TypeScript 1.4 sneak peek: union types, type guards, and more
With TypeScript 1.3 out the door, we're focused on adding more type system and ECMAScript 6 features to TypeScript. Let's take a quick look at some of the new features you'll be able to use in the next release of TypeScript. All these features are live in the master branch on our GitHub repository if you'd like to check them out yourself today.&...