Dio Built Value Json Decoder/Transformer for Dart/Flutter

json_decoder.dart

import 'dart:convert';

import 'package:my_app/data_model/serializers.dart';
import 'package:flutter/foundation.dart';

Future<T> decodeJson<T>(String res) async {
  var list = List();
  list.add(res);
  list.add(T);
  //Replace compute with spawning any other isolate, compute is simpler abstraction of isolate api.
  var result = await compute(_decode, list);
  return result;
}

dynamic _decode(List list) {
  var decoded = json.decode(list[0]);
  var matchedDecoder = serializers.serializerForType(list[1]);
  if (matchedDecoder != null) {
    return serializers.deserializeWith(matchedDecoder, decoded);
  } else {
    return null;
  }
}

// Sample usage
/*

Future<User> getUser() async {
  try {
    Response<String> response = await _dio.get("/me");
    var userResponse = await decodeJson<User>(response.data);
    return userResponse;
  } catch (error, stacktrace) {
    print(stacktrace);
    return null;
  }
}
*/