creditCard property

List<TextInputFormatter> get creditCard

For credit card numbers (digits with spaces every 4 characters)

Implementation

static List<TextInputFormatter> get creditCard => <TextInputFormatter>[
  ...denyEmojis,
  FilteringTextInputFormatter.digitsOnly,
  LengthLimitingTextInputFormatter(19), // 16 digits + 3 spaces
  CreditCardFormatter(),
];