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biomejs/biome

📈 Trending★ 24,684RustAudience · developerComplexity · 2/5ActiveLicenseSetup · easy

TLDR

A fast, all-in-one code formatter and linter for JavaScript, TypeScript, and CSS projects, built in Rust to replace multiple separate tools.

Mindmap

mindmap
  root((Biome))
    What it does
      Formats code
      Lints code
      Single tool
    Supported languages
      JavaScript
      TypeScript
      CSS
      JSON
    How to use
      Command line
      Editor integration
      LSP protocol
    Why choose it
      Very fast
      Rust-based
      Replaces multiple tools

Things people build with this

USE CASE 1

Replace Prettier and ESLint with a single faster tool in your JavaScript or TypeScript project.

USE CASE 2

Set up automatic code formatting and linting in VS Code using the LSP integration.

USE CASE 3

Enforce consistent code style across a team without managing multiple configuration files.

USE CASE 4

Speed up CI/CD pipelines by using a single fast linter and formatter instead of chained tools.

Tech stack

RustJavaScriptTypeScriptCSSJSONLSP

Getting it running

Difficulty · easy Time to first run · 5min
Use freely for any purpose including commercial. Keep the notice and disclose changes to the patent grant.

In plain English

Biome is a developer toolchain for web projects that bundles a code formatter and a linter into a single fast tool. A formatter automatically rewrites your code so it looks consistent, consistent indentation, consistent quote styles, consistent spacing, without you having to do it by hand. A linter scans your code for likely bugs, style problems, or bad practices and points them out before they reach production. Biome is built with speed in mind and is written in Rust, which makes it significantly faster than many alternatives in the JavaScript ecosystem. It supports JavaScript, TypeScript, JSX, CSS, and JSON out of the box. You would reach for Biome when you want a single tool to replace multiple separate tools that you might otherwise need to configure and keep synchronized. It works from the command line and also integrates with code editors through the Language Server Protocol, which is the standard way editors like VS Code communicate with language tools to provide features like real-time error highlighting and auto-formatting on save. The tech stack is Rust at its core, with a CLI and LSP interface designed for JavaScript and TypeScript projects.

Copy-paste prompts

Prompt 1
How do I set up Biome as a formatter and linter in my JavaScript project to replace Prettier and ESLint?
Prompt 2
Show me how to integrate Biome with VS Code so it auto-formats and lints my code on save.
Prompt 3
What configuration options does Biome have for formatting rules like indentation and quote styles?
Prompt 4
How do I run Biome from the command line to format and lint all files in my project?
Prompt 5
Can Biome handle CSS and JSON files, or just JavaScript and TypeScript?
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Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.