Method _onDisconnect

client/scripts/network.js:71–76

()

    }

    _onDisconnect() {
        console.log('WS: server disconnected');
        Events.fire('notify-user', 'Connection lost. Retry in 5 seconds...');
        clearTimeout(this._reconnectTimer);
        this._reconnectTimer = setTimeout(_ => this._connect(), 5000);
    }

    _onVisibilityChange() {
        if (document.hidden) return;