Luau already has some notion of nominal types to deal with the fact that the Roblox API is basically a ton of C++ classes that have been mapped over via the FFI. Some of these types are totally structurally identical and yet incompatible.
We'd like to afford the same kind of ideas for native Luau code, but we're not there yet.
Super happy to see this released, and also for all the kids getting started programming on Roblox learning that there is a better way than random tag-checked mush :-)
Good on you all!
jwatte|4 years ago