This is a continuation of Checkout tips where I started sharing tips about Magento 2 Checkout module.
In this article I will go through validators used for payment method forms in Magento 2 and show how to create new custom validator.
New Magento 2.1.3 and Magento 2.0.11 releases include payment enhancements and improvements. Changes affect Paypal, Braintree and Authorize.Net payment modules in Magento Community Edition. In this article I review changes in the
Magento\Payment module. Also, I will answer question about backward compatibility for custom payment integrations.