The TypeScript team recently announced version 3.1 of TypeScript, adding mappable tuple and array types and several other refinements.

Microsoft's open-source programming language TypeScript – the alter ego of JavaScript but with a type system – turns 10 years old this December. It's grown to become a go-to language for ...

Next TypeScript release, due February 25, will support a limited form of checking against conditional and indexed acces types in return statements.