Merge pull request #32439 from storybookjs/norbert/fix-type-event-slowdown

Instrumenter: Fix userEvent.type performance regression

Author: ndelangen

code/core/src/test/preview.ts

@@ -96,7 +96,10 @@ const enhanceContext: LoaderFunction = async (context) => {
   if (clipboard) {
     context.userEvent = instrument(
       { userEvent: uninstrumentedUserEvent.setup() },
-      { intercept: true }
+      {
+        intercept: true,
+        getKeys: (obj) => Object.keys(obj).filter((key) => key !== 'eventWrapper'),
+      }
     ).userEvent;
 
     // Restore original clipboard, which was replaced with a stub by userEvent.setup()

code/core/src/test/testing-library.ts

@@ -15,6 +15,7 @@ type TestingLibraryDom = typeof domTestingLibrary;
 const testingLibrary = instrument(
   { ...domTestingLibrary },
   {
+    getKeys: (obj) => Object.keys(obj).filter((key) => key !== 'eventWrapper'),
     intercept: (method, path) =>
       path[0] === 'fireEvent' || method.startsWith('find') || method.startsWith('waitFor'),
   }
@@ -118,5 +119,5 @@ export const uninstrumentedUserEvent = _userEvent.userEvent;
 
 export const { userEvent }: { userEvent: UserEvent['userEvent'] } = instrument(
   { userEvent: _userEvent.userEvent },
-  { intercept: true }
+  { intercept: true, getKeys: (obj) => Object.keys(obj).filter((key) => key !== 'eventWrapper') }
 );