Infrastructure

Biome

Fast Rust-based formatter and linter for JavaScript and TypeScript. One tool replaces Prettier and ESLint with sub-second runs on large repos.

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Biome is a Rust-based toolchain for web frontends. It formats and lints JavaScript, TypeScript, JSX, JSON, and CSS, and it does it roughly 25x faster than Prettier plus ESLint. The configuration model is a single biome.json with sane defaults, and migration tools convert existing Prettier and ESLint configs. The trade-off versus the legacy stack is a smaller plugin ecosystem; Biome ships its rules in-tree. For teams hitting lint and format speed walls on big monorepos, Biome is an immediate quality-of-life upgrade.

linter formatter rust javascript typescript

Biome at a glance

Last verified October 17, 2026

Pricing: Free and open source (MIT or Apache-2.0)
Install: npm i -D -E @biomejs/biome
pnpm add -D -E @biomejs/biome
brew install biome
Models: Not an AI tool: a formatter and linter for JavaScript, TypeScript, JSX, JSON, CSS, GraphQL, and HTML, including Vue, Svelte, and Astro files, extensible with GritQL plugins. Runs from the CLI, editor LSP integrations, or the official Docker image.
Recent changes: Sep 30v2.5.15 adds nursery rules including useStrictBooleanExpressions, useLogicalProperties, and noSvelteExportLet, fixes Astro and HTML formatting, and speeds up the HTML formatter and big-file analysis.
Sep 16v2.5.14 adds noReturnInFinally, noSvelteAtDebugTags, and useValidTestTitle nursery rules and fixes source.fixAll.biome and Astro fragment handling.
Sep 10v2.5.13 adds useLayeredStyles, useBetterDomTraversing, and noXorAsExponentiation nursery rules and improves type-aware lint and formatter performance.

Sources: Install Biome, Biome blog, Biome v2.5 announcement, biomejs/biome releases, biomejs/biome Cargo.toml (license)

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Fast Rust-based formatter and linter for JavaScript and TypeScript. One tool replaces Prettier and ESLint with sub-second runs on large repos.

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