import pg from "pg";
/**
 * Safely releases a client back to the pool, handling potential
 * "already released" errors gracefully
 */
export declare function safelyReleaseClient(client: pg.PoolClient): void;
/**
 * Determine if a query is read-only (DQL)
 * @param sql The SQL query to analyze
 * @returns True if the query is read-only
 */
export declare function isReadOnlyQuery(sql: string): boolean;
/**
 * Generate a unique transaction ID
 * @returns A unique transaction identifier
 */
export declare function generateTransactionId(): string;