import Logger from '../services/logger.js';
import Cache from '../services/cache.js';
import type { Request, Response } from 'express';
export declare const defaultHashStrategy: <T>(obj: T) => T;
export declare const defaultHeadersFilter: (res: Response) => Array<[string, string]>;
export declare const requestToCacheKey: (req: Request, hashStrategy?: unknown) => string;
interface ViewCacheOptions {
    ttl?: number | string | null;
    headersFilter?: (res: Response) => Array<[string, string]>;
    hashStrategy?: unknown;
    namespace?: string;
}
declare function ViewCacheMiddleware(cache: Cache, logger: Logger): (options?: ViewCacheOptions | number | string | null) => import("express").RequestHandler<import("express-serve-static-core").ParamsDictionary, any, any, import("qs").ParsedQs, Record<string, any>>;
export default ViewCacheMiddleware;