如果你想知道在一个特定的项目中使用了什么版本的Typescript，去你的package-lock。json文件。你会发现这样的东西:

"typescript": {
      "version": "3.5.3"
}

如果你只为Visual Studio安装了TypeScript，那么:

启动Visual Studio命令提示符 输入tsc -v并按Enter

Visual Studio 2017版本15.3及以上将TypeScript版本绑定到单个项目，正如这个答案所指出的:

右键单击解决方案资源管理器中的项目节点 单击“属性” 进入TypeScript Build选项卡

你可以在Visual Studio 2013中的NuGet Package Manager Console中运行它。

tsc -v命令在Windows Path变量的SDK目录集中读取TypeScript编译器版本。这并不一定反映安装的最新版本，因为Path变量没有随着后续安装而更新。

VS.NET用来编译TypeScript的版本在项目的配置中:

< TypeScriptToolsVersion > 1。5 < / TypeScriptToolsVersion >

为了更详细地解释这一点，我创建了下面的帖子，其中有关于安装的TypeScript版本的细节，以及VS.NET使用哪个版本来编译TypeScript文件。

TypeScript安装的版本和Visual Studio使用的版本?

我还在Microsoft Connect上添加了一个特性请求，以便更容易地查看和切换VS.NET中的TypeScript目标版本。这并不是一个真正的TypeScript特性请求，而是一个VS.NET IDE增强。

允许从项目属性IDE切换TypeScript配置版本

如果你想知道在一个特定的项目中使用了什么版本的Typescript，去你的package-lock。json文件。你会发现这样的东西:

"typescript": {
      "version": "3.5.3"
}

As far as I understand VS has nothing to do with TS installed by NPM. (You may notice after you install TS using NPM, there is no tsc.exe file). VS targets only tsc.exe installed by TS for VS extension, which installes TS to c:\Program Files (x86)\Microsoft SDKs\TypeScript\X.Y. You may have multiple folders under c:\Program Files (x86)\Microsoft SDKs\TypeScript. Set TypeScriptToolsVersion to the highest version installed. In my case I had folders "1.0", "1.7", "1.8", so I set TypeScriptToolsVersion = 1.8, and if you run tsc - v inside that folder you will get 1.8.3 or something, however, when u run tsc outside that folder, it will use PATH variable pointing to TS version installed by NPM, which is in my case 1.8.10. I believe TS for VS will always be a little behind the latest version of TS you install using NPM. But as far as I understand, VS doesnt know anything about TS installed by NPM, it only targets whateve versions installed by TS for VS extensions, and the version specified in TypeScriptToolsVersion in your project file.