import { CacheHelper } from './CacheHelper.js';
export declare class NuxtMultiCacheRouteCacheHelper extends CacheHelper {
    /**
     * Whether a stale response can be served during revalidation.
     */
    staleWhileRevalidate: boolean | null;
    /**
     * Sets whether a stale respones can be returned while a new one is being generated.
     */
    allowStaleWhileRevalidate(): NuxtMultiCacheRouteCacheHelper;
}