fix(nuxt): provide types for modules as array (#18416)

Co-authored-by: Daniel Roe <daniel@roe.dev>

packages/nuxt/src/core/templates.ts

@@ -121,14 +121,17 @@ export const schemaTemplate: NuxtTemplate<TemplateContext> = {
     })).filter(m => m.configKey && m.name && !adHocModules.includes(m.name))
 
     const relativeRoot = relative(resolve(nuxt.options.buildDir, 'types'), nuxt.options.rootDir)
+    const getImportName = (name: string) => (name.startsWith('.') ? './' + join(relativeRoot, name) : name).replace(/\.\w+$/, '')
+    const modules = moduleInfo.map(meta => [genString(meta.configKey), getImportName(meta.importName)])
 
     return [
       "import { NuxtModule } from '@nuxt/schema'",
       "declare module '@nuxt/schema' {",
       '  interface NuxtConfig {',
-      ...moduleInfo.filter(Boolean).map(meta =>
-        `    [${genString(meta.configKey)}]?: typeof ${genDynamicImport(meta.importName.startsWith('.') ? './' + join(relativeRoot, meta.importName) : meta.importName, { wrapper: false })}.default extends NuxtModule<infer O> ? Partial<O> : Record<string, any>`
+      ...modules.map(([configKey, importName]) =>
+        `    [${configKey}]?: typeof ${genDynamicImport(importName, { wrapper: false })}.default extends NuxtModule<infer O> ? Partial<O> : Record<string, any>`
       ),
+      modules.length > 0 ? `    modules?: (NuxtModule | string | [NuxtModule | string, Record<string, any>] | ${modules.map(([configKey, importName]) => `[${genString(importName)}, NuxtConfig[${configKey}]]`).join(' | ')})[],` : '',
       '  }',
       generateTypes(await resolveSchema(Object.fromEntries(Object.entries(nuxt.options.runtimeConfig).filter(([key]) => key !== 'public'))),
         {

test/fixtures/basic/modules/example.ts

@@ -3,7 +3,8 @@ import { defineNuxtModule, addPlugin, useNuxt } from '@nuxt/kit'
 
 export default defineNuxtModule({
   defaults: {
-    enabled: true
+    enabled: true,
+    typeTest: (value: boolean) => typeof value === 'boolean'
   },
   meta: {
     name: 'my-module',

test/fixtures/basic/nuxt.config.ts

@@ -55,7 +55,16 @@ export default defineNuxtConfig({
     }
   },
   modules: [
-    '~/modules/example',
+    [
+      '~/modules/example',
+      {
+        typeTest (val) {
+          // @ts-expect-error module type defines val as boolean
+          const b: string = val
+          return !!b
+        }
+      }
+    ],
     function (_, nuxt) {
       if (process.env.TEST_WITH_WEBPACK) { return }