1 /** PURE_IMPORTS_START tslib,_util_isScheduler,_util_isArray,_OuterSubscriber,_util_subscribeToResult,_fromArray PURE_IMPORTS_END */
2 import * as tslib_1 from "tslib";
3 import { isScheduler } from '../util/isScheduler';
4 import { isArray } from '../util/isArray';
5 import { OuterSubscriber } from '../OuterSubscriber';
6 import { subscribeToResult } from '../util/subscribeToResult';
7 import { fromArray } from './fromArray';
9 export function combineLatest() {
11 for (var _i = 0; _i < arguments.length; _i++) {
12 observables[_i] = arguments[_i];
14 var resultSelector = undefined;
15 var scheduler = undefined;
16 if (isScheduler(observables[observables.length - 1])) {
17 scheduler = observables.pop();
19 if (typeof observables[observables.length - 1] === 'function') {
20 resultSelector = observables.pop();
22 if (observables.length === 1 && isArray(observables[0])) {
23 observables = observables[0];
25 return fromArray(observables, scheduler).lift(new CombineLatestOperator(resultSelector));
27 var CombineLatestOperator = /*@__PURE__*/ (function () {
28 function CombineLatestOperator(resultSelector) {
29 this.resultSelector = resultSelector;
31 CombineLatestOperator.prototype.call = function (subscriber, source) {
32 return source.subscribe(new CombineLatestSubscriber(subscriber, this.resultSelector));
34 return CombineLatestOperator;
36 export { CombineLatestOperator };
37 var CombineLatestSubscriber = /*@__PURE__*/ (function (_super) {
38 tslib_1.__extends(CombineLatestSubscriber, _super);
39 function CombineLatestSubscriber(destination, resultSelector) {
40 var _this = _super.call(this, destination) || this;
41 _this.resultSelector = resultSelector;
44 _this.observables = [];
47 CombineLatestSubscriber.prototype._next = function (observable) {
48 this.values.push(NONE);
49 this.observables.push(observable);
51 CombineLatestSubscriber.prototype._complete = function () {
52 var observables = this.observables;
53 var len = observables.length;
55 this.destination.complete();
60 for (var i = 0; i < len; i++) {
61 var observable = observables[i];
62 this.add(subscribeToResult(this, observable, undefined, i));
66 CombineLatestSubscriber.prototype.notifyComplete = function (unused) {
67 if ((this.active -= 1) === 0) {
68 this.destination.complete();
71 CombineLatestSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
72 var values = this.values;
73 var oldVal = values[outerIndex];
74 var toRespond = !this.toRespond
76 : oldVal === NONE ? --this.toRespond : this.toRespond;
77 values[outerIndex] = innerValue;
78 if (toRespond === 0) {
79 if (this.resultSelector) {
80 this._tryResultSelector(values);
83 this.destination.next(values.slice());
87 CombineLatestSubscriber.prototype._tryResultSelector = function (values) {
90 result = this.resultSelector.apply(this, values);
93 this.destination.error(err);
96 this.destination.next(result);
98 return CombineLatestSubscriber;
100 export { CombineLatestSubscriber };
101 //# sourceMappingURL=combineLatest.js.map