Re: [csswg-drafts] [css-scoping] `:has-shadow` pseudo-class (#11007)

> And for comparison to the slower, more verbose code one might have now:
> 
> * today: `Array.from(document.querySelectorAll('*')).filter(n => n.shadowRoot)`

Please also note that there are nested shadow DOM instances which require recursive search. e.g. [cookies.set()](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/cookies/set#browser_compatibility)

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Received on Monday, 2 February 2026 13:16:28 UTC