import type { Database } from "./db.js";
import type { BatchSearchRequest, BatchSearchResult, SearchOptions, SearchResult } from "../search/types.js";
export type { BatchSearchRequest, BatchSearchResult, SearchOptions, SearchResult, } from "../search/types.js";
export declare class SearchEngine {
    private db;
    private planner;
    constructor(db: Database);
    search(query: string, opts?: SearchOptions): SearchResult[];
    searchMany(requests: BatchSearchRequest[]): BatchSearchResult[];
    private searchWithPlan;
    private expandPlans;
    private searchSingle;
    private fetchCandidates;
    private buildFtsQuery;
    private quoteTerm;
    private rerank;
    private scoreCandidate;
    private collapseDuplicates;
    private preferenceScore;
    private canonicalPageKey;
    private inferPathType;
    private pathTypeScore;
    private keywordOverlap;
    private hasPhraseMatch;
    private primaryTitle;
    private extractVersionTag;
}