102 lines
3.7 KiB
JavaScript
102 lines
3.7 KiB
JavaScript
/** PURE_IMPORTS_START tslib,_util_isScheduler,_util_isArray,_OuterSubscriber,_util_subscribeToResult,_fromArray PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { isScheduler } from '../util/isScheduler';
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import { isArray } from '../util/isArray';
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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import { fromArray } from './fromArray';
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var NONE = {};
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export function combineLatest() {
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var observables = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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observables[_i] = arguments[_i];
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}
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var resultSelector = undefined;
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var scheduler = undefined;
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if (isScheduler(observables[observables.length - 1])) {
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scheduler = observables.pop();
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}
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if (typeof observables[observables.length - 1] === 'function') {
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resultSelector = observables.pop();
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}
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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 fromArray(observables, scheduler).lift(new CombineLatestOperator(resultSelector));
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}
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var CombineLatestOperator = /*@__PURE__*/ (function () {
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function CombineLatestOperator(resultSelector) {
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this.resultSelector = resultSelector;
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}
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CombineLatestOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new CombineLatestSubscriber(subscriber, this.resultSelector));
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};
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return CombineLatestOperator;
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}());
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export { CombineLatestOperator };
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var CombineLatestSubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(CombineLatestSubscriber, _super);
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function CombineLatestSubscriber(destination, resultSelector) {
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var _this = _super.call(this, destination) || this;
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_this.resultSelector = resultSelector;
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_this.active = 0;
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_this.values = [];
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_this.observables = [];
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return _this;
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}
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CombineLatestSubscriber.prototype._next = function (observable) {
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this.values.push(NONE);
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this.observables.push(observable);
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};
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CombineLatestSubscriber.prototype._complete = function () {
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var observables = this.observables;
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var len = observables.length;
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if (len === 0) {
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this.destination.complete();
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}
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else {
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this.active = len;
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this.toRespond = len;
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for (var i = 0; i < len; i++) {
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var observable = observables[i];
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this.add(subscribeToResult(this, observable, undefined, i));
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}
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}
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};
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CombineLatestSubscriber.prototype.notifyComplete = function (unused) {
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if ((this.active -= 1) === 0) {
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this.destination.complete();
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}
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};
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CombineLatestSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
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var values = this.values;
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var oldVal = values[outerIndex];
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var toRespond = !this.toRespond
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? 0
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: oldVal === NONE ? --this.toRespond : this.toRespond;
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values[outerIndex] = innerValue;
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if (toRespond === 0) {
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if (this.resultSelector) {
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this._tryResultSelector(values);
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}
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else {
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this.destination.next(values.slice());
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}
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}
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};
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CombineLatestSubscriber.prototype._tryResultSelector = function (values) {
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var result;
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try {
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result = this.resultSelector.apply(this, values);
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}
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catch (err) {
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this.destination.error(err);
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return;
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}
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this.destination.next(result);
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};
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return CombineLatestSubscriber;
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}(OuterSubscriber));
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export { CombineLatestSubscriber };
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//# sourceMappingURL=combineLatest.js.map
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