import { IncomingMessage } from 'http';
/**
 * Extracts credentials from the Authorization header.
 *
 * The Authorization header is formatted as follows:
 * AUTHORIZATION: Basic <Base64 encoded(<Configured ChargingStationId>:<Configured BasicAuthPassword>)>
 *
 * @param {http.IncomingMessage} req - The request object.
 * @returns Extracted credentials.
 */
export declare function extractBasicCredentials(req: IncomingMessage): {
    username?: string;
    password?: string;
};