magento-test/app/code/Magento/Persistent/view/frontend/templates/additional.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
?>
<script type="application/javascript">
    window.persistent = <?=/* @noEscape */ $block->getConfig()?>;
    window.notYouLink = '<?=/* @noEscape */ $block->getLinkAttributes()?>';
</script>
<script type="text/x-magento-init">
    {
        "li.greet.welcome > span.not-logged-in": {
            "Magento_Persistent/js/view/additional-welcome": {}
        }
    }
</script>