Required Versions:

Ionic: 5.3.0
Cordova 8.0.0
Node 10.15.3

In order to install node-sass, you need VS 2017 or the VS 2017 Build tools. If you don't have VS2017 and do have VS2019 then node-gyp will use the wrong version even if the 2017 build tools are installed. so be warned.