Optimized switch.cs

// Program
public static void Main(string[] args)
{
	int i = 0;
	while (i < args.Length)
	{
		string text = args[i];
		string text2 = text;
		if (text2 == null)
		{
			goto IL_133;
		}
		if (<PrivateImplementationDetails>{96D5B0F9-A04A-4E1C-9689-4ECDD3840125}.$$method0x6000001-1 == null)
		{
			Dictionary<string, int> expr_27 = new Dictionary<string, int>(8);
			expr_27.Add("howdy", 0);
			expr_27.Add("hello", 1);
			expr_27.Add("world", 2);
			expr_27.Add("what", 3);
			expr_27.Add("why", 4);
			expr_27.Add("who", 5);
			expr_27.Add("where", 6);
			expr_27.Add("when", 7);
			<PrivateImplementationDetails>{96D5B0F9-A04A-4E1C-9689-4ECDD3840125}.$$method0x6000001-1 = expr_27;
		}
		int num;
		if (!<PrivateImplementationDetails>{96D5B0F9-A04A-4E1C-9689-4ECDD3840125}.$$method0x6000001-1.TryGetValue(text2, out num))
		{
			goto IL_133;
		}
		switch (num)
		{
			case 0:
			{
				Console.WriteLine("0");
				break;
			}
			case 1:
			{
				Console.WriteLine("1");
				break;
			}
			case 2:
			{
				Console.WriteLine("2");
				break;
			}
			case 3:
			{
				Console.WriteLine("3");
				break;
			}
			case 4:
			{
				Console.WriteLine("4");
				break;
			}
			case 5:
			{
				Console.WriteLine("5");
				break;
			}
			case 6:
			{
				Console.WriteLine("6");
				break;
			}
			case 7:
			{
				Console.WriteLine("7");
				break;
			}
			default:
			{
				goto IL_133;
			}
		}
		IL_140:
		i++;
		continue;
		IL_133:
		Console.WriteLine("default");
		goto IL_140;
	}
}

Partial transform.js

JSIL.MakeStaticClass("Program", true, [], function ($) {
        $.Main = function (args) {
            var num = 0;
        __loop0__: 
            for (var i = 0; i < args.length; ++i) {
                var arg = args[i];
                switch (num) {
                    case 0: 
                        break;
                    case 1: 
                        break;
                    case 2: 
                        break;
                    case 3: 
                        break;
                    case 4: 
                        break;
                    case 5: 
                        break;
                    case 6: 
                        break;
                    case 7: 
                        break;
                    default: 
                        $asm02.System.Console.WriteLine("default");
                        break;
                }
            }
        };

    });