EventPublication.Publication: type of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/event_publication.bend as EventPublication
Lines 8-11 of bendvy-ecs-core@0.1.0.4/event_publication.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/event_publication.bend&start_line=8&end_line=11

import Base
import transaction.bend as Tx

# Each ordinary emit stages one singleton product record. Tx.finish preserves
# the record list's emission order; products are never merged across emissions.
type Publication<A:Data,B:Data> is Data:
  Publication{first:List<&2,A>,second:List<&2,B>}

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List