def main_join
import bendvy-ecs-core@0.1.0.4/query.bend as Queryimport Base
import world.bend as W
import component.bend as Cmp
import transaction.bend as T
44def main_join(~S: Data,~Store: Type,~R: Type,~E: Data,~V: Data,observed: T.Tx<W.World<S,Store,R,E>,E> & Cmp.Access<V>) -> T.Tx<W.World<S,Store,R,E>,E> & Bool:
45 (tx,value) = observed
46 (tx,main_found(~V,value))