[sambal]

Do TS and Kotlin support them now? Last I checked TS was relying on string comparisons and Kotlin wasn’t even bothering outside sealed classes

[sixbrx]

TS is a bit more powerful than it appears here, because string literal values are recognized at the type level, so can be checked by the compiler when distinguishing cases. See for example: "Discriminated Unions" at https://www.typescriptlang.org/docs/handbook/advanced-types.....