Exclude no-index content from WordPress search

/**
 * Exclude noindex'd pages from site search
 *
 */
function be_exclude_noindex_from_search( $query ) {

	if( $query->is_main_query() && $query->is_search() && ! is_admin() ) {

		$meta_query = isset( $query->meta_query ) ? $query->meta_query : array();
		$meta_query['noindex'] = array(
			'key' => '_yoast_wpseo_meta-robots-noindex',
			'value' => 1,
			'compare' => 'NOT EXISTS',
		);

		$query->set( 'meta_query', $meta_query );
	}
}
add_action( 'pre_get_posts', 'be_exclude_noindex_from_search' );

/**
 * Exclude noindex'd pages from SearchWP search
 *
 */
function be_exclude_noindex_searchwp( $ids ) {
	$loop = new WP_Query( [
		'post_type'			=> [ 'post', 'page' ],
		'posts_per_page'	=> 999,
		'fields'			=> 'ids',
		'meta_query'		=> [
			[
				'key'		=> '_yoast_wpseo_meta-robots-noindex',
				'value'		=> 1,
			]
		]
	]);

	if( $loop->posts )
		$ids = array_merge( $ids, $loop->posts );
	
	return $ids;
}
add_filter( 'searchwp_exclude', 'be_exclude_noindex_searchwp' );