Error.err_val: def of bendonnect-rpc@0.1.0.0
Import: import bendonnect-rpc@0.1.0.0/src/error.bend as Error
Lines 448-454 of bendonnect-rpc@0.1.0.0/src/error.bend: https://jend.leeeet.dev/read.txt?path=bendonnect-rpc@0.1.0.0/src/error.bend&start_line=448&end_line=454

import Base

# absent error is fine (Some None); present-but-invalid error is None.
def err_val(m: Maybe<&1, Error>) -> Maybe<&1, Maybe<&1, Error>>:
  match m:
    case None{}:
      None{}
    case Some{e}:
      Some{Some{e}}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bendonnect-rpc@0.1.0.0/src/error.bend&name=Error