fix(kit): resolve module node_modules for modulesDir (#25548)

packages/kit/src/index.ts

@@ -20,7 +20,7 @@ export * from './pages'
 export * from './plugin'
 export * from './resolve'
 export * from './nitro'
-export * from './template'
+export { addTemplate, addTypeTemplate, normalizeTemplate, updateTemplates, writeTypes } from './template'
 export * from './logger'
 
 // Internal Utils

packages/kit/src/module/install.ts

@@ -38,7 +38,7 @@ export async function installModule (moduleToInstall: string | NuxtModule, inlin
     nuxt.options.build.transpile.push(normalizeModuleTranspilePath(moduleToInstall))
     const directory = getDirectory(moduleToInstall)
     if (directory !== moduleToInstall && !localLayerModuleDirs.has(directory)) {
-      nuxt.options.modulesDir.push(directory)
+      nuxt.options.modulesDir.push(resolve(directory, 'node_modules'))
     }
   }
 

packages/kit/src/template.ts

@@ -110,7 +110,8 @@ export function normalizeTemplate <T>(template: NuxtTemplate<T> | string): Resol
 export async function updateTemplates (options?: { filter?: (template: ResolvedNuxtTemplate<any>) => boolean }) {
   return await tryUseNuxt()?.hooks.callHook('builder:generateApp', options)
 }
-export async function writeTypes (nuxt: Nuxt) {
+
+export async function _generateTypes (nuxt: Nuxt) {
   const nodeModulePaths = getModulePaths(nuxt.options.modulesDir)
 
   const rootDirWithSlash = withTrailingSlash(nuxt.options.rootDir)
@@ -248,6 +249,15 @@ export async function writeTypes (nuxt: Nuxt) {
     ''
   ].join('\n')
 
+  return {
+    declaration,
+    tsConfig
+  }
+}
+
+export async function writeTypes (nuxt: Nuxt) {
+  const { tsConfig, declaration } = await _generateTypes(nuxt)
+
   async function writeFile () {
     const GeneratedBy = '// Generated by nuxi'
 

packages/kit/test/generate-types.spec.ts

@@ -0,0 +1,65 @@
+import { describe, expect, it } from 'vitest'
+import type { Nuxt, NuxtConfig } from '@nuxt/schema'
+import { defu } from 'defu'
+
+import { _generateTypes } from '../src/template'
+
+type DeepPartial<T> = {
+  [P in keyof T]?: T[P] extends Record<string, any> ? DeepPartial<T[P]> : T[P]
+}
+
+const mockNuxt = {
+  options: {
+    rootDir: '/my-app',
+    srcDir: '/my-app',
+    alias: {
+      '~': '/my-app',
+      'some-custom-alias': '/my-app/some-alias'
+    },
+    typescript: { includeWorkspace: false },
+    buildDir: '/my-app/.nuxt',
+    modulesDir: ['/my-app/node_modules', '/node_modules'],
+    modules: [],
+    _layers: [{ config: { srcDir: '/my-app' } }],
+    _installedModules: [],
+    _modules: [],
+  },
+  callHook: () => {},
+} satisfies DeepPartial<Nuxt> as unknown as Nuxt
+
+const mockNuxtWithOptions = (options: NuxtConfig) => defu({ options }, mockNuxt) as Nuxt
+
+describe('tsConfig generation', () => {
+  it('should add add correct relative paths for aliases', async () => {
+    const { tsConfig } = await _generateTypes(mockNuxt)
+    expect(tsConfig.compilerOptions?.paths).toMatchInlineSnapshot(`
+      {
+        "#build": [
+          ".",
+        ],
+        "some-custom-alias": [
+          "../some-alias",
+        ],
+        "~": [
+          "..",
+        ],
+      }
+    `)
+  })
+
+  it('should add add exclude for module paths', async () => {
+    const { tsConfig } = await _generateTypes(mockNuxtWithOptions({
+      modulesDir: ['/my-app/modules/test/node_modules', '/my-app/modules/node_modules', '/my-app/node_modules/@some/module/node_modules']
+    }))
+    expect(tsConfig.exclude).toMatchInlineSnapshot(`
+      [
+        "../modules/test/node_modules",
+        "../modules/node_modules",
+        "../node_modules/@some/module/node_modules",
+        "../node_modules",
+        "../../node_modules",
+        "../dist",
+      ]
+    `)
+  })
+})