Core: allow viewability to be measured without yielding the main thread - #15421

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dgirardi:agent/percent-in-view-defer-allocation

Commits on Jul 30, 2026

Percent in view library: avoid allocating a deferred per intersection entry

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Percent in view library: report zero-area elements as not in view

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Percent in view library: reuse the observed rect for size overrides

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Percent in view library: measure viewability against ancestor clipping

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Percent in view library: make the pre-auction intersection wait bind

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Percent in view library: only clip against ancestors that contain the element

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Percent in view library: document why the intersection wait is capped at 20ms

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Percent in view library: do not use the observer when yielding is disabled

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Core: add auctionOptions.viewabilityMeasurement

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Percent in view library: wait for elements that are observed but not yet reported

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Commits on Jul 31, 2026

Merge branch 'master' into agent/percent-in-view-defer-allocation
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