export declare type ActivityType = 'message' | 'contactRelationUpdate' | 'conversationUpdate' | 'typing' | 'endOfConversation' | 'event' | 'invoke' | 'deleteUserData' | 'messageUpdate' | 'messageDelete' | 'installationUpdate' | 'messageReaction' | 'suggestion' | 'trace' | 'handoff';
export interface ChannelAccount {
    readonly id: string;
    readonly name: string;
    readonly aadObjectId: string | null;
}
export interface MessageReaction extends Record<string, any> {
    readonly type: string;
}
export interface ConversationAccount {
    readonly id: string;
    readonly isGroup: boolean;
    readonly name: string | null;
    readonly conversationType: string;
    readonly tenantId: string;
}
export interface ConversationReference {
    readonly activityId: string;
    readonly bot: ChannelAccount | null;
    readonly channelId: string;
    readonly conversation: ConversationAccount;
    readonly serviceUrl: string;
    readonly user: ChannelAccount | null;
}
export interface CardAction {
    readonly channelData: string;
    readonly displayText: string | null;
    readonly image: string | null;
    readonly text: string | null;
    readonly title: string | null;
    readonly type: string;
    readonly value: Record<string, any> | null;
}
export interface SuggestedActions {
    readonly actions: CardAction[];
    readonly to: string[];
}
export interface Attachment {
    readonly content: Record<string, null>;
    readonly contentType: string | null;
    readonly contentUrl: string | null;
    readonly name: string | null;
    readonly thumbnailUrl: string | null;
}
export interface TextHighlight {
    readonly number: string | null;
    readonly text: string | null;
}
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