diff --git a/cmake/Sources.json b/cmake/Sources.json
index 0caef09fe4..cee9e5f271 100644
--- a/cmake/Sources.json
+++ b/cmake/Sources.json
@@ -85,6 +85,7 @@
       "src/buntime/web/compression/*.cpp",
       "src/buntime/web/events/*.cpp",
       "src/buntime/web/streams/*.cpp",
+      "src/buntime/web/performance/*.cpp",
       "src/bake/*.cpp",
       "src/deps/*.cpp",
       "src/vm/*.cpp",
diff --git a/cmake/targets/BuildBun.cmake b/cmake/targets/BuildBun.cmake
index b2f164e76c..cd03f7dd05 100644
--- a/cmake/targets/BuildBun.cmake
+++ b/cmake/targets/BuildBun.cmake
@@ -896,6 +896,7 @@ target_include_directories(${bun} PRIVATE
   ${CWD}/src/buntime/web/compression
   ${CWD}/src/buntime/web/events
   ${CWD}/src/buntime/web/streams
+  ${CWD}/src/buntime/web/performance
   ${CWD}/src/buntime/modules
   ${CWD}/src/js/builtins
   ${CWD}/src/napi
diff --git a/src/buntime/webcore/JSPerformance.cpp b/src/buntime/web/performance/JSPerformance.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformance.cpp
rename to src/buntime/web/performance/JSPerformance.cpp
diff --git a/src/buntime/webcore/JSPerformance.h b/src/buntime/web/performance/JSPerformance.h
similarity index 100%
rename from src/buntime/webcore/JSPerformance.h
rename to src/buntime/web/performance/JSPerformance.h
diff --git a/src/buntime/webcore/JSPerformanceEntry.cpp b/src/buntime/web/performance/JSPerformanceEntry.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceEntry.cpp
rename to src/buntime/web/performance/JSPerformanceEntry.cpp
diff --git a/src/buntime/webcore/JSPerformanceEntry.h b/src/buntime/web/performance/JSPerformanceEntry.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceEntry.h
rename to src/buntime/web/performance/JSPerformanceEntry.h
diff --git a/src/buntime/webcore/JSPerformanceEntryCustom.cpp b/src/buntime/web/performance/JSPerformanceEntryCustom.cpp
similarity index 99%
rename from src/buntime/webcore/JSPerformanceEntryCustom.cpp
rename to src/buntime/web/performance/JSPerformanceEntryCustom.cpp
index 944427d627..c00b02b505 100644
--- a/src/buntime/webcore/JSPerformanceEntryCustom.cpp
+++ b/src/buntime/web/performance/JSPerformanceEntryCustom.cpp
@@ -33,6 +33,7 @@
 #include "JSPerformanceEntry.h"
 
 #include "JSDOMBinding.h"
+#include "JSDOMWrapperCache.h"
 #include "JSPerformanceMark.h"
 #include "JSPerformanceMeasure.h"
 // #include "JSPerformanceNavigationTiming.h"
diff --git a/src/buntime/webcore/JSPerformanceMark.cpp b/src/buntime/web/performance/JSPerformanceMark.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMark.cpp
rename to src/buntime/web/performance/JSPerformanceMark.cpp
diff --git a/src/buntime/webcore/JSPerformanceMark.h b/src/buntime/web/performance/JSPerformanceMark.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMark.h
rename to src/buntime/web/performance/JSPerformanceMark.h
diff --git a/src/buntime/webcore/JSPerformanceMarkOptions.cpp b/src/buntime/web/performance/JSPerformanceMarkOptions.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMarkOptions.cpp
rename to src/buntime/web/performance/JSPerformanceMarkOptions.cpp
diff --git a/src/buntime/webcore/JSPerformanceMarkOptions.h b/src/buntime/web/performance/JSPerformanceMarkOptions.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMarkOptions.h
rename to src/buntime/web/performance/JSPerformanceMarkOptions.h
diff --git a/src/buntime/webcore/JSPerformanceMeasure.cpp b/src/buntime/web/performance/JSPerformanceMeasure.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMeasure.cpp
rename to src/buntime/web/performance/JSPerformanceMeasure.cpp
diff --git a/src/buntime/webcore/JSPerformanceMeasure.h b/src/buntime/web/performance/JSPerformanceMeasure.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMeasure.h
rename to src/buntime/web/performance/JSPerformanceMeasure.h
diff --git a/src/buntime/webcore/JSPerformanceMeasureOptions.cpp b/src/buntime/web/performance/JSPerformanceMeasureOptions.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMeasureOptions.cpp
