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tatianamac
250
node_modules/rxjs/observable/dom/WebSocketSubject.js
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vendored
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250
node_modules/rxjs/observable/dom/WebSocketSubject.js
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"use strict";
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var __extends = (this && this.__extends) || function (d, b) {
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for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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var Subject_1 = require('../../Subject');
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var Subscriber_1 = require('../../Subscriber');
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var Observable_1 = require('../../Observable');
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var Subscription_1 = require('../../Subscription');
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var root_1 = require('../../util/root');
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var ReplaySubject_1 = require('../../ReplaySubject');
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var tryCatch_1 = require('../../util/tryCatch');
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var errorObject_1 = require('../../util/errorObject');
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var assign_1 = require('../../util/assign');
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/**
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* We need this JSDoc comment for affecting ESDoc.
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* @extends {Ignored}
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* @hide true
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*/
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var WebSocketSubject = (function (_super) {
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__extends(WebSocketSubject, _super);
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function WebSocketSubject(urlConfigOrSource, destination) {
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if (urlConfigOrSource instanceof Observable_1.Observable) {
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_super.call(this, destination, urlConfigOrSource);
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}
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else {
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_super.call(this);
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this.WebSocketCtor = root_1.root.WebSocket;
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this._output = new Subject_1.Subject();
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if (typeof urlConfigOrSource === 'string') {
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this.url = urlConfigOrSource;
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}
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else {
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// WARNING: config object could override important members here.
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assign_1.assign(this, urlConfigOrSource);
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}
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if (!this.WebSocketCtor) {
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throw new Error('no WebSocket constructor can be found');
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}
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this.destination = new ReplaySubject_1.ReplaySubject();
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}
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}
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WebSocketSubject.prototype.resultSelector = function (e) {
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return JSON.parse(e.data);
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};
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/**
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* Wrapper around the w3c-compatible WebSocket object provided by the browser.
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*
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* @example <caption>Wraps browser WebSocket</caption>
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*
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* let socket$ = Observable.webSocket('ws://localhost:8081');
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*
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* socket$.subscribe(
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* (msg) => console.log('message received: ' + msg),
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* (err) => console.log(err),
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* () => console.log('complete')
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* );
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*
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* socket$.next(JSON.stringify({ op: 'hello' }));
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*
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* @example <caption>Wraps WebSocket from nodejs-websocket (using node.js)</caption>
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*
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* import { w3cwebsocket } from 'websocket';
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*
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* let socket$ = Observable.webSocket({
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* url: 'ws://localhost:8081',
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* WebSocketCtor: w3cwebsocket
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* });
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*
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* socket$.subscribe(
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* (msg) => console.log('message received: ' + msg),
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* (err) => console.log(err),
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* () => console.log('complete')
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* );
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*
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* socket$.next(JSON.stringify({ op: 'hello' }));
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*
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* @param {string | WebSocketSubjectConfig} urlConfigOrSource the source of the websocket as an url or a structure defining the websocket object
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* @return {WebSocketSubject}
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* @static true
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* @name webSocket
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* @owner Observable
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*/
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WebSocketSubject.create = function (urlConfigOrSource) {
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return new WebSocketSubject(urlConfigOrSource);
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};
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WebSocketSubject.prototype.lift = function (operator) {
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var sock = new WebSocketSubject(this, this.destination);
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sock.operator = operator;
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return sock;
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};
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WebSocketSubject.prototype._resetState = function () {
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this.socket = null;
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if (!this.source) {
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this.destination = new ReplaySubject_1.ReplaySubject();
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}
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this._output = new Subject_1.Subject();
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};
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// TODO: factor this out to be a proper Operator/Subscriber implementation and eliminate closures
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WebSocketSubject.prototype.multiplex = function (subMsg, unsubMsg, messageFilter) {
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var self = this;
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return new Observable_1.Observable(function (observer) {
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var result = tryCatch_1.tryCatch(subMsg)();
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if (result === errorObject_1.errorObject) {
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observer.error(errorObject_1.errorObject.e);
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}
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else {
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self.next(result);
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}
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var subscription = self.subscribe(function (x) {
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var result = tryCatch_1.tryCatch(messageFilter)(x);
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if (result === errorObject_1.errorObject) {
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observer.error(errorObject_1.errorObject.e);
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}
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else if (result) {
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observer.next(x);
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}
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}, function (err) { return observer.error(err); }, function () { return observer.complete(); });
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return function () {
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var result = tryCatch_1.tryCatch(unsubMsg)();
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if (result === errorObject_1.errorObject) {
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observer.error(errorObject_1.errorObject.e);
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}
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else {
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self.next(result);
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}
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subscription.unsubscribe();
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};
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});
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};
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WebSocketSubject.prototype._connectSocket = function () {
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var _this = this;
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var WebSocketCtor = this.WebSocketCtor;
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var observer = this._output;
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var socket = null;
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try {
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socket = this.protocol ?
