/** Tantivy BM25 catalog search via the Rust core. */
import type { JsonRecord } from "./types.js";
export interface Bm25ScoreCatalogOptions {
    pruneJsonThreshold?: number | null;
    pruneMdThreshold?: number | null;
    pruneEnums?: boolean;
}
export interface Bm25FrontmatterGateResult {
    excluded: Array<{
        entry_dir: string;
        doc_id: string;
    }>;
    trace: JsonRecord;
}
export interface Bm25SearchSkillChunksResult {
    matches: JsonRecord[];
    trace: JsonRecord;
}
export declare function configureBm25Defaults(options?: {
    indexDir?: string;
    stemLanguage?: string;
    stopwords?: string;
    useStopwords?: boolean;
    k1?: number;
    b?: number;
    mmap?: boolean;
}): void;
export declare function bm25CatalogFingerprint(data: JsonRecord): string;
export declare function bm25ScoreCatalog(data: JsonRecord, query: string, options?: Bm25ScoreCatalogOptions): JsonRecord;
export declare function bm25FrontmatterGate(entries: JsonRecord[], query: string, upperLimit?: number): Bm25FrontmatterGateResult;
export declare function bm25SearchSkillChunks(entries: JsonRecord[], query: string, threshold?: number, excluded?: Array<{
    entry_dir: string;
    doc_id: string;
}>): Bm25SearchSkillChunksResult;
export declare function expSimilarity(raw: number): number;
export declare function batchReconstructSkillMatches(groups: JsonRecord[]): JsonRecord[];
export declare function greedySelectSkillItems(survivors: JsonRecord[], itemKind?: string, maxTokens?: number): JsonRecord;
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