Fixup build failures

Author: pranavkm

src/Components/Blazor/Build/src/Microsoft.AspNetCore.Blazor.Build.csproj

@@ -27,11 +27,16 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Condition="'$(BuildNodeJS)' != 'false' and '$(BuildingInsideVisualStudio)' != 'true'"
+    <!-- Add a project dependency without reference output assemblies to enforce build order -->
+    <!-- Applying workaround for https://github.com/microsoft/msbuild/issues/2661 and https://github.com/dotnet/sdk/issues/952 -->
+    <ProjectReference
       Include="$(RepoRoot)src\Components\Web.JS\Microsoft.AspNetCore.Components.Web.JS.npmproj"
-      ReferenceOutputAssembly="false"
+      ReferenceOutputAssemblies="false"
       SkipGetTargetFrameworkProperties="true"
-      UndefineProperties="TargetFramework" />
+      UndefineProperties="TargetFramework"
+      Private="false"
+      Condition="'$(BuildNodeJS)' != 'false' and '$(BuildingInsideVisualStudio)' != 'true'" />
+
     <Reference Include="Microsoft.Build.Framework" ExcludeAssets="Runtime" />
     <Reference Include="Microsoft.Build.Utilities.Core"  ExcludeAssets="Runtime" />
     <Reference Include="System.Reflection.Metadata" Condition="'$(TargetFramework)' == 'net46'" />

src/Components/Blazor/Build/src/targets/Blazor.MonoRuntime.targets

@@ -57,8 +57,8 @@
 
     <ItemGroup>
       <MonoWasmFile Include="$(DotNetWebAssemblyRuntimePath)*" />
-      <BlazorJSFile Include="$(BlazorJsPath)" />
-      <BlazorJSFile Include="$(BlazorJSMapPath)" />
+      <BlazorJSFile Include="$(BlazorJSPath)" />
+      <BlazorJSFile Include="$(BlazorJSMapPath)" Condition="Exists('$(BlazorJSMapPath)')" />
 
       <BlazorOutputWithTargetPath Include="@(MonoWasmFile)">
         <TargetOutputPath>$(BlazorRuntimeWasmOutputPath)%(FileName)%(Extension)</TargetOutputPath>

src/Components/Web.JS/.gitignore

@@ -1,3 +1,2 @@
 node_modules/
 dist/Debug/
-dist/Release/blazor.webassembly.js

src/Components/Web.JS/Microsoft.AspNetCore.Components.Web.JS.npmproj

@@ -21,6 +21,8 @@
       Private="false" />
   </ItemGroup>
 
+  <Target Name="GetTargetPath" />
+
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.targets))\Directory.Build.targets" />
 
 </Project>