diff --git a/lib/util.js b/lib/util.js
index a609a2f5..bcfe8ada 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -526,97 +526,30 @@
             }
             
             /**
-             * functions check is variable is array
+             * functions check is variable is type of name
+             * 
              * @param variable
              */
-            type.array          = function(variable) {
-                var result;
-                
-                if (Array.isArray)
-                    result = Array.isArray(variable) ;
-                else
-                    result = type(variable) === 'array';
-                
-                return result;
-            };
+            function typeOf(name, variable) {
+                return type(variable) === name;
+            }
             
-            /**
-             * functions check is variable is arrayBuffer
-             * @param variable
-             */
-            type.arrayBuffer    = function(variable) {
-                return type(variable) === 'arraybuffer';
-            };
+            function typeOfSimple(name, variable) {
+                return typeof variable === name;
+            }
             
-            /**
-             * functions check is variable is boolean
-             * @param variable
-             */
-            type.boolean               = function(variable) {
-                return typeof variable === 'boolean';
-            };
+            ['arrayBuffer', 'object', 'file', 'array']
+                .forEach(function(name) {
+                    type[name] = typeOf.bind(null, name);
+                });
             
-            /**
-             * functions check is variable is function
-             * @param variable
-             */
-            type.function               = function(variable) {
-                return typeof variable === 'function';
-            };
-            
-            /**
-             * functions check is variable is number
-             * @param variable
-             */
-            type.number               = function(variable) {
-                return typeof variable === 'number';
-            };
-            
-            /**
-             * functions check is variable is object
-             * @param variable
-             */
-            type.object               = function(variable) {
-                var type    = Util.type(variable),
-                    is      = type === 'object';
-                
-                return is;
-            };
-            
-            /**
-             * functions check is variable is string
-             * @param variable
-             */
-            type.string               = function(variable) {
-                return typeof variable === 'string';
-            };
-            
-            /**
-             * functions check is variable is string
-             * @param variable
-             */
-            type.undefined            = function(variable) {
-                return typeof variable === 'undefined';
-            };
-            
-            /**
-             * functions check is variable is File
-             * @param variable
-             */
-            type.file                 = function(variable) {
-                var FILE = '[object File]',
-                    name, is;
-                
-                name    = Util.exec.ifExist(variable, 'toString');
-                
-                is      = name === FILE;
-                
-                return is;
-            };
+            ['string', 'undefined', 'boolean', 'number', 'function']
+                .forEach(function(name) {
+                    type[name] = typeOfSimple.bind(null, name);
+                });
             
             return type;
         }
-        
         /**
          * function return false
          */