As an occasional Javascripter, I've gone looking for this several times, and each time been bemused to discover it isn't there (probably just as an instantiatab

As an occasional Javascripter, I've gone looking for this several times, and each time been bemused to discover it isn't there (probably just as an instantiatable EventTarget). Better package management might help, but some things are fundamental enough that they belong in the core library. I'm pretty certain this is one of them.