ref: d45d6cb5b1db467f990332c88492e57f687fa316
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
}