v8 and other htmlservice changes meant I had to make a few small changes to cGoa. The good news it’s easier to use than ever, and supports a few new services too. It’s best to look at the service list on github, as that’ll be kept up to date. Here’s a reminder of how to use it.
There are a couple of OAuth 2 Google Apps Script libraries out there but cGoa from Bruce Mcpherson is the easiest one I used, particularly, when it comes to setup. Bruce’s post has more details including various ways you can use the library.
Source: Goa v8 changes and enhancements