import { Voucher } from '../lib/Voucher';
import { Configuration } from '../interfaces/configuration.interface';
export declare class VoucherSpService {
    private static _instance;
    private static _apiEndPoint;
    private _vouchers;
    constructor();
    static getInstance(apiEndPoint: string): VoucherSpService;
    setVoucherCode(couponCode: string, configuration: Configuration): Voucher;
    getVoucherInstance(couponCode: string): Voucher;
    getSlugName(serviceProviderkey: string, email: string): Promise<any>;
    getServiceProviderKey(email: string): Promise<any>;
}