cocoscreator用typescript怎么继承cc.ActionInterval这个类

cocoscreator用typescript怎么继承cc.ActionInterval这个类

继承后模拟器报如下错误:
Simulator: ERROR: TypeError: _super.call is not a function. (In ‘_super.call(this)’, ‘_super.call’ is undefined), location: assets/script/extend/action/OrbitTrack.js:14:32

浏览器里面确可以正确执行