MAGETWO-66627: [GitHub] Default Post Code is applied for all Order's addresses if zip is not required

Author: slamking

app/code/Magento/Checkout/view/frontend/web/js/model/default-post-code-resolver.js

@@ -3,32 +3,35 @@
  * See COPYING.txt for license details.
  */
 define([], function () {
+    'use strict';
+
     /**
      * Define necessity of using default post code value
      */
     var useDefaultPostCode;
 
     return {
-
         /**
          * Resolve default post code
          *
-         * @returns {string|undefined}
+         * @returns {String|undefined}
          */
-        resolve: function () {
+        resolve: function ()
+        {
             return useDefaultPostCode ?  window.checkoutConfig.defaultPostcode : undefined;
         },
 
         /**
          * Set state to useDefaultPostCode variable
          *
-         * @param shouldUseDefaultPostCode
+         * @param {Boolean} shouldUseDefaultPostCode
          * @returns {underscore}
          */
         setUseDefaultPostCode: function (shouldUseDefaultPostCode)
         {
             useDefaultPostCode = shouldUseDefaultPostCode;
+
             return this;
         }
     };
-});
+});

app/code/Magento/Ui/view/base/web/js/form/element/region.js

@@ -11,7 +11,7 @@ define([
     'uiRegistry',
     './select',
     'Magento_Checkout/js/model/default-post-code-resolver'
-], function (_, registry, Select, DefaultPostCodeResolver) {
+], function (_, registry, Select, defaultPostCodeResolver) {
     'use strict';
 
     return Select.extend({
@@ -35,9 +35,10 @@ define([
                 return;
             }
             option = options[value];
-            DefaultPostCodeResolver
-                .setUseDefaultPostCode('undefined' !== typeof option.is_zipcode_optional &&
-                true === option.is_zipcode_optional ? false : true);
+            defaultPostCodeResolver
+                .setUseDefaultPostCode(typeof option.is_zipcode_optional !== 'undefined'&&
+                option.is_zipcode_optional === true ? false : true);
+
             if (this.skipValidation) {
                 this.validation['required-entry'] = false;
                 this.required(false);