I am deserializing a map with name/value pairs where the values can have any value-type. So no class with members of a defined type can be given to deserialize into.

I can deserialize into a Map<String,Object> (the only solution), but then all numbers are deserialized into doubles. The underlying problem is that integers are wrongly convertet to doubles.

A simple call to

moshi.adapter(Object.class).fromJson("1234")

demonstrates this. Here a double is returned, whereas the argument describes an integer.