1import { Observable } from '../Observable'; 2import { isArray } from '../util/isArray'; 3import { MonoTypeOperatorFunction, OperatorFunction } from '../types'; 4import { race as raceStatic } from '../observable/race'; 5 6/* tslint:disable:max-line-length */ 7/** @deprecated Deprecated in favor of static race. */ 8export function race<T>(observables: Array<Observable<T>>): MonoTypeOperatorFunction<T>; 9/** @deprecated Deprecated in favor of static race. */ 10export function race<T, R>(observables: Array<Observable<T>>): OperatorFunction<T, R>; 11/** @deprecated Deprecated in favor of static race. */ 12export function race<T>(...observables: Array<Observable<T> | Array<Observable<T>>>): MonoTypeOperatorFunction<T>; 13/** @deprecated Deprecated in favor of static race. */ 14export function race<T, R>(...observables: Array<Observable<any> | Array<Observable<any>>>): OperatorFunction<T, R>; 15/* tslint:enable:max-line-length */ 16 17/** 18 * Returns an Observable that mirrors the first source Observable to emit a next, 19 * error or complete notification from the combination of this Observable and supplied Observables. 20 * @param {...Observables} ...observables Sources used to race for which Observable emits first. 21 * @return {Observable} An Observable that mirrors the output of the first Observable to emit an item. 22 * @method race 23 * @owner Observable 24 * @deprecated Deprecated in favor of static {@link race}. 25 */ 26export function race<T>(...observables: (Observable<T> | Observable<T>[])[]): MonoTypeOperatorFunction<T> { 27 return function raceOperatorFunction(source: Observable<T>) { 28 // if the only argument is an array, it was most likely called with 29 // `pair([obs1, obs2, ...])` 30 if (observables.length === 1 && isArray(observables[0])) { 31 observables = observables[0] as Observable<T>[]; 32 } 33 34 return source.lift.call(raceStatic(source, ...(observables as Observable<T>[]))); 35 }; 36} 37