import { Observable } from 'rxjs';
import { User } from '../user';
import { Message } from '../message';
import { Request } from '../request';
export interface Group {
    id: string;
    title: string;
    description?: string;
    users: User[];
    category: string;
    createdBy: User;
    banner?: string;
    anyoneCanAcceptRequest: boolean;
    anyoneCanModifyGroup: boolean;
    approveNewUsers: boolean;
    token?: string;
    createdAt: Date;
    updatedAt: Date;
    usersMap?: {
        [key: string]: User;
    };
    hasUnread$?: Observable<boolean>;
    hasUnread?: boolean;
    lastMessage$: Observable<Message>;
    lastMessage?: Message;
    messages$?: Observable<Message[]>;
    lastMessageReceivedAt?: Date;
    requests?: Request[];
}
export declare function createGroup(params: Partial<Group>): Group;