TypeScript Basics

Catch bugs before your code runs with TypeScript. Learn how TypeScript adds a type system on top of JavaScript, how type inference and annotations work, how to describe objects with interfaces and type aliases, how union types and narrowing help, why strict null checks matter, and the basics of generics.

Tutwoo is an independent learning provider. This course is general awareness training written from published official guidance. It does not replace training required for your specific job, and it is not an accredited qualification.

© 2026 Tutwoo UK Limited. This course was created in-house by Tutwoo and is our original work. It is for your own learning only: please do not copy, share, record or resell it.