type check properties

[Pacman99]

Best idea I've come up with to do this is to have yants export a function that generates a type checking pop. This pop will simply have an extension that does nothing but type check a series of values. If there are any problems, yants check functions will throw errors, otherwise the extension can just return an empty attrset. This could be implemented in yants itself.

[blaggacao]

yants already has nestable struct validation, is that what we'd be looking at?

[Pacman99]

Yeah exactly, I don't think pop or yants really has to be changed for this. You can do this manually already by creating a pop that's extension type checks super and just returns back everything as the same. Then that type-checking pop can be a super for another pop where you want attributes type checked.

We can make a convenience function to create such a pop by passing it a yants struct.