[davetron5000]

I like Ruby! Ruby has types. They just aren't enforced by a compiler.

[gavmor]

Well, yeah, then what's the point?

[Lio]

You can use a static analysis tool to check Ruby types ahead of time (still not a compiler) or provide information for tooling.

Alternatively you use them at runtime to check the correctness of data, which I don't think you can usually do with say Typescript where the typing information is for the most part compiled away[1].

1. I may be out of date on this but when I last looked at runtimes that could take Typescript directly they just threw the typing away. You just didn't need to use the tsc compiler first.

[davetron5000]

I'm OK not using a compiler. Used one for years and am good on that for now. I like writing Ruby.