Can types be extended in TypeScript?

Can types be extended in TypeScript?

Yes, in TypeScript, you can extend types using interfaces and type aliases. Would you like an example?

Yes, please provide an example of extending a type.

Sure! You can extend an interface like this:

interface Animal {
    name: string;
}

interface Dog extends Animal {
    breed: string;
}

This way, Dog has both name and breed properties.

What about using type aliases? Can they be extended too?

Type aliases cannot be extended in the same way as interfaces, but you can create a new type that combines existing types using intersections. For example:

type Animal = { name: string; };
type Dog = Animal & { breed: string; };