The `.nuxtignore` file lets Nuxt ignore `layouts`, `pages`, `components`, `composables` and `middleware` files in your project’s root directory (`rootDir`) during the build phase. The `.nuxtignore` file is subject to the same specification as `.gitignore` and `.eslintignore` files, in which each line is a glob pattern indicating which files should be ignored.
**Note**: You can also configure [`ignoreOptions`](/docs/api/configuration/nuxt-config#ignoreoptions), [`ignorePrefix`](/docs/api/configuration/nuxt-config#ignoreprefix) and [`ignore`](/docs/api/configuration/nuxt-config#ignore) in your `nuxt.config` file.