“CheckFileSystemCaseSensitive”任务意外失败，无法加载文件或程序集“System.IO.FileSystem”

Question

在我的 Visual Studio 2017、ASP.NET Core、MVC Web 项目中，我刚刚添加了 Microsoft.TypeScript.MSBuild NuGet 包 v2.3.1，同时将我的 ASP.NET Core 程序集从 1.0.* 更新到了 1.1.1。现在，当我构建项目时突然出现以下异常：

Severity    Code    Description Project File    Line    Suppression State
Error   MSB4018 The "CheckFileSystemCaseSensitive" task failed unexpectedly.
System.IO.FileNotFoundException: Could not load file or assembly 'System.IO.FileSystem, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
File name: 'System.IO.FileSystem, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
   at TypeScript.Tasks.CheckFileSystemCaseSensitive.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()

双击异常消息会在 Microsoft.TypeScript.targets 文件中的这些行中找到一个：

<Target Name="CheckFileSystemCaseSensitive">
    <CheckFileSystemCaseSensitive
       MSBuildThisFileFullPath="$(MSBuildThisFileFullPath)" >
      <Output TaskParameter="IsFileSystemCaseSensitive"  PropertyName="IsFileSystemCaseSensitive" />
    </CheckFileSystemCaseSensitive>
</Target>

它说“未定义 MSBuildThisFileFullPath”。

我已尝试添加对 NETStandard.Library 的引用，如下所示：https://github.com/dotnet/corefx/issues/16206，但这没有任何区别。

诊断 MSBuild 输出如下所示：

1>Target "CheckFileSystemCaseSensitive" in file "C:\Users\dkent\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets":
1>  Using "CheckFileSystemCaseSensitive" task from assembly "C:\Users\dkent\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\TypeScript.Tasks.dll".
1>  Task "CheckFileSystemCaseSensitive"
1>    Task Parameter:MSBuildThisFileFullPath=C:\Users\dkent\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets
1>    [...]\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets(172,5): error MSB4018: The "CheckFileSystemCaseSensitive" task failed unexpectedly.
1>    [...]\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets(172,5): error MSB4018: System.IO.FileNotFoundException: Could not load file or assembly 'System.IO.FileSystem, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
1>    [...]\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets(172,5): error MSB4018: File name: 'System.IO.FileSystem, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
1>    [...]\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets(172,5): error MSB4018:    at TypeScript.Tasks.CheckFileSystemCaseSensitive.Execute()
1>    [...]\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets(172,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
1>    [...]\.nuget\packages\microsoft.typescript.msbuild\2.3.1\tools\netstandard1.3\Microsoft.TypeScript.targets(172,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()
1>  Done executing task "CheckFileSystemCaseSensitive" -- FAILED.

感谢您的任何建议。

Answer 1

我在 Vs2015 中遇到了同样的错误，我从 https://www.microsoft.com/en-us/download/confirmation.aspx?id=48593 安装了类型脚本， 错误消失了，你可以试试

Answer 2

（老问题，但这可能会帮助其他人寻找解决此问题的方法）：

作为为您的 VS 项目配置 TypeScript 的另一种方法，您可以尝试将 Microsoft TypeScript Compiler nuget 包添加到解决方案中，而不是 Microsoft.TypeScript.MSBuild 包。您可能需要在 .csproj 文件中配置<TypeScriptToolsVersion>（例如，您只需要次要和主要版本）：

<TypeScriptToolsVersion>2.3</TypeScriptToolsVersion>

Answer 3

对于 Visual Studio 2017，直接从 TypeScript SDK 下载页面安装 TypeScript 3.0 SDK。download