def ce.norm
import bend-kit-http@0.38.2.0/http.bend as Httpimport Base
4020def ce.norm(xs: List<&2, String>) -> List<&2, String>:
4021 match xs:
4022 case Nil{}:
4023 Nil{}
4024 case Con{v, t}:
4025 ce.keep(String.to_lower(trim(v)), ce.norm(t))