oberr is just a function

node_modules/c9/oberr.js

@@ -4,7 +4,7 @@ define(function(require, exports, module) {
      * Turns a JS Error into a proper object that can be stringified 
      * https://github.com/timjrobinson/oberr for more information
     **/
-    exports.oberr = function(err) {
+    return function oberr(err) {
         var ob = {};
         Object.getOwnPropertyNames(err).forEach(function(key) {
             ob[key] = err[key];