37 lines
1.5 KiB
JavaScript
37 lines
1.5 KiB
JavaScript
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import { operate } from '../util/lift';
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import { innerFrom } from '../observable/innerFrom';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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export function audit(durationSelector) {
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return operate((source, subscriber) => {
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let hasValue = false;
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let lastValue = null;
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let durationSubscriber = null;
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let isComplete = false;
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const endDuration = () => {
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durationSubscriber === null || durationSubscriber === void 0 ? void 0 : durationSubscriber.unsubscribe();
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durationSubscriber = null;
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if (hasValue) {
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hasValue = false;
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const value = lastValue;
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lastValue = null;
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subscriber.next(value);
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}
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isComplete && subscriber.complete();
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};
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const cleanupDuration = () => {
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durationSubscriber = null;
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isComplete && subscriber.complete();
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};
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source.subscribe(createOperatorSubscriber(subscriber, (value) => {
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hasValue = true;
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lastValue = value;
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if (!durationSubscriber) {
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innerFrom(durationSelector(value)).subscribe((durationSubscriber = createOperatorSubscriber(subscriber, endDuration, cleanupDuration)));
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}
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}, () => {
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isComplete = true;
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(!hasValue || !durationSubscriber || durationSubscriber.closed) && subscriber.complete();
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}));
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});
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}
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//# sourceMappingURL=audit.js.map
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