Mastering TypeScript

TypeScript adds static typing to JavaScript, making your code more reliable and maintainable. Let's explore its key features.

Type System Basics

TypeScript's type system includes:

• Basic types (string, number, boolean)
• Arrays and tuples
• Objects and interfaces
• Unions and intersections

Advanced Types

Learn about advanced type features:

• Generics
• Utility types
• Mapped types
• Conditional types

Best Practices

1. Enable strict mode
2. Use interfaces for object shapes
3. Leverage type inference
4. Document with JSDoc comments

Real-World Examples

Here's a practical example:

interface User {
  id: string;
  name: string;
  email: string;
}

function getUserById(id: string): Promise<User> {
  return fetch(`/api/users/${id}`).then(res => res.json());
}