TypeScript 7.0 Beta is Here — and It's Rewritten in Go. Here's What Actually Changed.

I've been watching the TypeScript Go port news since it first leaked, and I'll be honest — when they said "10x faster," I was ready to call marketing spin. Then I ran it on a real codebase.

It's fast. Like, uncomfortably fast. The kind of fast where you assume something must be broken.

TypeScript 7.0 Beta dropped on April 21st, and it's not your usual TypeScript release. This isn't "we added a few new types and fixed some edge cases." The entire compiler was ported from TypeScript (the language) to Go — and then they're calling the result TypeScript 7.0.

Let me break down what this actually means for you.

Wait, Why Go?