refactor: migrate to nuxt compatibilityVersion: 4 (#3298)

composables/vue.ts

@@ -1,63 +0,0 @@
-import type { SchemaAugmentations } from '@unhead/schema'
-import type { ActiveHeadEntry, UseHeadInput, UseHeadOptions } from '@unhead/vue'
-import type { ComponentInternalInstance } from 'vue'
-import { onActivated, onDeactivated, ref } from 'vue'
-
-export const isHydrated = ref(false)
-
-export function onHydrated(cb: () => unknown) {
-  watchOnce(isHydrated, () => cb(), { immediate: isHydrated.value })
-}
-
-/**
- * ### Whether the current component is running in the background
- *
- * for handling problems caused by the keepalive function
- */
-export function useDeactivated() {
-  const deactivated = ref(false)
-  onActivated(() => deactivated.value = false)
-  onDeactivated(() => deactivated.value = true)
-
-  return deactivated
-}
-
-/**
- * ### When the component is restored from the background
- *
- * for handling problems caused by the keepalive function
- *
- * @param hook
- * @param target
- */
-export function onReactivated(hook: () => void, target?: ComponentInternalInstance | null): void {
-  const initial = ref(true)
-  onActivated(() => {
-    if (initial.value)
-      return
-    hook()
-  }, target)
-  onDeactivated(() => initial.value = false)
-}
-
-export function useHydratedHead<T extends SchemaAugmentations>(input: UseHeadInput<T>, options?: UseHeadOptions): ActiveHeadEntry<UseHeadInput<T>> | void {
-  if (input && typeof input === 'object' && !('value' in input)) {
-    const title = 'title' in input ? input.title : undefined
-    if (import.meta.server && title) {
-      input.meta = input.meta || []
-      if (Array.isArray(input.meta)) {
-        input.meta.push(
-          { property: 'og:title', content: (typeof input.title === 'function' ? input.title() : input.title) as string },
-        )
-      }
-    }
-    else if (title) {
-      (input as any).title = () => isHydrated.value ? typeof title === 'function' ? title() : title : ''
-    }
-  }
-  return useHead((() => {
-    if (!isHydrated.value)
-      return {}
-    return resolveUnref(input)
-  }) as UseHeadInput<T>, options)
-}