Support .NET Core

[joshcangit]

Requirements for Adding, Changing, or Removing a Feature

• Fill out the template below. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• The pull request must contribute a change that has been endorsed by the maintainer team. See details in the template below.
• The pull request must update the test suite to exercise the updated functionality. For guidance, please see https://flight-manual.atom.io/hacking-atom/sections/writing-specs/.
• After you create the pull request, all status checks must be pass before a maintainer reviews your contribution. For more details, please see https://github.com/atom/.github/tree/master/CONTRIBUTING.md#pull-requests.

Issue or RFC Endorsed by Atom's Maintainers

Description of the Change

The change use different commands for Linux.
Mainly, depending on .NET Core.

For C#, dotnet is used instead of mono.

Might want to change csc to dotnet csc when that becomes available.

For C# scripts, dotnet script is used instead of scriptcs.

Might want to change to dotnet csi when that beomes available.

For F# scripts, dotnet fsi is used instead of fsharpi

Alternate Designs

I haven't made checks which may need the lookpath Node.js package.
That is to check maybe if mono or dotnet is installed.

Possible Drawbacks

The dotnet script seems to be only in user directory.
That may mean .csx won't work outside the user environment.

Verification Process

I use certain files to test this.

• C# example

using System;

namespace HelloWorld
{
  class Program
  {
    static void Main(string[] args)
    {
      Console.WriteLine("Hello World!");
    }
  }
}

• C# script

//usr/bin/env dotnet script "$0" "$@";exit $?

var fw = System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription;
var arch = System.Runtime.InteropServices.RuntimeInformation.ProcessArchitecture;
Console.WriteLine($"Hello world ({fw}, {arch})");

• F# script

//usr/bin/env dotnet fsi "$0" "$@";exit $?

printfn "Hello world!"

Release Notes