Code instrumentation with c8

[einSelbst]

All examples for coverage I could find use babel for code instrumentation. Now with nextjs 12 moving away from babel what would be a good approach to get code coverage working?

[einSelbst]

ok, will try some more with nyc.

[einSelbst]

Re-opening this because I can not figure out how to use cypress with c8, which seems to be an interesting option post babel. It makes use of v8 built-in coverage.
https://v8.dev/blog/javascript-code-coverage

If anyone knows how to get this working with cypress I'm thankful for all hints.