This is a modern webpart built on the GA version of the SharePoint Framework. The ready to deploy SharePoint Add-in package is available under the sharepoint/solution folder.
git clone the repo
npm i
npm i -g gulp
gulp
This package produces the following:
Renders a calendar from any list available on the selected site. Site, List, Start, End, Event Title,Event Details and Calendar Theme are user-definable in the web part properties.