almost there for function

src/lib/client-utils.ts

@@ -0,0 +1,14 @@
+/**
+ * Client-side utility functions
+ * Note: These utilities should only run in the browser
+ */
+
+/**
+ * Triggers haptic feedback on mobile devices
+ * @param duration - Duration in milliseconds (default 50ms for a light tap)
+ */
+export function hapticFeedback(duration: number = 50) {
+  if (typeof window !== "undefined" && "vibrate" in navigator) {
+    navigator.vibrate(duration);
+  }
+}