import { BloomFilter } from "./bloomFilter.js";
/**
 * Lightweight candidate returned from ANN search
 */
export interface Candidate {
    prId: number;
    scoreHint: number;
}
/**
 * connects bloom filter rejection with ANN retrieval
 *
 */
export declare class CandidateRetriever {
    private bloom;
    private ann;
    constructor(bloom: BloomFilter, ann: {
        search(vector: Float32Array, k: number): Candidate[];
    });
    /**
     * RETURNS CANDIDATE PRs for reranking
     */
    retrieve(key: string, vector: Float32Array, k?: number): Candidate[];
}
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