Most popular ast repositories and open source projects

A grammar describes the syntax of a programming language, and might be defined in Backus-Naur form (BNF). A lexer performs lexical analysis, turning text into tokens. A parser takes tokens and builds a data structure like an abstract syntax tree (AST). The parser is concerned with context: does the sequence of tokens fit the grammar? A compiler is a combined lexer and parser, built for a specific grammar.

prettier

Prettier is an opinionated code formatter.

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babel

🐠 Babel is a compiler for writing next generation JavaScript.

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postcss

Transforming styles with JS plugins

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PHP-Parser

A PHP parser written in PHP

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rector

Instant Upgrades and Automated Refactoring of any PHP 5.3+ code

633   7307   7307  

js-code-to-svg-flowchart

js2flowchart - a visualization library to convert any JavaScript code...

480   7079   7079  

esprima

ECMAScript parsing infrastructure for multipurpose analysis

798   6808   6808  

expr

Expression language and expression evaluation for Go

424   6586   6586  

remark

remark is a popular tool that transforms markdown with plugins. These...

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javaparser

Java 1-21 Parser and Abstract Syntax Tree for Java with advanced analy...

1185   5694   5694  

JSqlParser

JSqlParser parses an SQL statement and translate it into a hierarchy o...

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astexplorer

A web tool to explore the ASTs generated by various parsers.

671   5517   5517  

go-ast-book

:books: 《Go语言定制指南》(原名：Go语法树入门/开源免费图书/Go语言进阶/...

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estree

The ESTree Spec

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gogocode

GoGoCode is a transformer for JavaScript/Typescript/HTML based on AST...

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ts-morph

TypeScript Compiler API wrapper for static analysis and programmatic c...

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unified

☔️ interface for parsing, inspecting, transforming, and serializing c...

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compodoc

:notebook_with_decorative_cover: The missing documentation tool for yo...

388   3859   3859  

participle

A parser library for Go

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esdoc

ESDoc - Good Documentation for JavaScript

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escodegen

ECMAScript code generator

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rewrite

Automated mass refactoring of source code.

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ast-grep

⚡A CLI tool for code structrual search, lint and rewriting. Written i...

46   2467   2467  

react-monocle

A developer tool to visualize a React application's component hierarch...

77   2449   2449  

cppinsights

C++ Insights - See your source code with the eyes of a compiler

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Down

Blazing fast Markdown / CommonMark rendering in Swift, built upon cmar...

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piranha

A tool for refactoring code related to feature flag APIs

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retext

natural language processor powered by plugins part of the @unifiedjs c...

106   2261   2261  

gitbase

SQL interface to git repositories, written in Go. https://docs.sourced...

124   2076   2076  

infection

PHP Mutation Testing library

155   1886   1886  

spoon

Spoon is a metaprogramming library to analyze and transform Java sourc...

357   1785   1785  

csstree

A tool set for CSS including fast detailed parser, walker, generator a...

99   1715   1715  

babylon

PSA: moved into babel/babel as @babel/parser -->

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birdseye

Graphical Python debugger which lets you easily view the values of all...

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rope

a python refactoring library

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cppast

Library to parse and work with the C++ AST

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micromark

small, safe, and great commonmark (optionally gfm) compliant markdown...

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diffsitter

A tree-sitter based AST difftool to get meaningful semantic diffs

22   1368   1368  

rehype

HTML processor powered by plugins part of the @unifiedjs collective

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webcrack

Deobfuscate obfuscator.io, unminify and unpack bundled javascript

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astring

🌳 Tiny and fast JavaScript code generator from an ESTree-compliant AS...

51   1053   1053  

typehole

TypeScript development tool for Visual Studio Code that helps you auto...

13   1035   1035  

ModiScript

Acche din aa gaye

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meriyah

A 100% compliant, self-hosted javascript parser - https://meriyah.git...

43   940   940  

starry-night

Syntax highlighting, like GitHub

19   936   936  

php-parser

PHP parser written in Go

65   928   928  

proposal-binary-ast

Binary AST proposal for ECMAScript

24   923   923  

solhint

Solhint is an open-source project to provide a linting utility for Sol...

147   921   921  

estraverse

ECMAScript JS AST traversal functions

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mdast

Markdown Abstract Syntax Tree format

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