Run Grunt Task in Visual Studio Release Build with a bat File

Originally posted on http://geekswithblogs.net/Aligned/archive/2014/08/19/run-grunt-task-in-visual-studio-release-build-with-a.aspx

1. Add a BeforeBuild in your csproj file. Edit the XML with a text editor.
   XML

   <Target Name="BeforeBuild">
     <Exec Condition="'$(Configuration)' == 'Release'" Command="script-optimize.bat" />
   </Target>
   

2. Create the script-optimize.bat:
   XML

   REM "%~dp0" maps to the directory where this file exists
   cd %~dp0\..\YourProjectFolder
   call npm uninstall grunt
   call npm uninstall grunt
   call npm install --cache-min 604800 -g grunt-cli
   call npm install --cache-min 604800
   
   grunt typescript requirejs copy less:compile less:mincompile

   This grunt command will compile typescript, run the requireJs optimizer, compile and minimize less.

3. Make it use the minified code when the Web.config compilation debug is set to false.
   XML

   <!-- These CustomCollectFiles actions are used so that 
           the Scripts-Release folder/files are included
           when publishing even though they are not project references -->
     <Target Name="CustomCollectFiles">
       <ItemGroup>
         <_CustomFiles Include="Scripts-Release\**\*" />
     </ItemGroup>
     </Target>

That should be all you need to get a Grunt task to minify and combine JS (plus other tasks) in Visual Studio Release build with debug = false.

This is a great video of Steve Sanderson talking about SPAs, npm, Knockout, Grunt, Gulp, etc. I highly recommend it.