RelationCleanup.children_start: def of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/relation_cleanup.bend as RelationCleanup
Lines 40-42 of bendvy-ecs-core@0.1.0.4/relation_cleanup.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/relation_cleanup.bend&start_line=40&end_line=42

import Base
import entity_key.bend as Key
import relation_types.bend as G
import relation_commands.bend as A
import world.bend as W

def children_start(~S: Data,~C: Type,~R: Type,~E: Data,observed: W.World<S,A.Store<S,C>,R,A.Notice<S,E>> & List<&2,Key.Key>,id:Key.Key,descriptor: G.Descriptor<S>,remaining: List<&2,G.Descriptor<S>>,frames: List<&2,G.CleanupFrame<S>>) -> W.World<S,A.Store<S,C>,R,A.Notice<S,E>> & List<&2,G.CleanupFrame<S>>:
  (world,children) = observed
  (world,G.CleanupChildren{id,descriptor,remaining,children} <> frames)

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/entity_key.bend&name=Key
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/relation_commands.bend&name=Notice
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/relation_commands.bend&name=Store
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/relation_types.bend&name=CleanupFrame
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/relation_types.bend&name=Descriptor
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/world.bend&name=World