TypeScript 5.4, a planned update to the strongly typed JavaScript variant from Microsoft, is now generally available. New capabilities in version 5.4 include preserved narrowing within function ...

Microsoft shipped the latest iteration of its type-infused superset of JavaScript, TypeScript 5.5, introducing inferred type predicates, control flow narrowing, JSDoc @import and other enhancements.

TypeScript 5.5, now in a release candidate, also features inferred type predicates, regular expression syntax checking, and performance and size optimizations. TypeScript 5.5, the latest version of ...

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. The plan was for TypeScript 5.8 to ...