Function userSelectedPaymentMethodReducer

Parameters

• state: null | PaymentMethod = null
• action:
      | CommonAction
      | PayloadAction<"START_TRANSACTION", { externalID: string; total: number }>
      | PayloadAction<"CANCEL_TRANSACTION", { reason: CancelReason }>
      | EmptyAction<"COMPLETE_TRANSACTION">
      | PayloadAction<"MONEY_CHANGED_HANDS", AccountingEvent>
      | PayloadAction<"USER_SELECTED_PAYMENT_METHOD", (PaymentMethod | null)>
      | PayloadAction<"REFUND_OWED", { amount: number }>
      | PayloadAction<"REFUND_ISSUED", { amount: number }>
      | EmptyAction<"CLEAR_TRANSACTION">