import { OnChanges, SimpleChanges } from '@angular/core';
import { Title } from '@angular/platform-browser';
import * as i0 from "@angular/core";
export declare class AlCustomTitleDirective implements OnChanges {
    private titleService;
    titles: string | string[];
    constructor(titleService: Title);
    ngOnChanges(changes: SimpleChanges): void;
    static ɵfac: i0.ɵɵFactoryDef<AlCustomTitleDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDefWithMeta<AlCustomTitleDirective, "[alCustomTitle]", never, { "titles": "alCustomTitle"; }, {}, never>;
}
