isValidNationalInsuranceNumber method

AbstractRuleBuilder isValidNationalInsuranceNumber({
  1. String? message,
})

Checks the object is a String and is a valid UK national insurance number

Implementation

AbstractRuleBuilder isValidNationalInsuranceNumber({String? message}) {
  return must((dynamic dyn) => dyn is String && CommonRegex.ninValidator.hasMatch(dyn), message ?? "String must be a valid national insurance number", code: "notValidNationalInsuranceNumber");
}