import 'package:freezed_annotation/freezed_annotation.dart'; part 'websocket.freezed.dart'; part 'websocket.g.dart'; @freezed class WebSocketPackage with _$WebSocketPackage { const factory WebSocketPackage({ @JsonKey(name: 'w') @Default('unknown') String method, @JsonKey(name: 'e') String? endpoint, @JsonKey(name: 'm') String? message, @JsonKey(name: 'p') @Default({}) Map? payload, }) = _WebSocketPackage; factory WebSocketPackage.fromJson(Map json) => _$WebSocketPackageFromJson(json); }