/**
 * HackerNews Site Handler
 *
 * Extracts content from HackerNews using the Firebase API.
 * Supports individual items (stories, comments) and the front page (top stories).
 */
import { BaseSiteHandler, type FetchFunction, type SiteHandlerOptions, type SiteHandlerResult } from './types.js';
export declare class HackerNewsHandler extends BaseSiteHandler {
    readonly name = "HackerNews";
    readonly strategy: "api:hackernews";
    canHandle(url: string): boolean;
    extract(url: string, fetch: FetchFunction, opts: SiteHandlerOptions): Promise<SiteHandlerResult | null>;
    /**
     * Extract a single item (story, comment, etc.)
     */
    private extractItem;
    /**
     * Extract top stories from the front page
     */
    private extractTopStories;
    /**
     * Extract item ID from HackerNews URL
     */
    private getItemId;
    /**
     * Format HackerNews item data into readable text/markdown
     */
    private formatItem;
    /**
     * Format HackerNews front page stories
     */
    private formatStories;
}
export declare const hackerNewsHandler: HackerNewsHandler;
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