import * as i0 from "@angular/core";
export declare class IdleDetectionService {
    constructor();
    idleAfterMs: number;
    private isIdleSubject;
    isIdle$: import("rxjs").Observable<boolean>;
    private activityEvents$;
    private idleDetectionSubscription?;
    startIdleDetection(idleAfterMs: number): void;
    stopIdleDetection(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<IdleDetectionService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<IdleDetectionService>;
}