newsupernova/vendor/magento/module-theme/view/frontend/templates/html/print.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
?>
<script>
    require(
        [
            'jquery'
        ],
        function($) {
            $(function() {
                window.print();
            });
        }
    );
</script>