Converted to TS, add import

resources/js/plugins/vuetify.ts

@@ -0,0 +1,8 @@
+import 'vuetify/styles'
+import { createVuetify } from 'vuetify'
+
+export default createVuetify({
+    theme: {
+        defaultTheme: 'dark',
+    },
+})