import 'reflect-metadata';
import { Connection } from 'typeorm';
import { ServerDataBaseConfig } from '../../../common/config/private/PrivateConfig';
export declare class SQLConnection {
    private static entries;
    private static connection;
    private static FIXED_SQL_TABLE;
    static getEntries(): Function[];
    static addEntries(tables: Function[]): Promise<void>;
    static getConnection(): Promise<Connection>;
    static tryConnection(config: ServerDataBaseConfig): Promise<boolean>;
    static init(): Promise<void>;
    static close(): Promise<void>;
    /**
     * Clears up the DB from unused tables. use it when the entities list are up-to-date (extensions won't add any new)
     */
    static removeUnusedTables(): Promise<void>;
    static getSQLiteDB(config: ServerDataBaseConfig): string;
    private static createConnection;
    private static schemeSync;
    private static getDriver;
}