Re: [w3c/webcomponents] Support `>>>` combinator in static profile (#78)

> Even for testing, the need for querySelectorAll never came up because we could just use JS functions to find the right element to do the necessary white box testing.

Can you give me an example? The most compelling use case I've heard so far for needing a shadow piercing querySelector is for testing. Did you instead implement your own tree walking function?

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