import AudioVideoEventAttributes from './AudioVideoEventAttributes' ; import DeviceEventAttributes from './DeviceEventAttributes' ; import EventName from './EventName' ; import MeetingHistoryState from './MeetingHistoryState' ; /**
 * [[EventController]] keeps track of events and notifies audio-video observers.
 * An event describes the success and failure conditions for the meeting session.
 */ export default interface EventController { /**
     * Notifies observers of an event.
     */ publishEvent ( name , attributes ? ) : Promise < void > ; /**
     * Adds a state to the meeting history stack.
     */ pushMeetingState ( state ) : Promise < void > ; }