
	        this.renderer.renderBorders(container.borders.borders);
	    }, this);

	    this.renderer.clip(container.backgroundClip, function () {
	        switch (container.node.nodeName) {
	            case "svg":
	            case "IFRAME":
	                var imgContainer = this.images.get(container.node);
	                if (imgContainer) {
	                    this.renderer.renderImage(container, bounds, container.borders, imgContainer);
	                } else {
	                    log("Error loading <" + container.node.nodeName + ">", container.node);
	                }
	                break;
	            case "IMG":
	                var imageContainer = this.images.get(container.node.src);
	                if (imageContainer) {
	                    this.renderer.renderImage(container, bounds, container.borders, imageContainer);
	                } else {
	                    log("Error loading <img>", container.node.src);
	                }
	                break;
	            case "CANVAS":
	                this.renderer.renderImage(container, bounds, container.borders, { image: container.node });
	                break;
	            case "SELECT":
	            case "INPUT":
	            case "TEXTAREA":
	                this.paintFormValue(container);
	                break;
	        }
	    }, this);
	};

	NodeParser.prototype.paintCheckbox = function (container) {
	    var b = container.parseBounds();

	    var size = Math.min(b.width, b.height);
	    var bounds = { width: size - 1, height: size - 1, top: b.top, left: b.left };
	    var r = [3, 3];
	    var radius = [r, r, r, r];
	    var borders = [1, 1, 1, 1].map(function (w) {
	        return { color: new Color('#A5A5A5'), width: w };
	    });

	    var borderPoints = calculateCurvePoints(bounds, radius, borders);

	    this.renderer.clip(container.backgroundClip, function () {
	        this.renderer.rectangle(bounds.left + 1, bounds.top + 1, bounds.width - 2, bounds.height - 2, new Color("#DEDEDE"));
	        this.renderer.renderBorders(calculateBorders(borders, bounds, borderPoints, radius));
	        if (container.node.checked) {
	            this.renderer.font(new Color('#424242'), 'normal', 'normal', 'bold', size - 3 + "px", 'arial');
	            this.renderer.text('\u2714', bounds.left + size / 6, bounds.top + size - 1);
	        }
	    }, this);
	};

	NodeParser.prototype.paintRadio = function (container) {
	    var bounds = container.parseBounds();

	    var size = Math.min(bounds.width, bounds.height) - 2;

	    this.renderer.clip(container.backgroundClip, function () {
	        this.renderer.circleStroke(bounds.left + 1, bounds.top + 1, size, new Color('#DEDEDE'), 1, new Color('#A5A5A5'));
	        if (container.node.checked) {
	            this.renderer.circle(Math.ceil(bounds.left + size / 4) + 1, Math.ceil(bounds.top + size / 4) + 1, Math.floor(size / 2), new Color('#424242'));
	        }
	    }, this);
	};

	NodeParser.prototype.paintFormValue = function (container) {
	    var value = container.getValue();
	    if (value.length > 0) {
	        var document = container.node.ownerDocument;
	        var wrapper = document.createElement('html2canvaswrapper');
	        var properties = ['lineHeight', 'textAlign', 'fontFamily', 'fontWeight', 'fontSize', 'color', 'paddingLeft', 'paddingTop', 'paddingRight', 'paddingBottom', 'width', 'height', 'borderLeftStyle', 'borderTopStyle', 'borderLeftWidth', 'borderTopWidth', 'boxSizing', 'whiteSpace', 'wordWrap'];

	        properties.forEach(function (property) {
	            try {
	                wrapper.style[property] = container.css(property);
	            } catch (e) {
	                // Older IE has issues with "border"
	                log("html2canvas: Parse: Exception caught in renderFormValue: " + e.message);
	            }
	        });
	        var bounds = container.parseBounds();
	        wrapper.style.position = "fixed";
	        wrapper.style.left = bounds.left + "px";
	        wrapper.style.top = bounds.top + "px";
	        wrapper.textContent = value;
	        document.body.appendChild(wrapper);
	        this.paintText(new TextContainer(wrapper.firstChild, container));
	        document.body.removeChild(wrapper);
	    }
	};

	NodeParser.prototype.paintText = function (container) {
	    container.applyTextTransform();
	    var characters = punycode.ucs2.decode(container.node.data);
	    var textList = (!this.options.letterRendering || noLetterSpacing(container)) && !hasUnicode(container.node.data) ? getWords(characters) : characters.map(function (character) {
	        return punycode.ucs2.encode([character]);
	    });

	    var weight = container.parent.fontWeight();
	    var size = container.parent.css('fontSize');
	    var family = container.parent.css('fontFamily');
	    var shadows = container.parent.parseTextShadows();

	    this.renderer.font(container.parent.color('color'), container.parent.css('fontStyle'), container.parent.css('fontVariant'), weight, size, family);
	    if (shadows.length) {
	        // TODO: support multiple text shadows
	        this.renderer.fontShadow(shadows[0].color, shadows[0].offsetX, shadows[0].offsetY, shadows[0].blur);
	    } else {
	        this.renderer.clearShadow();
	    }

	    this.renderer.clip(container.parent.clip, function () {
	        textList.map(this.parseTextBounds(container), this).forEach(function (bounds, index) {
	            if (bounds) {
	                this.renderer.text(textList[index], bounds.left, bounds.bottom);
	                this.renderTextDecoration(container.parent, bounds, this.fontMetrics.getMetrics(family, size));
	            }
	        }, this);
	    }, this);
	};

	NodeParser.prototype.renderTextDecoration = function (container, bounds, metrics) {
	    switch (container.css("textDecoration").split(" ")[0]) {
	        case "underline":
	            // Draws a line at the baseline of the font
	            // TODO As some browsers display the line as more than 1px if the font-size is big, need to take that into account both in position and size
	            this.renderer.rectangle(bounds.left, Math.round(bounds.top + metrics.baseline + metrics.lineWidth), bounds.width, 1, container.color("color"));
	            break;
	        case "overline":
	            this.renderer.rectangle(bounds.left, Math.round(bounds.top), bounds.width, 1, container.color("color"));
	            break;
	        case "line-through":
	            // TODO try and find exact position for line-through
	            this.renderer.rectangle(bounds.left, Math.ceil(bounds.top + metrics.middle + metrics.lineWidth), bounds.width, 1, container.color("color"));
	            break;
	    }
	};

	var borderColorTransforms = {
	    inset: [["darken", 0.60], ["darken", 0.10], ["darken", 0.10], ["darken", 0.60]]
	};

	NodeParser.prototype.parseBorders = function (container) {
	    var nodeBounds = container.parseBounds();
	    var radius = getBorderRadiusData(container);
	    var borders = ["Top", "Right", "Bottom", "Left"].map(function (side, index) {
	        var style = container.css('border' + side + 'Style');
	        var color = container.color('border' + side + 'Color');
	        if (style === "inset" && color.isBlack()) {
	            color = new Color([255, 255, 255, color.a]); // this is wrong, but
	        }
	        var colorTransform = borderColorTransforms[style] ? borderColorTransforms[style][index] : null;
	        return {
	            width: container.cssInt('border' + side + 'Width'),
	            color: colorTransform ? color[colorTransform[0]](colorTransform[1]) : color,
	            args: null
	        };
	    });
	    var borderPoints = calculateCurvePoints(nodeBounds, radius, borders);

	    return {
	        clip: this.parseBackgroundClip(container, borderPoints, borders, radius, nodeBounds),
	        borders: calculateBorders(borders, nodeBounds, borderPoints, radius)
	    };
	};

	function calculateBorders(borders, nodeBounds, borderPoints, radius) {
	    return borders.map(function (border, borderSide) {
	        if (border.width > 0) {
	            var bx = nodeBounds.left;
	            var by = nodeBounds.top;
	            var bw = nodeBounds.width;
	            var bh = nodeBounds.height - borders[2].width;

	            switch (borderSide) {
	                case 0:
	                    // top border
	                    bh = borders[0].width;
	                    border.args = drawSide({
	                        c1: [bx, by],
	                        c2: [bx + bw, by],
	                        c3: [bx + bw - borders[1].width, by + bh],
	                        c4: [bx + borders[3].width, by + bh]
	                    }, radius[0], radius[1], borderPoints.topLeftOuter, borderPoints.topLeftInner, borderPoints.topRightOuter, borderPoints.topRightInner);
	                    break;
	                case 1:
	                    // right border
	                    bx = nodeBounds.left + nodeBounds.width - borders[1].width;
	                    bw = borders[1].width;

	                    border.args = drawSide({
	                        c1: [bx + bw, by],
	                        c2: [bx + bw, by + bh + borders[2].width],
	                        c3: [bx, by + bh],
	                        c4: [bx, by + borders[0].width]
	                    }, radius[1], radius[2], borderPoints.topRightOuter, borderPoints.topRightInner, borderPoints.bottomRightOuter, borderPoints.bottomRightInner);
	                    break;
	                case 2:
	                    // bottom border
	                    by = by + nodeBounds.height - borders[2].width;
	                    bh = borders[2].width;
	                    border.args = drawSide({
	                        c1: [bx + bw, by + bh],
	                        c2: [bx, by + bh],
	                        c3: [bx + borders[3].width, by],
	                        c4: [bx + bw - borders[3].width, by]
	                    }, radius[2], radius[3], borderPoints.bottomRightOuter, borderPoints.bottomRightInner, borderPoints.bottomLeftOuter, borderPoints.bottomLeftInner);
	                    break;
	                case 3:
	                    // left border
	                    bw = borders[3].width;
	                    border.args = drawSide({
	                        c1: [bx, by + bh + borders[2].width],
	                        c2: [bx, by],
	                        c3: [bx + bw, by + borders[0].width],
	                        c4: [bx + bw, by + bh]
	                    }, radius[3], radius[0], borderPoints.bottomLeftOuter, borderPoints.bottomLeftInner, borderPoints.topLeftOuter, borderPoints.topLeftInner);
	                    break;
	            }
	        }
	        return border;
	    });
	}

	NodeParser.prototype.parseBackgroundClip = function (container, borderPoints, borders, radius, bounds) {
	    var backgroundClip = container.css('backgroundClip'),
	        borderArgs = [];

	    switch (backgroundClip) {
	        case "content-box":
	        case "padding-box":
	            parseCorner(borderArgs, radius[0], radius[1], borderPoints.topLeftInner, borderPoints.topRightInner, bounds.left + borders[3].width, bounds.top + borders[0].width);
	            parseCorner(borderArgs, radius[1], radius[2], borderPoints.topRightInner, borderPoints.bottomRightInner, bounds.left + bounds.width - borders[1].width, bounds.top + borders[0].width);
	            parseCorner(borderArgs, radius[2], radius[3], borderPoints.bottomRightInner, borderPoints.bottomLeftInner, bounds.left + bounds.width - borders[1].width, bounds.top + bounds.height - borders[2].width);
	            parseCorner(borderArgs, radius[3], radius[0], borderPoints.bottomLeftInner, borderPoints.topLeftInner, bounds.left + borders[3].width, bounds.top + bounds.height - borders[2].width);
	            break;

	        default:
	            parseCorner(borderArgs, radius[0], radius[1], borderPoints.topLeftOuter, borderPoints.topRightOuter, bounds.left, bounds.top);
	            parseCorner(borderArgs, radius[1], radius[2], borderPoints.topRightOuter, borderPoints.bottomRightOuter, bounds.left + bounds.width, bounds.top);
	            parseCorner(borderArgs, radius[2], radius[3], borderPoints.bottomRightOuter, borderPoints.bottomLeftOuter, bounds.left + bounds.width, bounds.top + bounds.height);
	            parseCorner(borderArgs, radius[3], radius[0], borderPoints.bottomLeftOuter, borderPoints.topLeftOuter, bounds.left, bounds.top + bounds.height);
	            break;
	    }

	    return borderArgs;
	};

	function getCurvePoints(x, y, r1, r2) {
	    var kappa = 4 * ((Math.sqrt(2) - 1) / 3);
	    var ox = r1 * kappa,
	        // control point offset horizontal
	    oy = r2 * kappa,
	        // control point offset vertical
	    xm = x + r1,
	        // x-middle
	    ym = y + r2; // y-middle
	    return {
	        topLeft: bezierCurve({ x: x, y: ym }, { x: x, y: ym - oy }, { x: xm - ox, y: y }, { x: xm, y: y }),
	        topRight: bezierCurve({ x: x, y: y }, { x: x + ox, y: y }, { x: xm, y: ym - oy }, { x: xm, y: ym }),
	        bottomRight: bezierCurve({ x: xm, y: y }, { x: xm, y: y + oy }, { x: x + ox, y: ym }, { x: x, y: ym }),
	        bottomLeft: bezierCurve({ x: xm, y: ym }, { x: xm - ox, y: ym }, { x: x, y: y + oy }, { x: x, y: y })
	    };
	}

	function calculateCurvePoints(bounds, borderRadius, borders) {
	    var x = bounds.left,
	        y = bounds.top,
	        width = bounds.width,
	        height = bounds.height,
	        tlh = borderRadius[0][0] < width / 2 ? borderRadius[0][0] : width / 2,
	        tlv = borderRadius[0][1] < height / 2 ? borderRadius[0][1] : height / 2,
	        trh = borderRadius[1][0] < width / 2 ? borderRadius[1][0] : width / 2,
	        trv = borderRadius[1][1] < height / 2 ? borderRadius[1][1] : height / 2,
	        brh = borderRadius[2][0] < width / 2 ? borderRadius[2][0] : width / 2,
	        brv = borderRadius[2][1] < height / 2 ? borderRadius[2][1] : height / 2,
	        blh = borderRadius[3][0] < width / 2 ? borderRadius[3][0] : width / 2,
	        blv = borderRadius[3][1] < height / 2 ? borderRadius[3][1] : height / 2;

	    var topWidth = width - trh,
	        rightHeight = height - brv,
	        bottomWidth = width - brh,
	        leftHeight = height - blv;

	    return {
	        topLeftOuter: getCurvePoints(x, y, tlh, tlv).topLeft.subdivide(0.5),
	        topLeftInner: getCurvePoints(x + borders[3].width, y + borders[0].width, Math.max(0, tlh - borders[3].width), Math.max(0, tlv - borders[0].width)).topLeft.subdivide(0.5),
	        topRightOuter: getCurvePoints(x + topWidth, y, trh, trv).topRight.subdivide(0.5),
	        topRightInner: getCurvePoints(x + Math.min(topWidth, width + borders[3].width), y + borders[0].width, topWidth > width + borders[3].width ? 0 : trh - borders[3].width, trv - borders[0].width).topRight.subdivide(0.5),
	        bottomRightOuter: getCurvePoints(x + bottomWidth, y + rightHeight, brh, brv).bottomRight.subdivide(0.5),
	        bottomRightInner: getCurvePoints(x + Math.min(bottomWidth, width - borders[3].width), y + Math.min(rightHeight, height + borders[0].width), Math.max(0, brh - borders[1].width), brv - borders[2].width).bottomRight.subdivide(0.5),
	        bottomLeftOuter: getCurvePoints(x, y + leftHeight, blh, blv).bottomLeft.subdivide(0.5),
	        bottomLeftInner: getCurvePoints(x + borders[3].width, y + leftHeight, Math.max(0, blh - borders[3].width), blv - borders[2].width).bottomLeft.subdivide(0.5)
	    };
	}

	function bezierCurve(start, startControl, endControl, end) {
	    var lerp = function lerp(a, b, t) {
	        return {
	            x: a.x + (b.x - a.x) * t,
	            y: a.y + (b.y - a.y) * t
	        };
	    };

	    return {
	        start: start,
	        startControl: startControl,
	        endControl: endControl,
	        end: end,
	        subdivide: function subdivide(t) {
	            var ab = lerp(start, startControl, t),
	                bc = lerp(startControl, endControl, t),
	                cd = lerp(endControl, end, t),
	                abbc = lerp(ab, bc, t),
	                bccd = lerp(bc, cd, t),
	                dest = lerp(abbc, bccd, t);
	            return [bezierCurve(start, ab, abbc, dest), bezierCurve(dest, bccd, cd, end)];
	        },
	        curveTo: function curveTo(borderArgs) {
	            borderArgs.push(["bezierCurve", startControl.x, startControl.y, endControl.x, endControl.y, end.x, end.y]);
	        },
	        curveToReversed: function curveToReversed(borderArgs) {
	            borderArgs.push(["bezierCurve", endControl.x, endControl.y, startControl.x, startControl.y, start.x, start.y]);
	        }
	    };
	}

	function drawSide(borderData, radius1, radius2, outer1, inner1, outer2, inner2) {
	    var borderArgs = [];

	    if (radius1[0] > 0 || radius1[1] > 0) {
	        borderArgs.push(["line", outer1[1].start.x, outer1[1].start.y]);
	        outer1[1].curveTo(borderArgs);
	    } else {
	        borderArgs.push(["line", borderData.c1[0], borderData.c1[1]]);
	    }

	    if (radius2[0] > 0 || radius2[1] > 0) {
	        borderArgs.push(["line", outer2[0].start.x, outer2[0].start.y]);
	        outer2[0].curveTo(borderArgs);
	        borderArgs.push(["line", inner2[0].end.x, inner2[0].end.y]);
	        inner2[0].curveToReversed(borderArgs);
	    } else {
	        borderArgs.push(["line", borderData.c2[0], borderData.c2[1]]);
	        borderArgs.push(["line", borderData.c3[0], borderData.c3[1]]);
	    }

	    if (radius1[0] > 0 || radius1[1] > 0) {
	        borderArgs.push(["line", inner1[1].end.x, inner1[1].end.y]);
	        inner1[1].curveToReversed(borderArgs);
	    } else {
	        borderArgs.push(["line", borderData.c4[0], borderData.c4[1]]);
	    }

	    return borderArgs;
	}

	function parseCorner(borderArgs, radius1, radius2, corner1, corner2, x, y) {
	    if (radius1[0] > 0 || radius1[1] > 0) {
	        borderArgs.push(["line", corner1[0].start.x, corner1[0].start.y]);
	        corner1[0].curveTo(borderArgs);
	        corner1[1].curveTo(borderArgs);
	    } else {
	        borderArgs.push(["line", x, y]);
	    }

	    if (radius2[0] > 0 || radius2[1] > 0) {
	        borderArgs.push(["line", corner2[0].start.x, corner2[0].start.y]);
	    }
	}

	function negativeZIndex(container) {
	    return container.cssInt("zIndex") < 0;
	}

	function positiveZIndex(container) {
	    return container.cssInt("zIndex") > 0;
	}

	function zIndex0(container) {
	    return container.cssInt("zIndex") === 0;
	}

	function inlineLevel(container) {
	    return ["inline", "inline-block", "inline-table"].indexOf(container.css("display")) !== -1;
	}

	function isStackingContext(container) {
	    return container instanceof StackingContext;
	}

	function hasText(container) {
	    return container.node.data.trim().length > 0;
	}

	function noLetterSpacing(container) {
	    return (/^(normal|none|0px)$/.test(container.parent.css("letterSpacing"))
	    );
	}

	function getBorderRadiusData(container) {
	    return ["TopLeft", "TopRight", "BottomRight", "BottomLeft"].map(function (side) {
	        var value = container.css('border' + side + 'Radius');
	        var arr = value.split(" ");
	        if (arr.length <= 1) {
	            arr[1] = arr[0];
	        }
	        return arr.map(asInt);
	    });
	}

	function renderableNode(node) {
	    return node.nodeType === Node.TEXT_NODE || node.nodeType === Node.ELEMENT_NODE;
	}

	function isPositionedForStacking(container) {
	    var position = container.css("position");
	    var zIndex = ["absolute", "relative", "fixed"].indexOf(position) !== -1 ? container.css("zIndex") : "auto";
	    return zIndex !== "auto";
	}

	function isPositioned(container) {
	    return container.css("position") !== "static";
	}

	function isFloating(container) {
	    return container.css("float") !== "none";
	}

	function isInlineBlock(container) {
	    return ["inline-block", "inline-table"].indexOf(container.css("display")) !== -1;
	}

	function not(callback) {
	    var context = this;
	    return function () {
	        return !callback.apply(context, arguments);
	    };
	}

	function isElement(container) {
	    return container.node.nodeType === Node.ELEMENT_NODE;
	}

	function isPseudoElement(container) {
	    return container.isPseudoElement === true;
	}

	function isTextNode(container) {
	    return container.node.nodeType === Node.TEXT_NODE;
	}

	function zIndexSort(contexts) {
	    return function (a, b) {
	        return a.cssInt("zIndex") + contexts.indexOf(a) / contexts.length - (b.cssInt("zIndex") + contexts.indexOf(b) / contexts.length);
	    };
	}

	function hasOpacity(container) {
	    return container.getOpacity() < 1;
	}

	function asInt(value) {
	    return parseInt(value, 10);
	}

	function getWidth(border) {
	    return border.width;
	}

	function nonIgnoredElement(nodeContainer) {
	    return nodeContainer.node.nodeType !== Node.ELEMENT_NODE || ["SCRIPT", "HEAD", "TITLE", "OBJECT", "BR", "OPTION"].indexOf(nodeContainer.node.nodeName) === -1;
	}

	function flatten(arrays) {
	    return [].concat.apply([], arrays);
	}

	function stripQuotes(content) {
	    var first = content.substr(0, 1);
	    return first === content.substr(content.length - 1) && first.match(/'|"/) ? content.substr(1, content.length - 2) : content;
	}

	function getWords(characters) {
	    var words = [],
	        i = 0,
	        onWordBoundary = false,
	        word;
	    while (characters.length) {
	        if (isWordBoundary(characters[i]) === onWordBoundary) {
	            word = characters.splice(0, i);
	            if (word.length) {
	                words.push(punycode.ucs2.encode(word));
	            }
	            onWordBoundary = !onWordBoundary;
	            i = 0;
	        } else {
	            i++;
	        }

	        if (i >= characters.length) {
	            word = characters.splice(0, i);
	            if (word.length) {
	                words.push(punycode.ucs2.encode(word));
	            }
	        }
	    }
	    return words;
	}

	function isWordBoundary(characterCode) {
	    return [32, // <space>
	    13, // \r
	    10, // \n
	    9, // \t
	    45 // -
	    ].indexOf(characterCode) !== -1;
	}

	function hasUnicode(string) {
	    return (/[^\u0000-\u00ff]/.test(string)
	    );
	}

	module.exports = NodeParser;

/***/ }),
/* 22 */
/***/ (function(module, exports, __webpack_require__) {

	var __WEBPACK_AMD_DEFINE_RESULT__;/* WEBPACK VAR INJECTION */(function(module, global) {/*! https://mths.be/punycode v1.4.1 by @mathias */
	;(function(root) {

		/** Detect free variables */
		var freeExports = typeof exports == 'object' && exports &&
			!exports.nodeType && exports;
		var freeModule = typeof module == 'object' && module &&
			!module.nodeType && module;
		var freeGlobal = typeof global == 'object' && global;
		if (
			freeGlobal.global === freeGlobal ||
			freeGlobal.window === freeGlobal ||
			freeGlobal.self === freeGlobal
		) {
			root = freeGlobal;
		}

		/**
		 * The `punycode` object.
		 * @name punycode
		 * @type Object
		 */
		var punycode,

		/** Highest positive signed 32-bit float value */
		maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1

		/** Bootstring parameters */
		base = 36,
		tMin = 1,
		tMax = 26,
		skew = 38,
		damp = 700,
		initialBias = 72,
		initialN = 128, // 0x80
		delimiter = '-', // '\x2D'

		/** Regular expressions */
		regexPunycode = /^xn--/,
		regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
		regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators

		/** Error messages */
		errors = {
			'overflow': 'Overflow: input needs wider integers to process',
			'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
			'invalid-input': 'Invalid input'
		},

		/** Convenience shortcuts */
		baseMinusTMin = base - tMin,
		floor = Math.floor,
		stringFromCharCode = String.fromCharCode,

		/** Temporary variable */
		key;

		/*--------------------------------------------------------------------------*/

		/**
		 * A generic error utility function.
		 * @private
		 * @param {String} type The error type.
		 * @returns {Error} Throws a `RangeError` with the applicable error message.
		 */
		function error(type) {
			throw new RangeError(errors[type]);
		}

		/**
		 * A generic `Array#map` utility function.
		 * @private
		 * @param {Array} array The array to iterate over.
		 * @param {Function} callback The function that gets called for every array
		 * item.
		 * @returns {Array} A new array of values returned by the callback function.
		 */
		function map(array, fn) {
			var length = array.length;
			var result = [];
			while (length--) {
				result[length] = fn(array[length]);
			}
			return result;
		}

		/**
		 * A simple `Array#map`-like wrapper to work with domain name strings or email
		 * addresses.
		 * @private
		 * @param {String} domain The domain name or email address.
		 * @param {Function} callback The function that gets called for every
		 * character.
		 * @returns {Array} A new string of characters returned by the callback
		 * function.
		 */
		function mapDomain(string, fn) {
			var parts = string.split('@');
			var result = '';
			if (parts.length > 1) {
				// In email addresses, only the domain name should be punycoded. Leave
				// the local part (i.e. everything up to `@`) intact.
				result = parts[0] + '@';
				string = parts[1];
			}
			// Avoid `split(regex)` for IE8 compatibility. See #17.
			string = string.replace(regexSeparators, '\x2E');
			var labels = string.split('.');
			var encoded = map(labels, fn).join('.');
			return result + encoded;
		}

		/**
		 * Creates an array containing the numeric code points of each Unicode
		 * character in the string. While JavaScript uses UCS-2 internally,
		 * this function will convert a pair of surrogate halves (each of which
		 * UCS-2 exposes as separate characters) into a single code point,
		 * matching UTF-16.
		 * @see `punycode.ucs2.encode`
		 * @see <https://mathiasbynens.be/notes/javascript-encoding>
		 * @memberOf punycode.ucs2
		 * @name decode
		 * @param {String} string The Unicode input string (UCS-2).
		 * @returns {Array} The new array of code points.
		 */
		function ucs2decode(string) {
			var output = [],
			    counter = 0,
			    length = string.length,
			    value,
			    extra;
			while (counter < length) {
				value = string.charCodeAt(counter++);
				if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
					// high surrogate, and there is a next character
					extra = string.charCodeAt(counter++);
					if ((extra & 0xFC00) == 0xDC00) { // low surrogate
						output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
					} else {
						// unmatched surrogate; only append this code unit, in case the next
						// code unit is the high surrogate of a surrogate pair
						output.push(value);
						counter--;
					}
				} else {
					output.push(value);
				}
			}
			return output;
		}

		/**
		 * Creates a string based on an array of numeric code points.
		 * @see `punycode.ucs2.decode`
		 * @memberOf punycode.ucs2
		 * @name encode
		 * @param {Array} codePoints The array of numeric code points.
		 * @returns {String} The new Unicode string (UCS-2).
		 */
		function ucs2encode(array) {
			return map(array, function(value) {
				var output = '';
				if (value > 0xFFFF) {
					value -= 0x10000;
					output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
					value = 0xDC00 | value & 0x3FF;
				}
				output += stringFromCharCode(value);
				return output;
			}).join('');
		}

		/**
		 * Converts a basic code point into a digit/integer.
		 * @see `digitToBasic()`
		 * @private
		 * @param {Number} codePoint The basic numeric code point value.
		 * @returns {Number} The numeric value of a basic code point (for use in
		 * representing integers) in the range `0` to `base - 1`, or `base` if
		 * the code point does not represent a value.
		 */
		function basicToDigit(codePoint) {
			if (codePoint - 48 < 10) {
				return codePoint - 22;
			}
			if (codePoint - 65 < 26) {
				return codePoint - 65;
			}
			if (codePoint - 97 < 26) {
				return codePoint - 97;
			}
			return base;
		}

		/**
		 * Converts a digit/integer into a basic code point.
		 * @see `basicToDigit()`
		 * @private
		 * @param {Number} digit The numeric value of a basic code point.
		 * @returns {Number} The basic code point whose value (when used for
		 * representing integers) is `digit`, which needs to be in the range
		 * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
		 * used; else, the lowercase form is used. The behavior is undefined
		 * if `flag` is non-zero and `digit` has no uppercase form.
		 */
		function digitToBasic(digit, flag) {
			//  0..25 map to ASCII a..z or A..Z
			// 26..35 map to ASCII 0..9
			return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
		}

		/**
		 * Bias adaptation function as per section 3.4 of RFC 3492.
		 * https://tools.ietf.org/html/rfc3492#section-3.4
		 * @private
		 */
		function adapt(delta, numPoints, firstTime) {
			var k = 0;
			delta = firstTime ? floor(delta / damp) : delta >> 1;
			delta += floor(delta / numPoints);
			for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
				delta = floor(delta / baseMinusTMin);
			}
			return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
		}

		/**
		 * Converts a Punycode string of ASCII-only symbols to a string of Unicode
		 * symbols.
		 * @memberOf punycode
		 * @param {String} input The Punycode string of ASCII-only symbols.
		 * @returns {String} The resulting string of Unicode symbols.
		 */
		function decode(input) {
			// Don't use UCS-2
			var output = [],
			    inputLength = input.length,
			    out,
			    i = 0,
			    n = initialN,
			    bias = initialBias,
			    basic,
			    j,
			    index,
			    oldi,
			    w,
			    k,
			    digit,
			    t,
			    /** Cached calculation results */
			    baseMinusT;

			// Handle the basic code points: let `basic` be the number of input code
			// points before the last delimiter, or `0` if there is none, then copy
			// the first basic code points to the output.

			basic = input.lastIndexOf(delimiter);
			if (basic < 0) {
				basic = 0;
			}

			for (j = 0; j < basic; ++j) {
				// if it's not a basic code point
				if (input.charCodeAt(j) >= 0x80) {
					error('not-basic');
				}
				output.push(input.charCodeAt(j));
			}

			// Main decoding loop: start just after the last delimiter if any basic code
			// points were copied; start at the beginning otherwise.

			for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {

				// `index` is the index of the next character to be consumed.
				// Decode a generalized variable-length integer into `delta`,
				// which gets added to `i`. The overflow checking is easier
				// if we increase `i` as we go, then subtract off its starting
				// value at the end to obtain `delta`.
				for (oldi = i, w = 1, k = base; /* no condition */; k += base) {

					if (index >= inputLength) {
						error('invalid-input');
					}

					digit = basicToDigit(input.charCodeAt(index++));

					if (digit >= base || digit > floor((maxInt - i) / w)) {
						error('overflow');
					}

					i += digit * w;
					t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);

					if (digit < t) {
						break;
					}

					baseMinusT = base - t;
					if (w > floor(maxInt / baseMinusT)) {
						error('overflow');
					}

					w *= baseMinusT;

				}

				out = output.length + 1;
				bias = adapt(i - oldi, out, oldi == 0);

				// `i` was supposed to wrap around from `out` to `0`,
				// incrementing `n` each time, so we'll fix that now:
				if (floor(i / out) > maxInt - n) {
					error('overflow');
				}

				n += floor(i / out);
				i %= out;

				// Insert `n` at position `i` of the output
				output.splice(i++, 0, n);

			}

			return ucs2encode(output);
		}

		/**
		 * Converts a string of Unicode symbols (e.g. a domain name label) to a
		 * Punycode string of ASCII-only symbols.
		 * @memberOf punycode
		 * @param {String} input The string of Unicode symbols.
		 * @returns {String} The resulting Punycode string of ASCII-only symbols.
		 */
		function encode(input) {
			var n,
			    delta,
			    handledCPCount,
			    basicLength,
			    bias,
			    j,
			    m,
			    q,
			    k,
			    t,
			    currentValue,
			    output = [],
			    /** `inputLength` will hold the number of code points in `input`. */
			    inputLength,
			    /** Cached calculation results */
			    handledCPCountPlusOne,
			    baseMinusT,
			    qMinusT;

			// Convert the input in UCS-2 to Unicode
			input = ucs2decode(input);

			// Cache the length
			inputLength = input.length;

			// Initialize the state
			n = initialN;
			delta = 0;
			bias = initialBias;

			// Handle the basic code points
			for (j = 0; j < inputLength; ++j) {
				currentValue = input[j];
				if (currentValue < 0x80) {
					output.push(stringFromCharCode(currentValue));
				}
			}

			handledCPCount = basicLength = output.length;

			// `handledCPCount` is the number of code points that have been handled;
			// `basicLength` is the number of basic code points.

			// Finish the basic string - if it is not empty - with a delimiter
			if (basicLength) {
				output.push(delimiter);
			}

			// Main encoding loop:
			while (handledCPCount < inputLength) {

				// All non-basic code points < n have been handled already. Find the next
				// larger one:
				for (m = maxInt, j = 0; j < inputLength; ++j) {
					currentValue = input[j];
					if (currentValue >= n && currentValue < m) {
						m = currentValue;
					}
				}

				// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
				// but guard against overflow
				handledCPCountPlusOne = handledCPCount + 1;
				if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
					error('overflow');
				}

				delta += (m - n) * handledCPCountPlusOne;
				n = m;

				for (j = 0; j < inputLength; ++j) {
					currentValue = input[j];

					if (currentValue < n && ++delta > maxInt) {
						error('overflow');
					}

					if (currentValue == n) {
						// Represent delta as a generalized variable-length integer
						for (q = delta, k = base; /* no condition */; k += base) {
							t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
							if (q < t) {
								break;
							}
							qMinusT = q - t;
							baseMinusT = base - t;
							output.push(
								stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
							);
							q = floor(qMinusT / baseMinusT);
						}

						output.push(stringFromCharCode(digitToBasic(q, 0)));
						bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
						delta = 0;
						++handledCPCount;
					}
				}

				++delta;
				++n;

			}
			return output.join('');
		}

		/**
		 * Converts a Punycode string representing a domain name or an email address
		 * to Unicode. Only the Punycoded parts of the input will be converted, i.e.
		 * it doesn't matter if you call it on a string that has already been
		 * converted to Unicode.
		 * @memberOf punycode
		 * @param {String} input The Punycoded domain name or email address to
		 * convert to Unicode.
		 * @returns {String} The Unicode representation of the given Punycode
		 * string.
		 */
		function toUnicode(input) {
			return mapDomain(input, function(string) {
				return regexPunycode.test(string)
					? decode(string.slice(4).toLowerCase())
					: string;
			});
		}

		/**
		 * Converts a Unicode string representing a domain name or an email address to
		 * Punycode. Only the non-ASCII parts of the domain name will be converted,
		 * i.e. it doesn't matter if you call it with a domain that's already in
		 * ASCII.
		 * @memberOf punycode
		 * @param {String} input The domain name or email address to convert, as a
		 * Unicode string.
		 * @returns {String} The Punycode representation of the given domain name or
		 * email address.
		 */
		function toASCII(input) {
			return mapDomain(input, function(string) {
				return regexNonASCII.test(string)
					? 'xn--' + encode(string)
					: string;
			});
		}

		/*--------------------------------------------------------------------------*/

		/** Define the public API */
		punycode = {
			/**
			 * A string representing the current Punycode.js version number.
			 * @memberOf punycode
			 * @type String
			 */
			'version': '1.4.1',
			/**
			 * An object of methods to convert from JavaScript's internal character
			 * representation (UCS-2) to Unicode code points, and back.
			 * @see <https://mathiasbynens.be/notes/javascript-encoding>
			 * @memberOf punycode
			 * @type Object
			 */
			'ucs2': {
				'decode': ucs2decode,
				'encode': ucs2encode
			},
			'decode': decode,
			'encode': encode,
			'toASCII': toASCII,
			'toUnicode': toUnicode
		};

		/** Expose `punycode` */
		// Some AMD build optimizers, like r.js, check for specific condition patterns
		// like the following:
		if (
			true
		) {
			!(__WEBPACK_AMD_DEFINE_RESULT__ = function() {
				return punycode;
			}.call(exports, __webpack_require__, exports, module), __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
		} else if (freeExports && freeModule) {
			if (module.exports == freeExports) {
				// in Node.js, io.js, or RingoJS v0.8.0+
				freeModule.exports = punycode;
			} else {
				// in Narwhal or RingoJS v0.7.0-
				for (key in punycode) {
					punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
				}
			}
		} else {
			// in Rhino or a web browser
			root.punycode = punycode;
		}

	}(this));

	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(23)(module), (function() { return this; }())))

/***/ }),
/* 23 */
/***/ (function(module, exports) {

	module.exports = function(module) {
		if(!module.webpackPolyfill) {
			module.deprecate = function() {};
			module.paths = [];
			// module.parent = undefined by default
			module.children = [];
			module.webpackPolyfill = 1;
		}
		return module;
	}


/***/ }),
/* 24 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var Color = __webpack_require__(8);
	var utils = __webpack_require__(12);
	var getBounds = utils.getBounds;
	var parseBackgrounds = utils.parseBackgrounds;
	var offsetBounds = utils.offsetBounds;

	function NodeContainer(node, parent) {
	    this.node = node;
	    this.parent = parent;
	    this.stack = null;
	    this.bounds = null;
	    this.borders = null;
	    this.clip = [];
	    this.backgroundClip = [];
	    this.offsetBounds = null;
	    this.visible = null;
	    this.computedStyles = null;
	    this.colors = {};
	    this.styles = {};
	    this.backgroundImages = null;
	    this.transformData = null;
	    this.transformMatrix = null;
	    this.isPseudoElement = false;
	    this.opacity = null;
	}

	NodeContainer.prototype.cloneTo = function (stack) {
	    stack.visible = this.visible;
	    stack.borders = this.borders;
	    stack.bounds = this.bounds;
	    stack.clip = this.clip;
	    stack.backgroundClip = this.backgroundClip;
	    stack.computedStyles = this.computedStyles;
	    stack.styles = this.styles;
	    stack.backgroundImages = this.backgroundImages;
	    stack.opacity = this.opacity;
	};

	NodeContainer.prototype.getOpacity = function () {
	    return this.opacity === null ? this.opacity = this.cssFloat('opacity') : this.opacity;
	};

	NodeContainer.prototype.assignStack = function (stack) {
	    this.stack = stack;
	    stack.children.push(this);
	};

	NodeContainer.prototype.isElementVisible = function () {
	    return this.node.nodeType === Node.TEXT_NODE ? this.parent.visible : this.css('display') !== "none" && this.css('visibility') !== "hidden" && !this.node.hasAttribute("data-html2canvas-ignore") && (this.node.nodeName !== "INPUT" || this.node.getAttribute("type") !== "hidden");
	};

	NodeContainer.prototype.css = function (attribute) {
	    if (!this.computedStyles) {
	        this.computedStyles = this.isPseudoElement ? this.parent.computedStyle(this.before ? ":before" : ":after") : this.computedStyle(null);
	    }

	    return this.styles[attribute] || (this.styles[attribute] = this.computedStyles[attribute]);
	};

	NodeContainer.prototype.prefixedCss = function (attribute) {
	    var prefixes = ["webkit", "moz", "ms", "o"];
	    var value = this.css(attribute);
	    if (value === undefined) {
	        prefixes.some(function (prefix) {
	            value = this.css(prefix + attribute.substr(0, 1).toUpperCase() + attribute.substr(1));
	            return value !== undefined;
	        }, this);
	    }
	    return value === undefined ? null : value;
	};

	NodeContainer.prototype.computedStyle = function (type) {
	    return this.node.ownerDocument.defaultView.getComputedStyle(this.node, type);
	};

	NodeContainer.prototype.cssInt = function (attribute) {
	    var value = parseInt(this.css(attribute), 10);
	    return isNaN(value) ? 0 : value; // borders in old IE are throwing 'medium' for demo.html
	};

	NodeContainer.prototype.color = function (attribute) {
	    return this.colors[attribute] || (this.colors[attribute] = new Color(this.css(attribute)));
	};

	NodeContainer.prototype.cssFloat = function (attribute) {
	    var value = parseFloat(this.css(attribute));
	    return isNaN(value) ? 0 : value;
	};

	NodeContainer.prototype.fontWeight = function () {
	    var weight = this.css("fontWeight");
	    switch (parseInt(weight, 10)) {
	        case 401:
	            weight = "bold";
	            break;
	        case 400:
	            weight = "normal";
	            break;
	    }
	    return weight;
	};

	NodeContainer.prototype.parseClip = function () {
	    var matches = this.css('clip').match(this.CLIP);
	    if (matches) {
	        return {
	            top: parseInt(matches[1], 10),
	            right: parseInt(matches[2], 10),
	            bottom: parseInt(matches[3], 10),
	            left: parseInt(matches[4], 10)
	        };
	    }
	    return null;
	};

	NodeContainer.prototype.parseBackgroundImages = function () {
	    return this.backgroundImages || (this.backgroundImages = parseBackgrounds(this.css("backgroundImage")));
	};

	NodeContainer.prototype.cssList = function (property, index) {
	    var value = (this.css(property) || '').split(',');
	    value = value[index || 0] || value[0] || 'auto';
	    value = value.trim().split(' ');
	    if (value.length === 1) {
	        value = [value[0], isPercentage(value[0]) ? 'auto' : value[0]];
	    }
	    return value;
	};

	NodeContainer.prototype.parseBackgroundSize = function (bounds, image, index) {
	    var size = this.cssList("backgroundSize", index);
	    var width, height;

	    if (isPercentage(size[0])) {
	        width = bounds.width * parseFloat(size[0]) / 100;
	    } else if (/contain|cover/.test(size[0])) {
	        var targetRatio = bounds.width / bounds.height,
	            currentRatio = image.width / image.height;
	        return targetRatio < currentRatio ^ size[0] === 'contain' ? { width: bounds.height * currentRatio, height: bounds.height } : { width: bounds.width, height: bounds.width / currentRatio };
	    } else {
	        width = parseInt(size[0], 10);
	    }

	    if (size[0] === 'auto' && size[1] === 'auto') {
	        height = image.height;
	    } else if (size[1] === 'auto') {
	        height = width / image.width * image.height;
	    } else if (isPercentage(size[1])) {
	        height = bounds.height * parseFloat(size[1]) / 100;
	    } else {
	        height = parseInt(size[1], 10);
	    }

	    if (size[0] === 'auto') {
	        width = height / image.height * image.width;
	    }

	    return { width: width, height: height };
	};

	NodeContainer.prototype.parseBackgroundPosition = function (bounds, image, index, backgroundSize) {
	    var position = this.cssList('backgroundPosition', index);
	    var left, top;

	    if (isPercentage(position[0])) {
	        left = (bounds.width - (backgroundSize || image).width) * (parseFloat(position[0]) / 100);
	    } else {
	        left = parseInt(position[0], 10);
	    }

	    if (position[1] === 'auto') {
	        top = left / image.width * image.height;
	    } else if (isPercentage(position[1])) {
	        top = (bounds.height - (backgroundSize || image).height) * parseFloat(position[1]) / 100;
	    } else {
	        top = parseInt(position[1], 10);
	    }

	    if (position[0] === 'auto') {
	        left = top / image.height * image.width;
	    }

	    return { left: left, top: top };
	};

	NodeContainer.prototype.parseBackgroundRepeat = function (index) {
	    return this.cssList("backgroundRepeat", index)[0];
	};

	NodeContainer.prototype.parseTextShadows = function () {
	    var textShadow = this.css("textShadow");
	    var results = [];

	    if (textShadow && textShadow !== 'none') {
	        var shadows = textShadow.match(this.TEXT_SHADOW_PROPERTY);
	        for (var i = 0; shadows && i < shadows.length; i++) {
	            var s = shadows[i].match(this.TEXT_SHADOW_VALUES);
	            results.push({
	                color: new Color(s[0]),
	                offsetX: s[1] ? parseFloat(s[1].replace('px', '')) : 0,
	                offsetY: s[2] ? parseFloat(s[2].replace('px', '')) : 0,
	                blur: s[3] ? s[3].replace('px', '') : 0
	            });
	        }
	    }
	    return results;
	};

	NodeContainer.prototype.parseTransform = function () {
	    if (!this.transformData) {
	        if (this.hasTransform()) {
	            var offset = this.parseBounds();
	            var origin = this.prefixedCss("transformOrigin").split(" ").map(removePx).map(asFloat);
	            origin[0] += offset.left;
	            origin[1] += offset.top;
	            this.transformData = {
	                origin: origin,
	                matrix: this.parseTransformMatrix()
	            };
	        } else {
	            this.transformData = {
	                origin: [0, 0],
	                matrix: [1, 0, 0, 1, 0, 0]
	            };
	        }
	    }
	    return this.transformData;
	};

	NodeContainer.prototype.parseTransformMatrix = function () {
	    if (!this.transformMatrix) {
	        var transform = this.prefixedCss("transform");
	        var matrix = transform ? parseMatrix(transform.match(this.MATRIX_PROPERTY)) : null;
	        this.transformMatrix = matrix ? matrix : [1, 0, 0, 1, 0, 0];
	    }
	    return this.transformMatrix;
	};

