fix: failing tests

src/tests/setupTests.ts

@@ -1,16 +1,17 @@
+// Try this import style instead
 import { expect, afterEach } from 'vitest';
 import { cleanup } from '@testing-library/react';
-import * as matchers from "@testing-library/jest-dom/matchers";
+import * as matchers from '@testing-library/jest-dom/matchers';
 
-class ResizeObserver {
+// Add the matchers (should work with * as import)
+expect.extend(matchers);
+
+// Mock ResizeObserver
+global.ResizeObserver = class {
   observe() { }
   unobserve() { }
   disconnect() { }
-}
-
-globalThis.ResizeObserver = ResizeObserver;
-
-expect.extend(matchers);
+};
 
 afterEach(() => {
   cleanup();