Interface EventListenerObject<E, M>

Both the Task and Bench objects extend the EventTarget object. So you can attach a listeners to different types of events to each class instance using the universal addEventListener and removeEventListener methods.

interface EventListenerObject<
    E extends BenchEvents,
    M extends "bench" | "task" = "bench",
> {
    handleEvent(evt: BenchEvent<E, M>): void;
}