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What is New in TypeScript 3

In its six years of existence, TypeScript has continued to move forward and mature nicely. Is TypeScript 3 a significant release for React developers? What exactly are the new features that we have to add to our toolkit in TypeScript 3? These questions will be answered in this chapter, starting with the tuple type and how it can now be successfully used with the rest and spread JavaScript syntax, which is very popular in the React community. We'll then move on to the new unknown type and how it can be used as an alternative to the any type. Further more, we'll break TypeScript projects up into smaller projects with the new project references in TypeScript. Finally, we'll go about defining default properties in a strongly-typed React component that has improved in TypeScript 3.

By the end of the chapter, we'll be ready to start learning...

Key benefits

Learn the latest and core features of React such as components, React Router, and suspense

Dive into TypeScript 3 and it`s core components such as interfaces, types aliases, tuples, generics and much more.

Build small-to-large scale single page applications with React, Redux, GraphQL and TypeScript

Description

React today is one of the most preferred choices for frontend development. Using React with TypeScript enhances development experience and offers a powerful combination to develop high performing web apps. In this book, you’ll learn how to create well structured and reusable react components that are easy to read and maintain by leveraging modern web development techniques. We will start with learning core TypeScript programming concepts before moving on to building reusable React components. You'll learn how to ensure all your components are type-safe by leveraging TypeScript's capabilities, including the latest on Project references, Tuples in rest parameters, and much more. You'll then be introduced to core features of React such as React Router, managing state with Redux and applying logic in lifecycle methods. Further on, you'll discover the latest features of React such as hooks and suspense which will enable you to create powerful function-based components. You'll get to grips with GraphQL web API using Apollo client to make your app more interactive. Finally, you'll learn how to write robust unit tests for React components using Jest. By the end of the book, you'll be well versed with all you need to develop fully featured web apps with React and TypeScript.

What you will learn

Gain a first-hand experience of TypeScript and its productivity features

Transpile your TypeScript code into JavaScript for it to run in a browser

Learn relevant advanced types in TypeScript for creating strongly typed and reusable components.

Create stateful function-based components that handle lifecycle events using hooks

Get to know what GraphQL is and how to work with it by executing basic queries to get familiar with the syntax

Become confident in getting good unit testing coverage on your components using Jest

What do you get with Print?

Instant access to your digital eBook copy whilst your Print order is Shipped

Paperback book shipped to your preferred address

Download this book in EPUB and PDF formats

Access this title in our online reader with advanced features

DRM FREE - Read whenever, wherever and however you want

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Just Some Guy Sep 02, 2022

This is a great book - one of the best React books I've read, actually (and I've read A LOT of them). It's also a good book for learning TypeScript hands-on by way of real-world examples. To be clear, I would _highly_ recommend you learn ES6, React, and TypeScript on your own before approaching this book. But even so, the book does a respectable job of explaining both TS and React to even a newcomer (assuming you already know ES6/CSS/HTML5).The first few chapters focus on TypeScript itself. While it's certainly doesn't explain every detail of the language, it's a good intro that starts simple and will give you enough of a foundation to build on.From there it dives into React and various popular libraries (Router, Redux, Axios, GraphQL, etc.) - with most of the book taking a step-by-step approach to building a few simple demo apps (typical stuff). Each chapter includes abundant code samples that are clear and easy to follow. There are screenshots mixed in when appropriate, and the writing is totally straight forward and easy to digest from start to finish.This was published in 2018, and I was worried it would already be outdated (as I read it in 2022). I was happy to find that it still holds up pretty well. The code was built using React 16.7 - and is indeed primarily built around class-based React Components and the associated lifecycle methods (i.e. the old way). BUT the GOOD news is, ~1/3 of the sample code actually does use Function components, and there are several good examples built around the most important hooks (useState, useEffect, and useReducer).Yes, Class Components are dead – but odds are you'll run into some legacy TypeScript that uses them anyway, so this is still good stuff to know even today.My only complaint about this book is that it really doesn't delve into anything useful around fullstack development (nothing around mocking a Node server, using containers, deploying to any kind of server, etc.). That said, there are plenty of other books on those topics - so it's not the end of the world.Final word: This is a great book for anyone who wants to learn React TypeScript development - and it still holds up pretty well 5 years later. As long as you know what to expect, it's a great learning resource.

Amazon Verified review

J. Smith Jan 19, 2019

This book has you installing tools and coding almost from the first paragraph. You learn by reading then doing. The order of introduction is good - as is the pacing. Example code is simple and abundant. The scope is focused to just what you need to come up to speed. It's an easy read.The introduction to TypeScript coming from JavaScript is the best I have seen. It does not cover all the features of TypeScript. Instead, it gives you just enough to be comfortable and understand what TypeScript is for.This book does not teach you to program. It does not teach you web development. It is targeted at developers who have some background with JavaScript and browser development and want to come up to speed quickly on React and Typescript.

M. Bürschgens Dec 07, 2019

When you are to learn modern SharePoint UI development you need a combination of TypeScript and React that is pretty hard to learn with the official tutorials if you don't know either of them. SharePoint tutorials require knowledge of TypeScript and React, TypeScript tutorials are only about TypeScript and React tutorials are React with pure JavaScript. This book is the fastest way to get the basic knowledge for SharePoint UI development so that you can continue with the SharePoint specific topics.The reviews mentioning that the book is already outdated are irrelevant for SharePoint since the package versions Microsoft recommends for SharePoint development are *even more* outdated.

A. Le Dec 23, 2018

My book arrived sooner than I have expected. I am an experienced web developer but have not worked with React or Typescript before. I like how the author explains the technical aspects of react that I can easily understand. To get the most of this book, you must at least try to install react using npm or yarn on your own first, then this book will be the light bulb.

Amazon Customer Feb 25, 2019

Really good book which takes you to react through typescript. It teaches you both, typescript and react. It misses to give details of behind the scene working of react, but still, it is best you have in the market in my opinion. Just one stop for both.

Learn React with TypeScript 3: Beginner's guide to modern React web development with TypeScript 3

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Learn React with TypeScript 3

What is New in TypeScript 3

Technical requirements

Tuples

The unknown type

Project references

Setting up an example

Default JSX properties

Summary

Questions

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Learn React with TypeScript 3: Beginner's guide to modern React web development with TypeScript 3

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