biome-developer

This skill provides general development best practices, common gotchas, and Biome-specific patterns that apply across different areas of the codebase. Use this as a reference when you encounter unfamiliar APIs or need to avoid common mistakes.

Example: Svelte's on:click event handler syntax is legacy (Svelte 3/4). Modern Svelte 5 runes mode uses regular attributes. Unless users specifically request it, don't implement legacy syntax support.

When working with enum variants (like AnySvelteDirective), check if there are also non-enum types that need handling:

Biome に取り組む際の一般的な開発のベスト プラクティスと一般的な注意点。よくある間違いを回避し、バイオーム固有のパターンを理解し、技術的なヒントを学ぶために使用します。例:<example>Biome の AST および構文ノードの操作</example><example>文字列抽出メソッドの理解</example><example>埋め込み言語とディレクティブの処理</example> ソース: biomejs/biome。