import type { JSONRPCMessage } from '@modelcontextprotocol/sdk/types.js';
import type { Response } from 'express';
import type { IncomingMessage, ServerResponse } from 'http';
export type CompressionResponse = Response & {
    flush?: () => void;
};
export type TransportType = 'sse' | 'streamableHttp';
export interface McpTransport {
    readonly transportType: TransportType;
    readonly sessionId: string | undefined;
    send(message: JSONRPCMessage): Promise<void>;
    handleRequest(req: IncomingMessage, resp: ServerResponse, body?: unknown): Promise<void>;
    close?(): Promise<void>;
    onclose?: () => void | Promise<void>;
}