- TypeScript. TypeScript is Microsoft’s entry into the fray. TypeScript is a lot more like CoffeeScript than it is Dart. TypeScript is a pet project of Microsoft’s Anders Hejlsberg. Anders was the chief architect behind both Borland’s Delphi and MS’s C#—so he clearly has the language chops to pull off a project like this. Shortly after TypeScript was introduced, it didn’t take too many hours for a bunch of negative comments to surface—many of which seem more motivated by politics than technical issues. Microsoft’s Web Essentials 2012 free download for Visual Studio 2012 provides some interesting support for both TypeScript and CoffeeScript.