Using Firefox 63.0, dom.webcomponents.customelements.enabled and dom.webcomponents.shadowdom.enabled are both set to true by default.
I don't know about dom.webcomponents.shadowdom.report_usage but it's still false.
I tried the counter and 2048 examples (on 62.0.3 and 63.0) that are now working on a local environment.
It doesn't seem to work on CodeSanbox though...
Using Firefox 63.0,
dom.webcomponents.customelements.enabled
anddom.webcomponents.shadowdom.enabled
are both set totrue
by default.I don't know about
dom.webcomponents.shadowdom.report_usage
but it's stillfalse
.I tried the counter and 2048 examples (on 62.0.3 and 63.0) that are now working on a local environment. It doesn't seem to work on CodeSanbox though...