The default checkout dictionary file (i18n/en_US.json) contains the default values for all labels and text common to the checkout drop-in component.
i18n/en_US.json
{ Checkout: { title: Checkout, LoginForm: { title: Contact details, account: Already have an account?, ariaLabel: Email, invalidEmailError: Please enter a valid email address., missingEmailError: Enter an email address., emailExists: { alreadyHaveAccount: It looks like you already have an account., signInButton: Sign in, forFasterCheckout: for a faster checkout. }, floatingLabel: Email *, placeholder: Enter your email address, signIn: Sign In, switch: Do you want to switch account?, signOut: Sign Out }, ShippingMethods: { title: Shipping options, emptyState: This order can't be shipped to the address provided. Please review the address details you entered and make sure they're correct. }, BillToShippingAddress: { title: Bill to shipping address }, PaymentMethods: { title: Payment, emptyState: No payment methods available }, OutOfStock: { title: Your cart contains items that are out of stock, message: The following items are out of stock:, actions: { reviewCart: Review cart, removeOutOfStock: Remove out of stock items }, lowInventory: { one: Last item!, many: Only {{count}} left! }, alert: Out of stock! }, PlaceOrder: { button: Place Order }, ServerError: { title: We were unable to process your order, contactSupport: If you continue to have issues, please contact support., unexpected: An unexpected error occurred while processing your order. Please try again later., button: Try again }, EmptyCart: { title: Your cart is empty, button: Start shopping }, ErrorBanner: { genericMessage: Server error detected. Please check your connection and try again. }, MergedCartBanner: { items: { one: 1 item from a previous session was added to your cart. Please review your new subtotal., many: {{count}} items from a previous session were added to your cart. Please review your new subtotal. } }, EstimateShipping: { estimated: Estimated Shipping, freeShipping: Free, label: Shipping, taxToBeDetermined: TBD, withTaxes: Including taxes, withoutTaxes: Excluding taxes } }}