> The `window.Alpine = Alpine` bit is optional, but is nice to have for freedom and flexibility. Like when tinkering with Alpine from the devtools for example.
+
+
+> If you imported Alpine into a bundle, you have to make sure you are registering any extension code IN BETWEEN when you import the `Alpine` global object, and when you initialize Alpine by calling `Alpine.start()`.
+
+
+[→ Read more about extending Alpine](/advanced/extending)