OrdinaryCheckDeclaration.required_join: def of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/ordinary_check_declaration.bend as OrdinaryCheckDeclaration
Lines 61-63 of bendvy-ecs-core@0.1.0.4/ordinary_check_declaration.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/ordinary_check_declaration.bend&start_line=61&end_line=63

import Base
import bendvy-ecs-core@0.1.0.4/world.bend as W

def required_join(~S:Data,~C:Type,~R:Type,~E:Data,before:List<&2,String>,observed:W.World<S,C,R,E> & List<&2,String>) -> W.World<S,C,R,E> & List<&2,String>:
  match observed:
    case (world,after):(world,List.append(&2,String,before,after))

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.append
  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=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/world.bend&name=World