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diff --git a/src/mongo/scripting/mozjs/numberlong.h b/src/mongo/scripting/mozjs/numberlong.h
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+++ b/src/mongo/scripting/mozjs/numberlong.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 "mongo/scripting/mozjs/wraptype.h"
+
+namespace mongo {
+namespace mozjs {
+
+/**
+ * The "NumberLong" Javascript object.
+ *
+ * Represents a 64 integer with a JS representation like:
+ *
+ * {
+ *     top         : Double,
+ *     bottom      : Double,
+ *     floatApprox : Double,
+ * }
+ *
+ * Where top is the high 32 bits, bottom the low 32 bits and floatApprox a
+ * floating point approximation.
+ */
+struct NumberLongInfo : public BaseInfo {
+    static void construct(JSContext* cx, JS::CallArgs args);
+
+    struct Functions {
+        MONGO_DEFINE_JS_FUNCTION(toNumber);
+        MONGO_DEFINE_JS_FUNCTION(toString);
+        MONGO_DEFINE_JS_FUNCTION(valueOf);
+    };
+
+    static const JSFunctionSpec methods[4];
+
+    static const char* const className;
+
+    static long long ToNumberLong(JSContext* cx, JS::HandleObject object);
+    static long long ToNumberLong(JSContext* cx, JS::HandleValue value);
+};
+
+}  // namespace mozjs
+}  // namespace mongo