ExecutionTrace.Subscriber: type of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/execution_trace.bend as ExecutionTrace
Lines 42-45 of bendvy-ecs-core@0.1.0.4/execution_trace.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/execution_trace.bend&start_line=42&end_line=45

import Base

# Each subscription is its actual affine state owner, not a copied callback.
# The erased reusable step is supplied as a top-level definition.
type Subscriber<State:Type,Error:Data,-step:State -> TraceEvent<Error> -> State> is Type:
  Subscriber{state:State}

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/execution_trace.bend&name=TraceEvent