ui/docs/error.vue

<template>
  <div>
    <Header />

    <UContainer>
      <UMain>
        <UPage>
          <UPageError :error="error" />
        </UPage>
      </UMain>
    </UContainer>

    <ClientOnly>
      <LazyUDocsSearch :files="files" :navigation="navigation" />
    </ClientOnly>

    <UNotifications />
  </div>
</template>

<script setup lang="ts">
import type { NuxtError } from '#app'
import type { ParsedContent } from '@nuxt/content/dist/runtime/types'

useSeoMeta({
  title: 'Page not found',
  description: 'We are sorry but this page could not be found.'
})

defineProps<{
  error: NuxtError
}>()

const { branch } = useContentSource()

const { data: nav } = await useAsyncData('navigation', () => fetchContentNavigation())
const { data: files } = useLazyFetch<ParsedContent[]>('/api/search.json', { default: () => [], server: false })

// Computed

const navigation = computed(() => {
  const main = nav.value.filter(item => item._path !== '/dev')
  const dev = nav.value.find(item => item._path === '/dev')?.children

  return branch.value?.name === 'dev' ? dev : main
})

// Provide

provide('navigation', navigation)
provide('files', files)
</script>