Standards proposal would allow annotations to be checked by external type checkers like TypeScript but treated as comments by the JavaScript engine. Microsoft is backing a proposal to bring optional ...

This proposal aims to enable developers to add type annotations to their JavaScript code, allowing those annotations to be checked by a type checker that is external to JavaScript. At runtime, a ...

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 building apps ...

Tom Warren is a senior editor and author of Notepad, who has been covering all things Microsoft, PC, and tech for over 20 years. Microsoft Excel used to only allow two types of data: text and numbers.