Pick wwwroot/_content/ files from 3rd party Blazor library when publishing - visual-studio

Question

I have an ASP.NET core 5 project that references some 3rd party Blazor libraries.
When I publish the project, it includes a lot of static asset files in $publishDir/wwwroot/_content/LiraryName/ folder, which is slowing down deployment. I don't need them all.
Is it possible to configure, which files should be skipped while publishing?

Answer 1

There is an easier way:
Just use these:
<ItemGroup>
<Content Update="wwwroot\_content\LiraryName\*.*">
<CopyToPublishDirectory>Never</CopyToPublishDirectory>
</Content>
</ItemGroup>
Before using it, please first delete the publish folder.
================
Update 1
Solution One
1) add GeneratePathProperty="true" into the nuget package reference node to generate the msbuild property PkgBlazored_Toast to access the content of the nuget package like this:
<ItemGroup>
<PackageReference Include="Blazored.Toast" Version="3.1.2" GeneratePathProperty="true" />
</ItemGroup>
2) add this:
<Target Name="RemoveTheFiles" AfterTargets="ComputeFilesToPublish">-->
<ItemGroup>
<ResolvedFileToPublish Remove="$(PkgBlazored_Toast)\staticwebassets\*.*"></ResolvedFileToPublish>
</ItemGroup>
</Target>
Also, first,delete the previous publish folder and then run the publish.
Solution Two
1) use Delete Task:
<Target Name="RemoveTheFiles" AfterTargets="AfterPublish">
<PropertyGroup>
<Folder>$(PublishUrl)wwwroot\_content</Folder>
</PropertyGroup>
<RemoveDir Directories="$(Folder)"></RemoveDir>
</Target>

Answer 2

I have my NPM folder --> NpmJS inside wwwroot
Edit the csproj file like this:
Works like a charm.
<Target Name="PreBuild" BeforeTargets="PreBuildEvent">
<Exec Command="npm install" WorkingDirectory="wwwroot\NpmJS" />
<Exec Command="npm run build" WorkingDirectory="wwwroot\NpmJS" />
</Target>