28 lines
1.2 KiB
JavaScript
28 lines
1.2 KiB
JavaScript
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/** PURE_IMPORTS_START .._util_isArray,.._observable_race PURE_IMPORTS_END */
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import { isArray } from '../util/isArray';
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import { race as raceStatic } from '../observable/race';
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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 an item
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* 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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*/
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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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return function raceOperatorFunction(source) {
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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];
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}
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return source.lift.call(raceStatic.apply(void 0, [source].concat(observables)));
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};
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}
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//# sourceMappingURL=race.js.map
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