1 files changed, 30 insertions, 0 deletions
diff --git a/js/xpconnect/loader/ModuleEnvironmentProxy.h b/js/xpconnect/loader/ModuleEnvironmentProxy.h
new file mode 100644
index 0000000000..d59f6de5b3
--- /dev/null
+++ b/js/xpconnect/loader/ModuleEnvironmentProxy.h
@@ -0,0 +1,30 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_loader_ModuleEnvironmentProxy_h
+#define mozilla_loader_ModuleEnvironmentProxy_h
+
+#include "js/TypeDecls.h"   // JSContext, JSObject
+#include "js/RootingAPI.h"  // JS::Handle
+
+namespace mozilla {
+namespace loader {
+
+// Create an object that works in the same way as global object returned by
+// `Cu.import`. This proxy exposes all global variables, including lexical
+// variables.
+//
+// This is a temporary workaround to support not-in-tree code that depends on
+// `Cu.import` return value.
+//
+// This will eventually be removed once ESM-ification finishes.
+JSObject* CreateModuleEnvironmentProxy(JSContext* aCx,
+                                       JS::Handle<JSObject*> aModuleObj);
+
+}  // namespace loader
+}  // namespace mozilla
+
+#endif  // mozilla_loader_ModuleEnvironmentProxy_h