Revamping to matrix style

node_modules/@vercel/speed-insights/test.setup.ts

@@ -0,0 +1,11 @@
+import { beforeEach } from 'vitest';
+import '@testing-library/jest-dom/vitest';
+
+beforeEach(() => {
+  if (typeof window === 'undefined') return;
+  // reset dom before each test
+  const html = document.querySelector('html');
+  if (html) {
+    html.innerHTML = '';
+  }
+});