import * as i0 from "@angular/core";
export declare class LoadingService {
    loading: import("@angular/core").WritableSignal<boolean>;
    private activeRequests;
    private manualLoading;
    private hideTimer;
    private readonly hideDelay;
    begin(): () => void;
    setLoading(loading: boolean): void;
    getLoading(): boolean;
    private syncLoading;
    private showImmediately;
    private scheduleHide;
    private clearHideTimer;
    static ɵfac: i0.ɵɵFactoryDeclaration<LoadingService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LoadingService>;
}