How to avoid recursive module dependency ?

[kcvinu]

Hi all, I have a recursive module dependency. How to solve this ? Say, i have 
two modules like this. 
    
    
    #module_A.nim
    type
        a_Type* = ref object
            aVar* : b_Type
    
    
    Run

And in another file, 
    
    
    #module_B.nim
    type
        b_Type* = ref object
            bVar* : a_Type
    
    
    Run

How can i avoide recursive module dependency ?