import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class LoadingService {
    private loadingSubject;
    loading$: Observable<boolean>;
    private openRequests;
    /**
     * Change status of loading indicator when sending a request.
     * Only when the first response is send, a new status is emitted.
     */
    startRequest(): void;
    /**
     * Change status of loading indicator when receiving a response.
     * Only when the last response arrived, a new status is emitted.
     */
    receivedResponse(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<LoadingService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LoadingService>;
}