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new WebSocketCtor(this.url, this.protocol) :
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new WebSocketCtor(this.url);
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this.socket = socket;
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if (this.binaryType) {
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this.socket.binaryType = this.binaryType;
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}
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}
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catch (e) {
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observer.error(e);
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return;
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}
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var subscription = new Subscription_1.Subscription(function () {
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_this.socket = null;
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if (socket && socket.readyState === 1) {
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socket.close();
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}
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});
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socket.onopen = function (e) {
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var openObserver = _this.openObserver;
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if (openObserver) {
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openObserver.next(e);
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}
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var queue = _this.destination;
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_this.destination = Subscriber_1.Subscriber.create(function (x) { return socket.readyState === 1 && socket.send(x); }, function (e) {
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var closingObserver = _this.closingObserver;
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if (closingObserver) {
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closingObserver.next(undefined);
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}
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if (e && e.code) {
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socket.close(e.code, e.reason);
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}
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else {
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observer.error(new TypeError('WebSocketSubject.error must be called with an object with an error code, ' +
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'and an optional reason: { code: number, reason: string }'));
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}
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_this._resetState();
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}, function () {
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var closingObserver = _this.closingObserver;
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if (closingObserver) {
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closingObserver.next(undefined);
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}
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socket.close();
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_this._resetState();
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});
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if (queue && queue instanceof ReplaySubject_1.ReplaySubject) {
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subscription.add(queue.subscribe(_this.destination));
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}
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};
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socket.onerror = function (e) {
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_this._resetState();
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observer.error(e);
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};
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socket.onclose = function (e) {
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_this._resetState();
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var closeObserver = _this.closeObserver;
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if (closeObserver) {
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closeObserver.next(e);
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}
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if (e.wasClean) {
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observer.complete();
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}
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else {
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observer.error(e);
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}
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};
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socket.onmessage = function (e) {
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var result = tryCatch_1.tryCatch(_this.resultSelector)(e);
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if (result === errorObject_1.errorObject) {
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observer.error(errorObject_1.errorObject.e);
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}
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else {
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observer.next(result);
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}
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};
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};
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/** @deprecated internal use only */ WebSocketSubject.prototype._subscribe = function (subscriber) {
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var _this = this;
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var source = this.source;
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if (source) {
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return source.subscribe(subscriber);
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}
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if (!this.socket) {
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this._connectSocket();
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}
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var subscription = new Subscription_1.Subscription();
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subscription.add(this._output.subscribe(subscriber));
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subscription.add(function () {
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var socket = _this.socket;
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if (_this._output.observers.length === 0) {
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if (socket && socket.readyState === 1) {
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socket.close();
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}
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_this._resetState();
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}
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});
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return subscription;
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};
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WebSocketSubject.prototype.unsubscribe = function () {
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var _a = this, source = _a.source, socket = _a.socket;
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if (socket && socket.readyState === 1) {
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socket.close();
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this._resetState();
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}
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_super.prototype.unsubscribe.call(this);
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if (!source) {
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this.destination = new ReplaySubject_1.ReplaySubject();
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}
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};
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return WebSocketSubject;
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}(Subject_1.AnonymousSubject));
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exports.WebSocketSubject = WebSocketSubject;
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//# sourceMappingURL=WebSocketSubject.js.map
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