import type { Context } from "../context.ts";
import type { PubrelPacket } from "../deps.ts";
/**
 * Handles PUBREL (QoS 2 publish release) packets
 *
 * @param ctx - The connection context
 * @param packet - The PUBREL packet received from the client
 * @returns Promise that resolves when handling is complete
 * @description
 * For QoS 2 message delivery:
 * 1. Initiates onward delivery of the Application Message
 * 2. Discards the stored message
 * 3. Sends PUBCOMP packet with the Packet Identifier
 */
export declare function handlePubrel(ctx: Context, packet: PubrelPacket): Promise<void>;
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