import type { AuthenticatedRequest } from '@n8n/db';
import type { RequestHandler } from 'express';
export interface UploadMiddleware {
    single(fieldName: string): RequestHandler;
}
export type MulterDestinationCallback = (error: Error | null, destination: string) => void;
export type MulterFilenameCallback = (error: Error | null, filename: string) => void;
export type AuthenticatedRequestWithFile<RouteParams = {}, ResponseBody = {}, RequestBody = {}, RequestQuery = {}> = AuthenticatedRequest<RouteParams, ResponseBody, RequestBody, RequestQuery> & {
    file?: Express.Multer.File;
    fileUploadError?: Error;
};
export declare function hasStringProperty<K extends string>(obj: unknown, key: K): obj is Record<K, string> & object;