javascript hook comparisons

Question

Look at this very basic javascript code:

if (s=='abcd')
{
    if (s2='cdef')
    {
       ...
    }
}

I want to hook all tests: I want to get this:

(s,'==','abcd')
(s2,'==','cdef')

Is there a way to do this ?

I have tried to put hooks into v8 but it is not easy...