DEPRECATED. Please see: https://github.com/CircleCI-Public/cci-demo-javascript-express for the current demo application for JS / Node on CircleCI 2.0
CircleCI Demo Application: React 
This is an example application showcasing how to run JavaScript/React on CircleCI 2.0.
You can follow along with this project by reading the following doc: https://discuss.circleci.com/t/getting-started-react/8488