Should avoid `@Serializer` in companion objects?

# serialization

[Javier]

Should avoid @Serializer in companion objects?

[Javier]

This let me avoiding to add to the serialization module the class and it works out of the box, but docs says

You cannot define your own function serializer() on a companion object of a serializable class

But I don't know if it is only about override that function

[Javier]

Well I found an example in some tests, I don't know if there was an example about this previously when I created similar classes some months ago

https://github.com/Kotlin/kotlinx.serialization/blob/e2e764a132c8eebd31208120774baf9a71ec23c7/formats/json/jvmTest/src/kotlinx/serialization/features/SerializerByTypeTest.kt

[Dominaezzz]

I tend to use object instead of companion object .

[basher]

By doing it on the companion object like you did there, it becomes the default serializer for that class. If that's the the behavior you want, then that looks good!

[Javier]

@Dominaezzz in that way you have to add the serializer to the SerializationModule or explicit it in Serializable

[Dominaezzz]

Yeah, I like to be explicit with this sorta thing.