***知道为什么服务TypeScript文件.

It would be good to know why you want to serve TypeScript files.

据我了解，TypeScript用于编译为Javascript，然后在浏览器中执行.当前，没有对TypeScript的本机支持(如果我输入错了，请纠正我).

As far as I understand, TypeScript is used to compile to Javascript, which is then executed in a browser. Currently, there is no native support for TypeScript (correct me if I'm wrong).

如果您仍然希望通过IIS提供.ts文件，则仍可以在与IIS Admin相关联的自定义mime类型中添加与.ts.该标准定义了前缀x.，vnd.和prs.以及vnd.前缀还列在标准化的mime类型 text/和

If you still want to serve .ts files via IIS, you can still add a custom mime-type in IIS Admin associated with .ts. The standard defines the prefixes x., vnd. and prs., and the vnd. prefix is also listed in the standardized mime types text/ and application/.

因此，根据您的用法，您可以选择text/x.typescript或text/prs.typescript.

So, depending on your usage, you might choose text/x.typescript or text/prs.typescript.