23 lines
1.1 KiB
JavaScript
23 lines
1.1 KiB
JavaScript
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import { operate } from '../util/lift';
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import { noop } from '../util/noop';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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import { innerFrom } from '../observable/innerFrom';
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export function bufferWhen(closingSelector) {
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return operate((source, subscriber) => {
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let buffer = null;
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let closingSubscriber = null;
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const openBuffer = () => {
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closingSubscriber === null || closingSubscriber === void 0 ? void 0 : closingSubscriber.unsubscribe();
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const b = buffer;
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buffer = [];
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b && subscriber.next(b);
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innerFrom(closingSelector()).subscribe((closingSubscriber = createOperatorSubscriber(subscriber, openBuffer, noop)));
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};
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openBuffer();
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source.subscribe(createOperatorSubscriber(subscriber, (value) => buffer === null || buffer === void 0 ? void 0 : buffer.push(value), () => {
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buffer && subscriber.next(buffer);
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subscriber.complete();
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}, undefined, () => (buffer = closingSubscriber = null)));
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});
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}
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//# sourceMappingURL=bufferWhen.js.map
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