export declare class MdsDarajaSdk {
    private consumerKey;
    private consumerSecret;
    private baseUrl;
    constructor(consumerKey: string, consumerSecret: string, sandbox?: boolean);
    private getAccessToken;
    initiateStkPush(businessShortCode: string, password: string, timestamp: string, phoneNumber: string, amount: number, callbackUrl: string): Promise<any>;
    reverseTransaction(shortCode: string, password: string, transactionID: string): Promise<any>;
    initiateB2cPayment(shortCode: string, password: string, phoneNumber: string, amount: number): Promise<any>;
    static generatePassword(businessShortCode: string, passkey: string): string;
    static generateTimeStamp(): string;
}