Biome Config Generator

Biome (formerly Rome) is an all-in-one toolchain for JavaScript and TypeScript projects. It replaces ESLint, Prettier, and import sorters with a single fast Rust-based tool. Biome formats, lints, and organizes imports — all configured in a single biome.json file.

Install via npm: npm install --save-dev @biomejs/biome. Then initialize a config: npx @biomejs/biome init. Add scripts to package.json: "format": "biome format --write ." and "lint": "biome lint .".

Tabs use a single tab character (\t) per indent level, which lets each developer set their preferred visual width in their editor. Spaces use a fixed number of space characters. Biome defaults to tabs, which is both compact in files and visually flexible.

Biome defaults to double quotes to align with JSON and HTML conventions. If your project already uses single quotes (common in older JavaScript style guides), choose single. The key is consistency — pick one and Biome will enforce it across all files.

Enabling recommended rules turns on Biome's curated set of high-confidence lint rules covering correctness, security, and style. These are rules where the benefit clearly outweighs false positives. You can then add or override individual rules on top of the recommended baseline.

Add an "ignore" array to your biome.json: { "files": { "ignore": ["dist/**", "node_modules/**", "*.min.js"] } }. Biome also respects .gitignore by default in newer versions.