Feature.first_error: def of bendvy-ecs-core@0.1.0.3
Import: import bendvy-ecs-core@0.1.0.3/feature.bend as Feature
Lines 154-157 of bendvy-ecs-core@0.1.0.3/feature.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.3/feature.bend&start_line=154&end_line=157

import Base

def first_error(first:Maybe<&2,AssemblyError>,second:Maybe<&2,AssemblyError>) -> Maybe<&2,AssemblyError>:
  match first:
    case Some{error}:Some{error}
    case None{}:second

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/feature.bend&name=AssemblyError