运行自带Demo，控制台出现一些未定义错误

运行demo,

Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TToast.qml"
Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TRectangle.qml"
Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TSVGIcon.qml"
Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TIconButton.qml"
Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TButton.qml"
Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TMouseArea.qml"
Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TLabel.qml"
Cyclic dependency detected between "qrc:/net.toou.2d/controls/TToast.qml" and "qrc:/net.toou.2d/controls/TAwesomeIcon.qml"
qrc:/net.toou.2d/controls/TPopover.qml:80:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }

点击切换主题按钮，主题菜单弹出后，控制台会报这些错误，

<Unknown File>: otherData is undefined. Adding an object with a undefined member does not create a role for it.

大概看了下，没有看出来具体问题，开头那个循环依赖是什么问题，请教下？

otherData is undefined. Adding an object with a undefined member does not create a role for it

这个问题可能是这些变量没有初始化导致的，源码对应位置初始化后不会报 undefined 错误了。。。