combineLatest.js
855 Bytes
/** PURE_IMPORTS_START _util_isArray,_observable_combineLatest,_observable_from PURE_IMPORTS_END */
import { isArray } from '../util/isArray';
import { CombineLatestOperator } from '../observable/combineLatest';
import { from } from '../observable/from';
var none = {};
export function combineLatest() {
var observables = [];
for (var _i = 0; _i < arguments.length; _i++) {
observables[_i] = arguments[_i];
}
var project = null;
if (typeof observables[observables.length - 1] === 'function') {
project = observables.pop();
}
if (observables.length === 1 && isArray(observables[0])) {
observables = observables[0].slice();
}
return function (source) { return source.lift.call(from([source].concat(observables)), new CombineLatestOperator(project)); };
}
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