import * as express from 'express';
import { ITokenTtransformationMiddlewareConfig } from '../config/tokenTransformationMiddlewareConfig';
/**
 * Token transformation Middleware. It will generate extended jwt
 * in exchange for an access token.
 *
 * @param {boolean} config Configuration of the middleware.
 */
export declare const tokenTransformationMiddleware: (config?: ITokenTtransformationMiddlewareConfig) => (req: express.Request, res: express.Response, next: express.NextFunction) => void;
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