I have a requirement where a user should enter date in "MM/DD/YYYY" if available or else should be able to enter "NA" in the input field. Here is the stackblitz link where I am trying to achieve this functionality.
[Formatter not Validation Regex]
Note: User should be able to enter numbers or only N and A in NA sequence in the input field. Date validation is not required but the formatted numbers should be in this way ../../…. OR NA.