import { HandlerOptions } from 'graphql-sse';
import { RequestContext } from 'graphql-sse/lib/use/fetch';
import { Plugin, YogaInitialContext } from 'graphql-yoga';
export interface GraphQLSSEPluginOptions extends Omit<HandlerOptions<Request, RequestContext, any>, 'validate' | 'execute' | 'subscribe' | 'schema' | 'onSubscribe'> {
    /**
     * Endpoint location where GraphQL over SSE will be served.
     *
     * @default '/graphql/stream'
     */
    endpoint?: string;
}
/**
 * Get [GraphQL over Server-Sent Events Protocol](https://github.com/enisdenjo/graphql-sse/blob/master/PROTOCOL.md) integration with GraphQL Yoga by simply installing this plugin!
 *
 * Note that the endpoint defaults to `/graphql/stream`, this is where your [graphql-sse](https://github.com/enisdenjo/graphql-sse) client should connect.
 */
export declare function useGraphQLSSE(options?: GraphQLSSEPluginOptions): Plugin<YogaInitialContext>;