import { RunnableSequence } from "@langchain/core/runnables";
import { CreateSqlQueryChainFields } from "langchain/chains/sql_db";
import { SqlDatabase } from "langchain/sql_db";
import { DataSource, DataSourceOptions } from "typeorm";
export declare const database: {
    createDataSource: (options: DataSourceOptions) => Promise<DataSource>;
    createSqlChain: ({ llm, db, prompt, k, dialect }: CreateSqlQueryChainFields) => Promise<RunnableSequence<Record<string, unknown>, string>>;
    db: typeof SqlDatabase;
};