Helper class for runnsing new processes

ProcessRunner.cs

using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics;
using CSharpFunctionalExtensions;

namespace Common
{
    public class ProcessRunner
    {
        private const int PROCESS_TIMEOUT = 1000 * 60; // ms

        public Result<ImmutableList<string>, ImmutableList<string>> Run((string program, string args) command)
        {
            var (program, args) = command;
            var psi = new ProcessStartInfo(program, args)
            {
                ErrorDialog = false,
                UseShellExecute = false,
                RedirectStandardOutput = true,
                RedirectStandardError = true
            };

            var proc = Process.Start(psi);

            var stdOut = new List<string>();
            var stdErr = new List<string>();

            proc.OutputDataReceived += (sender, outputLine) =>
            {
                if (outputLine.Data != null) stdOut.Add(outputLine.Data);
            };
            proc.ErrorDataReceived += (sender, errorLine) =>
            {
                if (errorLine.Data != null) stdErr.Add(errorLine.Data);
            };

            proc.BeginErrorReadLine();
            proc.BeginOutputReadLine();

            proc.WaitForExit(PROCESS_TIMEOUT);

            return proc.ExitCode == ExitCodes.Success
                ? Result.Ok<ImmutableList<string>, ImmutableList<string>>(stdOut.ToImmutableList())
                : Result.Fail<ImmutableList<string>, ImmutableList<string>>(stdErr.ToImmutableList());
        }
    }
}