What is the difference between types and interfaces in TypeScript?

What is the difference between types and interfaces in TypeScript?

In TypeScript, both types and interfaces can be used to define the shape of an object, but they have some differences. Types are more flexible and can represent primitive types, unions, and intersections, while interfaces are specifically for object shapes and can be extended.

Can you give me an example of when to use an interface instead of a type?

Sure! Use an interface when you want to define a contract for classes or when you need to extend multiple interfaces. For example, if you have a class that implements an interface, it ensures that the class adheres to the structure defined by the interface.

Are there any limitations to using types?

Yes, types cannot be merged like interfaces can. If you define a type with the same name multiple times, it will result in an error, whereas interfaces can be declared multiple times and will merge their properties.

So, should I always prefer interfaces over types?

Not necessarily. It depends on your use case. If you need the flexibility of unions or want to define a primitive type, use types. For object-oriented designs, interfaces are often more suitable.