The syntax of TypeScript is used in docs/guide/seo.

[ausir0726]

https://i18n.nuxtjs.org/docs/guide/seo#feature-details
[source] https://github.com/nuxt-modules/i18n/blob/main/docs/content/docs/02.guide/06.seo.md?plain=1#L246

In the final example, it mentioned

i18nHead.value.htmlAttrs!.lang

but did not specify <script setup lang="ts">
which may cause errors when users use the example code.

Since other templates did not mention using TypeScript,
the ! should be removed.