Hi All,

I've been trying to write typed racket code with hyper-literate.  The docs 
seem to suggest I can just add typed racket to the #lang hyper-literate;

So my trial code is;

#lang hyper-literate typed/racket

@chunk[<foo>
        
       (: foo : (Integer -> Integer))
       (define (foo n)
         (* 2 n))]

The repl "runs" this code without any complaint, however when I try;

(foo 2)

I get the following error;

Type Checker: missing type for identifier;
 consider adding a type annotation with `:'
  identifier: foo in: foo.

So would someone mind telling me where I am going wrong.

thanks in advance,

greadey


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