import type { SupabaseClient } from "@supabase/supabase-js";
import { Embeddings } from "../embeddings/base.js";
import { Document } from "../document.js";
import { BaseRetriever, BaseRetrieverInput } from "../schema/retriever.js";
import { CallbackManagerForRetrieverRun, Callbacks } from "../callbacks/manager.js";
type SearchResult = [Document, number, number];
export interface SupabaseLibArgs extends BaseRetrieverInput {
    client: SupabaseClient;
    /**
     * The table name on Supabase. Defaults to "documents".
     */
    tableName?: string;
    /**
     * The name of the Similarity search function on Supabase. Defaults to "match_documents".
     */
    similarityQueryName?: string;
    /**
     * The name of the Keyword search function on Supabase. Defaults to "kw_match_documents".
     */
    keywordQueryName?: string;
    /**
     * The number of documents to return from the similarity search. Defaults to 2.
     */
    similarityK?: number;
    /**
     * The number of documents to return from the keyword search. Defaults to 2.
     */
    keywordK?: number;
}
export interface SupabaseHybridSearchParams {
    query: string;
    similarityK: number;
    keywordK: number;
}
export declare class SupabaseHybridSearch extends BaseRetriever {
    lc_namespace: string[];
    similarityK: number;
    query: string;
    keywordK: number;
    similarityQueryName: string;
    client: SupabaseClient;
    tableName: string;
    keywordQueryName: string;
    embeddings: Embeddings;
    constructor(embeddings: Embeddings, args: SupabaseLibArgs);
    protected similaritySearch(query: string, k: number, _callbacks?: Callbacks): Promise<SearchResult[]>;
    protected keywordSearch(query: string, k: number): Promise<SearchResult[]>;
    protected hybridSearch(query: string, similarityK: number, keywordK: number, callbacks?: Callbacks): Promise<SearchResult[]>;
    _getRelevantDocuments(query: string, runManager?: CallbackManagerForRetrieverRun): Promise<Document[]>;
}
export {};