import { Router } from '@angular/router';
import * as i0 from "@angular/core";
export declare class NavigationContextService {
    private router;
    private previousUrl;
    private currentUrl;
    constructor(router: Router);
    private getBaseRoute;
    private getListRoute;
    private getParentRoute;
    getBackRoute(): string | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<NavigationContextService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<NavigationContextService>;
}