When should I use types or interfaces in TypeScript?

When should I use types or interfaces in TypeScript?

You should use interfaces when you want to define the shape of an object and allow for extension. Use types for more complex types or unions.

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

Sure! If you have a user object with properties like name and age, you can define it with an interface like this: interface User { name: string; age: number; }.

What about using types? Can you explain that?

Absolutely! You can use types for creating unions or more complex types. For example: type ID = string | number; allows you to use either a string or a number as an ID.

Are there any performance differences between types and interfaces?

Generally, there are no significant performance differences. The choice between them is more about design and use cases than performance.