import { AfterViewInit, ElementRef, OnDestroy } from '@angular/core';
import { AdvancedTitleService } from './title.service';
export declare class PageTitleDirective implements AfterViewInit, OnDestroy {
    private title;
    private element;
    unsetTitle: (() => void) | undefined;
    constructor(title: AdvancedTitleService, element: ElementRef);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
}