Impact Score: 5/10
Bun v0.0.46
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-v0.0.46. Source highlight: Like last release, this one is mostly bug fixes.
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)
- [resolver] Fix a bug with importing modules from packages using `/*.extension` in "exports" package.json and improve test coverage
- [internal] Improve error messages when Bun fails to build due to a missing dependency
- [zsh] zsh completions should more reliably find a directory to put them in
- [zsh] `Command not found: compdef` previously appeared if zsh completions weren't installed. That's fixed now
📄 View Raw Release Notes (Original Developer Log)
To upgrade:
```bash
bun upgrade
```
Like last release, this one is mostly bug fixes.
### Better ZSH completions
The zsh completions now include flags, descriptions of subcommands, and `"scripts"` appear above package bins.
Also:
- Filter out `post.*` and `pre.*` scripts from completions
- Filter out .js files that start with `.` from completions
- Filter out builtin commands from showing up at the top
<img height=450 src="https://user-images.githubusercontent.com/709451/140642872-357891c6-ed84-4b11-83f1-ebf8c4bb7f85.gif" />
The plugin for the typeahead here is [zsh-autocomplete](https://github.com/marlonrichert/zsh-autocomplete)
### macOS Mojave & macOS Catalina support
For absolutely no good reason, Bun was not able to run on any macOS version before macOS 11. Now bun should work for macOS Mojave and macOS Catalina.
However, I don't have a test machine so please let me know if it still doesn't work.
### Bug fixes:
- [resolver] Fix a bug with importing modules from packages using `/*.extension` in "exports" package.json and improve test coverage
- [internal] Improve error messages when Bun fails to build due to a missing dependency
- [zsh] zsh completions should more reliably find a directory to put them in
- [zsh] `Command not found: compdef` previously appeared if zsh completions weren't installed. That's fixed now