Book Image

Angular for Enterprise-Ready Web Applications - Second Edition

By : Doguhan Uluca
Book Image

Angular for Enterprise-Ready Web Applications - Second Edition

By: Doguhan Uluca

Overview of this book

This second edition of Angular for Enterprise-Ready Web Applications is updated with in-depth coverage of the evergreen Angular platform. You’ll start by mastering Angular programming fundamentals. Using the Kanban method and GitHub tools, you’ll build great-looking apps with Angular Material and also leverage reactive programming patterns with RxJS, discover the flux pattern with NgRx, become familiar with automated testing, utilize continuous integration using CircleCI, and deploy your app to the cloud using Vercel Now and GCloud. You will then learn how to design and develop line-of-business apps using router-first architecture with observable data anchors, demonstrated through oft-used recipes like master/detail views, and data tables with pagination and forms. Next, you’ll discover robust authentication and authorization design demonstrated via integration with Firebase, API documentation using Swagger, and API implementation using the MEAN stack. Finally, you will learn about DevOps using Docker, build a highly available cloud infrastructure on AWS, capture user behavior with Google Analytics, and perform load testing. By the end of the book, you’ll be familiar with the entire gamut of modern web development and full-stack architecture, learning patterns and practices to be successful as an individual developer on the web or as a team in the enterprise.
Table of Contents (19 chapters)
15
Another Book You May Enjoy
16
Index

Debugging RxJS

There are two major strategies to debug and get information about what's happening inside an RxJS pipe:

  1. Tap into the event stream and console log the event data at a particular point in the stream
  2. Execute breakpoint debugging in dev tools

Let's start with using the tap operator.

Tapping an RxJS Event Stream

In Chapter 6, Forms, Observables, and Subjects, we introduced the RxJS tap operator as a way to direct the flow of user input from our search input's stream of change events, and eventually call our doSearch function. When an RxJS stream doesn't seem to be behaving as you'd expect, you can combine the tap operator and console.log to log each event's data, so you can see it over time. Since tap captures the data in the stream based on where it falls in the order of operations, once added to the stream, you can simply use VS Code's line movement keyboard shortcuts to move it around and test the flow...