json - 如何在冻结的 lib 中为 dart/flutter 纠正 toJson 转换器

Question

尝试转换时，Profile 类未正确转换。作为 toString() 函数的结果退出。

个人飞镖

import 'package:adminapp/domains/Test/Profile.dart';
import 'package:freezed_annotation/freezed_annotation.dart';

part 'Person.freezed.dart';
part 'Person.g.dart';

@freezed
class Person with _$Person {
  factory Person({
    String? id,
    Profile? profile,
  }) = _Person;

  factory Person.fromJson(Map<String, dynamic> json) => _$PersonFromJson(json);
}

个人资料.dart

import 'package:freezed_annotation/freezed_annotation.dart';

part 'Profile.freezed.dart';
part 'Profile.g.dart';

@freezed
class Profile with _$Profile {
  factory Profile({
    DateTime? bDay,
    String? hob,
    String? rel,
  }) = _Profile;

  factory Profile.fromJson(Map<String, dynamic> json) =>
      _$ProfileFromJson(json);
}

主要.dart

import 'package:adminapp/domains/Test/Person.dart';
import 'package:adminapp/domains/Test/Profile.dart';

void main(List<String> args) {
  Person p = Person(
      id: '4',
      profile: Profile(
        bDay: DateTime.now(),
        hob: "123",
        rel: 'asd',
      ));
  print(p.toJson());
}

输出：

{id: 4, profile: Profile(bDay: 2021-07-28 08:42:51.708857, hob: 123, rel: asd)}

但它不是json格式！配置文件类转换不正确！而且我不能把它保存到firestore！