Allowing literal strings and type aliases of unions of strings to represent enums doesn't seem unreasonable. It's the same concept as many other languages with

Allowing literal strings and type aliases of unions of strings to represent enums doesn't seem unreasonable. It's the same concept as many other languages with some extra quotes, ex. https://ocaml.org/docs/data-types#a-simple-custom-type https://ocaml.org/docs/data-types#a-simple-custom-type