Feature.Composition: type of bendvy-ecs-core@0.1.0.3
Import: import bendvy-ecs-core@0.1.0.3/feature.bend as Feature
Lines 30-34 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=30&end_line=34

import Base

# Validated composition outcome. Built owns build output; Rejected returns
# the original affine Owners with the validation error for recovery or retry.
type Composition<S:Data,Owners:Type,Output:Type> is Type:
  Built{output:Output}
  Rejected{error:Error,owners:Owners}

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/feature.bend&name=Error