[sakagami0]

Wow I made the same thing that I put v1 up a couple days ago.

https://github.com/tetranoir/presi

A main difference is I tried to get rid of having a separate line to create the Type and I tried to get rid of having to learn a new libary's api as much as possible.

[eyelidlessness]

This looks interesting too, but the syntax fells really weird to me.

[sakagami0]

A goal was you can treat it Exactly like an "Interface". I agree it looks totally nonsensical but I think of it as a text replacement.