export declare const RETRY_COUNT_HEADER = "retry-count";
export declare const ORIGIN_EXCHANGE_HEADER = "origin-exchange";
export declare const DEFAULT_DELAY_QUEUE_NAME_PREFIX = "pubsub.retry.delay.queue";
export declare const DEFAULT_RETRY_DELAY_EXCHANGE_NAME = "pubsub.retry.delay.exchange";
export declare const DEFAULT_RETRY_REQUEUE_EXCHANGE_NAME = "pubsub.retry.requeue.exchange";
export declare const DEFAULT_RETRY_DELAYED_MESSAGE_EXCHANGE_NAME = "pubsub.retry.delayed_message.exchange";