fix: fixes an issue where the type imports could not be resolved

[lukasholzer]

🎉 Thanks for submitting a pull request! 🎉

Summary

Fixes an issue where the types could not be resolved in the next-runtime

---

For us to review and ship your PR efficiently, please perform the following steps:

• Open a bug/issue before writing your code 🧑‍💻. This ensures
  we can discuss the changes and get feedback from everyone that should be involved. If you`re fixing a typo or
  something that`s on fire 🔥 (e.g. incident related), you can skip this step.
• Read the contribution guidelines 📖. This ensures
  your code follows our style guide and passes our tests.
• Update or add tests (if any source code was changed or added) 🧪
• Update or add documentation (if features were changed or added) 📝
• Make sure the status checks below are successful ✅

A picture of a cute animal (not mandatory, but encouraged)

[eduardoboucas]

For posterity sake, could you add some context to why importing from .js instead of .d.ts fixes the issue?

[lukasholzer]

For posterity sake, could you add some context to why importing from .js instead of .d.ts fixes the issue?

I have no idea. IMHO, it should work with .d.ts as well, but this was a good try-and-error thing by modifying the node_modules and seeing the types getting picked up. Had not had the time to investigate deeper.