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

TypeScript 3.5, the latest version of Microsoft’s popular typed superset of JavaScript, is now available in a production release. The update adds optimizations for type-checking, addressing a ...

Microsoft delivered TypeScript 1.4, the latest version of their JavaScript language superset. The new version adds union types and template strings. Also new is a ECMAScript 6 target mode.

Microsoft announced TypeScript 4.5 RC, which includes Nightly-Only ECMAScript Module Support in Node.js, and more.

Microsoft shipped TypeScript 5.8 with improved type checking in some scenarios, but thorny problems caused the dev team to delay related work to the next release.

Less than two weeks after publishing the TypeScript 2.8 Release Candidate, Microsoft has officially launched it into general availability, bringing conditional types and more.