import { RendererFactory2 } from '@angular/core';
import { NgxProgressIndicatorConfig } from './ngx-progress-indicator-config.model';
import * as i0 from "@angular/core";
export declare class NgxProgressIndicatorService {
    private rendererFactory;
    /** Show the progress bar and begin animating it. */
    start: () => void;
    /** End the progress bar animation. */
    finish: () => void;
    private renderer;
    constructor(rendererFactory: RendererFactory2, config: NgxProgressIndicatorConfig);
    private initialize;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgxProgressIndicatorService, [null, { optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<NgxProgressIndicatorService>;
}