add test for importless case

e2e/__tests__/typescriptConfigFile.test.ts

@@ -8,7 +8,7 @@
 import {tmpdir} from 'os';
 import * as path from 'path';
 import {cleanup, writeFiles} from '../Utils';
-import runJest from '../runJest';
+import runJest, {getConfig} from '../runJest';
 
 const DIR = path.resolve(tmpdir(), 'typescript-config-file');
 
@@ -107,3 +107,19 @@ test('works with multiple typescript configs that import something', () => {
   expect(exitCode).toBe(0);
   expect(stdout).toBe('');
 });
+
+test("works with single typescript config that does not import anything with project's moduleResolution set to Node16", () => {
+  const {configs} = getConfig(
+    'typescript-config/modern-module-resolution',
+    [],
+    {
+      skipPkgJsonCheck: true,
+    },
+  );
+
+  expect(configs).toHaveLength(1);
+  expect(configs[0].displayName).toEqual({
+    color: 'white',
+    name: 'Config from modern ts file',
+  });
+});

e2e/typescript-config/modern-module-resolution/__tests__/test.js

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+test('dummy test', () => {
+  expect(1).toBe(1);
+});

e2e/typescript-config/modern-module-resolution/jest.config.ts

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+const config = {
+  displayName: 'Config from modern ts file',
+  testEnvironment: 'node',
+};
+export default config;

e2e/typescript-config/modern-module-resolution/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}

e2e/typescript-config/modern-module-resolution/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "module": "Node16",
+    "moduleResolution": "Node16",
+    "strict": true
+  }
+}