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Diffstat (limited to 'node_modules/rxjs/src/internal/operators/sample.ts')
| -rw-r--r-- | node_modules/rxjs/src/internal/operators/sample.ts | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/node_modules/rxjs/src/internal/operators/sample.ts b/node_modules/rxjs/src/internal/operators/sample.ts deleted file mode 100644 index 9008af2..0000000 --- a/node_modules/rxjs/src/internal/operators/sample.ts +++ /dev/null @@ -1,72 +0,0 @@ -import { innerFrom } from '../observable/innerFrom'; -import { MonoTypeOperatorFunction, ObservableInput } from '../types'; -import { operate } from '../util/lift'; -import { noop } from '../util/noop'; -import { createOperatorSubscriber } from './OperatorSubscriber'; - -/** - * Emits the most recently emitted value from the source Observable whenever - * another Observable, the `notifier`, emits. - * - * <span class="informal">It's like {@link sampleTime}, but samples whenever - * the `notifier` `ObservableInput` emits something.</span> - * - *  - * - * Whenever the `notifier` `ObservableInput` emits a value, `sample` - * looks at the source Observable and emits whichever value it has most recently - * emitted since the previous sampling, unless the source has not emitted - * anything since the previous sampling. The `notifier` is subscribed to as soon - * as the output Observable is subscribed. - * - * ## Example - * - * On every click, sample the most recent `seconds` timer - * - * ```ts - * import { fromEvent, interval, sample } from 'rxjs'; - * - * const seconds = interval(1000); - * const clicks = fromEvent(document, 'click'); - * const result = seconds.pipe(sample(clicks)); - * - * result.subscribe(x => console.log(x)); - * ``` - * - * @see {@link audit} - * @see {@link debounce} - * @see {@link sampleTime} - * @see {@link throttle} - * - * @param notifier The `ObservableInput` to use for sampling the - * source Observable. - * @return A function that returns an Observable that emits the results of - * sampling the values emitted by the source Observable whenever the notifier - * Observable emits value or completes. - */ -export function sample<T>(notifier: ObservableInput<any>): MonoTypeOperatorFunction<T> { - return operate((source, subscriber) => { - let hasValue = false; - let lastValue: T | null = 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 - ) - ); - }); -} |
