New editor build.log error that makes no sense

Question:
Hello All:

I’m seeing a rare build.log error report when I go to publish my website from the Wix editor.

Product:
Wix Editor.

What are you trying to achieve:
Publish without getting an error report that is not real.

What have you already tried:
I’ve tried replicating this, and it is easy: any class with a static variable generates this error on publication.

Yet, there is no warning in the code box. This is standard Javascript, so I’m not sure why it gives the error.

When I publish anyway, it’s fine. And, this is fairly new, on old code around for over a year.

Additional information: