export default function remarkComment( options?: void | Options | undefined ): | void | import('unified').Transformer export const comment: Extension export const commentHtml: HtmlExtension export const commentFromMarkdown: FromMarkdownExtension export function commentToMarkdown( options?: Options | undefined ): ToMarkdownExtension export type Options = { emit?: boolean } export type Root = import('mdast').Root export type Extension = import('micromark-util-types').Extension export type HtmlExtension = import('micromark-util-types').HtmlExtension export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension export type ToMarkdownExtension = import('mdast-util-to-markdown').Options