js.compile.ignore=true
=====
>>> main.whiley
public export method test():
   {int f} xs = {f:123}
   assert xs == {f:223}
---
E705 main.whiley 3,10:22
E722 main.whiley 3,10:22
=====
>>> main.whiley 3:4
   assert xs{f:=223} == {f:223}
---