22 lines
756 B
JavaScript
22 lines
756 B
JavaScript
|
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;
|
||
|
|
}));
|
||
|
|
notifier.subscribe(createOperatorSubscriber(subscriber, () => {
|
||
|
|
if (hasValue) {
|
||
|
|
hasValue = false;
|
||
|
|
const value = lastValue;
|
||
|
|
lastValue = null;
|
||
|
|
subscriber.next(value);
|
||
|
|
}
|
||
|
|
}, noop));
|
||
|
|
});
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=sample.js.map
|