I did read your article, and it’s actually how I came out with the idea that Elixir had come up with the same idea as TS haha!

I’m sure I’m missing something as I have no doubt you’re by far more knowledgeable than I am, but TS also represents types as sets (semantically, dunno about internal implementation), structural typing seems to inherently map to set theory

For example, about bounded polymorphism the article says “Of course, we can provide syntax sugar for those constraints”: seems like this sugar could be ‘a extends number’ to me, like typescript does. I don’t see how TS does _not_ map to set operations