I have a reach JS app that uses react router. As a stand alone it works perfectly. I am now trying to use it in a SharePoint hosted app. I created the app using create-react-app from github. When I build it and copy the resultant .js and .css file to the SharePoint script folder in my (Visual Studio 2015) SharePoint hosted add-in project, and run it, I get "react-empty: 1" in the root div. I suspect this has to do with react router because I when I disabled routing and had a direct reference to my start component, it worked.
Has anyone gotten react routing working in a SharePoint hosted app?