import { noop } from '../../noop.ts';
import type { CspOptions } from '../../types.ts';
/**
 * Factory that returns a function to set the `Content-Security-Policy` header based upon
 * the user configuration. Provides protection against XSS and code injection attacks.
 *
 * @param options - CSP configuration options
 *
 * @example
 * const cspGuard = cspFactory({
 *   enabled: true,
 *   directives: {
 *     defaultSrc: ["'self'"],
 *     scriptSrc: ["'self'", '@nonce']
 *   }
 * })
 */
export declare function cspFactory(options: CspOptions): typeof noop;