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diff --git a/src/mongo/scripting/mozjs/idwrapper.h b/src/mongo/scripting/mozjs/idwrapper.h
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+++ b/src/mongo/scripting/mozjs/idwrapper.h
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+/**
+ * Copyright (C) 2015 MongoDB Inc.
+ *
+ * This program is free software: you can redistribute it and/or  modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, the copyright holders give permission to link the
+ * code of portions of this program with the OpenSSL library under certain
+ * conditions as described in each individual source file and distribute
+ * linked combinations including the program with the OpenSSL library. You
+ * must comply with the GNU Affero General Public License in all respects
+ * for all of the code used other than as permitted herein. If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so. If you do not
+ * wish to do so, delete this exception statement from your version. If you
+ * delete this exception statement from all source files in the program,
+ * then also delete it in the license file.
+ */
+
+#pragma once
+
+#include <jsapi.h>
+#include <string>
+
+#include "mongo/base/string_data.h"
+
+namespace mongo {
+namespace mozjs {
+
+/**
+ * Wraps jsid's to make them slightly easier to use
+ *
+ * As these own a JS::RootedId they're not movable or copyable
+ *
+ * IdWrapper should only be used on the stack, never in a heap allocation
+ */
+class IdWrapper {
+public:
+    IdWrapper(JSContext* cx, JS::HandleId id);
+
+    /**
+     * Converts to a string.  This coerces for integers
+     */
+    std::string toString() const;
+
+    /**
+     * Converts to an int.  This throws if the id is not an integer
+     */
+    uint32_t toInt32() const;
+
+    bool isString() const;
+    bool isInt() const;
+
+    bool equals(StringData sd) const;
+
+private:
+    JSContext* _context;
+    JS::RootedId _value;
+};
+
+}  // namespace mozjs
+}  // namespace mongo