import type { KnowledgeProvider, KnowledgeQuery, KnowledgeSearchResult, KnowledgeItem, ProviderHealth, IKnowledgeProviderRegistry, KnowledgeProviderRegistryConfig } from "./types";
export declare class KnowledgeProviderRegistry implements IKnowledgeProviderRegistry {
    private providers;
    private config;
    constructor(config?: Partial<KnowledgeProviderRegistryConfig>);
    register(provider: KnowledgeProvider): Promise<void>;
    unregister(name: string): Promise<void>;
    search(query: KnowledgeQuery): Promise<KnowledgeSearchResult[]>;
    getById(id: string): Promise<KnowledgeItem | null>;
    getProviders(): KnowledgeProvider[];
    getProvider(name: string): KnowledgeProvider | undefined;
    healthCheck(): Promise<Map<string, ProviderHealth>>;
    private getTargetProviders;
    private mergeResults;
    private roundRobinMerge;
    private priorityMerge;
    private deduplicateResults;
    private contentHash;
    private parseId;
}
export declare function getKnowledgeProviderRegistry(): KnowledgeProviderRegistry;
export declare function resetKnowledgeProviderRegistry(): void;