class MyHomePage extends StatelessWidget {
  final emoji = '👌🏾'; // from MacOS
  final emoji2 = '👋🏾'; // from Twitter
  // final emoji3 = '👌🏾'; // from Twitter throws error: 'Illegal character '55356'.'

  @override
  Widget build(BuildContext context) {
    print('$emoji code Units: ${emoji.codeUnits}  runes: ${emoji.runes}');
    // prints 👌🏾 code Units: [55357, 56396, 55356, 57342]  runes: (128076, 127998)
    print('$emoji2 code Units: ${emoji2.codeUnits}  runes: ${emoji2.runes}');
    // prints 👋🏾 code Units: [55357, 56395, 55356, 57342]  runes: (128075, 127998)

    return Scaffold(
      appBar: AppBar(),
      body: Center(
        child: Text(
          '$emoji \n $emoji2',
          style: TextStyle(fontSize: 24.0),
        ),
      ),
    );
  }
}