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Add toJSON to PerformancePaintTiming #114

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Merged
noamr merged 1 commit into from
May 17, 2025
Merged

Add toJSON to PerformancePaintTiming #114

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5 changes: 4 additions & 1 deletion index.bs
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Expand Up @@ -223,7 +223,9 @@ The {{PerformancePaintTiming}} interface {#sec-PerformancePaintTiming}

<pre class="idl">
[Exposed=Window]
interface PerformancePaintTiming : PerformanceEntry {};
interface PerformancePaintTiming : PerformanceEntry {
[Default] object toJSON();
};
PerformancePaintTiming includes PaintTimingMixin;
</pre>

Expand All @@ -235,6 +237,7 @@ The {{PerformancePaintTiming}} interface {#sec-PerformancePaintTiming}
* The {{PerformanceEntry/entryType}} attribute's getter must return <code>"paint"</code>.
* The {{PerformanceEntry/startTime}} attribute's getter must return a {{DOMHighResTimeStamp}} of when the paint occured.
* The {{PerformanceEntry/duration}} attribute's getter must return 0.
* When <dfn for="PerformancePaintTiming" export>toJSON</dfn> is called, run the [=default toJSON steps=] for {{PerformancePaintTiming}}.

NOTE: A user agent implementing {{PerformancePaintTiming}} would need to include <code>"paint"</code> in {{PerformanceObserver/supportedEntryTypes}} of a [=realm/global object=] whose [=Window/browsing context=] is [=paint-timing eligible=].
This allows developers to detect support for paint timing for a particular [=browsing context=].
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