Re: [whatwg/dom] Owned weak event listener to prevent memory leak (using EventListenerOptions) (#243)

I like the idea of having the possibility to have weak listeners, it can be useful in some cases, but It can trick you into think it would prevent a leak, but in fact it would cause one.

Lets say you added a event on document to close a popup, and the you remove the popup from the DOM, the GB trashes the listener, this means the listener never gets called, but you used that listener to teardown your thing and maybe sub components, but now they will live forever as ghosts "components".

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