I've created the package
desmos-react to provide a React wrapper around the Desmos graphing calculator, making it easy to create interactive demos declaratively. I also added TypeScript typings (although they haven't been merged yet).
Here's an example of using it in a video 👇 You can get the source for this demo from https://github.com/ysulyma/ex-desmos. This demo also shows off the upcoming captions support—you can enable captions by clicking on the gear in the bottom.