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// GENERATED CONTENT - DO NOT EDIT
// Content was automatically extracted by Reffy into webref
typedef double DOMHighResTimeStamp;
typedef unsigned long long EpochTimeStamp;
[Exposed=(Window,Worker)]
interface Performance : EventTarget {
DOMHighResTimeStamp now();
readonly attribute DOMHighResTimeStamp timeOrigin;
[Default] object toJSON();
};
partial interface mixin WindowOrWorkerGlobalScope {
[Replaceable] readonly attribute Performance performance;
};