Looks very similar to <a href="https://github.com/asm-products/buckets" rel="nofollow">https://github.com/asm-products/buckets</a>
FYI, there's also a browser version:
<a href="https://github.com/cosmicjs/cosmicjs-browser" rel="nofollow">https://github.com/cosmicjs/cosmicjs-browser</a><p>An example React app that uses the Cosmic JS browser client:
<a href="https://github.com/tonyspiro/react-flux-cosmicjs" rel="nofollow">https://github.com/tonyspiro/react-flux-cosmicjs</a>