Remove unnecesary call for better inlining

facebook · Aug 21, 2020 · f976c48 · f976c48
1 parent 3e039e8
commit f976c48
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/react-dom/src/events/SyntheticEvent.js b/packages/react-dom/src/events/SyntheticEvent.js
@@ -207,7 +207,9 @@ export const MouseEventInterface: EventInterfaceType = {
     if ('movementY' in event) {
       return event.movementY;
     }
-    updateMouseMovementPolyfillState(event);
+    // Don't need to call updateMouseMovementPolyfillState() here
+    // because it's guaranteed to have already run when movementX
+    // was copied.
     return lastMovementY;
   },
 };