feat(getVitestConfig): pass custom nuxt instance and config to `getVi…

…testConfig` (#22)

package.json

@@ -60,11 +60,11 @@
   "dependencies": {
     "@nuxt/kit": "^3.0.0",
     "@vue/test-utils": "^2.2.6",
+    "estree-walker": "^3.0.1",
     "h3": "^1.0.2",
     "happy-dom": "^8.1.0",
-    "ofetch": "^1.0.0",
     "magic-string": "^0.27.0",
-    "estree-walker": "^3.0.1",
+    "ofetch": "^1.0.0",
     "unenv": "^1.0.0"
   },
   "devDependencies": {

src/config.ts

@@ -1,11 +1,16 @@
-import { loadNuxt, buildNuxt } from '@nuxt/kit'
 import type { Nuxt } from '@nuxt/schema'
 import type { InlineConfig as VitestConfig } from 'vitest'
 import { InlineConfig, mergeConfig, defineConfig } from 'vite'
 import modules from './module'
 
+interface GetVitestConfigOptions {
+  nuxt: Nuxt
+  viteConfig: InlineConfig
+}
+
 // https://github.com/nuxt/framework/issues/6496
 async function getNuxtAndViteConfig(rootDir = process.cwd()) {
+  const { loadNuxt, buildNuxt } = await import('@nuxt/kit')
   const nuxt = await loadNuxt({
     cwd: rootDir,
     dev: false,
@@ -20,9 +25,9 @@ async function getNuxtAndViteConfig(rootDir = process.cwd()) {
   nuxt.options.modules.push(modules)
   await nuxt.ready()
 
-  return new Promise<{ nuxt: Nuxt, config: InlineConfig }>((resolve, reject) => {
-    nuxt.hook('vite:extendConfig', config => {
-      resolve({ nuxt, config })
+  return new Promise<GetVitestConfigOptions>((resolve, reject) => {
+    nuxt.hook('vite:extendConfig', viteConfig => {
+      resolve({ nuxt, viteConfig })
       throw new Error('_stop_')
     })
     buildNuxt(nuxt).catch(err => {
@@ -33,13 +38,13 @@ async function getNuxtAndViteConfig(rootDir = process.cwd()) {
   }).finally(() => nuxt.close())
 }
 
-export async function getVitestConfig(): Promise<
-  InlineConfig & { test: VitestConfig }
-> {
-  const { config: viteConfig, nuxt } = await getNuxtAndViteConfig()
+export async function getVitestConfig(
+  options?: GetVitestConfigOptions
+): Promise<InlineConfig & { test: VitestConfig }> {
+  if (!options) options = await getNuxtAndViteConfig()
 
   return {
-    ...viteConfig,
+    ...options.viteConfig,
     test: {
       environment: 'nuxt',
       deps: {
@@ -50,12 +55,15 @@ export async function getVitestConfig(): Promise<
           // additional deps
           'vue',
           'vitest-environment-nuxt',
-          ...nuxt.options.build.transpile.filter(r => typeof r === 'string' || r instanceof RegExp) as Array<string | RegExp>,
+          ...(options.nuxt.options.build.transpile.filter(
+            r => typeof r === 'string' || r instanceof RegExp
+          ) as Array<string | RegExp>),
         ],
       },
     },
   }
 }
+
 export async function defineConfigWithNuxtEnv(config: InlineConfig = {}) {
   return defineConfig(async () => {
     return mergeConfig(await getVitestConfig(), config)