Cyclejs - A functional and reactive JavaScript framework for predictable code

Functional enables “predictable” code, and Reactive enables “separated” code. Cycle.js apps are made of pure functions, which means you know they only take inputs and generate predictable outputs, without performing any I/O effects. The building blocks are reactive streams from libraries like xstream, RxJS or Most.js, which greatly simplify code related to events, asynchrony, and errors.