Nuxt/docs/1.getting-started/9.layers.md
hossein-moghadam a548b70342
docs: rename 3.nuxt.config.md to 3.nuxt-config.md (#23819)
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Sébastien Chopin <seb@nuxt.com>
2023-10-25 11:19:09 +02:00

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---
title: 'Layers'
description: Nuxt provides a powerful system that allows you to extend the default files, configs, and much more.
navigation.icon: i-ph-stack-duotone
---
One of the core features of Nuxt 3 is the layers and extending support. You can extend a default Nuxt application to reuse components, utils, and configuration. The layers structure is almost identical to a standard Nuxt application which makes them easy to author and maintain.
## Use Cases
- Share reusable configuration presets across projects using `nuxt.config` and `app.config`
- Create a component library using [`components/`](/docs/guide/directory-structure/components) directory
- Create utility and composable library using [`composables/`](/docs/guide/directory-structure/composables) and [`utils/`](/docs/guide/directory-structure/utils) directories
- Create Nuxt module presets
- Share standard setup across projects
- Create [Nuxt themes](https://github.com/nuxt-themes)
## Usage
You can extend a layer by adding the [extends](/docs/api/nuxt-config#extends) property to the [`nuxt.config.ts`](/docs/guide/directory-structure/nuxt-config) file.
```ts [nuxt.config.ts]
export default defineNuxtConfig({
extends: [
'../base', // Extend from a local layer
'@my-themes/awesome', // Extend from an installed npm package
'github:my-themes/awesome#v1', // Extend from a git repository
]
})
```
::read-more{to="/docs/guide/going-further/layers"}
Read more about layers in the **Layer Author Guide**.
::
::callout{color="blue" icon="i-ph-video-duotone" to="https://www.youtube.com/watch?v=lnFCM7c9f7I" target="_blank"}
Watch Learn Vue video about Nuxt Layers.
::
## Examples
- [Nuxt Docus Theme](https://github.com/nuxt-themes/docus#readme)
- [Nuxt Content Wind Theme](https://github.com/Atinux/content-wind#readme)