import * as http from 'http';
export interface ProxyServer extends http.Server {
    authenticate?: (req: http.IncomingMessage) => boolean | Promise<boolean>;
    localAddress?: string;
}
/**
 * Sets up an `http.Server` or `https.Server` instance with the necessary
 * "request" and "connect" event listeners in order to make the server act
 * as an HTTP proxy.
 */
export declare function createProxy(server?: http.Server): ProxyServer;
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