feat: enforce to use function declaration on top-level

fixtures/vitesse/src/components/Footer.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 const { t, availableLocales, locale } = useI18n()
 
-const toggleLocales = () => {
+function toggleLocales() {
   // change to some real logic
   const locales = availableLocales
   locale.value = locales[(locales.indexOf(locale.value) + 1) % locales.length]

fixtures/vitesse/src/pages/index.vue

@@ -3,7 +3,7 @@ const user = useUserStore()
 const name = $ref(user.savedName)
 
 const router = useRouter()
-const go = () => {
+function go() {
   if (name)
     router.push(`/hi/${encodeURIComponent(name)}`)
 }