	NodeContainer.prototype.parseBounds = function () {
	    return this.bounds || (this.bounds = this.hasTransform() ? offsetBounds(this.node) : getBounds(this.node));
	};

	NodeContainer.prototype.hasTransform = function () {
	    return this.parseTransformMatrix().join(",") !== "1,0,0,1,0,0" || this.parent && this.parent.hasTransform();
	};

	NodeContainer.prototype.getValue = function () {
	    var value = this.node.value || "";
	    if (this.node.tagName === "SELECT") {
	        value = selectionValue(this.node);
	    } else if (this.node.type === "password") {
	        value = Array(value.length + 1).join('\u2022'); // jshint ignore:line
	    }
	    return value.length === 0 ? this.node.placeholder || "" : value;
	};

	NodeContainer.prototype.MATRIX_PROPERTY = /(matrix|matrix3d)\((.+)\)/;
	NodeContainer.prototype.TEXT_SHADOW_PROPERTY = /((rgba|rgb)\([^\)]+\)(\s-?\d+px){0,})/g;
	NodeContainer.prototype.TEXT_SHADOW_VALUES = /(-?\d+px)|(#.+)|(rgb\(.+\))|(rgba\(.+\))/g;
	NodeContainer.prototype.CLIP = /^rect\((\d+)px,? (\d+)px,? (\d+)px,? (\d+)px\)$/;

	function selectionValue(node) {
	    var option = node.options[node.selectedIndex || 0];
	    return option ? option.text || "" : "";
	}

	function parseMatrix(match) {
	    if (match && match[1] === "matrix") {
	        return match[2].split(",").map(function (s) {
	            return parseFloat(s.trim());
	        });
	    } else if (match && match[1] === "matrix3d") {
	        var matrix3d = match[2].split(",").map(function (s) {
	            return parseFloat(s.trim());
	        });
	        return [matrix3d[0], matrix3d[1], matrix3d[4], matrix3d[5], matrix3d[12], matrix3d[13]];
	    }
	}

	function isPercentage(value) {
	    return value.toString().indexOf("%") !== -1;
	}

	function removePx(str) {
	    return str.replace("px", "");
	}

	function asFloat(str) {
	    return parseFloat(str);
	}

	module.exports = NodeContainer;

/***/ }),
/* 25 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";

	var NodeContainer = __webpack_require__(24);

	function TextContainer(node, parent) {
	    NodeContainer.call(this, node, parent);
	}

	TextContainer.prototype = Object.create(NodeContainer.prototype);

	TextContainer.prototype.applyTextTransform = function () {
	    this.node.data = this.transform(this.parent.css("textTransform"));
	};

	TextContainer.prototype.transform = function (transform) {
	    var text = this.node.data;
	    switch (transform) {
	        case "lowercase":
	            return text.toLowerCase();
	        case "capitalize":
	            return text.replace(/(^|\s|:|-|\(|\))([a-z])/g, capitalize);
	        case "uppercase":
	            return text.toUpperCase();
	        default:
	            return text;
	    }
	};

	function capitalize(m, p1, p2) {
	    if (m.length > 0) {
	        return p1 + p2.toUpperCase();
	    }
	}

	module.exports = TextContainer;

/***/ }),
/* 26 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";

	var NodeContainer = __webpack_require__(24);

	function PseudoElementContainer(node, parent, type) {
	    NodeContainer.call(this, node, parent);
	    this.isPseudoElement = true;
	    this.before = type === ":before";
	}

	PseudoElementContainer.prototype.cloneTo = function (stack) {
	    PseudoElementContainer.prototype.cloneTo.call(this, stack);
	    stack.isPseudoElement = true;
	    stack.before = this.before;
	};

	PseudoElementContainer.prototype = Object.create(NodeContainer.prototype);

	PseudoElementContainer.prototype.appendToDOM = function () {
	    if (this.before) {
	        this.parent.node.insertBefore(this.node, this.parent.node.firstChild);
	    } else {
	        this.parent.node.appendChild(this.node);
	    }
	    this.parent.node.className += " " + this.getHideClass();
	};

	PseudoElementContainer.prototype.cleanDOM = function () {
	    this.node.parentNode.removeChild(this.node);
	    this.parent.node.className = this.parent.node.className.replace(this.getHideClass(), "");
	};

	PseudoElementContainer.prototype.getHideClass = function () {
	    return this["PSEUDO_HIDE_ELEMENT_CLASS_" + (this.before ? "BEFORE" : "AFTER")];
	};

	PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_BEFORE = "___html2canvas___pseudoelement_before";
	PseudoElementContainer.prototype.PSEUDO_HIDE_ELEMENT_CLASS_AFTER = "___html2canvas___pseudoelement_after";

	module.exports = PseudoElementContainer;

/***/ }),
/* 27 */
/***/ (function(module, exports, __webpack_require__) {

	"use strict";

	var Font = __webpack_require__(28);

	function FontMetrics() {
	    this.data = {};
	}

	FontMetrics.prototype.getMetrics = function (family, size) {
	    if (this.data[family + "-" + size] === undefined) {
	        this.data[family + "-" + size] = new Font(family, size);
	    }
	    return this.data[family + "-" + size];
	};

	module.exports = FontMetrics;

/***/ }),
/* 28 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var smallImage = __webpack_require__(12).smallImage;

	function Font(family, size) {
	    var container = document.createElement('div'),
	        img = document.createElement('img'),
	        span = document.createElement('span'),
	        sampleText = 'Hidden Text',
	        baseline,
	        middle;

	    container.style.visibility = "hidden";
	    container.style.fontFamily = family;
	    container.style.fontSize = size;
	    container.style.margin = 0;
	    container.style.padding = 0;

	    document.body.appendChild(container);

	    img.src = smallImage();
	    img.width = 1;
	    img.height = 1;

	    img.style.margin = 0;
	    img.style.padding = 0;
	    img.style.verticalAlign = "baseline";

	    span.style.fontFamily = family;
	    span.style.fontSize = size;
	    span.style.margin = 0;
	    span.style.padding = 0;

	    span.appendChild(document.createTextNode(sampleText));
	    container.appendChild(span);
	    container.appendChild(img);
	    baseline = img.offsetTop - span.offsetTop + 1;

	    container.removeChild(span);
	    container.appendChild(document.createTextNode(sampleText));

	    container.style.lineHeight = "normal";
	    img.style.verticalAlign = "super";

	    middle = img.offsetTop - container.offsetTop + 1;

	    document.body.removeChild(container);

	    this.baseline = baseline;
	    this.lineWidth = 1;
	    this.middle = middle;
	}

	module.exports = Font;

/***/ }),
/* 29 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var NodeContainer = __webpack_require__(24);

	function StackingContext(hasOwnStacking, opacity, element, parent) {
	    NodeContainer.call(this, element, parent);
	    this.ownStacking = hasOwnStacking;
	    this.contexts = [];
	    this.children = [];
	    this.opacity = (this.parent ? this.parent.stack.opacity : 1) * opacity;
	}

	StackingContext.prototype = Object.create(NodeContainer.prototype);

	StackingContext.prototype.getParentStack = function (context) {
	    var parentStack = this.parent ? this.parent.stack : null;
	    return parentStack ? parentStack.ownStacking ? parentStack : parentStack.getParentStack(context) : context.stack;
	};

	module.exports = StackingContext;

/***/ })
/******/ ]);
},{}],111:[function(require,module,exports){
/******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};

/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {

/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId])
/******/ 			return installedModules[moduleId].exports;

/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			exports: {},
/******/ 			id: moduleId,
/******/ 			loaded: false
/******/ 		};

/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);

/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}


/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";

/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';

	var _lodash = __webpack_require__(1);

	var _lodash2 = _interopRequireDefault(_lodash);

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

	if (typeof AFRAME === 'undefined') {
		throw 'mouse-cursor Component attempted to register before AFRAME was available.';
	}

	var IS_VR_AVAILABLE = AFRAME.utils.device.isMobile() || window.hasNonPolyfillWebVRSupport;

	/**
	 * Mouse Cursor Component for A-Frame.
	 */
	AFRAME.registerComponent('mouse-cursor', {
		schema: {},

		/**
	  * Called once when component is attached. Generally for initial setup.
	  * @protected
	  */
		init: function init() {
			this._raycaster = new THREE.Raycaster();
			this._mouse = new THREE.Vector2();
			this._isMobile = this.el.sceneEl.isMobile;
			this._isStereo = false;
			this._active = false;
			this._isDown = false;
			this._intersectedEl = null;
			this._attachEventListeners();
			this._canvasSize = false;
			/* bind functions */
			this.__getCanvasPos = this._getCanvasPos.bind(this);
			this.__getCanvasPos = this._getCanvasPos.bind(this);
			this.__onEnterVR = this._onEnterVR.bind(this);
			this.__onExitVR = this._onExitVR.bind(this);
			this.__onDown = this._onDown.bind(this);
			this.__onClick = this._onClick.bind(this);
			this.__onMouseMove = this._onMouseMove.bind(this);
			this.__onRelease = this._onRelease.bind(this);
			this.__onTouchMove = this._onTouchMove.bind(this);
			this.__onComponentChanged = this._onComponentChanged.bind(this);
		},


		/**
	  * Called when component is attached and when component data changes.
	  * Generally modifies the entity based on the data.
	  * @protected
	  */
		update: function update(oldData) {},


		/**
	  * Called when a component is removed (e.g., via removeAttribute).
	  * Generally undoes all modifications to the entity.
	  * @protected
	  */
		remove: function remove() {
			this._removeEventListeners();
			this._raycaster = null;
		},


		/**
	  * Called on each scene tick.
	  * @protected
	  */
		// tick (t) { },

		/**
	  * Called when entity pauses.
	  * Use to stop or remove any dynamic or background behavior such as events.
	  * @protected
	  */
		pause: function pause() {
			this._active = false;
		},


		/**
	  * Called when entity resumes.
	  * Use to continue or add any dynamic or background behavior such as events.
	  * @protected
	  */
		play: function play() {
			this._active = true;
		},


		/*==============================
	  =            events            =
	  ==============================*/

		/**
	  * @private
	  */
		_attachEventListeners: function _attachEventListeners() {
			var el = this.el;
			var sceneEl = el.sceneEl;
			var canvas = sceneEl.canvas;
			/* if canvas doesn't exist, listen for canvas to load. */

			if (!canvas) {
				el.sceneEl.addEventListener('render-target-loaded', this._attachEventListeners.bind(this));
				return;
			}

			window.addEventListener('resize', this.__getCanvasPos);
			document.addEventListener('scroll', this.__getCanvasPos);
			/* update _canvas in case scene is embedded */
			this._getCanvasPos();

			/* scene */
			sceneEl.addEventListener('enter-vr', this.__onEnterVR);
			sceneEl.addEventListener('exit-vr', this.__onExitVR);

			/* Mouse events */
			canvas.addEventListener('mousedown', this.__onDown);
			canvas.addEventListener('mousemove', this.__onMouseMove);
			canvas.addEventListener('mouseup', this.__onRelease);
			canvas.addEventListener('mouseout', this.__onRelease);

			/* Touch events */
			canvas.addEventListener('touchstart', this.__onDown);
			canvas.addEventListener('touchmove', this.__onTouchMove);
			canvas.addEventListener('touchend', this.__onRelease);

			/* Click event */
			canvas.addEventListener('click', this.__onClick);

			/* Element component change */
			el.addEventListener('componentchanged', this.__onComponentChanged);
		},


		/**
	  * @private
	  */
		_removeEventListeners: function _removeEventListeners() {
			var el = this.el;
			var sceneEl = el.sceneEl;
			var canvas = sceneEl.canvas;

			if (!canvas) {
				return;
			}

			window.removeEventListener('resize', this.__getCanvasPos);
			document.removeEventListener('scroll', this.__getCanvasPos);

			/* scene */
			sceneEl.removeEventListener('enter-vr', this.__onEnterVR);
			sceneEl.removeEventListener('exit-vr', this.__onExitVR);

			/* Mouse events */
			canvas.removeEventListener('mousedown', this.__onDown);
			canvas.removeEventListener('mousemove', this.__onMouseMove);
			canvas.removeEventListener('mouseup', this.__onRelease);
			canvas.removeEventListener('mouseout', this.__onRelease);

			/* Touch events */
			canvas.removeEventListener('touchstart', this.__onDown);
			canvas.removeEventListener('touchmove', this.__onTouchMove);
			canvas.removeEventListener('touchend', this.__onRelease);

			/* Click event */
			canvas.removeEventListener('click', this.__onClick);

			/* Element component change */
			el.removeEventListener('componentchanged', this.__onComponentChanged);
		},


		/**
	  * Check if the mouse cursor is active
	  * @private
	  */
		_isActive: function _isActive() {
			return !!(this._active || this._raycaster);
		},


		/**
	  * @private
	  */
		_onDown: function _onDown(evt) {
			if (!this._isActive()) {
				return;
			}

			this._isDown = true;

			this._updateMouse(evt);
			this._updateIntersectObject();

			if (!this._isMobile) {
				this._setInitMousePosition(evt);
			}
			if (this._intersectedEl) {
				this._emit('mousedown');
			}
		},


		/**
	  * @private
	  */
		_onClick: function _onClick(evt) {
			if (!this._isActive()) {
				return;
			}

			this._updateMouse(evt);
			this._updateIntersectObject();

			if (this._intersectedEl) {
				this._emit('click');
			}
		},


		/**
	  * @private
	  */
		_onRelease: function _onRelease() {
			if (!this._isActive()) {
				return;
			}

			/* check if mouse position has updated */
			if (this._defMousePosition) {
				var defX = Math.abs(this._initMousePosition.x - this._defMousePosition.x);
				var defY = Math.abs(this._initMousePosition.y - this._defMousePosition.y);
				var def = Math.max(defX, defY);
				if (def > 0.04) {
					/* mouse has moved too much to recognize as click. */
					this._isDown = false;
				}
			}

			if (this._isDown && this._intersectedEl) {
				this._emit('mouseup');
			}
			this._isDown = false;
			this._resetMousePosition();
		},


		/**
	  * @private
	  */
		_onMouseMove: function _onMouseMove(evt) {
			if (!this._isActive()) {
				return;
			}

			this._updateMouse(evt);
			this._updateIntersectObject();

			if (this._isDown) {
				this._setMousePosition(evt);
			}
		},


		/**
	  * @private
	  */
		_onTouchMove: function _onTouchMove(evt) {
			if (!this._isActive()) {
				return;
			}

			this._isDown = false;
		},


		/**
	  * @private
	  */
		_onEnterVR: function _onEnterVR() {
			if (IS_VR_AVAILABLE) {
				this._isStereo = true;
			}
			this._getCanvasPos();
		},


		/**
	  * @private
	  */
		_onExitVR: function _onExitVR() {
			this._isStereo = false;
			this._getCanvasPos();
		},


		/**
	  * @private
	  */
		_onComponentChanged: function _onComponentChanged(evt) {
			if (evt.detail.name === 'position') {
				this._updateIntersectObject();
			}
		},


		/*=============================
	  =            mouse            =
	  =============================*/

		/**
	  * Get mouse position from size of canvas element
	  * @private
	  */
		_getPosition: function _getPosition(evt) {
			var _canvasSize = this._canvasSize,
			    w = _canvasSize.width,
			    h = _canvasSize.height,
			    offsetW = _canvasSize.left,
			    offsetH = _canvasSize.top;


			var cx = void 0,
			    cy = void 0;
			if (this._isMobile) {
				var touches = evt.touches;

				if (!touches || touches.length !== 1) {
					return;
				}
				var touch = touches[0];
				cx = touch.clientX;
				cy = touch.clientY;
			} else {
				cx = evt.clientX;
				cy = evt.clientY;
			}

			/* account for the offset if scene is embedded */
			cx = cx - offsetW;
			cy = cy - offsetH;

			if (this._isStereo) {
				cx = cx % (w / 2) * 2;
			}

			var x = cx / w * 2 - 1;
			var y = -(cy / h) * 2 + 1;

			return { x: x, y: y };
		},


		/**
	  * Update mouse
	  * @private
	  */
		_updateMouse: function _updateMouse(evt) {
			var pos = this._getPosition(evt);
			if (!pos) {
				return;
			}

			this._mouse.x = pos.x;
			this._mouse.y = pos.y;
		},


		/**
	  * Update mouse position
	  * @private
	  */
		_setMousePosition: function _setMousePosition(evt) {
			this._defMousePosition = this._getPosition(evt);
		},


		/**
	  * Update initial mouse position
	  * @private
	  */
		_setInitMousePosition: function _setInitMousePosition(evt) {
			this._initMousePosition = this._getPosition(evt);
		},
		_resetMousePosition: function _resetMousePosition() {
			this._initMousePosition = this._defMousePosition = null;
		},


		/*======================================
	  =            scene children            =
	  ======================================*/

		/**
	  * @private
	  */
		_getCanvasPos: function _getCanvasPos() {
			this._canvasSize = this.el.sceneEl.canvas.getBoundingClientRect(); // update _canvas in case scene is embedded
		},


		/**
	  * Get non group object3D
	  * @private
	  */
		_getChildren: function _getChildren(object3D) {
			var _this = this;

			return object3D.children.map(function (obj) {
				return obj.type === 'Group' ? _this._getChildren(obj) : obj;
			});
		},


		/**
	  * Get all non group object3D
	  * @private
	  */
		_getAllChildren: function _getAllChildren() {
			var children = this._getChildren(this.el.sceneEl.object3D);
			return (0, _lodash2.default)(children);
		},


		/*====================================
	  =            intersection            =
	  ====================================*/

		/**
	  * Update intersect element with cursor
	  * @private
	  */
		_updateIntersectObject: function _updateIntersectObject() {
			var _raycaster = this._raycaster,
			    el = this.el,
			    _mouse = this._mouse;
			var scene = el.sceneEl.object3D;

			var camera = this.el.getObject3D('camera');
			this._getAllChildren();
			/* find intersections */
			// _raycaster.setFromCamera(_mouse, camera) /* this somehow gets error so did the below */
			_raycaster.ray.origin.setFromMatrixPosition(camera.matrixWorld);
			_raycaster.ray.direction.set(_mouse.x, _mouse.y, 0.5).unproject(camera).sub(_raycaster.ray.origin).normalize();

			/* get objects intersected between mouse and camera */
			var children = this._getAllChildren();
			var intersects = _raycaster.intersectObjects(children);

			if (intersects.length > 0) {
				/* get the closest three obj */
				var obj = void 0;
				intersects.every(function (item) {
					if (item.object.parent.visible === true) {
						obj = item.object;
						return false;
					} else {
						return true;
					}
				});
				if (!obj) {
					this._clearIntersectObject();
					return;
				}
				/* get the entity */
				var _el = obj.parent.el;
				/* only updates if the object is not the activated object */

				if (this._intersectedEl === _el) {
					return;
				}
				this._clearIntersectObject();
				/* apply new object as intersected */
				this._setIntersectObject(_el);
			} else {
				this._clearIntersectObject();
			}
		},


		/**
	  * Set intersect element
	  * @private
	  * @param {AEntity} el `a-entity` element
	  */
		_setIntersectObject: function _setIntersectObject(el) {
			this._intersectedEl = el;
			if (this._isMobile) {
				return;
			}
			el.addState('hovered');
			el.emit('mouseenter');
			this.el.addState('hovering');
		},


		/**
	  * Clear intersect element
	  * @private
	  */
		_clearIntersectObject: function _clearIntersectObject() {
			var el = this._intersectedEl;

			if (el && !this._isMobile) {
				el.removeState('hovered');
				el.emit('mouseleave');
				this.el.removeState('hovering');
			}

			this._intersectedEl = null;
		},


		/*===============================
	  =            emitter            =
	  ===============================*/

		/**
	  * @private
	  */
		_emit: function _emit(evt) {
			var _intersectedEl = this._intersectedEl;

			this.el.emit(evt, { target: _intersectedEl });
			if (_intersectedEl) {
				_intersectedEl.emit(evt);
			}
		}
	});

/***/ }),
/* 1 */
/***/ (function(module, exports) {

	/* WEBPACK VAR INJECTION */(function(global) {/**
	 * lodash (Custom Build) <https://lodash.com/>
	 * Build: `lodash modularize exports="npm" -o ./`
	 * Copyright jQuery Foundation and other contributors <https://jquery.org/>
	 * Released under MIT license <https://lodash.com/license>
	 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
	 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
	 */

	/** Used as references for various `Number` constants. */
	var INFINITY = 1 / 0,
	    MAX_SAFE_INTEGER = 9007199254740991;

	/** `Object#toString` result references. */
	var argsTag = '[object Arguments]',
	    funcTag = '[object Function]',
	    genTag = '[object GeneratorFunction]';

	/** Detect free variable `global` from Node.js. */
	var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

	/** Detect free variable `self`. */
	var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

	/** Used as a reference to the global object. */
	var root = freeGlobal || freeSelf || Function('return this')();

	/**
	 * Appends the elements of `values` to `array`.
	 *
	 * @private
	 * @param {Array} array The array to modify.
	 * @param {Array} values The values to append.
	 * @returns {Array} Returns `array`.
	 */
	function arrayPush(array, values) {
	  var index = -1,
	      length = values.length,
	      offset = array.length;

	  while (++index < length) {
	    array[offset + index] = values[index];
	  }
	  return array;
	}

	/** Used for built-in method references. */
	var objectProto = Object.prototype;

	/** Used to check objects for own properties. */
	var hasOwnProperty = objectProto.hasOwnProperty;

	/**
	 * Used to resolve the
	 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
	 * of values.
	 */
	var objectToString = objectProto.toString;

	/** Built-in value references. */
	var Symbol = root.Symbol,
	    propertyIsEnumerable = objectProto.propertyIsEnumerable,
	    spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined;

	/**
	 * The base implementation of `_.flatten` with support for restricting flattening.
	 *
	 * @private
	 * @param {Array} array The array to flatten.
	 * @param {number} depth The maximum recursion depth.
	 * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
	 * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
	 * @param {Array} [result=[]] The initial result value.
	 * @returns {Array} Returns the new flattened array.
	 */
	function baseFlatten(array, depth, predicate, isStrict, result) {
	  var index = -1,
	      length = array.length;

	  predicate || (predicate = isFlattenable);
	  result || (result = []);

	  while (++index < length) {
	    var value = array[index];
	    if (depth > 0 && predicate(value)) {
	      if (depth > 1) {
	        // Recursively flatten arrays (susceptible to call stack limits).
	        baseFlatten(value, depth - 1, predicate, isStrict, result);
	      } else {
	        arrayPush(result, value);
	      }
	    } else if (!isStrict) {
	      result[result.length] = value;
	    }
	  }
	  return result;
	}

	/**
	 * Checks if `value` is a flattenable `arguments` object or array.
	 *
	 * @private
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
	 */
	function isFlattenable(value) {
	  return isArray(value) || isArguments(value) ||
	    !!(spreadableSymbol && value && value[spreadableSymbol]);
	}

	/**
	 * Recursively flattens `array`.
	 *
	 * @static
	 * @memberOf _
	 * @since 3.0.0
	 * @category Array
	 * @param {Array} array The array to flatten.
	 * @returns {Array} Returns the new flattened array.
	 * @example
	 *
	 * _.flattenDeep([1, [2, [3, [4]], 5]]);
	 * // => [1, 2, 3, 4, 5]
	 */
	function flattenDeep(array) {
	  var length = array ? array.length : 0;
	  return length ? baseFlatten(array, INFINITY) : [];
	}

	/**
	 * Checks if `value` is likely an `arguments` object.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
	 *  else `false`.
	 * @example
	 *
	 * _.isArguments(function() { return arguments; }());
	 * // => true
	 *
	 * _.isArguments([1, 2, 3]);
	 * // => false
	 */
	function isArguments(value) {
	  // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
	  return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
	    (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
	}

	/**
	 * Checks if `value` is classified as an `Array` object.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an array, else `false`.
	 * @example
	 *
	 * _.isArray([1, 2, 3]);
	 * // => true
	 *
	 * _.isArray(document.body.children);
	 * // => false
	 *
	 * _.isArray('abc');
	 * // => false
	 *
	 * _.isArray(_.noop);
	 * // => false
	 */
	var isArray = Array.isArray;

	/**
	 * Checks if `value` is array-like. A value is considered array-like if it's
	 * not a function and has a `value.length` that's an integer greater than or
	 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
	 *
	 * @static
	 * @memberOf _
	 * @since 4.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
	 * @example
	 *
	 * _.isArrayLike([1, 2, 3]);
	 * // => true
	 *
	 * _.isArrayLike(document.body.children);
	 * // => true
	 *
	 * _.isArrayLike('abc');
	 * // => true
	 *
	 * _.isArrayLike(_.noop);
	 * // => false
	 */
	function isArrayLike(value) {
	  return value != null && isLength(value.length) && !isFunction(value);
	}

	/**
	 * This method is like `_.isArrayLike` except that it also checks if `value`
	 * is an object.
	 *
	 * @static
	 * @memberOf _
	 * @since 4.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an array-like object,
	 *  else `false`.
	 * @example
	 *
	 * _.isArrayLikeObject([1, 2, 3]);
	 * // => true
	 *
	 * _.isArrayLikeObject(document.body.children);
	 * // => true
	 *
	 * _.isArrayLikeObject('abc');
	 * // => false
	 *
	 * _.isArrayLikeObject(_.noop);
	 * // => false
	 */
	function isArrayLikeObject(value) {
	  return isObjectLike(value) && isArrayLike(value);
	}

	/**
	 * Checks if `value` is classified as a `Function` object.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
	 * @example
	 *
	 * _.isFunction(_);
	 * // => true
	 *
	 * _.isFunction(/abc/);
	 * // => false
	 */
	function isFunction(value) {
	  // The use of `Object#toString` avoids issues with the `typeof` operator
	  // in Safari 8-9 which returns 'object' for typed array and other constructors.
	  var tag = isObject(value) ? objectToString.call(value) : '';
	  return tag == funcTag || tag == genTag;
	}

	/**
	 * Checks if `value` is a valid array-like length.
	 *
	 * **Note:** This method is loosely based on
	 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
	 *
	 * @static
	 * @memberOf _
	 * @since 4.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
	 * @example
	 *
	 * _.isLength(3);
	 * // => true
	 *
	 * _.isLength(Number.MIN_VALUE);
	 * // => false
	 *
	 * _.isLength(Infinity);
	 * // => false
	 *
	 * _.isLength('3');
	 * // => false
	 */
	function isLength(value) {
	  return typeof value == 'number' &&
	    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
	}

	/**
	 * Checks if `value` is the
	 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
	 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
	 * @example
	 *
	 * _.isObject({});
	 * // => true
	 *
	 * _.isObject([1, 2, 3]);
	 * // => true
	 *
	 * _.isObject(_.noop);
	 * // => true
	 *
	 * _.isObject(null);
	 * // => false
	 */
	function isObject(value) {
	  var type = typeof value;
	  return !!value && (type == 'object' || type == 'function');
	}

	/**
	 * Checks if `value` is object-like. A value is object-like if it's not `null`
	 * and has a `typeof` result of "object".
	 *
	 * @static
	 * @memberOf _
	 * @since 4.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
	 * @example
	 *
	 * _.isObjectLike({});
	 * // => true
	 *
	 * _.isObjectLike([1, 2, 3]);
	 * // => true
	 *
	 * _.isObjectLike(_.noop);
	 * // => false
	 *
	 * _.isObjectLike(null);
	 * // => false
	 */
	function isObjectLike(value) {
	  return !!value && typeof value == 'object';
	}

	module.exports = flattenDeep;

	/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))

/***/ })
/******/ ]);
},{}],112:[function(require,module,exports){
!function(t){function e(a){if(i[a])return i[a].exports;var s=i[a]={exports:{},id:a,loaded:!1};return t[a].call(s.exports,s,s.exports,e),s.loaded=!0,s.exports}var i={};return e.m=t,e.c=i,e.p="",e(0)}([function(t,e){if("undefined"==typeof AFRAME)throw new Error("Component attempted to register before AFRAME was available.");var i="Double-click outside player to hide or show it.",a="Look+click on play or bar. Space bar and arrows also work.";AFRAME.registerComponent("video-controls",{schema:{src:{type:"string"},size:{type:"number","default":1},distance:{type:"number","default":2},backgroundColor:{"default":"black"},barColor:{"default":"red"},textColor:{"default":"yellow"},infoTextBottom:{"default":i},infoTextTop:{"default":a},infoTextFont:{"default":"35px Helvetica Neue"},statusTextFont:{"default":"30px Helvetica Neue"},timeTextFont:{"default":"70px Helvetica Neue"}},position_time_from_steps:function(){var t=this.current_step/this.bar_steps;this.video_el.readyState>0&&(this.video_el.currentTime=t*this.video_el.duration)},position_control_from_camera:function(){var t=this,e=t.el.sceneEl.camera;if(e){var i=e.el.getAttribute("rotation"),a=i.y;t.y_position=e.position.y+1.6,t.x_position=-t.data.distance*Math.sin(a*Math.PI/180),t.z_position=-t.data.distance*Math.cos(a*Math.PI/180),t.el.setAttribute("position",[t.x_position,t.y_position,t.z_position].join(" ")),this.el.object3D.lookAt(new THREE.Vector3(e.position.x,e.position.y+1.6,e.position.z))}},init:function(){var t=this;this.bar_steps=10,this.current_step=0,this.el.setAttribute("visible",!0),this.video_selector=this.data.src,this.video_el=document.querySelector(this.video_selector),t.play_image_src=document.getElementById("video-play-image")?"#video-play-image":"https://res.cloudinary.com/dxbh0pppv/image/upload/c_scale,h_512,q_10/v1471016296/play_wvmogo.png",t.pause_image_src=document.getElementById("video-pause-image")?"#video-pause-image":"https://res.cloudinary.com/dxbh0pppv/image/upload/c_scale,h_512,q_25/v1471016296/pause_ndega5.png",this.play_image=document.createElement("a-image"),this.video_el.paused?this.play_image.setAttribute("src",t.play_image_src):this.play_image.setAttribute("src",t.pause_image_src),this.video_el.addEventListener("ended",function(){t.play_image.setAttribute("src",t.play_image_src)}),this.video_el.addEventListener("pause",function(){t.play_image.setAttribute("src",t.play_image_src)}),this.video_el.addEventListener("playing",function(){t.play_image.setAttribute("src",t.pause_image_src)}),this.bar_canvas=document.createElement("canvas"),this.bar_canvas.setAttribute("id","video_player_canvas"),this.bar_canvas.width=1024,this.bar_canvas.height=256,this.bar_canvas.style.display="none",this.context=this.bar_canvas.getContext("2d"),this.texture=new THREE.Texture(this.bar_canvas),this.play_image.addEventListener("click",function(e){t.video_el.paused?(this.setAttribute("src",t.pause_image_src),t.video_el.play()):(this.setAttribute("src",t.play_image_src),t.video_el.pause()),e.stopPropagation(),e.preventDefault()}),window.addEventListener("keyup",function(e){switch(e.keyCode){case 32:t.play_image.dispatchEvent(new Event("click"));break;case 37:t.current_step=0,t.position_time_from_steps();break;case 39:t.current_step=t.bar_steps,t.position_time_from_steps();break;case 38:t.current_step=t.current_step<t.bar_steps?t.current_step+1:t.current_step,t.position_time_from_steps();break;case 40:t.current_step=t.current_step>0?t.current_step-1:t.current_step,t.position_time_from_steps()}},!1),this.bar=document.createElement("a-plane"),this.bar.setAttribute("color","#000"),this.bar.addEventListener("click",function(e){var i=document.querySelector("a-cursor").components.raycaster.raycaster.intersectObject(this.object3D,!0)[0].point,a=this.object3D.worldToLocal(i).x,s=a/t.data.size+.5;t.current_step=Math.round(s*t.bar_steps),t.video_el.readyState>0&&(t.video_el.currentTime=s*t.video_el.duration),e.stopPropagation(),e.preventDefault()}),this.el.appendChild(this.bar_canvas),this.el.appendChild(this.play_image),this.el.appendChild(this.bar),this.el.sceneEl.addEventListener("loaded",function(){t.position_control_from_camera(),this.addEventListener("dblclick",function(){var e=document.querySelector("a-cursor").components.raycaster.raycaster;0==e.intersectObject(t.el.object3D,!0).length&&(t.el.getAttribute("visible")?t.el.setAttribute("visible",!1):(t.el.setAttribute("visible",!0),t.position_control_from_camera()))})})},update:function(t){this.position_control_from_camera(),this.bar.setAttribute("height",this.data.size/4),this.bar.setAttribute("width",this.data.size),this.bar.setAttribute("position","0.0 0.0 0"),this.play_image.setAttribute("height",this.data.size/4),this.play_image.setAttribute("width",this.data.size/4),this.play_image.setAttribute("position",-this.data.size/2*1.4+" 0 0")},remove:function(){},tick:function(t){if("undefined"==typeof this.last_time||t-this.last_time>250){if(this.video_el.readyState>0){var e=Math.floor(this.video_el.currentTime/60),i=Math.floor(this.video_el.currentTime%60);e=e<10?"0"+e:e,i=i<10?"0"+i:i;var a=Math.floor(this.video_el.duration/60),s=Math.floor(this.video_el.duration%60);a=a<10?"0"+a:a,s=s<10?"0"+s:s;var r=e+":"+i+" / "+a+":"+s,o=this.bar_canvas.width/this.video_el.duration;if(this.video_el.buffered.length>0){this.current_step=Math.round(this.video_el.currentTime/this.video_el.duration*this.bar_steps);var n=this.context;if(n.fillStyle=this.data.backgroundColor,n.fillRect(0,0,this.bar_canvas.width,this.bar_canvas.height),n.font=this.data.timeTextFont,n.fillStyle="white",n.textAlign="center",n.fillText(r,this.bar_canvas.width/2,.65*this.bar_canvas.height),this.video_el.seeking)n.font=this.data.statusTextFont,n.fillStyle=this.data.textColor,n.textAlign="end",n.fillText("Seeking",.95*this.bar_canvas.width,.6*this.bar_canvas.height);else{var l=this.video_el.buffered.end(this.video_el.buffered.length-1)/this.video_el.duration*100;n.font=this.data.statusTextFont,n.fillStyle=this.data.textColor,n.textAlign="end",n.fillText(l.toFixed(0)+"% loaded",.95*this.bar_canvas.width,.6*this.bar_canvas.height)}n.fillStyle=this.data.textColor,n.font=this.data.infoTextFont,n.textAlign="center",n.fillText(this.data.infoTextTop,this.bar_canvas.width/2,.8*this.bar_canvas.height),n.fillText(this.data.infoTextBottom,this.bar_canvas.width/2,.95*this.bar_canvas.height);for(var c=0;c<this.video_el.buffered.length;c++){var d=this.video_el.buffered.start(c)*o,h=this.video_el.buffered.end(c)*o,_=h-d;n.fillStyle="grey",n.fillRect(d,0,_,this.bar_canvas.height/3)}n.fillStyle=this.data.barColor,n.fillRect(0,0,this.video_el.currentTime/this.video_el.duration*this.bar_canvas.width,this.bar_canvas.height/3)}this.bar.object3D.children.length>0&&(null===this.bar.object3D.children[0].material.map&&(this.bar.object3D.children[0].material=new THREE.MeshBasicMaterial,this.bar.object3D.children[0].material.map=this.texture),this.texture.needsUpdate=!0)}this.last_time=t}},pause:function(){},play:function(){}})}]);
},{}],113:[function(require,module,exports){
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

require('@firebase/polyfill');
module.exports = require('@firebase/app').default;

},{"@firebase/app":1,"@firebase/polyfill":88}],114:[function(require,module,exports){
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

require('@firebase/auth');

},{"@firebase/auth":3}],115:[function(require,module,exports){
/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

module.exports = require('@firebase/database');

},{"@firebase/database":4}],116:[function(require,module,exports){
/*
* @Author: lushijie
* @Date:   2015-01-08 16:09:09
* @Last Modified by:   lushijie
* @Last Modified time: 2016-10-13 18:28:02
* @Email email:lushijie1218@126.com
*/
(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        define([], factory);
    } else if (typeof exports === 'object') {
        module.exports = factory();
    } else {
        root.getURLParam = factory();
    }
}(this, function () {
    return function getURLParam(url,name){
        var aParams;
        if(url.indexOf("?")!=-1){
            var searchString=url.split("?")[1];
            if(searchString.indexOf(name+"=")!=-1){
                aParams=searchString.split('&');
                for (i=0; i < aParams.length ; i++){
                    if(aParams[i].split('=')[0]==name){
                        return aParams[i].split('=')[1];
                    }
                }
                return null;
            }
        }
        return null;
    }
}));

},{}],117:[function(require,module,exports){
/*!
 * jQuery JavaScript Library v3.3.1
 * https://jquery.com/
 *
 * Includes Sizzle.js
 * https://sizzlejs.com/
 *
 * Copyright JS Foundation and other contributors
 * Released under the MIT license
 * https://jquery.org/license
 *
 * Date: 2018-01-20T17:24Z
 */
( function( global, factory ) {

	"use strict";

	if ( typeof module === "object" && typeof module.exports === "object" ) {

		// For CommonJS and CommonJS-like environments where a proper `window`
		// is present, execute the factory and get jQuery.
		// For environments that do not have a `window` with a `document`
		// (such as Node.js), expose a factory as module.exports.
		// This accentuates the need for the creation of a real `window`.
		// e.g. var jQuery = require("jquery")(window);
		// See ticket #14549 for more info.
		module.exports = global.document ?
			factory( global, true ) :
			function( w ) {
				if ( !w.document ) {
					throw new Error( "jQuery requires a window with a document" );
				}
				return factory( w );
			};
	} else {
		factory( global );
	}

// Pass this if window is not defined yet
} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {

// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
// enough that all such attempts are guarded in a try block.
"use strict";

var arr = [];

var document = window.document;

var getProto = Object.getPrototypeOf;

var slice = arr.slice;

var concat = arr.concat;

var push = arr.push;

var indexOf = arr.indexOf;

var class2type = {};

var toString = class2type.toString;

var hasOwn = class2type.hasOwnProperty;

var fnToString = hasOwn.toString;

var ObjectFunctionString = fnToString.call( Object );

var support = {};

var isFunction = function isFunction( obj ) {

      // Support: Chrome <=57, Firefox <=52
      // In some browsers, typeof returns "function" for HTML <object> elements
      // (i.e., `typeof document.createElement( "object" ) === "function"`).
      // We don't want to classify *any* DOM node as a function.
      return typeof obj === "function" && typeof obj.nodeType !== "number";
  };


var isWindow = function isWindow( obj ) {
		return obj != null && obj === obj.window;
	};




	var preservedScriptAttributes = {
		type: true,
		src: true,
		noModule: true
	};

	function DOMEval( code, doc, node ) {
		doc = doc || document;

		var i,
			script = doc.createElement( "script" );

		script.text = code;
		if ( node ) {
			for ( i in preservedScriptAttributes ) {
				if ( node[ i ] ) {
					script[ i ] = node[ i ];
				}
			}
		}
		doc.head.appendChild( script ).parentNode.removeChild( script );
	}


function toType( obj ) {
	if ( obj == null ) {
		return obj + "";
	}

	// Support: Android <=2.3 only (functionish RegExp)
	return typeof obj === "object" || typeof obj === "function" ?
		class2type[ toString.call( obj ) ] || "object" :
		typeof obj;
}
/* global Symbol */
// Defining this global in .eslintrc.json would create a danger of using the global
// unguarded in another place, it seems safer to define global only for this module



var
	version = "3.3.1",

	// Define a local copy of jQuery
	jQuery = function( selector, context ) {

		// The jQuery object is actually just the init constructor 'enhanced'
		// Need init if jQuery is called (just allow error to be thrown if not included)
		return new jQuery.fn.init( selector, context );
	},

	// Support: Android <=4.0 only
	// Make sure we trim BOM and NBSP
	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;

jQuery.fn = jQuery.prototype = {

	// The current version of jQuery being used
	jquery: version,

	constructor: jQuery,

	// The default length of a jQuery object is 0
	length: 0,

	toArray: function() {
		return slice.call( this );
	},

	// Get the Nth element in the matched element set OR
	// Get the whole matched element set as a clean array
	get: function( num ) {

		// Return all the elements in a clean array
		if ( num == null ) {
			return slice.call( this );
		}

		// Return just the one element from the set
		return num < 0 ? this[ num + this.length ] : this[ num ];
	},

	// Take an array of elements and push it onto the stack
	// (returning the new matched element set)
	pushStack: function( elems ) {

		// Build a new jQuery matched element set
		var ret = jQuery.merge( this.constructor(), elems );

		// Add the old object onto the stack (as a reference)
		ret.prevObject = this;

		// Return the newly-formed element set
		return ret;
	},

	// Execute a callback for every element in the matched set.
	each: function( callback ) {
		return jQuery.each( this, callback );
	},

	map: function( callback ) {
		return this.pushStack( jQuery.map( this, function( elem, i ) {
			return callback.call( elem, i, elem );
		} ) );
	},

	slice: function() {
		return this.pushStack( slice.apply( this, arguments ) );
	},

	first: function() {
		return this.eq( 0 );
	},

	last: function() {
		return this.eq( -1 );
	},

	eq: function( i ) {
		var len = this.length,
			j = +i + ( i < 0 ? len : 0 );
		return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
	},

	end: function() {
		return this.prevObject || this.constructor();
	},

	// For internal use only.
	// Behaves like an Array's method, not like a jQuery method.
	push: push,
	sort: arr.sort,
	splice: arr.splice
};

jQuery.extend = jQuery.fn.extend = function() {
	var options, name, src, copy, copyIsArray, clone,
		target = arguments[ 0 ] || {},
		i = 1,
		length = arguments.length,
		deep = false;

	// Handle a deep copy situation
	if ( typeof target === "boolean" ) {
		deep = target;

		// Skip the boolean and the target
		target = arguments[ i ] || {};
		i++;
	}

	// Handle case when target is a string or something (possible in deep copy)
	if ( typeof target !== "object" && !isFunction( target ) ) {
		target = {};
	}

	// Extend jQuery itself if only one argument is passed
	if ( i === length ) {
		target = this;
		i--;
	}

	for ( ; i < length; i++ ) {

		// Only deal with non-null/undefined values
		if ( ( options = arguments[ i ] ) != null ) {

			// Extend the base object
			for ( name in options ) {
				src = target[ name ];
				copy = options[ name ];

				// Prevent never-ending loop
				if ( target === copy ) {
					continue;
				}

				// Recurse if we're merging plain objects or arrays
				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
					( copyIsArray = Array.isArray( copy ) ) ) ) {

					if ( copyIsArray ) {
						copyIsArray = false;
						clone = src && Array.isArray( src ) ? src : [];

					} else {
						clone = src && jQuery.isPlainObject( src ) ? src : {};
					}

					// Never move original objects, clone them
					target[ name ] = jQuery.extend( deep, clone, copy );

				// Don't bring in undefined values
				} else if ( copy !== undefined ) {
					target[ name ] = copy;
				}
			}
		}
	}

	// Return the modified object
	return target;
};

jQuery.extend( {

	// Unique for each copy of jQuery on the page
	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),

	// Assume jQuery is ready without the ready module
	isReady: true,

	error: function( msg ) {
		throw new Error( msg );
	},

	noop: function() {},

	isPlainObject: function( obj ) {
		var proto, Ctor;

		// Detect obvious negatives
		// Use toString instead of jQuery.type to catch host objects
		if ( !obj || toString.call( obj ) !== "[object Object]" ) {
			return false;
		}

		proto = getProto( obj );

		// Objects with no prototype (e.g., `Object.create( null )`) are plain
		if ( !proto ) {
			return true;
		}

		// Objects with prototype are plain iff they were constructed by a global Object function
		Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
		return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
	},

	isEmptyObject: function( obj ) {

		/* eslint-disable no-unused-vars */
		// See https://github.com/eslint/eslint/issues/6125
		var name;

		for ( name in obj ) {
			return false;
		}
		return true;
	},

	// Evaluates a script in a global context
	globalEval: function( code ) {
		DOMEval( code );
	},

	each: function( obj, callback ) {
		var length, i = 0;

		if ( isArrayLike( obj ) ) {
			length = obj.length;
			for ( ; i < length; i++ ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		} else {
			for ( i in obj ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		}

		return obj;
	},

	// Support: Android <=4.0 only
	trim: function( text ) {
		return text == null ?
			"" :
			( text + "" ).replace( rtrim, "" );
	},

