1 /** PURE_IMPORTS_START _Observable,_util_isArray,_operators_map,_util_isObject,_from PURE_IMPORTS_END */
2 import { Observable } from '../Observable';
3 import { isArray } from '../util/isArray';
4 import { map } from '../operators/map';
5 import { isObject } from '../util/isObject';
6 import { from } from './from';
7 export function forkJoin() {
9 for (var _i = 0; _i < arguments.length; _i++) {
10 sources[_i] = arguments[_i];
12 if (sources.length === 1) {
13 var first_1 = sources[0];
14 if (isArray(first_1)) {
15 return forkJoinInternal(first_1, null);
17 if (isObject(first_1) && Object.getPrototypeOf(first_1) === Object.prototype) {
18 var keys = Object.keys(first_1);
19 return forkJoinInternal(keys.map(function (key) { return first_1[key]; }), keys);
22 if (typeof sources[sources.length - 1] === 'function') {
23 var resultSelector_1 = sources.pop();
24 sources = (sources.length === 1 && isArray(sources[0])) ? sources[0] : sources;
25 return forkJoinInternal(sources, null).pipe(map(function (args) { return resultSelector_1.apply(void 0, args); }));
27 return forkJoinInternal(sources, null);
29 function forkJoinInternal(sources, keys) {
30 return new Observable(function (subscriber) {
31 var len = sources.length;
33 subscriber.complete();
36 var values = new Array(len);
39 var _loop_1 = function (i) {
40 var source = from(sources[i]);
42 subscriber.add(source.subscribe({
43 next: function (value) {
50 error: function (err) { return subscriber.error(err); },
51 complete: function () {
53 if (completed === len || !hasValue) {
54 if (emitted === len) {
55 subscriber.next(keys ?
56 keys.reduce(function (result, key, i) { return (result[key] = values[i], result); }, {}) :
59 subscriber.complete();
64 for (var i = 0; i < len; i++) {
69 //# sourceMappingURL=forkJoin.js.map