import type { HttpRequest, HttpResponse } from 'uWebSockets.js';
import { HandlerOptions as RawHandlerOptions, OperationContext } from '../handler';
/**
 * The context in the request for the handler.
 *
 * @category Server/uWebSockets
 */
export interface RequestContext {
    res: HttpResponse;
}
/**
 * Handler options when using the http adapter.
 *
 * @category Server/uWebSockets
 */
export type HandlerOptions<Context extends OperationContext = undefined> = RawHandlerOptions<HttpRequest, RequestContext, Context>;
/**
 * Create a GraphQL over HTTP spec compliant request handler for
 * the Node environment [uWebSockets.js module](https://github.com/uNetworking/uWebSockets.js/).
 *
 * ```js
 * import uWS from 'uWebSockets.js'; // yarn add uWebSockets.js@uNetworking/uWebSockets.js#<version>
 * import { createHandler } from 'graphql-http/lib/use/uWebSockets';
 * import { schema } from './my-graphql-schema';
 *
 * uWS
 *   .App()
 *   .any('/graphql', createHandler({ schema }))
 *   .listen(4000, () => {
 *     console.log('Listening to port 4000');
 *   });
 * ```
 *
 * @category Server/uWebSockets
 */
export declare function createHandler<Context extends OperationContext = undefined>(options: HandlerOptions<Context>): (res: HttpResponse, req: HttpRequest) => Promise<void>;