import { MonoTypeOperatorFunction, SchedulerLike } from '../types'; /** * Asynchronously subscribes Observers to this Observable on the specified {@link SchedulerLike}. * *  * * @param {SchedulerLike} scheduler - The {@link SchedulerLike} to perform subscription actions on. * @return {Observable<T>} The source Observable modified so that its subscriptions happen on the specified {@link SchedulerLike}. . * @method subscribeOn * @owner Observable */ export declare function subscribeOn<T>(scheduler: SchedulerLike, delay?: number): MonoTypeOperatorFunction<T>;