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import { multicast } from './multicast';
import { refCount } from './refCount';
import { Subject } from '../Subject';
function shareSubjectFactory() {
    return new Subject();
 * Returns a new Observable that multicasts (shares) the original Observable. As long as there is at least one
 * Subscriber this Observable will be subscribed and emitting data. When all subscribers have unsubscribed it will
 * unsubscribe from the source Observable. Because the Observable is multicasting it makes the stream `hot`.
 * This is an alias for .multicast(() => new Subject()).refCount().
 * <img src="./img/share.png" width="100%">
 * @return {Observable<T>} An Observable that upon connection causes the source Observable to emit items to its Observers.
 * @method share
 * @owner Observable
export function share() {
    return (source) => refCount()(multicast(shareSubjectFactory)(source));
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