Today we’re excited to announce the release of TypeScript 3.9!

If you’re unfamiliar with TypeScript, it’s a language that builds on JavaScript by adding syntax for type declarations and annotations. This syntax can be used by the TypeScript compiler to type-check our code, and then output clean readable JavaScript that runs on lots of different runtimes. Static type-checking can tell us about errors in our code before we even run it, or before we even save our files thanks to TypeScript’s rich editing functionality across editors. But beyond error-checking, TypeScript powers things like completions, quick fixes, and refactorings for both TypeScript and JavaScript in some of your favorite editors. In fact, if you already use Visual Studio or Visual Studio Code, you might already be using TypeScript when you write JavaScript code! So if you’re interested in learning more, check out our website!

#typescript #javascript #web-development