I have a json file like this: ```{ "array": ["...

# serialization

[Patrick]

I have a json file like this:

{
  "array": [
    "foo",
    1,
    2
  ]
}

Now this is apparently not valid JSON, since I need to turn on isLenient = true in the JSON configuration.
If I turn it on, calling json.stringify() on an object of class List<Any> is not a problem, I will get back the correct result.
When I try to parse this JSON though, I get back this error message:

Uncaught Kotlin exception: kotlinx.serialization.SerializationException: Can't locate argument-less serializer for class Any. For generic classes, such as lists, please provide serializer explicitly.

Now I tried to write a custom serializer but I got stuck. First question: Does this error message mean I need to only provide a serializer for class Any or also for class List ? I interpreted this as only needing a serializer for Any , so I created a custom serializer like this:

@Serializer(forClass = Any::class)
object AnySerializer {
    override fun deserialize(decoder: Decoder): Any {
        return decoder.decodeString()
    }
}

and annotated the class with List<@Serializable(with = AnySerializer::class) Any>
Then I get this error message:

e: Compilation failed: Please provide implementation of .deserialize method for external class

What did I do wrong?