	// results is for internal usage only
	makeArray: function( arr, results ) {
		var ret = results || [];

		if ( arr != null ) {
			if ( isArrayLike( Object( arr ) ) ) {
				jQuery.merge( ret,
					typeof arr === "string" ?
					[ arr ] : arr
				);
			} else {
				push.call( ret, arr );
			}
		}

		return ret;
	},

	inArray: function( elem, arr, i ) {
		return arr == null ? -1 : indexOf.call( arr, elem, i );
	},

	// Support: Android <=4.0 only, PhantomJS 1 only
	// push.apply(_, arraylike) throws on ancient WebKit
	merge: function( first, second ) {
		var len = +second.length,
			j = 0,
			i = first.length;

		for ( ; j < len; j++ ) {
			first[ i++ ] = second[ j ];
		}

		first.length = i;

		return first;
	},

	grep: function( elems, callback, invert ) {
		var callbackInverse,
			matches = [],
			i = 0,
			length = elems.length,
			callbackExpect = !invert;

		// Go through the array, only saving the items
		// that pass the validator function
		for ( ; i < length; i++ ) {
			callbackInverse = !callback( elems[ i ], i );
			if ( callbackInverse !== callbackExpect ) {
				matches.push( elems[ i ] );
			}
		}

		return matches;
	},

	// arg is for internal usage only
	map: function( elems, callback, arg ) {
		var length, value,
			i = 0,
			ret = [];

		// Go through the array, translating each of the items to their new values
		if ( isArrayLike( elems ) ) {
			length = elems.length;
			for ( ; i < length; i++ ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}

		// Go through every key on the object,
		} else {
			for ( i in elems ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}
		}

		// Flatten any nested arrays
		return concat.apply( [], ret );
	},

	// A global GUID counter for objects
	guid: 1,

	// jQuery.support is not used in Core but other projects attach their
	// properties to it so it needs to exist.
	support: support
} );

if ( typeof Symbol === "function" ) {
	jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
}

// Populate the class2type map
jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
function( i, name ) {
	class2type[ "[object " + name + "]" ] = name.toLowerCase();
} );

function isArrayLike( obj ) {

	// Support: real iOS 8.2 only (not reproducible in simulator)
	// `in` check used to prevent JIT error (gh-2145)
	// hasOwn isn't used here due to false negatives
	// regarding Nodelist length in IE
	var length = !!obj && "length" in obj && obj.length,
		type = toType( obj );

	if ( isFunction( obj ) || isWindow( obj ) ) {
		return false;
	}

	return type === "array" || length === 0 ||
		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
}
var Sizzle =
/*!
 * Sizzle CSS Selector Engine v2.3.3
 * https://sizzlejs.com/
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2016-08-08
 */
(function( window ) {

var i,
	support,
	Expr,
	getText,
	isXML,
	tokenize,
	compile,
	select,
	outermostContext,
	sortInput,
	hasDuplicate,

	// Local document vars
	setDocument,
	document,
	docElem,
	documentIsHTML,
	rbuggyQSA,
	rbuggyMatches,
	matches,
	contains,

	// Instance-specific data
	expando = "sizzle" + 1 * new Date(),
	preferredDoc = window.document,
	dirruns = 0,
	done = 0,
	classCache = createCache(),
	tokenCache = createCache(),
	compilerCache = createCache(),
	sortOrder = function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
		}
		return 0;
	},

	// Instance methods
	hasOwn = ({}).hasOwnProperty,
	arr = [],
	pop = arr.pop,
	push_native = arr.push,
	push = arr.push,
	slice = arr.slice,
	// Use a stripped-down indexOf as it's faster than native
	// https://jsperf.com/thor-indexof-vs-for/5
	indexOf = function( list, elem ) {
		var i = 0,
			len = list.length;
		for ( ; i < len; i++ ) {
			if ( list[i] === elem ) {
				return i;
			}
		}
		return -1;
	},

	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",

	// Regular expressions

	// http://www.w3.org/TR/css3-selectors/#whitespace
	whitespace = "[\\x20\\t\\r\\n\\f]",

	// http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
	identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",

	// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
	attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
		// Operator (capture 2)
		"*([*^$|!~]?=)" + whitespace +
		// "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
		"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
		"*\\]",

	pseudos = ":(" + identifier + ")(?:\\((" +
		// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
		// 1. quoted (capture 3; capture 4 or capture 5)
		"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
		// 2. simple (capture 6)
		"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
		// 3. anything else (capture 2)
		".*" +
		")\\)|)",

	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
	rwhitespace = new RegExp( whitespace + "+", "g" ),
	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),

	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),

	rpseudo = new RegExp( pseudos ),
	ridentifier = new RegExp( "^" + identifier + "$" ),

	matchExpr = {
		"ID": new RegExp( "^#(" + identifier + ")" ),
		"CLASS": new RegExp( "^\\.(" + identifier + ")" ),
		"TAG": new RegExp( "^(" + identifier + "|[*])" ),
		"ATTR": new RegExp( "^" + attributes ),
		"PSEUDO": new RegExp( "^" + pseudos ),
		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
		// For use in libraries implementing .is()
		// We use this for POS matching in `select`
		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
	},

	rinputs = /^(?:input|select|textarea|button)$/i,
	rheader = /^h\d$/i,

	rnative = /^[^{]+\{\s*\[native \w/,

	// Easily-parseable/retrievable ID or TAG or CLASS selectors
	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,

	rsibling = /[+~]/,

	// CSS escapes
	// http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
	funescape = function( _, escaped, escapedWhitespace ) {
		var high = "0x" + escaped - 0x10000;
		// NaN means non-codepoint
		// Support: Firefox<24
		// Workaround erroneous numeric interpretation of +"0x"
		return high !== high || escapedWhitespace ?
			escaped :
			high < 0 ?
				// BMP codepoint
				String.fromCharCode( high + 0x10000 ) :
				// Supplemental Plane codepoint (surrogate pair)
				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
	},

	// CSS string/identifier serialization
	// https://drafts.csswg.org/cssom/#common-serializing-idioms
	rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
	fcssescape = function( ch, asCodePoint ) {
		if ( asCodePoint ) {

			// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
			if ( ch === "\0" ) {
				return "\uFFFD";
			}

			// Control characters and (dependent upon position) numbers get escaped as code points
			return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
		}

		// Other potentially-special ASCII characters get backslash-escaped
		return "\\" + ch;
	},

	// Used for iframes
	// See setDocument()
	// Removing the function wrapper causes a "Permission Denied"
	// error in IE
	unloadHandler = function() {
		setDocument();
	},

	disabledAncestor = addCombinator(
		function( elem ) {
			return elem.disabled === true && ("form" in elem || "label" in elem);
		},
		{ dir: "parentNode", next: "legend" }
	);

// Optimize for push.apply( _, NodeList )
try {
	push.apply(
		(arr = slice.call( preferredDoc.childNodes )),
		preferredDoc.childNodes
	);
	// Support: Android<4.0
	// Detect silently failing push.apply
	arr[ preferredDoc.childNodes.length ].nodeType;
} catch ( e ) {
	push = { apply: arr.length ?

		// Leverage slice if possible
		function( target, els ) {
			push_native.apply( target, slice.call(els) );
		} :

		// Support: IE<9
		// Otherwise append directly
		function( target, els ) {
			var j = target.length,
				i = 0;
			// Can't trust NodeList.length
			while ( (target[j++] = els[i++]) ) {}
			target.length = j - 1;
		}
	};
}

function Sizzle( selector, context, results, seed ) {
	var m, i, elem, nid, match, groups, newSelector,
		newContext = context && context.ownerDocument,

		// nodeType defaults to 9, since context defaults to document
		nodeType = context ? context.nodeType : 9;

	results = results || [];

	// Return early from calls with invalid selector or context
	if ( typeof selector !== "string" || !selector ||
		nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {

		return results;
	}

	// Try to shortcut find operations (as opposed to filters) in HTML documents
	if ( !seed ) {

		if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
			setDocument( context );
		}
		context = context || document;

		if ( documentIsHTML ) {

			// If the selector is sufficiently simple, try using a "get*By*" DOM method
			// (excepting DocumentFragment context, where the methods don't exist)
			if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) {

				// ID selector
				if ( (m = match[1]) ) {

					// Document context
					if ( nodeType === 9 ) {
						if ( (elem = context.getElementById( m )) ) {

							// Support: IE, Opera, Webkit
							// TODO: identify versions
							// getElementById can match elements by name instead of ID
							if ( elem.id === m ) {
								results.push( elem );
								return results;
							}
						} else {
							return results;
						}

					// Element context
					} else {

						// Support: IE, Opera, Webkit
						// TODO: identify versions
						// getElementById can match elements by name instead of ID
						if ( newContext && (elem = newContext.getElementById( m )) &&
							contains( context, elem ) &&
							elem.id === m ) {

							results.push( elem );
							return results;
						}
					}

				// Type selector
				} else if ( match[2] ) {
					push.apply( results, context.getElementsByTagName( selector ) );
					return results;

				// Class selector
				} else if ( (m = match[3]) && support.getElementsByClassName &&
					context.getElementsByClassName ) {

					push.apply( results, context.getElementsByClassName( m ) );
					return results;
				}
			}

			// Take advantage of querySelectorAll
			if ( support.qsa &&
				!compilerCache[ selector + " " ] &&
				(!rbuggyQSA || !rbuggyQSA.test( selector )) ) {

				if ( nodeType !== 1 ) {
					newContext = context;
					newSelector = selector;

				// qSA looks outside Element context, which is not what we want
				// Thanks to Andrew Dupont for this workaround technique
				// Support: IE <=8
				// Exclude object elements
				} else if ( context.nodeName.toLowerCase() !== "object" ) {

					// Capture the context ID, setting it first if necessary
					if ( (nid = context.getAttribute( "id" )) ) {
						nid = nid.replace( rcssescape, fcssescape );
					} else {
						context.setAttribute( "id", (nid = expando) );
					}

					// Prefix every selector in the list
					groups = tokenize( selector );
					i = groups.length;
					while ( i-- ) {
						groups[i] = "#" + nid + " " + toSelector( groups[i] );
					}
					newSelector = groups.join( "," );

					// Expand context for sibling selectors
					newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
						context;
				}

				if ( newSelector ) {
					try {
						push.apply( results,
							newContext.querySelectorAll( newSelector )
						);
						return results;
					} catch ( qsaError ) {
					} finally {
						if ( nid === expando ) {
							context.removeAttribute( "id" );
						}
					}
				}
			}
		}
	}

	// All others
	return select( selector.replace( rtrim, "$1" ), context, results, seed );
}

/**
 * Create key-value caches of limited size
 * @returns {function(string, object)} Returns the Object data after storing it on itself with
 *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
 *	deleting the oldest entry
 */
function createCache() {
	var keys = [];

	function cache( key, value ) {
		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
		if ( keys.push( key + " " ) > Expr.cacheLength ) {
			// Only keep the most recent entries
			delete cache[ keys.shift() ];
		}
		return (cache[ key + " " ] = value);
	}
	return cache;
}

/**
 * Mark a function for special use by Sizzle
 * @param {Function} fn The function to mark
 */
function markFunction( fn ) {
	fn[ expando ] = true;
	return fn;
}

/**
 * Support testing using an element
 * @param {Function} fn Passed the created element and returns a boolean result
 */
function assert( fn ) {
	var el = document.createElement("fieldset");

	try {
		return !!fn( el );
	} catch (e) {
		return false;
	} finally {
		// Remove from its parent by default
		if ( el.parentNode ) {
			el.parentNode.removeChild( el );
		}
		// release memory in IE
		el = null;
	}
}

/**
 * Adds the same handler for all of the specified attrs
 * @param {String} attrs Pipe-separated list of attributes
 * @param {Function} handler The method that will be applied
 */
function addHandle( attrs, handler ) {
	var arr = attrs.split("|"),
		i = arr.length;

	while ( i-- ) {
		Expr.attrHandle[ arr[i] ] = handler;
	}
}

/**
 * Checks document order of two siblings
 * @param {Element} a
 * @param {Element} b
 * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
 */
function siblingCheck( a, b ) {
	var cur = b && a,
		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
			a.sourceIndex - b.sourceIndex;

	// Use IE sourceIndex if available on both nodes
	if ( diff ) {
		return diff;
	}

	// Check if b follows a
	if ( cur ) {
		while ( (cur = cur.nextSibling) ) {
			if ( cur === b ) {
				return -1;
			}
		}
	}

	return a ? 1 : -1;
}

/**
 * Returns a function to use in pseudos for input types
 * @param {String} type
 */
function createInputPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return name === "input" && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for buttons
 * @param {String} type
 */
function createButtonPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return (name === "input" || name === "button") && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for :enabled/:disabled
 * @param {Boolean} disabled true for :disabled; false for :enabled
 */
function createDisabledPseudo( disabled ) {

	// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
	return function( elem ) {

		// Only certain elements can match :enabled or :disabled
		// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
		// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
		if ( "form" in elem ) {

			// Check for inherited disabledness on relevant non-disabled elements:
			// * listed form-associated elements in a disabled fieldset
			//   https://html.spec.whatwg.org/multipage/forms.html#category-listed
			//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
			// * option elements in a disabled optgroup
			//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
			// All such elements have a "form" property.
			if ( elem.parentNode && elem.disabled === false ) {

				// Option elements defer to a parent optgroup if present
				if ( "label" in elem ) {
					if ( "label" in elem.parentNode ) {
						return elem.parentNode.disabled === disabled;
					} else {
						return elem.disabled === disabled;
					}
				}

				// Support: IE 6 - 11
				// Use the isDisabled shortcut property to check for disabled fieldset ancestors
				return elem.isDisabled === disabled ||

					// Where there is no isDisabled, check manually
					/* jshint -W018 */
					elem.isDisabled !== !disabled &&
						disabledAncestor( elem ) === disabled;
			}

			return elem.disabled === disabled;

		// Try to winnow out elements that can't be disabled before trusting the disabled property.
		// Some victims get caught in our net (label, legend, menu, track), but it shouldn't
		// even exist on them, let alone have a boolean value.
		} else if ( "label" in elem ) {
			return elem.disabled === disabled;
		}

		// Remaining elements are neither :enabled nor :disabled
		return false;
	};
}

/**
 * Returns a function to use in pseudos for positionals
 * @param {Function} fn
 */
function createPositionalPseudo( fn ) {
	return markFunction(function( argument ) {
		argument = +argument;
		return markFunction(function( seed, matches ) {
			var j,
				matchIndexes = fn( [], seed.length, argument ),
				i = matchIndexes.length;

			// Match elements found at the specified indexes
			while ( i-- ) {
				if ( seed[ (j = matchIndexes[i]) ] ) {
					seed[j] = !(matches[j] = seed[j]);
				}
			}
		});
	});
}

/**
 * Checks a node for validity as a Sizzle context
 * @param {Element|Object=} context
 * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
 */
function testContext( context ) {
	return context && typeof context.getElementsByTagName !== "undefined" && context;
}

// Expose support vars for convenience
support = Sizzle.support = {};

/**
 * Detects XML nodes
 * @param {Element|Object} elem An element or a document
 * @returns {Boolean} True iff elem is a non-HTML XML node
 */
isXML = Sizzle.isXML = function( elem ) {
	// documentElement is verified for cases where it doesn't yet exist
	// (such as loading iframes in IE - #4833)
	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

/**
 * Sets document-related variables once based on the current document
 * @param {Element|Object} [doc] An element or document object to use to set the document
 * @returns {Object} Returns the current document
 */
setDocument = Sizzle.setDocument = function( node ) {
	var hasCompare, subWindow,
		doc = node ? node.ownerDocument || node : preferredDoc;

	// Return early if doc is invalid or already selected
	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
		return document;
	}

	// Update global variables
	document = doc;
	docElem = document.documentElement;
	documentIsHTML = !isXML( document );

	// Support: IE 9-11, Edge
	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
	if ( preferredDoc !== document &&
		(subWindow = document.defaultView) && subWindow.top !== subWindow ) {

		// Support: IE 11, Edge
		if ( subWindow.addEventListener ) {
			subWindow.addEventListener( "unload", unloadHandler, false );

		// Support: IE 9 - 10 only
		} else if ( subWindow.attachEvent ) {
			subWindow.attachEvent( "onunload", unloadHandler );
		}
	}

	/* Attributes
	---------------------------------------------------------------------- */

	// Support: IE<8
	// Verify that getAttribute really returns attributes and not properties
	// (excepting IE8 booleans)
	support.attributes = assert(function( el ) {
		el.className = "i";
		return !el.getAttribute("className");
	});

	/* getElement(s)By*
	---------------------------------------------------------------------- */

	// Check if getElementsByTagName("*") returns only elements
	support.getElementsByTagName = assert(function( el ) {
		el.appendChild( document.createComment("") );
		return !el.getElementsByTagName("*").length;
	});

	// Support: IE<9
	support.getElementsByClassName = rnative.test( document.getElementsByClassName );

	// Support: IE<10
	// Check if getElementById returns elements by name
	// The broken getElementById methods don't pick up programmatically-set names,
	// so use a roundabout getElementsByName test
	support.getById = assert(function( el ) {
		docElem.appendChild( el ).id = expando;
		return !document.getElementsByName || !document.getElementsByName( expando ).length;
	});

	// ID filter and find
	if ( support.getById ) {
		Expr.filter["ID"] = function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				return elem.getAttribute("id") === attrId;
			};
		};
		Expr.find["ID"] = function( id, context ) {
			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
				var elem = context.getElementById( id );
				return elem ? [ elem ] : [];
			}
		};
	} else {
		Expr.filter["ID"] =  function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				var node = typeof elem.getAttributeNode !== "undefined" &&
					elem.getAttributeNode("id");
				return node && node.value === attrId;
			};
		};

		// Support: IE 6 - 7 only
		// getElementById is not reliable as a find shortcut
		Expr.find["ID"] = function( id, context ) {
			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
				var node, i, elems,
					elem = context.getElementById( id );

				if ( elem ) {

					// Verify the id attribute
					node = elem.getAttributeNode("id");
					if ( node && node.value === id ) {
						return [ elem ];
					}

					// Fall back on getElementsByName
					elems = context.getElementsByName( id );
					i = 0;
					while ( (elem = elems[i++]) ) {
						node = elem.getAttributeNode("id");
						if ( node && node.value === id ) {
							return [ elem ];
						}
					}
				}

				return [];
			}
		};
	}

	// Tag
	Expr.find["TAG"] = support.getElementsByTagName ?
		function( tag, context ) {
			if ( typeof context.getElementsByTagName !== "undefined" ) {
				return context.getElementsByTagName( tag );

			// DocumentFragment nodes don't have gEBTN
			} else if ( support.qsa ) {
				return context.querySelectorAll( tag );
			}
		} :

		function( tag, context ) {
			var elem,
				tmp = [],
				i = 0,
				// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
				results = context.getElementsByTagName( tag );

			// Filter out possible comments
			if ( tag === "*" ) {
				while ( (elem = results[i++]) ) {
					if ( elem.nodeType === 1 ) {
						tmp.push( elem );
					}
				}

				return tmp;
			}
			return results;
		};

	// Class
	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
		if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
			return context.getElementsByClassName( className );
		}
	};

	/* QSA/matchesSelector
	---------------------------------------------------------------------- */

	// QSA and matchesSelector support

	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
	rbuggyMatches = [];

	// qSa(:focus) reports false when true (Chrome 21)
	// We allow this because of a bug in IE8/9 that throws an error
	// whenever `document.activeElement` is accessed on an iframe
	// So, we allow :focus to pass through QSA all the time to avoid the IE error
	// See https://bugs.jquery.com/ticket/13378
	rbuggyQSA = [];

	if ( (support.qsa = rnative.test( document.querySelectorAll )) ) {
		// Build QSA regex
		// Regex strategy adopted from Diego Perini
		assert(function( el ) {
			// Select is set to empty string on purpose
			// This is to test IE's treatment of not explicitly
			// setting a boolean content attribute,
			// since its presence should be enough
			// https://bugs.jquery.com/ticket/12359
			docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" +
				"<select id='" + expando + "-\r\\' msallowcapture=''>" +
				"<option selected=''></option></select>";

			// Support: IE8, Opera 11-12.16
			// Nothing should be selected when empty strings follow ^= or $= or *=
			// The test attribute must be unknown in Opera but "safe" for WinRT
			// https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
			if ( el.querySelectorAll("[msallowcapture^='']").length ) {
				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
			}

			// Support: IE8
			// Boolean attributes and "value" are not treated correctly
			if ( !el.querySelectorAll("[selected]").length ) {
				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
			}

			// Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
			if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
				rbuggyQSA.push("~=");
			}

			// Webkit/Opera - :checked should return selected option elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			// IE8 throws error here and will not see later tests
			if ( !el.querySelectorAll(":checked").length ) {
				rbuggyQSA.push(":checked");
			}

			// Support: Safari 8+, iOS 8+
			// https://bugs.webkit.org/show_bug.cgi?id=136851
			// In-page `selector#id sibling-combinator selector` fails
			if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) {
				rbuggyQSA.push(".#.+[+~]");
			}
		});

		assert(function( el ) {
			el.innerHTML = "<a href='' disabled='disabled'></a>" +
				"<select disabled='disabled'><option/></select>";

			// Support: Windows 8 Native Apps
			// The type and name attributes are restricted during .innerHTML assignment
			var input = document.createElement("input");
			input.setAttribute( "type", "hidden" );
			el.appendChild( input ).setAttribute( "name", "D" );

			// Support: IE8
			// Enforce case-sensitivity of name attribute
			if ( el.querySelectorAll("[name=d]").length ) {
				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
			}

			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
			// IE8 throws error here and will not see later tests
			if ( el.querySelectorAll(":enabled").length !== 2 ) {
				rbuggyQSA.push( ":enabled", ":disabled" );
			}

			// Support: IE9-11+
			// IE's :disabled selector does not pick up the children of disabled fieldsets
			docElem.appendChild( el ).disabled = true;
			if ( el.querySelectorAll(":disabled").length !== 2 ) {
				rbuggyQSA.push( ":enabled", ":disabled" );
			}

			// Opera 10-11 does not throw on post-comma invalid pseudos
			el.querySelectorAll("*,:x");
			rbuggyQSA.push(",.*:");
		});
	}

	if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
		docElem.webkitMatchesSelector ||
		docElem.mozMatchesSelector ||
		docElem.oMatchesSelector ||
		docElem.msMatchesSelector) )) ) {

		assert(function( el ) {
			// Check to see if it's possible to do matchesSelector
			// on a disconnected node (IE 9)
			support.disconnectedMatch = matches.call( el, "*" );

			// This should fail with an exception
			// Gecko does not error, returns false instead
			matches.call( el, "[s!='']:x" );
			rbuggyMatches.push( "!=", pseudos );
		});
	}

	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );

	/* Contains
	---------------------------------------------------------------------- */
	hasCompare = rnative.test( docElem.compareDocumentPosition );

	// Element contains another
	// Purposefully self-exclusive
	// As in, an element does not contain itself
	contains = hasCompare || rnative.test( docElem.contains ) ?
		function( a, b ) {
			var adown = a.nodeType === 9 ? a.documentElement : a,
				bup = b && b.parentNode;
			return a === bup || !!( bup && bup.nodeType === 1 && (
				adown.contains ?
					adown.contains( bup ) :
					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
			));
		} :
		function( a, b ) {
			if ( b ) {
				while ( (b = b.parentNode) ) {
					if ( b === a ) {
						return true;
					}
				}
			}
			return false;
		};

	/* Sorting
	---------------------------------------------------------------------- */

	// Document order sorting
	sortOrder = hasCompare ?
	function( a, b ) {

		// Flag for duplicate removal
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		// Sort on method existence if only one input has compareDocumentPosition
		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
		if ( compare ) {
			return compare;
		}

		// Calculate position if both inputs belong to the same document
		compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
			a.compareDocumentPosition( b ) :

			// Otherwise we know they are disconnected
			1;

		// Disconnected nodes
		if ( compare & 1 ||
			(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {

			// Choose the first element that is related to our preferred document
			if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
				return -1;
			}
			if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
				return 1;
			}

			// Maintain original order
			return sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;
		}

		return compare & 4 ? -1 : 1;
	} :
	function( a, b ) {
		// Exit early if the nodes are identical
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		var cur,
			i = 0,
			aup = a.parentNode,
			bup = b.parentNode,
			ap = [ a ],
			bp = [ b ];

		// Parentless nodes are either documents or disconnected
		if ( !aup || !bup ) {
			return a === document ? -1 :
				b === document ? 1 :
				aup ? -1 :
				bup ? 1 :
				sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;

		// If the nodes are siblings, we can do a quick check
		} else if ( aup === bup ) {
			return siblingCheck( a, b );
		}

		// Otherwise we need full lists of their ancestors for comparison
		cur = a;
		while ( (cur = cur.parentNode) ) {
			ap.unshift( cur );
		}
		cur = b;
		while ( (cur = cur.parentNode) ) {
			bp.unshift( cur );
		}

		// Walk down the tree looking for a discrepancy
		while ( ap[i] === bp[i] ) {
			i++;
		}

		return i ?
			// Do a sibling check if the nodes have a common ancestor
			siblingCheck( ap[i], bp[i] ) :

			// Otherwise nodes in our document sort first
			ap[i] === preferredDoc ? -1 :
			bp[i] === preferredDoc ? 1 :
			0;
	};

	return document;
};

Sizzle.matches = function( expr, elements ) {
	return Sizzle( expr, null, null, elements );
};

Sizzle.matchesSelector = function( elem, expr ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	// Make sure that attribute selectors are quoted
	expr = expr.replace( rattributeQuotes, "='$1']" );

	if ( support.matchesSelector && documentIsHTML &&
		!compilerCache[ expr + " " ] &&
		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {

		try {
			var ret = matches.call( elem, expr );

			// IE 9's matchesSelector returns false on disconnected nodes
			if ( ret || support.disconnectedMatch ||
					// As well, disconnected nodes are said to be in a document
					// fragment in IE 9
					elem.document && elem.document.nodeType !== 11 ) {
				return ret;
			}
		} catch (e) {}
	}

	return Sizzle( expr, document, null, [ elem ] ).length > 0;
};

Sizzle.contains = function( context, elem ) {
	// Set document vars if needed
	if ( ( context.ownerDocument || context ) !== document ) {
		setDocument( context );
	}
	return contains( context, elem );
};

Sizzle.attr = function( elem, name ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	var fn = Expr.attrHandle[ name.toLowerCase() ],
		// Don't get fooled by Object.prototype properties (jQuery #13807)
		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
			fn( elem, name, !documentIsHTML ) :
			undefined;

	return val !== undefined ?
		val :
		support.attributes || !documentIsHTML ?
			elem.getAttribute( name ) :
			(val = elem.getAttributeNode(name)) && val.specified ?
				val.value :
				null;
};

Sizzle.escape = function( sel ) {
	return (sel + "").replace( rcssescape, fcssescape );
};

Sizzle.error = function( msg ) {
	throw new Error( "Syntax error, unrecognized expression: " + msg );
};

/**
 * Document sorting and removing duplicates
 * @param {ArrayLike} results
 */
Sizzle.uniqueSort = function( results ) {
	var elem,
		duplicates = [],
		j = 0,
		i = 0;

	// Unless we *know* we can detect duplicates, assume their presence
	hasDuplicate = !support.detectDuplicates;
	sortInput = !support.sortStable && results.slice( 0 );
	results.sort( sortOrder );

	if ( hasDuplicate ) {
		while ( (elem = results[i++]) ) {
			if ( elem === results[ i ] ) {
				j = duplicates.push( i );
			}
		}
		while ( j-- ) {
			results.splice( duplicates[ j ], 1 );
		}
	}

	// Clear input after sorting to release objects
	// See https://github.com/jquery/sizzle/pull/225
	sortInput = null;

	return results;
};

/**
 * Utility function for retrieving the text value of an array of DOM nodes
 * @param {Array|Element} elem
 */
getText = Sizzle.getText = function( elem ) {
	var node,
		ret = "",
		i = 0,
		nodeType = elem.nodeType;

	if ( !nodeType ) {
		// If no nodeType, this is expected to be an array
		while ( (node = elem[i++]) ) {
			// Do not traverse comment nodes
			ret += getText( node );
		}
	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
		// Use textContent for elements
		// innerText usage removed for consistency of new lines (jQuery #11153)
		if ( typeof elem.textContent === "string" ) {
			return elem.textContent;
		} else {
			// Traverse its children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				ret += getText( elem );
			}
		}
	} else if ( nodeType === 3 || nodeType === 4 ) {
		return elem.nodeValue;
	}
	// Do not include comment or processing instruction nodes

	return ret;
};

Expr = Sizzle.selectors = {

	// Can be adjusted by the user
	cacheLength: 50,

	createPseudo: markFunction,

	match: matchExpr,

	attrHandle: {},

	find: {},

	relative: {
		">": { dir: "parentNode", first: true },
		" ": { dir: "parentNode" },
		"+": { dir: "previousSibling", first: true },
		"~": { dir: "previousSibling" }
	},

	preFilter: {
		"ATTR": function( match ) {
			match[1] = match[1].replace( runescape, funescape );

			// Move the given value to match[3] whether quoted or unquoted
			match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );

			if ( match[2] === "~=" ) {
				match[3] = " " + match[3] + " ";
			}

			return match.slice( 0, 4 );
		},

		"CHILD": function( match ) {
			/* matches from matchExpr["CHILD"]
				1 type (only|nth|...)
				2 what (child|of-type)
				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
				4 xn-component of xn+y argument ([+-]?\d*n|)
				5 sign of xn-component
				6 x of xn-component
				7 sign of y-component
				8 y of y-component
			*/
			match[1] = match[1].toLowerCase();

			if ( match[1].slice( 0, 3 ) === "nth" ) {
				// nth-* requires argument
				if ( !match[3] ) {
					Sizzle.error( match[0] );
				}

				// numeric x and y parameters for Expr.filter.CHILD
				// remember that false/true cast respectively to 0/1
				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );

			// other types prohibit arguments
			} else if ( match[3] ) {
				Sizzle.error( match[0] );
			}

			return match;
		},

		"PSEUDO": function( match ) {
			var excess,
				unquoted = !match[6] && match[2];

			if ( matchExpr["CHILD"].test( match[0] ) ) {
				return null;
			}

			// Accept quoted arguments as-is
			if ( match[3] ) {
				match[2] = match[4] || match[5] || "";

			// Strip excess characters from unquoted arguments
			} else if ( unquoted && rpseudo.test( unquoted ) &&
				// Get excess from tokenize (recursively)
				(excess = tokenize( unquoted, true )) &&
				// advance to the next closing parenthesis
				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

				// excess is a negative index
				match[0] = match[0].slice( 0, excess );
				match[2] = unquoted.slice( 0, excess );
			}

			// Return only captures needed by the pseudo filter method (type and argument)
			return match.slice( 0, 3 );
		}
	},

	filter: {

		"TAG": function( nodeNameSelector ) {
			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
			return nodeNameSelector === "*" ?
				function() { return true; } :
				function( elem ) {
					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
				};
		},

		"CLASS": function( className ) {
			var pattern = classCache[ className + " " ];

			return pattern ||
				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
				classCache( className, function( elem ) {
					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" );
				});
		},

		"ATTR": function( name, operator, check ) {
			return function( elem ) {
				var result = Sizzle.attr( elem, name );

				if ( result == null ) {
					return operator === "!=";
				}
				if ( !operator ) {
					return true;
				}

				result += "";

				return operator === "=" ? result === check :
					operator === "!=" ? result !== check :
					operator === "^=" ? check && result.indexOf( check ) === 0 :
					operator === "*=" ? check && result.indexOf( check ) > -1 :
					operator === "$=" ? check && result.slice( -check.length ) === check :
					operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
					false;
			};
		},

		"CHILD": function( type, what, argument, first, last ) {
			var simple = type.slice( 0, 3 ) !== "nth",
				forward = type.slice( -4 ) !== "last",
				ofType = what === "of-type";

			return first === 1 && last === 0 ?

				// Shortcut for :nth-*(n)
				function( elem ) {
					return !!elem.parentNode;
				} :

				function( elem, context, xml ) {
					var cache, uniqueCache, outerCache, node, nodeIndex, start,
						dir = simple !== forward ? "nextSibling" : "previousSibling",
						parent = elem.parentNode,
						name = ofType && elem.nodeName.toLowerCase(),
						useCache = !xml && !ofType,
						diff = false;

					if ( parent ) {

						// :(first|last|only)-(child|of-type)
						if ( simple ) {
							while ( dir ) {
								node = elem;
								while ( (node = node[ dir ]) ) {
									if ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) {

										return false;
									}
								}
								// Reverse direction for :only-* (if we haven't yet done so)
								start = dir = type === "only" && !start && "nextSibling";
							}
							return true;
						}

						start = [ forward ? parent.firstChild : parent.lastChild ];

						// non-xml :nth-child(...) stores cache data on `parent`
						if ( forward && useCache ) {

							// Seek `elem` from a previously-cached index

							// ...in a gzip-friendly way
							node = parent;
							outerCache = node[ expando ] || (node[ expando ] = {});

							// Support: IE <9 only
							// Defend against cloned attroperties (jQuery gh-1709)
							uniqueCache = outerCache[ node.uniqueID ] ||
								(outerCache[ node.uniqueID ] = {});

							cache = uniqueCache[ type ] || [];
							nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
							diff = nodeIndex && cache[ 2 ];
							node = nodeIndex && parent.childNodes[ nodeIndex ];

							while ( (node = ++nodeIndex && node && node[ dir ] ||

								// Fallback to seeking `elem` from the start
								(diff = nodeIndex = 0) || start.pop()) ) {

								// When found, cache indexes on `parent` and break
								if ( node.nodeType === 1 && ++diff && node === elem ) {
									uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
									break;
								}
							}

						} else {
							// Use previously-cached element index if available
							if ( useCache ) {
								// ...in a gzip-friendly way
								node = elem;
								outerCache = node[ expando ] || (node[ expando ] = {});

								// Support: IE <9 only
								// Defend against cloned attroperties (jQuery gh-1709)
								uniqueCache = outerCache[ node.uniqueID ] ||
									(outerCache[ node.uniqueID ] = {});

								cache = uniqueCache[ type ] || [];
								nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
								diff = nodeIndex;
							}

							// xml :nth-child(...)
							// or :nth-last-child(...) or :nth(-last)?-of-type(...)
							if ( diff === false ) {
								// Use the same loop as above to seek `elem` from the start
								while ( (node = ++nodeIndex && node && node[ dir ] ||
									(diff = nodeIndex = 0) || start.pop()) ) {

									if ( ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) &&
										++diff ) {

										// Cache the index of each encountered element
										if ( useCache ) {
											outerCache = node[ expando ] || (node[ expando ] = {});

											// Support: IE <9 only
											// Defend against cloned attroperties (jQuery gh-1709)
											uniqueCache = outerCache[ node.uniqueID ] ||
												(outerCache[ node.uniqueID ] = {});

											uniqueCache[ type ] = [ dirruns, diff ];
										}

										if ( node === elem ) {
											break;
										}
									}
								}
							}
						}

						// Incorporate the offset, then check against cycle size
						diff -= last;
						return diff === first || ( diff % first === 0 && diff / first >= 0 );
					}
				};
		},

		"PSEUDO": function( pseudo, argument ) {
			// pseudo-class names are case-insensitive
			// http://www.w3.org/TR/selectors/#pseudo-classes
			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
			// Remember that setFilters inherits from pseudos
			var args,
				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
					Sizzle.error( "unsupported pseudo: " + pseudo );

			// The user may use createPseudo to indicate that
			// arguments are needed to create the filter function
			// just as Sizzle does
			if ( fn[ expando ] ) {
				return fn( argument );
			}

			// But maintain support for old signatures
			if ( fn.length > 1 ) {
				args = [ pseudo, pseudo, "", argument ];
				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
					markFunction(function( seed, matches ) {
						var idx,
							matched = fn( seed, argument ),
							i = matched.length;
						while ( i-- ) {
							idx = indexOf( seed, matched[i] );
							seed[ idx ] = !( matches[ idx ] = matched[i] );
						}
					}) :
					function( elem ) {
						return fn( elem, 0, args );
					};
			}

			return fn;
		}
	},

	pseudos: {
		// Potentially complex pseudos
		"not": markFunction(function( selector ) {
			// Trim the selector passed to compile
			// to avoid treating leading and trailing
			// spaces as combinators
			var input = [],
				results = [],
				matcher = compile( selector.replace( rtrim, "$1" ) );

			return matcher[ expando ] ?
				markFunction(function( seed, matches, context, xml ) {
					var elem,
						unmatched = matcher( seed, null, xml, [] ),
						i = seed.length;

					// Match elements unmatched by `matcher`
					while ( i-- ) {
						if ( (elem = unmatched[i]) ) {
							seed[i] = !(matches[i] = elem);
						}
					}
				}) :
				function( elem, context, xml ) {
					input[0] = elem;
					matcher( input, null, xml, results );
					// Don't keep the element (issue #299)
					input[0] = null;
					return !results.pop();
				};
		}),

		"has": markFunction(function( selector ) {
			return function( elem ) {
				return Sizzle( selector, elem ).length > 0;
			};
		}),

		"contains": markFunction(function( text ) {
			text = text.replace( runescape, funescape );
			return function( elem ) {
				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
			};
		}),

		// "Whether an element is represented by a :lang() selector
		// is based solely on the element's language value
		// being equal to the identifier C,
		// or beginning with the identifier C immediately followed by "-".
		// The matching of C against the element's language value is performed case-insensitively.
		// The identifier C does not have to be a valid language name."
		// http://www.w3.org/TR/selectors/#lang-pseudo
		"lang": markFunction( function( lang ) {
			// lang value must be a valid identifier
			if ( !ridentifier.test(lang || "") ) {
				Sizzle.error( "unsupported lang: " + lang );
			}
			lang = lang.replace( runescape, funescape ).toLowerCase();
			return function( elem ) {
				var elemLang;
				do {
					if ( (elemLang = documentIsHTML ?
						elem.lang :
						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {

						elemLang = elemLang.toLowerCase();
						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
					}
				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
				return false;
			};
		}),

		// Miscellaneous
		"target": function( elem ) {
			var hash = window.location && window.location.hash;
			return hash && hash.slice( 1 ) === elem.id;
		},

		"root": function( elem ) {
			return elem === docElem;
		},

		"focus": function( elem ) {
			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
		},

		// Boolean properties
		"enabled": createDisabledPseudo( false ),
		"disabled": createDisabledPseudo( true ),

		"checked": function( elem ) {
			// In CSS3, :checked should return both checked and selected elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			var nodeName = elem.nodeName.toLowerCase();
			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
		},

		"selected": function( elem ) {
			// Accessing this property makes selected-by-default
			// options in Safari work properly
			if ( elem.parentNode ) {
				elem.parentNode.selectedIndex;
			}

			return elem.selected === true;
		},

		// Contents
		"empty": function( elem ) {
			// http://www.w3.org/TR/selectors/#empty-pseudo
			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
			//   but not by others (comment: 8; processing instruction: 7; etc.)
			// nodeType < 6 works because attributes (2) do not appear as children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				if ( elem.nodeType < 6 ) {
					return false;
				}
			}
			return true;
		},

		"parent": function( elem ) {
			return !Expr.pseudos["empty"]( elem );
		},

		// Element/input types
		"header": function( elem ) {
			return rheader.test( elem.nodeName );
		},

		"input": function( elem ) {
			return rinputs.test( elem.nodeName );
		},

		"button": function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return name === "input" && elem.type === "button" || name === "button";
		},

		"text": function( elem ) {
			var attr;
			return elem.nodeName.toLowerCase() === "input" &&
				elem.type === "text" &&

				// Support: IE<8
				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
		},

		// Position-in-collection
		"first": createPositionalPseudo(function() {
			return [ 0 ];
		}),

		"last": createPositionalPseudo(function( matchIndexes, length ) {
			return [ length - 1 ];
		}),

		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
			return [ argument < 0 ? argument + length : argument ];
		}),

		"even": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 0;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"odd": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 1;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; --i >= 0; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; ++i < length; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		})
	}
};

Expr.pseudos["nth"] = Expr.pseudos["eq"];

// Add button/input type pseudos
for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
	Expr.pseudos[ i ] = createInputPseudo( i );
}
for ( i in { submit: true, reset: true } ) {
	Expr.pseudos[ i ] = createButtonPseudo( i );
}

// Easy API for creating new setFilters
function setFilters() {}
setFilters.prototype = Expr.filters = Expr.pseudos;
Expr.setFilters = new setFilters();

tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
	var matched, match, tokens, type,
		soFar, groups, preFilters,
		cached = tokenCache[ selector + " " ];

	if ( cached ) {
		return parseOnly ? 0 : cached.slice( 0 );
	}

	soFar = selector;
	groups = [];
	preFilters = Expr.preFilter;

	while ( soFar ) {

		// Comma and first run
		if ( !matched || (match = rcomma.exec( soFar )) ) {
			if ( match ) {
				// Don't consume trailing commas as valid
				soFar = soFar.slice( match[0].length ) || soFar;
			}
			groups.push( (tokens = []) );
		}

		matched = false;

		// Combinators
		if ( (match = rcombinators.exec( soFar )) ) {
			matched = match.shift();
			tokens.push({
				value: matched,
				// Cast descendant combinators to space
				type: match[0].replace( rtrim, " " )
			});
			soFar = soFar.slice( matched.length );
		}

		// Filters
		for ( type in Expr.filter ) {
			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
				(match = preFilters[ type ]( match ))) ) {
				matched = match.shift();
				tokens.push({
					value: matched,
					type: type,
					matches: match
				});
				soFar = soFar.slice( matched.length );
			}
		}

		if ( !matched ) {
			break;
		}
	}

	// Return the length of the invalid excess
	// if we're just parsing
	// Otherwise, throw an error or return tokens
	return parseOnly ?
		soFar.length :
		soFar ?
			Sizzle.error( selector ) :
			// Cache the tokens
			tokenCache( selector, groups ).slice( 0 );
};

function toSelector( tokens ) {
	var i = 0,
		len = tokens.length,
		selector = "";
	for ( ; i < len; i++ ) {
		selector += tokens[i].value;
	}
	return selector;
}

function addCombinator( matcher, combinator, base ) {
	var dir = combinator.dir,
		skip = combinator.next,
		key = skip || dir,
		checkNonElements = base && key === "parentNode",
		doneName = done++;

	return combinator.first ?
		// Check against closest ancestor/preceding element
		function( elem, context, xml ) {
			while ( (elem = elem[ dir ]) ) {
				if ( elem.nodeType === 1 || checkNonElements ) {
					return matcher( elem, context, xml );
				}
			}
			return false;
		} :

		// Check against all ancestor/preceding elements
		function( elem, context, xml ) {
			var oldCache, uniqueCache, outerCache,
				newCache = [ dirruns, doneName ];

			// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
			if ( xml ) {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						if ( matcher( elem, context, xml ) ) {
							return true;
						}
					}
				}
			} else {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						outerCache = elem[ expando ] || (elem[ expando ] = {});

						// Support: IE <9 only
						// Defend against cloned attroperties (jQuery gh-1709)
						uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {});

						if ( skip && skip === elem.nodeName.toLowerCase() ) {
							elem = elem[ dir ] || elem;
						} else if ( (oldCache = uniqueCache[ key ]) &&
							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {

							// Assign to newCache so results back-propagate to previous elements
							return (newCache[ 2 ] = oldCache[ 2 ]);
						} else {
							// Reuse newcache so results back-propagate to previous elements
							uniqueCache[ key ] = newCache;

							// A match means we're done; a fail means we have to keep checking
							if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
								return true;
							}
						}
					}
				}
			}
			return false;
		};
}

function elementMatcher( matchers ) {
	return matchers.length > 1 ?
		function( elem, context, xml ) {
			var i = matchers.length;
			while ( i-- ) {
				if ( !matchers[i]( elem, context, xml ) ) {
					return false;
				}
			}
			return true;
		} :
		matchers[0];
}

function multipleContexts( selector, contexts, results ) {
	var i = 0,
		len = contexts.length;
	for ( ; i < len; i++ ) {
		Sizzle( selector, contexts[i], results );
	}
	return results;
}

function condense( unmatched, map, filter, context, xml ) {
	var elem,
		newUnmatched = [],
		i = 0,
		len = unmatched.length,
		mapped = map != null;

	for ( ; i < len; i++ ) {
		if ( (elem = unmatched[i]) ) {
			if ( !filter || filter( elem, context, xml ) ) {
				newUnmatched.push( elem );
				if ( mapped ) {
					map.push( i );
				}
			}
		}
	}

	return newUnmatched;
}

function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
	if ( postFilter && !postFilter[ expando ] ) {
		postFilter = setMatcher( postFilter );
	}
	if ( postFinder && !postFinder[ expando ] ) {
		postFinder = setMatcher( postFinder, postSelector );
	}
	return markFunction(function( seed, results, context, xml ) {
		var temp, i, elem,
			preMap = [],
			postMap = [],
			preexisting = results.length,

