Why use RxJS?

Why Use RxJS

First, RxJS and the Observable primitive solve problems that Promises cannot.

A promise is both non-cancelable (in most cases) and can only produce a single value over time. Once a promise has been resolved, that's the end.

Further, Promises are eager, while Observables are lazy.

Second, RxJS enables JavaScript developers to write declarative code for managing synchronous and asynchronous events through a stream of notifications.

Third, RxJS provides a large collection of utility operators (functions) for creating and managing the flow of data in an application.

Framework Agnostic

RxJS is a JavaScript library that can be used with any framework.

RxJS has zero dependencies and provides TypeScript declarations for use with TypeScript projects.