import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class UtilitiesService {
    #private;
    constructor();
    get _documentClickTarget(): Observable<EventTarget | null>;
    set $documentClickTarget(newValue: EventTarget);
    static ɵfac: i0.ɵɵFactoryDeclaration<UtilitiesService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<UtilitiesService>;
}