/**
 * @module
 * Ready-made observability helpers for sently.
 */
import type { MailerHooks } from "../core/types.js";
/**
 * Returns {@link MailerHooks} that log lifecycle events to the console.
 * For production, write your own hooks targeting your metrics/tracing system.
 *
 * @param prefix — log line prefix. Default: `'[sently]'`.
 */
export declare function consoleObserver(prefix?: string): MailerHooks;