import { Observable, Subject } from 'rxjs';
import { AppVisibilityService } from '../visibility/app-visibility.service';
export declare class Interval {
    period: number;
    private appVisibility;
    unsubscriber: Subject<unknown>;
    private pause$;
    private _paused;
    private onTick;
    constructor(period: number, appVisibility: AppVisibilityService);
    get onTick$(): Observable<void>;
    on<T>(obs: Observable<T>): Observable<T>;
    pause(): void;
    resume(): void;
    get paused(): boolean;
    destroy(): void;
}