63 lines
2.4 KiB
JavaScript
63 lines
2.4 KiB
JavaScript
"use strict";
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var __read = (this && this.__read) || function (o, n) {
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var m = typeof Symbol === "function" && o[Symbol.iterator];
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if (!m) return o;
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var i = m.call(o), r, ar = [], e;
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try {
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while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
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}
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catch (error) { e = { error: error }; }
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finally {
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try {
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if (r && !r.done && (m = i["return"])) m.call(i);
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}
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finally { if (e) throw e.error; }
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}
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return ar;
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};
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var __spreadArray = (this && this.__spreadArray) || function (to, from) {
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for (var i = 0, il = from.length, j = to.length; i < il; i++, j++)
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to[j] = from[i];
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return to;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.withLatestFrom = void 0;
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var lift_1 = require("../util/lift");
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var OperatorSubscriber_1 = require("./OperatorSubscriber");
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var innerFrom_1 = require("../observable/innerFrom");
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var identity_1 = require("../util/identity");
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var noop_1 = require("../util/noop");
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var args_1 = require("../util/args");
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function withLatestFrom() {
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var inputs = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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inputs[_i] = arguments[_i];
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}
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var project = args_1.popResultSelector(inputs);
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return lift_1.operate(function (source, subscriber) {
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var len = inputs.length;
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var otherValues = new Array(len);
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var hasValue = inputs.map(function () { return false; });
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var ready = false;
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var _loop_1 = function (i) {
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innerFrom_1.innerFrom(inputs[i]).subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
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otherValues[i] = value;
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if (!ready && !hasValue[i]) {
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hasValue[i] = true;
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(ready = hasValue.every(identity_1.identity)) && (hasValue = null);
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}
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}, noop_1.noop));
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};
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for (var i = 0; i < len; i++) {
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_loop_1(i);
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}
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source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
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if (ready) {
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var values = __spreadArray([value], __read(otherValues));
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subscriber.next(project ? project.apply(void 0, __spreadArray([], __read(values))) : values);
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}
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}));
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});
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}
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exports.withLatestFrom = withLatestFrom;
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//# sourceMappingURL=withLatestFrom.js.map
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