Biome

Biome is a fast, open-source toolchain for web projects, written in Rust, that formats and lints JavaScript, TypeScript, JSX, JSON, CSS, GraphQL and HTML with one tool and one config. Its formatter scores 97% compatibility with Prettier, its linter has 567 rules drawn from ESLint, TypeScript ESLint and other sources, and a single check command runs both. Design engineers tired of keeping separate Prettier and ESLint configs get one Rust-built tool that needs no configuration to start and can format malformed code as they type.