The point is that Typescript gives you the choice. You can add type definitions like Haxe, or just drop in your (untyped) JS library without any work and type i

The point is that Typescript gives you the choice. You can add type definitions like Haxe, or just drop in your (untyped) JS library without any work and type it later. In the latter case, Typescript gives you some typing for free whereas Haxe doesn't.