Does Blitz.js work with the Bun runtime?

[eodeluga]

I didn't see any discussion in search results but if there are some, I would appreciate being pointed there 👍

[tamish-max]

I would treat Bun runtime support for Blitz as experimental at best, not something I would rely on in production.

Reason: Blitz sits on top of Next.js plus other Node-heavy tooling (Prisma, native deps, build tooling, auth/session pieces). Even if Bun runs part of the stack, the rough edges usually show up in dev/build/runtime integration rather than in plain JS execution.

My practical recommendation would be:

• Node LTS for the actual runtime (blitz dev, blitz build, blitz start)
• Bun is probably safer as a package manager / script runner experiment than as the production runtime

If you want to test it anyway, I would verify at least these before trusting it:

1. blitz dev
2. blitz build && blitz start
3. Prisma generate / migrate
4. auth/session flows
5. file uploads / any native deps

So: maybe partially workable, but I would not call it officially supported.