Reactive programming is revolutionary. It makes asynchronous programming clean intuitive and robust. Use RxJS 5 to write complex programs in a simple way and master the Observable a powerful data type that substitutes callbacks and promises. Think about your programs as streams of data that change and adapt to produce what you want. Manage realworld concurrency and write complex flows of events in your applications with ease. Take advantage of Schedulers to make asynchronous testing easier. The code in this new edition is completely updated for RxJS 5 and ES6. Create concurrent applications with ease using RxJS 5 a powerful event composition library. Realworld JavaScript applications require you to master asynchronous programming and chances are that youll spend more time coordinating asynchronous events than writing actual functionality. This book introduces concepts and tools that will greatly simplify the process of writing asynchronous programs. Find out about Observables a unifying data type that simplifies concurrent code and eases the pain of callbacks. Learn how Schedulers change the concept of time itself making asynchronous testing sane again. Find realworld examples for the browser and Node.js along the way how about a realtime earthquake visualization in 20 lines of code or a frantic shootemup space videogame Youll also use Cycle.js a modern reactive web framework to make a new breed of web applications. By the end of the book youll know how to think in a reactive way and to use RxJS 5 to build complex programs and create amazing reactive user interfaces. Youll also understand how to integrate it with your existing projects and use it with the frameworks you already know. All the code in this new edition has been thoroughly revised and updated for RxJS 5 ES6 and Cycle.js Unified. What You Need NodeJS 6.x and a modern web browser