add test

test/e2e/app-dir/app-alias.test.ts

@@ -0,0 +1,37 @@
+import { createNext, FileRef } from 'e2e-utils'
+import { NextInstance } from 'test/lib/next-modes/base'
+import { renderViaHTTP } from 'next-test-utils'
+import path from 'path'
+
+describe('app-dir alias handling', () => {
+  if ((global as any).isNextDeploy) {
+    it('should skip next deploy for now', () => {})
+    return
+  }
+
+  if (process.env.NEXT_TEST_REACT_VERSION === '^17') {
+    it('should skip for react v17', () => {})
+    return
+  }
+
+  let next: NextInstance
+
+  beforeAll(async () => {
+    next = await createNext({
+      files: new FileRef(path.join(__dirname, 'app-alias')),
+      dependencies: {
+        react: 'experimental',
+        'react-dom': 'experimental',
+        typescript: 'latest',
+        '@types/react': 'latest',
+        '@types/node': 'latest',
+      },
+    })
+  })
+  afterAll(() => next.destroy())
+
+  it('should handle typescript paths alias correctly', async () => {
+    const html = await renderViaHTTP(next.url, '/button')
+    expect(html).toContain('<button>click</button>')
+  })
+})

test/e2e/app-dir/app-alias/app/button/page.tsx

@@ -0,0 +1,5 @@
+import Button from '@/ui/button'
+
+export default function page() {
+  return <Button>click</Button>
+}

test/e2e/app-dir/app-alias/next.config.js

@@ -0,0 +1,8 @@
+module.exports = {
+  experimental: {
+    appDir: true,
+    serverComponents: true,
+    legacyBrowsers: false,
+    browsersListForSwc: true,
+  },
+}

test/e2e/app-dir/app-alias/tsconfig.json

@@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+    "target": "ES6",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "incremental": true,
+    "baseUrl": ".",
+    "paths": {
+      "@/ui/*": ["ui/*"]
+    }
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
+  "exclude": ["node_modules"]
+}

test/e2e/app-dir/app-alias/ui/button.tsx

@@ -0,0 +1,3 @@
+export default function Button(props: any) {
+  return <button {...props} />
+}