			// Get initial elements from seed or context
			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

			// Prefilter to get matcher input, preserving a map for seed-results synchronization
			matcherIn = preFilter && ( seed || !selector ) ?
				condense( elems, preMap, preFilter, context, xml ) :
				elems,

			matcherOut = matcher ?
				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

					// ...intermediate processing is necessary
					[] :

					// ...otherwise use results directly
					results :
				matcherIn;

		// Find primary matches
		if ( matcher ) {
			matcher( matcherIn, matcherOut, context, xml );
		}

		// Apply postFilter
		if ( postFilter ) {
			temp = condense( matcherOut, postMap );
			postFilter( temp, [], context, xml );

			// Un-match failing elements by moving them back to matcherIn
			i = temp.length;
			while ( i-- ) {
				if ( (elem = temp[i]) ) {
					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
				}
			}
		}

		if ( seed ) {
			if ( postFinder || preFilter ) {
				if ( postFinder ) {
					// Get the final matcherOut by condensing this intermediate into postFinder contexts
					temp = [];
					i = matcherOut.length;
					while ( i-- ) {
						if ( (elem = matcherOut[i]) ) {
							// Restore matcherIn since elem is not yet a final match
							temp.push( (matcherIn[i] = elem) );
						}
					}
					postFinder( null, (matcherOut = []), temp, xml );
				}

				// Move matched elements from seed to results to keep them synchronized
				i = matcherOut.length;
				while ( i-- ) {
					if ( (elem = matcherOut[i]) &&
						(temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) {

						seed[temp] = !(results[temp] = elem);
					}
				}
			}

		// Add elements to results, through postFinder if defined
		} else {
			matcherOut = condense(
				matcherOut === results ?
					matcherOut.splice( preexisting, matcherOut.length ) :
					matcherOut
			);
			if ( postFinder ) {
				postFinder( null, results, matcherOut, xml );
			} else {
				push.apply( results, matcherOut );
			}
		}
	});
}

function matcherFromTokens( tokens ) {
	var checkContext, matcher, j,
		len = tokens.length,
		leadingRelative = Expr.relative[ tokens[0].type ],
		implicitRelative = leadingRelative || Expr.relative[" "],
		i = leadingRelative ? 1 : 0,

		// The foundational matcher ensures that elements are reachable from top-level context(s)
		matchContext = addCombinator( function( elem ) {
			return elem === checkContext;
		}, implicitRelative, true ),
		matchAnyContext = addCombinator( function( elem ) {
			return indexOf( checkContext, elem ) > -1;
		}, implicitRelative, true ),
		matchers = [ function( elem, context, xml ) {
			var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
				(checkContext = context).nodeType ?
					matchContext( elem, context, xml ) :
					matchAnyContext( elem, context, xml ) );
			// Avoid hanging onto element (issue #299)
			checkContext = null;
			return ret;
		} ];

	for ( ; i < len; i++ ) {
		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
		} else {
			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

			// Return special upon seeing a positional matcher
			if ( matcher[ expando ] ) {
				// Find the next relative operator (if any) for proper handling
				j = ++i;
				for ( ; j < len; j++ ) {
					if ( Expr.relative[ tokens[j].type ] ) {
						break;
					}
				}
				return setMatcher(
					i > 1 && elementMatcher( matchers ),
					i > 1 && toSelector(
						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
					).replace( rtrim, "$1" ),
					matcher,
					i < j && matcherFromTokens( tokens.slice( i, j ) ),
					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
					j < len && toSelector( tokens )
				);
			}
			matchers.push( matcher );
		}
	}

	return elementMatcher( matchers );
}

function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
	var bySet = setMatchers.length > 0,
		byElement = elementMatchers.length > 0,
		superMatcher = function( seed, context, xml, results, outermost ) {
			var elem, j, matcher,
				matchedCount = 0,
				i = "0",
				unmatched = seed && [],
				setMatched = [],
				contextBackup = outermostContext,
				// We must always have either seed elements or outermost context
				elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
				// Use integer dirruns iff this is the outermost matcher
				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
				len = elems.length;

			if ( outermost ) {
				outermostContext = context === document || context || outermost;
			}

			// Add elements passing elementMatchers directly to results
			// Support: IE<9, Safari
			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
			for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
				if ( byElement && elem ) {
					j = 0;
					if ( !context && elem.ownerDocument !== document ) {
						setDocument( elem );
						xml = !documentIsHTML;
					}
					while ( (matcher = elementMatchers[j++]) ) {
						if ( matcher( elem, context || document, xml) ) {
							results.push( elem );
							break;
						}
					}
					if ( outermost ) {
						dirruns = dirrunsUnique;
					}
				}

				// Track unmatched elements for set filters
				if ( bySet ) {
					// They will have gone through all possible matchers
					if ( (elem = !matcher && elem) ) {
						matchedCount--;
					}

					// Lengthen the array for every element, matched or not
					if ( seed ) {
						unmatched.push( elem );
					}
				}
			}

			// `i` is now the count of elements visited above, and adding it to `matchedCount`
			// makes the latter nonnegative.
			matchedCount += i;

			// Apply set filters to unmatched elements
			// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
			// equals `i`), unless we didn't visit _any_ elements in the above loop because we have
			// no element matchers and no seed.
			// Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
			// case, which will result in a "00" `matchedCount` that differs from `i` but is also
			// numerically zero.
			if ( bySet && i !== matchedCount ) {
				j = 0;
				while ( (matcher = setMatchers[j++]) ) {
					matcher( unmatched, setMatched, context, xml );
				}

				if ( seed ) {
					// Reintegrate element matches to eliminate the need for sorting
					if ( matchedCount > 0 ) {
						while ( i-- ) {
							if ( !(unmatched[i] || setMatched[i]) ) {
								setMatched[i] = pop.call( results );
							}
						}
					}

					// Discard index placeholder values to get only actual matches
					setMatched = condense( setMatched );
				}

				// Add matches to results
				push.apply( results, setMatched );

				// Seedless set matches succeeding multiple successful matchers stipulate sorting
				if ( outermost && !seed && setMatched.length > 0 &&
					( matchedCount + setMatchers.length ) > 1 ) {

					Sizzle.uniqueSort( results );
				}
			}

			// Override manipulation of globals by nested matchers
			if ( outermost ) {
				dirruns = dirrunsUnique;
				outermostContext = contextBackup;
			}

			return unmatched;
		};

	return bySet ?
		markFunction( superMatcher ) :
		superMatcher;
}

compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
	var i,
		setMatchers = [],
		elementMatchers = [],
		cached = compilerCache[ selector + " " ];

	if ( !cached ) {
		// Generate a function of recursive functions that can be used to check each element
		if ( !match ) {
			match = tokenize( selector );
		}
		i = match.length;
		while ( i-- ) {
			cached = matcherFromTokens( match[i] );
			if ( cached[ expando ] ) {
				setMatchers.push( cached );
			} else {
				elementMatchers.push( cached );
			}
		}

		// Cache the compiled function
		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );

		// Save selector and tokenization
		cached.selector = selector;
	}
	return cached;
};

/**
 * A low-level selection function that works with Sizzle's compiled
 *  selector functions
 * @param {String|Function} selector A selector or a pre-compiled
 *  selector function built with Sizzle.compile
 * @param {Element} context
 * @param {Array} [results]
 * @param {Array} [seed] A set of elements to match against
 */
select = Sizzle.select = function( selector, context, results, seed ) {
	var i, tokens, token, type, find,
		compiled = typeof selector === "function" && selector,
		match = !seed && tokenize( (selector = compiled.selector || selector) );

	results = results || [];

	// Try to minimize operations if there is only one selector in the list and no seed
	// (the latter of which guarantees us context)
	if ( match.length === 1 ) {

		// Reduce context if the leading compound selector is an ID
		tokens = match[0] = match[0].slice( 0 );
		if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
				context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[1].type ] ) {

			context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
			if ( !context ) {
				return results;

			// Precompiled matchers will still verify ancestry, so step up a level
			} else if ( compiled ) {
				context = context.parentNode;
			}

			selector = selector.slice( tokens.shift().value.length );
		}

		// Fetch a seed set for right-to-left matching
		i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
		while ( i-- ) {
			token = tokens[i];

			// Abort if we hit a combinator
			if ( Expr.relative[ (type = token.type) ] ) {
				break;
			}
			if ( (find = Expr.find[ type ]) ) {
				// Search, expanding context for leading sibling combinators
				if ( (seed = find(
					token.matches[0].replace( runescape, funescape ),
					rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
				)) ) {

					// If seed is empty or no tokens remain, we can return early
					tokens.splice( i, 1 );
					selector = seed.length && toSelector( tokens );
					if ( !selector ) {
						push.apply( results, seed );
						return results;
					}

					break;
				}
			}
		}
	}

	// Compile and execute a filtering function if one is not provided
	// Provide `match` to avoid retokenization if we modified the selector above
	( compiled || compile( selector, match ) )(
		seed,
		context,
		!documentIsHTML,
		results,
		!context || rsibling.test( selector ) && testContext( context.parentNode ) || context
	);
	return results;
};

// One-time assignments

// Sort stability
support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;

// Support: Chrome 14-35+
// Always assume duplicates if they aren't passed to the comparison function
support.detectDuplicates = !!hasDuplicate;

// Initialize against the default document
setDocument();

// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
// Detached nodes confoundingly follow *each other*
support.sortDetached = assert(function( el ) {
	// Should return 1, but returns 4 (following)
	return el.compareDocumentPosition( document.createElement("fieldset") ) & 1;
});

// Support: IE<8
// Prevent attribute/property "interpolation"
// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert(function( el ) {
	el.innerHTML = "<a href='#'></a>";
	return el.firstChild.getAttribute("href") === "#" ;
}) ) {
	addHandle( "type|href|height|width", function( elem, name, isXML ) {
		if ( !isXML ) {
			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
		}
	});
}

// Support: IE<9
// Use defaultValue in place of getAttribute("value")
if ( !support.attributes || !assert(function( el ) {
	el.innerHTML = "<input/>";
	el.firstChild.setAttribute( "value", "" );
	return el.firstChild.getAttribute( "value" ) === "";
}) ) {
	addHandle( "value", function( elem, name, isXML ) {
		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
			return elem.defaultValue;
		}
	});
}

// Support: IE<9
// Use getAttributeNode to fetch booleans when getAttribute lies
if ( !assert(function( el ) {
	return el.getAttribute("disabled") == null;
}) ) {
	addHandle( booleans, function( elem, name, isXML ) {
		var val;
		if ( !isXML ) {
			return elem[ name ] === true ? name.toLowerCase() :
					(val = elem.getAttributeNode( name )) && val.specified ?
					val.value :
				null;
		}
	});
}

return Sizzle;

})( window );



jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;

// Deprecated
jQuery.expr[ ":" ] = jQuery.expr.pseudos;
jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
jQuery.text = Sizzle.getText;
jQuery.isXMLDoc = Sizzle.isXML;
jQuery.contains = Sizzle.contains;
jQuery.escapeSelector = Sizzle.escape;




var dir = function( elem, dir, until ) {
	var matched = [],
		truncate = until !== undefined;

	while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
		if ( elem.nodeType === 1 ) {
			if ( truncate && jQuery( elem ).is( until ) ) {
				break;
			}
			matched.push( elem );
		}
	}
	return matched;
};


var siblings = function( n, elem ) {
	var matched = [];

	for ( ; n; n = n.nextSibling ) {
		if ( n.nodeType === 1 && n !== elem ) {
			matched.push( n );
		}
	}

	return matched;
};


var rneedsContext = jQuery.expr.match.needsContext;



function nodeName( elem, name ) {

  return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();

};
var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );



// Implement the identical functionality for filter and not
function winnow( elements, qualifier, not ) {
	if ( isFunction( qualifier ) ) {
		return jQuery.grep( elements, function( elem, i ) {
			return !!qualifier.call( elem, i, elem ) !== not;
		} );
	}

	// Single element
	if ( qualifier.nodeType ) {
		return jQuery.grep( elements, function( elem ) {
			return ( elem === qualifier ) !== not;
		} );
	}

	// Arraylike of elements (jQuery, arguments, Array)
	if ( typeof qualifier !== "string" ) {
		return jQuery.grep( elements, function( elem ) {
			return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
		} );
	}

	// Filtered directly for both simple and complex selectors
	return jQuery.filter( qualifier, elements, not );
}

jQuery.filter = function( expr, elems, not ) {
	var elem = elems[ 0 ];

	if ( not ) {
		expr = ":not(" + expr + ")";
	}

	if ( elems.length === 1 && elem.nodeType === 1 ) {
		return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
	}

	return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
		return elem.nodeType === 1;
	} ) );
};

jQuery.fn.extend( {
	find: function( selector ) {
		var i, ret,
			len = this.length,
			self = this;

		if ( typeof selector !== "string" ) {
			return this.pushStack( jQuery( selector ).filter( function() {
				for ( i = 0; i < len; i++ ) {
					if ( jQuery.contains( self[ i ], this ) ) {
						return true;
					}
				}
			} ) );
		}

		ret = this.pushStack( [] );

		for ( i = 0; i < len; i++ ) {
			jQuery.find( selector, self[ i ], ret );
		}

		return len > 1 ? jQuery.uniqueSort( ret ) : ret;
	},
	filter: function( selector ) {
		return this.pushStack( winnow( this, selector || [], false ) );
	},
	not: function( selector ) {
		return this.pushStack( winnow( this, selector || [], true ) );
	},
	is: function( selector ) {
		return !!winnow(
			this,

			// If this is a positional/relative selector, check membership in the returned set
			// so $("p:first").is("p:last") won't return true for a doc with two "p".
			typeof selector === "string" && rneedsContext.test( selector ) ?
				jQuery( selector ) :
				selector || [],
			false
		).length;
	}
} );


// Initialize a jQuery object


// A central reference to the root jQuery(document)
var rootjQuery,

	// A simple way to check for HTML strings
	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
	// Strict HTML recognition (#11290: must start with <)
	// Shortcut simple #id case for speed
	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,

	init = jQuery.fn.init = function( selector, context, root ) {
		var match, elem;

		// HANDLE: $(""), $(null), $(undefined), $(false)
		if ( !selector ) {
			return this;
		}

		// Method init() accepts an alternate rootjQuery
		// so migrate can support jQuery.sub (gh-2101)
		root = root || rootjQuery;

		// Handle HTML strings
		if ( typeof selector === "string" ) {
			if ( selector[ 0 ] === "<" &&
				selector[ selector.length - 1 ] === ">" &&
				selector.length >= 3 ) {

				// Assume that strings that start and end with <> are HTML and skip the regex check
				match = [ null, selector, null ];

			} else {
				match = rquickExpr.exec( selector );
			}

			// Match html or make sure no context is specified for #id
			if ( match && ( match[ 1 ] || !context ) ) {

				// HANDLE: $(html) -> $(array)
				if ( match[ 1 ] ) {
					context = context instanceof jQuery ? context[ 0 ] : context;

					// Option to run scripts is true for back-compat
					// Intentionally let the error be thrown if parseHTML is not present
					jQuery.merge( this, jQuery.parseHTML(
						match[ 1 ],
						context && context.nodeType ? context.ownerDocument || context : document,
						true
					) );

					// HANDLE: $(html, props)
					if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
						for ( match in context ) {

							// Properties of context are called as methods if possible
							if ( isFunction( this[ match ] ) ) {
								this[ match ]( context[ match ] );

							// ...and otherwise set as attributes
							} else {
								this.attr( match, context[ match ] );
							}
						}
					}

					return this;

				// HANDLE: $(#id)
				} else {
					elem = document.getElementById( match[ 2 ] );

					if ( elem ) {

						// Inject the element directly into the jQuery object
						this[ 0 ] = elem;
						this.length = 1;
					}
					return this;
				}

			// HANDLE: $(expr, $(...))
			} else if ( !context || context.jquery ) {
				return ( context || root ).find( selector );

			// HANDLE: $(expr, context)
			// (which is just equivalent to: $(context).find(expr)
			} else {
				return this.constructor( context ).find( selector );
			}

		// HANDLE: $(DOMElement)
		} else if ( selector.nodeType ) {
			this[ 0 ] = selector;
			this.length = 1;
			return this;

		// HANDLE: $(function)
		// Shortcut for document ready
		} else if ( isFunction( selector ) ) {
			return root.ready !== undefined ?
				root.ready( selector ) :

				// Execute immediately if ready is not present
				selector( jQuery );
		}

		return jQuery.makeArray( selector, this );
	};

// Give the init function the jQuery prototype for later instantiation
init.prototype = jQuery.fn;

// Initialize central reference
rootjQuery = jQuery( document );


var rparentsprev = /^(?:parents|prev(?:Until|All))/,

	// Methods guaranteed to produce a unique set when starting from a unique set
	guaranteedUnique = {
		children: true,
		contents: true,
		next: true,
		prev: true
	};

jQuery.fn.extend( {
	has: function( target ) {
		var targets = jQuery( target, this ),
			l = targets.length;

		return this.filter( function() {
			var i = 0;
			for ( ; i < l; i++ ) {
				if ( jQuery.contains( this, targets[ i ] ) ) {
					return true;
				}
			}
		} );
	},

	closest: function( selectors, context ) {
		var cur,
			i = 0,
			l = this.length,
			matched = [],
			targets = typeof selectors !== "string" && jQuery( selectors );

		// Positional selectors never match, since there's no _selection_ context
		if ( !rneedsContext.test( selectors ) ) {
			for ( ; i < l; i++ ) {
				for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {

					// Always skip document fragments
					if ( cur.nodeType < 11 && ( targets ?
						targets.index( cur ) > -1 :

						// Don't pass non-elements to Sizzle
						cur.nodeType === 1 &&
							jQuery.find.matchesSelector( cur, selectors ) ) ) {

						matched.push( cur );
						break;
					}
				}
			}
		}

		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
	},

	// Determine the position of an element within the set
	index: function( elem ) {

		// No argument, return index in parent
		if ( !elem ) {
			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
		}

		// Index in selector
		if ( typeof elem === "string" ) {
			return indexOf.call( jQuery( elem ), this[ 0 ] );
		}

		// Locate the position of the desired element
		return indexOf.call( this,

			// If it receives a jQuery object, the first element is used
			elem.jquery ? elem[ 0 ] : elem
		);
	},

	add: function( selector, context ) {
		return this.pushStack(
			jQuery.uniqueSort(
				jQuery.merge( this.get(), jQuery( selector, context ) )
			)
		);
	},

	addBack: function( selector ) {
		return this.add( selector == null ?
			this.prevObject : this.prevObject.filter( selector )
		);
	}
} );

function sibling( cur, dir ) {
	while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
	return cur;
}

jQuery.each( {
	parent: function( elem ) {
		var parent = elem.parentNode;
		return parent && parent.nodeType !== 11 ? parent : null;
	},
	parents: function( elem ) {
		return dir( elem, "parentNode" );
	},
	parentsUntil: function( elem, i, until ) {
		return dir( elem, "parentNode", until );
	},
	next: function( elem ) {
		return sibling( elem, "nextSibling" );
	},
	prev: function( elem ) {
		return sibling( elem, "previousSibling" );
	},
	nextAll: function( elem ) {
		return dir( elem, "nextSibling" );
	},
	prevAll: function( elem ) {
		return dir( elem, "previousSibling" );
	},
	nextUntil: function( elem, i, until ) {
		return dir( elem, "nextSibling", until );
	},
	prevUntil: function( elem, i, until ) {
		return dir( elem, "previousSibling", until );
	},
	siblings: function( elem ) {
		return siblings( ( elem.parentNode || {} ).firstChild, elem );
	},
	children: function( elem ) {
		return siblings( elem.firstChild );
	},
	contents: function( elem ) {
        if ( nodeName( elem, "iframe" ) ) {
            return elem.contentDocument;
        }

        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
        // Treat the template element as a regular one in browsers that
        // don't support it.
        if ( nodeName( elem, "template" ) ) {
            elem = elem.content || elem;
        }

        return jQuery.merge( [], elem.childNodes );
	}
}, function( name, fn ) {
	jQuery.fn[ name ] = function( until, selector ) {
		var matched = jQuery.map( this, fn, until );

		if ( name.slice( -5 ) !== "Until" ) {
			selector = until;
		}

		if ( selector && typeof selector === "string" ) {
			matched = jQuery.filter( selector, matched );
		}

		if ( this.length > 1 ) {

			// Remove duplicates
			if ( !guaranteedUnique[ name ] ) {
				jQuery.uniqueSort( matched );
			}

			// Reverse order for parents* and prev-derivatives
			if ( rparentsprev.test( name ) ) {
				matched.reverse();
			}
		}

		return this.pushStack( matched );
	};
} );
var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g );



// Convert String-formatted options into Object-formatted ones
function createOptions( options ) {
	var object = {};
	jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {
		object[ flag ] = true;
	} );
	return object;
}

/*
 * Create a callback list using the following parameters:
 *
 *	options: an optional list of space-separated options that will change how
 *			the callback list behaves or a more traditional option object
 *
 * By default a callback list will act like an event callback list and can be
 * "fired" multiple times.
 *
 * Possible options:
 *
 *	once:			will ensure the callback list can only be fired once (like a Deferred)
 *
 *	memory:			will keep track of previous values and will call any callback added
 *					after the list has been fired right away with the latest "memorized"
 *					values (like a Deferred)
 *
 *	unique:			will ensure a callback can only be added once (no duplicate in the list)
 *
 *	stopOnFalse:	interrupt callings when a callback returns false
 *
 */
jQuery.Callbacks = function( options ) {

	// Convert options from String-formatted to Object-formatted if needed
	// (we check in cache first)
	options = typeof options === "string" ?
		createOptions( options ) :
		jQuery.extend( {}, options );

	var // Flag to know if list is currently firing
		firing,

		// Last fire value for non-forgettable lists
		memory,

		// Flag to know if list was already fired
		fired,

		// Flag to prevent firing
		locked,

		// Actual callback list
		list = [],

		// Queue of execution data for repeatable lists
		queue = [],

		// Index of currently firing callback (modified by add/remove as needed)
		firingIndex = -1,

		// Fire callbacks
		fire = function() {

			// Enforce single-firing
			locked = locked || options.once;

			// Execute callbacks for all pending executions,
			// respecting firingIndex overrides and runtime changes
			fired = firing = true;
			for ( ; queue.length; firingIndex = -1 ) {
				memory = queue.shift();
				while ( ++firingIndex < list.length ) {

					// Run callback and check for early termination
					if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
						options.stopOnFalse ) {

						// Jump to end and forget the data so .add doesn't re-fire
						firingIndex = list.length;
						memory = false;
					}
				}
			}

			// Forget the data if we're done with it
			if ( !options.memory ) {
				memory = false;
			}

			firing = false;

			// Clean up if we're done firing for good
			if ( locked ) {

				// Keep an empty list if we have data for future add calls
				if ( memory ) {
					list = [];

				// Otherwise, this object is spent
				} else {
					list = "";
				}
			}
		},

		// Actual Callbacks object
		self = {

			// Add a callback or a collection of callbacks to the list
			add: function() {
				if ( list ) {

					// If we have memory from a past run, we should fire after adding
					if ( memory && !firing ) {
						firingIndex = list.length - 1;
						queue.push( memory );
					}

					( function add( args ) {
						jQuery.each( args, function( _, arg ) {
							if ( isFunction( arg ) ) {
								if ( !options.unique || !self.has( arg ) ) {
									list.push( arg );
								}
							} else if ( arg && arg.length && toType( arg ) !== "string" ) {

								// Inspect recursively
								add( arg );
							}
						} );
					} )( arguments );

					if ( memory && !firing ) {
						fire();
					}
				}
				return this;
			},

			// Remove a callback from the list
			remove: function() {
				jQuery.each( arguments, function( _, arg ) {
					var index;
					while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
						list.splice( index, 1 );

						// Handle firing indexes
						if ( index <= firingIndex ) {
							firingIndex--;
						}
					}
				} );
				return this;
			},

			// Check if a given callback is in the list.
			// If no argument is given, return whether or not list has callbacks attached.
			has: function( fn ) {
				return fn ?
					jQuery.inArray( fn, list ) > -1 :
					list.length > 0;
			},

			// Remove all callbacks from the list
			empty: function() {
				if ( list ) {
					list = [];
				}
				return this;
			},

			// Disable .fire and .add
			// Abort any current/pending executions
			// Clear all callbacks and values
			disable: function() {
				locked = queue = [];
				list = memory = "";
				return this;
			},
			disabled: function() {
				return !list;
			},

			// Disable .fire
			// Also disable .add unless we have memory (since it would have no effect)
			// Abort any pending executions
			lock: function() {
				locked = queue = [];
				if ( !memory && !firing ) {
					list = memory = "";
				}
				return this;
			},
			locked: function() {
				return !!locked;
			},

			// Call all callbacks with the given context and arguments
			fireWith: function( context, args ) {
				if ( !locked ) {
					args = args || [];
					args = [ context, args.slice ? args.slice() : args ];
					queue.push( args );
					if ( !firing ) {
						fire();
					}
				}
				return this;
			},

			// Call all the callbacks with the given arguments
			fire: function() {
				self.fireWith( this, arguments );
				return this;
			},

			// To know if the callbacks have already been called at least once
			fired: function() {
				return !!fired;
			}
		};

	return self;
};


function Identity( v ) {
	return v;
}
function Thrower( ex ) {
	throw ex;
}

function adoptValue( value, resolve, reject, noValue ) {
	var method;

	try {

		// Check for promise aspect first to privilege synchronous behavior
		if ( value && isFunction( ( method = value.promise ) ) ) {
			method.call( value ).done( resolve ).fail( reject );

		// Other thenables
		} else if ( value && isFunction( ( method = value.then ) ) ) {
			method.call( value, resolve, reject );

		// Other non-thenables
		} else {

			// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
			// * false: [ value ].slice( 0 ) => resolve( value )
			// * true: [ value ].slice( 1 ) => resolve()
			resolve.apply( undefined, [ value ].slice( noValue ) );
		}

	// For Promises/A+, convert exceptions into rejections
	// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
	// Deferred#then to conditionally suppress rejection.
	} catch ( value ) {

		// Support: Android 4.0 only
		// Strict mode functions invoked without .call/.apply get global-object context
		reject.apply( undefined, [ value ] );
	}
}

jQuery.extend( {

	Deferred: function( func ) {
		var tuples = [

				// action, add listener, callbacks,
				// ... .then handlers, argument index, [final state]
				[ "notify", "progress", jQuery.Callbacks( "memory" ),
					jQuery.Callbacks( "memory" ), 2 ],
				[ "resolve", "done", jQuery.Callbacks( "once memory" ),
					jQuery.Callbacks( "once memory" ), 0, "resolved" ],
				[ "reject", "fail", jQuery.Callbacks( "once memory" ),
					jQuery.Callbacks( "once memory" ), 1, "rejected" ]
			],
			state = "pending",
			promise = {
				state: function() {
					return state;
				},
				always: function() {
					deferred.done( arguments ).fail( arguments );
					return this;
				},
				"catch": function( fn ) {
					return promise.then( null, fn );
				},

				// Keep pipe for back-compat
				pipe: function( /* fnDone, fnFail, fnProgress */ ) {
					var fns = arguments;

					return jQuery.Deferred( function( newDefer ) {
						jQuery.each( tuples, function( i, tuple ) {

							// Map tuples (progress, done, fail) to arguments (done, fail, progress)
							var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];

							// deferred.progress(function() { bind to newDefer or newDefer.notify })
							// deferred.done(function() { bind to newDefer or newDefer.resolve })
							// deferred.fail(function() { bind to newDefer or newDefer.reject })
							deferred[ tuple[ 1 ] ]( function() {
								var returned = fn && fn.apply( this, arguments );
								if ( returned && isFunction( returned.promise ) ) {
									returned.promise()
										.progress( newDefer.notify )
										.done( newDefer.resolve )
										.fail( newDefer.reject );
								} else {
									newDefer[ tuple[ 0 ] + "With" ](
										this,
										fn ? [ returned ] : arguments
									);
								}
							} );
						} );
						fns = null;
					} ).promise();
				},
				then: function( onFulfilled, onRejected, onProgress ) {
					var maxDepth = 0;
					function resolve( depth, deferred, handler, special ) {
						return function() {
							var that = this,
								args = arguments,
								mightThrow = function() {
									var returned, then;

									// Support: Promises/A+ section 2.3.3.3.3
									// https://promisesaplus.com/#point-59
									// Ignore double-resolution attempts
									if ( depth < maxDepth ) {
										return;
									}

									returned = handler.apply( that, args );

									// Support: Promises/A+ section 2.3.1
									// https://promisesaplus.com/#point-48
									if ( returned === deferred.promise() ) {
										throw new TypeError( "Thenable self-resolution" );
									}

									// Support: Promises/A+ sections 2.3.3.1, 3.5
									// https://promisesaplus.com/#point-54
									// https://promisesaplus.com/#point-75
									// Retrieve `then` only once
									then = returned &&

										// Support: Promises/A+ section 2.3.4
										// https://promisesaplus.com/#point-64
										// Only check objects and functions for thenability
										( typeof returned === "object" ||
											typeof returned === "function" ) &&
										returned.then;

									// Handle a returned thenable
									if ( isFunction( then ) ) {

										// Special processors (notify) just wait for resolution
										if ( special ) {
											then.call(
												returned,
												resolve( maxDepth, deferred, Identity, special ),
												resolve( maxDepth, deferred, Thrower, special )
											);

										// Normal processors (resolve) also hook into progress
										} else {

											// ...and disregard older resolution values
											maxDepth++;

											then.call(
												returned,
												resolve( maxDepth, deferred, Identity, special ),
												resolve( maxDepth, deferred, Thrower, special ),
												resolve( maxDepth, deferred, Identity,
													deferred.notifyWith )
											);
										}

									// Handle all other returned values
									} else {

										// Only substitute handlers pass on context
										// and multiple values (non-spec behavior)
										if ( handler !== Identity ) {
											that = undefined;
											args = [ returned ];
										}

										// Process the value(s)
										// Default process is resolve
										( special || deferred.resolveWith )( that, args );
									}
								},

								// Only normal processors (resolve) catch and reject exceptions
								process = special ?
									mightThrow :
									function() {
										try {
											mightThrow();
										} catch ( e ) {

											if ( jQuery.Deferred.exceptionHook ) {
												jQuery.Deferred.exceptionHook( e,
													process.stackTrace );
											}

											// Support: Promises/A+ section 2.3.3.3.4.1
											// https://promisesaplus.com/#point-61
											// Ignore post-resolution exceptions
											if ( depth + 1 >= maxDepth ) {

												// Only substitute handlers pass on context
												// and multiple values (non-spec behavior)
												if ( handler !== Thrower ) {
													that = undefined;
													args = [ e ];
												}

												deferred.rejectWith( that, args );
											}
										}
									};

							// Support: Promises/A+ section 2.3.3.3.1
							// https://promisesaplus.com/#point-57
							// Re-resolve promises immediately to dodge false rejection from
							// subsequent errors
							if ( depth ) {
								process();
							} else {

								// Call an optional hook to record the stack, in case of exception
								// since it's otherwise lost when execution goes async
								if ( jQuery.Deferred.getStackHook ) {
									process.stackTrace = jQuery.Deferred.getStackHook();
								}
								window.setTimeout( process );
							}
						};
					}

					return jQuery.Deferred( function( newDefer ) {

						// progress_handlers.add( ... )
						tuples[ 0 ][ 3 ].add(
							resolve(
								0,
								newDefer,
								isFunction( onProgress ) ?
									onProgress :
									Identity,
								newDefer.notifyWith
							)
						);

						// fulfilled_handlers.add( ... )
						tuples[ 1 ][ 3 ].add(
							resolve(
								0,
								newDefer,
								isFunction( onFulfilled ) ?
									onFulfilled :
									Identity
							)
						);

						// rejected_handlers.add( ... )
						tuples[ 2 ][ 3 ].add(
							resolve(
								0,
								newDefer,
								isFunction( onRejected ) ?
									onRejected :
									Thrower
							)
						);
					} ).promise();
				},

				// Get a promise for this deferred
				// If obj is provided, the promise aspect is added to the object
				promise: function( obj ) {
					return obj != null ? jQuery.extend( obj, promise ) : promise;
				}
			},
			deferred = {};

		// Add list-specific methods
		jQuery.each( tuples, function( i, tuple ) {
			var list = tuple[ 2 ],
				stateString = tuple[ 5 ];

			// promise.progress = list.add
			// promise.done = list.add
			// promise.fail = list.add
			promise[ tuple[ 1 ] ] = list.add;

			// Handle state
			if ( stateString ) {
				list.add(
					function() {

						// state = "resolved" (i.e., fulfilled)
						// state = "rejected"
						state = stateString;
					},

					// rejected_callbacks.disable
					// fulfilled_callbacks.disable
					tuples[ 3 - i ][ 2 ].disable,

					// rejected_handlers.disable
					// fulfilled_handlers.disable
					tuples[ 3 - i ][ 3 ].disable,

					// progress_callbacks.lock
					tuples[ 0 ][ 2 ].lock,

					// progress_handlers.lock
					tuples[ 0 ][ 3 ].lock
				);
			}

			// progress_handlers.fire
			// fulfilled_handlers.fire
			// rejected_handlers.fire
			list.add( tuple[ 3 ].fire );

			// deferred.notify = function() { deferred.notifyWith(...) }
			// deferred.resolve = function() { deferred.resolveWith(...) }
			// deferred.reject = function() { deferred.rejectWith(...) }
			deferred[ tuple[ 0 ] ] = function() {
				deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments );
				return this;
			};

			// deferred.notifyWith = list.fireWith
			// deferred.resolveWith = list.fireWith
			// deferred.rejectWith = list.fireWith
			deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
		} );

		// Make the deferred a promise
		promise.promise( deferred );

		// Call given func if any
		if ( func ) {
			func.call( deferred, deferred );
		}

		// All done!
		return deferred;
	},

	// Deferred helper
	when: function( singleValue ) {
		var

			// count of uncompleted subordinates
			remaining = arguments.length,

			// count of unprocessed arguments
			i = remaining,

			// subordinate fulfillment data
			resolveContexts = Array( i ),
			resolveValues = slice.call( arguments ),

			// the master Deferred
			master = jQuery.Deferred(),

			// subordinate callback factory
			updateFunc = function( i ) {
				return function( value ) {
					resolveContexts[ i ] = this;
					resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
					if ( !( --remaining ) ) {
						master.resolveWith( resolveContexts, resolveValues );
					}
				};
			};

		// Single- and empty arguments are adopted like Promise.resolve
		if ( remaining <= 1 ) {
			adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject,
				!remaining );

			// Use .then() to unwrap secondary thenables (cf. gh-3000)
			if ( master.state() === "pending" ||
				isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {

				return master.then();
			}
		}

		// Multiple arguments are aggregated like Promise.all array elements
		while ( i-- ) {
			adoptValue( resolveValues[ i ], updateFunc( i ), master.reject );
		}

		return master.promise();
	}
} );


// These usually indicate a programmer mistake during development,
// warn about them ASAP rather than swallowing them by default.
var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;

jQuery.Deferred.exceptionHook = function( error, stack ) {

	// Support: IE 8 - 9 only
	// Console exists when dev tools are open, which can happen at any time
	if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
		window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack );
	}
};




jQuery.readyException = function( error ) {
	window.setTimeout( function() {
		throw error;
	} );
};




// The deferred used on DOM ready
var readyList = jQuery.Deferred();

jQuery.fn.ready = function( fn ) {

	readyList
		.then( fn )

		// Wrap jQuery.readyException in a function so that the lookup
		// happens at the time of error handling instead of callback
		// registration.
		.catch( function( error ) {
			jQuery.readyException( error );
		} );

	return this;
};

jQuery.extend( {

	// Is the DOM ready to be used? Set to true once it occurs.
	isReady: false,

	// A counter to track how many items to wait for before
	// the ready event fires. See #6781
	readyWait: 1,

	// Handle when the DOM is ready
	ready: function( wait ) {

		// Abort if there are pending holds or we're already ready
		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
			return;
		}

		// Remember that the DOM is ready
		jQuery.isReady = true;

		// If a normal DOM Ready event fired, decrement, and wait if need be
		if ( wait !== true && --jQuery.readyWait > 0 ) {
			return;
		}

		// If there are functions bound, to execute
		readyList.resolveWith( document, [ jQuery ] );
	}
} );

jQuery.ready.then = readyList.then;

// The ready event handler and self cleanup method
function completed() {
	document.removeEventListener( "DOMContentLoaded", completed );
	window.removeEventListener( "load", completed );
	jQuery.ready();
}

// Catch cases where $(document).ready() is called
// after the browser event has already occurred.
// Support: IE <=9 - 10 only
// Older IE sometimes signals "interactive" too soon
if ( document.readyState === "complete" ||
	( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {

	// Handle it asynchronously to allow scripts the opportunity to delay ready
	window.setTimeout( jQuery.ready );

} else {

	// Use the handy event callback
	document.addEventListener( "DOMContentLoaded", completed );

	// A fallback to window.onload, that will always work
	window.addEventListener( "load", completed );
}




// Multifunctional method to get and set values of a collection
// The value/s can optionally be executed if it's a function
var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
	var i = 0,
		len = elems.length,
		bulk = key == null;

	// Sets many values
	if ( toType( key ) === "object" ) {
		chainable = true;
		for ( i in key ) {
			access( elems, fn, i, key[ i ], true, emptyGet, raw );
		}

	// Sets one value
	} else if ( value !== undefined ) {
		chainable = true;

		if ( !isFunction( value ) ) {
			raw = true;
		}

		if ( bulk ) {

			// Bulk operations run against the entire set
			if ( raw ) {
				fn.call( elems, value );
				fn = null;

			// ...except when executing function values
			} else {
				bulk = fn;
				fn = function( elem, key, value ) {
					return bulk.call( jQuery( elem ), value );
				};
			}
		}

		if ( fn ) {
			for ( ; i < len; i++ ) {
				fn(
					elems[ i ], key, raw ?
					value :
					value.call( elems[ i ], i, fn( elems[ i ], key ) )
				);
			}
		}
	}

	if ( chainable ) {
		return elems;
	}

	// Gets
	if ( bulk ) {
		return fn.call( elems );
	}

	return len ? fn( elems[ 0 ], key ) : emptyGet;
};


// Matches dashed string for camelizing
var rmsPrefix = /^-ms-/,
	rdashAlpha = /-([a-z])/g;

// Used by camelCase as callback to replace()
function fcamelCase( all, letter ) {
	return letter.toUpperCase();
}

// Convert dashed to camelCase; used by the css and data modules
// Support: IE <=9 - 11, Edge 12 - 15
// Microsoft forgot to hump their vendor prefix (#9572)
function camelCase( string ) {
	return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
}
var acceptData = function( owner ) {

	// Accepts only:
	//  - Node
	//    - Node.ELEMENT_NODE
	//    - Node.DOCUMENT_NODE
	//  - Object
	//    - Any
	return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
};




function Data() {
	this.expando = jQuery.expando + Data.uid++;
}

Data.uid = 1;

Data.prototype = {

	cache: function( owner ) {

		// Check if the owner object already has a cache
		var value = owner[ this.expando ];

		// If not, create one
		if ( !value ) {
			value = {};

			// We can accept data for non-element nodes in modern browsers,
			// but we should not, see #8335.
			// Always return an empty object.
			if ( acceptData( owner ) ) {

				// If it is a node unlikely to be stringify-ed or looped over
				// use plain assignment
				if ( owner.nodeType ) {
					owner[ this.expando ] = value;

				// Otherwise secure it in a non-enumerable property
				// configurable must be true to allow the property to be
				// deleted when data is removed
				} else {
					Object.defineProperty( owner, this.expando, {
						value: value,
						configurable: true
					} );
				}
			}
		}

		return value;
	},
	set: function( owner, data, value ) {
		var prop,
			cache = this.cache( owner );

		// Handle: [ owner, key, value ] args
		// Always use camelCase key (gh-2257)
		if ( typeof data === "string" ) {
			cache[ camelCase( data ) ] = value;

		// Handle: [ owner, { properties } ] args
		} else {

			// Copy the properties one-by-one to the cache object
			for ( prop in data ) {
				cache[ camelCase( prop ) ] = data[ prop ];
			}
		}
		return cache;
	},
	get: function( owner, key ) {
		return key === undefined ?
			this.cache( owner ) :

			// Always use camelCase key (gh-2257)
			owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];
	},
	access: function( owner, key, value ) {

		// In cases where either:
		//
		//   1. No key was specified
		//   2. A string key was specified, but no value provided
		//
		// Take the "read" path and allow the get method to determine
		// which value to return, respectively either:
		//
		//   1. The entire cache object
		//   2. The data stored at the key
		//
		if ( key === undefined ||
				( ( key && typeof key === "string" ) && value === undefined ) ) {

			return this.get( owner, key );
		}

		// When the key is not a string, or both a key and value
		// are specified, set or extend (existing objects) with either:
		//
		//   1. An object of properties
		//   2. A key and value
		//
		this.set( owner, key, value );

		// Since the "set" path can have two possible entry points
		// return the expected data based on which path was taken[*]
		return value !== undefined ? value : key;
	},
	remove: function( owner, key ) {
		var i,
			cache = owner[ this.expando ];

		if ( cache === undefined ) {
			return;
		}

		if ( key !== undefined ) {

			// Support array or space separated string of keys
			if ( Array.isArray( key ) ) {

				// If key is an array of keys...
				// We always set camelCase keys, so remove that.
				key = key.map( camelCase );
			} else {
				key = camelCase( key );

				// If a key with the spaces exists, use it.
				// Otherwise, create an array by matching non-whitespace
				key = key in cache ?
					[ key ] :
					( key.match( rnothtmlwhite ) || [] );
			}

			i = key.length;

			while ( i-- ) {
				delete cache[ key[ i ] ];
			}
		}

		// Remove the expando if there's no more data
		if ( key === undefined || jQuery.isEmptyObject( cache ) ) {

			// Support: Chrome <=35 - 45
			// Webkit & Blink performance suffers when deleting properties
			// from DOM nodes, so set to undefined instead
			// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
			if ( owner.nodeType ) {
				owner[ this.expando ] = undefined;
			} else {
				delete owner[ this.expando ];
			}
		}
	},
	hasData: function( owner ) {
		var cache = owner[ this.expando ];
		return cache !== undefined && !jQuery.isEmptyObject( cache );
	}
};
var dataPriv = new Data();

var dataUser = new Data();



//	Implementation Summary
//
//	1. Enforce API surface and semantic compatibility with 1.9.x branch
//	2. Improve the module's maintainability by reducing the storage
//		paths to a single mechanism.
//	3. Use the same single mechanism to support "private" and "user" data.
//	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
//	5. Avoid exposing implementation details on user objects (eg. expando properties)
//	6. Provide a clear path for implementation upgrade to WeakMap in 2014

var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
	rmultiDash = /[A-Z]/g;

function getData( data ) {
	if ( data === "true" ) {
		return true;
	}

	if ( data === "false" ) {
		return false;
	}

	if ( data === "null" ) {
		return null;
	}

	// Only convert to a number if it doesn't change the string
	if ( data === +data + "" ) {
		return +data;
	}

	if ( rbrace.test( data ) ) {
		return JSON.parse( data );
	}

	return data;
}

function dataAttr( elem, key, data ) {
	var name;

	// If nothing was found internally, try to fetch any
	// data from the HTML5 data-* attribute
	if ( data === undefined && elem.nodeType === 1 ) {
		name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
		data = elem.getAttribute( name );

		if ( typeof data === "string" ) {
			try {
				data = getData( data );
			} catch ( e ) {}

			// Make sure we set the data so it isn't changed later
			dataUser.set( elem, key, data );
		} else {
			data = undefined;
		}
	}
	return data;
}

jQuery.extend( {
	hasData: function( elem ) {
		return dataUser.hasData( elem ) || dataPriv.hasData( elem );
	},

	data: function( elem, name, data ) {
		return dataUser.access( elem, name, data );
	},

	removeData: function( elem, name ) {
		dataUser.remove( elem, name );
	},

	// TODO: Now that all calls to _data and _removeData have been replaced
	// with direct calls to dataPriv methods, these can be deprecated.
	_data: function( elem, name, data ) {
		return dataPriv.access( elem, name, data );
	},

