我只是运行 Angular CLI项目模板vsix 安装程序，对我来说一切正常.
如果您检查 source.extension./a> Prerequisites部分，您将看到:

I just run the Angular CLI Project Template vsix installer and all works fine for me.
If you check the source.extension.vsixmanifest Prerequisites section you will see:

<Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0,16.0)" DisplayName="Visual Studio core editor" />
<Prerequisite Id="Microsoft.VisualStudio.Component.NuGet" Version="[15.0.26208.0,16.0)" DisplayName="NuGet package manager" />
<Prerequisite Id="Microsoft.VisualStudio.Component.Web" Version="[15.0.26323.1,16.0)" DisplayName="ASP.NET and web development tools" />

只需尝试安装您所缺少的那些，那之后我认为您应该会好的.为此，您需要更新Visual Studio 2017或安装缺少的组件.

Just try to install the ones you are missing and I think you should be fine after then. In order to do that you need to update your visual studio 2017 or get missed components installed.

仅供参考，我的Visual Studio 2017版本看起来像这样:

FYI my visual studio 2017 version looking like this: