diff --git a/lib/client/input.js b/lib/client/input.js
index 27935a70..251f0b26 100644
--- a/lib/client/input.js
+++ b/lib/client/input.js
@@ -33,9 +33,10 @@
         function convert(config) {
             var result  = clone(config),
                 array   = Object.keys(result),
-                isBool  = isType.bind(null, result, 'boolean');
+                isBool  = partial(isType, result, 'boolean');
             
-            mapCondition(array, isBool)
+            array
+                .filter(isBool)
                 .forEach(function(name) {
                     var item = result[name];
                     
@@ -55,6 +56,20 @@
             return result;
         }
         
+        function partial(fn) {
+            var i,
+                bind    = Function.prototype.bind,
+                n       = arguments.length,
+                args    = Array(n-1);
+            
+            args[0] = null;
+            
+            for (i = 1; i < n; i++)
+                args[i] = arguments[i];
+            
+            return bind.apply(fn, args);
+        }
+        
         function isType(object, type, name) {
             var current = typeof object[name],
                 is      = current === type;
@@ -62,19 +77,6 @@
             return is;
         }
         
-        function mapCondition(array, fn) {
-            var result = [];
-            
-            array.forEach(function(item) {
-                var is = fn(item);
-                
-                if (is)
-                    result.push(item);
-            });
-            
-            return result;
-        }
-        
         function setState(state) {
             var ret = '';