Composing Schemas to Include ID in User DTO

const UnsavedUserDto = S.struct({
    name: S.string.pipe(
        S.nonEmpty({
            message: () => "Name cannot be empty",
        }),
    ),
});

const UserDto = S.union(UnsavedUserDto, S.struct({ id: S.UUID }));

type UserDto = S.Schema.To<typeof UserDto>;

const user: UserDto = {
    id: "123",
    name: "John",
};