I'm using packaage version 4.0.0-beta.24360.3

if field value is null I can not get its type, although I can get it if read field types.

Is it expected to work like this? should not it return Type of field?
another question. such value is also marked as 'invalid', I mean IsValid == false. Also not really clear why. It is just valid null value

best,
ilya