/**
 * @param {Options} [options]
 * @returns {FromMarkdownExtension}
 */
export function frontmatterFromMarkdown(
  options?:
    | import('micromark-extension-frontmatter/matters.js').Options
    | undefined
): FromMarkdownExtension
/**
 * @param {Options} [options]
 * @returns {ToMarkdownExtension}
 */
export function frontmatterToMarkdown(
  options?:
    | import('micromark-extension-frontmatter/matters.js').Options
    | undefined
): ToMarkdownExtension
export type Literal = import('mdast').Literal
export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension
export type FromMarkdownHandle = import('mdast-util-from-markdown').Handle
export type ToMarkdownExtension =
  import('mdast-util-to-markdown/lib/types.js').Options
export type ToMarkdownHandle =
  import('mdast-util-to-markdown/lib/types.js').Handle
export type Map = import('mdast-util-to-markdown/lib/util/indent-lines.js').Map
export type Options =
  import('micromark-extension-frontmatter/matters.js').Options
export type Matter = import('micromark-extension-frontmatter/matters.js').Matter
export type Info = import('micromark-extension-frontmatter/matters.js').Info
