import { Meta, Title } from '@angular/platform-browser';
import * as i0 from "@angular/core";
export declare class SeoService {
    private meta;
    private title;
    private keywords?;
    private apptitle;
    constructor(meta: Meta, title: Title);
    setDescription(desc: string): void;
    setAuthor(desc: string): void;
    addKeywords(keyw: string[] | string): void;
    private setKeyWords;
    clearKeyWords(): void;
    setTitle(t: string): void;
    enableCrawlers(status?: boolean): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<SeoService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SeoService>;
}