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May 2020
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We've featured several state management libraries in the Radar before, but XState takes a slightly different approach. It's a simple JavaScript and TypeScript framework for creating finite state machines and visualizing them as state charts. It integrates with the more popular reactive JavaScript frameworks (Vue.js, Ember.js, React.js and RxJS) and is based on the W3C standard for finite state machines. Another notable feature is the serialization of machine definitions. One thing that we've found helpful when creating finite state machines in other contexts (particularly when writing game logic) is the ability to visualize states and their possible transitions; we like the fact that it's really easy to do this with XState's visualizer.