export interface ConversationParticipant {
    server_user_id: string;
    nickname: string;
    avatar_file_id: string | null;
    /** The owl look, so a row draws the same face the member list does. */
    avatar_worn: string | null;
}
export interface DirectConversation {
    conversation_id: string;
    /** Two people, or more than two. Groups get their own section. */
    kind: "dm" | "group";
    /** What a group was named. Null means read it off `members`. */
    name: string | null;
    /** An upload. Null means draw one from the name. */
    icon_file_id: string | null;
    created_at: string;
    last_message_at: string | null;
    /** Everybody but you. */
    members: ConversationParticipant[];
    /** The first of `members`. The whole story on a one-to-one. */
    other: ConversationParticipant;
}
export declare function conversationTitle(conversation: DirectConversation): string;