facetwp reset facets on search

custom-hooks.php

<?php

/** reset a facet (facet 2) on submission of different facet (facet 1)
 ** change 'search' to name of facet 1
 ** change 'product_categories' to the name of the facet 2
 **/
add_action( 'wp_footer', function() {
	?>
    <script>
        (function($) {
            $(document).on('facetwp-refresh', function() {
                if ( 'undefined' !== typeof FWP.facets['search'] && FWP.facets['search'].length < 1 ) {
                    FWP.facets['product_categories'] = [];
                }
            });
        })(jQuery);
    </script>
	<?php
}, 100 );