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isValidSSN variable

Conditions for valid SSN from the original 1010ez pdf form: ‘123456789’ is not a valid SSN A value where the first 3 digits are 0 is not a valid SSN A value where the 4th and 5th digits are 0 is not a valid SSN A value where the last 4 digits are 0 is not a valid SSN A value with 3 digits, an optional -, 2 digits, an optional -, and 4 digits is a valid SSN 9 of the same digits (e.g., ‘111111111’) is not a valid SSN

Signature:

isValidSSN: <T>(ssnString: T, props: FieldProps<T>) => ValidationFunctionResult<T>