import { Observable } from 'rxjs';
import { IMessage } from './interfaces';
import { ChatMachineStatesEnum, ChatMachineEventEnum } from './interfaces-livechat';
export declare class MessageBus {
    private msgSubject;
    private statusSubject;
    private machineStateSubject;
    constructor();
    publishMessageToBus(message: IMessage): void;
    clearMessages(): void;
    getMessage(): Observable<any>;
    publishMachineEventToBus(status: ChatMachineEventEnum): void;
    clearStatuses(): void;
    getMachineEventFromBus(): Observable<any>;
    publishMachineStateToBus(state: ChatMachineStatesEnum): void;
    clearMachineStates(): void;
    getMachineStateFromBus(): Observable<any>;
}