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88 lines
2.1 KiB
Markdown
88 lines
2.1 KiB
Markdown
---
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icon: IconDirectory
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title: 'composables'
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head.title: Composables directory
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---
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# Composables directory
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Nuxt 3 supports `composables/` directory to automatically import your Vue composables into your application using [auto-imports](/guide/concepts/auto-imports)!
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Under the hood, Nuxt auto generates the file `.nuxt/auto-imports.d.ts` to declare the types.
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Be aware that you have to run `nuxi prepare`, `nuxi dev` or `nuxi build` in order to let Nuxt generates the types. If you create a composable without having the dev server running, typescript will throw an error `Cannot find name 'useBar'.`
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## Example
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**Method 1:** Using named export
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```js [composables/useFoo.ts]
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export const useFoo = () => {
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return useState('foo', () => 'bar')
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}
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```
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**Method 2:** Using default export
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```js [composables/use-foo.ts or composables/useFoo.ts]
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// It will be available as useFoo() (camelCase of file name without extension)
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export default function () {
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return useState('foo', () => 'bar')
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}
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```
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**Usage:** You can now use auto imported composable in `.js`, `.ts` and `.vue` files
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```vue [app.vue]
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<template>
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<div>
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{{ foo }}
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</div>
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</template>
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<script setup>
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const foo = useFoo()
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</script>
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```
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:LinkExample{link="/examples/auto-imports/composables"}
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## How files are scanned
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Nuxt only scans files at the top level of the `composables/` directory for composables.
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For example:
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```bash
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composables
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| - useFoo.ts // scanned
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| - index.ts // scanned
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| - nested
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| --- utils.ts // not scanned
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```
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Only `composables/useFoo.ts` would be searched for imports.
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To get auto imports for nested modules, you could either reexport them (recommended) or configure the scanner to scan nested directories:
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**Example:** re-export the composables you need from the `composables/index.ts` file:
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```js [composables/index.ts]
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// Enables auto import for this export
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export { useBaz } from './nested/useBaz.ts'
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```
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**Example:** Scan nested directories inside composables:
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```ts [nuxt.config.ts]
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export default defineConfig({
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// ...
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autoImports: {
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dirs: [
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// Scan composables from nested directories
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'composables/**'
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]
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}
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})
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```
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