I've recently read an article on Mozilla's blog about how support for "legacy" extensions will soon be phased out in favor of WebExtensions.
How can I tell whether the extensions I have installed are WebExtensions or "legacy" extensions (as defined by the aforementioned blog post)?
https://addons.mozilla.org/ doesn't seem to show this information.
I know I can browse to my FireFox profile on Windows by going to
%AppData%\Mozilla\Firefox\Profiles and in my
<profile>\extensions folder I have some
.xpi files which are just zip files. But, if I open them, what should I look for inside in order to determine whether they are WebExtensions or not?
I'm mainly interested in knowing which extensions I have that I could potentially lose if the developers don't update/rewrite them as WebExtensions. If there is an easier way than the idea I had of checking in the extensions folder, please let me know.