Fix WASM_WORKERS + EXPORT_ES6 (#24923)

Fixes: #17664

Author: sbc100

src/lib/libwasm_worker.js

@@ -39,6 +39,9 @@
 #endif
 `;
   const wasmWorkerOptions = `{
+#if EXPORT_ES6
+  'type': 'module',
+#endif
 #if ENVIRONMENT_MAY_BE_NODE
   // This is the way that we signal to the node worker that it is hosting
   // a wasm worker.

test/test_browser.py

@@ -5095,6 +5095,9 @@ def test_system(self):
   def test_wasm_worker_hello(self):
     self.btest_exit('wasm_worker/hello_wasm_worker.c', cflags=['-sWASM_WORKERS', '-sENVIRONMENT=web'])
 
+  def test_wasm_worker_hello_export_es6(self):
+    self.btest_exit('wasm_worker/hello_wasm_worker.c', cflags=['-sWASM_WORKERS', '-sENVIRONMENT=web', '-sEXPORT_ES6'])
+
   def test_wasm_worker_hello_minimal_runtime_2(self):
     self.btest_exit('wasm_worker/hello_wasm_worker.c', cflags=['-sWASM_WORKERS', '-sMINIMAL_RUNTIME=2'])
 

test/test_other.py

@@ -14873,6 +14873,12 @@ def test_debug_opt_warning(self, should_fail, args):
   def test_wasm_worker_trusted_types(self):
     self.do_run_in_out_file_test('wasm_worker/hello_wasm_worker.c', cflags=['-sWASM_WORKERS', '-sTRUSTED_TYPES'])
 
+  def test_wasm_worker_export_es6(self):
+    self.do_run_in_out_file_test('wasm_worker/hello_wasm_worker.c', cflags=['-sWASM_WORKERS',
+                                                                            '-sEXPORT_ES6',
+                                                                            '--extern-post-js',
+                                                                            test_file('modularize_post_js.js')])
+
   def test_wasm_worker_terminate(self):
     self.do_runf('wasm_worker/terminate_wasm_worker.c', cflags=['-sWASM_WORKERS'])