https://www.nuget.org/packages/StackExchange.Precompilation.Metaprogramming/
NuGet Gallery | StackExchange.Precompilation.Metaprogramming 4.7.0
Hooks into the csc and ASP.NET MVC pipeline to enable DNX-style metaprogramming in ASP.NET MVC 5 applications with StackExchange.Precompilation.Build
nuget gallerystackexchangemetaprogramming
https://learn.microsoft.com/en-us/previous-versions/aspnet/bb398860(v=vs.100)?redirectedfrom=MSDN
ASP.NET Precompilation Overview | Microsoft Learn
asp netoverviewmicrosoftlearn