I am so excited about this!! Ruby tooling is already pretty good, but we can do better. I will try to contribute. Now we just need types
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Depending on a library that uses ducktyping (like any sane library following the Ruby conventions)? Good luck writing a wrapper for it. Or just disable type checking.
This goes so much against the Ruby vibe that I advise you to just go and use Rust instead if you hate Ruby that much that you want to butcher it with types.
Ruby has a strong history and tradition of TDD/unit testing. This is partially a crutch for its lack of static type analysis. Ultimately checking for bugs before running code is very useful