import 'dart:typed_data'; import "package:json_annotation/json_annotation.dart"; class Uint8ListConverter implements JsonConverter> { const Uint8ListConverter(); @override Uint8List fromJson(List? json) { return json == null ? Uint8List(0) : Uint8List.fromList(json); } @override List toJson(Uint8List object) { return object.toList(); } }