Yep. I have plenty of experience in languages that use C-style syntax, enough to easily understand code written in other languages that occur nearby in the syntactical family tree. I'm not steeped in JS enough to know the weird gotchas of the type system, or know the standard library well, etc. But I can read the code fine.

If I'd asked an AI coding tool to write something up for me in Haskell, I would have no idea if it had done a good job.