| 1 | import { isArray } from '../util/isArray';
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| 2 | import { fromArray } from './fromArray';
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| 3 | import { OuterSubscriber } from '../OuterSubscriber';
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| 4 | import { subscribeToResult } from '../util/subscribeToResult';
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| 5 | export function race(...observables) {
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| 6 | if (observables.length === 1) {
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| 7 | if (isArray(observables[0])) {
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| 8 | observables = observables[0];
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| 9 | }
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| 10 | else {
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| 11 | return observables[0];
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| 12 | }
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| 13 | }
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| 14 | return fromArray(observables, undefined).lift(new RaceOperator());
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| 15 | }
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| 16 | export class RaceOperator {
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| 17 | call(subscriber, source) {
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| 18 | return source.subscribe(new RaceSubscriber(subscriber));
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| 19 | }
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| 20 | }
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| 21 | export class RaceSubscriber extends OuterSubscriber {
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| 22 | constructor(destination) {
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| 23 | super(destination);
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| 24 | this.hasFirst = false;
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| 25 | this.observables = [];
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| 26 | this.subscriptions = [];
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| 27 | }
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| 28 | _next(observable) {
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| 29 | this.observables.push(observable);
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| 30 | }
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| 31 | _complete() {
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| 32 | const observables = this.observables;
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| 33 | const len = observables.length;
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| 34 | if (len === 0) {
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| 35 | this.destination.complete();
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| 36 | }
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| 37 | else {
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| 38 | for (let i = 0; i < len && !this.hasFirst; i++) {
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| 39 | const observable = observables[i];
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| 40 | const subscription = subscribeToResult(this, observable, undefined, i);
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| 41 | if (this.subscriptions) {
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| 42 | this.subscriptions.push(subscription);
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| 43 | }
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| 44 | this.add(subscription);
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| 45 | }
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| 46 | this.observables = null;
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| 47 | }
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| 48 | }
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| 49 | notifyNext(_outerValue, innerValue, outerIndex) {
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| 50 | if (!this.hasFirst) {
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| 51 | this.hasFirst = true;
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| 52 | for (let i = 0; i < this.subscriptions.length; i++) {
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| 53 | if (i !== outerIndex) {
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| 54 | let subscription = this.subscriptions[i];
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| 55 | subscription.unsubscribe();
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| 56 | this.remove(subscription);
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| 57 | }
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| 58 | }
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| 59 | this.subscriptions = null;
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| 60 | }
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| 61 | this.destination.next(innerValue);
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| 62 | }
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| 63 | }
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| 64 | //# sourceMappingURL=race.js.map |
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