SWC Incorrect parsing of nested <> generics in fat arrow functions

[mateusmirandaalmeida]

What version of Next.js are you using?

12.0.1

What version of Node.js are you using?

v16.6.1

What browser are you using?

Chrome

What operating system are you using?

Windows

How are you deploying your application?

Vercel

Describe the Bug

when updating the next from 11 to 12 it starts to have problem compiling generic parameters

Expected Behavior

Error: error: Unexpected token <T>. Expected jsx identifier

To Reproduce

create a simple class that receives something generic

class MyClass<T> {};

[lucaskolecha]

I have the same problem, I tried to look for a solution, but so far I haven't been able to. I'm really looking forward to being able to upgrade to version 12. but with this problem I won't be able to.

[MrWangJustToDo]

same error

[balazsorban44]

This issue has been automatically locked due to no recent activity. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.