56 lines
No EOL
2.5 KiB
JavaScript
56 lines
No EOL
2.5 KiB
JavaScript
import { asyncScheduler } from '../scheduler/async';
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import { isValidDate } from '../util/isDate';
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import { operate } from '../util/lift';
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import { innerFrom } from '../observable/innerFrom';
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import { createErrorClass } from '../util/createErrorClass';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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import { executeSchedule } from '../util/executeSchedule';
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export const TimeoutError = createErrorClass((_super) => function TimeoutErrorImpl(info = null) {
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_super(this);
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this.message = 'Timeout has occurred';
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this.name = 'TimeoutError';
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this.info = info;
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});
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export function timeout(config, schedulerArg) {
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const { first, each, with: _with = timeoutErrorFactory, scheduler = schedulerArg !== null && schedulerArg !== void 0 ? schedulerArg : asyncScheduler, meta = null, } = (isValidDate(config) ? { first: config } : typeof config === 'number' ? { each: config } : config);
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if (first == null && each == null) {
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throw new TypeError('No timeout provided.');
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}
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return operate((source, subscriber) => {
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let originalSourceSubscription;
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let timerSubscription;
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let lastValue = null;
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let seen = 0;
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const startTimer = (delay) => {
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timerSubscription = executeSchedule(subscriber, scheduler, () => {
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try {
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originalSourceSubscription.unsubscribe();
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innerFrom(_with({
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meta,
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lastValue,
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seen,
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})).subscribe(subscriber);
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}
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catch (err) {
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subscriber.error(err);
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}
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}, delay);
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};
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originalSourceSubscription = source.subscribe(createOperatorSubscriber(subscriber, (value) => {
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timerSubscription === null || timerSubscription === void 0 ? void 0 : timerSubscription.unsubscribe();
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seen++;
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subscriber.next((lastValue = value));
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each > 0 && startTimer(each);
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}, undefined, undefined, () => {
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if (!(timerSubscription === null || timerSubscription === void 0 ? void 0 : timerSubscription.closed)) {
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timerSubscription === null || timerSubscription === void 0 ? void 0 : timerSubscription.unsubscribe();
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}
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lastValue = null;
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}));
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!seen && startTimer(first != null ? (typeof first === 'number' ? first : +first - scheduler.now()) : each);
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});
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}
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function timeoutErrorFactory(info) {
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throw new TimeoutError(info);
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}
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//# sourceMappingURL=timeout.js.map
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