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import { Observable } from '../Observable';
import { Subject } from '../Subject';
import { multicast } from './multicast';
import { ConnectableObservable } from '../observable/ConnectableObservable';
import { MonoTypeOperatorFunction, OperatorFunction, UnaryFunction, ObservableInput, ObservedValueOf } from '../types';
import { connect } from './connect';
/**
* Returns a connectable observable that, when connected, will multicast
* all values through a single underlying {@link Subject} instance.
*
* @deprecated Will be removed in v8. To create a connectable observable, use {@link connectable}.
* `source.pipe(publish())` is equivalent to
* `connectable(source, { connector: () => new Subject(), resetOnDisconnect: false })`.
* If you're using {@link refCount} after `publish`, use {@link share} operator instead.
* `source.pipe(publish(), refCount())` is equivalent to
* `source.pipe(share({ resetOnError: false, resetOnComplete: false, resetOnRefCountZero: false }))`.
* Details: https://rxjs.dev/deprecations/multicasting
*/
export function publish<T>(): UnaryFunction<Observable<T>, ConnectableObservable<T>>;
/**
* Returns an observable, that when subscribed to, creates an underlying {@link Subject},
* provides an observable view of it to a `selector` function, takes the observable result of
* that selector function and subscribes to it, sending its values to the consumer, _then_ connects
* the subject to the original source.
*
* @param selector A function used to setup multicasting prior to automatic connection.
*
* @deprecated Will be removed in v8. Use the {@link connect} operator instead.
* `publish(selector)` is equivalent to `connect(selector)`.
* Details: https://rxjs.dev/deprecations/multicasting
*/
export function publish<T, O extends ObservableInput<any>>(selector: (shared: Observable<T>) => O): OperatorFunction<T, ObservedValueOf<O>>;
/**
* 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.
*
* <span class="informal">Makes a cold Observable hot</span>
*
* 
*
* ## Examples
*
* Make `source$` hot by applying `publish` operator, then merge each inner observable into a single one
* and subscribe
*
* ```ts
* import { zip, interval, of, map, publish, merge, tap } from 'rxjs';
*
* const source$ = zip(interval(2000), of(1, 2, 3, 4, 5, 6, 7, 8, 9))
* .pipe(map(([, number]) => number));
*
* source$
* .pipe(
* publish(multicasted$ =>
* merge(
* multicasted$.pipe(tap(x => console.log('Stream 1:', x))),
* multicasted$.pipe(tap(x => console.log('Stream 2:', x))),
* multicasted$.pipe(tap(x => console.log('Stream 3:', x)))
* )
* )
* )
* .subscribe();
*
* // Results every two seconds
* // Stream 1: 1
* // Stream 2: 1
* // Stream 3: 1
* // ...
* // Stream 1: 9
* // Stream 2: 9
* // Stream 3: 9
* ```
*
* @see {@link publishLast}
* @see {@link publishReplay}
* @see {@link publishBehavior}
*
* @param {Function} [selector] - Optional selector function which can use the multicasted source sequence as many times
* as needed, without causing multiple subscriptions to the source sequence.
* Subscribers to the given source will receive all notifications of the source from the time of the subscription on.
* @return A function that returns a ConnectableObservable that upon connection
* causes the source Observable to emit items to its Observers.
* @deprecated Will be removed in v8. Use the {@link connectable} observable, the {@link connect} operator or the
* {@link share} operator instead. See the overloads below for equivalent replacement examples of this operator's
* behaviors.
* Details: https://rxjs.dev/deprecations/multicasting
*/
export function publish<T, R>(selector?: OperatorFunction<T, R>): MonoTypeOperatorFunction<T> | OperatorFunction<T, R> {
return selector ? (source) => connect(selector)(source) : (source) => multicast(new Subject<T>())(source);
}