test: add test

Author: sapphi-red

playground/include-node-modules/App.jsx

@@ -0,0 +1,17 @@
+import test from '@vitejs/test-package'
+
+function App() {
+  return (
+    <div>
+      <h1>Node Modules Include Test</h1>
+      <p>
+        This playground tests that files in node_modules are processed
+        correctly.
+      </p>
+
+      <p className="result">Result: {'' + test}</p>
+    </div>
+  )
+}
+
+export default App

playground/include-node-modules/__tests__/node-modules-include.spec.ts

@@ -0,0 +1,10 @@
+import { expect, test } from 'vitest'
+import { page } from '~utils'
+
+test('should render', async () => {
+  expect(await page.textContent('h1')).toMatch('Node Modules Include Test')
+})
+
+test('babel should run on files in node_modules', async () => {
+  expect(await page.textContent('.result')).toMatch('Result: true')
+})

playground/include-node-modules/index.html

@@ -0,0 +1,10 @@
+<div id="app"></div>
+<script type="module">
+  import React from 'react'
+  import ReactDOM from 'react-dom/client'
+  import App from './App.jsx'
+
+  ReactDOM.createRoot(document.getElementById('app')).render(
+    React.createElement(App),
+  )
+</script>

playground/include-node-modules/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "@vitejs/test-node-modules-include",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^19.1.0",
+    "react-dom": "^19.1.0"
+  },
+  "devDependencies": {
+    "@types/babel__core": "^7.20.5",
+    "@types/react": "^19.1.8",
+    "@types/react-dom": "^19.1.6",
+    "@vitejs/plugin-react": "workspace:*",
+    "@vitejs/test-package": "file:./test-package"
+  }
+}

playground/include-node-modules/test-package/index.js

@@ -0,0 +1 @@
+export default TEST_BABEL

playground/include-node-modules/test-package/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "test-package",
+  "version": "1.0.0",
+  "main": "index.js",
+  "type": "module"
+}

playground/include-node-modules/vite.config.ts

@@ -0,0 +1,28 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import type { PluginItem as BabelPlugin } from '@babel/core'
+
+export default defineConfig({
+  plugins: [
+    react({
+      exclude: [/\/node_modules\/(?!(\.pnpm\/)?test-package)/],
+      babel: {
+        plugins: [
+          ({ types: t }): BabelPlugin => ({
+            name: 'test-replace-test-babel',
+            visitor: {
+              Identifier(path) {
+                if (path.node.name === 'TEST_BABEL') {
+                  path.replaceWith(t.booleanLiteral(true))
+                }
+              },
+            },
+          }),
+        ],
+      },
+    }),
+  ],
+  optimizeDeps: {
+    exclude: ['@vitejs/test-package'],
+  },
+})

playground/react/package.json

@@ -9,7 +9,7 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "jsx-entry": "file:./jsx-entry",
+    "jsx-entry": "link:./jsx-entry",
     "react": "^19.1.0",
     "react-dom": "^19.1.0"
   },

pnpm-lock.yaml

@@ -10,3 +10,5 @@ catalogs:
 
 overrides:
   '@types/estree': ^1.0.8
+
+dedupeInjectedDeps: false