Imagine I have these two different interfaces:
interface Bird {
type: 'bird';
flyingSpeed: number;
}
interface Horse {
type: 'horse';
runningSpeed: number;
}
Now, the challenge is to create a new interface that extends either the Bird or Horse interface. It's known that this can be achieved by using the type keyword. The question arises if it's possible to do so using an interface instead, like this:
interface Animal extends Bird | Horse {
name: string
}
In this scenario, I would approach it differently.
I'd start by defining a generic interface for all animals called Animal, and then create specific subspecies based on that.
You don't necessarily need the AnimaSpecies type; you can directly specify the animal type in Bird and Horse.
type AnimaSpecies = 'bird' | 'horse';
interface Animal {
name: string,
type: AnimaSpecies;
}
interface Bird extends Animal {
type: 'bird';
flyingSpeed: number;
}
interface Horse extends Animal {
type: 'horse';
runningSpeed: number;
}
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