React.PropTypes is deprecated

[rafkhan-wg]

https://reactjs.org/docs/typechecking-with-proptypes.html

[jseminck]

It seems like these repos are not maintained anymore:

"A solution for building reusable components for d3 charts, NOT MAINTAINED."

[zmiller346]

To get the files to work, you need to go into any applicable or broken file, and add:

var PropTypes = require('prop-types');
var createReactClass = require('create-react-class');

To the top along with any other require statements, then you have to change the create class line to:

module.exports = createReactClass({

And finally, go to any instance of PropTypes with React in front of it (not things like createElement, keep those the same), and remove the React. or _react. in front of it. It's kind of tedious, but I got it all working with that.