type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

Allow parsing of the flow syntax

Allow parsing of decorators

A Babel preset that enables parsing of proposals supported by the current Node.js version.

detect and report syntax errors in source code strings

hast utility to check if a node is an embedded element

hast utility to check if a node is phrasing content

Allow parsing of import()

mdast utility to parse markdown

mdast extension to parse and serialize GFM task list items

mdast utility to serialize markdown

mdast extension to parse and serialize GFM (GitHub Flavored Markdown)

mdast extension to parse and serialize MDX.js ESM (import/exports)

mdast extension to parse and serialize MDX (or MDX.js) expressions

mdast extension to parse and serialize MDX or MDX.js JSX

mdast extension to parse and serialize GFM autolink literals

mdast extension to parse and serialize GFM tables

mdast extension to parse and serialize GFM footnotes

mdast extension to parse and serialize GFM strikethrough

hast utility for `querySelector`, `querySelectorAll`, and `matches`