In one assembly, define a public static class in C#:
In another do something similar in F#:
which Reflector tells us is equivalent to
ClassLibrary1. Now create another F# library referencing the previous two containing
The first line compiles; the second doesn't, failing with compile error
error FS0039: The type 'Module1' is not defined.
CompilationMapping is being sniffed by the
typeof operation, because that is the only difference between the two.