import { type FetchTuning, type TierResult } from "../fetch-utils.js";
export declare function pollCrawl4aiTask(taskId: string, url: string, maxChars: number, signal: AbortSignal, preferFit?: boolean): Promise<TierResult | null>;
export declare function crawl4aiFetch(url: string, maxChars?: number, preferFit?: boolean, tuning?: FetchTuning): Promise<TierResult | null>;
export declare function applyTier2Readability(fetched: TierResult, url: string): TierResult;