giscus not working without dark mode

[gordonwoodhull]

I just found this, because in my quarto blog, deployed as gh-pages, giscus is not loading and I see in my javascript console the following:

Uncaught ReferenceError: authorPrefersDark is not defined

Any idea?

Originally posted by @feinmann in #12611 (comment)

giscus.ejs refers to a JavaScript variable which will only exist if dark mode is enabled for the page. This code needs to be conditionally included only for dark mode.