export declare interface ChannelHookData {
  channel: string
  event: ChannelLifecycleEvent
  timestamp: number
  socketId?: string
  subscriberCount?: number
  data?: unknown
}
/**
 * Channel Lifecycle Hooks
 *
 * Fire callbacks on channel lifecycle events
 */
export type ChannelLifecycleEvent = 'created' | 'subscribed' | 'unsubscribed' | 'empty' | 'destroyed';
export type ChannelHookCallback = (_data: ChannelHookData) => void | Promise<void>;
export declare class ChannelLifecycleManager {
  on(event: ChannelLifecycleEvent | 'all', callback: ChannelHookCallback): void;
  off(event: ChannelLifecycleEvent | 'all', callback: ChannelHookCallback): void;
  fire(data: ChannelHookData): Promise<void>;
  channelCreated(channel: string, socketId?: string): Promise<void>;
  channelSubscribed(channel: string, socketId: string, subscriberCount: number): Promise<void>;
  channelUnsubscribed(channel: string, socketId: string, subscriberCount: number): Promise<void>;
  channelEmpty(channel: string): Promise<void>;
  channelDestroyed(channel: string): Promise<void>;
}