add test

Author: balazsorban44

test/integration/create-next-app/index.test.ts

@@ -1,6 +1,8 @@
 /* eslint-env jest */
+import { execSync } from 'child_process'
 import execa from 'execa'
 import fs from 'fs-extra'
+import { killApp, launchApp, findPort, waitFor } from 'next-test-utils'
 import os from 'os'
 import path from 'path'
 
@@ -482,4 +484,38 @@ describe('create next app', () => {
       )
     })
   })
+
+  it('should add `moduleResoution` when generating tsconfig.json', async () => {
+    await usingTempDir(async (cwd) => {
+      const projectName = 'tsconfig-generation'
+      const res = await run([projectName], { cwd })
+      expect(res.exitCode).toBe(0)
+
+      const tsconfigPath = path.join(cwd, projectName, 'tsconfig.json')
+      expect(fs.existsSync(tsconfigPath)).toBeFalse()
+
+      await execSync('pnpm add -D typescript @types/react', {
+        cwd: path.join(cwd, projectName),
+      })
+
+      const indexPath = path.join(cwd, projectName, 'pages', 'index.js')
+      await fs.rename(indexPath, indexPath.replace('.js', '.tsx'))
+
+      const appPort = await findPort()
+      const app = await launchApp(path.join(cwd, projectName), appPort)
+      await killApp(app)
+
+      expect(fs.existsSync(tsconfigPath)).toBeTrue()
+
+      const tsconfig = JSON.parse(
+        await fs.readFile(path.join(cwd, projectName, 'tsconfig.json'), 'utf8')
+      )
+
+      expect(tsconfig.compilerOptions).toEqual(
+        expect.objectContaining({
+          moduleResolution: 'node',
+        })
+      )
+    })
+  })
 })