Bun v0.0.45

Source available — automated, not human-reviewed

Component: bun · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes

📄 .MD

⚡ Improvements 3 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Bun bun-v0.0.45. Source highlight: This release is mostly bug fixes.

Visit Bun Official Site ↗ Official Release Source ↗ All Bun Releases 📡 Bun RSS

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.

⚡ Performance & Enhancements (3)

less noisy: no more file paths unless relevant and package executables are shown on `bun run` instead of `bun`
Before the description for a script was `"script"`, now it's the actual script
If the first part of the script is `NODE_OPTIONS=".*"` (or any variation of `NODE_OPTIONS`), it's stripped out from the description. This is slightly nicer for larger repos that set `--max-heap-size`

🔧 Bug Fixes & Patches (6)

[bun run] Fix bug when running `bun run yarn` or a script that runs `yarn --prod`
[bun run] Fix a bug with how quotes & spaces were being passed through
[bun create] Fix npm install/yarn install for people using Volta (symlinks)
[bun run] Fix invoking `node` when using Volta (symlinks)
[JSX parser] Match esbuild behavior for JSX multi-line string literals and improve test coverage
[JSX parser] Fix regression with decoding JSX entities (e.g. `&`) and improve test coverage

📄 View Raw Release Notes (Original Developer Log)

To upgrade: ```bash bun upgrade ``` This release is mostly bug fixes. ### Improved fish completions - less noisy: no more file paths unless relevant and package executables are shown on `bun run` instead of `bun` - Before the description for a script was `"script"`, now it's the actual script - If the first part of the script is `NODE_OPTIONS=".*"` (or any variation of `NODE_OPTIONS`), it's stripped out from the description. This is slightly nicer for larger repos that set `--max-heap-size` `bun` <img width="702" alt="CleanShot 2021-11-05 at 01 40 27@2x" src="https://user-images.githubusercontent.com/709451/140482463-7267b7cf-4a89-4dfe-a852-4f96fd2dffb7.png"> `bun run`: <img width="739" alt="CleanShot 2021-11-05 at 01 43 47@2x" src="https://user-images.githubusercontent.com/709451/140482837-099adbc0-279d-44ab-9d7d-9c0726aa013c.png"> ### Bug fixes - [bun run] Fix bug when running `bun run yarn` or a script that runs `yarn --prod` - [bun run] Fix a bug with how quotes & spaces were being passed through - [bun create] Fix npm install/yarn install for people using Volta (symlinks) - [bun run] Fix invoking `node` when using Volta (symlinks) - [JSX parser] Match esbuild behavior for JSX multi-line string literals and improve test coverage - [JSX parser] Fix regression with decoding JSX entities (e.g. `&`) and improve test coverage - [JS parser] Decode input as WTF-8 instead of UTF-8. Insert a unicode replacement character for invalid unicode codepoints. Amongst other things, this fixes an error that occurred on `require("faker")` - [installer] Auto-detect when an Apple Silicon device is running on Rosetta 2 and download the arm64 version instead **Full Changelog**: https://github.com/Jarred-Sumner/bun/compare/bun-v0.0.44...bun-v0.0.45

← Older Version Bun bun-v0.0.44 Newer Version → Bun bun-v0.0.46