Set of components to allow describing native widgets as React components and rendering them natively. It allows to wrap native APIs (imperative mutative) with declarative immutable APIs of React.
React Native replaces the DOM renderers with native renderers which allows people to render platform
<div>/<span>. Other than that, you get to use the exact same React API that you already know (even down to the event bubbling). You can bridge to things that are only available on the platform, and can in general make higher performance granular building blocks that cannot be accomplished with web technology (such as components that decode images more efficiently or with different concurrency models). As with everything, JSX is not required to take advantage of this - and you can use any of the compile-to-js languages that you use with React today.