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import { innerFrom } from '../observable/innerFrom';
import { operate } from '../util/lift';
import { noop } from '../util/noop';
import { createOperatorSubscriber } from './OperatorSubscriber';
export function sample(notifier) {
return operate((source, subscriber) => {
let hasValue = false;
let lastValue = null;
source.subscribe(createOperatorSubscriber(subscriber, (value) => {
hasValue = true;
lastValue = value;
}));
innerFrom(notifier).subscribe(createOperatorSubscriber(subscriber, () => {
if (hasValue) {
hasValue = false;
const value = lastValue;
lastValue = null;
subscriber.next(value);
}
}, noop));
});
}
//# sourceMappingURL=sample.js.map
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