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All LessonsFree Lessons (4)

Strict types

Introduction No Implicit `any`Fixing `noImplicitAny` Errors The `unknown` Type Strict Null Checks Optionality Strict Property Initialization Non-Null Assertion Operator Exercise in Strictness

Generics

Introduction Function Types Generic Functions Generic Functions Example - Typing `reduce`Generic Interfaces - OOP Perspective Generic Interfaces - FP Perspective Type Argument Constraints Type Constructors Type Argument Propagation

Composing types

Union and Intersection Types

Discriminated Union Types

Discriminated Unions in Practice

Discriminated Unions vs Subtyping

Advanced types

Introduction Conditional Types Introduction Built-in Conditional Types The `infer` Keyword Conditional Types Example - React Component Props Mapped Types Introduction Built-in Mapped Types Type Guards Custom Type Guards Nominal Types

TypeScript in practice

Debugging Errors: Type Assignability

Debugging Errors: Narrowing Types

Debugging Errors: Unintuitive Error Message

React and TypeScript: `useState` Hook

React and TypeScript: `useReducer` Hook

RxJS and TypeScript: `pipe`

Conclusion

Advanced TypeScript Masterclass/

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Introduction

Introduction

We'll cover the following...

This is the most important chapter of this course. It will teach you how to create new types from existing types.

First, we look at the ...