/** Public logging callable. Structural type so the published d.ts does not depend on "debug"
 *  (whose @types package is a devDependency and would break skipLibCheck:false consumers). */
export type SqlLogger = (fmt: string, ...args: unknown[]) => void;
/** Root namespace for all sql-client debug logging. Enable with DEBUG=sql:* */
export declare const log: SqlLogger;
/** Create a child logger, e.g. createLogger('client') → DEBUG=sql:client */
export declare function createLogger(namespace: string): SqlLogger;