woocommerce/assets/js/frontend/credit-card-form.min.js

jQuery(function(r){r(".wc-credit-card-form-card-number").payment("formatCardNumber"),r(".wc-credit-card-form-card-expiry").payment("formatCardExpiry"),r(".wc-credit-card-form-card-cvc").payment("formatCardCVC"),r(document.body).on("updated_checkout wc-credit-card-form-init",function(){r(".wc-credit-card-form-card-number").payment("formatCardNumber"),r(".wc-credit-card-form-card-expiry").payment("formatCardExpiry"),r(".wc-credit-card-form-card-cvc").payment("formatCardCVC")}).trigger("wc-credit-card-form-init")});