Is it possible to use web-ext on add-on extracted XPI source code (no required manifest.json found!)?

Add-ons Add-on Support
#1

Hello,

I am inspecting the XPI file in Mozilla directory. In my machine, which is Fedora 25 - Firefox 52, it is

~/.mozilla/firefox/415m46wm.default/extensions

I then extract the XPI files into a folder, and then using web-ext to test the addon, but none of these add-on has the manifest.json in the top level, making them impossible to run.

#2

web-ext works with add-ons that use WebExtensions, the newest add-ons API. Many add-ons don’t use it at the moment, though many are in the process if being migrated to it.