import { Observable } from "rxjs";
import { NcrContentfulPageMetaService } from "../seo/ncr-contentful-page-meta.service";
import { InjectionToken } from "@angular/core";
import * as i0 from "@angular/core";
export declare const externalMetaService: InjectionToken<unknown>;
export declare class ContentfulSeoService {
    protected ncrContentfulPageMetaService: NcrContentfulPageMetaService;
    private originalClass;
    constructor(ncrContentfulPageMetaService: NcrContentfulPageMetaService, originalClass: any);
    getMeta(): Observable<any | null>;
    static ɵfac: i0.ɵɵFactoryDeclaration<ContentfulSeoService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ContentfulSeoService>;
}