/**
 * Returns a set of interruptors, fibers that interrupted the fiber described
 * by this `Cause`.
 *
 * @tsplus getter effect/core/io/Cause interruptors
 */
export function interruptors<E>(self: Cause<E>): HashSet<FiberId> {
  return self.foldLeft(
    HashSet.empty<FiberId>(),
    (acc, curr) => curr.isInterruptType() ? Maybe.some(acc.add(curr.fiberId)) : Maybe.some(acc)
  )
}