import type { Response } from "./types";
/**
 * Sends a standardized JSON response.
 *
 * @param res - Express response object
 * @param statusCode - HTTP status code
 * @param success - Whether the operation was successful
 * @param message - Human-readable message
 * @param data - Optional payload data
 */
export declare function sendResponse<T = unknown>(res: Response, statusCode: number, success: boolean, message: string, data?: T): void;
/**
 * Sends a standardized error response.
 *
 * @param res - Express response object
 * @param statusCode - HTTP status code (default: 500)
 * @param message - Error message (default: "Server error")
 */
export declare function sendErrorResponse(res: Response, statusCode?: number, message?: string): void;
/**
 * Sends a standardized success response.
 *
 * @param res - Express response object
 * @param statusCode - HTTP status code (default: 200)
 * @param message - Success message (default: "Operation successful")
 * @param data - Optional payload data
 */
export declare function sendSuccessResponse<T = unknown>(res: Response, statusCode?: number, message?: string, data?: T): void;
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