1 | /** PURE_IMPORTS_START tslib,_OuterSubscriber,_util_subscribeToResult PURE_IMPORTS_END */
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2 | import * as tslib_1 from "tslib";
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3 | import { OuterSubscriber } from '../OuterSubscriber';
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4 | import { subscribeToResult } from '../util/subscribeToResult';
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5 | export function withLatestFrom() {
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6 | var args = [];
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7 | for (var _i = 0; _i < arguments.length; _i++) {
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8 | args[_i] = arguments[_i];
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9 | }
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10 | return function (source) {
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11 | var project;
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12 | if (typeof args[args.length - 1] === 'function') {
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13 | project = args.pop();
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14 | }
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15 | var observables = args;
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16 | return source.lift(new WithLatestFromOperator(observables, project));
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17 | };
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18 | }
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19 | var WithLatestFromOperator = /*@__PURE__*/ (function () {
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20 | function WithLatestFromOperator(observables, project) {
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21 | this.observables = observables;
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22 | this.project = project;
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23 | }
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24 | WithLatestFromOperator.prototype.call = function (subscriber, source) {
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25 | return source.subscribe(new WithLatestFromSubscriber(subscriber, this.observables, this.project));
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26 | };
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27 | return WithLatestFromOperator;
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28 | }());
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29 | var WithLatestFromSubscriber = /*@__PURE__*/ (function (_super) {
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30 | tslib_1.__extends(WithLatestFromSubscriber, _super);
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31 | function WithLatestFromSubscriber(destination, observables, project) {
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32 | var _this = _super.call(this, destination) || this;
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33 | _this.observables = observables;
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34 | _this.project = project;
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35 | _this.toRespond = [];
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36 | var len = observables.length;
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37 | _this.values = new Array(len);
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38 | for (var i = 0; i < len; i++) {
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39 | _this.toRespond.push(i);
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40 | }
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41 | for (var i = 0; i < len; i++) {
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42 | var observable = observables[i];
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43 | _this.add(subscribeToResult(_this, observable, undefined, i));
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44 | }
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45 | return _this;
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46 | }
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47 | WithLatestFromSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
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48 | this.values[outerIndex] = innerValue;
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49 | var toRespond = this.toRespond;
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50 | if (toRespond.length > 0) {
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51 | var found = toRespond.indexOf(outerIndex);
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52 | if (found !== -1) {
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53 | toRespond.splice(found, 1);
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54 | }
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55 | }
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56 | };
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57 | WithLatestFromSubscriber.prototype.notifyComplete = function () {
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58 | };
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59 | WithLatestFromSubscriber.prototype._next = function (value) {
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60 | if (this.toRespond.length === 0) {
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61 | var args = [value].concat(this.values);
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62 | if (this.project) {
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63 | this._tryProject(args);
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64 | }
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65 | else {
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66 | this.destination.next(args);
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67 | }
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68 | }
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69 | };
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70 | WithLatestFromSubscriber.prototype._tryProject = function (args) {
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71 | var result;
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72 | try {
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73 | result = this.project.apply(this, args);
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74 | }
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75 | catch (err) {
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76 | this.destination.error(err);
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77 | return;
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78 | }
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79 | this.destination.next(result);
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80 | };
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81 | return WithLatestFromSubscriber;
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82 | }(OuterSubscriber));
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83 | //# sourceMappingURL=withLatestFrom.js.map
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