export type LogLevel = "debug" | "info" | "warn" | "error";
/** Test-only: clear the memoized TTY default so env/TTY probes re-run. */
export declare function __test_resetLoggerCache(): void;
export declare const logger: {
    debug: (message: string, fields?: Record<string, unknown>) => void;
    info: (message: string, fields?: Record<string, unknown>) => void;
    warn: (message: string, fields?: Record<string, unknown>) => void;
    error: (message: string, fields?: Record<string, unknown>) => void;
};