TypeScript 7.0 Beta: Go-Based Rewrite Ships 10x Faster Type Checking
TypeScript Blog·high signal
Microsoft announces TypeScript 7.0 beta, the culmination of the Go rewrite that's been in progress for over a year. The compiler is 10x faster than TypeScript 6.0 thanks to native code speed and shared memory parallelism. The codebase was methodically ported (not rewritten), so type-checking logic is structurally identical to 6.0. Already in use in multi-million-line codebases inside and outside Microsoft. The TypeScript Native Preview VS Code extension provides immediate editor support.