Advanced Types Development Tutorials, Guides & Insights

Introduction

TypeScript is a powerful extension of JavaScript that adds static typing to your code, helping to catch errors early and improve overall code quality. One of the most powerful features of TypeScript is its support for generics and advanced types. These tools allow you to create more flexible, reusable, and type-safe code. In this cheatsheet, we’ll explore TypeScript’s generics and advanced types, helping you master complex type systems and take your TypeScript skills to the next level.

function add(a: number, b: number) {
  return a + b; // inferred return type is number
}

let numbers = [1, 2, 3]; // inferred as number[]

const handler = (event: MouseEvent) => {
  console.log(event.button); // inferred as MouseEvent
};

window.onclick = handler;