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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

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

Introduction Union and Intersection Types Discriminated Union Types Discriminated Unions in Practice State Machines 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 chapter dives deep into one of the most confusing topics in TypeScript - generics. We’ll start by discussing function types to make sure that you have a solid understanding of ...