defineNuxtComponent · Nuxt Utils

defineNuxtComponent() is a helper function for defining type safe Vue components using options API similar to defineComponent(). defineNuxtComponent() wrapper also adds support for asyncData and head component options.

Using <script setup lang="ts"> is the recommended way of declaring Vue components in Nuxt 3.

Read more in Docs > Getting Started > Data Fetching.

`asyncData()`

If you choose not to use setup() in your app, you can use the asyncData() method within your component definition:

pages/index.vue

<script lang="ts">
export default defineNuxtComponent({
  async asyncData() {
    return {
      data: {
        greetings: 'hello world!'
      }
    }
  },
})
</script>

`head()`

If you choose not to use setup() in your app, you can use the head() method within your component definition:

pages/index.vue

<script lang="ts">
export default defineNuxtComponent({
  head(nuxtApp) {
    return {
      title: 'My site'
    }
  },
})
</script>

createError

Create an error object with additional metadata.

defineNuxtRouteMiddleware

Create named route middleware using defineNuxtRouteMiddleware helper function.