@johndate,
The issue might be due to breaking changes in webpack. You need to import CanvasJSReact to your app using import CanvasJSReact from './canvasjs.react.js'
or var CanvasJSReact = require('./canvasjs.react.js').default;
. Please take a look at this StackBlitz project for an example on doughnut chart in react.
![Doughnut Chart in React](https://canvasjs.com/wp-content/uploads/images/gallery/react-charts/pie/react-doughnut-donut-charts-graphs.png)
—-
Manoj Mohan
Team CanvasJS