original.name="UnionType_Invalid_10"
js.execute.ignore=true
======
>>> main.whiley
type nat is (int n) where n >= 0
type natlist is nat[]
type nlt is nat | natlist
function g(int y) -> nlt:
return (nlt) y
public export method test():
g(0)
g(-1)
---
E702 main.whiley 7,11:17
E717 main.whiley 7,4:17