Codegen node is missing for element/if/for node. Apply appropriate transforms first.

<template>
    <slot name="header" />
    <slot />
    <slot name="footer" />
</template>

<script setup lang="ts">
definePageMeta({
  layout: 'auth',
  middleware: 'guest'
})
</script>
<template>
    <template #header>
      //
    </template>
    <form>
      //
    </form>
    <template #footer>
      //
    </template>
</template>