Nuxt/docs/content/2.guide/2.directory-structure/3.nuxt.config.md

---
icon: IconFile
title: nuxt.config.ts
head.title: Nuxt Configuration file
---

# Nuxt Configuration file

Nuxt can be easily configured with a single `nuxt.config` file, which can have either a `.js`, `.ts` or `.mjs` extension.

```ts
export default defineNuxtConfig({
  // My Nuxt config
})
```


::alert
`defineNuxtConfig` helper is globally available without import.
::

You can explicitily import `defineNuxtConfig` from `nuxt/config` if you prefer:

```js
import { defineNuxtConfig } from 'nuxt/config'

export default defineNuxtConfig({
  // My Nuxt config
})
```

To ensure your configuration is up to date, Nuxt will make a full restart when detecting changes in the main configuration file, the `.env`, `.nuxtignore` and `.nuxtrc` dotfiles.

::ReadMore{link="/api/configuration/nuxt.config"}
::