84 lines
3 KiB
JavaScript
84 lines
3 KiB
JavaScript
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/** PURE_IMPORTS_START tslib,_OuterSubscriber,_util_subscribeToResult PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { OuterSubscriber } from '../OuterSubscriber';
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import { subscribeToResult } from '../util/subscribeToResult';
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export function withLatestFrom() {
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var args = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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args[_i] = arguments[_i];
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}
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return function (source) {
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var project;
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if (typeof args[args.length - 1] === 'function') {
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project = args.pop();
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}
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var observables = args;
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return source.lift(new WithLatestFromOperator(observables, project));
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};
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}
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var WithLatestFromOperator = /*@__PURE__*/ (function () {
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function WithLatestFromOperator(observables, project) {
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this.observables = observables;
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this.project = project;
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}
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WithLatestFromOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new WithLatestFromSubscriber(subscriber, this.observables, this.project));
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};
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return WithLatestFromOperator;
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}());
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var WithLatestFromSubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(WithLatestFromSubscriber, _super);
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function WithLatestFromSubscriber(destination, observables, project) {
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var _this = _super.call(this, destination) || this;
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_this.observables = observables;
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_this.project = project;
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_this.toRespond = [];
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var len = observables.length;
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_this.values = new Array(len);
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for (var i = 0; i < len; i++) {
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_this.toRespond.push(i);
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}
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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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return _this;
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}
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WithLatestFromSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
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this.values[outerIndex] = innerValue;
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var toRespond = this.toRespond;
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if (toRespond.length > 0) {
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var found = toRespond.indexOf(outerIndex);
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if (found !== -1) {
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toRespond.splice(found, 1);
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}
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}
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};
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WithLatestFromSubscriber.prototype.notifyComplete = function () {
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};
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WithLatestFromSubscriber.prototype._next = function (value) {
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if (this.toRespond.length === 0) {
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var args = [value].concat(this.values);
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if (this.project) {
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this._tryProject(args);
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}
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else {
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this.destination.next(args);
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}
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}
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};
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WithLatestFromSubscriber.prototype._tryProject = function (args) {
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var result;
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try {
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result = this.project.apply(this, args);
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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 WithLatestFromSubscriber;
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}(OuterSubscriber));
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//# sourceMappingURL=withLatestFrom.js.map
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