validateUpiId static method

String? validateUpiId({
  1. @required String? upiId,
})

Implementation

static String? validateUpiId({@required String? upiId}) {
  final RegExp regex = RegExp(validUpiIdPattern.toString());
  if (upiId!.isEmpty) {
    return StringConstants.upi_empty_msg;
  } else if (!regex.hasMatch(upiId)) {
    return StringConstants.valid_upi_msg;
  }
  return null;
}