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Intermediate

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Advanced TypeScript Masterclass
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Discover advanced TypeScript concepts: Gain insights into compiler flags, generic types, and discriminated unions. Delve into writing error-free code and mastering complex error messages with confidence.

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Overview

Content

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Are you using TypeScript, but feel like you’re not making the most out of it? Do you find some advanced TypeScript concepts confusing? Do you get lost looking at complex type errors? If you answered “yes” to any of these questions, then this course is for you! It introduces you to the world of advanced TypeScript concepts including: compiler flags for catching more errors, generic types, and how to compose types with discriminated unions. After finishing this course, you’ll feel more confident in your TypeScript skills. You will be able to write types that detect whole classes of possible runtime errors at compile time. Typing even the most untypeable JavaScript code will be a no brainer for you, and you’ll be fluent in TypeScript error messages.

Are you using TypeScript, but feel like you’re not making the most out of it? Do you find some advanced TypeScript concepts conf...Show More

Content

42 Lessons11 Challenges

Strict types

9 Lessons

Get familiar with TypeScript's strict type settings to enhance code reliability and safety.

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

9 Lessons

Get started with generics in TypeScript, exploring functions, interfaces, and advanced type constraints.

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

6 Lessons

Work your way through creating and managing complex TypeScript types for business rules.

Introduction

Union and Intersection Types

Discriminated Union Types

Discriminated Unions in Practice

State Machines

Discriminated Unions vs Subtyping

Advanced types

10 Lessons

Grasp the fundamentals of advanced TypeScript types, including conditional and mapped types, and type guards.

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

7 Lessons

Take a closer look at applying TypeScript in debugging and integrating with React and RxJS.

Introduction

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

1 Lessons

See how it works to strengthen productivity with advanced TypeScript, debugging, and complex types.

Conclusion

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Course Author:

Milosz Piechocki

Developed by MAANG Engineers

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