facetwp remove search from fselect

custom-hooks.php

<?php
/**
 ** set option to disable fselect search field
 **/
add_action( 'wp_footer', function() { ?>
    <script>
        (function($) {
            FWP.hooks.addFilter('facetwp/set_options/fselect', function(opts, facet) {
                if (facet.facet_name == 'product_categories') {
                    opts.showSearch = false;
                    return opts;
                }
            });
        })(jQuery);
    </script>
<?php }, 100 );