import { Base } from './base';
import { MembershipInvoiceResponse, MembershipSingleInvoiceResponse } from './types/invoice';
export declare enum InvoiceStatus {
    Posted = "Posted",
    Draft = "Draft",
    Cancelled = "Cancelled"
}
export declare enum BalanceType {
    Outstanding = "Outstanding",
    Paid = "Paid",
    NonZero = "NonZero",
    Refunded = "Refunded",
    Negative = "Negative"
}
export declare class Invoice extends Base {
    private membershipApi;
    private invoiceApiKey;
    getInvoicesBySubscriptionNumber(number: string, sessionToken: string, status?: string): Promise<MembershipInvoiceResponse>;
    getInvoicesByBalance(number: string, sessionToken: string, balance: BalanceType): Promise<MembershipInvoiceResponse>;
    getInvoiceById(invoiceId: string, sessionToken: string): Promise<MembershipSingleInvoiceResponse>;
    download(invoiceId: string, sessionToken: string): Promise<any>;
}