TypeScript - What is the difference between type and interface?

Type vs Interface: When to Use Each One?

While there is some overlap between types and interfaces, there are some key differences that make one a better choice than the other in specific scenarios.

Use types when:

• You need to create a union or intersection type.
• You need to define a tuple type.
• You need to create a type alias that cannot be represented by an interface.
• You need to define a type that represents a complex data structure.

Use interfaces when:

• You need to define the shape of an object.
• You need to enforce contracts in your code.
• You need to extend or implement interfaces in your code.
• You need to define optional properties or readonly properties.

In general, types are more flexible than interfaces, but interfaces are more specific.

Types can represent more complex data structures and allow for more advanced type manipulation. Interfaces, on the other hand, are more rigid and allow for stricter type checking and code contracts.

Cheer! 🍺