	_removeData: function( elem, name ) {
		dataPriv.remove( elem, name );
	}
} );

jQuery.fn.extend( {
	data: function( key, value ) {
		var i, name, data,
			elem = this[ 0 ],
			attrs = elem && elem.attributes;

		// Gets all values
		if ( key === undefined ) {
			if ( this.length ) {
				data = dataUser.get( elem );

				if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
					i = attrs.length;
					while ( i-- ) {

						// Support: IE 11 only
						// The attrs elements can be null (#14894)
						if ( attrs[ i ] ) {
							name = attrs[ i ].name;
							if ( name.indexOf( "data-" ) === 0 ) {
								name = camelCase( name.slice( 5 ) );
								dataAttr( elem, name, data[ name ] );
							}
						}
					}
					dataPriv.set( elem, "hasDataAttrs", true );
				}
			}

			return data;
		}

		// Sets multiple values
		if ( typeof key === "object" ) {
			return this.each( function() {
				dataUser.set( this, key );
			} );
		}

		return access( this, function( value ) {
			var data;

			// The calling jQuery object (element matches) is not empty
			// (and therefore has an element appears at this[ 0 ]) and the
			// `value` parameter was not undefined. An empty jQuery object
			// will result in `undefined` for elem = this[ 0 ] which will
			// throw an exception if an attempt to read a data cache is made.
			if ( elem && value === undefined ) {

				// Attempt to get data from the cache
				// The key will always be camelCased in Data
				data = dataUser.get( elem, key );
				if ( data !== undefined ) {
					return data;
				}

				// Attempt to "discover" the data in
				// HTML5 custom data-* attrs
				data = dataAttr( elem, key );
				if ( data !== undefined ) {
					return data;
				}

				// We tried really hard, but the data doesn't exist.
				return;
			}

			// Set the data...
			this.each( function() {

				// We always store the camelCased key
				dataUser.set( this, key, value );
			} );
		}, null, value, arguments.length > 1, null, true );
	},

	removeData: function( key ) {
		return this.each( function() {
			dataUser.remove( this, key );
		} );
	}
} );


jQuery.extend( {
	queue: function( elem, type, data ) {
		var queue;

		if ( elem ) {
			type = ( type || "fx" ) + "queue";
			queue = dataPriv.get( elem, type );

			// Speed up dequeue by getting out quickly if this is just a lookup
			if ( data ) {
				if ( !queue || Array.isArray( data ) ) {
					queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
				} else {
					queue.push( data );
				}
			}
			return queue || [];
		}
	},

	dequeue: function( elem, type ) {
		type = type || "fx";

		var queue = jQuery.queue( elem, type ),
			startLength = queue.length,
			fn = queue.shift(),
			hooks = jQuery._queueHooks( elem, type ),
			next = function() {
				jQuery.dequeue( elem, type );
			};

		// If the fx queue is dequeued, always remove the progress sentinel
		if ( fn === "inprogress" ) {
			fn = queue.shift();
			startLength--;
		}

		if ( fn ) {

			// Add a progress sentinel to prevent the fx queue from being
			// automatically dequeued
			if ( type === "fx" ) {
				queue.unshift( "inprogress" );
			}

			// Clear up the last queue stop function
			delete hooks.stop;
			fn.call( elem, next, hooks );
		}

		if ( !startLength && hooks ) {
			hooks.empty.fire();
		}
	},

	// Not public - generate a queueHooks object, or return the current one
	_queueHooks: function( elem, type ) {
		var key = type + "queueHooks";
		return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
			empty: jQuery.Callbacks( "once memory" ).add( function() {
				dataPriv.remove( elem, [ type + "queue", key ] );
			} )
		} );
	}
} );

jQuery.fn.extend( {
	queue: function( type, data ) {
		var setter = 2;

		if ( typeof type !== "string" ) {
			data = type;
			type = "fx";
			setter--;
		}

		if ( arguments.length < setter ) {
			return jQuery.queue( this[ 0 ], type );
		}

		return data === undefined ?
			this :
			this.each( function() {
				var queue = jQuery.queue( this, type, data );

				// Ensure a hooks for this queue
				jQuery._queueHooks( this, type );

				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
					jQuery.dequeue( this, type );
				}
			} );
	},
	dequeue: function( type ) {
		return this.each( function() {
			jQuery.dequeue( this, type );
		} );
	},
	clearQueue: function( type ) {
		return this.queue( type || "fx", [] );
	},

	// Get a promise resolved when queues of a certain type
	// are emptied (fx is the type by default)
	promise: function( type, obj ) {
		var tmp,
			count = 1,
			defer = jQuery.Deferred(),
			elements = this,
			i = this.length,
			resolve = function() {
				if ( !( --count ) ) {
					defer.resolveWith( elements, [ elements ] );
				}
			};

		if ( typeof type !== "string" ) {
			obj = type;
			type = undefined;
		}
		type = type || "fx";

		while ( i-- ) {
			tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
			if ( tmp && tmp.empty ) {
				count++;
				tmp.empty.add( resolve );
			}
		}
		resolve();
		return defer.promise( obj );
	}
} );
var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;

var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );


var cssExpand = [ "Top", "Right", "Bottom", "Left" ];

var isHiddenWithinTree = function( elem, el ) {

		// isHiddenWithinTree might be called from jQuery#filter function;
		// in that case, element will be second argument
		elem = el || elem;

		// Inline style trumps all
		return elem.style.display === "none" ||
			elem.style.display === "" &&

			// Otherwise, check computed style
			// Support: Firefox <=43 - 45
			// Disconnected elements can have computed display: none, so first confirm that elem is
			// in the document.
			jQuery.contains( elem.ownerDocument, elem ) &&

			jQuery.css( elem, "display" ) === "none";
	};

var swap = function( elem, options, callback, args ) {
	var ret, name,
		old = {};

	// Remember the old values, and insert the new ones
	for ( name in options ) {
		old[ name ] = elem.style[ name ];
		elem.style[ name ] = options[ name ];
	}

	ret = callback.apply( elem, args || [] );

	// Revert the old values
	for ( name in options ) {
		elem.style[ name ] = old[ name ];
	}

	return ret;
};




function adjustCSS( elem, prop, valueParts, tween ) {
	var adjusted, scale,
		maxIterations = 20,
		currentValue = tween ?
			function() {
				return tween.cur();
			} :
			function() {
				return jQuery.css( elem, prop, "" );
			},
		initial = currentValue(),
		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),

		// Starting value computation is required for potential unit mismatches
		initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
			rcssNum.exec( jQuery.css( elem, prop ) );

	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {

		// Support: Firefox <=54
		// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)
		initial = initial / 2;

		// Trust units reported by jQuery.css
		unit = unit || initialInUnit[ 3 ];

		// Iteratively approximate from a nonzero starting point
		initialInUnit = +initial || 1;

		while ( maxIterations-- ) {

			// Evaluate and update our best guess (doubling guesses that zero out).
			// Finish if the scale equals or crosses 1 (making the old*new product non-positive).
			jQuery.style( elem, prop, initialInUnit + unit );
			if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {
				maxIterations = 0;
			}
			initialInUnit = initialInUnit / scale;

		}

		initialInUnit = initialInUnit * 2;
		jQuery.style( elem, prop, initialInUnit + unit );

		// Make sure we update the tween properties later on
		valueParts = valueParts || [];
	}

	if ( valueParts ) {
		initialInUnit = +initialInUnit || +initial || 0;

		// Apply relative offset (+=/-=) if specified
		adjusted = valueParts[ 1 ] ?
			initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
			+valueParts[ 2 ];
		if ( tween ) {
			tween.unit = unit;
			tween.start = initialInUnit;
			tween.end = adjusted;
		}
	}
	return adjusted;
}


var defaultDisplayMap = {};

function getDefaultDisplay( elem ) {
	var temp,
		doc = elem.ownerDocument,
		nodeName = elem.nodeName,
		display = defaultDisplayMap[ nodeName ];

	if ( display ) {
		return display;
	}

	temp = doc.body.appendChild( doc.createElement( nodeName ) );
	display = jQuery.css( temp, "display" );

	temp.parentNode.removeChild( temp );

	if ( display === "none" ) {
		display = "block";
	}
	defaultDisplayMap[ nodeName ] = display;

	return display;
}

function showHide( elements, show ) {
	var display, elem,
		values = [],
		index = 0,
		length = elements.length;

	// Determine new display value for elements that need to change
	for ( ; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}

		display = elem.style.display;
		if ( show ) {

			// Since we force visibility upon cascade-hidden elements, an immediate (and slow)
			// check is required in this first loop unless we have a nonempty display value (either
			// inline or about-to-be-restored)
			if ( display === "none" ) {
				values[ index ] = dataPriv.get( elem, "display" ) || null;
				if ( !values[ index ] ) {
					elem.style.display = "";
				}
			}
			if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
				values[ index ] = getDefaultDisplay( elem );
			}
		} else {
			if ( display !== "none" ) {
				values[ index ] = "none";

				// Remember what we're overwriting
				dataPriv.set( elem, "display", display );
			}
		}
	}

	// Set the display of the elements in a second loop to avoid constant reflow
	for ( index = 0; index < length; index++ ) {
		if ( values[ index ] != null ) {
			elements[ index ].style.display = values[ index ];
		}
	}

	return elements;
}

jQuery.fn.extend( {
	show: function() {
		return showHide( this, true );
	},
	hide: function() {
		return showHide( this );
	},
	toggle: function( state ) {
		if ( typeof state === "boolean" ) {
			return state ? this.show() : this.hide();
		}

		return this.each( function() {
			if ( isHiddenWithinTree( this ) ) {
				jQuery( this ).show();
			} else {
				jQuery( this ).hide();
			}
		} );
	}
} );
var rcheckableType = ( /^(?:checkbox|radio)$/i );

var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );

var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i );



// We have to close these tags to support XHTML (#13200)
var wrapMap = {

	// Support: IE <=9 only
	option: [ 1, "<select multiple='multiple'>", "</select>" ],

	// XHTML parsers do not magically insert elements in the
	// same way that tag soup parsers do. So we cannot shorten
	// this by omitting <tbody> or other required elements.
	thead: [ 1, "<table>", "</table>" ],
	col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],

	_default: [ 0, "", "" ]
};

// Support: IE <=9 only
wrapMap.optgroup = wrapMap.option;

wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;


function getAll( context, tag ) {

	// Support: IE <=9 - 11 only
	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
	var ret;

	if ( typeof context.getElementsByTagName !== "undefined" ) {
		ret = context.getElementsByTagName( tag || "*" );

	} else if ( typeof context.querySelectorAll !== "undefined" ) {
		ret = context.querySelectorAll( tag || "*" );

	} else {
		ret = [];
	}

	if ( tag === undefined || tag && nodeName( context, tag ) ) {
		return jQuery.merge( [ context ], ret );
	}

	return ret;
}


// Mark scripts as having already been evaluated
function setGlobalEval( elems, refElements ) {
	var i = 0,
		l = elems.length;

	for ( ; i < l; i++ ) {
		dataPriv.set(
			elems[ i ],
			"globalEval",
			!refElements || dataPriv.get( refElements[ i ], "globalEval" )
		);
	}
}


var rhtml = /<|&#?\w+;/;

function buildFragment( elems, context, scripts, selection, ignored ) {
	var elem, tmp, tag, wrap, contains, j,
		fragment = context.createDocumentFragment(),
		nodes = [],
		i = 0,
		l = elems.length;

	for ( ; i < l; i++ ) {
		elem = elems[ i ];

		if ( elem || elem === 0 ) {

			// Add nodes directly
			if ( toType( elem ) === "object" ) {

				// Support: Android <=4.0 only, PhantomJS 1 only
				// push.apply(_, arraylike) throws on ancient WebKit
				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );

			// Convert non-html into a text node
			} else if ( !rhtml.test( elem ) ) {
				nodes.push( context.createTextNode( elem ) );

			// Convert html into DOM nodes
			} else {
				tmp = tmp || fragment.appendChild( context.createElement( "div" ) );

				// Deserialize a standard representation
				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
				wrap = wrapMap[ tag ] || wrapMap._default;
				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];

				// Descend through wrappers to the right content
				j = wrap[ 0 ];
				while ( j-- ) {
					tmp = tmp.lastChild;
				}

				// Support: Android <=4.0 only, PhantomJS 1 only
				// push.apply(_, arraylike) throws on ancient WebKit
				jQuery.merge( nodes, tmp.childNodes );

				// Remember the top-level container
				tmp = fragment.firstChild;

				// Ensure the created nodes are orphaned (#12392)
				tmp.textContent = "";
			}
		}
	}

	// Remove wrapper from fragment
	fragment.textContent = "";

	i = 0;
	while ( ( elem = nodes[ i++ ] ) ) {

		// Skip elements already in the context collection (trac-4087)
		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
			if ( ignored ) {
				ignored.push( elem );
			}
			continue;
		}

		contains = jQuery.contains( elem.ownerDocument, elem );

		// Append to fragment
		tmp = getAll( fragment.appendChild( elem ), "script" );

		// Preserve script evaluation history
		if ( contains ) {
			setGlobalEval( tmp );
		}

		// Capture executables
		if ( scripts ) {
			j = 0;
			while ( ( elem = tmp[ j++ ] ) ) {
				if ( rscriptType.test( elem.type || "" ) ) {
					scripts.push( elem );
				}
			}
		}
	}

	return fragment;
}


( function() {
	var fragment = document.createDocumentFragment(),
		div = fragment.appendChild( document.createElement( "div" ) ),
		input = document.createElement( "input" );

	// Support: Android 4.0 - 4.3 only
	// Check state lost if the name is set (#11217)
	// Support: Windows Web Apps (WWA)
	// `name` and `type` must use .setAttribute for WWA (#14901)
	input.setAttribute( "type", "radio" );
	input.setAttribute( "checked", "checked" );
	input.setAttribute( "name", "t" );

	div.appendChild( input );

	// Support: Android <=4.1 only
	// Older WebKit doesn't clone checked state correctly in fragments
	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;

	// Support: IE <=11 only
	// Make sure textarea (and checkbox) defaultValue is properly cloned
	div.innerHTML = "<textarea>x</textarea>";
	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
} )();
var documentElement = document.documentElement;



var
	rkeyEvent = /^key/,
	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;

function returnTrue() {
	return true;
}

function returnFalse() {
	return false;
}

// Support: IE <=9 only
// See #13393 for more info
function safeActiveElement() {
	try {
		return document.activeElement;
	} catch ( err ) { }
}

function on( elem, types, selector, data, fn, one ) {
	var origFn, type;

	// Types can be a map of types/handlers
	if ( typeof types === "object" ) {

		// ( types-Object, selector, data )
		if ( typeof selector !== "string" ) {

			// ( types-Object, data )
			data = data || selector;
			selector = undefined;
		}
		for ( type in types ) {
			on( elem, type, selector, data, types[ type ], one );
		}
		return elem;
	}

	if ( data == null && fn == null ) {

		// ( types, fn )
		fn = selector;
		data = selector = undefined;
	} else if ( fn == null ) {
		if ( typeof selector === "string" ) {

			// ( types, selector, fn )
			fn = data;
			data = undefined;
		} else {

			// ( types, data, fn )
			fn = data;
			data = selector;
			selector = undefined;
		}
	}
	if ( fn === false ) {
		fn = returnFalse;
	} else if ( !fn ) {
		return elem;
	}

	if ( one === 1 ) {
		origFn = fn;
		fn = function( event ) {

			// Can use an empty set, since event contains the info
			jQuery().off( event );
			return origFn.apply( this, arguments );
		};

		// Use same guid so caller can remove using origFn
		fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
	}
	return elem.each( function() {
		jQuery.event.add( this, types, fn, data, selector );
	} );
}

/*
 * Helper functions for managing events -- not part of the public interface.
 * Props to Dean Edwards' addEvent library for many of the ideas.
 */
jQuery.event = {

	global: {},

	add: function( elem, types, handler, data, selector ) {

		var handleObjIn, eventHandle, tmp,
			events, t, handleObj,
			special, handlers, type, namespaces, origType,
			elemData = dataPriv.get( elem );

		// Don't attach events to noData or text/comment nodes (but allow plain objects)
		if ( !elemData ) {
			return;
		}

		// Caller can pass in an object of custom data in lieu of the handler
		if ( handler.handler ) {
			handleObjIn = handler;
			handler = handleObjIn.handler;
			selector = handleObjIn.selector;
		}

		// Ensure that invalid selectors throw exceptions at attach time
		// Evaluate against documentElement in case elem is a non-element node (e.g., document)
		if ( selector ) {
			jQuery.find.matchesSelector( documentElement, selector );
		}

		// Make sure that the handler has a unique ID, used to find/remove it later
		if ( !handler.guid ) {
			handler.guid = jQuery.guid++;
		}

		// Init the element's event structure and main handler, if this is the first
		if ( !( events = elemData.events ) ) {
			events = elemData.events = {};
		}
		if ( !( eventHandle = elemData.handle ) ) {
			eventHandle = elemData.handle = function( e ) {

				// Discard the second event of a jQuery.event.trigger() and
				// when an event is called after a page has unloaded
				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
					jQuery.event.dispatch.apply( elem, arguments ) : undefined;
			};
		}

		// Handle multiple events separated by a space
		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// There *must* be a type, no attaching namespace-only handlers
			if ( !type ) {
				continue;
			}

			// If event changes its type, use the special event handlers for the changed type
			special = jQuery.event.special[ type ] || {};

			// If selector defined, determine special event api type, otherwise given type
			type = ( selector ? special.delegateType : special.bindType ) || type;

			// Update special based on newly reset type
			special = jQuery.event.special[ type ] || {};

			// handleObj is passed to all event handlers
			handleObj = jQuery.extend( {
				type: type,
				origType: origType,
				data: data,
				handler: handler,
				guid: handler.guid,
				selector: selector,
				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
				namespace: namespaces.join( "." )
			}, handleObjIn );

			// Init the event handler queue if we're the first
			if ( !( handlers = events[ type ] ) ) {
				handlers = events[ type ] = [];
				handlers.delegateCount = 0;

				// Only use addEventListener if the special events handler returns false
				if ( !special.setup ||
					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {

					if ( elem.addEventListener ) {
						elem.addEventListener( type, eventHandle );
					}
				}
			}

			if ( special.add ) {
				special.add.call( elem, handleObj );

				if ( !handleObj.handler.guid ) {
					handleObj.handler.guid = handler.guid;
				}
			}

			// Add to the element's handler list, delegates in front
			if ( selector ) {
				handlers.splice( handlers.delegateCount++, 0, handleObj );
			} else {
				handlers.push( handleObj );
			}

			// Keep track of which events have ever been used, for event optimization
			jQuery.event.global[ type ] = true;
		}

	},

	// Detach an event or set of events from an element
	remove: function( elem, types, handler, selector, mappedTypes ) {

		var j, origCount, tmp,
			events, t, handleObj,
			special, handlers, type, namespaces, origType,
			elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );

		if ( !elemData || !( events = elemData.events ) ) {
			return;
		}

		// Once for each type.namespace in types; type may be omitted
		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// Unbind all events (on this namespace, if provided) for the element
			if ( !type ) {
				for ( type in events ) {
					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
				}
				continue;
			}

			special = jQuery.event.special[ type ] || {};
			type = ( selector ? special.delegateType : special.bindType ) || type;
			handlers = events[ type ] || [];
			tmp = tmp[ 2 ] &&
				new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );

			// Remove matching events
			origCount = j = handlers.length;
			while ( j-- ) {
				handleObj = handlers[ j ];

				if ( ( mappedTypes || origType === handleObj.origType ) &&
					( !handler || handler.guid === handleObj.guid ) &&
					( !tmp || tmp.test( handleObj.namespace ) ) &&
					( !selector || selector === handleObj.selector ||
						selector === "**" && handleObj.selector ) ) {
					handlers.splice( j, 1 );

					if ( handleObj.selector ) {
						handlers.delegateCount--;
					}
					if ( special.remove ) {
						special.remove.call( elem, handleObj );
					}
				}
			}

			// Remove generic event handler if we removed something and no more handlers exist
			// (avoids potential for endless recursion during removal of special event handlers)
			if ( origCount && !handlers.length ) {
				if ( !special.teardown ||
					special.teardown.call( elem, namespaces, elemData.handle ) === false ) {

					jQuery.removeEvent( elem, type, elemData.handle );
				}

				delete events[ type ];
			}
		}

		// Remove data and the expando if it's no longer used
		if ( jQuery.isEmptyObject( events ) ) {
			dataPriv.remove( elem, "handle events" );
		}
	},

	dispatch: function( nativeEvent ) {

		// Make a writable jQuery.Event from the native event object
		var event = jQuery.event.fix( nativeEvent );

		var i, j, ret, matched, handleObj, handlerQueue,
			args = new Array( arguments.length ),
			handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [],
			special = jQuery.event.special[ event.type ] || {};

		// Use the fix-ed jQuery.Event rather than the (read-only) native event
		args[ 0 ] = event;

		for ( i = 1; i < arguments.length; i++ ) {
			args[ i ] = arguments[ i ];
		}

		event.delegateTarget = this;

		// Call the preDispatch hook for the mapped type, and let it bail if desired
		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
			return;
		}

		// Determine handlers
		handlerQueue = jQuery.event.handlers.call( this, event, handlers );

		// Run delegates first; they may want to stop propagation beneath us
		i = 0;
		while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
			event.currentTarget = matched.elem;

			j = 0;
			while ( ( handleObj = matched.handlers[ j++ ] ) &&
				!event.isImmediatePropagationStopped() ) {

				// Triggered event must either 1) have no namespace, or 2) have namespace(s)
				// a subset or equal to those in the bound event (both can have no namespace).
				if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {

					event.handleObj = handleObj;
					event.data = handleObj.data;

					ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
						handleObj.handler ).apply( matched.elem, args );

					if ( ret !== undefined ) {
						if ( ( event.result = ret ) === false ) {
							event.preventDefault();
							event.stopPropagation();
						}
					}
				}
			}
		}

		// Call the postDispatch hook for the mapped type
		if ( special.postDispatch ) {
			special.postDispatch.call( this, event );
		}

		return event.result;
	},

	handlers: function( event, handlers ) {
		var i, handleObj, sel, matchedHandlers, matchedSelectors,
			handlerQueue = [],
			delegateCount = handlers.delegateCount,
			cur = event.target;

		// Find delegate handlers
		if ( delegateCount &&

			// Support: IE <=9
			// Black-hole SVG <use> instance trees (trac-13180)
			cur.nodeType &&

			// Support: Firefox <=42
			// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
			// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
			// Support: IE 11 only
			// ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
			!( event.type === "click" && event.button >= 1 ) ) {

			for ( ; cur !== this; cur = cur.parentNode || this ) {

				// Don't check non-elements (#13208)
				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
				if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
					matchedHandlers = [];
					matchedSelectors = {};
					for ( i = 0; i < delegateCount; i++ ) {
						handleObj = handlers[ i ];

						// Don't conflict with Object.prototype properties (#13203)
						sel = handleObj.selector + " ";

						if ( matchedSelectors[ sel ] === undefined ) {
							matchedSelectors[ sel ] = handleObj.needsContext ?
								jQuery( sel, this ).index( cur ) > -1 :
								jQuery.find( sel, this, null, [ cur ] ).length;
						}
						if ( matchedSelectors[ sel ] ) {
							matchedHandlers.push( handleObj );
						}
					}
					if ( matchedHandlers.length ) {
						handlerQueue.push( { elem: cur, handlers: matchedHandlers } );
					}
				}
			}
		}

		// Add the remaining (directly-bound) handlers
		cur = this;
		if ( delegateCount < handlers.length ) {
			handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );
		}

		return handlerQueue;
	},

	addProp: function( name, hook ) {
		Object.defineProperty( jQuery.Event.prototype, name, {
			enumerable: true,
			configurable: true,

			get: isFunction( hook ) ?
				function() {
					if ( this.originalEvent ) {
							return hook( this.originalEvent );
					}
				} :
				function() {
					if ( this.originalEvent ) {
							return this.originalEvent[ name ];
					}
				},

			set: function( value ) {
				Object.defineProperty( this, name, {
					enumerable: true,
					configurable: true,
					writable: true,
					value: value
				} );
			}
		} );
	},

	fix: function( originalEvent ) {
		return originalEvent[ jQuery.expando ] ?
			originalEvent :
			new jQuery.Event( originalEvent );
	},

	special: {
		load: {

			// Prevent triggered image.load events from bubbling to window.load
			noBubble: true
		},
		focus: {

			// Fire native event if possible so blur/focus sequence is correct
			trigger: function() {
				if ( this !== safeActiveElement() && this.focus ) {
					this.focus();
					return false;
				}
			},
			delegateType: "focusin"
		},
		blur: {
			trigger: function() {
				if ( this === safeActiveElement() && this.blur ) {
					this.blur();
					return false;
				}
			},
			delegateType: "focusout"
		},
		click: {

			// For checkbox, fire native event so checked state will be right
			trigger: function() {
				if ( this.type === "checkbox" && this.click && nodeName( this, "input" ) ) {
					this.click();
					return false;
				}
			},

			// For cross-browser consistency, don't fire native .click() on links
			_default: function( event ) {
				return nodeName( event.target, "a" );
			}
		},

		beforeunload: {
			postDispatch: function( event ) {

				// Support: Firefox 20+
				// Firefox doesn't alert if the returnValue field is not set.
				if ( event.result !== undefined && event.originalEvent ) {
					event.originalEvent.returnValue = event.result;
				}
			}
		}
	}
};

jQuery.removeEvent = function( elem, type, handle ) {

	// This "if" is needed for plain objects
	if ( elem.removeEventListener ) {
		elem.removeEventListener( type, handle );
	}
};

jQuery.Event = function( src, props ) {

	// Allow instantiation without the 'new' keyword
	if ( !( this instanceof jQuery.Event ) ) {
		return new jQuery.Event( src, props );
	}

	// Event object
	if ( src && src.type ) {
		this.originalEvent = src;
		this.type = src.type;

		// Events bubbling up the document may have been marked as prevented
		// by a handler lower down the tree; reflect the correct value.
		this.isDefaultPrevented = src.defaultPrevented ||
				src.defaultPrevented === undefined &&

				// Support: Android <=2.3 only
				src.returnValue === false ?
			returnTrue :
			returnFalse;

		// Create target properties
		// Support: Safari <=6 - 7 only
		// Target should not be a text node (#504, #13143)
		this.target = ( src.target && src.target.nodeType === 3 ) ?
			src.target.parentNode :
			src.target;

		this.currentTarget = src.currentTarget;
		this.relatedTarget = src.relatedTarget;

	// Event type
	} else {
		this.type = src;
	}

	// Put explicitly provided properties onto the event object
	if ( props ) {
		jQuery.extend( this, props );
	}

	// Create a timestamp if incoming event doesn't have one
	this.timeStamp = src && src.timeStamp || Date.now();

	// Mark it as fixed
	this[ jQuery.expando ] = true;
};

// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
	constructor: jQuery.Event,
	isDefaultPrevented: returnFalse,
	isPropagationStopped: returnFalse,
	isImmediatePropagationStopped: returnFalse,
	isSimulated: false,

	preventDefault: function() {
		var e = this.originalEvent;

		this.isDefaultPrevented = returnTrue;

		if ( e && !this.isSimulated ) {
			e.preventDefault();
		}
	},
	stopPropagation: function() {
		var e = this.originalEvent;

		this.isPropagationStopped = returnTrue;

		if ( e && !this.isSimulated ) {
			e.stopPropagation();
		}
	},
	stopImmediatePropagation: function() {
		var e = this.originalEvent;

		this.isImmediatePropagationStopped = returnTrue;

		if ( e && !this.isSimulated ) {
			e.stopImmediatePropagation();
		}

		this.stopPropagation();
	}
};

// Includes all common event props including KeyEvent and MouseEvent specific props
jQuery.each( {
	altKey: true,
	bubbles: true,
	cancelable: true,
	changedTouches: true,
	ctrlKey: true,
	detail: true,
	eventPhase: true,
	metaKey: true,
	pageX: true,
	pageY: true,
	shiftKey: true,
	view: true,
	"char": true,
	charCode: true,
	key: true,
	keyCode: true,
	button: true,
	buttons: true,
	clientX: true,
	clientY: true,
	offsetX: true,
	offsetY: true,
	pointerId: true,
	pointerType: true,
	screenX: true,
	screenY: true,
	targetTouches: true,
	toElement: true,
	touches: true,

	which: function( event ) {
		var button = event.button;

		// Add which for key events
		if ( event.which == null && rkeyEvent.test( event.type ) ) {
			return event.charCode != null ? event.charCode : event.keyCode;
		}

		// Add which for click: 1 === left; 2 === middle; 3 === right
		if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) {
			if ( button & 1 ) {
				return 1;
			}

			if ( button & 2 ) {
				return 3;
			}

			if ( button & 4 ) {
				return 2;
			}

			return 0;
		}

		return event.which;
	}
}, jQuery.event.addProp );

// Create mouseenter/leave events using mouseover/out and event-time checks
// so that event delegation works in jQuery.
// Do the same for pointerenter/pointerleave and pointerover/pointerout
//
// Support: Safari 7 only
// Safari sends mouseenter too often; see:
// https://bugs.chromium.org/p/chromium/issues/detail?id=470258
// for the description of the bug (it existed in older Chrome versions as well).
jQuery.each( {
	mouseenter: "mouseover",
	mouseleave: "mouseout",
	pointerenter: "pointerover",
	pointerleave: "pointerout"
}, function( orig, fix ) {
	jQuery.event.special[ orig ] = {
		delegateType: fix,
		bindType: fix,

		handle: function( event ) {
			var ret,
				target = this,
				related = event.relatedTarget,
				handleObj = event.handleObj;

			// For mouseenter/leave call the handler if related is outside the target.
			// NB: No relatedTarget if the mouse left/entered the browser window
			if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
				event.type = handleObj.origType;
				ret = handleObj.handler.apply( this, arguments );
				event.type = fix;
			}
			return ret;
		}
	};
} );

jQuery.fn.extend( {

	on: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn );
	},
	one: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn, 1 );
	},
	off: function( types, selector, fn ) {
		var handleObj, type;
		if ( types && types.preventDefault && types.handleObj ) {

			// ( event )  dispatched jQuery.Event
			handleObj = types.handleObj;
			jQuery( types.delegateTarget ).off(
				handleObj.namespace ?
					handleObj.origType + "." + handleObj.namespace :
					handleObj.origType,
				handleObj.selector,
				handleObj.handler
			);
			return this;
		}
		if ( typeof types === "object" ) {

			// ( types-object [, selector] )
			for ( type in types ) {
				this.off( type, selector, types[ type ] );
			}
			return this;
		}
		if ( selector === false || typeof selector === "function" ) {

			// ( types [, fn] )
			fn = selector;
			selector = undefined;
		}
		if ( fn === false ) {
			fn = returnFalse;
		}
		return this.each( function() {
			jQuery.event.remove( this, types, fn, selector );
		} );
	}
} );


var

	/* eslint-disable max-len */

	// See https://github.com/eslint/eslint/issues/3229
	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,

	/* eslint-enable */

	// Support: IE <=10 - 11, Edge 12 - 13 only
	// In IE/Edge using regex groups here causes severe slowdowns.
	// See https://connect.microsoft.com/IE/feedback/details/1736512/
	rnoInnerhtml = /<script|<style|<link/i,

	// checked="checked" or checked
	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;

// Prefer a tbody over its parent table for containing new rows
function manipulationTarget( elem, content ) {
	if ( nodeName( elem, "table" ) &&
		nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {

		return jQuery( elem ).children( "tbody" )[ 0 ] || elem;
	}

	return elem;
}

// Replace/restore the type attribute of script elements for safe DOM manipulation
function disableScript( elem ) {
	elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
	return elem;
}
function restoreScript( elem ) {
	if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) {
		elem.type = elem.type.slice( 5 );
	} else {
		elem.removeAttribute( "type" );
	}

	return elem;
}

function cloneCopyEvent( src, dest ) {
	var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;

	if ( dest.nodeType !== 1 ) {
		return;
	}

	// 1. Copy private data: events, handlers, etc.
	if ( dataPriv.hasData( src ) ) {
		pdataOld = dataPriv.access( src );
		pdataCur = dataPriv.set( dest, pdataOld );
		events = pdataOld.events;

		if ( events ) {
			delete pdataCur.handle;
			pdataCur.events = {};

			for ( type in events ) {
				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
					jQuery.event.add( dest, type, events[ type ][ i ] );
				}
			}
		}
	}

	// 2. Copy user data
	if ( dataUser.hasData( src ) ) {
		udataOld = dataUser.access( src );
		udataCur = jQuery.extend( {}, udataOld );

		dataUser.set( dest, udataCur );
	}
}

// Fix IE bugs, see support tests
function fixInput( src, dest ) {
	var nodeName = dest.nodeName.toLowerCase();

	// Fails to persist the checked state of a cloned checkbox or radio button.
	if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
		dest.checked = src.checked;

	// Fails to return the selected option to the default selected state when cloning options
	} else if ( nodeName === "input" || nodeName === "textarea" ) {
		dest.defaultValue = src.defaultValue;
	}
}

function domManip( collection, args, callback, ignored ) {

	// Flatten any nested arrays
	args = concat.apply( [], args );

	var fragment, first, scripts, hasScripts, node, doc,
		i = 0,
		l = collection.length,
		iNoClone = l - 1,
		value = args[ 0 ],
		valueIsFunction = isFunction( value );

	// We can't cloneNode fragments that contain checked, in WebKit
	if ( valueIsFunction ||
			( l > 1 && typeof value === "string" &&
				!support.checkClone && rchecked.test( value ) ) ) {
		return collection.each( function( index ) {
			var self = collection.eq( index );
			if ( valueIsFunction ) {
				args[ 0 ] = value.call( this, index, self.html() );
			}
			domManip( self, args, callback, ignored );
		} );
	}

	if ( l ) {
		fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
		first = fragment.firstChild;

		if ( fragment.childNodes.length === 1 ) {
			fragment = first;
		}

		// Require either new content or an interest in ignored elements to invoke the callback
		if ( first || ignored ) {
			scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
			hasScripts = scripts.length;

			// Use the original fragment for the last item
			// instead of the first because it can end up
			// being emptied incorrectly in certain situations (#8070).
			for ( ; i < l; i++ ) {
				node = fragment;

				if ( i !== iNoClone ) {
					node = jQuery.clone( node, true, true );

					// Keep references to cloned scripts for later restoration
					if ( hasScripts ) {

						// Support: Android <=4.0 only, PhantomJS 1 only
						// push.apply(_, arraylike) throws on ancient WebKit
						jQuery.merge( scripts, getAll( node, "script" ) );
					}
				}

				callback.call( collection[ i ], node, i );
			}

			if ( hasScripts ) {
				doc = scripts[ scripts.length - 1 ].ownerDocument;

				// Reenable scripts
				jQuery.map( scripts, restoreScript );

				// Evaluate executable scripts on first document insertion
				for ( i = 0; i < hasScripts; i++ ) {
					node = scripts[ i ];
					if ( rscriptType.test( node.type || "" ) &&
						!dataPriv.access( node, "globalEval" ) &&
						jQuery.contains( doc, node ) ) {

						if ( node.src && ( node.type || "" ).toLowerCase()  !== "module" ) {

							// Optional AJAX dependency, but won't run scripts if not present
							if ( jQuery._evalUrl ) {
								jQuery._evalUrl( node.src );
							}
						} else {
							DOMEval( node.textContent.replace( rcleanScript, "" ), doc, node );
						}
					}
				}
			}
		}
	}

	return collection;
}

function remove( elem, selector, keepData ) {
	var node,
		nodes = selector ? jQuery.filter( selector, elem ) : elem,
		i = 0;

	for ( ; ( node = nodes[ i ] ) != null; i++ ) {
		if ( !keepData && node.nodeType === 1 ) {
			jQuery.cleanData( getAll( node ) );
		}

		if ( node.parentNode ) {
			if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
				setGlobalEval( getAll( node, "script" ) );
			}
			node.parentNode.removeChild( node );
		}
	}

	return elem;
}

jQuery.extend( {
	htmlPrefilter: function( html ) {
		return html.replace( rxhtmlTag, "<$1></$2>" );
	},

	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
		var i, l, srcElements, destElements,
			clone = elem.cloneNode( true ),
			inPage = jQuery.contains( elem.ownerDocument, elem );

		// Fix IE cloning issues
		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
				!jQuery.isXMLDoc( elem ) ) {

			// We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
			destElements = getAll( clone );
			srcElements = getAll( elem );

			for ( i = 0, l = srcElements.length; i < l; i++ ) {
				fixInput( srcElements[ i ], destElements[ i ] );
			}
		}

		// Copy the events from the original to the clone
		if ( dataAndEvents ) {
			if ( deepDataAndEvents ) {
				srcElements = srcElements || getAll( elem );
				destElements = destElements || getAll( clone );

				for ( i = 0, l = srcElements.length; i < l; i++ ) {
					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
				}
			} else {
				cloneCopyEvent( elem, clone );
			}
		}

		// Preserve script evaluation history
		destElements = getAll( clone, "script" );
		if ( destElements.length > 0 ) {
			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
		}

		// Return the cloned set
		return clone;
	},

	cleanData: function( elems ) {
		var data, elem, type,
			special = jQuery.event.special,
			i = 0;

		for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
			if ( acceptData( elem ) ) {
				if ( ( data = elem[ dataPriv.expando ] ) ) {
					if ( data.events ) {
						for ( type in data.events ) {
							if ( special[ type ] ) {
								jQuery.event.remove( elem, type );

							// This is a shortcut to avoid jQuery.event.remove's overhead
							} else {
								jQuery.removeEvent( elem, type, data.handle );
							}
						}
					}

					// Support: Chrome <=35 - 45+
					// Assign undefined instead of using delete, see Data#remove
					elem[ dataPriv.expando ] = undefined;
				}
				if ( elem[ dataUser.expando ] ) {

					// Support: Chrome <=35 - 45+
					// Assign undefined instead of using delete, see Data#remove
					elem[ dataUser.expando ] = undefined;
				}
			}
		}
	}
} );

jQuery.fn.extend( {
	detach: function( selector ) {
		return remove( this, selector, true );
	},

	remove: function( selector ) {
		return remove( this, selector );
	},

	text: function( value ) {
		return access( this, function( value ) {
			return value === undefined ?
				jQuery.text( this ) :
				this.empty().each( function() {
					if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
						this.textContent = value;
					}
				} );
		}, null, value, arguments.length );
	},

	append: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.appendChild( elem );
			}
		} );
	},

	prepend: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.insertBefore( elem, target.firstChild );
			}
		} );
	},

	before: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this );
			}
		} );
	},

	after: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this.nextSibling );
			}
		} );
	},

	empty: function() {
		var elem,
			i = 0;

		for ( ; ( elem = this[ i ] ) != null; i++ ) {
			if ( elem.nodeType === 1 ) {

				// Prevent memory leaks
				jQuery.cleanData( getAll( elem, false ) );

				// Remove any remaining nodes
				elem.textContent = "";
			}
		}

		return this;
	},

	clone: function( dataAndEvents, deepDataAndEvents ) {
		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;

		return this.map( function() {
			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
		} );
	},

	html: function( value ) {
		return access( this, function( value ) {
			var elem = this[ 0 ] || {},
				i = 0,
				l = this.length;

			if ( value === undefined && elem.nodeType === 1 ) {
				return elem.innerHTML;
			}

			// See if we can take a shortcut and just use innerHTML
			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {

				value = jQuery.htmlPrefilter( value );

				try {
					for ( ; i < l; i++ ) {
						elem = this[ i ] || {};

						// Remove element nodes and prevent memory leaks
						if ( elem.nodeType === 1 ) {
							jQuery.cleanData( getAll( elem, false ) );
							elem.innerHTML = value;
						}
					}

					elem = 0;

				// If using innerHTML throws an exception, use the fallback method
				} catch ( e ) {}
			}

			if ( elem ) {
				this.empty().append( value );
			}
		}, null, value, arguments.length );
	},

	replaceWith: function() {
		var ignored = [];

		// Make the changes, replacing each non-ignored context element with the new content
		return domManip( this, arguments, function( elem ) {
			var parent = this.parentNode;

			if ( jQuery.inArray( this, ignored ) < 0 ) {
				jQuery.cleanData( getAll( this ) );
				if ( parent ) {
					parent.replaceChild( elem, this );
				}
			}

		// Force callback invocation
		}, ignored );
	}
} );

jQuery.each( {
	appendTo: "append",
	prependTo: "prepend",
	insertBefore: "before",
	insertAfter: "after",
	replaceAll: "replaceWith"
}, function( name, original ) {
	jQuery.fn[ name ] = function( selector ) {
		var elems,
			ret = [],
			insert = jQuery( selector ),
			last = insert.length - 1,
			i = 0;

		for ( ; i <= last; i++ ) {
			elems = i === last ? this : this.clone( true );
			jQuery( insert[ i ] )[ original ]( elems );

			// Support: Android <=4.0 only, PhantomJS 1 only
			// .get() because push.apply(_, arraylike) throws on ancient WebKit
			push.apply( ret, elems.get() );
		}

		return this.pushStack( ret );
	};
} );
var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );

var getStyles = function( elem ) {

		// Support: IE <=11 only, Firefox <=30 (#15098, #14150)
		// IE throws on elements created in popups
		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
		var view = elem.ownerDocument.defaultView;

		if ( !view || !view.opener ) {
			view = window;
		}

		return view.getComputedStyle( elem );
	};

var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" );



( function() {

	// Executing both pixelPosition & boxSizingReliable tests require only one layout
	// so they're executed at the same time to save the second computation.
	function computeStyleTests() {

		// This is a singleton, we need to execute it only once
		if ( !div ) {
			return;
		}

		container.style.cssText = "position:absolute;left:-11111px;width:60px;" +
			"margin-top:1px;padding:0;border:0";
		div.style.cssText =
			"position:relative;display:block;box-sizing:border-box;overflow:scroll;" +
			"margin:auto;border:1px;padding:1px;" +
			"width:60%;top:1%";
		documentElement.appendChild( container ).appendChild( div );

		var divStyle = window.getComputedStyle( div );
		pixelPositionVal = divStyle.top !== "1%";

		// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
		reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;

		// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3
		// Some styles come back with percentage values, even though they shouldn't
		div.style.right = "60%";
		pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;

		// Support: IE 9 - 11 only
		// Detect misreporting of content dimensions for box-sizing:border-box elements
		boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;

		// Support: IE 9 only
		// Detect overflow:scroll screwiness (gh-3699)
		div.style.position = "absolute";
		scrollboxSizeVal = div.offsetWidth === 36 || "absolute";

		documentElement.removeChild( container );

		// Nullify the div so it wouldn't be stored in the memory and
		// it will also be a sign that checks already performed
		div = null;
	}

	function roundPixelMeasures( measure ) {
		return Math.round( parseFloat( measure ) );
	}

	var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,
		reliableMarginLeftVal,
		container = document.createElement( "div" ),
		div = document.createElement( "div" );

	// Finish early in limited (non-browser) environments
	if ( !div.style ) {
		return;
	}

	// Support: IE <=9 - 11 only
	// Style of cloned element affects source element cloned (#8908)
	div.style.backgroundClip = "content-box";
	div.cloneNode( true ).style.backgroundClip = "";
	support.clearCloneStyle = div.style.backgroundClip === "content-box";

	jQuery.extend( support, {
		boxSizingReliable: function() {
			computeStyleTests();
			return boxSizingReliableVal;
		},
		pixelBoxStyles: function() {
			computeStyleTests();
			return pixelBoxStylesVal;
		},
		pixelPosition: function() {
			computeStyleTests();
			return pixelPositionVal;
		},
		reliableMarginLeft: function() {
			computeStyleTests();
			return reliableMarginLeftVal;
		},
		scrollboxSize: function() {
			computeStyleTests();
			return scrollboxSizeVal;
		}
	} );
} )();


function curCSS( elem, name, computed ) {
	var width, minWidth, maxWidth, ret,

		// Support: Firefox 51+
		// Retrieving style before computed somehow
		// fixes an issue with getting wrong values
		// on detached elements
		style = elem.style;

	computed = computed || getStyles( elem );

	// getPropertyValue is needed for:
	//   .css('filter') (IE 9 only, #12537)
	//   .css('--customProperty) (#3144)
	if ( computed ) {
		ret = computed.getPropertyValue( name ) || computed[ name ];

		if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
			ret = jQuery.style( elem, name );
		}

		// A tribute to the "awesome hack by Dean Edwards"
		// Android Browser returns percentage for some values,
		// but width seems to be reliably pixels.
		// This is against the CSSOM draft spec:
		// https://drafts.csswg.org/cssom/#resolved-values
		if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {

			// Remember the original values
			width = style.width;
			minWidth = style.minWidth;
			maxWidth = style.maxWidth;

			// Put in the new values to get a computed value out
			style.minWidth = style.maxWidth = style.width = ret;
			ret = computed.width;

			// Revert the changed values
			style.width = width;
			style.minWidth = minWidth;
			style.maxWidth = maxWidth;
		}
	}

	return ret !== undefined ?

