46 lines
2.1 KiB
JavaScript
46 lines
2.1 KiB
JavaScript
import { __read, __spreadArray } from "tslib";
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import { Observable } from '../Observable';
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import { innerFrom } from './innerFrom';
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import { argsOrArgArray } from '../util/argsOrArgArray';
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import { EMPTY } from './empty';
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import { createOperatorSubscriber } from '../operators/OperatorSubscriber';
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import { popResultSelector } from '../util/args';
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export function zip() {
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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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var resultSelector = popResultSelector(args);
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var sources = argsOrArgArray(args);
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return sources.length
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? new Observable(function (subscriber) {
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var buffers = sources.map(function () { return []; });
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var completed = sources.map(function () { return false; });
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subscriber.add(function () {
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buffers = completed = null;
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});
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var _loop_1 = function (sourceIndex) {
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innerFrom(sources[sourceIndex]).subscribe(createOperatorSubscriber(subscriber, function (value) {
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buffers[sourceIndex].push(value);
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if (buffers.every(function (buffer) { return buffer.length; })) {
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var result = buffers.map(function (buffer) { return buffer.shift(); });
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subscriber.next(resultSelector ? resultSelector.apply(void 0, __spreadArray([], __read(result))) : result);
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if (buffers.some(function (buffer, i) { return !buffer.length && completed[i]; })) {
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subscriber.complete();
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}
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}
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}, function () {
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completed[sourceIndex] = true;
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!buffers[sourceIndex].length && subscriber.complete();
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}));
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};
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for (var sourceIndex = 0; !subscriber.closed && sourceIndex < sources.length; sourceIndex++) {
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_loop_1(sourceIndex);
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}
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return function () {
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buffers = completed = null;
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};
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})
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: EMPTY;
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}
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//# sourceMappingURL=zip.js.map
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