import { Subscriber } from '../Subscriber';
import { Scheduler } from '../Scheduler';
import { Observable } from '../Observable';
export declare class IntervalObservable extends Observable<number> {
    private period;
    private scheduler;
    static create(period?: number, scheduler?: Scheduler): Observable<number>;
    static dispatch(state: any): void;
    constructor(period?: number, scheduler?: Scheduler);
    protected _subscribe(subscriber: Subscriber<number>): void;
}