chore: use vueuse useEventListener for correct cleanups

app/components/AppFooter.vue

@@ -48,6 +48,9 @@ function onResize() {
   updateFooterPadding()
 }
 
+useEventListener('scroll', onScroll, { passive: true })
+useEventListener('resize', onResize, { passive: true })
+
 onMounted(() => {
   // Feature detect CSS scroll-state container queries (Chrome 133+)
   // @see https://developer.mozilla.org/en-US/docs/Web/CSS/@container#scroll-state_container_descriptors
@@ -60,14 +63,6 @@ onMounted(() => {
     // Only apply dynamic classes after mount to avoid hydration mismatch
     isMounted.value = true
   })
-
-  window.addEventListener('scroll', onScroll, { passive: true })
-  window.addEventListener('resize', onResize, { passive: true })
-})
-
-onUnmounted(() => {
-  window.removeEventListener('scroll', onScroll)
-  window.removeEventListener('resize', onResize)
 })
 </script>
 

app/components/ScrollToTop.vue

@@ -6,33 +6,29 @@ const excludedRoutes = new Set(['index', 'code'])
 
 const isActive = computed(() => !excludedRoutes.has(route.name as string))
 
-const isMounted = ref(false)
+const isMounted = useMounted()
 const isVisible = ref(false)
 const scrollThreshold = 300
 const supportsScrollStateQueries = ref(false)
 
 function onScroll() {
+  if (!supportsScrollStateQueries.value) {
+    return
+  }
   isVisible.value = window.scrollY > scrollThreshold
 }
 
 function scrollToTop() {
   window.scrollTo({ top: 0, behavior: 'smooth' })
 }
 
+useEventListener('scroll', onScroll, { passive: true })
+
 onMounted(() => {
   // Feature detect CSS scroll-state container queries (Chrome 133+)
   supportsScrollStateQueries.value = CSS.supports('container-type', 'scroll-state')
 
-  if (!supportsScrollStateQueries.value) {
-    window.addEventListener('scroll', onScroll, { passive: true })
-    onScroll()
-  }
-
-  isMounted.value = true
-})
-
-onUnmounted(() => {
-  window.removeEventListener('scroll', onScroll)
+  onScroll()
 })
 </script>
 

app/pages/code/[...path].vue

@@ -139,14 +139,12 @@ const { data: fileContent, status: fileStatus } = useFetch<PackageFileContentRes
 // Track hash manually since we update it via history API to avoid scroll
 const currentHash = ref('')
 
-// Initialize from route and listen for popstate (back/forward)
 onMounted(() => {
   currentHash.value = window.location.hash
-  window.addEventListener('popstate', () => {
-    currentHash.value = window.location.hash
-  })
 })
 
+useEventListener('popstate', () => (currentHash.value = window.location.hash))
+
 // Also sync when route changes (e.g., navigating to a different file)
 watch(
   () => route.hash,

nuxt.config.ts

@@ -15,6 +15,7 @@ export default defineNuxtConfig({
     'nuxt-og-image',
     '@nuxt/test-utils',
     '@vite-pwa/nuxt',
+    '@vueuse/nuxt',
   ],
 
   devtools: { enabled: true },