Introduction to TypeScript

TypeScript is a strongly typed programming language that builds on JavaScript, giving you better tooling at any scale.

What is TypeScript?

TypeScript adds additional syntax to JavaScript to support a tighter integration with your editor. It catches errors early in your editor and provides intelligent code completion.

Why TypeScript?

Type Safety: Catch errors at compile time rather than runtime
Better IDE Support: Enhanced autocomplete, navigation, and refactoring
Self-Documenting: Types serve as documentation for your code
Scalability: Makes large codebases more maintainable

Getting Started

Install TypeScript globally:

bash

npm install -g typescript

Create your first TypeScript file:

typescript

function greet(name: string): string {
  return `Hello, ${name}!`
}

console.log(greet('World'))

Compile and run:

bash

tsc hello.ts
node hello.js

TypeScript Configuration

Create a tsconfig.json file:

json

{
  "compilerOptions": {
    "target": "ES2020",
    "module": "ESNext",
    "strict": true
  }
}