ultracite

Zero-config linting and formatting for JS/TS projects. Supports three linter backends: Biome (recommended), ESLint + Prettier, and Oxlint + Oxfmt. Check if ultracite is in package.json devDependencies. Detect the active linter by looking for: Replace bunx with npx , pnpx , or yarn dlx depending on the package manager. check and fix accept optional file paths: bunx ultracite check src/index.ts . bunx ultracite init runs an interactive setup. For non-interactive (CI) use, pass flags: Flags: Init creates config that extends Ultracite presets: Framework presets available per linter: core , react , next , solid , vue , svelte , qwik , remix , angular , astro , nestjs . When writing code in a project with Ultracite, follow these standards. For the full rules reference, see references/code-standards.md . Key rules at a glance: Formatting: 2-space indent, semicolons, double quotes, 80-char width, ES5 trailing commas, LF line endings.