TypeScript 4.8 Beta Release: Key Features and Enhancements
TypeScript 4.8 beta, released June 21 2022, adds Stage‑3 decorator groundwork, tighter strict‑null narrowing, more precise template‑literal inference, disables binding‑pattern inference, warns literal === comparisons, and boosts watch/incremental/build performance, while introducing breaking changes to lib.d.ts and JSDoc type imports.