MAGETWO-90663: Error/Exception is thrown when user tries to delete product from /checkout/cart page after already been removed from mini-shopping cart

Author: Joan He

app/code/Magento/Checkout/view/frontend/web/js/shopping-cart.js

@@ -12,7 +12,7 @@ define([
     $.widget('mage.shoppingCart', {
         /** @inheritdoc */
         _create: function () {
-            var items, i;
+            var items, i, reload;
 
             $(this.options.emptyCartButton).on('click', $.proxy(function () {
                 $(this.options.emptyCartButton).attr('name', 'update_cart_action_temp');
@@ -36,6 +36,27 @@ define([
             $(this.options.continueShoppingButton).on('click', $.proxy(function () {
                 location.href = this.options.continueShoppingUrl;
             }, this));
+
+            $(document).on('ajax:removeFromCart', $.proxy(function () {
+                reload = true;
+                $('div.block.block-minicart').on('dropdowndialogclose', $.proxy(function () {
+                    if (reload === true) {
+                        location.reload();
+                        reload = false;
+                    }
+                    $('div.block.block-minicart').off('dropdowndialogclose');
+                }));
+            }, this));
+            $(document).on('ajax:updateItemQty', $.proxy(function () {
+                reload = true;
+                $('div.block.block-minicart').on('dropdowndialogclose', $.proxy(function () {
+                    if (reload === true) {
+                        location.reload();
+                        reload = false;
+                    }
+                    $('div.block.block-minicart').off('dropdowndialogclose');
+                }));
+            }, this));
         }
     });
 

app/code/Magento/Checkout/view/frontend/web/js/sidebar.js

@@ -213,6 +213,7 @@ define([
          */
         _updateItemQtyAfter: function (elem) {
             this._hideItemButton(elem);
+            $(document).trigger('ajax:updateItemQty');
         },
 
         /**