Introduction
A brief overview of Ultracite and how it works.
Ultracite is a fast, intuitive and simple development tool that brings automated code formatting and linting to your JavaScript / TypeScript projects. Built on top of Biome (a Rust-based code formatter and linter), Ultracite provides a robust, preconfigured setup optimized for modern web development.
Install Ultracite quickly by running:
Then follow the Usage guide to get started.
How does Ultracite work?
Once set up, Ultracite runs mostly in the background — automatically formatting your code and applying fixes every time you save your files. Because Biome is so fast, even on large projects, running Ultracite’s checks is extremely fast and can comfortably run on every save without lag. This means you can focus on building and shipping instead of manually correcting style issues or debugging runtime errors.
What is Biome?
Biome is an all-in-one toolchain for code formatting and linting. Biome, written in Rust, combines the functionality of tools like Prettier (code formatter), ESLint (linter), and Stylelint into a single fast binary. Ultracite leverages Biome’s speed and capabilities, providing a preset of rules and settings tailored for modern TypeScript projects.
Wait so is Ultracite just a big JSON file?
Yep pretty much. Biome has a massive amount of configuration options so you can customize it to your liking. We've found a configuration that works well for modern web development on tools like Next.js and Vite; and exported it into a JSON file that you can pull into your project.
It is highly opinionated and strict, ensuring maximal type safety and code quality out-of-the-box.
