World.Registration: type of bendvy-ecs-core@0.1.0.3
Import: import bendvy-ecs-core@0.1.0.3/world.bend as World
Lines 54-58 of bendvy-ecs-core@0.1.0.3/world.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&start_line=54&end_line=58

import Base

# Metadata-registration result; id allocation is distinct from owning or running
# a system. Exhaustion returns RegistrationRejected without a new registration.
type Registration is Data:
  Registered{id: U32}
  RegistrationRejected{error: WorldError}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&name=WorldError