function layouts() {
  \register_rest_route(
    'genesis/v1',
    '/layouts/(?P<type>[a-z0-9,_-]+)',
    [
      'methods'             => 'GET',
      'callback'            => function( $params ) {
        $type = $params['type'];
        if ( strpos( $type, ',' ) !== false ) {
          $type = explode( ',', $type );
        }
        return \genesis_get_layouts( $type );
      },
      'permission_callback' => '__return_true',
    ]
  );
}