Windows: module resolution fails for paths containing a con/ directory segment (reserved device name) #64653

🔎 Search Terms

Windows, CON, reserved device name, module resolution, TS2307, export *, realpath, CreateFile

🕗 Version & Regression Information

• This changed between versions 6.0.3 and 7.0.2

@typescript/native: 7.0.2 and 7.1.0-dev.20261006.1 (both fail)

typescript: 6.0.3 (works)

OS: Windows 11 (win32 x64)

Also verified: linux native binary on WSL works on the same files

⏯ Playground Link

No response

💻 Code

Reproduction repository: https://github.com/itrapashko/tsgo-windows-con-path

🙁 Actual behavior

node_modules/repro-pkg/index.d.ts(1,15): error TS2307: Cannot find module './con/foo.js' or its corresponding type declarations.
src/main.ts(1,10): error TS2305: Module '"repro-pkg"' has no exported member 'Foo'.

With skipLibCheck: true, the TS2307 is suppressed and only the consumer-facing TS2305 remains (the star re-export silently contributes nothing).

Renaming the directory from con to other makes the error go away under the same TS7 native build.

🙂 Expected behavior

Same as TypeScript 6 and as TS7 native on Linux: ./con/foo.js resolves to ./con/foo.d.ts, and Foo is exported.

Additional information about the issue

No response