import { BlockRendererApi } from '../api/BlockRendererApi';
import { BaseValidatedClass } from '../BaseValidatedClass';
import { ImmutableHtmlNode } from '../modifications/ImmutableNode';
export declare class BlockRenderer extends BaseValidatedClass {
    api: BlockRendererApi;
    /** List of methods that must be implemented by subclasses */
    private static readonly REQUIRED_METHODS;
    constructor();
    /**
     * @deprecated - use {@link getPreviewInnerHtml} instead
     */
    getPreviewHtml(_node: ImmutableHtmlNode): string | undefined;
    /**
     * @description returns custom content to be displayed inside the {@link Block} root TD element
     */
    getPreviewInnerHtml(_node: ImmutableHtmlNode): string;
}