import { ConnectableObservable } from '../observable/ConnectableObservable';
/**
 * Returns a ConnectableObservable, which is a variety of Observable that waits until its connect method is called
 * before it begins emitting items to those Observers that have subscribed to it.
 *
 * <img src="./img/publish.png" width="100%">
 *
 * @returns a ConnectableObservable that upon connection causes the source Observable to emit items to its Observers.
 */
export declare function publish<T>(): ConnectableObservable<T>;