Fails to serialize and deserialize private types

[egracer]

type private Person = 
{
    firstName: string
    lastName: string
}

let x = 
{
    firstName = "John"
    lastName = "Doe"
}

Json.serialize x

The above snippet throws an error saying that the type is not a Record. It would be great if the error message could identify that the type is inaccessible, or suggest making sure that the type is publicly scoped.

[Tombert]

This is definitely something we should look into. I believe that we have access to that information upon doing reflection, so I do not believe it will be difficult to add.

[bartelink]

Yes, friendly messages are good. OOTB, Json.net silently omits the fields, which is definitely to be avoided too ;)