rename to src/buntime/web/performance/JSPerformanceMeasureOptions.cpp
diff --git a/src/buntime/webcore/JSPerformanceMeasureOptions.h b/src/buntime/web/performance/JSPerformanceMeasureOptions.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceMeasureOptions.h
rename to src/buntime/web/performance/JSPerformanceMeasureOptions.h
diff --git a/src/buntime/webcore/JSPerformanceObserver.cpp b/src/buntime/web/performance/JSPerformanceObserver.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceObserver.cpp
rename to src/buntime/web/performance/JSPerformanceObserver.cpp
diff --git a/src/buntime/webcore/JSPerformanceObserver.h b/src/buntime/web/performance/JSPerformanceObserver.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceObserver.h
rename to src/buntime/web/performance/JSPerformanceObserver.h
diff --git a/src/buntime/webcore/JSPerformanceObserverCallback.cpp b/src/buntime/web/performance/JSPerformanceObserverCallback.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceObserverCallback.cpp
rename to src/buntime/web/performance/JSPerformanceObserverCallback.cpp
diff --git a/src/buntime/webcore/JSPerformanceObserverCallback.h b/src/buntime/web/performance/JSPerformanceObserverCallback.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceObserverCallback.h
rename to src/buntime/web/performance/JSPerformanceObserverCallback.h
diff --git a/src/buntime/webcore/JSPerformanceObserverCustom.cpp b/src/buntime/web/performance/JSPerformanceObserverCustom.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceObserverCustom.cpp
rename to src/buntime/web/performance/JSPerformanceObserverCustom.cpp
diff --git a/src/buntime/webcore/JSPerformanceObserverEntryList.cpp b/src/buntime/web/performance/JSPerformanceObserverEntryList.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceObserverEntryList.cpp
rename to src/buntime/web/performance/JSPerformanceObserverEntryList.cpp
diff --git a/src/buntime/webcore/JSPerformanceObserverEntryList.h b/src/buntime/web/performance/JSPerformanceObserverEntryList.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceObserverEntryList.h
rename to src/buntime/web/performance/JSPerformanceObserverEntryList.h
diff --git a/src/buntime/webcore/JSPerformanceResourceTiming.cpp b/src/buntime/web/performance/JSPerformanceResourceTiming.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceResourceTiming.cpp
rename to src/buntime/web/performance/JSPerformanceResourceTiming.cpp
diff --git a/src/buntime/webcore/JSPerformanceResourceTiming.h b/src/buntime/web/performance/JSPerformanceResourceTiming.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceResourceTiming.h
rename to src/buntime/web/performance/JSPerformanceResourceTiming.h
diff --git a/src/buntime/webcore/JSPerformanceServerTiming.cpp b/src/buntime/web/performance/JSPerformanceServerTiming.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceServerTiming.cpp
rename to src/buntime/web/performance/JSPerformanceServerTiming.cpp
diff --git a/src/buntime/webcore/JSPerformanceServerTiming.h b/src/buntime/web/performance/JSPerformanceServerTiming.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceServerTiming.h
rename to src/buntime/web/performance/JSPerformanceServerTiming.h
diff --git a/src/buntime/webcore/JSPerformanceTiming.cpp b/src/buntime/web/performance/JSPerformanceTiming.cpp
similarity index 100%
rename from src/buntime/webcore/JSPerformanceTiming.cpp
rename to src/buntime/web/performance/JSPerformanceTiming.cpp
diff --git a/src/buntime/webcore/JSPerformanceTiming.h b/src/buntime/web/performance/JSPerformanceTiming.h
similarity index 100%
rename from src/buntime/webcore/JSPerformanceTiming.h
rename to src/buntime/web/performance/JSPerformanceTiming.h
diff --git a/src/buntime/webcore/NetworkLoadMetrics.cpp b/src/buntime/web/performance/NetworkLoadMetrics.cpp
similarity index 100%
rename from src/buntime/webcore/NetworkLoadMetrics.cpp
rename to src/buntime/web/performance/NetworkLoadMetrics.cpp
