import { noop } from '../noop.ts';
import type { HstsOptions } from '../types.ts';
/**
 * Factory function that returns a new function to add `Strict-Transport-Security`
 * header based upon given user options. Enables HTTPS enforcement for enhanced security.
 *
 * @param options - HSTS configuration options
 *
 * @example
 * const hstsGuard = hstsFactory({
 *   enabled: true,
 *   maxAge: '1 year',
 *   includeSubDomains: true
 * })
 */
export declare function hstsFactory(options: HstsOptions): typeof noop;