Biome 2.5.4

Breaking: Biome 2.5.4 ships today. The latest patch brings HTML parser performance gains, critical formatter fixes, and a new YAML formatter feature.

What Changed

• HTML parser faster — Improved performance via keyword-based tag lookups, reducing string comparisons
• No more comment moves — On-type formatting no longer shoves comments before if statements into their bodies
• Label detection fixed — noLabelWithoutControl now correctly handles text interpolation in Astro, Svelte, and Vue
• No more hang — biome check --write --unsafe no longer loops forever when applying noCommentText fixes
• Curried test formatting — test.each, it.each, and friends now break arguments correctly at line width
• Stale sockets cleaned — Biome daemon now removes old Unix sockets from previous versions

New Feature

• YAML formatter — Basic block properties formatting now supported
• Sorted classes — useSortedClasses now handles important-suffix classes in sort_v4

Housekeeping

• Inference engine migrated to Salsa framework
• Dependencies updated: pnpm 11.11.0, regex 1.13.0, jiff 0.2.32

Upgrade now via npm install -D @biomejs/biome or your package manager of choice.