Bun v1.3.10

Bun Blog2026-02-26 14:310 views

Fixes 155 issues (addressing 642 👍). New native REPL, --compile --target=browser for self-contained HTML, TC39 standard ES decorators, Windows ARM64 support, barrel import optimization, and a faster event loop. structuredClone up to 25x faster for arrays, Buffer.slice() 1.8x faster, path.parse() up to 7x faster, fewer closures in bundled output, and upgraded JavaScriptCore with 168x faster deep rope string slicing. Fixes Python asyncio-based MCP servers breaking with Bun.spawn(), plus numerous bugfixes across Node.js compatibility, bun install, the bundler, shell, and Windows.

Source：https://bun.com/blog/bun-v1.3.10

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Bun v1.3.10

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