public static GameStart:GameStart;
GameMain.GameStart=new GameStart();
Laya.stage.addChild(GameMain.GameStart);
报错：file: 'file:///e%3A/LAYABOX/CaiCi/src/GameMain.ts'
severity: '错误'
message: 'Argument of type 'GameStart' is not assignable to parameter of type 'Node'.
Property '_childs' is missing in type 'GameStart'.'
at: '56,29'
source: 'ts'
