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.

3925 45919 45919

babel

🐠 Babel is a compiler for writing next generation JavaScript.

5675 42353 42353

postcss

Transforming styles with JS plugins

1578 27605 27605

PHP-Parser

A PHP parser written in PHP

937 16189 16189

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...

498 6874 6874

esprima

ECMAScript parsing infrastructure for multipurpose analysis

798 6808 6808

remark

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

375 6470 6470

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/...

641 5012 5012

javaparser

Java 1-17 Parser and Abstract Syntax Tree for Java with advanced analy...

1048 4772 4772

estree

The ESTree Spec

373 4627 4627

gogocode

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

361 4494 4494

JSqlParser

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

1234 4460 4460

ts-morph

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

173 3962 3962

unified

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

113 3895 3895

compodoc

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

388 3859 3859

expr

Expression language and expression evaluation for Go

269 3597 3597

participle

A parser library for Go

163 3007 3007

esdoc

ESDoc - Good Documentation for JavaScript

216 2739 2739

escodegen

ECMAScript code generator

348 2517 2517

ast-grep

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

46 2467 2467

react-monocle

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

93 2460 2460

cppinsights

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

129 2362 2362

retext

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

106 2261 2261

Down

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

309 2089 2089

piranha

A tool for refactoring code related to feature flag APIs

174 2074 2074

gitbase

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

123 2024 2024

infection

PHP Mutation Testing library

155 1886 1886

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 -->

273 1712 1712

rope

a python refactoring library

163 1642 1642

birdseye

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

78 1576 1576

spoon

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

324 1527 1527

cppast

Library to parse and work with the C++ AST

164 1518 1518

micromark

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

53 1482 1482

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

86 1344 1344

rewrite

Automated mass refactoring of source code.

165 1153 1153

astring

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

51 1053 1053

ModiScript

Acche din aa gaye

124 1035 1035

typehole

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

13 1035 1035

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

135 902 902

mdast

Markdown Abstract Syntax Tree format

42 860 860

tolerant-php-parser

An early-stage PHP parser designed for IDE usage scenarios.

80 840 840