import { HttpClient } from '@angular/common/http';
import { Store } from '@ngrx/store';
import { Observable } from 'rxjs';
import { ChatSession } from './chat-session';
import { PostMessage } from '../store/entities';
export declare class ChatService {
    private http;
    private store;
    private session;
    protected jsonParseReviver: ((key: string, value: any) => any) | undefined;
    $chat: Observable<{
        chat: any;
    }>;
    constructor(http: HttpClient, store: Store<{
        chat: any;
    }>, session: ChatSession);
    sendMessage(message: PostMessage): Observable<any>;
}