Announcing TypeScript 6.0
2026/04/07
"TypeScript 6.0 is a unique release in that we intend for it to be the last release based on the current JavaScript codebase." As announced last year, we are working on a new codebase for the TypeScript compiler and language service written in Go that takes advantage of the speed of native code and shared-memory multi-threading. This new codebase will be the foundation of TypeScript 7.0 and beyond. TypeScript 6.0 acts as the bridge between TypeScript 5.9 and 7.0. "As such, most changes in TypeScript 6.0 are meant to help align and prepare for adopting TypeScript 7.0."