Oxlint

Oxlint is a high-performance linter for JavaScript and TypeScript that is 50–100x faster than ESLint. It is correctness-focused by default and supports 695+ rules across a wide range of plugins — including TypeScript, React, Unicorn, Import, and jsx-a11y — making migration straightforward.

TL;DR

Oxlint replaces ESLint (and the linting part of Biome) with a Rust-based tool that runs dramatically faster in CI. Drop in oxlint.config.ts to get started and retain fine-grained rule control.

Installation

npm i oxlint

yarn add oxlint

pnpm add oxlint

bun add oxlint

Configuration

Oxlint can be configured with a TypeScript config file (oxlint.config.ts) or a JSON file (.oxlintrc.json). The TypeScript format provides type-safe config with auto-complete.

import { defineConfig } from 'oxlint'

export default defineConfig({
  $schema: './node_modules/oxlint/configuration_schema.json',
  plugins: ['import', 'typescript'],
  categories: {
    correctness: 'error',
    suspicious: 'warn',
  },
  rules: {
    'no-console': 'warn',
  },
  ignorePatterns: ['dist/**', '.astro/**', 'src/content/docs/snippets/**'],
  overrides: [
    {
      files: ['scripts/**'],
      rules: {
        'no-console': 'off',
      },
    },
  ],
})

Available plugins

Enable only the plugins relevant to your stack:

Plugin	Coverage
`typescript`	`@typescript-eslint` rules
`import`	`eslint-plugin-import-x` rules
`unicorn`	`eslint-plugin-unicorn` rules
`react`	`eslint-plugin-react` + `react-hooks` rules
`jsx-a11y`	Accessibility rules for JSX
`jest`	`eslint-plugin-jest` rules
`vitest`	`eslint-plugin-vitest` rules
`jsdoc`	JSDoc documentation rules
`promise`	`eslint-plugin-promise` rules
`node`	Node.js-specific rules

Rule categories

Control entire categories at once via categories:

{
  "categories": {
    "correctness": "error",
    "suspicious": "warn",
    "style": "warn"
  }
}

Individual rules in rules override category-level settings.

Scripts

Add to package.json:

{
  "scripts": {
    "lint": "oxlint .",
    "lint:fix": "oxlint --fix ."
  }
}

Type-aware linting

Oxlint supports type-aware rules by integrating with oxlint-tsgolint, the tsgo (TypeScript 7 native Go port) bridge.

npm i oxlint-tsgolint

yarn add oxlint-tsgolint

pnpm add oxlint-tsgolint

bun add oxlint-tsgolint

Enable type-aware mode in your config:

import { defineConfig } from 'oxlint'

export default defineConfig({
  options: {
    typeAware: true,
  },
  // ...
})

Astro support

Oxlint lints the <script> blocks of .astro files automatically — no plugin needed.

VS Code integration

Install the OXC extension and add to your workspace settings:

{
  "oxc.enable": true,
  "editor.codeActionsOnSave": {
    "source.fixAll.oxc": "explicit"
  }
}