Updated gist to filter results as per catalog visibility

gistfile1.php

<?php
// Use filter_by to filter data based on the catalog visibility 
// On autocomplete bar
add_action( 'cm_tsfwc_additional_autocomplete_params', 'eolpoynt_cm_tsfwc_additional_autocomplete_params' );
function eolpoynt_cm_tsfwc_additional_autocomplete_params($args) {
    $args['filter_by'] = 'catalog_visibility: search || catalog_visibility: visible';
    return $args;
}

// On instant search
add_action( 'cm_tsfwc_additional_search_params', 'eolpoynt_cm_tsfwc_additional_search_params' );
function eolpoynt_cm_tsfwc_additional_search_params($args) {
    $args['filter_by'] = 'catalog_visibility: visible';
    return $args;
}