Summary & Key Takeaways ​

• Bun v1.4.4 fixes 271 issues and addresses 544 community upvotes.
• bun fmt is now 3x to 6x faster than oxfmt.
• bun check sees 1.4x to 7.8x speed improvements on large projects.
• bun install now supports Yarn Berry lockfiles and is up to 3.2x faster for hoisted installs from a warm cache.
• Bun.SQL uses up to 48% less CPU per query and gains new features like query.cancel() and user-defined functions.
• WebSocket handling in Bun.serve is rewritten to behave like npm's ws on Node.js.
• JavaScriptCore upgrade brings 54x faster toLocaleString and faster Headers iteration.
• The dev server features a redesigned error overlay.

Our Commentary ​

Bun keeps pushing. The sheer volume of fixes and performance gains in a minor release is wild. I'm particularly interested in the bun fmt speedup; that's a daily driver for many. The Bun.SQL improvements are also a big deal for database-heavy applications. It feels like they're just relentlessly chipping away at every possible bottleneck. We're seeing a pattern here, and it's impressive.