import type { AppConfig } from "../config/env.js";
export type LogLevelName = "debug" | "info" | "warn" | "error";
export interface AppLogger {
    debug(message: string, ...args: unknown[]): void;
    info(message: string, ...args: unknown[]): void;
    warn(message: string, ...args: unknown[]): void;
    error(message: string, ...args: unknown[]): void;
    flush(): Promise<void>;
    close(): Promise<void>;
}
export declare function createLogger(config: Pick<AppConfig, "LOG_LEVEL" | "MCP_SERVER_LOG_FILE">): AppLogger;
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