import http from 'http';
/**
 * Create an HTTP request listener based on the supplied function.
 *
 * - The request body is JSON parsed and passed into the function as parameters.
 * - The function's return value is JSON stringified into the response body.
 */
export declare const createRequestListenerFromFunction: (fn: (...args: unknown[]) => Promise<unknown>) => http.RequestListener;
/**
 * Create a HTTP server based on the supplied `http.RequestListener`.
 *
 * This function resolves when the server is closed.
 */
export declare const serveRequestListener: (requestListener: http.RequestListener, port?: number) => Promise<void>;