/// <reference path="../adonis-typings/index.d.ts" />
import { CspOptions } from '@ioc:Adonis/Addons/Shield';
import { noop } from './noop';
/**
 * Factory that returns a function to set the `Content-Security-Policy` header based upon
 * the user config
 */
export declare function cspFactory(options: CspOptions): typeof noop;