MSBuild
In the following we use after targets:
<?xml version="1.0" encoding="utf-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<WebProj>frontend</WebProj>
</PropertyGroup>
<Target Name="w" DependsOnTargets="">
<Exec Command="npm run build" WorkingDirectory="$(WebProj)"/>
</Target>
<Target Name="w-c" AfterTargets="w">
<ItemGroup>
<devFiles Include="$(WebProj)\build\dev\*"/>
</ItemGroup>
<Copy SourceFiles="@(devFiles)" DestinationFolder="\\hostname\c$\inetpub\wwwroot\proj_name\" />
</Target>
</Project>