import "source-map-support/register";
import type { Request, Response, NextFunction } from "express";
export interface Origin {
    file?: string;
    func?: string;
}
export interface LoggerOptions {
    logFile: string;
    maskFields?: string[];
    captureBody?: boolean;
    trackQuery?: boolean;
    onlyLogOnError?: boolean;
    maxBodySize?: number;
    trackUser?: (req: Request) => string;
    trackOrigin?: boolean;
    onLog?: (logEntry: LogEntry) => void;
    enableGeoIP?: boolean;
    slowThresholdMs?: number;
    trackSlow?: boolean;
    requestIdHeader?: string;
    prettyPrint?: boolean;
    logHeaders?: boolean;
    logParams?: boolean;
    logResponseBody?: boolean;
    excludePaths?: string[];
}
interface LogEntry {
    requestId: string;
    timestamp: string;
    method: string;
    route: string;
    status: number;
    ip?: string;
    durationMs?: number;
    slow?: boolean;
    user?: string;
    body?: any;
    query?: any;
    responseSnippet?: string;
    origin?: Origin;
    location?: {
        country?: string;
        region?: string;
        city?: string;
    };
    headers?: any;
    params?: any;
}
export type ExpressMiddleware = (req: Request, res: Response, next: NextFunction) => void;
export declare function logger(options: LoggerOptions): ExpressMiddleware;
export {};