feat: add error page custom

Author: Kumzy

app/error.vue

@@ -0,0 +1,107 @@
+<script setup lang="ts">
+import { joinURL } from 'ufo'
+import type { NuxtError } from '#app'
+
+const props = defineProps<{ error: NuxtError }>()
+
+const baseURL = import.meta.dev ? '/' : useRuntimeConfig().app.baseURL
+
+const isNotFound = computed(() => props.error?.statusCode === 404)
+const headline = computed(() =>
+  isNotFound.value ? 'Page not found' : 'Something went wrong',
+)
+const description = computed(() =>
+  isNotFound.value
+    ? 'Looks like this page took a wrong turn into hyperspace. The link may be broken or the page may have moved.'
+    : props.error?.message || 'An unexpected error occurred. Please try again.',
+)
+
+useHead({
+  htmlAttrs: { lang: 'en' },
+  meta: [
+    { name: 'viewport', content: 'width=device-width, initial-scale=1' },
+    { name: 'robots', content: 'noindex' },
+  ],
+  link: [
+    {
+      rel: 'icon',
+      type: 'image/svg+xml',
+      href: joinURL(baseURL, 'logo.svg'),
+    },
+  ],
+})
+
+useSeoMeta({
+  title: () => headline.value,
+  titleTemplate: '%s · Litestar',
+  description: () => description.value,
+})
+
+const handleError = () => clearError({ redirect: '/' })
+</script>
+
+<template>
+  <UApp>
+    <div class="relative flex flex-col min-h-screen">
+      <AppHeader />
+
+      <UMain class="relative flex-1 flex items-center justify-center">
+        <HeroBackground
+          class="absolute w-full -top-px text-primary shrink-0 -z-10"
+        />
+
+        <UContainer class="py-16 sm:py-24 lg:py-32">
+          <UError
+            as="section"
+            :error="error"
+            :clear="false"
+            :ui="{
+              root: 'text-center max-w-2xl mx-auto flex flex-col items-center',
+              leading: 'mb-6',
+              statusCode:
+                'text-7xl sm:text-8xl font-bold text-primary leading-none',
+              statusMessage:
+                'text-3xl sm:text-4xl font-semibold text-highlighted mt-4',
+              message: 'text-base sm:text-lg text-muted mt-4 max-w-prose',
+              links: 'mt-10 flex flex-wrap justify-center gap-3',
+            }"
+          >
+            <template #leading>
+              <LitestarLogo class="block w-auto h-12 sm:h-14" />
+            </template>
+
+            <template #statusMessage>
+              {{ headline }}
+            </template>
+
+            <template #message>
+              {{ description }}
+            </template>
+
+            <template #links>
+              <UButton
+                size="xl"
+                trailing-icon="i-lucide-arrow-right"
+                @click="handleError"
+              >
+                Back to home
+              </UButton>
+              <UButton
+                to="https://docs.litestar.dev/"
+                target="_blank"
+                size="xl"
+                color="neutral"
+                variant="subtle"
+                leading-icon="i-lucide-book-open"
+              >
+                Read the docs
+              </UButton>
+            </template>
+          </UError>
+        </UContainer>
+      </UMain>
+
+      <AppFooter />
+    </div>
+  </UApp>
+</template>