Correct way to Load Temporary Add-on on launch firefox

[obfuscatus]

Hello,
Is there anyone successfully load Temporary Add-on on launch firefox like argument --load-extension=${extensions} when launch chrome?
I found web-ext but I can not find how to use web-ext with puppeteer?

[adam-s]

Yes, this is an important question. Since Puppeteer is missing a lot of functionality in Firefox using extensions is a good way to overcome that. Simply create an extension with a set of tools. However, using unsigned extensions is futile.

[summergan]

so, how to load extensions when launch firefox

[fregante]

This seems to be how: #5532 (comment)