I've never managed to figure out how to configure extensions through the Firefox JS APIs, but installing an add-on using the internal APIs isn't too hard. I do it in my VimFX config.js[0]. Hope this is useful.

0: https://ba.ln.ea.cx/src/marsironpi/dotfiles/tree/common/.vim...

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probablyrobert a day ago | parent [-]

oh that is very helpful, thanks for sharing :)

	▲	MarsIronPI a day ago \| parent [-]
		No problem, thanks for making Glide. I'm looking forward to trying it. Also, feel free to take inspiration from anything else you might stumble upon in my configs.