import { OnDestroy } from "@angular/core";
import { NextObserver, ObservableInput } from "rxjs";
import { Callable } from "./internals/callable";
import { Sinkable } from "./interfaces";
export declare type StreamFn = <T>(...targets: (NextObserver<T> | ((value: any) => void))[]) => (...sources: ObservableInput<T>[]) => void;
export interface Stream extends StreamFn {
    <T>(...targets: (NextObserver<T> | ((value: any) => void))[]): (...sources: ObservableInput<T>[]) => void;
}
/**
* Automatically subscribes to source observables and forwards their values to target observers while
    * discarding error and completion events. Cleans up all subscriptions when the stream completes by manually calling `complete`
* or when the bound injector is destroyed.
*
* @usageNotes
*
* Basic usage
*
* ```ts
 * const stream = new Stream()
 * const dest = new Subject()
 * const source = interval(1000)
 *
 * stream(dest)(source)
 *
 * stream.sink = source
 * stream.add(source)
 *
 * // unsubscribe from all sources
 * stream.complete()
 * ```
*
* With `State`
*
* ```typescript
 *
 * @Component({
 *     viewProviders: [StateFactory] // or providers
 * })
 * export class MyComponent {
 *     count: number
 *
 *     constructor(stateFactory: StateFactory) {
 *         const state = stateFactory.create(this)
 *
 *         // update count once per second
 *         // automatically unsubscribe when component is destroyed
 *         stream(state)(interval(1000).pipe(
 *             map(count => ({ count }))
 *         ))
 *     }
 * }
 * ```
*
* @publicApi
*/
export declare class Stream extends Callable<StreamFn> implements OnDestroy {
    private sub;
    /**
     * A subscription or an observable of teardown logic that will be cleaned up
     * when the stream ends.
     */
    sink: Sinkable | Sinkable[];
    constructor();
    /**
     * Alternative to {@link sink}
     *
     * @param sinkables A series of {@link Sinkable} to be cleaned up when the stream ends.
     */
    add(...sinkables: Sinkable[]): void;
    /**
     * Completes the stream and unsubscribes from all sources.
     */
    complete(): void;
    /**
     * `OnDestroy` hook called by Angular when the bound injector is destroyed
     */
    ngOnDestroy(): void;
}