Book Image

Progressive Web Application Development by Example

By : Chris Love
Book Image

Progressive Web Application Development by Example

By: Chris Love

Overview of this book

Are you a developer that wants to create truly cross-platform user experiences with a minimal footprint, free of store restrictions and features customers want? Then you need to get to grips with Progressive Web Applications (PWAs), a perfect amalgamation of web and mobile applications with a blazing-fast response time. Progressive Web Application Development by Example helps you explore concepts of the PWA development by enabling you to develop three projects, starting with a 2048 game. In this game, you will review parts of a web manifest file and understand how a browser uses properties to define the home screen experience. You will then move on to learning how to develop and use a podcast client and be introduced to service workers. The application will demonstrate how service workers are registered and updated. In addition to this, you will review a caching API so that you have a firm understanding of how to use the cache within a service worker, and you'll discover core caching strategies and how to code them within a service worker. Finally, you will study how to build a tickets application, wherein you’ll apply advanced service worker techniques, such as cache invalidation. Also, you'll learn about tools you can use to validate your applications and scaffold them for quality and consistency. By the end of the book, you will have walked through browser developer tools, node modules, and online tools for creating high-quality PWAs.
Table of Contents (12 chapters)

Auditing web pages with Sonar

Similar to Lighthouse, the Microsoft Edge team has also released a new site linting tool called Sonar ( Like Lighthouse, it is an open source node module that serves as a testing harness to execute rules over a web page.

The two tools offer similar testing abilities, but also offer a different set of abilities and test batteries. Both provide a default starting point to execute a base set of tests on a page. Both can be customized with your own configurations and even extended with custom tests and reports.

Unlike Lighthouse, Sonar is not built into the browser developers tools. At least not yet, and I only say that because I could see the tool being integrated into Edge at some point, like Lighthouse is in Chrome.

Sonar also differs because it can execute tests in either Microsoft Edge, Chrome, or other testing libraries....