/**
 * Connection factory — resolves `(type, connectionString, opts)` to an open
 * `DbConnection`. Keeps the tool layer driver-agnostic.
 *
 * The factory loads the per-engine driver via `createRequire` only when that
 * engine is actually requested; agents using SQLite never pay the cost of
 * having `pg` or `mysql2` resolvable.
 */
import { DbConnection, DbType } from '../types';
export interface CreateConnectionOptions {
    type: DbType;
    connectionString: string;
    allowWrites: boolean;
}
export declare function createConnection(opts: CreateConnectionOptions): Promise<DbConnection>;