Customize meta content before it is highlighted in SearchWP

functions.php

<?php

function my_searchwp_th_pre_process_meta_value( $meta_value, $meta_key, $post_id ) {
  // TODO: Customize $meta_value where applicable.

  return $meta_value;
}

add_filter( 'searchwp_th_pre_process_meta_value', 'my_searchwp_th_pre_process_meta_value', 10, 3 );