import { Injector } from '@angular/core';
import { ActivatedRoute, Router } from '@angular/router';
import { Observable } from 'rxjs';
import { Breadcrumb } from './breadcrumb';
export declare class PpBreadcrumbsService {
    private router;
    private injector;
    postProcess: (crumbs: Breadcrumb[]) => Promise<Breadcrumb[]> | Observable<Breadcrumb[]> | Breadcrumb[];
    private breadcrumbs;
    private defaultResolver;
    private breadcrumbsSource;
    readonly crumbs$: Observable<Breadcrumb[]>;
    constructor(router: Router, route: ActivatedRoute, injector: Injector);
    refreshBreadcrumbs(): void;
    private resolveCrumbs;
    private wrapIntoObservable;
    private isPromise;
}