Thanks for the suggestion and linked code example. The integration into fast-check looks quite simple.

Added to the ever growing list of good possible additions 👍 In the meantime, feel free to give it a try yourself, we would love some contributions to the project.

I'm excited to try it out! Would probably end up updating https://github.com/jasikpark/fuzz-prettier or adding a JS based fuzzer to withastro/compiler in addition to my golang attempts..

Just updated to use the jest integration in https://github.com/jasikpark/fuzz-prettier, it's so nice! Excited to update to jazzer.js 2.0.0 to get the tighter TypeScript integration 👍

How do I need to update my jest config to remove ts-jest? I thought the release notes had mentioned that..

You should just need to remove it. babel-jest is the default and can handle Typescript but won't do type checking. #635 should mean that ts-jest will work properly again though and should be merged soon.