Redirect Woocommerce login to refferer page

wc-login-redirect.php

<?php 
/*
 * Author: Andrij Tkachenko https://www.upwork.com/fl/andrijtkachenko
 *
 */
class Custom_Redirect{

    public function __construct()
    {
        add_action('woocommerce_login_form_end', array($this, 'add_redirect_field'));
        add_action('woocommerce_register_form_end', array($this, 'add_redirect_field'));
        add_filter('woocommerce_login_redirect', array($this, 'login_redirect'), 10 ,2);
        add_filter('woocommerce_registration_redirect', array($this, 'login_redirect'), 10 ,1);
    }

    public function add_redirect_field(){
        $redirect = '';

        if(!empty($_SERVER['HTTP_REFERER'])) $redirect = $_SERVER['HTTP_REFERER'];
        echo '<input type="hidden" name="redirect" value="'.$redirect.'">';

        if(is_checkout()){
            echo '<input type="hidden" name="is_checkout" value="1">';
        }
    }

    public function login_redirect($redirect, $user = false){

        if(isset($_POST['is_checkout']) && ($_POST['is_checkout'] === '1')){
            return get_permalink(wc_get_page_id( 'checkout' ));
        }

        if(isset($_POST['redirect']) && !empty($_POST['redirect'])){
            return $_POST['redirect'];
        } else {
            return home_url('');
        }
    }

}

$run = new Custom_Redirect();