import { Time } from './clock';
import { Observable, Observer } from './observable';
export declare const action: (f: () => void) => void;
/**
 * Synchronous time-based emitter
 */
export interface Emitter extends Observable<Time>, Observer<Time> {
}
export declare const newEmitter: () => Emitter;
export declare const multicast: (a: Observable<Time>) => Observable<Time>;
export declare const mergeMany: (observables: readonly Observable<Time>[]) => Observable<Time>;