Turbopack incorrectly resolves imported functions when wrapping into private method calls

[kossnocorp]

Link to the code that reproduces this issue

https://github.com/kossnocorp/turbopack-private-bug

To Reproduce

1. Set up and run the app:

git clone git@github.com:kossnocorp/turbopack-private-bug.git
cd turbopack-private-bug
pnpm install
pnpm run dev # pnpm exec next dev --turbo

2. Open the app in a browser and click the "Click me" button.

Current vs. Expected behavior

It should correctly resolve fooBar function and not to throw an error:

Uncaught ReferenceError: fooBar is not defined
    at page.tsx:15:7
    at #wrap (page.tsx:20:12)
    at HelloWorld.hi (page.tsx:14:15)
    at onClick (page.tsx:9:44)

Provide environment information

Operating System:
  Platform: linux
  Arch: x64
  Version: #1 SMP Tue Nov 5 00:21:55 UTC 2024
  Available memory (MB): 30862
  Available CPU cores: 32
Binaries:
  Node: 22.13.1
  npm: 10.9.2
  Yarn: N/A
  pnpm: 9.15.4
Relevant Packages:
  next: 15.2.0-canary.53 // Latest available version is detected (15.2.0-canary.53).
  eslint-config-next: N/A
  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)

Turbopack

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

next dev (local)

Additional context

No response

[kdy1]

Investigation

SWC is correct here. https://play.swc.rs/?version=1.11.4&code=H4sIAAAAAAAAA02QzU7DMBCE736KUbk4FWru9EcCJNQLZw6Ig%2BtsVKuOt1rbtKjKu%2BMmaeFka2fm86xnORKsdxTSbKmU644sCReU8Tt1jB6tcIeZkLFXx93QMr8YueuLms6JJBh%2FxdTzOZ6bBj%2BcBUKevk1IsNwQ9iRUwoK0J7gYMyFx8RyFm2wJ81rReXijodZkn9DmYJPjgC13pCtcFAoqxFRY3vMHi2%2BwvjXWxbHeINAJ27usq0d8flXLkhRKWQJWu5xSYXJ49c4e1pcx9kdc7J2u%2Bs2goqNVPQY2S9UrZb2J8R9%2F6HQNDBeU3VxcPJzEHKc64xgwniTp8e90NRQC%2BuEsWGDM2N0T3qatb8ipt93pyd3%2FAkUizZO7AQAA&config=H4sIAAAAAAAAA1WQvW7DMAyE9zyFwTmoAw8ZsjbIlilPQCh0o1Z%2FICm0RuB3j2THcbqJ3%2FF0ON43TQPfYuDQ3MuzDAlZiF9zITIExb9CQIdEYtgmhe2iqlRJOdNExlkARf4irSaSbtd1sHDGIH1k%2F56QhY7U20CnyJ8ORU6W3FWe%2F76imNDom68g61NkvcTMhmrYTTXJoW1J%2FIfc2jRbtquBc1Drp13MGj2qNfCUx38NXIxS93p0UrtNHHy8ZkfruepJ5pZ7WJdssP2weCdk5bw4IYefEH8DbMYHRewXq38BAAA%3D