json

import 'package:json_annotation/json_annotation.dart';

part '$NAME$.g.dart';

@JsonSerializable(explicitToJson: true)
class $CAP_NAME$ {
  $END$
  
  $CAP_NAME$();
  
  factory $CAP_NAME$.fromJson(Map<String, dynamic> json) => _$$$CAP_NAME$FromJson(json);
  
  Map<String, dynamic> toJson() => _$$$CAP_NAME$ToJson(this);
}

dataclass

import 'package:freezed_annotation/freezed_annotation.dart';

part '$NAME$.freezed.dart';

part '$NAME$.g.dart';

@freezed
class $CAP_NAME$ with _$$$CAP_NAME$ {
  const factory $CAP_NAME$({
    $END$
  }) = _$CAP_NAME$;
  
  factory $CAP_NAME$.fromJson(Map<String, Object?> json) => _$$$CAP_NAME$FromJson(json); 
}

sealedclass

Dart 3.0 이후

<aside> 💡 Dart 3.0 이후 Dart 의 sealed 키워드를 활용한 공식 문법을 사용한다면 아래와 같다. 하지만 코드가 여전히 많다. 그냥 아래의 freezed 활용하는 것을 추천

</aside>

sealed class $Result$<T> {
  const factory $Result$.success(T data) = Success;  // Option

  const factory $Result$.error(String e) = Error;  // Option
}

class Success<T> implements $Result$<T> {
  final T data;

  const Success(this.data);
}

class Error<T> implements $Result$<T> {
  final String e;

  const Error(this.e);
}

Dart 3.0 이후 (Freezed)

import 'package:freezed_annotation/freezed_annotation.dart';

part '$NAME$.freezed.dart';

@freezed
sealed class $CAP_NAME$<T> with _$$$CAP_NAME$<T> {
  const factory $CAP_NAME$.success(T data) = Success;
  const factory $CAP_NAME$.error(String e) = Error;
}

when

Dart 3 이후의 sealed class 와 함께 사용

switch ($condition$) {
  case Success(:final data):
    $cursor1$
  case Error(:final e):
    $cursor2$
}

scaffold