I've gone back and forth on this over the years, but I think I've come to like the naming scheme of Module.Type+Extras.swift for general extensions in #Swift.
Since they're not named (like ObjC’s categories) I find there’s no need for a unique +Name per defining framework, and since types can be pretty generically named, I like the module prefix for clarity.
This also gives me an affordance to Quick Open to like `Text+` and probably land on the right file (as opposed to the SDK interface) too.
