import type { Snapshot, ScrapeConfig } from './types.js';
type FetchLike = (url: string, init?: RequestInit) => Promise<Response>;
export declare class Scraper {
    private readonly cfg;
    private timer?;
    private latest;
    private latestAt;
    private readonly fetchFn;
    constructor(cfg: ScrapeConfig, fetchFn?: FetchLike);
    start(): void;
    stop(): Promise<void>;
    snapshot(label: string): Snapshot;
}
export {};
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