fix(kit): properly resolve _nuxtConfigFiles

packages/kit/src/config/load.ts

@@ -1,8 +1,8 @@
 import { resolve } from 'path'
 import defu from 'defu'
-import jiti from 'jiti'
 import { applyDefaults } from 'untyped'
 import * as rc from 'rc9'
+import { tryResolveModule, requireModule, scanRequireTree } from '../utils/cjs'
 import { NuxtOptions } from '../types/config'
 import nuxtConfigSchema from './schema'
 
@@ -15,28 +15,15 @@ export interface LoadNuxtConfigOptions {
 export function loadNuxtConfig (opts: LoadNuxtConfigOptions): NuxtOptions {
   const rootDir = resolve(process.cwd(), opts.rootDir || '.')
 
-  const _require = jiti(rootDir)
-
-  let configFile
-  try {
-    configFile = _require.resolve(resolve(rootDir, opts.configFile || 'nuxt.config'))
-  } catch (e) {
-    if (e.code !== 'MODULE_NOT_FOUND') {
-      throw (e)
-    }
-    // Skip if cannot resolve
-    configFile = undefined
-  }
+  const nuxtConfigFile = tryResolveModule(resolve(rootDir, opts.configFile || 'nuxt.config'))
 
   let nuxtConfig: any = {}
 
-  if (configFile) {
-    // clearRequireCache(configFile) TODO
-    nuxtConfig = _require(configFile) || {}
-    if (nuxtConfig.default) {
-      nuxtConfig = nuxtConfig.default
-    }
+  if (nuxtConfigFile) {
+    nuxtConfig = requireModule(nuxtConfigFile, { clearCache: true })
     nuxtConfig = { ...nuxtConfig }
+    nuxtConfig._nuxtConfigFile = nuxtConfigFile
+    nuxtConfig._nuxtConfigFiles = Array.from(scanRequireTree(nuxtConfigFile))
   }
 
   // Combine configs

packages/kit/src/config/schema/_common.ts

@@ -88,14 +88,6 @@ export default {
     }
   },
 
-  _nuxtConfigFile: {
-    $resolve: (val, get) => resolve(get('rootDir'), val || 'nuxt.config.js')
-  },
-
-  _nuxtConfigFiles: {
-    $resolve: (val, get) => [].concat(get('_nuxtConfigFile'), val).filter(Boolean)
-  },
-
   modulesDir: {
     $default: ['node_modules'],
     $resolve: (val, get) => [].concat(
@@ -143,7 +135,7 @@ export default {
   },
 
   watch: {
-    $resolve: (_val, get) => [].concat(get._nuxtConfigFiles).filter(Boolean)
+    $resolve: (val, get) => [].concat(val, get('_nuxtConfigFiles')).filter(Boolean)
   },
 
   watchers: {

packages/kit/src/config/schema/_internal.ts

@@ -6,6 +6,8 @@ export default {
   _generate: false,
   _cli: false,
   _requiredModules: {},
+  _nuxtConfigFile: undefined,
+  _nuxtConfigFiles: [],
   appDir: '',
   vite: false
 }