Ollie-UI is a JavaScript starter-kit for web peoples to rapidly prototype and wire-frame Single Page Applications. It's great for data -> based (API driven) front-end user experiences.
Dive into the documentation and learn how Ollie-UI works under the hood. Documentation is broken up into major sections and drills-down into code examples for each.
Ollie-UI gets regular updates and also has a pretty ambitious road-map for 2020-21. Keep up with the latest changes, updates and most voted upon features.