a method for proper inheritance

lib/utils.js

@@ -155,6 +155,22 @@ var Utils = module.exports = {
     } else {
     } else {
       return hash
       return hash
     }
     }
+  },
+
+  inherit: function(subClass, superClass) {
+    if (superClass.constructor == Function) {
+      // Normal Inheritance
+      subClass.prototype = new superClass();
+      subClass.prototype.constructor = subClass;
+      subClass.prototype.parent = superClass.prototype;
+    } else {
+      // Pure Virtual Inheritance
+      subClass.prototype = superClass;
+      subClass.prototype.constructor = subClass;
+      subClass.prototype.parent = superClass;
+    }
+
+    return subClass;
   }
   }
 }
 }