serializer example on @jsonObejct

I used serializer on @jsonObejct, but it has error below,

Argument of type '{ serializer: (myClass: MyClass) => any; }' is not assignable to parameter of type 'ParameterlessConstructor<{}>'.
  Object literal may only specify known properties, and 'serializer' does not exist in type 'ParameterlessConstructor<{}>'.ts(2345)

My codes like

@jsonObject({
  serializer: MyClass.toJson // error spot
})
export class MyClass extends BaseEntity {
  static toJson(myClass: MyClass): any {
    //serialization from MyClass to json.
  }
 :
}

Anyone give me some example using serializer on @jsonObejct? Or any idea?

[Neos3452]

You could have something like this. I’ve also added a test for that. So, you can take a look in the repository.

    @jsonObject
    class Inner {
        @jsonMember
        prop: string;

        shouldSerialize: boolean;
    }

    function objArraySerializer(values: Inner[]) {
        return TypedJSON.toPlainArray(
            values.filter(value => value.shouldSerialize),
            Inner,
        );
    }

    @jsonObject
    class Obj {
        @jsonArrayMember(Inner, { serializer: objArraySerializer })
        inners: Inner[];

        @jsonMember
        str: string;
    }

[pyunghwa]

I found it out. Instead of “null”, you can use “undefined”.

@jsonObject
class Obj {
    @jsonMember({ serializer: value => undefined })
    str: string;
}

The result of serializing this code is blank { }.