import { type NextRequest, NextResponse } from "next/server.js";
type Middleware<T = any> = (request: NextRequest) => Promise<NextResponse<T>> | NextResponse<T>;
/**
 * Create a Next.JS middleware, which enhances the current middleware with an
 * automatic rewrite from the "old" CMS Preview URLs to the "new" CMS Preview
 * URLs. This will make "side-by-side" previews work, as well as can help with
 * supporting CMS 12
 *
 * @param       middleware      Your middleware, which should be wrapped by
 *                              this middleware
 * @param       adminSlug       The slug used by Optimizely CMS for the admin
 *                              routes (defaults to "ui", a common alternative
 *                              is "episerver")
 * @param       previewRoute    The preview route within the frontend (defaults
 *                              to "/preview")
 * @returns     The new middleware
 */
export declare function withEditFallback<T = unknown>(middleware?: Middleware<T>, adminSlug?: string, previewRoute?: string): Middleware<T>;
export {};