dart list files in directory
Future<List<FileSystemEntity>> dirContents(Directory dir) {
var files = <FileSystemEntity>[];
var completer = Completer<List<FileSystemEntity>>();
var lister = dir.list(recursive: false);
lister.listen (
(file) => files.add(file),
// should also register onError
onDone: () => completer.complete(files)
);
return completer.future;
}
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