import { RendererFactory2 } from '@angular/core';
import * as i0 from "@angular/core";
export declare class SdLoadingService {
    #private;
    private loadingId;
    private renderer;
    private loadingMap;
    constructor(rendererFactory: RendererFactory2);
    start: (element?: string) => void;
    isLoading: (element?: string) => boolean | null;
    stop: (element?: string) => void;
    static ɵfac: i0.ɵɵFactoryDeclaration<SdLoadingService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SdLoadingService>;
}
