Sometimes, we want to merge two enums in TypeScript.
In this article, we’ll look at how to merge two enums in TypeScript.
How to merge two enums in TypeScript?
To merge two enums in TypeScript, we can use the spread operator.
For instance, we write
enum Mammals {
Humans = "Humans",
Bats = "Bats",
Dolphins = "Dolphins",
}
enum Reptiles {
Snakes = "Snakes",
Alligators = "Alligators",
Lizards = "Lizards",
}
const Animals = { ...Mammals, ...Reptiles };
type Animals = typeof Animals;
to create the Mammals and Reptiles enums.
Then we combine them in the Animals object by spreading the entries of Mammals and Reptiles into it.
And finally, we create the Animals type by using the typeof operator on Animals.
Conclusion
To merge two enums in TypeScript, we can use the spread operator.
