你可以做npm list | grep typescript，如果它是通过npm安装的。

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

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.

打开一个(普通的，不是VS)命令提示符或PowerShell提示符。

tsc.exe - v tsc。cmd - v tsc - v

如果你安装了相同版本的TypeScript for Visual Studio并使用npm，以上三个命令的输出应该是相同的。

如果没有，请检查System PATH，查看在路径层次结构中的位置以及列出了哪个typescript目录。对于PowerShell用户，简单的方法是: $env:path split ';'

注意不要在System PATH变量中列出任何TypeScript目录或多个TypeScript目录。截至2017年6月9日，我的系统路径看起来是这样的(只有顶部的部分，在这种情况下这是最重要的): Ps >$env:path -split ';' C:\Windows\system32 C:\Windows C:\Windows\System32\Wbem C:\Windows\System32\ WindowsPowerShell \ \ v1.0 C:\Program Files (x86)\Microsoft sdk \TypeScript\2.3 C: \ nodejs \ C:\Users\ {username} \ AppData \ \ npm徘徊

注意，PATH中只包括2.3目录，而不是多个版本。

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