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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>
+ *
+ * ![](publish.png)
+ *
+ * ## 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 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);
+}