Nuxt/packages/nuxt/src/pages/runtime/page-placeholder.ts

import { defineComponent } from 'vue'
// @ts-expect-error virtual file
import { devPagesDir } from '#build/nuxt.config.mjs'

export default defineComponent({
  name: 'NuxtPage',
  setup (_, props) {
    if (import.meta.dev) {
      console.warn(`Create a Vue component in the \`${devPagesDir}/\` directory to enable \`<NuxtPage>\``)
    }
    return () => props.slots.default?.()
  }
})