1 | "use strict";
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | var Observable_1 = require("../Observable");
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4 | var isArray_1 = require("../util/isArray");
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5 | var map_1 = require("../operators/map");
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6 | var isObject_1 = require("../util/isObject");
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7 | var from_1 = require("./from");
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8 | function forkJoin() {
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9 | var sources = [];
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10 | for (var _i = 0; _i < arguments.length; _i++) {
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11 | sources[_i] = arguments[_i];
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12 | }
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13 | if (sources.length === 1) {
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14 | var first_1 = sources[0];
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15 | if (isArray_1.isArray(first_1)) {
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16 | return forkJoinInternal(first_1, null);
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17 | }
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18 | if (isObject_1.isObject(first_1) && Object.getPrototypeOf(first_1) === Object.prototype) {
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19 | var keys = Object.keys(first_1);
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20 | return forkJoinInternal(keys.map(function (key) { return first_1[key]; }), keys);
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21 | }
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22 | }
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23 | if (typeof sources[sources.length - 1] === 'function') {
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24 | var resultSelector_1 = sources.pop();
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25 | sources = (sources.length === 1 && isArray_1.isArray(sources[0])) ? sources[0] : sources;
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26 | return forkJoinInternal(sources, null).pipe(map_1.map(function (args) { return resultSelector_1.apply(void 0, args); }));
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27 | }
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28 | return forkJoinInternal(sources, null);
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29 | }
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30 | exports.forkJoin = forkJoin;
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31 | function forkJoinInternal(sources, keys) {
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32 | return new Observable_1.Observable(function (subscriber) {
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33 | var len = sources.length;
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34 | if (len === 0) {
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35 | subscriber.complete();
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36 | return;
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37 | }
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38 | var values = new Array(len);
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39 | var completed = 0;
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40 | var emitted = 0;
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41 | var _loop_1 = function (i) {
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42 | var source = from_1.from(sources[i]);
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43 | var hasValue = false;
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44 | subscriber.add(source.subscribe({
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45 | next: function (value) {
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46 | if (!hasValue) {
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47 | hasValue = true;
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48 | emitted++;
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49 | }
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50 | values[i] = value;
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51 | },
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52 | error: function (err) { return subscriber.error(err); },
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53 | complete: function () {
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54 | completed++;
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55 | if (completed === len || !hasValue) {
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56 | if (emitted === len) {
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57 | subscriber.next(keys ?
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58 | keys.reduce(function (result, key, i) { return (result[key] = values[i], result); }, {}) :
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59 | values);
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60 | }
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61 | subscriber.complete();
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62 | }
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63 | }
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64 | }));
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65 | };
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66 | for (var i = 0; i < len; i++) {
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67 | _loop_1(i);
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68 | }
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69 | });
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70 | }
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71 |
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