TypeScript 7 is here, and this one feels different.

The biggest change is not a new syntax feature. It is performance. TypeScript has been ported to a native Go-based implementation, bringing much faster builds, improved editor responsiveness, and better use of modern multi-core machines.

Some highlights:

TypeScript 7 is reported to be around 8x to 12x faster on full builds.

The new compiler uses native code speed and shared-memory multithreading.