I've just discovered an interesting function in Chrome, to show which parts of the code are not being used in the running page/application.
More details here: Chrome devtools Coverage
I wasn't able to find and alternative for Firefox, does anybody know if it exists natively in the browser, or if there are any extensions capable of the same functionality?
Thanks
The simple but unfortunate answer is no, Firefox (version 82) doesn't include a code coverage tool and there isn't any Firefox extension allowing to do that so far.
There is only an enhancement request asking for adding a code coverage feature like the one in Chrome.