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diff --git a/Source/JavaScriptCore/parser/ModuleAnalyzer.h b/Source/JavaScriptCore/parser/ModuleAnalyzer.h
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+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ModuleAnalyzer_h
+#define ModuleAnalyzer_h
+
+#include "Nodes.h"
+
+namespace JSC {
+
+class JSModuleRecord;
+class SourceCode;
+
+class ModuleAnalyzer {
+    WTF_MAKE_NONCOPYABLE(ModuleAnalyzer);
+public:
+    ModuleAnalyzer(ExecState*, const Identifier& moduleKey, const SourceCode&, const VariableEnvironment& declaredVariables, const VariableEnvironment& lexicalVariables);
+
+    JSModuleRecord* analyze(ModuleProgramNode&);
+
+    VM& vm() { return *m_vm; }
+
+    JSModuleRecord* moduleRecord() { return m_moduleRecord.get(); }
+
+    void declareExportAlias(const Identifier& localName, const Identifier& exportName);
+
+private:
+    typedef HashMap<RefPtr<UniquedStringImpl>, Identifier, IdentifierRepHash, HashTraits<RefPtr<UniquedStringImpl>>> IdentifierAliasMap;
+
+    void exportVariable(const RefPtr<UniquedStringImpl>&, const VariableEnvironmentEntry&);
+
+    Identifier exportedBinding(const RefPtr<UniquedStringImpl>& ident);
+
+    VM* m_vm;
+    Strong<JSModuleRecord> m_moduleRecord;
+    IdentifierAliasMap m_aliasMap;
+};
+
+} // namespace JSC
+
+#endif // ModuleAnalyzer_h