[web] Can't run a Flutter web app when there are async operations before runApp/runZoned #50977
Description
Steps to Reproduce
This code does not work (leaves a white empty screen on the browser, and there are no errors reported or anything):
Future<void> main() => runMyApp();
Future<void> runMyApp() async {
final authenticationRepository = await AuthenticationRepository.create();
await runZoned(
() async => runApp(
MaterialApp(home: Text('hey 2')),
),
);
}However, this code works:
Future<void> main() => runMyApp();
Future<void> runMyApp() async {
await runZoned(
() async => runApp(
MaterialApp(home: Text('hey 2')),
),
);
}Flutter doctor:
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, v1.14.6, on Mac OS X 10.15.3 19D76, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.3.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 3.6)
[✓] VS Code (version 1.42.1)
[✓] Connected device (3 available)
• No issues found!