TypeScript: free course

JavaScript with types: catch mistakes before your code runs. Used by most modern web apps built with React, Angular and Node.js.

7 lessons · free · no account needed · code examples, practice questions and videos

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Lessons

1. 1 TypeScript introduction: what it is, why teams use it, setup, basic types, type inference and compiling
2. 2 Types, interfaces and functions: object types, optional and readonly properties, unions, narrowing, generics and utility types
3. 3 Typed functions, optional and default parameters
4. 4 Union types, literal types and narrowing
5. 5 Generics and utility types
6. 6 Classes, enums and organising a TypeScript project
7. 7 TypeScript in real projects: classes, modules, async APIs, runtime validation, React and Node.js, tsconfig and migrating JavaScript