Book Image

Progressive Web Apps with React

By : Scott Domes
Book Image

Progressive Web Apps with React

By: Scott Domes

Overview of this book

For years, the speed and power of web apps has lagged behind native applications. Progressive Web Apps (PWAs) aim to solve this by bridging the gap between the web apps and native apps, delivering a host of exciting features. Simultaneously, React is fast becoming the go-to solution for building modern web UIs, combining ease of development with performance and capability. Using React alongside PWA technology will make it easy for you to build a fast, beautiful, and functional web app. After an introduction and brief overview of the goals of PWAs, the book moves on to setting up the application structure. From there, it covers the Webpack build process and the process of creating React components. You'll learn how to set up the backend database and authentication solution to communicate with Firebase and how to work with React Router. Next, you will create and configure your web app manifest, making your PWA installable on mobile devices. Then you'll get introduced to service workers and see how they work as we configure the app to send push notifications using Firebase Cloud Messaging. We'll also explore the App Shell pattern, a key concept in PWAs and look at its advantages regarding efficient performance. Finally, you'll learn how to add of?ine capabilities to the app with caching and confirm your progress by auditing your PWA with Lighthouse. Also, you'll discover helper libraries and shortcuts that will help you save time and understand the future of PWA development.
Table of Contents (21 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Welcome to Webpack

Our goal for this section is to take the JavaScript sitting in our script tag in our index.html (the line responsible for rendering our "Hello from React!") and move that to a JavaScript file in the src folder, which is then bundled and injected into the HTML by Webpack.

It sounds complicated, but it’s simpler than it sounds, thanks to the magic of Webpack. Let’s get started:

  1. First, we need to install Webpack:
yarn add [email protected]

If you check the package.json, you should see Webpack listed under our dependencies. For this book, I’ll be using version 3.5.4; if you run into any inexplicable problems, try specifying this version with yarn add [email protected]:

  1. Now, we need to tell Webpack what to do. Let’s start by moving our React code into the src folder. Inside chatastrophe/src, create a file called index.js.
  2. Then, type in the following code:
console.log(‘hello from index.js!’);

Our goal is to get this greeting to display in our browser console.

  1. Okay, let’s try out Webpack. In...