		// Support: IE <=9 - 11 only
		// IE returns zIndex value as an integer.
		ret + "" :
		ret;
}


function addGetHookIf( conditionFn, hookFn ) {

	// Define the hook, we'll check on the first run if it's really needed.
	return {
		get: function() {
			if ( conditionFn() ) {

				// Hook not needed (or it's not possible to use it due
				// to missing dependency), remove it.
				delete this.get;
				return;
			}

			// Hook needed; redefine it so that the support test is not executed again.
			return ( this.get = hookFn ).apply( this, arguments );
		}
	};
}


var

	// Swappable if display is none or starts with table
	// except "table", "table-cell", or "table-caption"
	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
	rcustomProp = /^--/,
	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
	cssNormalTransform = {
		letterSpacing: "0",
		fontWeight: "400"
	},

	cssPrefixes = [ "Webkit", "Moz", "ms" ],
	emptyStyle = document.createElement( "div" ).style;

// Return a css property mapped to a potentially vendor prefixed property
function vendorPropName( name ) {

	// Shortcut for names that are not vendor prefixed
	if ( name in emptyStyle ) {
		return name;
	}

	// Check for vendor prefixed names
	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
		i = cssPrefixes.length;

	while ( i-- ) {
		name = cssPrefixes[ i ] + capName;
		if ( name in emptyStyle ) {
			return name;
		}
	}
}

// Return a property mapped along what jQuery.cssProps suggests or to
// a vendor prefixed property.
function finalPropName( name ) {
	var ret = jQuery.cssProps[ name ];
	if ( !ret ) {
		ret = jQuery.cssProps[ name ] = vendorPropName( name ) || name;
	}
	return ret;
}

function setPositiveNumber( elem, value, subtract ) {

	// Any relative (+/-) values have already been
	// normalized at this point
	var matches = rcssNum.exec( value );
	return matches ?

		// Guard against undefined "subtract", e.g., when used as in cssHooks
		Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
		value;
}

function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {
	var i = dimension === "width" ? 1 : 0,
		extra = 0,
		delta = 0;

	// Adjustment may not be necessary
	if ( box === ( isBorderBox ? "border" : "content" ) ) {
		return 0;
	}

	for ( ; i < 4; i += 2 ) {

		// Both box models exclude margin
		if ( box === "margin" ) {
			delta += jQuery.css( elem, box + cssExpand[ i ], true, styles );
		}

		// If we get here with a content-box, we're seeking "padding" or "border" or "margin"
		if ( !isBorderBox ) {

			// Add padding
			delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );

			// For "border" or "margin", add border
			if ( box !== "padding" ) {
				delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );

			// But still keep track of it otherwise
			} else {
				extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}

		// If we get here with a border-box (content + padding + border), we're seeking "content" or
		// "padding" or "margin"
		} else {

			// For "content", subtract padding
			if ( box === "content" ) {
				delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
			}

			// For "content" or "padding", subtract border
			if ( box !== "margin" ) {
				delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		}
	}

	// Account for positive content-box scroll gutter when requested by providing computedVal
	if ( !isBorderBox && computedVal >= 0 ) {

		// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border
		// Assuming integer scroll gutter, subtract the rest and round down
		delta += Math.max( 0, Math.ceil(
			elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
			computedVal -
			delta -
			extra -
			0.5
		) );
	}

	return delta;
}

function getWidthOrHeight( elem, dimension, extra ) {

	// Start with computed style
	var styles = getStyles( elem ),
		val = curCSS( elem, dimension, styles ),
		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
		valueIsBorderBox = isBorderBox;

	// Support: Firefox <=54
	// Return a confounding non-pixel value or feign ignorance, as appropriate.
	if ( rnumnonpx.test( val ) ) {
		if ( !extra ) {
			return val;
		}
		val = "auto";
	}

	// Check for style in case a browser which returns unreliable values
	// for getComputedStyle silently falls back to the reliable elem.style
	valueIsBorderBox = valueIsBorderBox &&
		( support.boxSizingReliable() || val === elem.style[ dimension ] );

	// Fall back to offsetWidth/offsetHeight when value is "auto"
	// This happens for inline elements with no explicit setting (gh-3571)
	// Support: Android <=4.1 - 4.3 only
	// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)
	if ( val === "auto" ||
		!parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) {

		val = elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ];

		// offsetWidth/offsetHeight provide border-box values
		valueIsBorderBox = true;
	}

	// Normalize "" and auto
	val = parseFloat( val ) || 0;

	// Adjust for the element's box model
	return ( val +
		boxModelAdjustment(
			elem,
			dimension,
			extra || ( isBorderBox ? "border" : "content" ),
			valueIsBorderBox,
			styles,

			// Provide the current computed size to request scroll gutter calculation (gh-3589)
			val
		)
	) + "px";
}

jQuery.extend( {

	// Add in style property hooks for overriding the default
	// behavior of getting and setting a style property
	cssHooks: {
		opacity: {
			get: function( elem, computed ) {
				if ( computed ) {

					// We should always get a number back from opacity
					var ret = curCSS( elem, "opacity" );
					return ret === "" ? "1" : ret;
				}
			}
		}
	},

	// Don't automatically add "px" to these possibly-unitless properties
	cssNumber: {
		"animationIterationCount": true,
		"columnCount": true,
		"fillOpacity": true,
		"flexGrow": true,
		"flexShrink": true,
		"fontWeight": true,
		"lineHeight": true,
		"opacity": true,
		"order": true,
		"orphans": true,
		"widows": true,
		"zIndex": true,
		"zoom": true
	},

	// Add in properties whose names you wish to fix before
	// setting or getting the value
	cssProps: {},

	// Get and set the style property on a DOM Node
	style: function( elem, name, value, extra ) {

		// Don't set styles on text and comment nodes
		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
			return;
		}

		// Make sure that we're working with the right name
		var ret, type, hooks,
			origName = camelCase( name ),
			isCustomProp = rcustomProp.test( name ),
			style = elem.style;

		// Make sure that we're working with the right name. We don't
		// want to query the value if it is a CSS custom property
		// since they are user-defined.
		if ( !isCustomProp ) {
			name = finalPropName( origName );
		}

		// Gets hook for the prefixed version, then unprefixed version
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// Check if we're setting a value
		if ( value !== undefined ) {
			type = typeof value;

			// Convert "+=" or "-=" to relative numbers (#7345)
			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
				value = adjustCSS( elem, name, ret );

				// Fixes bug #9237
				type = "number";
			}

			// Make sure that null and NaN values aren't set (#7116)
			if ( value == null || value !== value ) {
				return;
			}

			// If a number was passed in, add the unit (except for certain CSS properties)
			if ( type === "number" ) {
				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
			}

			// background-* props affect original clone's values
			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
				style[ name ] = "inherit";
			}

			// If a hook was provided, use that value, otherwise just set the specified value
			if ( !hooks || !( "set" in hooks ) ||
				( value = hooks.set( elem, value, extra ) ) !== undefined ) {

				if ( isCustomProp ) {
					style.setProperty( name, value );
				} else {
					style[ name ] = value;
				}
			}

		} else {

			// If a hook was provided get the non-computed value from there
			if ( hooks && "get" in hooks &&
				( ret = hooks.get( elem, false, extra ) ) !== undefined ) {

				return ret;
			}

			// Otherwise just get the value from the style object
			return style[ name ];
		}
	},

	css: function( elem, name, extra, styles ) {
		var val, num, hooks,
			origName = camelCase( name ),
			isCustomProp = rcustomProp.test( name );

		// Make sure that we're working with the right name. We don't
		// want to modify the value if it is a CSS custom property
		// since they are user-defined.
		if ( !isCustomProp ) {
			name = finalPropName( origName );
		}

		// Try prefixed name followed by the unprefixed name
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// If a hook was provided get the computed value from there
		if ( hooks && "get" in hooks ) {
			val = hooks.get( elem, true, extra );
		}

		// Otherwise, if a way to get the computed value exists, use that
		if ( val === undefined ) {
			val = curCSS( elem, name, styles );
		}

		// Convert "normal" to computed value
		if ( val === "normal" && name in cssNormalTransform ) {
			val = cssNormalTransform[ name ];
		}

		// Make numeric if forced or a qualifier was provided and val looks numeric
		if ( extra === "" || extra ) {
			num = parseFloat( val );
			return extra === true || isFinite( num ) ? num || 0 : val;
		}

		return val;
	}
} );

jQuery.each( [ "height", "width" ], function( i, dimension ) {
	jQuery.cssHooks[ dimension ] = {
		get: function( elem, computed, extra ) {
			if ( computed ) {

				// Certain elements can have dimension info if we invisibly show them
				// but it must have a current display style that would benefit
				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&

					// Support: Safari 8+
					// Table columns in Safari have non-zero offsetWidth & zero
					// getBoundingClientRect().width unless display is changed.
					// Support: IE <=11 only
					// Running getBoundingClientRect on a disconnected node
					// in IE throws an error.
					( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
						swap( elem, cssShow, function() {
							return getWidthOrHeight( elem, dimension, extra );
						} ) :
						getWidthOrHeight( elem, dimension, extra );
			}
		},

		set: function( elem, value, extra ) {
			var matches,
				styles = getStyles( elem ),
				isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
				subtract = extra && boxModelAdjustment(
					elem,
					dimension,
					extra,
					isBorderBox,
					styles
				);

			// Account for unreliable border-box dimensions by comparing offset* to computed and
			// faking a content-box to get border and padding (gh-3699)
			if ( isBorderBox && support.scrollboxSize() === styles.position ) {
				subtract -= Math.ceil(
					elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
					parseFloat( styles[ dimension ] ) -
					boxModelAdjustment( elem, dimension, "border", false, styles ) -
					0.5
				);
			}

			// Convert to pixels if value adjustment is needed
			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
				( matches[ 3 ] || "px" ) !== "px" ) {

				elem.style[ dimension ] = value;
				value = jQuery.css( elem, dimension );
			}

			return setPositiveNumber( elem, value, subtract );
		}
	};
} );

jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
	function( elem, computed ) {
		if ( computed ) {
			return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
				elem.getBoundingClientRect().left -
					swap( elem, { marginLeft: 0 }, function() {
						return elem.getBoundingClientRect().left;
					} )
				) + "px";
		}
	}
);

// These hooks are used by animate to expand properties
jQuery.each( {
	margin: "",
	padding: "",
	border: "Width"
}, function( prefix, suffix ) {
	jQuery.cssHooks[ prefix + suffix ] = {
		expand: function( value ) {
			var i = 0,
				expanded = {},

				// Assumes a single number if not a string
				parts = typeof value === "string" ? value.split( " " ) : [ value ];

			for ( ; i < 4; i++ ) {
				expanded[ prefix + cssExpand[ i ] + suffix ] =
					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
			}

			return expanded;
		}
	};

	if ( prefix !== "margin" ) {
		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
	}
} );

jQuery.fn.extend( {
	css: function( name, value ) {
		return access( this, function( elem, name, value ) {
			var styles, len,
				map = {},
				i = 0;

			if ( Array.isArray( name ) ) {
				styles = getStyles( elem );
				len = name.length;

				for ( ; i < len; i++ ) {
					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
				}

				return map;
			}

			return value !== undefined ?
				jQuery.style( elem, name, value ) :
				jQuery.css( elem, name );
		}, name, value, arguments.length > 1 );
	}
} );


function Tween( elem, options, prop, end, easing ) {
	return new Tween.prototype.init( elem, options, prop, end, easing );
}
jQuery.Tween = Tween;

Tween.prototype = {
	constructor: Tween,
	init: function( elem, options, prop, end, easing, unit ) {
		this.elem = elem;
		this.prop = prop;
		this.easing = easing || jQuery.easing._default;
		this.options = options;
		this.start = this.now = this.cur();
		this.end = end;
		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
	},
	cur: function() {
		var hooks = Tween.propHooks[ this.prop ];

		return hooks && hooks.get ?
			hooks.get( this ) :
			Tween.propHooks._default.get( this );
	},
	run: function( percent ) {
		var eased,
			hooks = Tween.propHooks[ this.prop ];

		if ( this.options.duration ) {
			this.pos = eased = jQuery.easing[ this.easing ](
				percent, this.options.duration * percent, 0, 1, this.options.duration
			);
		} else {
			this.pos = eased = percent;
		}
		this.now = ( this.end - this.start ) * eased + this.start;

		if ( this.options.step ) {
			this.options.step.call( this.elem, this.now, this );
		}

		if ( hooks && hooks.set ) {
			hooks.set( this );
		} else {
			Tween.propHooks._default.set( this );
		}
		return this;
	}
};

Tween.prototype.init.prototype = Tween.prototype;

Tween.propHooks = {
	_default: {
		get: function( tween ) {
			var result;

			// Use a property on the element directly when it is not a DOM element,
			// or when there is no matching style property that exists.
			if ( tween.elem.nodeType !== 1 ||
				tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
				return tween.elem[ tween.prop ];
			}

			// Passing an empty string as a 3rd parameter to .css will automatically
			// attempt a parseFloat and fallback to a string if the parse fails.
			// Simple values such as "10px" are parsed to Float;
			// complex values such as "rotate(1rad)" are returned as-is.
			result = jQuery.css( tween.elem, tween.prop, "" );

			// Empty strings, null, undefined and "auto" are converted to 0.
			return !result || result === "auto" ? 0 : result;
		},
		set: function( tween ) {

			// Use step hook for back compat.
			// Use cssHook if its there.
			// Use .style if available and use plain properties where available.
			if ( jQuery.fx.step[ tween.prop ] ) {
				jQuery.fx.step[ tween.prop ]( tween );
			} else if ( tween.elem.nodeType === 1 &&
				( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
					jQuery.cssHooks[ tween.prop ] ) ) {
				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
			} else {
				tween.elem[ tween.prop ] = tween.now;
			}
		}
	}
};

// Support: IE <=9 only
// Panic based approach to setting things on disconnected nodes
Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
	set: function( tween ) {
		if ( tween.elem.nodeType && tween.elem.parentNode ) {
			tween.elem[ tween.prop ] = tween.now;
		}
	}
};

jQuery.easing = {
	linear: function( p ) {
		return p;
	},
	swing: function( p ) {
		return 0.5 - Math.cos( p * Math.PI ) / 2;
	},
	_default: "swing"
};

jQuery.fx = Tween.prototype.init;

// Back compat <1.8 extension point
jQuery.fx.step = {};




var
	fxNow, inProgress,
	rfxtypes = /^(?:toggle|show|hide)$/,
	rrun = /queueHooks$/;

function schedule() {
	if ( inProgress ) {
		if ( document.hidden === false && window.requestAnimationFrame ) {
			window.requestAnimationFrame( schedule );
		} else {
			window.setTimeout( schedule, jQuery.fx.interval );
		}

		jQuery.fx.tick();
	}
}

// Animations created synchronously will run synchronously
function createFxNow() {
	window.setTimeout( function() {
		fxNow = undefined;
	} );
	return ( fxNow = Date.now() );
}

// Generate parameters to create a standard animation
function genFx( type, includeWidth ) {
	var which,
		i = 0,
		attrs = { height: type };

	// If we include width, step value is 1 to do all cssExpand values,
	// otherwise step value is 2 to skip over Left and Right
	includeWidth = includeWidth ? 1 : 0;
	for ( ; i < 4; i += 2 - includeWidth ) {
		which = cssExpand[ i ];
		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
	}

	if ( includeWidth ) {
		attrs.opacity = attrs.width = type;
	}

	return attrs;
}

function createTween( value, prop, animation ) {
	var tween,
		collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
		index = 0,
		length = collection.length;
	for ( ; index < length; index++ ) {
		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {

			// We're done with this property
			return tween;
		}
	}
}

function defaultPrefilter( elem, props, opts ) {
	var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,
		isBox = "width" in props || "height" in props,
		anim = this,
		orig = {},
		style = elem.style,
		hidden = elem.nodeType && isHiddenWithinTree( elem ),
		dataShow = dataPriv.get( elem, "fxshow" );

	// Queue-skipping animations hijack the fx hooks
	if ( !opts.queue ) {
		hooks = jQuery._queueHooks( elem, "fx" );
		if ( hooks.unqueued == null ) {
			hooks.unqueued = 0;
			oldfire = hooks.empty.fire;
			hooks.empty.fire = function() {
				if ( !hooks.unqueued ) {
					oldfire();
				}
			};
		}
		hooks.unqueued++;

		anim.always( function() {

			// Ensure the complete handler is called before this completes
			anim.always( function() {
				hooks.unqueued--;
				if ( !jQuery.queue( elem, "fx" ).length ) {
					hooks.empty.fire();
				}
			} );
		} );
	}

	// Detect show/hide animations
	for ( prop in props ) {
		value = props[ prop ];
		if ( rfxtypes.test( value ) ) {
			delete props[ prop ];
			toggle = toggle || value === "toggle";
			if ( value === ( hidden ? "hide" : "show" ) ) {

				// Pretend to be hidden if this is a "show" and
				// there is still data from a stopped show/hide
				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
					hidden = true;

				// Ignore all other no-op show/hide data
				} else {
					continue;
				}
			}
			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
		}
	}

	// Bail out if this is a no-op like .hide().hide()
	propTween = !jQuery.isEmptyObject( props );
	if ( !propTween && jQuery.isEmptyObject( orig ) ) {
		return;
	}

	// Restrict "overflow" and "display" styles during box animations
	if ( isBox && elem.nodeType === 1 ) {

		// Support: IE <=9 - 11, Edge 12 - 15
		// Record all 3 overflow attributes because IE does not infer the shorthand
		// from identically-valued overflowX and overflowY and Edge just mirrors
		// the overflowX value there.
		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];

		// Identify a display type, preferring old show/hide data over the CSS cascade
		restoreDisplay = dataShow && dataShow.display;
		if ( restoreDisplay == null ) {
			restoreDisplay = dataPriv.get( elem, "display" );
		}
		display = jQuery.css( elem, "display" );
		if ( display === "none" ) {
			if ( restoreDisplay ) {
				display = restoreDisplay;
			} else {

				// Get nonempty value(s) by temporarily forcing visibility
				showHide( [ elem ], true );
				restoreDisplay = elem.style.display || restoreDisplay;
				display = jQuery.css( elem, "display" );
				showHide( [ elem ] );
			}
		}

		// Animate inline elements as inline-block
		if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) {
			if ( jQuery.css( elem, "float" ) === "none" ) {

				// Restore the original display value at the end of pure show/hide animations
				if ( !propTween ) {
					anim.done( function() {
						style.display = restoreDisplay;
					} );
					if ( restoreDisplay == null ) {
						display = style.display;
						restoreDisplay = display === "none" ? "" : display;
					}
				}
				style.display = "inline-block";
			}
		}
	}

	if ( opts.overflow ) {
		style.overflow = "hidden";
		anim.always( function() {
			style.overflow = opts.overflow[ 0 ];
			style.overflowX = opts.overflow[ 1 ];
			style.overflowY = opts.overflow[ 2 ];
		} );
	}

	// Implement show/hide animations
	propTween = false;
	for ( prop in orig ) {

		// General show/hide setup for this element animation
		if ( !propTween ) {
			if ( dataShow ) {
				if ( "hidden" in dataShow ) {
					hidden = dataShow.hidden;
				}
			} else {
				dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } );
			}

			// Store hidden/visible for toggle so `.stop().toggle()` "reverses"
			if ( toggle ) {
				dataShow.hidden = !hidden;
			}

			// Show elements before animating them
			if ( hidden ) {
				showHide( [ elem ], true );
			}

			/* eslint-disable no-loop-func */

			anim.done( function() {

			/* eslint-enable no-loop-func */

				// The final step of a "hide" animation is actually hiding the element
				if ( !hidden ) {
					showHide( [ elem ] );
				}
				dataPriv.remove( elem, "fxshow" );
				for ( prop in orig ) {
					jQuery.style( elem, prop, orig[ prop ] );
				}
			} );
		}

		// Per-property setup
		propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
		if ( !( prop in dataShow ) ) {
			dataShow[ prop ] = propTween.start;
			if ( hidden ) {
				propTween.end = propTween.start;
				propTween.start = 0;
			}
		}
	}
}

function propFilter( props, specialEasing ) {
	var index, name, easing, value, hooks;

	// camelCase, specialEasing and expand cssHook pass
	for ( index in props ) {
		name = camelCase( index );
		easing = specialEasing[ name ];
		value = props[ index ];
		if ( Array.isArray( value ) ) {
			easing = value[ 1 ];
			value = props[ index ] = value[ 0 ];
		}

		if ( index !== name ) {
			props[ name ] = value;
			delete props[ index ];
		}

		hooks = jQuery.cssHooks[ name ];
		if ( hooks && "expand" in hooks ) {
			value = hooks.expand( value );
			delete props[ name ];

			// Not quite $.extend, this won't overwrite existing keys.
			// Reusing 'index' because we have the correct "name"
			for ( index in value ) {
				if ( !( index in props ) ) {
					props[ index ] = value[ index ];
					specialEasing[ index ] = easing;
				}
			}
		} else {
			specialEasing[ name ] = easing;
		}
	}
}

function Animation( elem, properties, options ) {
	var result,
		stopped,
		index = 0,
		length = Animation.prefilters.length,
		deferred = jQuery.Deferred().always( function() {

			// Don't match elem in the :animated selector
			delete tick.elem;
		} ),
		tick = function() {
			if ( stopped ) {
				return false;
			}
			var currentTime = fxNow || createFxNow(),
				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),

				// Support: Android 2.3 only
				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
				temp = remaining / animation.duration || 0,
				percent = 1 - temp,
				index = 0,
				length = animation.tweens.length;

			for ( ; index < length; index++ ) {
				animation.tweens[ index ].run( percent );
			}

			deferred.notifyWith( elem, [ animation, percent, remaining ] );

			// If there's more to do, yield
			if ( percent < 1 && length ) {
				return remaining;
			}

			// If this was an empty animation, synthesize a final progress notification
			if ( !length ) {
				deferred.notifyWith( elem, [ animation, 1, 0 ] );
			}

			// Resolve the animation and report its conclusion
			deferred.resolveWith( elem, [ animation ] );
			return false;
		},
		animation = deferred.promise( {
			elem: elem,
			props: jQuery.extend( {}, properties ),
			opts: jQuery.extend( true, {
				specialEasing: {},
				easing: jQuery.easing._default
			}, options ),
			originalProperties: properties,
			originalOptions: options,
			startTime: fxNow || createFxNow(),
			duration: options.duration,
			tweens: [],
			createTween: function( prop, end ) {
				var tween = jQuery.Tween( elem, animation.opts, prop, end,
						animation.opts.specialEasing[ prop ] || animation.opts.easing );
				animation.tweens.push( tween );
				return tween;
			},
			stop: function( gotoEnd ) {
				var index = 0,

					// If we are going to the end, we want to run all the tweens
					// otherwise we skip this part
					length = gotoEnd ? animation.tweens.length : 0;
				if ( stopped ) {
					return this;
				}
				stopped = true;
				for ( ; index < length; index++ ) {
					animation.tweens[ index ].run( 1 );
				}

				// Resolve when we played the last frame; otherwise, reject
				if ( gotoEnd ) {
					deferred.notifyWith( elem, [ animation, 1, 0 ] );
					deferred.resolveWith( elem, [ animation, gotoEnd ] );
				} else {
					deferred.rejectWith( elem, [ animation, gotoEnd ] );
				}
				return this;
			}
		} ),
		props = animation.props;

	propFilter( props, animation.opts.specialEasing );

	for ( ; index < length; index++ ) {
		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
		if ( result ) {
			if ( isFunction( result.stop ) ) {
				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
					result.stop.bind( result );
			}
			return result;
		}
	}

	jQuery.map( props, createTween, animation );

	if ( isFunction( animation.opts.start ) ) {
		animation.opts.start.call( elem, animation );
	}

	// Attach callbacks from options
	animation
		.progress( animation.opts.progress )
		.done( animation.opts.done, animation.opts.complete )
		.fail( animation.opts.fail )
		.always( animation.opts.always );

	jQuery.fx.timer(
		jQuery.extend( tick, {
			elem: elem,
			anim: animation,
			queue: animation.opts.queue
		} )
	);

	return animation;
}

jQuery.Animation = jQuery.extend( Animation, {

	tweeners: {
		"*": [ function( prop, value ) {
			var tween = this.createTween( prop, value );
			adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
			return tween;
		} ]
	},

	tweener: function( props, callback ) {
		if ( isFunction( props ) ) {
			callback = props;
			props = [ "*" ];
		} else {
			props = props.match( rnothtmlwhite );
		}

		var prop,
			index = 0,
			length = props.length;

		for ( ; index < length; index++ ) {
			prop = props[ index ];
			Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
			Animation.tweeners[ prop ].unshift( callback );
		}
	},

	prefilters: [ defaultPrefilter ],

	prefilter: function( callback, prepend ) {
		if ( prepend ) {
			Animation.prefilters.unshift( callback );
		} else {
			Animation.prefilters.push( callback );
		}
	}
} );

jQuery.speed = function( speed, easing, fn ) {
	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
		complete: fn || !fn && easing ||
			isFunction( speed ) && speed,
		duration: speed,
		easing: fn && easing || easing && !isFunction( easing ) && easing
	};

	// Go to the end state if fx are off
	if ( jQuery.fx.off ) {
		opt.duration = 0;

	} else {
		if ( typeof opt.duration !== "number" ) {
			if ( opt.duration in jQuery.fx.speeds ) {
				opt.duration = jQuery.fx.speeds[ opt.duration ];

			} else {
				opt.duration = jQuery.fx.speeds._default;
			}
		}
	}

	// Normalize opt.queue - true/undefined/null -> "fx"
	if ( opt.queue == null || opt.queue === true ) {
		opt.queue = "fx";
	}

	// Queueing
	opt.old = opt.complete;

	opt.complete = function() {
		if ( isFunction( opt.old ) ) {
			opt.old.call( this );
		}

		if ( opt.queue ) {
			jQuery.dequeue( this, opt.queue );
		}
	};

	return opt;
};

jQuery.fn.extend( {
	fadeTo: function( speed, to, easing, callback ) {

		// Show any hidden elements after setting opacity to 0
		return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show()

			// Animate to the value specified
			.end().animate( { opacity: to }, speed, easing, callback );
	},
	animate: function( prop, speed, easing, callback ) {
		var empty = jQuery.isEmptyObject( prop ),
			optall = jQuery.speed( speed, easing, callback ),
			doAnimation = function() {

				// Operate on a copy of prop so per-property easing won't be lost
				var anim = Animation( this, jQuery.extend( {}, prop ), optall );

				// Empty animations, or finishing resolves immediately
				if ( empty || dataPriv.get( this, "finish" ) ) {
					anim.stop( true );
				}
			};
			doAnimation.finish = doAnimation;

		return empty || optall.queue === false ?
			this.each( doAnimation ) :
			this.queue( optall.queue, doAnimation );
	},
	stop: function( type, clearQueue, gotoEnd ) {
		var stopQueue = function( hooks ) {
			var stop = hooks.stop;
			delete hooks.stop;
			stop( gotoEnd );
		};

		if ( typeof type !== "string" ) {
			gotoEnd = clearQueue;
			clearQueue = type;
			type = undefined;
		}
		if ( clearQueue && type !== false ) {
			this.queue( type || "fx", [] );
		}

		return this.each( function() {
			var dequeue = true,
				index = type != null && type + "queueHooks",
				timers = jQuery.timers,
				data = dataPriv.get( this );

			if ( index ) {
				if ( data[ index ] && data[ index ].stop ) {
					stopQueue( data[ index ] );
				}
			} else {
				for ( index in data ) {
					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
						stopQueue( data[ index ] );
					}
				}
			}

			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this &&
					( type == null || timers[ index ].queue === type ) ) {

					timers[ index ].anim.stop( gotoEnd );
					dequeue = false;
					timers.splice( index, 1 );
				}
			}

			// Start the next in the queue if the last step wasn't forced.
			// Timers currently will call their complete callbacks, which
			// will dequeue but only if they were gotoEnd.
			if ( dequeue || !gotoEnd ) {
				jQuery.dequeue( this, type );
			}
		} );
	},
	finish: function( type ) {
		if ( type !== false ) {
			type = type || "fx";
		}
		return this.each( function() {
			var index,
				data = dataPriv.get( this ),
				queue = data[ type + "queue" ],
				hooks = data[ type + "queueHooks" ],
				timers = jQuery.timers,
				length = queue ? queue.length : 0;

			// Enable finishing flag on private data
			data.finish = true;

			// Empty the queue first
			jQuery.queue( this, type, [] );

			if ( hooks && hooks.stop ) {
				hooks.stop.call( this, true );
			}

			// Look for any active animations, and finish them
			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
					timers[ index ].anim.stop( true );
					timers.splice( index, 1 );
				}
			}

			// Look for any animations in the old queue and finish them
			for ( index = 0; index < length; index++ ) {
				if ( queue[ index ] && queue[ index ].finish ) {
					queue[ index ].finish.call( this );
				}
			}

			// Turn off finishing flag
			delete data.finish;
		} );
	}
} );

jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) {
	var cssFn = jQuery.fn[ name ];
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return speed == null || typeof speed === "boolean" ?
			cssFn.apply( this, arguments ) :
			this.animate( genFx( name, true ), speed, easing, callback );
	};
} );

// Generate shortcuts for custom animations
jQuery.each( {
	slideDown: genFx( "show" ),
	slideUp: genFx( "hide" ),
	slideToggle: genFx( "toggle" ),
	fadeIn: { opacity: "show" },
	fadeOut: { opacity: "hide" },
	fadeToggle: { opacity: "toggle" }
}, function( name, props ) {
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return this.animate( props, speed, easing, callback );
	};
} );

jQuery.timers = [];
jQuery.fx.tick = function() {
	var timer,
		i = 0,
		timers = jQuery.timers;

	fxNow = Date.now();

	for ( ; i < timers.length; i++ ) {
		timer = timers[ i ];

		// Run the timer and safely remove it when done (allowing for external removal)
		if ( !timer() && timers[ i ] === timer ) {
			timers.splice( i--, 1 );
		}
	}

	if ( !timers.length ) {
		jQuery.fx.stop();
	}
	fxNow = undefined;
};

jQuery.fx.timer = function( timer ) {
	jQuery.timers.push( timer );
	jQuery.fx.start();
};

jQuery.fx.interval = 13;
jQuery.fx.start = function() {
	if ( inProgress ) {
		return;
	}

	inProgress = true;
	schedule();
};

jQuery.fx.stop = function() {
	inProgress = null;
};

jQuery.fx.speeds = {
	slow: 600,
	fast: 200,

	// Default speed
	_default: 400
};


// Based off of the plugin by Clint Helfers, with permission.
// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
jQuery.fn.delay = function( time, type ) {
	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
	type = type || "fx";

	return this.queue( type, function( next, hooks ) {
		var timeout = window.setTimeout( next, time );
		hooks.stop = function() {
			window.clearTimeout( timeout );
		};
	} );
};


( function() {
	var input = document.createElement( "input" ),
		select = document.createElement( "select" ),
		opt = select.appendChild( document.createElement( "option" ) );

	input.type = "checkbox";

	// Support: Android <=4.3 only
	// Default value for a checkbox should be "on"
	support.checkOn = input.value !== "";

	// Support: IE <=11 only
	// Must access selectedIndex to make default options select
	support.optSelected = opt.selected;

	// Support: IE <=11 only
	// An input loses its value after becoming a radio
	input = document.createElement( "input" );
	input.value = "t";
	input.type = "radio";
	support.radioValue = input.value === "t";
} )();


var boolHook,
	attrHandle = jQuery.expr.attrHandle;

jQuery.fn.extend( {
	attr: function( name, value ) {
		return access( this, jQuery.attr, name, value, arguments.length > 1 );
	},

	removeAttr: function( name ) {
		return this.each( function() {
			jQuery.removeAttr( this, name );
		} );
	}
} );

jQuery.extend( {
	attr: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set attributes on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		// Fallback to prop when attributes are not supported
		if ( typeof elem.getAttribute === "undefined" ) {
			return jQuery.prop( elem, name, value );
		}

		// Attribute hooks are determined by the lowercase version
		// Grab necessary hook if one is defined
		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
			hooks = jQuery.attrHooks[ name.toLowerCase() ] ||
				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
		}

		if ( value !== undefined ) {
			if ( value === null ) {
				jQuery.removeAttr( elem, name );
				return;
			}

			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			elem.setAttribute( name, value + "" );
			return value;
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		ret = jQuery.find.attr( elem, name );

		// Non-existent attributes return null, we normalize to undefined
		return ret == null ? undefined : ret;
	},

	attrHooks: {
		type: {
			set: function( elem, value ) {
				if ( !support.radioValue && value === "radio" &&
					nodeName( elem, "input" ) ) {
					var val = elem.value;
					elem.setAttribute( "type", value );
					if ( val ) {
						elem.value = val;
					}
					return value;
				}
			}
		}
	},

	removeAttr: function( elem, value ) {
		var name,
			i = 0,

			// Attribute names can contain non-HTML whitespace characters
			// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
			attrNames = value && value.match( rnothtmlwhite );

		if ( attrNames && elem.nodeType === 1 ) {
			while ( ( name = attrNames[ i++ ] ) ) {
				elem.removeAttribute( name );
			}
		}
	}
} );

// Hooks for boolean attributes
boolHook = {
	set: function( elem, value, name ) {
		if ( value === false ) {

			// Remove boolean attributes when set to false
			jQuery.removeAttr( elem, name );
		} else {
			elem.setAttribute( name, name );
		}
		return name;
	}
};

jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
	var getter = attrHandle[ name ] || jQuery.find.attr;

	attrHandle[ name ] = function( elem, name, isXML ) {
		var ret, handle,
			lowercaseName = name.toLowerCase();

		if ( !isXML ) {

			// Avoid an infinite loop by temporarily removing this function from the getter
			handle = attrHandle[ lowercaseName ];
			attrHandle[ lowercaseName ] = ret;
			ret = getter( elem, name, isXML ) != null ?
				lowercaseName :
				null;
			attrHandle[ lowercaseName ] = handle;
		}
		return ret;
	};
} );




var rfocusable = /^(?:input|select|textarea|button)$/i,
	rclickable = /^(?:a|area)$/i;

jQuery.fn.extend( {
	prop: function( name, value ) {
		return access( this, jQuery.prop, name, value, arguments.length > 1 );
	},

	removeProp: function( name ) {
		return this.each( function() {
			delete this[ jQuery.propFix[ name ] || name ];
		} );
	}
} );

jQuery.extend( {
	prop: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set properties on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {

			// Fix name and attach hooks
			name = jQuery.propFix[ name ] || name;
			hooks = jQuery.propHooks[ name ];
		}

		if ( value !== undefined ) {
			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			return ( elem[ name ] = value );
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		return elem[ name ];
	},

	propHooks: {
		tabIndex: {
			get: function( elem ) {

				// Support: IE <=9 - 11 only
				// elem.tabIndex doesn't always return the
				// correct value when it hasn't been explicitly set
				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
				// Use proper attribute retrieval(#12072)
				var tabindex = jQuery.find.attr( elem, "tabindex" );

				if ( tabindex ) {
					return parseInt( tabindex, 10 );
				}

				if (
					rfocusable.test( elem.nodeName ) ||
					rclickable.test( elem.nodeName ) &&
					elem.href
				) {
					return 0;
				}

				return -1;
			}
		}
	},

	propFix: {
		"for": "htmlFor",
		"class": "className"
	}
} );

// Support: IE <=11 only
// Accessing the selectedIndex property
// forces the browser to respect setting selected
// on the option
// The getter ensures a default option is selected
// when in an optgroup
// eslint rule "no-unused-expressions" is disabled for this code
// since it considers such accessions noop
if ( !support.optSelected ) {
	jQuery.propHooks.selected = {
		get: function( elem ) {

			/* eslint no-unused-expressions: "off" */

			var parent = elem.parentNode;
			if ( parent && parent.parentNode ) {
				parent.parentNode.selectedIndex;
			}
			return null;
		},
		set: function( elem ) {

			/* eslint no-unused-expressions: "off" */

			var parent = elem.parentNode;
			if ( parent ) {
				parent.selectedIndex;

				if ( parent.parentNode ) {
					parent.parentNode.selectedIndex;
				}
			}
		}
	};
}

jQuery.each( [
	"tabIndex",
	"readOnly",
	"maxLength",
	"cellSpacing",
	"cellPadding",
	"rowSpan",
	"colSpan",
	"useMap",
	"frameBorder",
	"contentEditable"
], function() {
	jQuery.propFix[ this.toLowerCase() ] = this;
} );




	// Strip and collapse whitespace according to HTML spec
	// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace
	function stripAndCollapse( value ) {
		var tokens = value.match( rnothtmlwhite ) || [];
		return tokens.join( " " );
	}


function getClass( elem ) {
	return elem.getAttribute && elem.getAttribute( "class" ) || "";
}

function classesToArray( value ) {
	if ( Array.isArray( value ) ) {
		return value;
	}
	if ( typeof value === "string" ) {
		return value.match( rnothtmlwhite ) || [];
	}
	return [];
}

jQuery.fn.extend( {
	addClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		classes = classesToArray( value );

		if ( classes.length ) {
			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );
				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {
						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
							cur += clazz + " ";
						}
					}

					// Only assign if different to avoid unneeded rendering.
					finalValue = stripAndCollapse( cur );
					if ( curValue !== finalValue ) {
						elem.setAttribute( "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	removeClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		if ( !arguments.length ) {
			return this.attr( "class", "" );
		}

		classes = classesToArray( value );

		if ( classes.length ) {
			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );

				// This expression is here for better compressibility (see addClass)
				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {

						// Remove *all* instances
						while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
							cur = cur.replace( " " + clazz + " ", " " );
						}
					}

					// Only assign if different to avoid unneeded rendering.
					finalValue = stripAndCollapse( cur );
					if ( curValue !== finalValue ) {
						elem.setAttribute( "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	toggleClass: function( value, stateVal ) {
		var type = typeof value,
			isValidValue = type === "string" || Array.isArray( value );

		if ( typeof stateVal === "boolean" && isValidValue ) {
			return stateVal ? this.addClass( value ) : this.removeClass( value );
		}

		if ( isFunction( value ) ) {
			return this.each( function( i ) {
				jQuery( this ).toggleClass(
					value.call( this, i, getClass( this ), stateVal ),
					stateVal
				);
			} );
		}

		return this.each( function() {
			var className, i, self, classNames;

			if ( isValidValue ) {

				// Toggle individual class names
				i = 0;
				self = jQuery( this );
				classNames = classesToArray( value );

				while ( ( className = classNames[ i++ ] ) ) {

					// Check each className given, space separated list
					if ( self.hasClass( className ) ) {
						self.removeClass( className );
					} else {
						self.addClass( className );
					}
				}

			// Toggle whole class name
			} else if ( value === undefined || type === "boolean" ) {
				className = getClass( this );
				if ( className ) {

					// Store className if set
					dataPriv.set( this, "__className__", className );
				}

				// If the element has a class name or if we're passed `false`,
				// then remove the whole classname (if there was one, the above saved it).
				// Otherwise bring back whatever was previously saved (if anything),
				// falling back to the empty string if nothing was stored.
				if ( this.setAttribute ) {
					this.setAttribute( "class",
						className || value === false ?
						"" :
						dataPriv.get( this, "__className__" ) || ""
					);
				}
			}
		} );
	},

	hasClass: function( selector ) {
		var className, elem,
			i = 0;

		className = " " + selector + " ";
		while ( ( elem = this[ i++ ] ) ) {
			if ( elem.nodeType === 1 &&
				( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) {
					return true;
			}
		}

		return false;
	}
} );




var rreturn = /\r/g;

jQuery.fn.extend( {
	val: function( value ) {
		var hooks, ret, valueIsFunction,
			elem = this[ 0 ];

		if ( !arguments.length ) {
			if ( elem ) {
				hooks = jQuery.valHooks[ elem.type ] ||
					jQuery.valHooks[ elem.nodeName.toLowerCase() ];

				if ( hooks &&
					"get" in hooks &&
					( ret = hooks.get( elem, "value" ) ) !== undefined
				) {
					return ret;
				}

				ret = elem.value;

				// Handle most common string cases
				if ( typeof ret === "string" ) {
					return ret.replace( rreturn, "" );
				}

				// Handle cases where value is null/undef or number
				return ret == null ? "" : ret;
			}

			return;
		}

		valueIsFunction = isFunction( value );

		return this.each( function( i ) {
			var val;

			if ( this.nodeType !== 1 ) {
				return;
			}

			if ( valueIsFunction ) {
				val = value.call( this, i, jQuery( this ).val() );
			} else {
				val = value;
			}

			// Treat null/undefined as ""; convert numbers to string
			if ( val == null ) {
				val = "";

			} else if ( typeof val === "number" ) {
				val += "";

			} else if ( Array.isArray( val ) ) {
				val = jQuery.map( val, function( value ) {
					return value == null ? "" : value + "";
				} );
			}

			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];

			// If set returns undefined, fall back to normal setting
			if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
				this.value = val;
			}
		} );
	}
} );

jQuery.extend( {
	valHooks: {
		option: {
			get: function( elem ) {

				var val = jQuery.find.attr( elem, "value" );
				return val != null ?
					val :

					// Support: IE <=10 - 11 only
					// option.text throws exceptions (#14686, #14858)
					// Strip and collapse whitespace
					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
					stripAndCollapse( jQuery.text( elem ) );
			}
		},
		select: {
			get: function( elem ) {
				var value, option, i,
					options = elem.options,
					index = elem.selectedIndex,
					one = elem.type === "select-one",
					values = one ? null : [],
					max = one ? index + 1 : options.length;

				if ( index < 0 ) {
					i = max;

				} else {
					i = one ? index : 0;
				}

				// Loop through all the selected options
				for ( ; i < max; i++ ) {
					option = options[ i ];

					// Support: IE <=9 only
					// IE8-9 doesn't update selected after form reset (#2551)
					if ( ( option.selected || i === index ) &&

							// Don't return options that are disabled or in a disabled optgroup
							!option.disabled &&
							( !option.parentNode.disabled ||
								!nodeName( option.parentNode, "optgroup" ) ) ) {

						// Get the specific value for the option
						value = jQuery( option ).val();

						// We don't need an array for one selects
						if ( one ) {
							return value;
						}

						// Multi-Selects return an array
						values.push( value );
					}
				}

				return values;
			},

			set: function( elem, value ) {
				var optionSet, option,
					options = elem.options,
					values = jQuery.makeArray( value ),
					i = options.length;

				while ( i-- ) {
					option = options[ i ];

					/* eslint-disable no-cond-assign */

					if ( option.selected =
						jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
					) {
						optionSet = true;
					}

					/* eslint-enable no-cond-assign */
				}

				// Force browsers to behave consistently when non-matching value is set
				if ( !optionSet ) {
					elem.selectedIndex = -1;
				}
				return values;
			}
		}
	}
} );

// Radios and checkboxes getter/setter
jQuery.each( [ "radio", "checkbox" ], function() {
	jQuery.valHooks[ this ] = {
		set: function( elem, value ) {
			if ( Array.isArray( value ) ) {
				return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
			}
		}
	};
	if ( !support.checkOn ) {
		jQuery.valHooks[ this ].get = function( elem ) {
			return elem.getAttribute( "value" ) === null ? "on" : elem.value;
		};
	}
} );




// Return jQuery for attributes-only inclusion


support.focusin = "onfocusin" in window;


var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
	stopPropagationCallback = function( e ) {
		e.stopPropagation();
	};

jQuery.extend( jQuery.event, {

	trigger: function( event, data, elem, onlyHandlers ) {

		var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,
			eventPath = [ elem || document ],
			type = hasOwn.call( event, "type" ) ? event.type : event,
			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];

		cur = lastElement = tmp = elem = elem || document;

