Biome is a performant toolchain for web projects, it aims to provide developer tools to maintain the health of said projects.

Biome is a fast formatter for JavaScript, TypeScript, JSX, and JSON that scores 96% compatibility with Prettier.

Biome is a performant linter for JavaScript, TypeScript, and JSX that features more than 170 rules from ESLint, TypeSCript ESLint, and other sources. It outputs detailed and contextualized diagnostics that help you to improve your code and become a better programmer!

Biome is designed from the start to be used interactively within an editor. It can format and lint malformed code as you are writing it.

npm install --save-dev --save-exact @biomejs/biome

# format files
npx @biomejs/biome format --write ./src

# lint files
npx @biomejs/biome lint ./src

# run format, lint, etc. and apply the safe suggestions
npx @biomejs/biome check --apply ./src

# check all files against format, lint, etc. in CI environments
npx @biomejs/biome ci ./src

If you want to give Biome a run without installing it, use the online playground, compiled to WebAssembly.

Check out our homepage to learn more about Biome, or directly head to the Getting Started guide to start using Biome.

Biome has sane defaults and it doesn't require configuration.

Biome aims to support all main languages of modern web development.

Biome doesn't require Node.js to function.

Biome has first-class LSP support, with a sophisticated parser that represents the source text in full fidelity and top-notch error recovery.

Biome unifies functionality that has previously been separate tools. Building upon a shared base allows us to provide a cohesive experience for processing code, displaying errors, parallelize work, caching, and configuration.

Read more about our project philosophy.

Biome is MIT licensed or Apache 2.0 licensed and moderated under the Contributor Covenant Code of Conduct.