Sorbet was written in C++ and is a great piece of work, Stripe did a great job with it. It does have some issues as soon as someone gets into the magic weeds wi

Sorbet was written in C++ and is a great piece of work, Stripe did a great job with it. It does have some issues as soon as someone gets into the magic weeds with metaprogramming like Rails does. Disclaimer: Working at Square, have friends at Stripe, enjoy both type checkers.