Container Timing - a new W3C performance metric - has migrated from Bloomberg to the WICG Github org 🎉

@jason-williams.co.uk made the Bloomberg Terminal use this web metric to measure human-perceived time to start apps. We've found it more useful than existing metrics.

github.com/WICG/container-timing

February 25, 2026 - 09:29 UTC

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@joshellis.co.uk 👀
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This feels really anti-web to me? Shadow DOM is part of the web, it should be included and considered in things like this, not handwave it away and make it an afterthought.
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Even weirder because it seems there's some productive discussion taking place in the linked thread.
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