Summary  
Type aliases let you assign custom names to complex or recurring types—such as object shapes or unions—and reuse them throughout your code for improved readability and maintainability.

General domain of usage  
User data modeling

Type aliases in TypeScript allow you to create custom names for specific types. This feature lets you define a type once and reuse it throughout your code, making your codebase easier to read and maintain. The basic syntax for a type alias uses the `type` keyword, followed by the alias name, an equals sign, and the type definition. You can use type aliases for primitive types, union types, object types, and more.

// Define a type alias for a user object
type User = {
  id: number;
  name: string;
  isAdmin: boolean;
};

// Use the type alias in a function parameter
function greetUser(user: User): string {
  return `Hello, ${user.name}!`;
}

const admin: User = { id: 1, name: "Alice", isAdmin: true };

console.log(greetUser(admin)); // Output: Hello, Alice!

You should use **type aliases** when you have a type definition that appears multiple times or is complex enough to benefit from a descriptive name. **Type aliases** can make your code more readable by replacing long or repetitive type definitions with a single, meaningful name. They are especially helpful when working with union types, complex object structures, or when you want to clarify the intent behind a type used in your application.

**Which statement about type aliases in TypeScript is correct?**

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Type Aliases

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Type Aliases