diff --git a/src/buntime/webcore/NetworkLoadMetrics.h b/src/buntime/web/performance/NetworkLoadMetrics.h
similarity index 100%
rename from src/buntime/webcore/NetworkLoadMetrics.h
rename to src/buntime/web/performance/NetworkLoadMetrics.h
diff --git a/src/buntime/webcore/Performance.cpp b/src/buntime/web/performance/Performance.cpp
similarity index 100%
rename from src/buntime/webcore/Performance.cpp
rename to src/buntime/web/performance/Performance.cpp
diff --git a/src/buntime/webcore/Performance.h b/src/buntime/web/performance/Performance.h
similarity index 100%
rename from src/buntime/webcore/Performance.h
rename to src/buntime/web/performance/Performance.h
diff --git a/src/buntime/webcore/PerformanceEntry.cpp b/src/buntime/web/performance/PerformanceEntry.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceEntry.cpp
rename to src/buntime/web/performance/PerformanceEntry.cpp
diff --git a/src/buntime/webcore/PerformanceEntry.h b/src/buntime/web/performance/PerformanceEntry.h
similarity index 100%
rename from src/buntime/webcore/PerformanceEntry.h
rename to src/buntime/web/performance/PerformanceEntry.h
diff --git a/src/buntime/webcore/PerformanceMark.cpp b/src/buntime/web/performance/PerformanceMark.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceMark.cpp
rename to src/buntime/web/performance/PerformanceMark.cpp
diff --git a/src/buntime/webcore/PerformanceMark.h b/src/buntime/web/performance/PerformanceMark.h
similarity index 100%
rename from src/buntime/webcore/PerformanceMark.h
rename to src/buntime/web/performance/PerformanceMark.h
diff --git a/src/buntime/webcore/PerformanceMarkOptions.h b/src/buntime/web/performance/PerformanceMarkOptions.h
similarity index 100%
rename from src/buntime/webcore/PerformanceMarkOptions.h
rename to src/buntime/web/performance/PerformanceMarkOptions.h
diff --git a/src/buntime/webcore/PerformanceMeasure.cpp b/src/buntime/web/performance/PerformanceMeasure.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceMeasure.cpp
rename to src/buntime/web/performance/PerformanceMeasure.cpp
diff --git a/src/buntime/webcore/PerformanceMeasure.h b/src/buntime/web/performance/PerformanceMeasure.h
similarity index 100%
rename from src/buntime/webcore/PerformanceMeasure.h
rename to src/buntime/web/performance/PerformanceMeasure.h
diff --git a/src/buntime/webcore/PerformanceMeasureOptions.h b/src/buntime/web/performance/PerformanceMeasureOptions.h
similarity index 100%
rename from src/buntime/webcore/PerformanceMeasureOptions.h
rename to src/buntime/web/performance/PerformanceMeasureOptions.h
diff --git a/src/buntime/webcore/PerformanceObserver.cpp b/src/buntime/web/performance/PerformanceObserver.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceObserver.cpp
rename to src/buntime/web/performance/PerformanceObserver.cpp
diff --git a/src/buntime/webcore/PerformanceObserver.h b/src/buntime/web/performance/PerformanceObserver.h
similarity index 100%
rename from src/buntime/webcore/PerformanceObserver.h
rename to src/buntime/web/performance/PerformanceObserver.h
diff --git a/src/buntime/webcore/PerformanceObserverCallback.h b/src/buntime/web/performance/PerformanceObserverCallback.h
similarity index 100%
rename from src/buntime/webcore/PerformanceObserverCallback.h
rename to src/buntime/web/performance/PerformanceObserverCallback.h
diff --git a/src/buntime/webcore/PerformanceObserverEntryList.cpp b/src/buntime/web/performance/PerformanceObserverEntryList.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceObserverEntryList.cpp
rename to src/buntime/web/performance/PerformanceObserverEntryList.cpp
diff --git a/src/buntime/webcore/PerformanceObserverEntryList.h b/src/buntime/web/performance/PerformanceObserverEntryList.h
similarity index 100%
rename from src/buntime/webcore/PerformanceObserverEntryList.h
rename to src/buntime/web/performance/PerformanceObserverEntryList.h
diff --git a/src/buntime/webcore/PerformanceResourceTiming.cpp b/src/buntime/web/performance/PerformanceResourceTiming.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceResourceTiming.cpp
