import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
export interface Logger {
    debug: (message: string, data?: unknown) => void;
    info: (message: string, data?: unknown) => void;
    warn: (message: string, data?: unknown) => void;
    error: (message: string, data?: unknown) => void;
}
export declare const logger: Logger;
export declare function attachLogger(server: McpServer): Logger;