Summary

After a conversation with Nevkontakte (here), the current goal is to make go1.19 support without generics possible by dropping generic code. To accomplish this, I'm adding a new directive, gopherjs:purge, which will remove parts of the original code without replacing them with something in the overlay/override code. The native code will have the directive for some declaration or specification identifier and both the overlay and original will have that decl/spec removed from it.

This will allow us, in a follow up ticket, to add things into the natives that we want to remove, e.g. type Pointer[T any] struct {} in atomic. This will also help with imports for variable type constraints, e.g. type Foo[T cmp.Ordered](value T).

Dependancies

• Update FuncKey to handle generics #1255
• Breakup parseAndAugment method #1256
• Extending directive checking #1257