$srcFiles = Get-ChildItem "./*.cs" | select FullName

$sb = [System.Text.StringBuilder]::new()

[void]$sb.AppendLine(@'
using System;
using System.Net;

'@)

foreach ($srcFile in $srcFiles)
{
    $lines = (Get-Content $srcFile.FullName -Raw).Split([Environment]::NewLine)
  
    foreach ($line in $lines)
    {
        if ($line -match '^[ \t]*using [a-zA-Z0-9_.]+;.*$')
        {
            continue;
        }

        [void]$sb.AppendLine($line);
    }
}

$code = $sb.ToString()
Add-Type -TypeDefinition $code -Language CSharp

[MyNamespace1.Program]::Main("")
Pause

#!/usr/bin/env -S dotnet fsi --exec
#load "Utils.fsx"
#r "nuget: FSharp.Data"
open type FSharp.Data.Http
let item = RequestString "https://rsdn.org/Forum/NewMsg.aspx?mid=8451450"
printfn $"message with id 8451450 has text '{item}'"

> open System;;
> DateTime.Now;;
val it: DateTime = 19.01.2023 8:21:21 {Date = 19.01.2023 0:00:00;
                                       Day = 19;
                                       DayOfWeek = Thursday;
                                       DayOfYear = 19;
                                       Hour = 8;
                                       Kind = Local;
                                       Microsecond = 354;
                                       Millisecond = 104;
                                       Minute = 21;
                                       Month = 1;
                                       Nanosecond = 300;
                                       Second = 21;
                                       Ticks = 638097132811043543L;
                                       TimeOfDay = 08:21:21.1043543;
                                       Year = 2023;}

/* 2> nul
@echo off
set WinDirNet=%WinDir%\Microsoft.NET\Framework
if exist "%WinDirNet%\v2.0.50727\csc.exe" set csc="%WinDirNet%\v2.0.50727\csc.exe"
if exist "%WinDirNet%\v3.5\csc.exe" set csc="%WinDirNet%\v3.5\csc.exe"
if exist "%WinDirNet%\v4.0.30319\csc.exe" set csc="%WinDirNet%\v4.0.30319\csc.exe"
if "%csc%" == "" ( echo .NET Framework not found! && echo. && pause && exit )
%csc% /nologo /out:"%~dpnx0.exe" "%~dpnx0"
if not "%ERRORLEVEL%" == "0" ( echo. && pause && exit )
cls
"%~dpnx0.exe" %*
del "%~dpnx0.exe"
exit
*/

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.IO;

public class Program { 
static void Main(string[] args)
{
       Console.Write("Hello, world");
}}

dotnet tool install -g dotnet-script

mkdir test
cd test

dotnet-script init

//run_timer.d
import std.datetime.stopwatch;
import std.stdio;
import std.process;

void main (string[] args) {
//    foreach(e; args) writeln("arg = ", e);
    auto sw = StopWatch(AutoStart.no);
    sw.start();
        auto dmd = execute(args[1 .. $]);
        writeln (dmd.status);
    sw.stop();

    long msecs = sw.peek.total!"msecs";
    writeln("msecs = ", msecs);
}

rdmd run_timer.d dotnet fsi --exec test.fsx

fake -s run helloworld.fsx

--exec Выход из FSI после загрузки файлов или выполнение скрипта .fsx, указанного в
командной строке

fake -s run helloworld.fsx

  <AssemblyName>dotnet</AssemblyName>
    <OutputType>Exe</OutputType>
    <StrongNameKeyId>MicrosoftAspNetCore</StrongNameKeyId>