update

node_modules/rxjs/operator/share.d.ts

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+import { Observable } from '../Observable';
+/**
+ * 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 behaves similarly to .publish().refCount(), with a behavior difference when the source observable emits complete.
+ * .publish().refCount() will not resubscribe to the original source, however .share() will resubscribe to the original source.
+ * Observable.of("test").publish().refCount() will not re-emit "test" on new subscriptions, Observable.of("test").share() will
+ * re-emit "test" to new subscriptions.
+ *
+ * <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 declare function share<T>(this: Observable<T>): Observable<T>;