original.name="TypeEquals_Invalid_1"
======
>>> main.whiley
type expr is int[] | int

method f(expr e) :
    if e is int[]:
        debug ("GOT [INT]")
    else:
        if e is int:
            debug ("GOT INT")
        else:
            debug ("GOT SOMETHING ELSE?")

---
E506 main.whiley 7,11:18