Hi Steven,
Pluggable widget are React based, so you have learn how to use it, instead of $ (jquery). Not all libs are easy to implement in React (though possible) It would be wise to find a good React Lib for data pickers.
For example https://reactdatepicker.com/#example-date-range
Or https://github.com/airbnb/react-dates
Walk trough the how to pluggable widget and you will find your way.
Enjoy the journey!
Andries
Hi Steven,
There a plenty of examples in this tutorial
https://docs.mendix.com/howto/extensibility/pluggable-widgets
Samples are in TypeScript
import classNames from "classnames"; // import npm module
import { myFunction } from"./utils";
Cheers, Andries