finlabsindia/wp-content/plugins/ninja-forms/includes/Fields/CreditCardExpiration.php

<?php if ( ! defined( 'ABSPATH' ) ) exit;

/**
 * Class NF_Fields_CreditCardExpiration
 */
class NF_Fields_CreditCardExpiration extends NF_Abstracts_Input
{
    protected $_name = 'creditcardexpiration';
    protected $_type = 'creditcardexpiration';

    protected $_section = '';

    protected $_icon = 'credit-card';

    protected $_templates = 'textbox';

    protected $_test_value = '01/2025';

    protected $_settings_exclude = array( 'input_limit_set', 'disable_input' );


    public function __construct()
    {
        parent::__construct();

        $this->_nicename = __( 'Credit Card Expiration', 'ninja-forms' );

        add_filter( 'nf_sub_hidden_field_types', array( $this, 'hide_field_type' ) );
        
        $this->_settings[ 'mask' ] = array(
            'name' => 'mask',
            'value' => '99/9999',
        );
        
    }

    function hide_field_type( $field_types )
    {
        $field_types[] = $this->_name;

        return $field_types;
    }
}