import type { AgentKnowledgeOverrides, StreamPart, KnowledgeRetrievalResult, RetrievalCacheAdapter, SourceRef } from '../../types/index.js';
export interface CitationRetrievalProvider {
    retrieve(query: string, cache: RetrievalCacheAdapter | undefined, agentOverrides?: AgentKnowledgeOverrides, isVoice?: boolean): Promise<{
        results: KnowledgeRetrievalResult[];
        citations?: SourceRef[];
        events: StreamPart[];
    }>;
}
export interface CitationRetrievalResult {
    results: KnowledgeRetrievalResult[];
    citations: SourceRef[];
    events: StreamPart[];
}
export declare function retrieveWithCitations(provider: CitationRetrievalProvider, query: string, cache: RetrievalCacheAdapter | undefined, agentOverrides?: AgentKnowledgeOverrides, isVoice?: boolean): Promise<CitationRetrievalResult>;
export declare function normalizeCitations(results: KnowledgeRetrievalResult[], nativeCitations?: readonly SourceRef[]): SourceRef[];