Convert JS files to TS files

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading;
using Microsoft.Build.Evaluation;

namespace convertjstots
{
	internal class Program
	{
		private static string _basePath;

		private static Project _project;

		private static void Main(string[] args)
		{
			// load the project file
			var projectFile = "C:\\Code\\Test\\test.csproj";
			var directory = "C:\\Code\\Test\\js";
			_basePath = "C:\\Code\\Test\\";

			var collection = new ProjectCollection();
			collection.DefaultToolsVersion = "4.0";

			_project = collection.LoadProject(projectFile);

			ProcessDirectory(directory);

			_project.Save();

			Console.Read();
		}

		private static void ProcessDirectory(string path)
		{
			foreach (var dir in Directory.EnumerateDirectories(path))
				ProcessDirectory(dir);

			foreach (var fileName in Directory.GetFiles(path))
			{
				if (fileName.EndsWith(".js"))
				{
					var fileInfo = new FileInfo(fileName);

					var extensionlessFileName = fileInfo.Name.Replace(".js", string.Empty);

					if (!Directory.GetFiles(path, extensionlessFileName + ".ts").Any())
					{
						fileInfo.MoveTo(Path.Combine(path, extensionlessFileName + ".ts"));

						Thread.Sleep(100);

						_project.AddItem("TypeScriptCompile", Path.Combine(path, extensionlessFileName + ".ts").Replace(_basePath, string.Empty));

						var start = new ProcessStartInfo { WorkingDirectory = path, Arguments = extensionlessFileName + ".ts", FileName = "tsc" };

						Process.Start(start);

						var item = _project.GetItems("Content").FirstOrDefault(i => i.EvaluatedInclude == Path.Combine(path, extensionlessFileName + ".js").Replace(_basePath, string.Empty));

						if (item != null)
							_project.RemoveItem(item);

						_project.AddItem(
							"Content", 
							Path.Combine(path, extensionlessFileName + ".js").Replace(_basePath, string.Empty), 
							new List<KeyValuePair<string, string>>
							{
								new KeyValuePair<string, string>("DependentUpon", extensionlessFileName + ".ts")
							});

						Console.WriteLine("TS file " + extensionlessFileName + ".js");
					}
				}
			}
		}
	}
}