Format CPF

main.dart

void main() {
  final String text = '11122233344';
  
  print(maskText(text, 'CPF'));
}

String maskText(String text, String type) {
  // Format CPF.
  if (type == 'CPF') {
    final List<String> chars = text.split('');
    chars.insert(3, '.');
    chars.insert(7, '.');
    chars.insert(11, '-');
    return chars.join('');
  }
  // Other number types.
  else {
    return text;
  } 
}