Universal Syntax Tree.

unist is a specification for syntax trees. It has a big ecosystem of utilities in JavaScript for working with these trees. It’s implemented by several other specifications.

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unifiedjs / unified

Sponsor

Star 4.8k

Parse, inspect, transform, and serialize content with syntax trees

javascript processor plugins ast cst syntax-tree vfile unist

Updated Feb 4, 2025
JavaScript

syntax-tree / mdast

Star 1.3k

Markdown Abstract Syntax Tree format

markdown ast syntax-tree unist

Updated Oct 4, 2024

syntax-tree / unist

Star 956

Universal Syntax Tree used by @unifiedjs

ast cst syntax-tree remarks unist unist-nodes unist-files unist-utilities mdast hast nlcst xast

Updated Oct 4, 2024

syntax-tree / hast

Star 857

Hypertext Abstract Syntax Tree format

html ast syntax-tree hypertext unist

Updated Feb 17, 2025

vfile / vfile

Star 520

Virtual file format for text processing used in @unifiedjs

file virtual unified vfile unist

Updated Feb 4, 2025
JavaScript

syntax-tree / unist-util-visit

Star 327

utility to visit nodes

syntax-tree util visit unist walk unist-util

Updated Oct 20, 2025
JavaScript

syntax-tree / mdast-util-from-markdown

Star 268

mdast utility to parse markdown

markdown parse unist mdast tokenize mdast-util

Updated Mar 5, 2025
JavaScript

syntax-tree / nlcst

Star 225

Natural Language Concrete Syntax Tree format

natural-language ast cst syntax-tree unist

Updated Oct 4, 2024

syntax-tree / hastscript

Star 193

utility to create hast trees

html hyperscript util unist hast hast-util

Updated Feb 19, 2025
JavaScript

syntax-tree / mdast-util-to-markdown

Star 124

mdast utility to serialize markdown

markdown compile stringify unist mdast serialize mdast-util

Updated Feb 11, 2025
JavaScript

ntast

phuctm97 / ntast

Star 123

Notion Abstract Syntax Tree specification.

typescript spec syntax-tree specification unified unist notion ntast

Updated Feb 13, 2023

syntax-tree / awesome-syntax-tree

Star 117

Curated list of awesome syntax-tree, unist, hast, xast, mdast, esast, nlcst resources

awesome syntax-tree awesome-list unified unist mdast hast nlcst xast

Updated Oct 4, 2024

syntax-tree / mdast-util-to-hast

Star 112

utility to transform mdast to hast

html markdown syntax-tree unist mdast hast hast-util mdast-util

Updated Jun 7, 2024
JavaScript

syntax-tree / hast-util-to-html

Star 109

utility to serialize hast to HTML

html syntax-tree util stringify unist hast hast-util

Updated Feb 19, 2025
JavaScript

syntax-tree / mdast-util-toc

Star 88

utility to generate a table of contents from an mdast tree

markdown table syntax-tree toc contents unist mdast mdast-util

Updated Jun 2, 2024
JavaScript

syntax-tree / xast

Star 88

Extensible Abstract Syntax Tree

language xml markup ast syntax-tree extensible unist xast

Updated Oct 4, 2024

syntax-tree / unist-builder

Star 79

utility to create a new trees with a nice syntax

hyperscript syntax-tree util unist unist-util

Updated Jul 7, 2023
JavaScript

syntax-tree / unist-util-visit-parents

Star 78

utility to recursively walk over unist nodes, with ancestral information

syntax-tree util visit unist unist-util

Updated Oct 16, 2025
JavaScript

hebertialmeida / MarkdownSyntax

Sponsor

Star 74

☄️ A Type-safe Markdown parser in Swift.

swift markdown ast syntax-tree cmark unist mdast markdown-parsing syntax-highlight

Updated Sep 14, 2025
Swift

syntax-tree / unist-util-select

Star 67

utility to select unist nodes with CSS-like selectors

select remark util retext matches unist queryselector selectall unist-util

Updated Nov 6, 2023
JavaScript

Released February 11, 2016

Latest release over 2 years ago

Followers: 4 followers
Repository: syntax-tree/unist
Website: github.com/topics/unist

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