53 lines
1.9 KiB
TypeScript
53 lines
1.9 KiB
TypeScript
import { Observable } from '../Observable';
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import { Operator } from '../Operator';
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import { Subscriber } from '../Subscriber';
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import { TeardownLogic } from '../types';
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import { OuterSubscriber } from '../OuterSubscriber';
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import { InnerSubscriber } from '../InnerSubscriber';
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/**
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* Returns an Observable that mirrors the first source Observable to emit an item.
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*
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* ## Example
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* ### Subscribes to the observable that was the first to start emitting.
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*
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* ```javascript
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* const obs1 = interval(1000).pipe(mapTo('fast one'));
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* const obs2 = interval(3000).pipe(mapTo('medium one'));
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* const obs3 = interval(5000).pipe(mapTo('slow one'));
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*
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* race(obs3, obs1, obs2)
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* .subscribe(
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* winner => console.log(winner)
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* );
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*
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* // result:
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* // a series of 'fast one'
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* ```
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*
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* @param {...Observables} ...observables sources used to race for which Observable emits first.
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* @return {Observable} an Observable that mirrors the output of the first Observable to emit an item.
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* @static true
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* @name race
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* @owner Observable
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*/
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export declare function race<T>(observables: Array<Observable<T>>): Observable<T>;
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export declare function race<T>(observables: Array<Observable<any>>): Observable<T>;
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export declare function race<T>(...observables: Array<Observable<T> | Array<Observable<T>>>): Observable<T>;
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export declare class RaceOperator<T> implements Operator<T, T> {
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call(subscriber: Subscriber<T>, source: any): TeardownLogic;
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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 declare class RaceSubscriber<T> extends OuterSubscriber<T, T> {
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private hasFirst;
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private observables;
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private subscriptions;
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constructor(destination: Subscriber<T>);
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protected _next(observable: any): void;
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protected _complete(): void;
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notifyNext(outerValue: T, innerValue: T, outerIndex: number, innerIndex: number, innerSub: InnerSubscriber<T, T>): void;
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}
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