import type { DatabaseConnector, ConnectionConfig } from './connector.js';
import type { QueryExecutionOptions, QueryResult } from './result-types.js';
import { ConnectionPoolManager } from './connection-pool.js';
import { type SQLParamSpec } from './sql-params.js';
/**
 * A reconnect may replay a statement, so it is limited to one read-only
 * statement. This deliberately rejects semicolon-separated scripts and any
 * data-changing keyword even when a connector reports a lost session.
 */
export declare function isReconnectSafeReadOnlySql(sql: string): boolean;
export declare function isRecoverableConnectionLoss(error: unknown): boolean;
export declare class QueryExecutor {
    private pool;
    constructor(pool?: ConnectionPoolManager);
    getConnector(config: ConnectionConfig): Promise<DatabaseConnector>;
    executeQuery(sql: string, params: SQLParamSpec[], variables: Record<string, unknown>, config: ConnectionConfig): Promise<QueryResult>;
    executePositional(sql: string, paramValues: unknown[], config: ConnectionConfig, options?: QueryExecutionOptions): Promise<QueryResult>;
    disconnect(): Promise<void>;
}
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