Not as advertised

The documentation states that it validates phone numbers. However, this is not true. I have spent hours trying to determine where the phoneUS class is located and have not been able to find it. It states in the documentation online that support for the phoneUS class can be found in additional-methods.js but it is nowhere to be found. It’s nice that the developer includes credit cards but phone numbers are much more common in a contact form than credit cards and they are completely overlooked. After wasting many hours I am just going to forget validating phone numbers.