TypeScript
The official blog of the TypeScript team.
Latest posts
Announcing TypeScript 7.0
Today we are proud to announce the availability of TypeScript 7, a 10x faster native port of TypeScript! Since its early days, TypeScript has promised to deliver on JavaScript that scales. By bringing strong type-checking and rich tooling to the world of JavaScript, TypeScript made it possible to build non-trivial high-quality apps across platforms. Last year, our team unveiled TypeScript's next step in scaling: making every part of the toolset an order of magnitude faster. The mission was a native port of TypeScript built in Go that could make the most of modern hardware. This port was done as faithfull...
Announcing TypeScript 7.0 RC
Today we are excited to announce the Release Candidate of TypeScript 7.0! If you haven't been following TypeScript 7.0's development, this release is significant in that it is built on a completely new foundation. Over the past year, we have been porting the existing TypeScript codebase from TypeScript (as a bootstrapped codebase that compiles to JavaScript) over to Go. With a combination of native code speed and shared memory parallelism, TypeScript 7.0 is often about 10 times faster than TypeScript 6.0. To get the new compiler, you can just install it from the package on npm, just like with any other r...
Announcing TypeScript 7.0 Beta
Today we are absolutely thrilled to announce the release of TypeScript 7.0 Beta! If you haven't been following TypeScript 7.0's development, this release is significant in that it is built on a completely new foundation. Over the past year, we have been porting the existing TypeScript codebase from TypeScript (as a bootstrapped codebase that compiles to JavaScript) over to Go. With a combination of native code speed and shared memory parallelism, TypeScript 7.0 is often about 10 times faster than TypeScript 6.0. Don't let the "beta" label fool you - you can probably start using this in your day-to-day wor...
Announcing TypeScript 6.0
Today we are excited to announce the availability of TypeScript 6.0! If you are not familiar with TypeScript, it's a language that builds on JavaScript by adding syntax for types, which enables type-checking to catch errors, and provide rich editor tooling. You can learn more about TypeScript and how to get started on the TypeScript website. But if you're already familiar with the language, you can get TypeScript 6.0 through npm with the following command: 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 (wit...
Announcing TypeScript 6.0 RC
Today we are excited to announce the Release Candidate (RC) of TypeScript 6.0! To get started using the RC, you can get it through npm with the following command: 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 (with recent updates here), 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 will be ...
Announcing TypeScript 6.0 Beta
Today we are announcing the beta release of TypeScript 6.0! To get started using the beta, you can get it through npm with the following command: 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 (with recent updates here), 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 will be the immediate pre...
Progress on TypeScript 7 – December 2025
Earlier this year, the TypeScript team announced that we've been porting the compiler and language service to native code to take advantage of better raw performance, memory usage, and parallelism. This effort (codenamed "Project Corsa", and soon "TypeScript 7.0") has been a significant undertaking, but we've made big strides in the past few months. We're excited to give some updates on where we are, and show you how "real" the new TypeScript toolset is today. We also have news about our upcoming roadmap, and how we're prioritizing work on TypeScript 7.0 to drive our port to completion. Editor Support and L...
Announcing TypeScript 5.9
Today we are excited to announce the release of TypeScript 5.9! If you're not familiar with TypeScript, it's a language that builds on JavaScript by adding syntax for types. With types, TypeScript makes it possible to check your code to avoid bugs ahead of time. The TypeScript type-checker does all this, and is also the foundation of great tooling in your editor and elsewhere, making coding even easier. If you've written JavaScript in editors like Visual Studio and VS Code, TypeScript even powers features you might already be using like completions, go-to-definition, and more. You can learn more about Type...
Announcing TypeScript 5.9 RC
Today we are excited to announce the Release Candidate (RC) of TypeScript 5.9! To get started using the Release Candidate, you can get it through npm with the following command: Let's take a look at what's new in TypeScript 5.9! What's New Since the Beta? A few reported fixes have been made since the 5.9 beta, including the restoration of to the DOM library. Additionally, we have added a section about Notable Behavioral Changes. Minimal and Updated For a while, the TypeScript compiler has supported an flag that can create a within the current directory. In the l...