import { Kysely } from "kysely";
import { Database } from "../db";
/**
 * Move an outbox event to dead-letter state. `processed_at` is also set so the
 * relay stops considering it, while `dead_lettered_at` and `final_error`
 * remain available for the management API's failed-events endpoints.
 */
export declare function deadLetterOutboxEvent(db: Kysely<Database>): (id: string, finalError: string) => Promise<void>;