enum Mammals {
Humans = 'Humans',
Bats = 'Bats',
Dolphins = 'Dolphins',
}
enum Reptiles {
Snakes = 'Snakes',
Alligators = 'Alligators',
Lizards = 'Lizards',
}
const Animals = {
...Mammals,
...Reptiles,
}
type Animals = Mammals | Reptiles