/**
 * Browse collection content from GitHub
 */
import { GitHubClient } from './GitHubClient.js';
import { CollectionCache } from '../cache/CollectionCache.js';
import { CollectionIndexManager } from './CollectionIndexManager.js';
export declare class CollectionBrowser {
    private githubClient;
    private collectionCache;
    private indexManager;
    private baseUrl;
    constructor(githubClient: GitHubClient, collectionCache: CollectionCache, indexManager: CollectionIndexManager);
    /**
     * Browse collection content by section and type
     * Uses CollectionIndexManager for fast browsing with background refresh
     * Falls back to cached data when GitHub API is not available or not authenticated
     * @param section - Top level section: library, showcase, or catalog
     * @param type - Optional content type within the library section (personas, skills, etc.)
     */
    browseCollection(section?: string, type?: string): Promise<{
        items: any[];
        categories: any[];
        sections?: any[];
    }>;
    /**
     * Browse collection using the fast collection index
     * Returns null if index is not available or browsing fails
     */
    private browseFromIndex;
    /**
     * Get unique content types from collection index
     */
    private getContentTypesFromIndex;
    /**
     * Get items from collection index by section and type
     */
    private getItemsFromIndex;
    /**
     * Convert index entries to GitHub API format for compatibility
     */
    private convertIndexItemsToGitHubFormat;
    /**
     * Browse collection from cached data
     */
    private browseFromCache;
    /**
     * Browse collection from seed data as last resort
     */
    private browseFromSeedData;
    /**
     * Get unique content types from items
     */
    private getContentTypesFromItems;
    /**
     * Filter items by section and type
     */
    private filterItemsBySection;
    /**
     * Convert cache items to GitHub API format
     */
    private convertCacheItemsToGitHubFormat;
    /**
     * Format collection browse results
     */
    formatBrowseResults(items: any[], categories: any[], section?: string, type?: string, personaIndicator?: string): string;
}
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