I had to spend one of my support credits to figure this out so I’m sharing the details here in the hope that it will save someone else the trouble…
Sencha’s Getting Started with Components using NPM doc explains how to
npm install the package and add them to the requires section in app.json
but it’s not terribly clear that some of the components require additions to
the workspace.json file too. I had to add the path for the ext-google package
to the packages > dir list in that file to get the map component working.
Grrrr…..