/**
 * Generate a table of contents (TOC).
 *
 * Looks for the first heading matching `options.heading` (case insensitive),
 * removes everything between it and an equal or higher next heading, and
 * replaces that with a list representing the rest of the document structure,
 * linking to all further headings.
 *
 * @param {Readonly<Options> | null | undefined} [options]
 *   Configuration (optional).
 * @returns
 *   Transform.
 */
export default function remarkToc(options?: Readonly<Options> | null | undefined): (tree: Root) => undefined;
export type Root = import('mdast').Root;
export type Options = import('mdast-util-toc').Options;