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Mastering Reactive JavaScript

You're reading from   Mastering Reactive JavaScript Building asynchronous and high performing web apps with RxJS

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Product type Paperback
Published in May 2017
Publisher Packt
ISBN-13 9781786463388
Length 310 pages
Edition 1st Edition
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Author (1):
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Erich de Souza Oliveira Erich de Souza Oliveira
Author Profile Icon Erich de Souza Oliveira
Erich de Souza Oliveira
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Table of Contents (12) Chapters Close

Preface 1. What Does Being Reactive Mean? FREE CHAPTER 2. Reacting for the First Time 3. A World Full of Changes - Reactive Extensions to the Rescue 4. Transforming Data - Map, Filter, and Reduce 5. The World Changes Too Fast - Operators to Deal with Backpressure 6. Too Many Sources - Combining Observables 7. Something is Wrong - Testing and Dealing with Errors 8. More about Operators 9. Composition 10. A Real-Time Server 11. A Real-Time Client

A Real-Time Server

In the last chapter, we covered an advanced topic in functional reactive programming, called the transducer. Transducers enable us to create a composition of transformations of data. One of the main advantages of transducers is the possibility of making your data transformations independent from the source of your data; with the transducers-js library we can use transducers on observables and in any iterable object.

With transducers, we can:

  • Write better tests as it make it easy to decouple the source of the data to the transformations applied to it
  • Improve the performance of our code; as it skips the need for any intermediate iterable
  • Improve the maintainability of your code, when we compose transformations to create new transformations we can reuse them throughout our codebase, and avoiding code repetition is a good idea

Throughout this book, we have learned:

  • What are observables?
  • What is...
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