Support Dart 2 for Flutter development

It would be great if you could support also the new Dart 2 programming language constructors for Flutter development.

See https://flutter.institute/flutter-with-dart-2 for reference. To use it via the command line, you have to use “flutter run --preview-dart-2”.

The following shows syntax errors in the Dart editor.

import 'package:flutter/material.dart';
import 'package:google_sign_in/google_sign_in.dart';   
import 'dart:async';

class OctalClockApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return  MaterialApp(
      title: 'Octal Clock',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        fontFamily: 'Fixed',
      ),
      debugShowCheckedModeBanner: false,
    
    );
  }
}

[DanTup]

This is merged into v2.9.0. There are still some issues in the SDK (spews errors during launch) which I believe are being worked on but I’ve confirmed no analyzer warnings (so we’re correctly passing the flag to the analyzer) and the app runs (so we’re correctly passing to flutter run).

[devoncarew]

It’ll probably be earliest next week; we’ll follow up on this issue.