export declare type PerxInvoiceItemType = 'Reward::Transaction' | 'StoredValue::Transaction';
export declare class PerxBaseInvoiceItem {
    itemId: number;
    itemType: PerxInvoiceItemType;
}
export declare class PerxInvoiceItem extends PerxBaseInvoiceItem {
    id: number;
}
export declare class PerxInvoice {
    id: number;
    description: string | null;
    invoiceItems: PerxInvoiceItem[];
}