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- #import <DOM/EventTarget.idl>
- #import <HighResolutionTime/DOMHighResTimeStamp.idl>
- #import <NavigationTiming/PerformanceTiming.idl>
- // https://w3c.github.io/hr-time/#sec-performance
- [Exposed=(Window, Worker)]
- interface Performance : EventTarget {
- DOMHighResTimeStamp now();
- readonly attribute DOMHighResTimeStamp timeOrigin;
- readonly attribute PerformanceTiming timing;
- };
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