As far as the API is concerned, the main thing you get is a combinator library for generating whatever random data structures you want to use. Working with Arbitrary types (which represent sets of random objects) makes it easy to write reusable functions for generating your test inputs. A library like that could probably be used along with Go’s fuzzing framework fairly easily?

I still think the usual combinators (map, filter, chain, and oneOf, to use fast-check’s names) can be a bit awkward, so I’m writing a new property testing library for JavaScript that hopefully works a bit nicer. (Experimental and not published yet.)