private export const MINIMUM_TYPING_INTERVAL_IN_MILLISECONDS = 8000 ; private export const PARTICIPANTS_THRESHOLD = 20 ; private azure export const ACSKnownMessageType = { text : 'text' as const , html : 'html' as const , richtextHtml : 'richtext/html' as const , topicUpdated : 'topicUpdated' as const , participantAdded : 'participantAdded' as const , participantRemoved : 'participantRemoved' as const } ;