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v4.12.22

supertone-oss-archive/supertonicv4.12.22May 22, 2026by yusukebe

AI Summary

Hono v4.12.22 updates vitest to v4, fixes MIME charset specification, and adds msgpack support as a compressible content type.

Key Highlights

  • Updated vitest to v4
  • Fixed MIME charset specification per content type
  • Added msgpack support for compression

Breaking Changes

  • Updated vitest to v4

New Features

  • Improved compression handling for msgpack
  • Better MIME type charset handling

Full Release Notes

## What's Changed
* chore: update vitest to v4 and cleanups by @BlankParticle in https://github.com/honojs/hono/pull/4952
* fix(mime): specify charset parameter per MIME type instead of mechanical detection by @renatograsso10 in https://github.com/honojs/hono/pull/4912
* fix(compress): respect Accept-Encoding when encoding option is set by @LeSingh1 in https://github.com/honojs/hono/pull/4951
* fix(deno): echo negotiated WebSocket subprotocol in upgrade response by @ATOM00blue in https://github.com/honojs/hono/pull/4955
* feat: add msgpack as a compressible content type by @na-trium-144 in https://github.com/honojs/hono/pull/4957

## New Contributors
* @renatograsso10 made their first contribution in https://github.com/honojs/hono/pull/4912
* @LeSingh1 made their first contribution in https://github.com/honojs/hono/pull/4951
* @ATOM00blue made their first contribution in https://github.com/honojs/hono/pull/4955
* @na-trium-144 made their first contribution in https://github.com/honojs/hono/pull/4957

**Full Changelog**: https://github.com/honojs/hono/compare/v4.12.21...v4.12.22