import { RendererFactory2 } from '@angular/core';
import { Product } from '../product/product-models';
import { Article } from '../article/article-models';
export declare class SeoJsonLdService {
    private rendererFactory;
    private document;
    constructor(rendererFactory: RendererFactory2, document: any);
    attachArticle(item: Article, itemURL: string, publisherName: string, publisherLogo: string): void;
    attachProduct(item: Product, itemURL: string, sellerName: string, aggregateRating?: any, review?: any): void;
    private attach;
}