Show SKU with product names in cart & checkout - WooCommerce

add_filter( 'woocommerce_cart_item_name', 'tl3er4_cart_item_name', 10, 3 );
function tl3er4_cart_item_name( $item_name,  $cart_item,  $cart_item_key ) {
    // Modify page slug
    if ( is_page( array( 'cart', 'quick-order' ) ) ) {
	    $product = $cart_item['data'];
	    if($product->get_sku()){
		    echo $item_name.' ('.$product->get_sku().')';
	    }else{
		    echo $item_name;	
	    }
    }else{
	    echo $item_name;
    }
}