https://twitter.com/aoirint/status/1633175676219166721

1633176562634985472.dart

var tempFileLastLength = 0;
final tempFileSystemEventSubscription = tempFile.watch(events: FileSystemEvent.all).listen((event) {
  tempFile
    .openRead(tempFileLastLength)
    .transform(utf8.decoder)
    .transform(const LineSplitter())
    .forEach((lineText) {
      // TODO: tempFileLastLength += lineTextのデコード前のバイト数
    });
});