import type { MiddlewareHandler, SSRManifest } from '../@types/astro.js';
import type { PipelineHookFunction } from '../core/pipeline.js';
export declare function createI18nMiddleware(i18n: SSRManifest['i18n'], base: SSRManifest['base'], trailingSlash: SSRManifest['trailingSlash']): MiddlewareHandler | undefined;
/**
 * This pipeline hook attaches a `RouteData` object to the `Request`
 */
export declare const i18nPipelineHook: PipelineHookFunction;