import { type DomainHint, type SearchAdapter, type SearchResult } from "../search.js";
export declare class DuckDuckGoSearch implements SearchAdapter {
    readonly name = "duckduckgo";
    private lastRequestAt;
    searchHinted(query: string, hint: DomainHint, limit: number, signal?: AbortSignal): Promise<SearchResult[]>;
    search(query: string, limit: number, signal?: AbortSignal): Promise<SearchResult[]>;
}
export declare function looksLikeDdgChallenge(html: string): boolean;
export declare function parseDuckDuckGoHTML(html: string, limit: number): SearchResult[];
export declare function decodeHtmlEntities(s: string): string;
export declare function stripTags(s: string): string;
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