Book Image

Learn React with TypeScript 3

By : Carl Rippon
Book Image

Learn React with TypeScript 3

By: Carl Rippon

Overview of this book

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.
Table of Contents (14 chapters)

Chapter 8: React Redux

  1. Is the type property in action objects required? And does this property need to be called type? Can we call it something else?

The type property is required in the action objects and must be called type.

  1. How many properties can the action object contain?

As many as we like! It needs to include at least one for the type property. It can then include as many other properties as we need in order for the reducer to change the state but this is generally lumped in one additional property. So, generally an action will have one or two properties.

  1. What is an action creator?

An action creator is a function that returns an action object. Components invoke these functions in order to make a change to the state in the store.

  1. Why did we need Redux Thunk in our Redux store in our React shop app?

By default, a Redux store can't manage asynchronous action creators...