经过研究，我发现此链接可以更好地理解打字稿和Visual Studio.如果您想提高自己的技能，可以访问此官方页面并阅读一些内容

After some research, I found this link to have a better understanding of typescript and visual studio. If you want to improve your skills, you can go to this official page and have some readings.

解决方案 您只需要更新Visual Studio的Typescript插件即可.您可以在此处在此处下载Visual Studio 2015的最新版本.

The solution You just have to update the typescript plugin for Visual studio. You can download the latest version here for visual studio 2015.

此处为Visual Studio 2017

享受！