Utility Types

Welcome to the next lesson! In this lesson, you’ll learn about utility types, built-in TypeScript features that simplify and enhance type transformations. Let’s get started!

What Are Utility Types?

Utility types are pre-defined types provided by TypeScript to perform common type transformations, such as making properties optional, readonly, or picking specific properties from a type.

Example:

type User = {
  name: string;
  age: number;
  email: string;
};

type PartialUser = Partial<User>;

let user: PartialUser = { name: "Alice" }; 
// Only 'name' is provided