app/code/Magento/Checkout/Block/Cart/Sidebar.php

app/code/Magento/Checkout/Controller/Onepage/Index.php

app/code/Magento/Checkout/CustomerData/Cart.php

...nto/Checkout/view/frontend/layout/checkout_cart_index.xml

app/code/Magento/Checkout/view/frontend/layout/default.xml

...ento/Checkout/view/frontend/templates/cart/minicart.phtml

...gento/Checkout/view/frontend/templates/onepage/link.phtml

...t/view/frontend/web/js/model/cart/authentication-popup.js

app/code/Magento/Checkout/view/frontend/web/js/sidebar.js

...ento/Checkout/view/frontend/web/js/view/authentication.js

...nto/Checkout/view/frontend/web/js/view/billing-address.js

...Checkout/view/frontend/web/js/view/cart/authentication.js

...o/Checkout/view/frontend/web/template/authentication.html

...kout/view/frontend/web/template/billing-address/form.html

...ckout/view/frontend/web/template/cart/authentication.html

...Checkout/view/frontend/web/template/minicart/content.html

...ode/Magento/Customer/view/frontend/web/js/action/login.js

...d/web/js/model/credit-card-validation/credit-card-data.js

...el/credit-card-validation/credit-card-number-validator.js

...lidation/credit-card-number-validator/credit-card-type.js