import { Observable, Subject } from 'rxjs';
export declare class IdleTimerService {
    constructor();
    private _timerReset$;
    private _timer$;
    private _idleSubscription$;
    private _idle;
    private _timeoutMilliseconds;
    private _storageKey;
    expired$: Subject<boolean>;
    private startTimer;
    startWatching(timeoutInSecounds: number): Observable<any>;
    timerIsReset(): Observable<boolean>;
    resetTimer(): void;
    stopTimer(): void;
}