		// Don't do events on text and comment nodes
		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
			return;
		}

		// focus/blur morphs to focusin/out; ensure we're not firing them right now
		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
			return;
		}

		if ( type.indexOf( "." ) > -1 ) {

			// Namespaced trigger; create a regexp to match event type in handle()
			namespaces = type.split( "." );
			type = namespaces.shift();
			namespaces.sort();
		}
		ontype = type.indexOf( ":" ) < 0 && "on" + type;

		// Caller can pass in a jQuery.Event object, Object, or just an event type string
		event = event[ jQuery.expando ] ?
			event :
			new jQuery.Event( type, typeof event === "object" && event );

		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
		event.isTrigger = onlyHandlers ? 2 : 3;
		event.namespace = namespaces.join( "." );
		event.rnamespace = event.namespace ?
			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
			null;

		// Clean up the event in case it is being reused
		event.result = undefined;
		if ( !event.target ) {
			event.target = elem;
		}

		// Clone any incoming data and prepend the event, creating the handler arg list
		data = data == null ?
			[ event ] :
			jQuery.makeArray( data, [ event ] );

		// Allow special events to draw outside the lines
		special = jQuery.event.special[ type ] || {};
		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
			return;
		}

		// Determine event propagation path in advance, per W3C events spec (#9951)
		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
		if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {

			bubbleType = special.delegateType || type;
			if ( !rfocusMorph.test( bubbleType + type ) ) {
				cur = cur.parentNode;
			}
			for ( ; cur; cur = cur.parentNode ) {
				eventPath.push( cur );
				tmp = cur;
			}

			// Only add window if we got to document (e.g., not plain obj or detached DOM)
			if ( tmp === ( elem.ownerDocument || document ) ) {
				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
			}
		}

		// Fire handlers on the event path
		i = 0;
		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
			lastElement = cur;
			event.type = i > 1 ?
				bubbleType :
				special.bindType || type;

			// jQuery handler
			handle = ( dataPriv.get( cur, "events" ) || {} )[ event.type ] &&
				dataPriv.get( cur, "handle" );
			if ( handle ) {
				handle.apply( cur, data );
			}

			// Native handler
			handle = ontype && cur[ ontype ];
			if ( handle && handle.apply && acceptData( cur ) ) {
				event.result = handle.apply( cur, data );
				if ( event.result === false ) {
					event.preventDefault();
				}
			}
		}
		event.type = type;

		// If nobody prevented the default action, do it now
		if ( !onlyHandlers && !event.isDefaultPrevented() ) {

			if ( ( !special._default ||
				special._default.apply( eventPath.pop(), data ) === false ) &&
				acceptData( elem ) ) {

				// Call a native DOM method on the target with the same name as the event.
				// Don't do default actions on window, that's where global variables be (#6170)
				if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {

					// Don't re-trigger an onFOO event when we call its FOO() method
					tmp = elem[ ontype ];

					if ( tmp ) {
						elem[ ontype ] = null;
					}

					// Prevent re-triggering of the same event, since we already bubbled it above
					jQuery.event.triggered = type;

					if ( event.isPropagationStopped() ) {
						lastElement.addEventListener( type, stopPropagationCallback );
					}

					elem[ type ]();

					if ( event.isPropagationStopped() ) {
						lastElement.removeEventListener( type, stopPropagationCallback );
					}

					jQuery.event.triggered = undefined;

					if ( tmp ) {
						elem[ ontype ] = tmp;
					}
				}
			}
		}

		return event.result;
	},

	// Piggyback on a donor event to simulate a different one
	// Used only for `focus(in | out)` events
	simulate: function( type, elem, event ) {
		var e = jQuery.extend(
			new jQuery.Event(),
			event,
			{
				type: type,
				isSimulated: true
			}
		);

		jQuery.event.trigger( e, null, elem );
	}

} );

jQuery.fn.extend( {

	trigger: function( type, data ) {
		return this.each( function() {
			jQuery.event.trigger( type, data, this );
		} );
	},
	triggerHandler: function( type, data ) {
		var elem = this[ 0 ];
		if ( elem ) {
			return jQuery.event.trigger( type, data, elem, true );
		}
	}
} );


// Support: Firefox <=44
// Firefox doesn't have focus(in | out) events
// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
//
// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
// focus(in | out) events fire after focus & blur events,
// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
if ( !support.focusin ) {
	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {

		// Attach a single capturing handler on the document while someone wants focusin/focusout
		var handler = function( event ) {
			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
		};

		jQuery.event.special[ fix ] = {
			setup: function() {
				var doc = this.ownerDocument || this,
					attaches = dataPriv.access( doc, fix );

				if ( !attaches ) {
					doc.addEventListener( orig, handler, true );
				}
				dataPriv.access( doc, fix, ( attaches || 0 ) + 1 );
			},
			teardown: function() {
				var doc = this.ownerDocument || this,
					attaches = dataPriv.access( doc, fix ) - 1;

				if ( !attaches ) {
					doc.removeEventListener( orig, handler, true );
					dataPriv.remove( doc, fix );

				} else {
					dataPriv.access( doc, fix, attaches );
				}
			}
		};
	} );
}
var location = window.location;

var nonce = Date.now();

var rquery = ( /\?/ );



// Cross-browser xml parsing
jQuery.parseXML = function( data ) {
	var xml;
	if ( !data || typeof data !== "string" ) {
		return null;
	}

	// Support: IE 9 - 11 only
	// IE throws on parseFromString with invalid input.
	try {
		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
	} catch ( e ) {
		xml = undefined;
	}

	if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
		jQuery.error( "Invalid XML: " + data );
	}
	return xml;
};


var
	rbracket = /\[\]$/,
	rCRLF = /\r?\n/g,
	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
	rsubmittable = /^(?:input|select|textarea|keygen)/i;

function buildParams( prefix, obj, traditional, add ) {
	var name;

	if ( Array.isArray( obj ) ) {

		// Serialize array item.
		jQuery.each( obj, function( i, v ) {
			if ( traditional || rbracket.test( prefix ) ) {

				// Treat each array item as a scalar.
				add( prefix, v );

			} else {

				// Item is non-scalar (array or object), encode its numeric index.
				buildParams(
					prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
					v,
					traditional,
					add
				);
			}
		} );

	} else if ( !traditional && toType( obj ) === "object" ) {

		// Serialize object item.
		for ( name in obj ) {
			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
		}

	} else {

		// Serialize scalar item.
		add( prefix, obj );
	}
}

// Serialize an array of form elements or a set of
// key/values into a query string
jQuery.param = function( a, traditional ) {
	var prefix,
		s = [],
		add = function( key, valueOrFunction ) {

			// If value is a function, invoke it and use its return value
			var value = isFunction( valueOrFunction ) ?
				valueOrFunction() :
				valueOrFunction;

			s[ s.length ] = encodeURIComponent( key ) + "=" +
				encodeURIComponent( value == null ? "" : value );
		};

	// If an array was passed in, assume that it is an array of form elements.
	if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {

		// Serialize the form elements
		jQuery.each( a, function() {
			add( this.name, this.value );
		} );

	} else {

		// If traditional, encode the "old" way (the way 1.3.2 or older
		// did it), otherwise encode params recursively.
		for ( prefix in a ) {
			buildParams( prefix, a[ prefix ], traditional, add );
		}
	}

	// Return the resulting serialization
	return s.join( "&" );
};

jQuery.fn.extend( {
	serialize: function() {
		return jQuery.param( this.serializeArray() );
	},
	serializeArray: function() {
		return this.map( function() {

			// Can add propHook for "elements" to filter or add form elements
			var elements = jQuery.prop( this, "elements" );
			return elements ? jQuery.makeArray( elements ) : this;
		} )
		.filter( function() {
			var type = this.type;

			// Use .is( ":disabled" ) so that fieldset[disabled] works
			return this.name && !jQuery( this ).is( ":disabled" ) &&
				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
				( this.checked || !rcheckableType.test( type ) );
		} )
		.map( function( i, elem ) {
			var val = jQuery( this ).val();

			if ( val == null ) {
				return null;
			}

			if ( Array.isArray( val ) ) {
				return jQuery.map( val, function( val ) {
					return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
				} );
			}

			return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
		} ).get();
	}
} );


var
	r20 = /%20/g,
	rhash = /#.*$/,
	rantiCache = /([?&])_=[^&]*/,
	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,

	// #7653, #8125, #8152: local protocol detection
	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
	rnoContent = /^(?:GET|HEAD)$/,
	rprotocol = /^\/\//,

	/* Prefilters
	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
	 * 2) These are called:
	 *    - BEFORE asking for a transport
	 *    - AFTER param serialization (s.data is a string if s.processData is true)
	 * 3) key is the dataType
	 * 4) the catchall symbol "*" can be used
	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
	 */
	prefilters = {},

	/* Transports bindings
	 * 1) key is the dataType
	 * 2) the catchall symbol "*" can be used
	 * 3) selection will start with transport dataType and THEN go to "*" if needed
	 */
	transports = {},

	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
	allTypes = "*/".concat( "*" ),

	// Anchor tag for parsing the document origin
	originAnchor = document.createElement( "a" );
	originAnchor.href = location.href;

// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
function addToPrefiltersOrTransports( structure ) {

	// dataTypeExpression is optional and defaults to "*"
	return function( dataTypeExpression, func ) {

		if ( typeof dataTypeExpression !== "string" ) {
			func = dataTypeExpression;
			dataTypeExpression = "*";
		}

		var dataType,
			i = 0,
			dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];

		if ( isFunction( func ) ) {

			// For each dataType in the dataTypeExpression
			while ( ( dataType = dataTypes[ i++ ] ) ) {

				// Prepend if requested
				if ( dataType[ 0 ] === "+" ) {
					dataType = dataType.slice( 1 ) || "*";
					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );

				// Otherwise append
				} else {
					( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
				}
			}
		}
	};
}

// Base inspection function for prefilters and transports
function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {

	var inspected = {},
		seekingTransport = ( structure === transports );

	function inspect( dataType ) {
		var selected;
		inspected[ dataType ] = true;
		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
			if ( typeof dataTypeOrTransport === "string" &&
				!seekingTransport && !inspected[ dataTypeOrTransport ] ) {

				options.dataTypes.unshift( dataTypeOrTransport );
				inspect( dataTypeOrTransport );
				return false;
			} else if ( seekingTransport ) {
				return !( selected = dataTypeOrTransport );
			}
		} );
		return selected;
	}

	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
}

// A special extend for ajax options
// that takes "flat" options (not to be deep extended)
// Fixes #9887
function ajaxExtend( target, src ) {
	var key, deep,
		flatOptions = jQuery.ajaxSettings.flatOptions || {};

	for ( key in src ) {
		if ( src[ key ] !== undefined ) {
			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
		}
	}
	if ( deep ) {
		jQuery.extend( true, target, deep );
	}

	return target;
}

/* Handles responses to an ajax request:
 * - finds the right dataType (mediates between content-type and expected dataType)
 * - returns the corresponding response
 */
function ajaxHandleResponses( s, jqXHR, responses ) {

	var ct, type, finalDataType, firstDataType,
		contents = s.contents,
		dataTypes = s.dataTypes;

	// Remove auto dataType and get content-type in the process
	while ( dataTypes[ 0 ] === "*" ) {
		dataTypes.shift();
		if ( ct === undefined ) {
			ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
		}
	}

	// Check if we're dealing with a known content-type
	if ( ct ) {
		for ( type in contents ) {
			if ( contents[ type ] && contents[ type ].test( ct ) ) {
				dataTypes.unshift( type );
				break;
			}
		}
	}

	// Check to see if we have a response for the expected dataType
	if ( dataTypes[ 0 ] in responses ) {
		finalDataType = dataTypes[ 0 ];
	} else {

		// Try convertible dataTypes
		for ( type in responses ) {
			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
				finalDataType = type;
				break;
			}
			if ( !firstDataType ) {
				firstDataType = type;
			}
		}

		// Or just use first one
		finalDataType = finalDataType || firstDataType;
	}

	// If we found a dataType
	// We add the dataType to the list if needed
	// and return the corresponding response
	if ( finalDataType ) {
		if ( finalDataType !== dataTypes[ 0 ] ) {
			dataTypes.unshift( finalDataType );
		}
		return responses[ finalDataType ];
	}
}

/* Chain conversions given the request and the original response
 * Also sets the responseXXX fields on the jqXHR instance
 */
function ajaxConvert( s, response, jqXHR, isSuccess ) {
	var conv2, current, conv, tmp, prev,
		converters = {},

		// Work with a copy of dataTypes in case we need to modify it for conversion
		dataTypes = s.dataTypes.slice();

	// Create converters map with lowercased keys
	if ( dataTypes[ 1 ] ) {
		for ( conv in s.converters ) {
			converters[ conv.toLowerCase() ] = s.converters[ conv ];
		}
	}

	current = dataTypes.shift();

	// Convert to each sequential dataType
	while ( current ) {

		if ( s.responseFields[ current ] ) {
			jqXHR[ s.responseFields[ current ] ] = response;
		}

		// Apply the dataFilter if provided
		if ( !prev && isSuccess && s.dataFilter ) {
			response = s.dataFilter( response, s.dataType );
		}

		prev = current;
		current = dataTypes.shift();

		if ( current ) {

			// There's only work to do if current dataType is non-auto
			if ( current === "*" ) {

				current = prev;

			// Convert response if prev dataType is non-auto and differs from current
			} else if ( prev !== "*" && prev !== current ) {

				// Seek a direct converter
				conv = converters[ prev + " " + current ] || converters[ "* " + current ];

				// If none found, seek a pair
				if ( !conv ) {
					for ( conv2 in converters ) {

						// If conv2 outputs current
						tmp = conv2.split( " " );
						if ( tmp[ 1 ] === current ) {

							// If prev can be converted to accepted input
							conv = converters[ prev + " " + tmp[ 0 ] ] ||
								converters[ "* " + tmp[ 0 ] ];
							if ( conv ) {

								// Condense equivalence converters
								if ( conv === true ) {
									conv = converters[ conv2 ];

								// Otherwise, insert the intermediate dataType
								} else if ( converters[ conv2 ] !== true ) {
									current = tmp[ 0 ];
									dataTypes.unshift( tmp[ 1 ] );
								}
								break;
							}
						}
					}
				}

				// Apply converter (if not an equivalence)
				if ( conv !== true ) {

					// Unless errors are allowed to bubble, catch and return them
					if ( conv && s.throws ) {
						response = conv( response );
					} else {
						try {
							response = conv( response );
						} catch ( e ) {
							return {
								state: "parsererror",
								error: conv ? e : "No conversion from " + prev + " to " + current
							};
						}
					}
				}
			}
		}
	}

	return { state: "success", data: response };
}

jQuery.extend( {

	// Counter for holding the number of active queries
	active: 0,

	// Last-Modified header cache for next request
	lastModified: {},
	etag: {},

	ajaxSettings: {
		url: location.href,
		type: "GET",
		isLocal: rlocalProtocol.test( location.protocol ),
		global: true,
		processData: true,
		async: true,
		contentType: "application/x-www-form-urlencoded; charset=UTF-8",

		/*
		timeout: 0,
		data: null,
		dataType: null,
		username: null,
		password: null,
		cache: null,
		throws: false,
		traditional: false,
		headers: {},
		*/

		accepts: {
			"*": allTypes,
			text: "text/plain",
			html: "text/html",
			xml: "application/xml, text/xml",
			json: "application/json, text/javascript"
		},

		contents: {
			xml: /\bxml\b/,
			html: /\bhtml/,
			json: /\bjson\b/
		},

		responseFields: {
			xml: "responseXML",
			text: "responseText",
			json: "responseJSON"
		},

		// Data converters
		// Keys separate source (or catchall "*") and destination types with a single space
		converters: {

			// Convert anything to text
			"* text": String,

			// Text to html (true = no transformation)
			"text html": true,

			// Evaluate text as a json expression
			"text json": JSON.parse,

			// Parse text as xml
			"text xml": jQuery.parseXML
		},

		// For options that shouldn't be deep extended:
		// you can add your own custom options here if
		// and when you create one that shouldn't be
		// deep extended (see ajaxExtend)
		flatOptions: {
			url: true,
			context: true
		}
	},

	// Creates a full fledged settings object into target
	// with both ajaxSettings and settings fields.
	// If target is omitted, writes into ajaxSettings.
	ajaxSetup: function( target, settings ) {
		return settings ?

			// Building a settings object
			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :

			// Extending ajaxSettings
			ajaxExtend( jQuery.ajaxSettings, target );
	},

	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
	ajaxTransport: addToPrefiltersOrTransports( transports ),

	// Main method
	ajax: function( url, options ) {

		// If url is an object, simulate pre-1.5 signature
		if ( typeof url === "object" ) {
			options = url;
			url = undefined;
		}

		// Force options to be an object
		options = options || {};

		var transport,

			// URL without anti-cache param
			cacheURL,

			// Response headers
			responseHeadersString,
			responseHeaders,

			// timeout handle
			timeoutTimer,

			// Url cleanup var
			urlAnchor,

			// Request state (becomes false upon send and true upon completion)
			completed,

			// To know if global events are to be dispatched
			fireGlobals,

			// Loop variable
			i,

			// uncached part of the url
			uncached,

			// Create the final options object
			s = jQuery.ajaxSetup( {}, options ),

			// Callbacks context
			callbackContext = s.context || s,

			// Context for global events is callbackContext if it is a DOM node or jQuery collection
			globalEventContext = s.context &&
				( callbackContext.nodeType || callbackContext.jquery ) ?
					jQuery( callbackContext ) :
					jQuery.event,

			// Deferreds
			deferred = jQuery.Deferred(),
			completeDeferred = jQuery.Callbacks( "once memory" ),

			// Status-dependent callbacks
			statusCode = s.statusCode || {},

			// Headers (they are sent all at once)
			requestHeaders = {},
			requestHeadersNames = {},

			// Default abort message
			strAbort = "canceled",

			// Fake xhr
			jqXHR = {
				readyState: 0,

				// Builds headers hashtable if needed
				getResponseHeader: function( key ) {
					var match;
					if ( completed ) {
						if ( !responseHeaders ) {
							responseHeaders = {};
							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
								responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
							}
						}
						match = responseHeaders[ key.toLowerCase() ];
					}
					return match == null ? null : match;
				},

				// Raw string
				getAllResponseHeaders: function() {
					return completed ? responseHeadersString : null;
				},

				// Caches the header
				setRequestHeader: function( name, value ) {
					if ( completed == null ) {
						name = requestHeadersNames[ name.toLowerCase() ] =
							requestHeadersNames[ name.toLowerCase() ] || name;
						requestHeaders[ name ] = value;
					}
					return this;
				},

				// Overrides response content-type header
				overrideMimeType: function( type ) {
					if ( completed == null ) {
						s.mimeType = type;
					}
					return this;
				},

				// Status-dependent callbacks
				statusCode: function( map ) {
					var code;
					if ( map ) {
						if ( completed ) {

							// Execute the appropriate callbacks
							jqXHR.always( map[ jqXHR.status ] );
						} else {

							// Lazy-add the new callbacks in a way that preserves old ones
							for ( code in map ) {
								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
							}
						}
					}
					return this;
				},

				// Cancel the request
				abort: function( statusText ) {
					var finalText = statusText || strAbort;
					if ( transport ) {
						transport.abort( finalText );
					}
					done( 0, finalText );
					return this;
				}
			};

		// Attach deferreds
		deferred.promise( jqXHR );

		// Add protocol if not provided (prefilters might expect it)
		// Handle falsy url in the settings object (#10093: consistency with old signature)
		// We also use the url parameter if available
		s.url = ( ( url || s.url || location.href ) + "" )
			.replace( rprotocol, location.protocol + "//" );

		// Alias method option to type as per ticket #12004
		s.type = options.method || options.type || s.method || s.type;

		// Extract dataTypes list
		s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ];

		// A cross-domain request is in order when the origin doesn't match the current origin.
		if ( s.crossDomain == null ) {
			urlAnchor = document.createElement( "a" );

			// Support: IE <=8 - 11, Edge 12 - 15
			// IE throws exception on accessing the href property if url is malformed,
			// e.g. http://example.com:80x/
			try {
				urlAnchor.href = s.url;

				// Support: IE <=8 - 11 only
				// Anchor's host property isn't correctly set when s.url is relative
				urlAnchor.href = urlAnchor.href;
				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
					urlAnchor.protocol + "//" + urlAnchor.host;
			} catch ( e ) {

				// If there is an error parsing the URL, assume it is crossDomain,
				// it can be rejected by the transport if it is invalid
				s.crossDomain = true;
			}
		}

		// Convert data if not already a string
		if ( s.data && s.processData && typeof s.data !== "string" ) {
			s.data = jQuery.param( s.data, s.traditional );
		}

		// Apply prefilters
		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );

		// If request was aborted inside a prefilter, stop there
		if ( completed ) {
			return jqXHR;
		}

		// We can fire global events as of now if asked to
		// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
		fireGlobals = jQuery.event && s.global;

		// Watch for a new set of requests
		if ( fireGlobals && jQuery.active++ === 0 ) {
			jQuery.event.trigger( "ajaxStart" );
		}

		// Uppercase the type
		s.type = s.type.toUpperCase();

		// Determine if request has content
		s.hasContent = !rnoContent.test( s.type );

		// Save the URL in case we're toying with the If-Modified-Since
		// and/or If-None-Match header later on
		// Remove hash to simplify url manipulation
		cacheURL = s.url.replace( rhash, "" );

		// More options handling for requests with no content
		if ( !s.hasContent ) {

			// Remember the hash so we can put it back
			uncached = s.url.slice( cacheURL.length );

			// If data is available and should be processed, append data to url
			if ( s.data && ( s.processData || typeof s.data === "string" ) ) {
				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;

				// #9682: remove data so that it's not used in an eventual retry
				delete s.data;
			}

			// Add or update anti-cache param if needed
			if ( s.cache === false ) {
				cacheURL = cacheURL.replace( rantiCache, "$1" );
				uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce++ ) + uncached;
			}

			// Put hash and anti-cache on the URL that will be requested (gh-1732)
			s.url = cacheURL + uncached;

		// Change '%20' to '+' if this is encoded form body content (gh-2658)
		} else if ( s.data && s.processData &&
			( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) {
			s.data = s.data.replace( r20, "+" );
		}

		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
		if ( s.ifModified ) {
			if ( jQuery.lastModified[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
			}
			if ( jQuery.etag[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
			}
		}

		// Set the correct header, if data is being sent
		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
			jqXHR.setRequestHeader( "Content-Type", s.contentType );
		}

		// Set the Accepts header for the server, depending on the dataType
		jqXHR.setRequestHeader(
			"Accept",
			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
				s.accepts[ s.dataTypes[ 0 ] ] +
					( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
				s.accepts[ "*" ]
		);

		// Check for headers option
		for ( i in s.headers ) {
			jqXHR.setRequestHeader( i, s.headers[ i ] );
		}

		// Allow custom headers/mimetypes and early abort
		if ( s.beforeSend &&
			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {

			// Abort if not done already and return
			return jqXHR.abort();
		}

		// Aborting is no longer a cancellation
		strAbort = "abort";

		// Install callbacks on deferreds
		completeDeferred.add( s.complete );
		jqXHR.done( s.success );
		jqXHR.fail( s.error );

		// Get transport
		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );

		// If no transport, we auto-abort
		if ( !transport ) {
			done( -1, "No Transport" );
		} else {
			jqXHR.readyState = 1;

			// Send global event
			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
			}

			// If request was aborted inside ajaxSend, stop there
			if ( completed ) {
				return jqXHR;
			}

			// Timeout
			if ( s.async && s.timeout > 0 ) {
				timeoutTimer = window.setTimeout( function() {
					jqXHR.abort( "timeout" );
				}, s.timeout );
			}

			try {
				completed = false;
				transport.send( requestHeaders, done );
			} catch ( e ) {

				// Rethrow post-completion exceptions
				if ( completed ) {
					throw e;
				}

				// Propagate others as results
				done( -1, e );
			}
		}

		// Callback for when everything is done
		function done( status, nativeStatusText, responses, headers ) {
			var isSuccess, success, error, response, modified,
				statusText = nativeStatusText;

			// Ignore repeat invocations
			if ( completed ) {
				return;
			}

			completed = true;

			// Clear timeout if it exists
			if ( timeoutTimer ) {
				window.clearTimeout( timeoutTimer );
			}

			// Dereference transport for early garbage collection
			// (no matter how long the jqXHR object will be used)
			transport = undefined;

			// Cache response headers
			responseHeadersString = headers || "";

			// Set readyState
			jqXHR.readyState = status > 0 ? 4 : 0;

			// Determine if successful
			isSuccess = status >= 200 && status < 300 || status === 304;

			// Get response data
			if ( responses ) {
				response = ajaxHandleResponses( s, jqXHR, responses );
			}

			// Convert no matter what (that way responseXXX fields are always set)
			response = ajaxConvert( s, response, jqXHR, isSuccess );

			// If successful, handle type chaining
			if ( isSuccess ) {

				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
				if ( s.ifModified ) {
					modified = jqXHR.getResponseHeader( "Last-Modified" );
					if ( modified ) {
						jQuery.lastModified[ cacheURL ] = modified;
					}
					modified = jqXHR.getResponseHeader( "etag" );
					if ( modified ) {
						jQuery.etag[ cacheURL ] = modified;
					}
				}

				// if no content
				if ( status === 204 || s.type === "HEAD" ) {
					statusText = "nocontent";

				// if not modified
				} else if ( status === 304 ) {
					statusText = "notmodified";

				// If we have data, let's convert it
				} else {
					statusText = response.state;
					success = response.data;
					error = response.error;
					isSuccess = !error;
				}
			} else {

				// Extract error from statusText and normalize for non-aborts
				error = statusText;
				if ( status || !statusText ) {
					statusText = "error";
					if ( status < 0 ) {
						status = 0;
					}
				}
			}

			// Set data for the fake xhr object
			jqXHR.status = status;
			jqXHR.statusText = ( nativeStatusText || statusText ) + "";

			// Success/Error
			if ( isSuccess ) {
				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
			} else {
				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
			}

			// Status-dependent callbacks
			jqXHR.statusCode( statusCode );
			statusCode = undefined;

			if ( fireGlobals ) {
				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
					[ jqXHR, s, isSuccess ? success : error ] );
			}

			// Complete
			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );

			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );

				// Handle the global AJAX counter
				if ( !( --jQuery.active ) ) {
					jQuery.event.trigger( "ajaxStop" );
				}
			}
		}

		return jqXHR;
	},

	getJSON: function( url, data, callback ) {
		return jQuery.get( url, data, callback, "json" );
	},

	getScript: function( url, callback ) {
		return jQuery.get( url, undefined, callback, "script" );
	}
} );

jQuery.each( [ "get", "post" ], function( i, method ) {
	jQuery[ method ] = function( url, data, callback, type ) {

		// Shift arguments if data argument was omitted
		if ( isFunction( data ) ) {
			type = type || callback;
			callback = data;
			data = undefined;
		}

		// The url can be an options object (which then must have .url)
		return jQuery.ajax( jQuery.extend( {
			url: url,
			type: method,
			dataType: type,
			data: data,
			success: callback
		}, jQuery.isPlainObject( url ) && url ) );
	};
} );


jQuery._evalUrl = function( url ) {
	return jQuery.ajax( {
		url: url,

		// Make this explicit, since user can override this through ajaxSetup (#11264)
		type: "GET",
		dataType: "script",
		cache: true,
		async: false,
		global: false,
		"throws": true
	} );
};


jQuery.fn.extend( {
	wrapAll: function( html ) {
		var wrap;

		if ( this[ 0 ] ) {
			if ( isFunction( html ) ) {
				html = html.call( this[ 0 ] );
			}

			// The elements to wrap the target around
			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );

			if ( this[ 0 ].parentNode ) {
				wrap.insertBefore( this[ 0 ] );
			}

			wrap.map( function() {
				var elem = this;

				while ( elem.firstElementChild ) {
					elem = elem.firstElementChild;
				}

				return elem;
			} ).append( this );
		}

		return this;
	},

	wrapInner: function( html ) {
		if ( isFunction( html ) ) {
			return this.each( function( i ) {
				jQuery( this ).wrapInner( html.call( this, i ) );
			} );
		}

		return this.each( function() {
			var self = jQuery( this ),
				contents = self.contents();

			if ( contents.length ) {
				contents.wrapAll( html );

			} else {
				self.append( html );
			}
		} );
	},

	wrap: function( html ) {
		var htmlIsFunction = isFunction( html );

		return this.each( function( i ) {
			jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );
		} );
	},

	unwrap: function( selector ) {
		this.parent( selector ).not( "body" ).each( function() {
			jQuery( this ).replaceWith( this.childNodes );
		} );
		return this;
	}
} );


jQuery.expr.pseudos.hidden = function( elem ) {
	return !jQuery.expr.pseudos.visible( elem );
};
jQuery.expr.pseudos.visible = function( elem ) {
	return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
};




jQuery.ajaxSettings.xhr = function() {
	try {
		return new window.XMLHttpRequest();
	} catch ( e ) {}
};

var xhrSuccessStatus = {

		// File protocol always yields status code 0, assume 200
		0: 200,

		// Support: IE <=9 only
		// #1450: sometimes IE returns 1223 when it should be 204
		1223: 204
	},
	xhrSupported = jQuery.ajaxSettings.xhr();

support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
support.ajax = xhrSupported = !!xhrSupported;

jQuery.ajaxTransport( function( options ) {
	var callback, errorCallback;

	// Cross domain only allowed if supported through XMLHttpRequest
	if ( support.cors || xhrSupported && !options.crossDomain ) {
		return {
			send: function( headers, complete ) {
				var i,
					xhr = options.xhr();

				xhr.open(
					options.type,
					options.url,
					options.async,
					options.username,
					options.password
				);

				// Apply custom fields if provided
				if ( options.xhrFields ) {
					for ( i in options.xhrFields ) {
						xhr[ i ] = options.xhrFields[ i ];
					}
				}

				// Override mime type if needed
				if ( options.mimeType && xhr.overrideMimeType ) {
					xhr.overrideMimeType( options.mimeType );
				}

				// X-Requested-With header
				// For cross-domain requests, seeing as conditions for a preflight are
				// akin to a jigsaw puzzle, we simply never set it to be sure.
				// (it can always be set on a per-request basis or even using ajaxSetup)
				// For same-domain requests, won't change header if already provided.
				if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
					headers[ "X-Requested-With" ] = "XMLHttpRequest";
				}

				// Set headers
				for ( i in headers ) {
					xhr.setRequestHeader( i, headers[ i ] );
				}

				// Callback
				callback = function( type ) {
					return function() {
						if ( callback ) {
							callback = errorCallback = xhr.onload =
								xhr.onerror = xhr.onabort = xhr.ontimeout =
									xhr.onreadystatechange = null;

							if ( type === "abort" ) {
								xhr.abort();
							} else if ( type === "error" ) {

								// Support: IE <=9 only
								// On a manual native abort, IE9 throws
								// errors on any property access that is not readyState
								if ( typeof xhr.status !== "number" ) {
									complete( 0, "error" );
								} else {
									complete(

										// File: protocol always yields status 0; see #8605, #14207
										xhr.status,
										xhr.statusText
									);
								}
							} else {
								complete(
									xhrSuccessStatus[ xhr.status ] || xhr.status,
									xhr.statusText,

									// Support: IE <=9 only
									// IE9 has no XHR2 but throws on binary (trac-11426)
									// For XHR2 non-text, let the caller handle it (gh-2498)
									( xhr.responseType || "text" ) !== "text"  ||
									typeof xhr.responseText !== "string" ?
										{ binary: xhr.response } :
										{ text: xhr.responseText },
									xhr.getAllResponseHeaders()
								);
							}
						}
					};
				};

				// Listen to events
				xhr.onload = callback();
				errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" );

				// Support: IE 9 only
				// Use onreadystatechange to replace onabort
				// to handle uncaught aborts
				if ( xhr.onabort !== undefined ) {
					xhr.onabort = errorCallback;
				} else {
					xhr.onreadystatechange = function() {

						// Check readyState before timeout as it changes
						if ( xhr.readyState === 4 ) {

							// Allow onerror to be called first,
							// but that will not handle a native abort
							// Also, save errorCallback to a variable
							// as xhr.onerror cannot be accessed
							window.setTimeout( function() {
								if ( callback ) {
									errorCallback();
								}
							} );
						}
					};
				}

				// Create the abort callback
				callback = callback( "abort" );

				try {

					// Do send the request (this may raise an exception)
					xhr.send( options.hasContent && options.data || null );
				} catch ( e ) {

					// #14683: Only rethrow if this hasn't been notified as an error yet
					if ( callback ) {
						throw e;
					}
				}
			},

			abort: function() {
				if ( callback ) {
					callback();
				}
			}
		};
	}
} );




// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
jQuery.ajaxPrefilter( function( s ) {
	if ( s.crossDomain ) {
		s.contents.script = false;
	}
} );

// Install script dataType
jQuery.ajaxSetup( {
	accepts: {
		script: "text/javascript, application/javascript, " +
			"application/ecmascript, application/x-ecmascript"
	},
	contents: {
		script: /\b(?:java|ecma)script\b/
	},
	converters: {
		"text script": function( text ) {
			jQuery.globalEval( text );
			return text;
		}
	}
} );

// Handle cache's special case and crossDomain
jQuery.ajaxPrefilter( "script", function( s ) {
	if ( s.cache === undefined ) {
		s.cache = false;
	}
	if ( s.crossDomain ) {
		s.type = "GET";
	}
} );

// Bind script tag hack transport
jQuery.ajaxTransport( "script", function( s ) {

	// This transport only deals with cross domain requests
	if ( s.crossDomain ) {
		var script, callback;
		return {
			send: function( _, complete ) {
				script = jQuery( "<script>" ).prop( {
					charset: s.scriptCharset,
					src: s.url
				} ).on(
					"load error",
					callback = function( evt ) {
						script.remove();
						callback = null;
						if ( evt ) {
							complete( evt.type === "error" ? 404 : 200, evt.type );
						}
					}
				);

				// Use native DOM manipulation to avoid our domManip AJAX trickery
				document.head.appendChild( script[ 0 ] );
			},
			abort: function() {
				if ( callback ) {
					callback();
				}
			}
		};
	}
} );




var oldCallbacks = [],
	rjsonp = /(=)\?(?=&|$)|\?\?/;

// Default jsonp settings
jQuery.ajaxSetup( {
	jsonp: "callback",
	jsonpCallback: function() {
		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
		this[ callback ] = true;
		return callback;
	}
} );

// Detect, normalize options and install callbacks for jsonp requests
jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {

	var callbackName, overwritten, responseContainer,
		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
			"url" :
			typeof s.data === "string" &&
				( s.contentType || "" )
					.indexOf( "application/x-www-form-urlencoded" ) === 0 &&
				rjsonp.test( s.data ) && "data"
		);

	// Handle iff the expected data type is "jsonp" or we have a parameter to set
	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {

		// Get callback name, remembering preexisting value associated with it
		callbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ?
			s.jsonpCallback() :
			s.jsonpCallback;

		// Insert callback into url or form data
		if ( jsonProp ) {
			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
		} else if ( s.jsonp !== false ) {
			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
		}

		// Use data converter to retrieve json after script execution
		s.converters[ "script json" ] = function() {
			if ( !responseContainer ) {
				jQuery.error( callbackName + " was not called" );
			}
			return responseContainer[ 0 ];
		};

		// Force json dataType
		s.dataTypes[ 0 ] = "json";

		// Install callback
		overwritten = window[ callbackName ];
		window[ callbackName ] = function() {
			responseContainer = arguments;
		};

		// Clean-up function (fires after converters)
		jqXHR.always( function() {

			// If previous value didn't exist - remove it
			if ( overwritten === undefined ) {
				jQuery( window ).removeProp( callbackName );

			// Otherwise restore preexisting value
			} else {
				window[ callbackName ] = overwritten;
			}

			// Save back as free
			if ( s[ callbackName ] ) {

				// Make sure that re-using the options doesn't screw things around
				s.jsonpCallback = originalSettings.jsonpCallback;

				// Save the callback name for future use
				oldCallbacks.push( callbackName );
			}

			// Call if it was a function and we have a response
			if ( responseContainer && isFunction( overwritten ) ) {
				overwritten( responseContainer[ 0 ] );
			}

			responseContainer = overwritten = undefined;
		} );

		// Delegate to script
		return "script";
	}
} );




// Support: Safari 8 only
// In Safari 8 documents created via document.implementation.createHTMLDocument
// collapse sibling forms: the second one becomes a child of the first one.
// Because of that, this security measure has to be disabled in Safari 8.
// https://bugs.webkit.org/show_bug.cgi?id=137337
support.createHTMLDocument = ( function() {
	var body = document.implementation.createHTMLDocument( "" ).body;
	body.innerHTML = "<form></form><form></form>";
	return body.childNodes.length === 2;
} )();


// Argument "data" should be string of html
// context (optional): If specified, the fragment will be created in this context,
// defaults to document
// keepScripts (optional): If true, will include scripts passed in the html string
jQuery.parseHTML = function( data, context, keepScripts ) {
	if ( typeof data !== "string" ) {
		return [];
	}
	if ( typeof context === "boolean" ) {
		keepScripts = context;
		context = false;
	}

	var base, parsed, scripts;

	if ( !context ) {

		// Stop scripts or inline event handlers from being executed immediately
		// by using document.implementation
		if ( support.createHTMLDocument ) {
			context = document.implementation.createHTMLDocument( "" );

			// Set the base href for the created document
			// so any parsed elements with URLs
			// are based on the document's URL (gh-2965)
			base = context.createElement( "base" );
			base.href = document.location.href;
			context.head.appendChild( base );
		} else {
			context = document;
		}
	}

	parsed = rsingleTag.exec( data );
	scripts = !keepScripts && [];

	// Single tag
	if ( parsed ) {
		return [ context.createElement( parsed[ 1 ] ) ];
	}

	parsed = buildFragment( [ data ], context, scripts );

	if ( scripts && scripts.length ) {
		jQuery( scripts ).remove();
	}

	return jQuery.merge( [], parsed.childNodes );
};


/**
 * Load a url into a page
 */
jQuery.fn.load = function( url, params, callback ) {
	var selector, type, response,
		self = this,
		off = url.indexOf( " " );

	if ( off > -1 ) {
		selector = stripAndCollapse( url.slice( off ) );
		url = url.slice( 0, off );
	}

	// If it's a function
	if ( isFunction( params ) ) {

		// We assume that it's the callback
		callback = params;
		params = undefined;

	// Otherwise, build a param string
	} else if ( params && typeof params === "object" ) {
		type = "POST";
	}

	// If we have elements to modify, make the request
	if ( self.length > 0 ) {
		jQuery.ajax( {
			url: url,

			// If "type" variable is undefined, then "GET" method will be used.
			// Make value of this field explicit since
			// user can override it through ajaxSetup method
			type: type || "GET",
			dataType: "html",
			data: params
		} ).done( function( responseText ) {

			// Save response for use in complete callback
			response = arguments;

			self.html( selector ?

				// If a selector was specified, locate the right elements in a dummy div
				// Exclude scripts to avoid IE 'Permission Denied' errors
				jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :

				// Otherwise use the full result
				responseText );

		// If the request succeeds, this function gets "data", "status", "jqXHR"
		// but they are ignored because response was set above.
		// If it fails, this function gets "jqXHR", "status", "error"
		} ).always( callback && function( jqXHR, status ) {
			self.each( function() {
				callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
			} );
		} );
	}

	return this;
};




// Attach a bunch of functions for handling common AJAX events
jQuery.each( [
	"ajaxStart",
	"ajaxStop",
	"ajaxComplete",
	"ajaxError",
	"ajaxSuccess",
	"ajaxSend"
], function( i, type ) {
	jQuery.fn[ type ] = function( fn ) {
		return this.on( type, fn );
	};
} );




jQuery.expr.pseudos.animated = function( elem ) {
	return jQuery.grep( jQuery.timers, function( fn ) {
		return elem === fn.elem;
	} ).length;
};




jQuery.offset = {
	setOffset: function( elem, options, i ) {
		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
			position = jQuery.css( elem, "position" ),
			curElem = jQuery( elem ),
			props = {};

		// Set position first, in-case top/left are set even on static elem
		if ( position === "static" ) {
			elem.style.position = "relative";
		}

		curOffset = curElem.offset();
		curCSSTop = jQuery.css( elem, "top" );
		curCSSLeft = jQuery.css( elem, "left" );
		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
			( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;

		// Need to be able to calculate position if either
		// top or left is auto and position is either absolute or fixed
		if ( calculatePosition ) {
			curPosition = curElem.position();
			curTop = curPosition.top;
			curLeft = curPosition.left;

		} else {
			curTop = parseFloat( curCSSTop ) || 0;
			curLeft = parseFloat( curCSSLeft ) || 0;
		}

		if ( isFunction( options ) ) {

			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
		}

		if ( options.top != null ) {
			props.top = ( options.top - curOffset.top ) + curTop;
		}
		if ( options.left != null ) {
			props.left = ( options.left - curOffset.left ) + curLeft;
		}

		if ( "using" in options ) {
			options.using.call( elem, props );

		} else {
			curElem.css( props );
		}
	}
};

jQuery.fn.extend( {

	// offset() relates an element's border box to the document origin
	offset: function( options ) {

		// Preserve chaining for setter
		if ( arguments.length ) {
			return options === undefined ?
				this :
				this.each( function( i ) {
					jQuery.offset.setOffset( this, options, i );
				} );
		}

		var rect, win,
			elem = this[ 0 ];

		if ( !elem ) {
			return;
		}

		// Return zeros for disconnected and hidden (display: none) elements (gh-2310)
		// Support: IE <=11 only
		// Running getBoundingClientRect on a
		// disconnected node in IE throws an error
		if ( !elem.getClientRects().length ) {
			return { top: 0, left: 0 };
		}

		// Get document-relative position by adding viewport scroll to viewport-relative gBCR
		rect = elem.getBoundingClientRect();
		win = elem.ownerDocument.defaultView;
		return {
			top: rect.top + win.pageYOffset,
			left: rect.left + win.pageXOffset
		};
	},

	// position() relates an element's margin box to its offset parent's padding box
	// This corresponds to the behavior of CSS absolute positioning
	position: function() {
		if ( !this[ 0 ] ) {
			return;
		}

		var offsetParent, offset, doc,
			elem = this[ 0 ],
			parentOffset = { top: 0, left: 0 };

		// position:fixed elements are offset from the viewport, which itself always has zero offset
		if ( jQuery.css( elem, "position" ) === "fixed" ) {

			// Assume position:fixed implies availability of getBoundingClientRect
			offset = elem.getBoundingClientRect();

		} else {
			offset = this.offset();

			// Account for the *real* offset parent, which can be the document or its root element
			// when a statically positioned element is identified
			doc = elem.ownerDocument;
			offsetParent = elem.offsetParent || doc.documentElement;
			while ( offsetParent &&
				( offsetParent === doc.body || offsetParent === doc.documentElement ) &&
				jQuery.css( offsetParent, "position" ) === "static" ) {

				offsetParent = offsetParent.parentNode;
			}
			if ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) {

				// Incorporate borders into its offset, since they are outside its content origin
				parentOffset = jQuery( offsetParent ).offset();
				parentOffset.top += jQuery.css( offsetParent, "borderTopWidth", true );
				parentOffset.left += jQuery.css( offsetParent, "borderLeftWidth", true );
			}
		}

		// Subtract parent offsets and element margins
		return {
			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
		};
	},

	// This method will return documentElement in the following cases:
	// 1) For the element inside the iframe without offsetParent, this method will return
	//    documentElement of the parent window
	// 2) For the hidden or detached element
	// 3) For body or html element, i.e. in case of the html node - it will return itself
	//
	// but those exceptions were never presented as a real life use-cases
	// and might be considered as more preferable results.
	//
	// This logic, however, is not guaranteed and can change at any point in the future
	offsetParent: function() {
		return this.map( function() {
			var offsetParent = this.offsetParent;

			while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
				offsetParent = offsetParent.offsetParent;
			}

			return offsetParent || documentElement;
		} );
	}
} );

// Create scrollLeft and scrollTop methods
jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
	var top = "pageYOffset" === prop;

	jQuery.fn[ method ] = function( val ) {
		return access( this, function( elem, method, val ) {

			// Coalesce documents and windows
			var win;
			if ( isWindow( elem ) ) {
				win = elem;
			} else if ( elem.nodeType === 9 ) {
				win = elem.defaultView;
			}

			if ( val === undefined ) {
				return win ? win[ prop ] : elem[ method ];
			}

			if ( win ) {
				win.scrollTo(
					!top ? val : win.pageXOffset,
					top ? val : win.pageYOffset
				);

			} else {
				elem[ method ] = val;
			}
		}, method, val, arguments.length );
	};
} );

// Support: Safari <=7 - 9.1, Chrome <=37 - 49
// Add the top/left cssHooks using jQuery.fn.position
// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
// getComputedStyle returns percent when specified for top/left/bottom/right;
// rather than make the css module depend on the offset module, just check for it here
jQuery.each( [ "top", "left" ], function( i, prop ) {
	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
		function( elem, computed ) {
			if ( computed ) {
				computed = curCSS( elem, prop );

				// If curCSS returns percentage, fallback to offset
				return rnumnonpx.test( computed ) ?
					jQuery( elem ).position()[ prop ] + "px" :
					computed;
			}
		}
	);
} );


// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
		function( defaultExtra, funcName ) {

		// Margin is only for outerHeight, outerWidth
		jQuery.fn[ funcName ] = function( margin, value ) {
			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );

			return access( this, function( elem, type, value ) {
				var doc;

				if ( isWindow( elem ) ) {

					// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
					return funcName.indexOf( "outer" ) === 0 ?
						elem[ "inner" + name ] :
						elem.document.documentElement[ "client" + name ];
				}

				// Get document width or height
				if ( elem.nodeType === 9 ) {
					doc = elem.documentElement;

					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
					// whichever is greatest
					return Math.max(
						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
						elem.body[ "offset" + name ], doc[ "offset" + name ],
						doc[ "client" + name ]
					);
				}

				return value === undefined ?

