Re: [w3c/webcomponents] Named slots and the slot attribute requirement (#726)

An episode: at moving Blink's all UA shadow implementations from V0 to V1, `<details>` element could not be represented only with web-exposed V1 APIs, to find `summary:first-of-type` in its children, so we had to introduce an internal UA-shadow only mechanism to pick that element.

Maybe using CSS Selector is too powerful to be performant, but we need to find options to explore for extending the current capability.  So we need use cases that can't be represented with V1 APIs.

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Received on Wednesday, 21 February 2018 09:03:31 UTC