import { Observable } from '../Observable';
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import { isArray } from '../util/isArray';
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import { MonoTypeOperatorFunction, OperatorFunction } from '../types';
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import { race as raceStatic } from '../observable/race';
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/* tslint:disable:max-line-length */
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/** @deprecated Deprecated in favor of static race. */
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export function race<T>(observables: Array<Observable<T>>): MonoTypeOperatorFunction<T>;
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/** @deprecated Deprecated in favor of static race. */
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export function race<T, R>(observables: Array<Observable<T>>): OperatorFunction<T, R>;
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/** @deprecated Deprecated in favor of static race. */
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export function race<T>(...observables: Array<Observable<T> | Array<Observable<T>>>): MonoTypeOperatorFunction<T>;
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/** @deprecated Deprecated in favor of static race. */
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export function race<T, R>(...observables: Array<Observable<any> | Array<Observable<any>>>): OperatorFunction<T, R>;
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/* tslint:enable:max-line-length */
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/**
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* Returns an Observable that mirrors the first source Observable to emit a next,
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* error or complete notification from the combination of this Observable and supplied Observables.
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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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* @method race
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* @owner Observable
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* @deprecated Deprecated in favor of static {@link race}.
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*/
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export function race<T>(...observables: (Observable<T> | Observable<T>[])[]): MonoTypeOperatorFunction<T> {
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return function raceOperatorFunction(source: Observable<T>) {
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// if the only argument is an array, it was most likely called with
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// `pair([obs1, obs2, ...])`
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if (observables.length === 1 && isArray(observables[0])) {
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observables = observables[0] as Observable<T>[];
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}
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return source.lift.call(raceStatic(source, ...(observables as Observable<T>[])));
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};
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}
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