I am trying to find out how to validate a age or a date on yup on react native without using the moment.js lib additionally.

This is the date I get from the Date Picker iOS in a local date string: .... const birthdate = (date: Date) => date.toLocaleDateString(); ....

Here is where I need your help:

'''return yup.object().shape({ birthday: yup.date() //then i dont know what to do'''