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49 lines
1.9 KiB
TypeScript
49 lines
1.9 KiB
TypeScript
import { OperatorFunction, SubscribableOrPromise } from '../types';
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/**
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* Buffers the source Observable values starting from an emission from
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* `openings` and ending when the output of `closingSelector` emits.
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*
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* <span class="informal">Collects values from the past as an array. Starts
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* collecting only when `opening` emits, and calls the `closingSelector`
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* function to get an Observable that tells when to close the buffer.</span>
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*
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* 
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*
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* Buffers values from the source by opening the buffer via signals from an
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* Observable provided to `openings`, and closing and sending the buffers when
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* a Subscribable or Promise returned by the `closingSelector` function emits.
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*
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* ## Example
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*
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* Every other second, emit the click events from the next 500ms
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*
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* ```ts
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* import { fromEvent, interval, EMPTY } from 'rxjs';
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* import { bufferToggle } from 'rxjs/operators';
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*
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* const clicks = fromEvent(document, 'click');
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* const openings = interval(1000);
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* const buffered = clicks.pipe(bufferToggle(openings, i =>
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* i % 2 ? interval(500) : EMPTY
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* ));
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* buffered.subscribe(x => console.log(x));
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* ```
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*
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* @see {@link buffer}
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* @see {@link bufferCount}
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* @see {@link bufferTime}
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* @see {@link bufferWhen}
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* @see {@link windowToggle}
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*
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* @param {SubscribableOrPromise<O>} openings A Subscribable or Promise of notifications to start new
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* buffers.
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* @param {function(value: O): SubscribableOrPromise} closingSelector A function that takes
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* the value emitted by the `openings` observable and returns a Subscribable or Promise,
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* which, when it emits, signals that the associated buffer should be emitted
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* and cleared.
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* @return {Observable<T[]>} An observable of arrays of buffered values.
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* @method bufferToggle
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* @owner Observable
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*/
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export declare function bufferToggle<T, O>(openings: SubscribableOrPromise<O>, closingSelector: (value: O) => SubscribableOrPromise<any>): OperatorFunction<T, T[]>;
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