bun
https://github.com/oven-sh/bun
Zig
Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one
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- Issues
- spawn: child's stdout silently lost (no error, sometimes exit 0) past ~5k concurrent children on macOS
- JSC performance: InadequateCoverage waits for 100 identical OSR exits before reoptimization
- AsyncLocalStorage context is not preserved when `unhandledRejection` is emitted
- `console.error` on a DOMException prints the full legacy constant table (35 lines vs Node's 11)
- `ibm_db` v4 async `open()` and `query()` never resolve or invoke callbacks on Windows x64 with Bun 1.4.0, while synchronous APIs work in Bun and the same async APIs work in Node 24.
- install.globalStore: bun postinstall moves @oven platform binary out of the shared store
- #35083 shipped only in 1.4.0, but affected users run embedded 1.3.14 — backport to 1.3.x, or document that compiled binaries must be rebuilt
- install.globalStore: @hookform/resolvers cannot resolve an explicitly installed Zod adapter dependency
- `Bun.serve` disables React Fast Refresh in a workspace, because it resolves React only from the root directory
- `Bun.serve` HMR gives `null` to a module that reads an import cycle, and the page throws
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