what s people s thoughts on model code

const refund = Effect.serviceWith(Ship, Ship =>
  (item: PickItem) =>
    Do($ => {
      const it = $(
        (item.isLabelCreated() || item.isPrinted()
          ? Maybe.some(item)
          : Maybe.none)
          .encaseInEffect(() => new InvalidStateError("Item cannot be refunded"))
      )
      $(Ship.refund(it.state.transactionId))
      return it.props.state.set(new Refunded({}))
    }))

const refund = Effect.serviceWith(Ship, Ship =>
  (item: PickItem) =>
    Do($ => {
      const it = $(item.asRefundable)
      $(Ship.refund(it.state.transactionId))
      return it.transitionToRefunded
    }))