`streamGroup.stream.toList()` never return

[stephane-archer]

import 'dart:io';

import 'package:async/async.dart';

Future<void> main(List<String> arguments) async {
  List<Directory> ld = [Directory('lib')];
  var streamGroup = StreamGroup<FileSystemEntity>();
  for (var dir in ld) {
    var steam = dir.list();
    streamGroup.add(steam);
  }
  var fileList = await streamGroup.stream.toList();
  print(fileList);
}

await streamGroup.stream.toList(); never return

[lrhn]

Writing the class docs:

stream won't close until close is called on the group and every stream in the group closes

The toList waits for the stream to close, which it doesn't. Call streamGroup.ckose() after the loop, when you know you won't add more streams.