IReadOnlyDictionary is treated as array-like

[SebastianStehle]

I am not sure yet, if this is a bug. I have a custom IReadOnlyDictionary that gets treated as array like. Therefore it will also be serialized as array when I use toJSON.

I think the culprit is here:

jint/Jint/Runtime/Interop/TypeDescriptor.cs

Line 166 in 768b442

isDictionary = typeof(IDictionary).IsAssignableFrom(type);

Is there something I can do to prevent that?

[lahma]

Yes, I think the checks are missing for read only dictionary. It should probably follow same check paths which are using field:

private static readonly Type _genericDictionaryType = typeof(IDictionary<,>);

A PR with test coverage would be most welcome!