89 lines
3.2 KiB
JavaScript
89 lines
3.2 KiB
JavaScript
/** PURE_IMPORTS_START .._util_isArray,.._observable_ArrayObservable,.._OuterSubscriber,.._util_subscribeToResult PURE_IMPORTS_END */
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var __extends = (this && this.__extends) || function (d, b) {
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for (var p in b)
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if (b.hasOwnProperty(p))
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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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import { isArray } from '../util/isArray';
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import { ArrayObservable } from '../observable/ArrayObservable';
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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export function race() {
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var observables = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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observables[_i - 0] = arguments[_i];
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}
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// if the only argument is an array, it was most likely called with
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// `race([obs1, obs2, ...])`
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if (observables.length === 1) {
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if (isArray(observables[0])) {
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observables = observables[0];
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}
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else {
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return observables[0];
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}
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}
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return new ArrayObservable(observables).lift(new RaceOperator());
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}
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export var RaceOperator = /*@__PURE__*/ (/*@__PURE__*/ function () {
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function RaceOperator() {
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}
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RaceOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new RaceSubscriber(subscriber));
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};
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return RaceOperator;
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}());
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/**
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* We need this JSDoc comment for affecting ESDoc.
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* @ignore
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* @extends {Ignored}
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*/
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export var RaceSubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
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__extends(RaceSubscriber, _super);
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function RaceSubscriber(destination) {
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_super.call(this, destination);
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this.hasFirst = false;
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this.observables = [];
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this.subscriptions = [];
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}
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RaceSubscriber.prototype._next = function (observable) {
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this.observables.push(observable);
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};
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RaceSubscriber.prototype._complete = function () {
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var observables = this.observables;
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var len = observables.length;
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if (len === 0) {
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this.destination.complete();
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}
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else {
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for (var i = 0; i < len && !this.hasFirst; i++) {
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var observable = observables[i];
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var subscription = subscribeToResult(this, observable, observable, i);
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if (this.subscriptions) {
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this.subscriptions.push(subscription);
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}
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this.add(subscription);
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}
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this.observables = null;
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}
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};
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RaceSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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if (!this.hasFirst) {
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this.hasFirst = true;
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for (var i = 0; i < this.subscriptions.length; i++) {
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if (i !== outerIndex) {
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var subscription = this.subscriptions[i];
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subscription.unsubscribe();
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this.remove(subscription);
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}
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}
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this.subscriptions = null;
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}
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this.destination.next(innerValue);
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};
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return RaceSubscriber;
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}(OuterSubscriber));
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//# sourceMappingURL=race.js.map
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