What is polymorphism in TypeScript?

What is polymorphism in TypeScript?

Polymorphism in TypeScript allows methods to do different things based on the object it is acting upon. Can I explain with an example?

Yes, please provide an example.

Sure! Consider a base class Animal with a method makeSound(). Subclasses like Dog and Cat can implement this method differently. For instance, Dog might return 'Bark' while Cat returns 'Meow'. This way, you can call makeSound() on any Animal object and get the appropriate sound.

How do I implement this in code?

You can define the classes like this:

class Animal {
    makeSound(): string {
        return '';
    }
}

class Dog extends Animal {
    makeSound(): string {
        return 'Bark';
    }
}

class Cat extends Animal {
    makeSound(): string {
        return 'Meow';
    }
}

Now, you can create instances of Dog and Cat and call makeSound() on them.