TypeScript 6.0 is the last release built on the JavaScript codebase. A new --stableTypeOrdering flag lets developers match TypeScript 7.0 behavior. TypeScript 7.0, written in Go, is "extremely close ...

Microsoft says TypeScript 7, announced July 8, brings native Go performance to VS Code, Visual Studio and other editors.

Build type-safe JavaScript applications in less time with Microsoft’s native port of TypeScript built with Go.