hugoWebsite/node_modules/rxjs/dist/esm5/internal/observable/forkJoin.js

47 lines
1.9 KiB
JavaScript

import { Observable } from '../Observable';
import { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';
import { innerFrom } from './innerFrom';
import { popResultSelector } from '../util/args';
import { createOperatorSubscriber } from '../operators/OperatorSubscriber';
import { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';
import { createObject } from '../util/createObject';
export function forkJoin() {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
var resultSelector = popResultSelector(args);
var _a = argsArgArrayOrObject(args), sources = _a.args, keys = _a.keys;
var result = new Observable(function (subscriber) {
var length = sources.length;
if (!length) {
subscriber.complete();
return;
}
var values = new Array(length);
var remainingCompletions = length;
var remainingEmissions = length;
var _loop_1 = function (sourceIndex) {
var hasValue = false;
innerFrom(sources[sourceIndex]).subscribe(createOperatorSubscriber(subscriber, function (value) {
if (!hasValue) {
hasValue = true;
remainingEmissions--;
}
values[sourceIndex] = value;
}, function () { return remainingCompletions--; }, undefined, function () {
if (!remainingCompletions || !hasValue) {
if (!remainingEmissions) {
subscriber.next(keys ? createObject(keys, values) : values);
}
subscriber.complete();
}
}));
};
for (var sourceIndex = 0; sourceIndex < length; sourceIndex++) {
_loop_1(sourceIndex);
}
});
return resultSelector ? result.pipe(mapOneOrManyArgs(resultSelector)) : result;
}
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