Handling the flow of asynchronous data streams has always been a challenging task. Callbacks offer the quick solution. Then came promises which made it easier to write and maintain code around such data streams. Reactive programming is another take on the problem. With implementations in languages like .net, java, scala, JavaScript etc, with big names like Google, Microsoft, Netflix actively supporting and maintaining implementations of the idea in these languages, the style of programming is here to stay.
JS community has been appreciating the ease it brings in given the asynchronous nature of the language. Angular has adopted it as a core library, React-redux uses it. It’s safe to bet that the javascript implementation, RxJS if used in the right way can help in many ways.