The customer object is never used.
See also:
- How to get the customer’s data on the frontend checkout page’s client side (with JavaScript) using the «
Magento_Customer/js/model/customer» object? - How to get the customer’s data on the frontend checkout page’s client side (with JavaScript)?
-
frontend-checkout-customer-data- tagged articles. -
The difference between
window.customerData,Magento_Customer/js/customer-data, andMagento_Customer/js/model/customeron a frontend checkout page.