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Alex Spinov
Alex Spinov

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Oxlint Has a Free JavaScript Linter That Is 50-100x Faster Than ESLint

#oxlint #eslint #javascript #rust

Oxlint lints your entire codebase in the time ESLint takes to lint one file. Written in Rust, it is the fastest JavaScript/TypeScript linter ever built.

Speed Comparison 

# Lint a large project (10,000 files)
eslint: 45 seconds
biome:  0.8 seconds
oxlint: 0.4 seconds  # 100x faster than ESLint
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Oxlint is 50-100x faster than ESLint and 2x faster than Biome for linting.

Setup 

npm install oxlint
npx oxlint@latest
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No config file needed. Runs with sensible defaults immediately.

What It Catches

Oxlint includes 400+ rules from:

  • ESLint core rules
  • typescript-eslint rules
  • eslint-plugin-react
  • eslint-plugin-react-hooks
  • eslint-plugin-jsx-a11y
  • eslint-plugin-import
  • eslint-plugin-unicorn
  • eslint-plugin-jest
  • eslint-plugin-vitest
  • eslint-plugin-promise
  • eslint-plugin-n (Node.js)

All built-in. Zero plugins to install.

Configuration 

// .oxlintrc.json
{
  "rules": {
    "no-unused-vars": "warn",
    "no-console": "off",
    "eqeqeq": "error",
    "no-var": "error",
    "prefer-const": "warn",
    "react-hooks/exhaustive-deps": "warn"
  },
  "env": {
    "browser": true,
    "node": true
  },
  "globals": {
    "process": "readonly"
  }
}
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Use with ESLint (Gradual Migration)

Oxlint can run alongside ESLint:

# Run oxlint first (fast), then ESLint for remaining rules
npx oxlint && npx eslint .
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The eslint-plugin-oxlint automatically disables ESLint rules that oxlint covers:

npm install eslint-plugin-oxlint
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// eslint.config.js
import oxlint from "eslint-plugin-oxlint";

export default [
  ...oxlint.configs["flat/recommended"],
  // Your other ESLint rules
];
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This way:

  1. Oxlint handles 400+ rules (instant)
  2. ESLint handles remaining custom rules
  3. No duplicate warnings

VS Code Integration

Install the "oxc" extension for real-time linting in your editor.

Part of the Oxc Toolchain

Oxlint is part of Oxc (Oxidation Compiler):

  • Oxlint — Linter (50-100x faster than ESLint)
  • Oxc Parser — JS/TS parser (3x faster than SWC)
  • Oxc Transformer — TypeScript/JSX transform
  • Oxc Resolver — Module resolver
  • Oxc Minifier — Code minifier (coming)

All written in Rust, all focused on speed.

When to Use Oxlint vs Biome

Oxlint: Fastest linter. Use alongside ESLint for gradual migration.
Biome: Linter + formatter. Use to replace both ESLint AND Prettier.

Need fast developer tooling? I build web tools and data solutions. Email spinov001@gmail.com or check my Apify tools.

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