Overall, Microsoft engineers spent over two years developing this functionality, Hejlsberg said. The company released the specification of TypeScript, as well as an open source compiler on the CodePlex repository. The company also developed a TypeScript plug-in for Visual Studio.
StaticScript's type annotation is flexible as well. Developers can add type annotations only where they want it, to their own code, or to specific libraries.
Sign up for Computerworld eNewsletters.