What are the differences between interfaces and type aliases in TypeScript?

What are the differences between interfaces and type aliases in TypeScript?

In TypeScript, interfaces and type aliases are both used to define types, but they have some differences. Interfaces can be extended and implemented, while type aliases cannot. However, type aliases can represent any valid type, including primitives, unions, and tuples.

Can you give me an example of an interface?

Sure! Here's an example of an interface:

interface Person {
    name: string;
    age: number;
}

And what about a type alias?

Here's an example of a type alias:

type Person = {
    name: string;
    age: number;
};

When should I use an interface over a type alias?

Use interfaces when you want to define a contract for classes or when you need to extend types. Use type aliases for more complex types like unions or when you want to create a more readable type definition.