declare const enum ChatType {
  Private = 'private',
  Group = 'group',
  Temp = 'temp'
}

interface IPrivateChat {
  chatID: number;
  chatType: ChatType.Private;
}

interface IGroupChat {
  chatID: number;
  chatType: ChatType.Group;
}

interface ITempChat {
  chatID: {qq: number, group: number, toString: () => string};
  chatType: ChatType.Temp;
}

type IChat = IPrivateChat | IGroupChat | ITempChat;

interface ILock {
  workon: number;
  feed: string[];
  threads: {
    [key: string]: {
      permaFeed: string,
      offset: string,
      updatedAt: string,
      subscribers: IChat[],
    },
  };
}