pegjs/pegjs

PEG.js: Parser generator for JavaScript

Source code at GitHub https://pegjs.org/

{
  "createdAt": "2010-04-09T15:27:18Z",
  "defaultBranch": "master",
  "description": "PEG.js: Parser generator for JavaScript",
  "fullName": "pegjs/pegjs",
  "homepage": "https://pegjs.org/",
  "language": "JavaScript",
  "name": "pegjs",
  "pushedAt": "2021-11-08T18:35:39Z",
  "stargazersCount": 4913,
  "topics": [
    "javascript",
    "parser-generator",
    "peg",
    "pegjs"
  ],
  "updatedAt": "2025-11-25T19:27:44Z",
  "url": "https://github.com/pegjs/pegjs"
}

PEG.js is a simple parser generator for JavaScript that produces fast parsers with excellent error reporting. You can use it to process complex data or computer languages and build transformers, interpreters, compilers and other tools easily.

PEG.js is still very much work in progress. There are no compatibility guarantees until version 1.0

public packages

package	version	dependency status
[pegjs][P001]	[![release][P002]][P003] [![dev][P004]][P005]	[![dependencies][P006]][P007]

local packages

package	dependency status
[~/][L013]	[![dependencies][L014]][L015]
[~/test][L001]	[![dependencies][L002]][L003]
[~/tools/benchmark][L004]	[![dependencies][L005]][L006]
[~/tools/bundler][L007]	[![dependencies][L008]][L009]
[~/tools/impact][L010]	[![dependencies][L011]][L012]
[~/tools/publish-dev][L016]	[![dependencies][L017]][L018]

[P001] !: https://github.com/pegjs/pegjs/tree/master/packages/pegjs [P002] !: https://img.shields.io/npm/v/pegjs.svg [P003] !: https://www.npmjs.com/package/pegjs [P004] !: https://img.shields.io/npm/v/pegjs/dev.svg [P005] !: https://github.com/pegjs/pegjs [P006] !: https://img.shields.io/david/pegjs/pegjs.svg?path=packages/pegjs [P007] !: https://david-dm.org/pegjs/pegjs?path=packages/pegjs

[L013] !: https://github.com/pegjs/pegjs/tree/master/ [L014] !: https://img.shields.io/david/pegjs/pegjs.svg [L015] !: https://david-dm.org/pegjs/pegjs

[L001] !: https://github.com/pegjs/pegjs/tree/master/test [L002] !: https://img.shields.io/david/pegjs/pegjs.svg?path=test [L003] !: https://david-dm.org/pegjs/pegjs?path=test

[L004] !: https://github.com/pegjs/pegjs/tree/master/tools/benchmark [L005] !: https://img.shields.io/david/pegjs/pegjs.svg?path=tools/benchmark [L006] !: https://david-dm.org/pegjs/pegjs?path=tools/benchmark

[L007] !: https://github.com/pegjs/pegjs/tree/master/tools/bundler [L008] !: https://img.shields.io/david/pegjs/pegjs.svg?path=tools/bundler [L009] !: https://david-dm.org/pegjs/pegjs?path=tools/bundler

[L010] !: https://github.com/pegjs/pegjs/tree/master/tools/impact [L011] !: https://img.shields.io/david/pegjs/pegjs.svg?path=tools/impact [L012] !: https://david-dm.org/pegjs/pegjs?path=tools/impact

[L016] !: https://github.com/pegjs/pegjs/tree/master/tools/publish-dev [L017] !: https://img.shields.io/david/pegjs/pegjs.svg?path=tools/publish-dev [L018] !: https://david-dm.org/pegjs/pegjs?path=tools/publish-dev