Woocommerce ajax return empty shipping packages

Question

Am trying to get the shipping packages with ajax but its always returning empty value.

same issue while trying to call get the zones with: WC_Shipping_Zones::get_zones();

am using the same code in woocommerce_checkout_before_order_review and its working without any issue!

function jsforwp_add_like() {

  check_ajax_referer( 'jsforwp_likes_nonce' );

  $packages    = WC()->shipping->get_packages();

    if(empty($packages)){
        $check = 'empty';
    }else{
        $check = $packages;
    }
    $success = true;
  if( true == $success ) {
    $response['type'] = 'success';
    $response['zone'] = $check;

  }

  $response = json_encode( $response );
  echo $response ;
  die();

}
add_action( 'wp_ajax_jsforwp_add_like', 'jsforwp_add_like' );
add_action( 'wp_ajax_nopriv_jsforwp_add_like', 'jsforwp_add_like' );

My javascript

add_action('wp_footer','my_custom_ajax');
function my_custom_ajax(){
?>
<script>
(function($){

  $( document.body ).on( 'updated_checkout', function(){
    $.ajax({
      type : 'post',
      dataType : 'json',
      url : jsforwp_globals.ajax_url,
      data : {
        action: 'jsforwp_add_like',
        _ajax_nonce: jsforwp_globals.nonce
      },
      success: function( response ) {
         if( 'success' == response.type ) {
            console.log( response );
         }
         else {
            console.log( 'Something went wrong, try logging in!' );
         }
      }
    });

  } );

} )( jQuery );
</script>
<?php
}

returned value

{type: "success", zone: "empty"}