<?php /** * @author Amasty Team * @copyright Copyright (c) Amasty (https://www.amasty.com) * @package Elastic Search Base for Magento 2 */ ?> <script type="text/javascript">
    require(
        [
            'Magento_Ui/js/lib/validation/validator',
            'jquery',
            'mage/translate'
        ], function(validator, $){

            validator.addRule('validate-stop-word', function (value) {
                return value.match(/^[^\s]+$/g);
            }, $.mage.__('Stop words should not contain whitespaces.')
        );
    });</script>