Enqueue wc-cart-fragments on woocommerce pages (#2113)

* enqueue wc-cart-fragments on woocommerce pages

* bump tested up version

README.txt

@@ -5,7 +5,7 @@ Tested up to: 6.2.2
 Stable tag: 4.4.1
 Version: 4.4.1
 WC requires at least: 4.2
-WC tested up to: 7.7.0
+WC tested up to: 8.0.0
 License: GPLv3 or later
 License URI: https://www.gnu.org/licenses/gpl-3.0.html
 Tags: e-commerce, two-columns, left-sidebar, right-sidebar, custom-background, custom-colors, custom-header, custom-menu, featured-images, full-width-template, threaded-comments, accessibility-ready, rtl-language-support, footer-widgets, sticky-post, theme-options, editor-style

inc/class-storefront.php

@@ -32,6 +32,7 @@ public function __construct() {
 			add_filter( 'wp_page_menu_args', array( $this, 'page_menu_args' ) );
 			add_filter( 'navigation_markup_template', array( $this, 'navigation_markup_template' ) );
 			add_action( 'enqueue_embed_scripts', array( $this, 'print_embed_styles' ) );
+			add_filter( 'woocommerce_get_script_data', array( $this, 'limit_cart_sync_to_wc_pages' ), 10, 2 );
 		}
 
 		/**
@@ -354,6 +355,8 @@ public function scripts() {
 			 */
 			$suffix = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ? '' : '.min';
 
+			wp_enqueue_script( 'wc-cart-fragments' );
+
 			wp_enqueue_script( 'storefront-navigation', get_template_directory_uri() . '/assets/js/navigation' . $suffix . '.js', array(), $storefront_version, true );
 
 			if ( has_nav_menu( 'handheld' ) ) {
@@ -374,6 +377,24 @@ public function scripts() {
 			}
 		}
 
+		/**
+		 * Limit Cart Sync functionality to specific WooCommerce pages
+		 * More details: https://developer.woocommerce.com/2023/06/16/best-practices-for-the-use-of-the-cart-fragments-api/
+		 *
+		 * @param string $script_data The script data.
+		 * @param string $handle The script handle.
+		 * @return string|null
+		 */
+		public function limit_cart_sync_to_wc_pages( $script_data, $handle ) {
+			if ( 'wc-cart-fragments' === $handle ) {
+				if ( is_woocommerce() || is_cart() || is_checkout() ) {
+					return $script_data;
+				}
+				return null;
+			}
+			 return $script_data;
+		}
+
 		/**
 		 * Register Google fonts.
 		 *