Re: [WICG/webcomponents] Proposal: Composable shadow roots, for extending builtins and more (Issue #1108) from Ryosuke Niwa on 2025-07-20 (public-webapps-github@w3.org from July 2025)

From: Ryosuke Niwa <notifications@github.com>
Date: Sun, 20 Jul 2025 15:23:42 -0700
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rniwa left a comment (WICG/webcomponents#1108)

In v0 API, we had `<shadow></shadow>` element which does the same thing as `<slot type="supershadow"></slot>` in this proposal. We got rid of it because even Polymer wasn't making GOOD use of it at the time we introduced v1 spec, and it dramatically complicates event dispatching path. See https://www.w3.org/Bugs/Public/show_bug.cgi?id=28446 and the related discussions. Also see https://lists.w3.org/Archives/Public/public-webapps/2014AprJun/0151.html where we proposed an alternative design for inheritance hooks which doesn't involve multiple generations of shadow DOM.

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Received on Sunday, 20 July 2025 22:23:46 UTC