How to add multiple language using typescript and composition API

[sdiricco-move]

In following snippet of code, how can I add a language?

<template>
  <p>{{ t("messages.hello") }}</p>
</template>

<script lang="ts" setup>
import enUS from "@/locales/en.json";
import { useI18n } from "vue-i18n";

type MessageSchema = typeof enUS;

const { t } = useI18n<{
  message: MessageSchema;
}>({
  inheritLocale: true,
  messages: {
    "en-US": enUS
  },
});
</script>