ref: c1c9aa0540f6b036e12d6a4bd786c8e63ec6d475
dir: /test/occur.myr/
use std
/* checks that f is not an infinite type (ie, the type
doesn't exist within itself). If 'f' typechecked,
it's type would be:
f : (-> (-> (-> ... ad infinitum ...)))
*/
const f = {
-> f
}