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59 lines
2.3 KiB
Markdown
59 lines
2.3 KiB
Markdown
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# Auto imports
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Nuxt auto-imports helper functions, composables and Vue APIs to use across your application without explicitly importing them. Based on the directory structure, every Nuxt application can also use auto-imports for its own components, composables and plugins.
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Contrary to a classic global declaration, Nuxt preserves typings and IDEs completions and hints, and only includes what is actually used in your production code.
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::alert{type=info}
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💡 In the documentation, every function that is not explicitly imported is auto-imported by Nuxt and can be used as-is in your code.
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::alert{type=info}
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🚧 We are working on a proper API reference that will include every Nuxt auto-imports. For now, you can find a reference on the framework repository: [github.com/nuxt/framework/blob/main/packages/nuxt3/src/auto-imports/imports.ts](https://github.com/nuxt/framework/blob/main/packages/nuxt3/src/auto-imports/imports.ts)
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## Nuxt auto-imports
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Nuxt auto-imports functions and composables to perform [data fetching](/docs/usage/data-fetching), get access to the [app context](/docs/usage/nuxt-app) and [runtime config](/docs/usage/runtime-config), manage [state](/docs/usage/state) or define components and plugins.
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These functions can be used in components, composables or plugins.
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```vue
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<script setup>
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/* useAsyncData() and $fetch() are auto-imported */
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const { data, refresh, pending } = await useAsyncData('/api/hello', () => $fetch('/api/hello'))
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</script>
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```
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## Vue auto-imports
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Vue 3 exposes Reactivity APIs like `ref` or `computed`, as well as lifecycle hooks and helpers that are auto-imported by Nuxt.
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```vue
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<script setup>
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/* ref() and computed() are auto-imported */
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const count = ref(1)
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const double = computed(() => count.value * 2)
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</script>
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```
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## Directory based auto-imports
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Nuxt directly auto-imports files created in defined directories:
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- `components/` for [Vue components](/docs/directory-structure/components).
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- `composables/` for [Vue composables](/docs/directory-structure/composables).
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## Explicit imports
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Every Nuxt auto-import is exposed by the `#imports` alias that can be used to make the import explicit if needed:
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```vue
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<script setup>
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import { ref, computed } from '#imports'
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const count = ref(1)
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const double = computed(() => count.value * 2)
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</script>
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```
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