ts 里使用camera 发布后无效，但是点预览游戏是正常的，可能是什么原因

Creator 2.x
#1

const {ccclass, property} = cc._decorator;

@ccclass
export default class CameraControlT extends cc.Component {

@property(cc.Node)
target: cc.Node = null;

// LIFE-CYCLE CALLBACKS:
visibleSize;
ratioX;
ratioY;
onLoad () {
    cc.log("CameraControlT onLoad")
}

start () { 
    cc.log("CameraControlT start")
    this.visibleSize = cc.view.getVisibleSize();
    this.node.position = cc.p(this.visibleSize.width/2,this.visibleSize.height/2);
    let po=this.target.parent.convertToWorldSpaceAR(this.target.position);
    this.ratioX=this.visibleSize.width/2-po.x;
    this.ratioY=this.visibleSize.height/2;
}

update (dt) {
    let targetPos;
     targetPos = this.target.parent.convertToWorldSpaceAR(this.target.position);
     targetPos=cc.p(targetPos.x+this.ratioX,this.ratioY);
     cc.log("CameraControlT update",targetPos)
     this.node.position=targetPos;
}

}

#2

@panda