set result = null on error

Author: s0ph1e

lib/load.js

@@ -324,10 +324,10 @@ var Loader = function (data) {
       callback = typeof callback === 'function' ? callback : noop;
 
       if (!options.path) {
-        return callback(new Error('Path is not defined'));
+        return callback(new Error('Path is not defined'), null);
       }
       if (fs.existsSync(options.path)) {
-        return callback(new Error('Path ' + options.path + ' exists'));
+        return callback(new Error('Path ' + options.path + ' exists'), null);
       }
 
       process()
@@ -336,7 +336,7 @@ var Loader = function (data) {
         })
         .catch(function (e) {
           errorCleanup();
-          return callback(e);
+          return callback(e, null);
         });
     }
   }