import type { Embeddings } from "@langchain/core/embeddings";
export interface ScoredChunk {
    text: string;
    source: string;
    score: number;
}
export declare class KnowledgeBase {
    private embeddings;
    private chunks;
    constructor(embeddings: Embeddings);
    add(texts: {
        text: string;
        source: string;
    }[]): Promise<void>;
    retrieve(query: string, k?: number): Promise<ScoredChunk[]>;
    get size(): number;
}