import { IScheduler } from '../schedulers/Scheduler';
import { IObserver } from './Observer';
import { ISubscription } from './Subscription';
export declare type SubscriberFunctionReturnType = ISubscription | void | (() => void);
export interface ISubscriberFunction<T> {
    (observer: IObserver<T>, scheduler: IScheduler): SubscriberFunctionReturnType;
}