Book Image

Mastering Immutable.js

By : Adam Boduch
Book Image

Mastering Immutable.js

By: Adam Boduch

Overview of this book

Immutable.js is a JavaScript library that will improve the robustness and dependability of your larger JavaScript projects. All aspects of the Immutable.js framework are covered in this book, and common JavaScript situations are examined in a hands-on way so that you gain practical experience using Immutable.js that you can apply across your own JavaScript projects. The key to building robust JavaScript applications using immutability is to control how data flows through your application, and how the side-effects of these flows are managed. Many problems that are difficult to pinpoint in large codebases stem from data that’s been mutated where it shouldn’t have been. With immutable data, you rule out an entire class of bugs. Mastering Immutable.js takes a practical, hands-on approach throughout, and shows you the ins and outs of the Immutable.js framework so that you can confidently build successful and dependable JavaScript projects.
Table of Contents (23 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Summary


This chapter introduced you to the conceptual foundation of Immutable.js. Immutable data is how we prevent unwanted side-effects. With Immutable.js collections, everything results in new data. This includes changing the collection somehow—these are called persistent changes. It also includes shaping the data in order to do something with it—these are called sequence transformations.

The typical Immutable.js pattern involves chaining collection method calls together—the persistent changes and sequence transformations—ending with a side-effect.

In the next chapter, we'll write some code that creates Immutable.js collections.