61 lines
2.6 KiB
JavaScript
61 lines
2.6 KiB
JavaScript
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import { Subscription } from '../Subscription';
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import { operate } from '../util/lift';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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import { arrRemove } from '../util/arrRemove';
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import { asyncScheduler } from '../scheduler/async';
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import { popScheduler } from '../util/args';
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import { executeSchedule } from '../util/executeSchedule';
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export function bufferTime(bufferTimeSpan, ...otherArgs) {
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var _a, _b;
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const scheduler = (_a = popScheduler(otherArgs)) !== null && _a !== void 0 ? _a : asyncScheduler;
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const bufferCreationInterval = (_b = otherArgs[0]) !== null && _b !== void 0 ? _b : null;
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const maxBufferSize = otherArgs[1] || Infinity;
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return operate((source, subscriber) => {
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let bufferRecords = [];
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let restartOnEmit = false;
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const emit = (record) => {
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const { buffer, subs } = record;
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subs.unsubscribe();
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arrRemove(bufferRecords, record);
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subscriber.next(buffer);
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restartOnEmit && startBuffer();
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};
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const startBuffer = () => {
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if (bufferRecords) {
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const subs = new Subscription();
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subscriber.add(subs);
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const buffer = [];
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const record = {
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buffer,
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subs,
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};
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bufferRecords.push(record);
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executeSchedule(subs, scheduler, () => emit(record), bufferTimeSpan);
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}
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};
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if (bufferCreationInterval !== null && bufferCreationInterval >= 0) {
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executeSchedule(subscriber, scheduler, startBuffer, bufferCreationInterval, true);
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}
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else {
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restartOnEmit = true;
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}
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startBuffer();
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const bufferTimeSubscriber = createOperatorSubscriber(subscriber, (value) => {
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const recordsCopy = bufferRecords.slice();
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for (const record of recordsCopy) {
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const { buffer } = record;
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buffer.push(value);
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maxBufferSize <= buffer.length && emit(record);
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}
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}, () => {
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while (bufferRecords === null || bufferRecords === void 0 ? void 0 : bufferRecords.length) {
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subscriber.next(bufferRecords.shift().buffer);
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}
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bufferTimeSubscriber === null || bufferTimeSubscriber === void 0 ? void 0 : bufferTimeSubscriber.unsubscribe();
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subscriber.complete();
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subscriber.unsubscribe();
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}, undefined, () => (bufferRecords = null));
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source.subscribe(bufferTimeSubscriber);
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});
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}
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//# sourceMappingURL=bufferTime.js.map
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