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

@treshugart I know what are decorators and [how to use them](https://github.com/WebReflection/universal-mixin#universal-mixin-), but indeed these are something always deliverable in user-land, DOM APIs aren't.

I'm also concerned about possible polyfills, if we have unpolyfillable features, we need transpilers, and transpilers can have bugs that make the feature unusable (e.g. [extending native classes](https://github.com/babel/babel/issues/4480))

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Received on Tuesday, 21 February 2017 09:18:48 UTC