All three languages come with formatting and linting. Markdown supports frontmatter, GFM, CJK writing and embedding capabilities.
It took us a while, but we did it! JavaScript plugins are in developer preview. Start experimenting! We also added support for loading plugins via npm packages.
Biome support for Tailwind is now 4-aware. Sorting of Tailwind classes is stable. New lint rules now understand your system design and suggest classes that fit your project.

