import type { AuthorityProvider } from "./provider.js";
type FetchFn = (url: string, init?: {
    headers?: Record<string, string>;
}) => Promise<Response>;
/**
 * Open PageRank authority source. Returns 0–100 (page_rank_decimal × 10).
 * Requires a free API key; with no key it returns null (no calls). Any network
 * or per-domain error → null. Attribution ("Open PageRank by DomCop") is the
 * caller's responsibility when displaying.
 */
export declare class OpenPageRankProvider implements AuthorityProvider {
    private readonly apiKey;
    private readonly fetchFn;
    private readonly timeoutMs;
    constructor(apiKey: string, fetchFn?: FetchFn, timeoutMs?: number);
    authorityFor(domain: string): Promise<number | null>;
}
export {};
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