biome-formatting

Biome's formatter enforces consistent style across JavaScript, TypeScript, JSON, and related files by applying configurable rules for indentation, quotes, semicolons, line width, and trailing commas. Run biome format --write . to format all files in your project at once.

Yes. Biome supports CI integration through biome check mode, which verifies formatting without modifying files. This lets you fail builds or block PRs when code doesn't match your configured style rules.

Biome offers configurable indentation (spaces or tabs), line endings, line width, quote style, trailing commas, semicolons, arrow parentheses, and bracket spacing. Language-specific options for JavaScript, TypeScript, JSON, and CSS let you tailor formatting to your project's conventions.

Biome is built for speed and handles large codebases efficiently. The metadata emphasizes its fast formatting capability, making it suitable for both local development and repository-wide formatting tasks without significant performance overhead.

Biome supports multiple scopes: apply formatting to individual files, project-wide directories, or your entire repository. Use biome format with targeted paths or run it on your root to apply consistent rules across all supported file types.

Biome provides global formatting settings plus language-specific options. You can configure JSON formatting separately from JavaScript and TypeScript, allowing each language to follow its own style rules while maintaining a shared baseline configuration.