# Opinion: Bun's Rust rewrite with AI explained

https://blog.pragmaticengineer.com/the-pulse-what-can-we-learn-from-buns-rapid-rust-rewrite-with-ai/

Bun, a JavaScript runtime, is being rewritten from Zig to Rust. Memory bugs in Zig led to crashes and leaks. The rewrite is now underway with Fable available globally.

Publisher: The Pragmatic Engineer — Opinion / commentary.

Image: https://storage.ghost.io/c/39/f8/39f85cc7-8637-40fc-a57c-f45754453717/content/images/2026/07/data-src-image-e6450cb0-ef41-4b2a-9217-6bcdd2c7a816.png

Image: https://storage.ghost.io/c/39/f8/39f85cc7-8637-40fc-a57c-f45754453717/content/images/2026/07/data-src-image-cd28edee-cd89-4840-b174-c33834d838df.png

Image: https://storage.ghost.io/c/39/f8/39f85cc7-8637-40fc-a57c-f45754453717/content/images/2026/07/data-src-image-15c365dd-95ef-4cf9-a4f3-0f0e6f7e6312.png

#bun #rust #javascript #memory

---

Canonical URL: https://qwibbit.com/q13279

Created: 2026-10-20T18:42:08.363915+00:00

Last edited: 2026-10-20T18:42:08.363915+00:00

Board: 3

Origin: Syndicated

Original source: https://blog.pragmaticengineer.com/the-pulse-what-can-we-learn-from-buns-rapid-rust-rewrite-with-ai/