def first_err
import cswap-bend-cli@0.1.0.0/args.bend as Argsimport Base
154def first_err(msgs: List<&2, String>) -> String:
155 match msgs:
156 case Nil{}:
157 ""
158 case Con{+h, t}:
159 first.pick(String.is_empty(h), first_err(t), h)