ClaudeHonoFeb 26, 2026, 1:00 PM

v4.12.3

A condensed section focused on the key takeaways first.

Original Post

OpenAI Claude

Quick Digest

Summary

A condensed section focused on the key takeaways first.

claudeenmodel: claude-sonnet-4-20250514

Hono v4.12.3 - Bug Fixes for Validator, JWT, and Type System

hono jwt validator typescript bugfix memory-leak form-data

Key Points

Fixed JWT memory leak and timestamp handling
Removed DOM type dependencies from ClientResponse
Corrected form data parsing type bugs

Summary

Hono v4.12.3 is a maintenance release focusing on critical bug fixes across the validator, JWT middleware, and TypeScript type system. This release addresses memory leaks, type safety issues, and improves overall stability.

Key Points

Validator improvements: Fixed type difference bug in form data parsing
JWT security enhancements: Replaced bitwise operations with Math.floor for safer timestamp handling and prevented memory leaks by avoiding options object mutation
Type system fixes: Removed DOM type dependencies from ClientResponse and corrected middleware types
JWT variables: Fixed JwtVariables integration with ContextVariableMap
New contributors: Welcome to @YevheniiKotyrlo and @hmnd for their first contributions

Full Translation

Translations

A translation section that keeps the flow of the original article.

claudejamodel: claude-sonnet-4-20250514

v4.12.3

変更内容

fix(validator): フォームデータ解析における型差分バグを修正 by @EdamAme-x in #4753
fix(jwt): 安全なタイムスタンプのためにビット演算ORの代わりにMath.floorを使用 by @EdamAme-x in #4754
fix(jwt): ContextVariableMapのJwtVariablesを修正 by @yusukebe in #4764
fix(types): ClientResponseとrequestメソッドからDOM型依存を削除 by @YevheniiKotyrlo in #4768
fix(types): ミドルウェア型を修正 by @hmnd in #4774
fix(jwt): optionsオブジェクトの変更を避けることでメモリリークを防止 by @EdamAme-x in #4759

新しいコントリビューター

@YevheniiKotyrlo が #4768 で初回コントリビューション
@hmnd が #4774 で初回コントリビューション

完全な変更履歴: v4.12.2...v4.12.3

コントリビューター

yusukebe、hmnd、その他2名のコントリビューター