Forio Contour provides a core set of common visualizations that you can see in the gallery, and it's easy to extend if you want to add your own customizations. Plus, it's free and open source.
Forio Contour uses the popular D3 engine and adds a set of intuitive abstractions so you can easily create graphs and charts.
Want to learn more? goto Forio Contour
Built with NodeJs 12. Other versions should also work.
Start by doing the following
$ npm install
$ npm run lint
$ npm run test
Note -- the "dist" directory has been removed from git. To build it, do the following:
$ npm run build