`Microsoft.VisualStudio.JavaScript.Sdk` is not working outside of Windows (but it can)

Describe the bug

JavaScript MSBuild projects (.esproj) are not working outside Windows. But it is possible to get it to work with a workaround (see below)

To Reproduce

1. On Windows, follow the tutorial to create a new ASP.NET Core + RactJS (Preview) solution, as it seems that creating of such a project is impossible outside VS.
2. Copy the resulting solution on the MacOS/Linux environment.
3. Run dotnet build inside the solution folder.

Expected behavior

Build succeeded.

Actual behavior

/usr/local/share/dotnet/sdk/8.0.100-preview.4.23260.5/Microsoft.Common.CurrentVersion.targets(1229,5): error MSB3644: The reference assemblies for .NETFramework,Version=v4.7.2 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks [/Users/seclerp/Downloads/AspNetCoreReactPreview/reactapp/reactapp.esproj]
    0 Warning(s)
    1 Error(s)

Workaround

Adding such a property group to a .esproj file:

<PropertyGroup Condition=" '$(OS)' == 'Unix' " >
    <FrameworkPathOverride>/usr/local/share/dotnet/shared/Microsoft.NETCore.App/7.0.5/mscorlib.dll</FrameworkPathOverride>
</PropertyGroup>

Fixes the issue.

Further technical details

The issue reproduces on both 8.0 preview and 7.0 SDK.

Seems like the root cause of the issue is using the default full-framework toolset for .esproj projects which is absolutely fine on Windows environment for .NET SDK but not the case for Mac OS and Linux.

I’m interested in making PR to fix that but can’t find the sources (does JavaScript.Sdk is even open-sourced?)

Thanks.

.NET info

➜ dotnet --info
.NET SDK:
 Version:   8.0.100-preview.4.23260.5
 Commit:    2268e7b15c

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  13.3
 OS Platform: Darwin
 RID:         osx.13-arm64
 Base Path:   /usr/local/share/dotnet/sdk/8.0.100-preview.4.23260.5/

.NET workloads installed:
There are no installed workloads to display.

Host:
  Version:      8.0.0-preview.4.23259.5
  Architecture: arm64
  Commit:       84a3d0e37e

.NET SDKs installed:
  7.0.203 [/usr/local/share/dotnet/sdk]
  8.0.100-preview.4.23260.5 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 7.0.5 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.0-preview.4.23260.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 7.0.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.0-preview.4.23259.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  x64   [/usr/local/share/dotnet/x64]
    registered at [/etc/dotnet/install_location_x64]

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

[joj]

This was moved to internal tracking (the JavaScript SDK is tracked there). We’re testing at the moment on both Linux and Mac and will probably have support in a preview of VS soon.

[joj]

I’ll move this to our internal tracking systems. It aligns with the revamp we’re doing now on dotnet and esproj, so we can add it to that. Thanks! J