import { Channel } from "amqplib";
export declare class DeadLetterHandler {
    private channel;
    private maxRetries;
    private retryExchange;
    constructor(channel: Channel, maxRetries: number, retryExchange: string);
    setupDeadLetterConsumer(dlqName: string): Promise<void>;
    private extractDeadLetterDetails;
    private handleDeadLetter;
    private shouldAttemptRecovery;
    private attemptMessageRecovery;
    private notifyDeadLetter;
    private incrementDeadLetterMetrics;
}