rename to src/buntime/web/performance/PerformanceResourceTiming.cpp
diff --git a/src/buntime/webcore/PerformanceResourceTiming.h b/src/buntime/web/performance/PerformanceResourceTiming.h
similarity index 100%
rename from src/buntime/webcore/PerformanceResourceTiming.h
rename to src/buntime/web/performance/PerformanceResourceTiming.h
diff --git a/src/buntime/webcore/PerformanceResourceTiming.idl b/src/buntime/web/performance/PerformanceResourceTiming.idl
similarity index 100%
rename from src/buntime/webcore/PerformanceResourceTiming.idl
rename to src/buntime/web/performance/PerformanceResourceTiming.idl
diff --git a/src/buntime/webcore/PerformanceServerTiming.cpp b/src/buntime/web/performance/PerformanceServerTiming.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceServerTiming.cpp
rename to src/buntime/web/performance/PerformanceServerTiming.cpp
diff --git a/src/buntime/webcore/PerformanceServerTiming.h b/src/buntime/web/performance/PerformanceServerTiming.h
similarity index 100%
rename from src/buntime/webcore/PerformanceServerTiming.h
rename to src/buntime/web/performance/PerformanceServerTiming.h
diff --git a/src/buntime/webcore/PerformanceServerTiming.idl b/src/buntime/web/performance/PerformanceServerTiming.idl
similarity index 100%
rename from src/buntime/webcore/PerformanceServerTiming.idl
rename to src/buntime/web/performance/PerformanceServerTiming.idl
diff --git a/src/buntime/webcore/PerformanceTiming.cpp b/src/buntime/web/performance/PerformanceTiming.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceTiming.cpp
rename to src/buntime/web/performance/PerformanceTiming.cpp
diff --git a/src/buntime/webcore/PerformanceTiming.h b/src/buntime/web/performance/PerformanceTiming.h
similarity index 100%
rename from src/buntime/webcore/PerformanceTiming.h
rename to src/buntime/web/performance/PerformanceTiming.h
diff --git a/src/buntime/webcore/PerformanceUserTiming.cpp b/src/buntime/web/performance/PerformanceUserTiming.cpp
similarity index 100%
rename from src/buntime/webcore/PerformanceUserTiming.cpp
rename to src/buntime/web/performance/PerformanceUserTiming.cpp
diff --git a/src/buntime/webcore/PerformanceUserTiming.h b/src/buntime/web/performance/PerformanceUserTiming.h
similarity index 100%
rename from src/buntime/webcore/PerformanceUserTiming.h
rename to src/buntime/web/performance/PerformanceUserTiming.h
diff --git a/src/buntime/webcore/ResourceLoadTiming.h b/src/buntime/web/performance/ResourceLoadTiming.h
similarity index 100%
rename from src/buntime/webcore/ResourceLoadTiming.h
rename to src/buntime/web/performance/ResourceLoadTiming.h
diff --git a/src/buntime/webcore/ResourceTiming.cpp b/src/buntime/web/performance/ResourceTiming.cpp
similarity index 100%
rename from src/buntime/webcore/ResourceTiming.cpp
rename to src/buntime/web/performance/ResourceTiming.cpp
diff --git a/src/buntime/webcore/ResourceTiming.h b/src/buntime/web/performance/ResourceTiming.h
similarity index 100%
rename from src/buntime/webcore/ResourceTiming.h
rename to src/buntime/web/performance/ResourceTiming.h
diff --git a/src/buntime/webcore/ServerTiming.cpp b/src/buntime/web/performance/ServerTiming.cpp
similarity index 100%
rename from src/buntime/webcore/ServerTiming.cpp
rename to src/buntime/web/performance/ServerTiming.cpp
diff --git a/src/buntime/webcore/ServerTiming.h b/src/buntime/web/performance/ServerTiming.h
similarity index 100%
rename from src/buntime/webcore/ServerTiming.h
rename to src/buntime/web/performance/ServerTiming.h
diff --git a/src/buntime/webcore/ServerTimingParser.cpp b/src/buntime/web/performance/ServerTimingParser.cpp
similarity index 100%
rename from src/buntime/webcore/ServerTimingParser.cpp
rename to src/buntime/web/performance/ServerTimingParser.cpp
diff --git a/src/buntime/webcore/ServerTimingParser.h b/src/buntime/web/performance/ServerTimingParser.h
similarity index 100%
rename from src/buntime/webcore/ServerTimingParser.h
rename to src/buntime/web/performance/ServerTimingParser.h