Invalid code generated for `checked: true` when `json_annotation` is imported with a prefix

[jjoelson]

I encountered some incorrect code generation when setting checked: true and importing json_annotation with a prefix:

import 'package:json_annotation/json_annotation.dart' as _i1;

part 'my_class.g.dart';

@_i1.JsonSerializable(checked: true)
class MyClass {
  final String field1;
  final String field2;

  MyClass({
    required this.field1,
    required this.field2,
  });

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

The generated code attempts to use the unqualified $checkedCreate instead of _i1.$checkedCreate:

// GENERATED CODE - DO NOT MODIFY BY HAND

part of 'my_class.dart';

// **************************************************************************
// JsonSerializableGenerator
// **************************************************************************

MyClass _$MyClassFromJson(Map<String, dynamic> json) => $checkedCreate(
      'MyClass',
      json,
      ($checkedConvert) {
        final val = MyClass(
          field1: $checkedConvert('field1', (v) => v as String),
          field2: $checkedConvert('field2', (v) => v as String),
        );
        return val;
      },
    );

Map<String, dynamic> _$MyClassToJson(MyClass instance) => <String, dynamic>{
      'field1': instance.field1,
      'field2': instance.field2,
    };

This results in an error in the generated code:

The function '$checkedCreate' isn't defined.

[kevmoo]

This is "known". It's just work to implement. Not super high on my list. PRs welcome!