Interface PresenceTracker

interface PresenceTracker {
    bind: (sock: any) => () => void;
    clear: () => void;
    get: (
        user: string,
    ) =>
        | {
            chatId?: string;
            lastSeen?: number;
            presence: string;
            updatedAt: number;
        }
        | undefined;
    getOnlineUsers: () => string[];
    handler: (update: { id?: string; presences?: Record<string, any> }) => void;
    isOnline: (user: string) => boolean;
    isTyping: (user: string) => boolean;
    onChange: (
        cb: (
            info: {
                chatId?: string;
                lastSeen?: number;
                presence: string;
                user: string;
                wasPresence?: string;
            },
        ) => void,
    ) => () => void;
    size: number;
}