diff --git a/Libraries/Core/setUpPerformance.js b/Libraries/Core/setUpPerformance.js
index 6d59a8657d6..26dfe88a70a 100644
--- a/Libraries/Core/setUpPerformance.js
+++ b/Libraries/Core/setUpPerformance.js
@@ -8,19 +8,8 @@
  * @format
  */
 
-'use strict';
+import Performance from '../WebPerformance/Performance';
 
 if (!global.performance) {
-  global.performance = ({}: {now?: () => number});
-}
-
-/**
- * Returns a double, measured in milliseconds.
- * https://developer.mozilla.org/en-US/docs/Web/API/Performance/now
- */
-if (typeof global.performance.now !== 'function') {
-  global.performance.now = function () {
-    const performanceNow = global.nativePerformanceNow || Date.now;
-    return performanceNow();
-  };
+  global.performance = new Performance();
 }
diff --git a/Libraries/WebPerformance/Performance.js b/Libraries/WebPerformance/Performance.js
index 0f05de293c2..0feb3444697 100644
--- a/Libraries/WebPerformance/Performance.js
+++ b/Libraries/WebPerformance/Performance.js
@@ -188,6 +188,10 @@ export default class Performance {
     NativePerformance.clearMeasures(measureName);
   }
 
+  /**
+   * Returns a double, measured in milliseconds.
+   * https://developer.mozilla.org/en-US/docs/Web/API/Performance/now
+   */
   now(): HighResTimeStamp {
     return getCurrentTimeStamp();
   }