[naiyt]

For me it would have the same things that make Typescript appealing:

- Full access to a large and mature ecosystem (one that Crystal doesn't quite have)

- The ability to gradually add typing to an existing Ruby codebase. No need to rewrite an entire application. Just gradually add types to new code and during refactors.

If I was starting a new project I would definitely be considering Crystal, but I still feel like something like this would be great. Typescript has been a godsend for my frontend development life, and I would love to have something like this for my backend Ruby development.

[creyes]

I've been working with Lucky and working with a bit of Crystal - it's still not quite there yet. When we were working on a recent release of Lucky we found a kinda breaking in the compiler that the team fixed pretty quickly but it still shows just how new it is. I'm optimistic for 1.0 though

That said, Flow style gradual/optional typing in Ruby would be awesome