maxpaj on Tue, 21 Mar 2017 11:17:01
Hi all Mac developers
Chenchen Li on Wed, 22 Mar 2017 02:27:55
According to Debug Office Add-ins on iPad and Mac:
Vorlon.JS is a debugger for web pages, similar to the F12 tools. It is designed to work remotely and it enables you to debug web pages across different devices.
So I think all the debuggers for web pages for Mac could be used to debug the web application of Office add-ins.
Sorry that we are not familiar with Mac and the search results are for iOS, so I suggest you ask on Apple Developer forum and I think there are many Mac developers there could share valuable suggestions.