Bun APIs don't work with next

[brrock]

Link to the code that reproduces this issue

https://github.com/brrock/buntestapis/

To Reproduce

Start the app with bun run --bun dev and use the form the api route should fail to compile even though I'm using bun and have bun types installed

Current vs. Expected behavior

I expect this to just use the bun runtime and compile and work simply work but throws this error Error:

 ✓ Compiled /api/s3write in 377ms
 ⨯ ./app/api/s3write/route.ts:2:1
Module not found: Can't resolve 'bun'
  1 | // app/api/s3write/route.ts
> 2 | import { S3Client } from "bun";
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  3 | import { NextResponse } from 'next/server';
  4 |
  5 | // Initialize S3 client

Provide environment information

Operating System:
  Platform: linux
  Arch: x64
  Version: kernel 6.12.9-arch1-1
  Available memory (MB): 15763
  Available CPU cores: 4
Binaries:
  Node: 23.6.0
  npm: 10.9.2
  Yarn: N/A
  pnpm: 9.15.4
Relevant Packages:
  next: 15.1.6 // Latest available version is detected (15.1.6).
  eslint-config-next: 15.1.6
  react: 19.0.0
  react-dom: 19.0.0
  typescript: 5.7.3
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

Runtime

Which stage(s) are affected? (Select all that apply)

next dev (local)

Additional context

No response

[luudv]

It seems there are many bugs with the new version. I had to go back to v15.1.5

[brrock2]

It seems there are many bugs with the new version. I had to go back to v15.1.5

it has always been a problem

[brrock]

It seems there are many bugs with the new version. I had to go back to v15.1.5

@luudv do have example