TypeScriptPro

Concepts Errors Blog Challenges

Redirecting to sign in...

TypeScript Pro

The fastest way for JavaScript developers to master TypeScript. From zero to pro with interactive challenges, concept guides, and error references.

Why pay to learn coding in the age of AI?

Concepts

Generics
Mapped Types
Template Literals
Union Types
Intersection Types

Challenges

Warm Up
Easy
Medium
Hard
Extreme

Blog

TypeScript 5.9
TypeScript 7

Errors

TS2322
TS2345
TS2339
TS2304
TS2531

© 2026 Sunny Site Up. All rights reserved. • Imprint