Today we’re announcing the release of TypeScript 3.1!If you haven’t heard of TypeScript, it’s a language that builds on top of modern JavaScript and adds static type-checking. When you write TypeScript code, you can use a tool like the TypeScript compiler to remove type-specific constructs, and rewrite any newer ECMAScript code to something that older browsers & runtimes can understand. Additional
![Announcing TypeScript 3.1 | TypeScript](https://cdn-ak-scissors.b.st-hatena.com/image/square/3f7f217856cfbcc7f66ec857ff4225b9f96b62d9/height=288;version=1;width=512/https%3A%2F%2Fdevblogs.microsoft.com%2Ftypescript%2Fwp-content%2Fuploads%2Fsites%2F11%2F2018%2F08%2Ftypescriptfeature.png)