Compare to Flow runtime?

[svr93]

Flow has different methods helpful for enum usage: https://flow.org/en/docs/enums/using-enums/#toc-methods

1. cast
2. isValid

It will be wonderful to include some helpers with strict type safety in TS:

v = SomeEnum.cast(raw) // v type inference: SomeEnum | null

[Jack-Works]

Yes, it's a useful feature but I'm worried about how ADT enums will work with those mehods.