23 lines
820 B
JavaScript
23 lines
820 B
JavaScript
import { innerFrom } from '../observable/innerFrom';
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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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export function sample(notifier) {
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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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source.subscribe(createOperatorSubscriber(subscriber, (value) => {
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hasValue = true;
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lastValue = value;
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}));
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innerFrom(notifier).subscribe(createOperatorSubscriber(subscriber, () => {
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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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}, noop));
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});
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}
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//# sourceMappingURL=sample.js.map
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