MAGETWO-38867: Create mixin for declarative widget description

Author: Ihor Melnychenko

lib/web/mage/apply/main.js

@@ -35,17 +35,17 @@ define([
     /**
      * Initializes mixins assigned to a specfied component.
      *
-     * @param {Object} mixins - object contains mixins list.
+     * @param {Object} mixinList - object contains mixins list.
      * @param {Object} itemContainer - object with component config and DOM element link.
      */
-    function initMixins(mixins, itemContainer){
+    function initMixins(mixinList, itemContainer){
         var configStack = {},
             element = itemContainer.el;
 
-        _.each(mixins, function (mixin, componentName) {
+        _.each(mixinList, function (mixin, componentName) {
             configStack = itemContainer.data[componentName];
             require(mixin, function(){
-                for (var i = 0, l = arguments.length; i < l; i++){
+                for (var i = 0, len = arguments.length; i < len; i++){
                     configStack = arguments[i](configStack, element);
                 }