smartass.dart

Future<O> _read<I, O>(String key, Map<String, dynamic> defaults, [O Function(I)? map]) async {
  if (I == O) {
    map ??= (value) => value as O;
  } else if (map == null) {
    throw ArgumentError();
  }
  try {
    return switch (I) {
      const (bool) => map(await db.getBoolean(key) as I),
      const (int) => map(await db.getInteger(key) as I),
      const (double) => map(await db.getDouble(key) as I),
      const (String) => map(await db.getString(key) as I),
      _ => map(await db.getJson(key) as I),
    };
  } catch (exception, stacktrace) {
    debugPrint(exception.toString());
    debugPrint(stacktrace.toString());
    return defaults[key];
  }
}