import { Render } from '../../../types';
/**
 * The options for render table of content.
 */
export interface TocOptions {
    /**
     * The title of table of content.
     * @type {string}
     */
    title?: string;
    /**
     * Compatible to heading regex expression from the main text (`p` element of html).
     * @type {string}
     */
    compatible?: string;
}
/**
 * Render heading elements.
 *
 * @returns
 *   Transform.
 */
export declare function renderToc(): Render;
