/// <reference path="../adonis-typings/index.d.ts" />
import { ContentTypeSniffingOptions } from '@ioc:Adonis/Addons/Shield';
import { noop } from './noop';
/**
 * Factory function that returns a function to Add `X-Content-Type-Options`
 * header based upon given user options.
 */
export declare function noSniffFactory(options: ContentTypeSniffingOptions): typeof noop;