syntax-tree

syntax-tree is an organization that contains 100+ projects that deal with syntax trees based on unist. These trees typically deal with content: markdown (mdast), HTML (hast), natural language (nlcst), XML (xast), but also JavaScript (esast).

to learn unist, see its readme
you can use syntax trees without having to deal with them, by using unified and its plugins

unified

syntax-tree is part of the unified collective, which brings together organisations that work with content as structured data.

for more about us, see unifiedjs.com
for how the collective is governed, see unifiedjs/collective

Get involved

This community has a code of conduct. You must follow it when interacting with the community.

for questions, see support.md
to help, see contributing.md
to sponsor, see GitHub sponsors, thanks.dev, or OpenCollective

Pinned Loading

Universal Syntax Tree used by @unifiedjs

987 27
Markdown Abstract Syntax Tree format

1.4k 48
Hypertext Abstract Syntax Tree format

883 28
Natural Language Concrete Syntax Tree format

229 11
Extensible Abstract Syntax Tree

91 3
ECMAScript Abstract Syntax Tree format

57 2

Repositories

Showing 10 of 140 repositories

syntax-tree/mdast-util-from-markdown’s past year of commit activity

JavaScript
281
MIT
25 2 1
Updated Feb 21, 2026
mdast Public
Markdown Abstract Syntax Tree format

syntax-tree/mdast’s past year of commit activity
syntax-tree/unist-util-visit’s past year of commit activity

JavaScript
341
MIT
21 0 0
Updated Jan 22, 2026
syntax-tree/hast-util-to-parse5’s past year of commit activity

JavaScript
2
MIT
3 0 0
Updated Dec 4, 2025
syntax-tree/mdast-util-to-hast’s past year of commit activity

JavaScript
120
MIT
47 0 0
Updated Nov 23, 2025
syntax-tree/mdast-util-mdx-expression’s past year of commit activity

JavaScript
5
MIT
2 0 0
Updated Nov 19, 2025
syntax-tree/mdast-util-mdx-jsx’s past year of commit activity

JavaScript
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MIT
6 0 0
Updated Nov 19, 2025
syntax-tree/unist-util-is’s past year of commit activity

JavaScript
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MIT
8 0 0
Updated Oct 22, 2025
syntax-tree/unist-util-visit-parents’s past year of commit activity

JavaScript
80
MIT
7 1 0
Updated Oct 16, 2025
syntax-tree/hast-util-raw’s past year of commit activity

JavaScript
12
MIT
4 0 0
Updated Apr 21, 2025