# Oxc

> A collection of high-performance JavaScript and TypeScript tools written in Rust, including a linter, formatter, parser, transformer, resolver and minifier.

Oxc, the JavaScript Oxidation Compiler, is an open-source collection of JavaScript and TypeScript tooling written in Rust. It is developed by VoidZero Inc. and contributors and released under the MIT License. The project includes a linter (Oxlint), a formatter (Oxfmt), a parser, a transformer, a minifier and a module resolver.

## What It Is

Oxc is a toolchain for working with JavaScript and TypeScript code. Developers can lint a codebase with `npx oxlint@latest` or format it with `npx oxfmt@latest`. Tool authors can also build on the parser, transformer, minifier and resolver. According to the README, Oxc is part of VoidZero's vision of a unified JavaScript toolchain and powers Rolldown, the bundler for Vite.

## The Tools

- **Oxlint** is an ESLint-compatible linter. The site lists 800+ rules, type-aware linting powered by tsgo, and support for ESLint JS plugins. It claims to be 50-100x faster than ESLint.
- **Oxfmt** is a Prettier-compatible formatter, labeled Beta, with Tailwind class sorting. The site claims it is 30x faster than Prettier and 3x faster than Biome.
- **oxc-parser** parses .js(x) and .ts(x) files. The site says it passes all Test262 stage 4 tests and is 3x faster than SWC.
- **oxc-transform** handles TypeScript and JSX, syntax lowering to ES2015, isolated declarations DTS emit, and React Fast Refresh and styled-components support.
- **oxc-resolver** provides Node.js-compatible CJS and ESM module resolution aligned with enhanced-resolve. The site claims it is 28x faster than enhanced-resolve.
- **oxc-minify** (Alpha) performs dead code elimination, syntax shortening, whitespace removal and variable name mangling.
- A TypeScript runner and an online playground are also linked from the site.

## Ecosystem Use

The README states that Rolldown and Nuxt use Oxc for parsing, and that several projects use the resolver or Oxlint. The homepage also announces React Compiler support in a recent blog post.

## Features
- Oxlint ESLint-compatible linter with 800+ rules
- Type-aware linting powered by tsgo
- ESLint JS plugin support
- Oxfmt Prettier-compatible formatter with Tailwind class sorting
- JavaScript and TypeScript parser
- TypeScript and JSX transformer with ES2015 lowering
- Isolated declarations DTS emit
- Node.js-compatible module resolver
- Minifier with dead code elimination and name mangling
- Online playground

## Integrations
ESLint, Prettier, Rolldown, Vite, Tailwind CSS, tsgo, React

## Platforms
MACOS, LINUX, WEB, API, DEVELOPER_SDK, CLI

## Pricing
Open Source

## Version
oxlint v1.87.0

## Links
- Website: https://oxc.rs
- Documentation: https://oxc.rs/docs/guide/introduction.html
- Repository: https://github.com/oxc-project/oxc
- EveryDev.ai: https://www.everydev.ai/tools/oxc