					// Get width or height on the element, requesting but not forcing parseFloat
					jQuery.css( elem, type, extra ) :

					// Set width or height on the element
					jQuery.style( elem, type, value, extra );
			}, type, chainable ? margin : undefined, chainable );
		};
	} );
} );


jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
	function( i, name ) {

	// Handle event binding
	jQuery.fn[ name ] = function( data, fn ) {
		return arguments.length > 0 ?
			this.on( name, null, data, fn ) :
			this.trigger( name );
	};
} );

jQuery.fn.extend( {
	hover: function( fnOver, fnOut ) {
		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
	}
} );




jQuery.fn.extend( {

	bind: function( types, data, fn ) {
		return this.on( types, null, data, fn );
	},
	unbind: function( types, fn ) {
		return this.off( types, null, fn );
	},

	delegate: function( selector, types, data, fn ) {
		return this.on( types, selector, data, fn );
	},
	undelegate: function( selector, types, fn ) {

		// ( namespace ) or ( selector, types [, fn] )
		return arguments.length === 1 ?
			this.off( selector, "**" ) :
			this.off( types, selector || "**", fn );
	}
} );

// Bind a function to a context, optionally partially applying any
// arguments.
// jQuery.proxy is deprecated to promote standards (specifically Function#bind)
// However, it is not slated for removal any time soon
jQuery.proxy = function( fn, context ) {
	var tmp, args, proxy;

	if ( typeof context === "string" ) {
		tmp = fn[ context ];
		context = fn;
		fn = tmp;
	}

	// Quick check to determine if target is callable, in the spec
	// this throws a TypeError, but we will just return undefined.
	if ( !isFunction( fn ) ) {
		return undefined;
	}

	// Simulated bind
	args = slice.call( arguments, 2 );
	proxy = function() {
		return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
	};

	// Set the guid of unique handler to the same of original handler, so it can be removed
	proxy.guid = fn.guid = fn.guid || jQuery.guid++;

	return proxy;
};

jQuery.holdReady = function( hold ) {
	if ( hold ) {
		jQuery.readyWait++;
	} else {
		jQuery.ready( true );
	}
};
jQuery.isArray = Array.isArray;
jQuery.parseJSON = JSON.parse;
jQuery.nodeName = nodeName;
jQuery.isFunction = isFunction;
jQuery.isWindow = isWindow;
jQuery.camelCase = camelCase;
jQuery.type = toType;

jQuery.now = Date.now;

jQuery.isNumeric = function( obj ) {

	// As of jQuery 3.0, isNumeric is limited to
	// strings and numbers (primitives or objects)
	// that can be coerced to finite numbers (gh-2662)
	var type = jQuery.type( obj );
	return ( type === "number" || type === "string" ) &&

		// parseFloat NaNs numeric-cast false positives ("")
		// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
		// subtraction forces infinities to NaN
		!isNaN( obj - parseFloat( obj ) );
};




// Register as a named AMD module, since jQuery can be concatenated with other
// files that may use define, but not via a proper concatenation script that
// understands anonymous AMD modules. A named AMD is safest and most robust
// way to register. Lowercase jquery is used because AMD module names are
// derived from file names, and jQuery is normally delivered in a lowercase
// file name. Do this after creating the global so that if an AMD module wants
// to call noConflict to hide this version of jQuery, it will work.

// Note that for maximum portability, libraries that are not jQuery should
// declare themselves as anonymous modules, and avoid setting a global if an
// AMD loader is present. jQuery is a special case. For more information, see
// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon

if ( typeof define === "function" && define.amd ) {
	define( "jquery", [], function() {
		return jQuery;
	} );
}




var

	// Map over jQuery in case of overwrite
	_jQuery = window.jQuery,

	// Map over the $ in case of overwrite
	_$ = window.$;

jQuery.noConflict = function( deep ) {
	if ( window.$ === jQuery ) {
		window.$ = _$;
	}

	if ( deep && window.jQuery === jQuery ) {
		window.jQuery = _jQuery;
	}

	return jQuery;
};

// Expose jQuery and $ identifiers, even in AMD
// (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
// and CommonJS for browser emulators (#13566)
if ( !noGlobal ) {
	window.jQuery = window.$ = jQuery;
}




return jQuery;
} );

},{}],118:[function(require,module,exports){
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global.parseSRT = factory());
}(this, (function () { 'use strict';

/**
 * @name parseSRT
 * @desc Parses and converts SRT subtitle data into JSON format. Adapted from the popcorn.js SRT parser plugin.
 * @see http://popcornjs.org/
 * @author Luis Rodrigues (http://www.luisrodriguesweb.com)
 * @version 1.0.0-alpha
 * @license MIT
 */

function toSeconds(time) {
  var t = time.split(':');

  try {
    var s = t[2].split(',');

    if (s.length === 1) {
      s = t[2].split('.');
    }

    return parseFloat(t[0], 10) * 3600 + parseFloat(t[1], 10) * 60 + parseFloat(s[0], 10) + parseFloat(s[1], 10) / 1000;
  } catch (e) {
    return 0;
  }
}

function nextNonEmptyLine(linesArray, position) {
  var idx = position;

  while (!linesArray[idx]) {
    idx++;
  }

  return idx;
}

function lastNonEmptyLine(linesArray) {
  var idx = linesArray.length - 1;

  while (idx >= 0 && !linesArray[idx]) {
    idx--;
  }

  return idx;
}

function parseSRT() {
  var data = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';

  var subs = [];
  var lines = data.split(/(?:\r\n|\r|\n)/gm);
  var endIdx = lastNonEmptyLine(lines) + 1;
  var idx = 0;
  var time = void 0;
  var text = void 0;
  var sub = void 0;

  for (var i = 0; i < endIdx; i++) {
    sub = {};
    text = [];

    i = nextNonEmptyLine(lines, i);
    sub.id = parseInt(lines[i++], 10);

    time = lines[i++].split(/[\t ]*-->[\t ]*/);

    sub.start = toSeconds(time[0]);

    idx = time[1].indexOf(' ');
    if (idx !== -1) {
      time[1] = time[1].substr(0, idx);
    }
    sub.end = toSeconds(time[1]);

    while (i < endIdx && lines[i]) {
      text.push(lines[i++]);
    }

    sub.text = text.join('\\N').replace(/\{(\\[\w]+\(?([\w\d]+,?)+\)?)+\}/gi, '');

    sub.text = sub.text.replace(/</g, '&lt;').replace(/>/g, '&gt;');

    sub.text = sub.text.replace(/&lt;(\/?(font|b|u|i|s))((\s+(\w|\w[\w\-]*\w)(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)(\/?)&gt;/gi, '<$1$3$7>');
    sub.text = sub.text.replace(/\\N/gi, '<br />');

    subs.push(sub);
  }

  return subs;
}

return parseSRT;

})));


},{}],119:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],120:[function(require,module,exports){
'use strict';

// Store setTimeout reference so promise-polyfill will be unaffected by
// other code modifying setTimeout (like sinon.useFakeTimers())
var setTimeoutFunc = setTimeout;

function noop() {}

// Polyfill for Function.prototype.bind
function bind(fn, thisArg) {
  return function() {
    fn.apply(thisArg, arguments);
  };
}

function Promise(fn) {
  if (!(this instanceof Promise))
    throw new TypeError('Promises must be constructed via new');
  if (typeof fn !== 'function') throw new TypeError('not a function');
  this._state = 0;
  this._handled = false;
  this._value = undefined;
  this._deferreds = [];

  doResolve(fn, this);
}

function handle(self, deferred) {
  while (self._state === 3) {
    self = self._value;
  }
  if (self._state === 0) {
    self._deferreds.push(deferred);
    return;
  }
  self._handled = true;
  Promise._immediateFn(function() {
    var cb = self._state === 1 ? deferred.onFulfilled : deferred.onRejected;
    if (cb === null) {
      (self._state === 1 ? resolve : reject)(deferred.promise, self._value);
      return;
    }
    var ret;
    try {
      ret = cb(self._value);
    } catch (e) {
      reject(deferred.promise, e);
      return;
    }
    resolve(deferred.promise, ret);
  });
}

function resolve(self, newValue) {
  try {
    // Promise Resolution Procedure: https://github.com/promises-aplus/promises-spec#the-promise-resolution-procedure
    if (newValue === self)
      throw new TypeError('A promise cannot be resolved with itself.');
    if (
      newValue &&
      (typeof newValue === 'object' || typeof newValue === 'function')
    ) {
      var then = newValue.then;
      if (newValue instanceof Promise) {
        self._state = 3;
        self._value = newValue;
        finale(self);
        return;
      } else if (typeof then === 'function') {
        doResolve(bind(then, newValue), self);
        return;
      }
    }
    self._state = 1;
    self._value = newValue;
    finale(self);
  } catch (e) {
    reject(self, e);
  }
}

function reject(self, newValue) {
  self._state = 2;
  self._value = newValue;
  finale(self);
}

function finale(self) {
  if (self._state === 2 && self._deferreds.length === 0) {
    Promise._immediateFn(function() {
      if (!self._handled) {
        Promise._unhandledRejectionFn(self._value);
      }
    });
  }

  for (var i = 0, len = self._deferreds.length; i < len; i++) {
    handle(self, self._deferreds[i]);
  }
  self._deferreds = null;
}

function Handler(onFulfilled, onRejected, promise) {
  this.onFulfilled = typeof onFulfilled === 'function' ? onFulfilled : null;
  this.onRejected = typeof onRejected === 'function' ? onRejected : null;
  this.promise = promise;
}

/**
 * Take a potentially misbehaving resolver function and make sure
 * onFulfilled and onRejected are only called once.
 *
 * Makes no guarantees about asynchrony.
 */
function doResolve(fn, self) {
  var done = false;
  try {
    fn(
      function(value) {
        if (done) return;
        done = true;
        resolve(self, value);
      },
      function(reason) {
        if (done) return;
        done = true;
        reject(self, reason);
      }
    );
  } catch (ex) {
    if (done) return;
    done = true;
    reject(self, ex);
  }
}

Promise.prototype['catch'] = function(onRejected) {
  return this.then(null, onRejected);
};

Promise.prototype.then = function(onFulfilled, onRejected) {
  var prom = new this.constructor(noop);

  handle(this, new Handler(onFulfilled, onRejected, prom));
  return prom;
};

Promise.prototype['finally'] = function(callback) {
  var constructor = this.constructor;
  return this.then(
    function(value) {
      return constructor.resolve(callback()).then(function() {
        return value;
      });
    },
    function(reason) {
      return constructor.resolve(callback()).then(function() {
        return constructor.reject(reason);
      });
    }
  );
};

Promise.all = function(arr) {
  return new Promise(function(resolve, reject) {
    if (!arr || typeof arr.length === 'undefined')
      throw new TypeError('Promise.all accepts an array');
    var args = Array.prototype.slice.call(arr);
    if (args.length === 0) return resolve([]);
    var remaining = args.length;

    function res(i, val) {
      try {
        if (val && (typeof val === 'object' || typeof val === 'function')) {
          var then = val.then;
          if (typeof then === 'function') {
            then.call(
              val,
              function(val) {
                res(i, val);
              },
              reject
            );
            return;
          }
        }
        args[i] = val;
        if (--remaining === 0) {
          resolve(args);
        }
      } catch (ex) {
        reject(ex);
      }
    }

    for (var i = 0; i < args.length; i++) {
      res(i, args[i]);
    }
  });
};

Promise.resolve = function(value) {
  if (value && typeof value === 'object' && value.constructor === Promise) {
    return value;
  }

  return new Promise(function(resolve) {
    resolve(value);
  });
};

Promise.reject = function(value) {
  return new Promise(function(resolve, reject) {
    reject(value);
  });
};

Promise.race = function(values) {
  return new Promise(function(resolve, reject) {
    for (var i = 0, len = values.length; i < len; i++) {
      values[i].then(resolve, reject);
    }
  });
};

// Use polyfill for setImmediate for performance gains
Promise._immediateFn =
  (typeof setImmediate === 'function' &&
    function(fn) {
      setImmediate(fn);
    }) ||
  function(fn) {
    setTimeoutFunc(fn, 0);
  };

Promise._unhandledRejectionFn = function _unhandledRejectionFn(err) {
  if (typeof console !== 'undefined' && console) {
    console.warn('Possible Unhandled Promise Rejection:', err); // eslint-disable-line no-console
  }
};

module.exports = Promise;

},{}],121:[function(require,module,exports){
(function (global){
/*! *****************************************************************************
Copyright (c) Microsoft Corporation. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at http://www.apache.org/licenses/LICENSE-2.0

THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABLITY OR NON-INFRINGEMENT.

See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */
/* global global, define, System, Reflect, Promise */
var __extends;
var __assign;
var __rest;
var __decorate;
var __param;
var __metadata;
var __awaiter;
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var __read;
var __spread;
var __await;
var __asyncGenerator;
var __asyncDelegator;
var __asyncValues;
var __makeTemplateObject;
var __importStar;
var __importDefault;
(function (factory) {
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    __importDefault = function (mod) {
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}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],122:[function(require,module,exports){
const dependencies = require('./dependencies')
const StageController = require('./stage')
const VideoController = require('./video')
const SceneController = require('./scene')
const DataController = require('./data')
const SubtitleController = require('./subtitle')
const $ = dependencies.jquery

StageController.registerComponent()
VideoController.registerComponent()

const playing = false;
document.currentScene = SceneController;

$(() => {
    SceneController.initScene()
    SubtitleController.loadSubtitles()

    document.querySelector('a-scene').addEventListener('enter-vr', function () {
        $('#exitBtn').hide();
    });

    document.querySelector('a-scene').addEventListener('enter-vr', function () {
        $('#exitBtn').show();
    });
})

},{"./data":124,"./dependencies":125,"./scene":129,"./stage":132,"./subtitle":133,"./video":136}],123:[function(require,module,exports){
const dependencies = require('./dependencies')
const $ = dependencies.jquery

const AssetsController = {
        addAssetFromURL(url) {
            const id = Math.random().toString(36).substring(5)
            const asset = $(`<a-asset-item id="${id}" src="${url}"></a-asset-item>`)
            $('a-assets').append(asset)
            return id
        },

        removeAssetWithID(id) {
            $(`a-asset-item#${id}`).remove()
        }
}

module.exports = AssetsController
},{"./dependencies":125}],124:[function(require,module,exports){
const dependencies = require('./dependencies')
const GetURLParam = require('get-url-param')
const Firebase = firebase
const Secrets = require('./secrets')

const DataController = {
    intializeFirebase() {
        this.getLectureIDFromURL()
        this.getCourseIDFromURL()
        Firebase.initializeApp(Secrets.firebaseConfig)
        this.database = Firebase.database()
    },

    getLectureIDFromURL() {
        this.lectureID = GetURLParam(window.location.href,'lecture')
    },

    getCourseIDFromURL() {
        this.courseID = GetURLParam(window.location.href,'course')
    },

    getLectureAndTimelineFromFirebase(callback) {
        if(this.lectureID === 'test') {
            const timeline = [{
                id: "abc123",
                lecture: "5678",
                type: "video",
                eventTime: 0,
                resource: 'https://vyden.nyc3.digitaloceanspaces.com/videos/ad8c2091-ff26-4a12-bf64-bf4fe8cd75c5',
            },
            // {
            //     id: "abc123",
            //     lecture: "5678",
            //     type: "quiz",
            //     eventTime: 10000,
            //     quizTime: 10000,
            //     resource: 'test',
            // },
            {
                id: "abc123",
                lecture: "5678",
                type: "model",
                eventTime: 5000,
                scale: 0.05,
                angleX: 90,
                offsetY: 5,
                duration: 10,
                resource: 'https://vyden.nyc3.digitaloceanspaces.com/models/knuckles/scene.gltf',
            },
            {
                id: "abc123",
                lecture: "5678",
                type: "video",
                eventTime: 7000,
                resource: 'https://vyden.nyc3.digitaloceanspaces.com/videos/ad8c2091-ff26-4a12-bf64-bf4fe8cd75c5',
            }]

            return callback(timeline)
        }
        this.database.ref('/Courses/' + this.courseID + '/lectures/' + this.lectureID).once('value').then(function(snapshot) {
            const lecture = snapshot.val()
            let timeline = []
            Object.keys(lecture.timeline).forEach((key) => {
                lecture.timeline[key].eventTime *= 1000
                timeline.push(lecture.timeline[key])
            })
            callback(timeline,lecture)
        })
    },

    getQuizFromTimelineItem(timelineItem,callback) {
        if(timelineItem.resource === 'test') {
            //return fake quiz
            return callback({
                question: "Is JavaScript a good language?",
                answers: ["Yes", "No"],
                time: 10000
            })
        }
        this.database.ref('/Courses/' + this.courseID + '/quizzes/' + timelineItem.resource + '/').once('value').then(function(snapshot) {
            console.log("the quiz id:",timelineItem.resource)
            const quiz = snapshot.val()
            quiz.time = parseInt(quiz.time) * 1000
            console.log("about to send quiz",quiz)
            callback(quiz)
        })
    },

    submitAnswerForQuiz(quizID,answer) {
        const responseID = this.database.ref('Courses/' + this.courseID +'/lectures/lectureQuizResponses/' + this.lectureID).push().key
        console.log("this database",this.database)
        this.database.ref('Courses/' + this.courseID + '/lectureQuizResponses/' + this.lectureID + '/' + responseID).set({
            selection: answer,
            date: Date.now(),
            quiz: quizID,
            user: Firebase.auth().currentUser.uid,
            lecture: this.lectureID,
            course: this.courseID,
            correct: -1
        })
    },

    preloadAssetsForTimeline(timeline,callback) {

    }
}

module.exports = DataController
},{"./dependencies":125,"./secrets":130,"get-url-param":116}],125:[function(require,module,exports){
module.exports.jquery = require('jquery')
//module.exports.aframe = require('aframe')
module.exports.htmlShader = require('aframe-html-shader')
module.exports.videoControls = require('aframe-video-controls')
module.exports.mouseCursor = require('aframe-mouse-cursor-component')
module.exports.eventSet = require('aframe-event-set-component')
module.exports.firebase = require("firebase/app");
require("firebase/auth");
require("firebase/database");
},{"aframe-event-set-component":109,"aframe-html-shader":110,"aframe-mouse-cursor-component":111,"aframe-video-controls":112,"firebase/app":113,"firebase/auth":114,"firebase/database":115,"jquery":117}],126:[function(require,module,exports){
const dependencies = require('./dependencies')
const Assets = require('./assets')
const $ = dependencies.jquery

const ModelController = {
    getModelEntityFromTimelineItem(timelineItem) {
        const angleX = timelineItem.angleX || 0
        const angleY = timelineItem.angleY || 0
        const angleZ = timelineItem.angleZ || 0
        const rotation = `${angleX} ${angleY} ${angleZ}`
        const posX = timelineItem.offsetX || 0
        const posY = timelineItem.offsetY || 10
        const posZ = timelineItem.offsetZ || 0
        const position = `${posX} ${posY} ${posZ}`
        //load assets on event for now, do preloading later
        const assetID = Assets.addAssetFromURL(timelineItem.resource)
        const scale = timelineItem.scale || 1
        const audio = timelineItem.audio || null
        this.modelEntity = this.getModelEntity(assetID,scale,rotation,position,audio)
        return this.modelEntity
    },

    getModelEntity(assetID,scaleFactor,rotation,position,audio) {
        const pos = position || "0 10 0"
        const rot = rotation || "0 0 0"
        const scale = scaleFactor * 0.01 || 0.01
        let audioStr = ""
        if(audio != null) {
            audioStr = `sound="src: url(${audio}); autoplay: true; volume: 8"`
        }
        return $(`<a-entity gltf-model="#${assetID}" scale="${scale} ${scale} ${scale}" position="${position}" rotation="${rotation}" ${audioStr}></a-entity>`)
    },

    createRotationAnimation(timelineItem) {
        console.log("create rotation",timelineItem)
        if(timelineItem.rotate != -1 && timelineItem.rotate != 1) return null;
        if(!timelineItem.rotateAxis) return null;
        const rotDir = parseInt(timelineItem.rotate)
        console.log("rotDir",rotDir)
        const rotAxis = timelineItem.rotateAxis
        const rotVal = rotDir * 360
        let rotStr = '';
        if(rotAxis == 'x') {
            rotStr = `${rotVal} ${timelineItem.angleY} ${timelineItem.angleZ}`
        } else if(rotAxis == 'y') {
            rotStr = `${timelineItem.angleX} ${rotVal} ${timelineItem.angleZ}`
        } else {
            rotStr = `${timelineItem.angleX} ${timelineItem.angleY} ${rotVal}`
        }
        let fill = 'forwards'
        if(rotDir == 1) {
            fill = 'backwards'
        }
        const tag = `<a-animation attribute="rotation" dur="2000" to="${rotStr}" repeat="indefinite" easing="linear" fill="${fill}"></a-animation>`
        console.log("create tag",tag);
        return $(tag)
    },

    controlModel(scene) {
        this.scene = scene
        this.model = scene.currentItem
        console.log("control model:",this.model)
        this.timeout = setTimeout(function() {
            console.log("timeout reached")
            this.finishModel()
        }.bind(this),this.model.duration)
    },

    finishModel() {
        const video = document.getElementById('video')
        if((video.duration - video.currentTime) > 1 && this.scene.timeline.length == 0) {
            this.scene.timeline.push({
                id: "tempVideo",
                type: "video",
                resource: this.scene.videoURL
            })
        }
        console.log("remaining timeline",this.scene.timeline)
        this.scene.presentNext()
    }
}

module.exports = ModelController
},{"./assets":123,"./dependencies":125}],127:[function(require,module,exports){
const dependencies = require('./dependencies')
const $ = dependencies.jquery

const PrimitiveObjectsController = {
    getVideoPlane() {
        return $(`
            <a-box id="videoPlane" scale="32 18 0.1" position="0 10 8"></a-box>
        `)
    },

    getCircularStage() {
        return $(`
            <a-entity id="circularStage">
                <a-cylinder color="#455A64" radius="16" height="0.1"></a-cylinder>
                <a-cylinder color="#546E7A" radius="14" height="0.15"></a-cylinder>
            </a-entity>
        `)
    },

    getLoading() {
        return $(`
            <a-entity id="loadingIndicator">
                <a-text value="Loading..." position="0 5 0" align="center" width="36">
                <a-animation attribute="scale"
                    dur="800"
                    fill="forwards"
                    to="1.2 1.2 1.2"
                    direction="alternate"
                    delay="0"
                    easing="ease-in-out-sine"
                    repeat="indefinite"></a-animation>
                </a-text>
            </a-entity>
        `)
    },

    getText(text,width) {
        return $(`
            <a-text value="${text}" position="0 8 0" width="${width}" align="center"></a-text>
        `)
    },

    getCursor() {
        return $(`
            <a-entity id="mobileCursor" cursor="fuse: true; fuseTimeout: 2000"
            position="0 0 -1"
            geometry="primitive: ring; radiusInner: 0.02; radiusOuter: 0.03"
            material="color: #B3E5FC; shader: flat">
                <a-animation begin="cursor-fusing" easing="ease-in" attribute="scale" dur="2000" 
                fill="backwards" from="1 1 1" to="0.1 0.1 0.1"></a-animation>
            </a-entity>
        `)
    },

    getInvisibleCursor() {
        return $(`
            <a-entity id="mobileCursor" cursor="fuse: true; fuseTimeout: 500"
            position="0 0 -1">
            </a-entity>
        `)
    },

    getPauseBox() {
        return $(`
        <a-box id="pauseBox" position="0 1 -12" scale="4.5 1.8 2.7" rotation="-45 0 0" color="#0097A7" pause-listener
          event-set__enter="_event: mouseenter; scale: 5 2 3"
          event-set__click="_event: click; scale: 4.5 1.8 2.7"
          >
            <a-text id="pauseText" value="Pause" scale="0.75 2 1" position="0 0.05 1" align="center"></a-text>
        </a-box>
        `)
    }
}

module.exports = PrimitiveObjectsController
},{"./dependencies":125}],128:[function(require,module,exports){
const dependencies = require('./dependencies')
const Util = require('./util')
const Stage = require('./stage')
const $ = dependencies.jquery

const QuizController = {

    getQuiz(callback) {
        callback({
            question: "What's a computer?",
            answers: {
                0: 'It depends',
                1: 'Some of the above',
                2: 'None of the above',
                3: 'All of the above'
            }
        })
    },

    generateText(quiz) {
        let text = quiz.question
        let ansLetterASCII = 97;
        Object.keys(quiz.answers).forEach((index) => {
            text += '\n'
            text += String.fromCharCode(ansLetterASCII)
            text += '.) '
            text += quiz.answers[index]
            ansLetterASCII++;
        })
        return text
    },

    generateEntity(quiz) {
        const numAnswers = Object.keys(quiz.answers).length
        const leftmostPos = -6*((numAnswers/2) - 1) - 3
        const entity = $('<a-entity id="quiz"></a-entity>')
        let entitySrc = `
            <a-text value="${this.generateText(quiz)}" align="left" width="40" position="${leftmostPos} 16 0"></a-text>
        `
        let ansLetterASCII = 65;
        let currentPos = leftmostPos
        Object.keys(quiz.answers).forEach((index) => {
            const ansLetter = String.fromCharCode(ansLetterASCII)
            const ansCircle = `
                <a-circle id="ans-${ansLetter}" data-ans="${index}" position="${currentPos} 8 0" rotation="0 0 0" radius="2" color="${Util.colorForIndex(index)}" ${Util.isMobile() ? "" : "mouse-cursor"} cursor-listener
                event-set__enter="_event: mouseenter; scale: 1.25 1.25 1.25"
                event-set__leave="_event: mouseleave; scale: 1 1 1"f
                >
                    <a-text value="${ansLetter}" width="50" align="center">
                </a-circle>
            `
            entitySrc += ansCircle
            currentPos += 6
            ansLetterASCII++
        })
        entity.html(entitySrc)
        return entity
    },

    generateSubmitAnimation(ansLetter) {
        const circle = $(`#ans-${ansLetter}`)
        console.log('circle letter',ansLetter)
        const pos = circle.attr('position')
        const animation = `
            <a-animation attribute="position" dur="1500" from="${pos.x} ${pos.y} ${pos.z}" to="${pos.x} 50 ${pos.z}"></a-animation>
        `
        const animationEl = $(animation)
        circle.append(animationEl)
    },

    controlQuiz(scene) {
        this.scene = scene
        this.quiz = scene.currentItem.quiz
        console.log("control quiz:",this.quiz)
        this.timeout = setTimeout(function() {
            //scene.presentNext()
            console.log("timeout reached")
            this.finishQuiz()
        }.bind(this),this.quiz.time)
    },

    finishQuiz() {
        const video = document.getElementById('video')
        if((video.duration - video.currentTime) > 1 && this.scene.timeline.length == 0) {
            this.scene.timeline.push({
                id: "tempVideo",
                type: "video",
                resource: this.scene.videoURL
            })
        }
        $('#mobileCursor').remove()
        console.log("remaining timeline",this.scene.timeline)
        this.scene.presentNext()
    },

    submitAnswer(index,element) {
        if(this.answer) return
        this.answer = index;
        clearTimeout(this.timeout)
        let ansLetterASCII = 65 + index;
        const ansLetter = String.fromCharCode(ansLetterASCII)
        this.generateSubmitAnimation(ansLetter)
        setTimeout(function() {
            this.finishQuiz()
        }.bind(this),2000)
        console.log("submit index: " + index)
        console.log("this scene",this.scene)
        console.log("resource",this.scene.currentItem.resource)
        this.scene.DataController.submitAnswerForQuiz(this.scene.currentItem.resource,index)
        //send over to firebase
    }

}

module.exports = QuizController

AFRAME.registerComponent('cursor-listener', {
    init: function () {
      //var lastIndex = -1;
      //var COLORS = ['red', 'green', 'blue'];
      this.el.addEventListener('click', function (event) {
        // lastIndex = (lastIndex + 1) % COLORS.length;
        // this.setAttribute('material', 'color', COLORS[lastIndex]);
        const quiz = document.currentScene.currentItem
        console.log("ans " + event.target.dataset.ans)
        quiz.controller.submitAnswer(parseInt(event.target.dataset.ans),this.el)
        console.log(document.currentScene.currentItem)
      });
    //   this.el.addEventListener('mouseenter', function (event) {
    //     console.log("mouse enter!")
    //     lastIndex = (lastIndex + 1) % COLORS.length;
    //     this.setAttribute('material', 'color', COLORS[lastIndex]);
    //   });
    }
  });
},{"./dependencies":125,"./stage":132,"./util":135}],129:[function(require,module,exports){
const dependencies = require('./dependencies')
const Util = require('./util')
const Timeline = require('./timeline')
const Stage = require('./stage')
const Quiz = require('./quiz')
const PrimitiveObjects = require('./primitiveObjects')
const DataController = require('./data')
const Model = require('./model')
const Assets = require('./assets')
const Sky = require('./sky')
const SubtitleController = require('./subtitle')
const $ = dependencies.jquery

const SceneController = {
    initScene() {
        //will be dynamic, for now use sample video
        $('#videoPlane').attr('visible',false)
        $('#lecStart').attr('visible',false)

        this.DataController = DataController
        DataController.intializeFirebase()
        DataController.getLectureAndTimelineFromFirebase(function(timeline,lecture) {
            console.log("got lecture",lecture)
            console.log("got timeline",timeline)
            Sky.renderSky(lecture)
            this.timeline = timeline
            this.stage = document.getElementById('stage')
            //set video for the scene
            const videoURL = Timeline.getVideoFromTimeline(timeline)
            this.videoURL = videoURL
            $('#video').attr('src',this.videoURL)
            $('#loading').remove()
            //listen for user to start scene
            this.userInitialized = false
            document.addEventListener("click",function() {
                if (!this.userInitialized) {
                    document.getElementById('video').play()
                    document.getElementById('video').pause()
                    this.userStartScene()
                    SubtitleController.initialTime = new Date();
                }
            }.bind(this))
            if(!lecture['subtitleURL']) {
                $('#toggleBtn').remove()
            }
            if(!Util.isMobile()) {
                $('.a-enter-vr').remove()
                $('#lecStart').attr('value','Click anywhere to\n start the lecture...')
                $('#videoPlane').attr('position','0 10 16')
                $('#mainCamera').removeAttr('look-controls')
                $('a-scene').attr('cursor','rayOrigin: mouse')
                $(document).css('cursor','pointer !important')
                $('#pauseBtn').hide()
                $('#pauseBtn').click(() => {
                    this.toggleVideo()
                })
                $('#cameraContainer').attr('position','0 0 0')
            } else {
                $('#pauseBtn').remove()
                $('a-scene').append(PrimitiveObjects.getPauseBox())
                $('#pauseBox').attr('visible',false)
                $('#toggleBtn').remove()
            }
            $('#exitBtn').click(function() {
                window.history.back()
            })
            $('#lecStart').attr('visible',true)

        }.bind(this))

        document.querySelector('a-scene').addEventListener('enter-vr', () => {
            $('#cameraContainer').attr('position','0 10 0')
         });

        //set properties for desktop viewing
    },

    userStartScene() {
        this.userInitialized = true
        $('#lecStart').remove()

        if(Util.isMobile()) {
            setTimeout(function() {
                this.presentNext()
            }.bind(this),100)
        } else {
            this.presentNext()
        }
    },

    toggleVideo() {
        if(this.isPaused) {
            this.resumeVideo()
            $('#pauseBtn').text("Pause")
            $('#pauseText').attr("Value","Pause")
        } else {
            this.pauseVideo()
            $('#pauseBtn').text("Resume")
            $('#pauseText').attr("Value","Resume")
        }
    },

    pauseVideo() {
        const currentTime = Date.now()
        const elapsed = currentTime - this.videoStart
        console.log("elapsed",elapsed)
        console.log("videoStart",this.videoStart,"currentTime",currentTime)
        const remainingTime = this.videoItemDuration - elapsed
        console.log("video item duration",this.videoItemDuration)
        console.log("remaining time",remainingTime)
        document.getElementById('video').pause()
        console.log("should pause")
        this.remainingTime = remainingTime
        this.isPaused = true
        clearTimeout(this.videoTimeout)
    },

    resumeVideo() {
        this.videoTimeout = setTimeout(function() {
            document.getElementById('video').pause()
            this.presentNext()
        }.bind(this),this.remainingTime)
        this.videoStart = Date.now()
        this.videoItemDuration = this.remainingTime
        document.getElementById('video').play()
        this.isPaused = false
    },

    presentNext() {
        //delta for handling time errors
        const delta = 500
        //clear the stage
        Stage.clearStage()
        //set the current item
        this.lastItem = this.currentItem
        this.currentItem = this.timeline.shift()
        this.nextItem = this.timeline[0]

        SubtitleController.onItemChange(this.currentItem)

        if(!Util.isMobile()) {
            $('#pauseBtn').hide()
        } else {
            $('#pauseBox').attr('visible',false)
        }

        if(!this.currentItem) {
            $(this.stage).append(PrimitiveObjects.getText('Presentation Done',36))
            return
        }
        let eventTimeout = 0
        if(this.nextItem) {
            eventTimeout = this.nextItem.eventTime - this.currentItem.eventTime
        } else {
            eventTimeout = Timeline.getEventTimeoutForLastItem(this.currentItem)
        }
        if(this.currentItem.type === 'video') {
            $('#videoPlane').attr('visible',true)

            if(!Util.isMobile()) {
                $('#pauseBtn').show()
            } else {
                $('#pauseBox').attr('visible',true)
            }

            $('#mainCamera').empty()
            $('#mainCamera').append(PrimitiveObjects.getInvisibleCursor())

            setTimeout(function() {
                document.getElementById('video').play()
                //set timeout for next item
                this.videoStart = Date.now()
                this.videoItemDuration = eventTimeout
                this.videoTimeout = setTimeout(function() {
                    document.getElementById('video').pause()
                    this.presentNext()
                }.bind(this),eventTimeout + delta)
            }.bind(this),1000)
        } else if(this.currentItem.type === 'quiz') {
            console.log('start quiz')
            DataController.getQuizFromTimelineItem(this.currentItem,function(quiz) {
                if(Util.isMobile()) {
                    $('#mainCamera').empty()
                    $('#mainCamera').append(PrimitiveObjects.getCursor())
                }
                console.log("quiz in callback",quiz)
                const quizEntity = Quiz.generateEntity(quiz)
                console.log(quizEntity.html())
                $(this.stage).append(quizEntity)
                this.currentItem.controller = Quiz
                this.currentItem.quiz = quiz
                Quiz.controlQuiz(this)
            }.bind(this))
        } else if(this.currentItem.type === 'model') {
            console.log('load model')
            const entity = Model.getModelEntityFromTimelineItem(this.currentItem)
            entity.append(Model.createRotationAnimation(this.currentItem))
            this.currentItem.duration *= 1000
            $(this.stage).append(entity)
            // setTimeout(function() {
            //     this.presentNext()
            // }.bind(this),this.currentItem.duration + delta)
            Model.controlModel(this)
        }
    }
}

AFRAME.registerComponent('pause-listener', {
    init: function () {
      this.el.addEventListener('click', function (event) {
        document.currentScene.toggleVideo()
      });
    }
  });

module.exports = SceneController
},{"./assets":123,"./data":124,"./dependencies":125,"./model":126,"./primitiveObjects":127,"./quiz":128,"./sky":131,"./stage":132,"./subtitle":133,"./timeline":134,"./util":135}],130:[function(require,module,exports){
module.exports.firebaseConfig = {
    apiKey: "AIzaSyC36bqNl9kBjdmduam_qs-SmKcagNRPebU",
    authDomain: "vyden-backend.firebaseapp.com",
    databaseURL: "https://vyden-backend.firebaseio.com",
    projectId: "vyden-backend",
    storageBucket: "vyden-backend.appspot.com",
    messagingSenderId: "714670541409"
}
},{}],131:[function(require,module,exports){
const dependencies = require('./dependencies')
const $ = dependencies.jquery

const SkyController = {
    renderSky(lecture) {
        if(lecture.sky.charAt(0) === '#') {
            $('a-sky').removeAttr('src')
            $('a-sky').attr('color',lecture.sky)
            $('#ground').remove()
        } else if(lecture.sky.includes('http')) {
            $('a-sky').attr('src',lecture.sky)
            $('#ground').remove()
        } else if(lecture.sky === "default") {
            $('a-sky').attr('theta-length','90')
        }
    }
}

module.exports = SkyController
},{"./dependencies":125}],132:[function(require,module,exports){
const dependencies = require('./dependencies')
const PrimitiveObjects = require('./primitiveObjects')
const $ = dependencies.jquery

const StageController = {
    registerComponent() {
        AFRAME.registerComponent('stage', {
            init: function() {
                console.log(this)
                StageController.component = this
            },
        })
    },

    clearStage() {
        const videoPlane = $('#videoPlane');
        videoPlane.attr('visible','false')
        $('#stage').empty();
        $('#stage').append(videoPlane)
    }
}

module.exports = StageController
},{"./dependencies":125,"./primitiveObjects":127}],133:[function(require,module,exports){
const dependencies = require('./dependencies')
const DataController = require('./data')
const parseSRT = require('parse-srt')
const $ = dependencies.jquery
const Firebase = firebase

const subtitleController = {
    loadSubtitles() {
        this.subActive = true;
        this.endSub = false;
        DataController.getLectureAndTimelineFromFirebase((timeline, lecture) => {
            if (lecture['subtitleURL']) {
                fetch(lecture['subtitleURL'])
                    .then(function (response) {
                        return response.blob()
                    })
                    .then(function (blob) {
                        let reader = new FileReader();
                        reader.addEventListener("loadend", function () {
                            subtitleController.subs = parseSRT(reader.result);
                            subtitleController.subIndex = 0;
                            console.log('subtitles: ', subtitleController.subs);
                        });
                        reader.readAsText(blob);
                    })
            }
        })

        $('#toggleBtn').on('click', () => {
            this.subActive = !this.subActive;
            if (this.subActive) {
                $('#toggleBtn').text('Sub: ON');
                if (!this.endSub) {
                    const subText = this.subs[this.subIndex - 1].text.replace('<br />', '\n');
                    document.querySelector('#subtitle').setAttribute('value', subText);
                }
            } else {
                $('#toggleBtn').text('Sub: OFF');
                document.querySelector('#subtitle').setAttribute('value', '');
            }
        })
    },

    startSubtitles() {
        if (this.subs && this.subIndex < this.subs.length) {
            const endTime = new Date();
            if ((endTime - this.initialTime) / 1000 >= this.subs[this.subIndex].start) {
                this.endSub = false;
                const subText = this.subs[this.subIndex].text.replace('<br />', '\n');
                if (this.subActive) {
                    document.querySelector('#subtitle').setAttribute('value', subText);
                }
                clearTimeout(this.timeoutRef);
                this.timeoutRef = setTimeout(() => {
                    this.startTime = new Date();
                    this.startSubtitles()
                }, (this.subs[this.subIndex].end - this.subs[this.subIndex].start) * 1000);
                this.subIndex++;
            } else {
                const elapsedTime = ((new Date()) - this.initialTime) / 1000;
                this.endSub = true;
                this.timeoutRef = setTimeout(() => {
                    this.startTime = new Date();
                    this.startSubtitles();
                }, (this.subs[this.subIndex].start - elapsedTime) * 1000);
            }
        } else {
            this.endSub = true;
            document.querySelector('#subtitle').setAttribute('value', '');
        }
    },

    onItemChange(timelineItem) {
        if (timelineItem) {
            if (timelineItem.type === 'video') {
                this.endSub = false;
                const pauseEnd = new Date();
                const pauseTime = pauseEnd - this.pauseStart;
                this.initialTime -= pauseTime;
                this.startSubtitles();
            } else {
                this.endSub = true;
                this.pauseStart = new Date();
                if (this.timeoutRef) {
                    clearTimeout(this.timeoutRef);
                    if(this.subIndex > 0) this.subIndex--;
                    //Get elapsed time since start of subtitle and modify subtitle
                    const endTime = new Date();
                    const elapsedTime = (endTime - this.startTime) / 1000;
                    this.subs[this.subIndex].start = this.subs[this.subIndex].end - elapsedTime;
                    document.querySelector('#subtitle').setAttribute('value', '');
                }
            }
        } else {
            document.querySelector('#subtitle').setAttribute('value', '');
        }
    }
}

module.exports = subtitleController
},{"./data":124,"./dependencies":125,"parse-srt":118}],134:[function(require,module,exports){
const TimelineController = {
    getTimeline(lectureId,callback) {
        //retrieve timeline from Firebase

        //return fake timeline for now
        callback([{
            id: "abc123",
            lecture: "5678",
            type: "video",
            eventTime: 0,
            resource: 'https://vyden.nyc3.digitaloceanspaces.com/videos/f47c423d-ca00-4ccf-a9ba-ca7a196394d8',
        },
        {
            id: "abc123",
            lecture: "5678",
            type: "quiz",
            eventTime: 10000,
            quizTime: 10000,
            resource: 'quizID',
        },
        {
            id: "abc123",
            lecture: "5678",
            type: "video",
            eventTime: 20000,
            resource: 'https://vyden.nyc3.digitaloceanspaces.com/videos/f47c423d-ca00-4ccf-a9ba-ca7a196394d8',
        }]) 
    },

    getVideoFromTimeline(timeline) {
        for(let i = 0; i < timeline.length; i++) {
            const timelineItem = timeline[i];
            if(timelineItem.type === 'video') return timelineItem.resource
        }
    },

    getEventTimeoutForLastItem(lastItem) {
        if(lastItem.type === 'video') {
            const video = document.getElementById('video')
            return 1000 * (video.duration - video.currentTime)
        } else if(lastItem.type === 'quiz') {
            //will be the time from the actual quiz object
            return lastItem.quizTime
        }
    }
}

module.exports = TimelineController
},{}],135:[function(require,module,exports){
const Utilities = {
    isMobile() {
        return (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent))
    },

    colorForIndex(index) {
        const colors = [
            '#F4511E',
            '#FFB300',
            '#7CB342',
            '#00ACC1',
            '#5E35B1',
        ]
        return colors[index]
    }
}

module.exports = Utilities
},{}],136:[function(require,module,exports){
const dependencies = require('./dependencies')
const PrimitiveObjects = require('./primitiveObjects')
const $ = dependencies.jquery

const VideoController = {
    registerComponent() {
        AFRAME.registerComponent('video', {

            init: function() {
                console.log('video',this,this.el)
                VideoController.component = this
            },

            play: function() {

            },

        })
    },

    getVideoAssetTag(url) {
        return $(`<video id="video" src="${url}"></video>`)
    },

    getVideoPlane() {
        return $(`
        <a-video src="#video" width="16" height="9" position="0 10 8"></a-video>
        `)
    }

}

module.exports = VideoController
},{"./dependencies":125,"./primitiveObjects":127}]},{},[122]);