Nuxt/packages/nuxt/config.d.ts

import type { NuxtConfig } from 'nuxt/schema'
import type { ConfigLayerMeta, DefineConfig } from 'c12'
export { NuxtConfig } from 'nuxt/schema'

export interface DefineNuxtConfig extends DefineConfig<NuxtConfig, ConfigLayerMeta> {}
export declare const defineNuxtConfig: DefineNuxtConfig