fix: support import assertions

packages/playwright-test/ThirdPartyNotices.txt

@@ -42,6 +42,7 @@ This project incorporates components from the projects listed below. The origina
 -	@babel/[email protected] (https://github.com/babel/babel/tree/master/packages/babel-plugin-syntax-async-generators)
 -	@babel/[email protected] (https://github.com/babel/babel/tree/master/packages/babel-plugin-syntax-dynamic-import)
 -	@babel/[email protected] (https://github.com/babel/babel/tree/master/packages/babel-plugin-syntax-export-namespace-from)
+-	@babel/[email protected] (https://github.com/babel/babel)
 -	@babel/[email protected] (https://github.com/babel/babel/tree/master/packages/babel-plugin-syntax-json-strings)
 -	@babel/[email protected] (https://github.com/babel/babel)
 -	@babel/[email protected] (https://github.com/babel/babel)
@@ -1338,6 +1339,33 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 =========================================
 END OF @babel/[email protected] AND INFORMATION
 
+%% @babel/[email protected] NOTICES AND INFORMATION BEGIN HERE
+=========================================
+MIT License
+
+Copyright (c) 2014-present Sebastian McKenzie and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+=========================================
+END OF @babel/[email protected] AND INFORMATION
+
 %% @babel/[email protected] NOTICES AND INFORMATION BEGIN HERE
 =========================================
 MIT License
@@ -3841,6 +3869,6 @@ END OF [email protected] AND INFORMATION
 
 SUMMARY BEGIN HERE
 =========================================
-Total Packages: 131
+Total Packages: 132
 =========================================
 END OF SUMMARY

packages/playwright-test/bundles/babel/package.json

@@ -23,6 +23,7 @@
     "@babel/plugin-proposal-private-methods": "^7.18.6",
     "@babel/plugin-proposal-private-property-in-object": "^7.18.6",
     "@babel/plugin-syntax-async-generators": "^7.8.4",
+    "@babel/plugin-syntax-import-assertions": "^7.20.0",
     "@babel/plugin-syntax-json-strings": "^7.8.3",
     "@babel/plugin-syntax-object-rest-spread": "^7.8.3",
     "@babel/plugin-syntax-optional-catch-binding": "^7.8.3",

packages/playwright-test/bundles/babel/src/babelBundleImpl.ts

@@ -66,6 +66,8 @@ export function babelTransform(filename: string, isTypeScript: boolean, isModule
   if (!isModule) {
     plugins.push([require('@babel/plugin-transform-modules-commonjs')]);
     plugins.push([require('@babel/plugin-proposal-dynamic-import')]);
+  } else {
+    plugins.push([require('@babel/plugin-syntax-import-assertions')]);
   }
 
   plugins.unshift(additionalPlugin);

tests/playwright-test/esm.spec.ts

@@ -36,6 +36,28 @@ test('should load nested as esm when package.json has type module', async ({ run
   expect(result.passed).toBe(1);
 });
 
+test('should support import assertions', async ({ runInlineTest, nodeVersion }) => {
+  // We only support experimental esm mode on Node 16+
+  test.skip(nodeVersion.major < 16);
+  const result = await runInlineTest({
+    'playwright.config.ts': `
+      import packageJSON from './package.json' assert { type: 'json' };
+      export default { };
+    `,
+    'package.json': JSON.stringify({ type: 'module' }),
+    'a.esm.test.ts': `
+      const { test } = pwt;
+
+      test('check project name', ({}, testInfo) => {
+        expect(1).toBe(1);
+      });
+    `
+  });
+
+  expect(result.exitCode).toBe(0);
+  expect(result.passed).toBe(1);
+});
+
 test('should import esm from ts when package.json has type module in experimental mode', async ({ runInlineTest, nodeVersion }) => {
   // We only support experimental esm mode on Node 16+
   test.skip(nodeVersion.major < 16);