import type { AgentModelRequirements } from '../../_misc/AgentModelRequirements';
import { FrontendRAGService } from '../FrontendRAGService';
/**
 * Helper utilities for RAG processing in chat systems
 *
 * @private
 */
export declare class RAGHelper {
    /**
     * Initialize knowledge sources from agent requirements
     * This should be called when starting a chat session
     */
    static initializeKnowledgeSources(requirements: AgentModelRequirements): Promise<FrontendRAGService | null>;
    /**
     * Get relevant context for a user query
     * This should be called before sending the query to the AI model
     */
    static getRelevantContext(ragService: FrontendRAGService | null, userQuery: string): Promise<string>;
    /**
     * Update system message with relevant context for a query
     */
    static updateSystemMessageWithContext(requirements: AgentModelRequirements, ragService: FrontendRAGService | null, userQuery: string): Promise<AgentModelRequirements>;
    /**
     * Get statistics about the knowledge base
     */
    static getKnowledgeStats(ragService: FrontendRAGService | null): {
        sources: number;
        chunks: number;
        isInitialized: boolean;
    } | null;
}
/**
 * Note: [💞] Ignore a discrepancy between file name and entity name
 */