import type { Response } from 'express';
import type { RequestLogData, ResponseLogData, RequestTiming, ExtendedRequest } from './types.js';
export declare const formatRequestLogData: (req: ExtendedRequest, requestId: string, customMetadata?: Record<string, unknown>) => RequestLogData;
interface ResponseLogOptions {
    req: ExtendedRequest;
    res: Response;
    requestId: string;
    duration: number;
    isSlowRequest: boolean;
    customMetadata?: Record<string, unknown>;
}
export declare const formatResponseLogData: (options: ResponseLogOptions) => ResponseLogData;
export declare const addTimingDetails: (logData: ResponseLogData, timing: RequestTiming) => ResponseLogData;
export declare const addHeadersToLogData: (logData: RequestLogData | ResponseLogData, headers: Record<string, string | string[]>) => RequestLogData | ResponseLogData;
export declare const addBodyToLogData: (logData: RequestLogData | ResponseLogData, body: unknown) => RequestLogData | ResponseLogData;
export declare const formatErrorLogData: (req: ExtendedRequest, requestId: string, error: Error) => Record<string, unknown>;
interface AuditMetadataOptions {
    req: ExtendedRequest;
    res: Response;
    requestId: string;
    duration: number;
    isSlowRequest: boolean;
}
export declare const formatAuditMetadata: (options: AuditMetadataOptions) => Record<string, unknown>;
export declare const generateRequestLogMessage: (req: ExtendedRequest) => string;
export declare const generateResponseLogMessage: (req: ExtendedRequest, res: Response, duration: number) => string;
export declare const generateErrorLogMessage: (req: ExtendedRequest) => string;
export declare const formatHeaders: (headers: Record<string, string | string[]>, sensitiveHeaders: string[]) => Record<string, string | string[]>;
export declare const formatContentLength: (contentLength: string | undefined) => string;
export {};
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