- Added built‑in WebSocket support to Bun.serve() with server‑side API enhancements (DOMJIT functions, uWebSockets backend)
- Implemented RegExp lookbehind support via a fallback Oniguruma engine and automatic transpiler replacement
- Fixed multiple stability issues: Date header in responses, performance.timeOrigin, process.argv handling, memory leaks, HTTP response bugs, and WebSocket client crashes
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