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- import { MonoTypeOperatorFunction } from '../types';
- /**
- * Make a {@link ConnectableObservable} behave like a ordinary observable and automates the way
- * you can connect to it.
- *
- * Internally it counts the subscriptions to the observable and subscribes (only once) to the source if
- * the number of subscriptions is larger than 0. If the number of subscriptions is smaller than 1, it
- * unsubscribes from the source. This way you can make sure that everything before the *published*
- * refCount has only a single subscription independently of the number of subscribers to the target
- * observable.
- *
- * Note that using the {@link share} operator is exactly the same as using the *publish* operator
- * (making the observable hot) and the *refCount* operator in a sequence.
- *
- * 
- *
- * ## Example
- *
- * In the following example there are two intervals turned into connectable observables
- * by using the *publish* operator. The first one uses the *refCount* operator, the
- * second one does not use it. You will notice that a connectable observable does nothing
- * until you call its connect function.
- *
- * ```ts
- * import { interval } from 'rxjs';
- * import { tap, publish, refCount } from 'rxjs/operators';
- *
- * // Turn the interval observable into a ConnectableObservable (hot)
- * const refCountInterval = interval(400).pipe(
- * tap((num) => console.log(`refCount ${num}`)),
- * publish(),
- * refCount()
- * );
- *
- * const publishedInterval = interval(400).pipe(
- * tap((num) => console.log(`publish ${num}`)),
- * publish()
- * );
- *
- * refCountInterval.subscribe();
- * refCountInterval.subscribe();
- * // 'refCount 0' -----> 'refCount 1' -----> etc
- * // All subscriptions will receive the same value and the tap (and
- * // every other operator) before the publish operator will be executed
- * // only once per event independently of the number of subscriptions.
- *
- * publishedInterval.subscribe();
- * // Nothing happens until you call .connect() on the observable.
- * ```
- *
- * @see {@link ConnectableObservable}
- * @see {@link share}
- * @see {@link publish}
- */
- export declare function refCount<T>(): MonoTypeOperatorFunction<T>;
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