Vue.js not detected on moz-extension:// pages

[dessant]

WebExtensions can serve local pages at moz-extension://*, but Vue does not seem to be detected on them. The same happens with add-on preferences at about:addons.

Tested with Firefox 55 and Vue.js devtools 3.1.5.

[clarkbw]

This is by design at the moment. In Firefox content scripts are only injected in web pages (and some of the "about:" pages, the non privileged ones). Without the content scripts the detection cannot work.

[dessant]

@clarkbw, you're right. A related issue for Chromium is marked as WontFix: https://bugs.chromium.org/p/chromium/issues/detail?id=30756.