import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class LoaderService {
    private requests;
    constructor();
    requestBegin(): void;
    requestEnded(): void;
    loading(): Observable<boolean>;
    static ɵfac: i0.ɵɵFactoryDeclaration<LoaderService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LoaderService>;
}