fix

assets/support/support.js

@@ -52,6 +52,13 @@ __PluginManager__.register('support', function(module, exports, require, global)
             val === 0 ||
             val === false;
     }
+    function emptyEx(val) {
+        return empty(val) ||
+            (isObject(val) && (function () {
+                for(v in val) return false;
+                return true;
+            })());
+    }
     function typeOf(value) {
         return typeof value;
     }
@@ -105,6 +112,9 @@ __PluginManager__.register('support', function(module, exports, require, global)
             }
         }
     };
+    function isA(o,c){
+        return null!=c&&"undefined"!=typeof Symbol&&c[Symbol.hasInstance]?!!c[Symbol.hasInstance](o):o instanceof c
+    }
 
 
     /**
@@ -127,6 +137,7 @@ __PluginManager__.register('support', function(module, exports, require, global)
         isElement,
         getNode,
         extend,
+        isA
     };
 
     return module.exports = support;