Turbopack: ReferenceError "Cannot access 'globalThis' before initialization" with OpenPGP.js static import

[tnunamak]

Link to the code that reproduces this issue

https://github.com/tnunamak/turbopack-openpgp-repro

To Reproduce

1. Clone https://github.com/tnunamak/turbopack-openpgp-repro
2. npm install
3. npm run dev
4. Visit http://localhost:3000/api/test - Works
5. npm run dev:turbo
6. Visit http://localhost:3000/api/test - Fails

Current vs. Expected behavior

Current Behavior

Static imports of OpenPGP.js fail with Turbopack but work with webpack.

  ReferenceError: Cannot access 'globalThis' before initialization
      at [project]/app/api/test/route.ts [app-route] (ecmascript) (app/api/test/route.ts:2:0)

Expected Behavior

Static imports should work with Turbopack as they do with webpack, since:

• OpenPGP.js docs show static imports as the standard usage
• globalThis is a standard ES2020 feature
• Works in Node.js, webpack, and other bundlers

Provide environment information

Operating System:
  Platform: linux
  Arch: x64
  Version: #27-Ubuntu SMP PREEMPT_DYNAMIC Tue Jul 22 17:01:58 UTC 2025
  Available memory (MB): 127934
  Available CPU cores: 24
Binaries:
  Node: 24.3.0
  npm: 11.4.2
  Yarn: N/A
  pnpm: 10.13.1
Relevant Packages:
  next: 15.4.6 // Latest available version is detected (15.4.6).
  eslint-config-next: N/A
  react: 19.1.1
  react-dom: 19.1.1
  typescript: 5.9.2
Next.js Config:
  output: N/A

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

Turbopack

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

next dev (local)

Additional context

No response

_PACK-5256

[github-actions]

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