MAGETWO-69210: [Google Tag Manager] Ajax "Add to Cart" / "Remove from Cart" do not fire any events

Author: VladimirZaets

app/code/Magento/Catalog/view/frontend/templates/product/list.phtml

@@ -122,7 +122,7 @@ $_helper = $this->helper('Magento\Catalog\Helper\Output');
         {
             "[data-role=tocart-form], .form.map.checkout": {
                 "catalogAddToCart": {
-                    "product_sku": "<?= /* @escapeNotVerified */ $_product->getSku() ?>"
+                    "product_sku": "<?= $_product->getSku() ?>"
                 }
             }
         }

app/code/Magento/Catalog/view/frontend/templates/product/view/form.phtml

@@ -16,8 +16,8 @@
 <?php $_product = $block->getProduct(); ?>
 
 <div class="product-add-form">
-    <form data-product-sku="<?= /* @escapeNotVerified */ $_product->getSku() ?>"
-          action="<?= /* @escapeNotVerified */ $block->getSubmitUrl($_product) ?>" method="post"
+    <form data-product-sku="<?= $_product->getSku() ?>"
+          action="<?= $block->getSubmitUrl($_product) ?>" method="post"
           id="product_addtocart_form"<?php if ($_product->getOptions()): ?> enctype="multipart/form-data"<?php endif; ?>>
         <input type="hidden" name="product" value="<?= /* @escapeNotVerified */ $_product->getId() ?>" />
         <input type="hidden" name="selected_configurable_option" value="" />

app/code/Magento/Theme/view/frontend/templates/js/polyfill.phtml

@@ -3,6 +3,13 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
+/**
+ * Polyfill for local storage and session storage for old browsers and with enabled private mode.
+ *
+ * Emulates behavior of the native local storage and session storage. Adds ability to use "getItem", "setItem",
+ * "removeItem" methods.
+ */
 ?>
 
 <script>