Re: [w3c/webcomponents] The is="" attribute is confusing? Maybe we should encourage only ES6 class-based extension. (#509)

FWIW, we're against subclassing subclasses of `HTMLElement` (e.g. `HTMLInputElement`, etc...) for various reasons, so WebKit isn't going to support this feature anyway.  Extension of builtin elements are much better served with mixins.

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Received on Tuesday, 5 July 2016 20:53:00 UTC