import 'reflect-metadata';
/**
 * @LeaveRoom decorator
 * Automatically leaves a room when the handler is executed
 *
 * @param room - The room name to leave
 *
 * @example
 * ```typescript
 * @OnMessage('leave_chat')
 * @LeaveRoom('chat_room')
 * async handleLeaveChat(socket: Socket, data: any) {
 *   // socket has already left 'chat_room'
 * }
 * ```
 */
export declare function LeaveRoom(room: string | ((data: any) => string)): (target: any, propertyKey: string, descriptor: PropertyDescriptor) => PropertyDescriptor;
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