Function runSequential

packages/effect/src/internal/effect.ts:4703–4721

(
    state: S,
    items: ReadonlyArray<A>,
    index: number,
    end: number
  )

  const step = options.step

  const runSequential = (
    state: S,
    items: ReadonlyArray<A>,
    index: number,
    end: number
  ): Effect.Effect<void, E | E2, R> | undefined => {
    for (; index < end; index++) {
      const item = items[index]
      const effect = onItem(state, item, index)
      if (!effectIsExit(effect)) {
        return flatMap(
          exit(effect),
          (itemExit) => step(state, item, itemExit, index) ?? runSequential(state, items, index + 1, end) ?? void_
        )
      }
      const terminal = step(state, item, effect, index)
      if (terminal) return terminal._tag === "Failure" ? terminal : undefined
    }
  }

  return (
    state: S,