Getting Started with TypeScript

What is TypeScript?

TypeScript is a strongly typed programming language that builds on JavaScript. It adds optional static typing and class-based object-oriented programming to the language.

Why TypeScript?

Here are the key benefits:

• Type Safety — Catch errors at compile time, not runtime
• Better IDE Support — Autocompletion, refactoring, navigation
• Self-Documenting Code — Types serve as documentation
• Easier Refactoring — The compiler catches breaking changes

A Quick Example

Here's a simple function in TypeScript:

interface User {
  name: string;
  age: number;
  email: string;
}

function greetUser(user: User): string {
  return `Hello, ${user.name}! You are ${user.age} years old.`;
}

const user: User = {
  name: "Bekmuhammad",
  age: 25,
  email: "bekmuhammadmamadiyev90@gmail.com",
};

console.log(greetUser(user));

Getting Started

To start using TypeScript in your project:

npm install -D typescript @types/node
npx tsc --init

This creates a tsconfig.json file where you can configure the compiler options.

Key Concepts

TypeScript is a must-learn for any modern JavaScript developer. Start small, and gradually add types to your existing projects.