Impact Score: 5/10
Bun v0.0.44
Source available — automated, not human-reviewed
Component: bun · Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
⚡ Executive Summary (TL;DR)
Bun bun-v0.0.44. Source highlight: Bun works with Next.js 12 now. Before, it only supported 11.1.2. This includes support for React 18 (`react@alpha`). React Server Components is not supported yet, but it will be. I promise :)
Who Does This Impact? (Role-Based Analysis)
💻 Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
📊 Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
⚙️ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
🔧 Bug Fixes & Patches (4)
- (`bun dev`) Fixed a mistranspilation when using `require` from app code to a bundled module (e.g. `require("relay-devtools")`)
- (`bun bun`) Fixed an issue with symlinked workspace packages when using `alwaysBundle` that prevented them from being correctly imported if enough levels of indirection were added
- Fixed undefined behavior when invalid UTF-8 codepoints were inside source code text printed in an error message
- (`bun-macro-relay`) Worked around a bug that could cause it to not correctly import `graphql` depending on the environment
📄 View Raw Release Notes (Original Developer Log)
To upgrade:
```bash
bun upgrade
```
## Next.js 12
Bun works with Next.js 12 now. Before, it only supported 11.1.2. This includes support for React 18 (`react@alpha`). React Server Components is not supported yet, but it will be. I promise :)
<img width="600" alt="CleanShot 2021-11-03 at 03 11 49@2x" src="https://user-images.githubusercontent.com/709451/140042287-59e72802-4684-4023-be3e-10f4834963f8.png">
## Other stuff
- (`bun run`) ZSH completions should auto-install correctly now. This will automatically apply when you run `bun upgrade`
- (`bun dev`) Fixed a mistranspilation when using `require` from app code to a bundled module (e.g. `require("relay-devtools")`)
- (`bun bun`) Fixed an issue with symlinked workspace packages when using `alwaysBundle` that prevented them from being correctly imported if enough levels of indirection were added
- Fixed undefined behavior when invalid UTF-8 codepoints were inside source code text printed in an error message
- (`bun-macro-relay`) Worked around a bug that could cause it to not correctly import `graphql` depending on the environment
- (`bun create`) bumped the hardcoded Next.js version set to `12.0.2`
- Bun.js: rename `Bun.sleep` -> `Bun.sleepSync`
**Full Changelog**: https://github.com/Jarred-Sumner/bun/compare/bun-v0.0.42...bun-v0.0.44