Today we’re excited to announce our Release Candidate of TypeScript 5.0! Between now and the stable release of TypeScript 5.0, we expect no further changes apart from critical bug fixes. This release brings many new features, while aiming to make TypeScript, smaller, simpler, and faster. We’ve implemented the new decorators standard, functionality to better support ESM projects in Node and bundler

Today is TypeScript’s birthday! But this birthday is a special one – 10 years ago today, on October 1st, 2012, TypeScript was unveiled publicly for the first time. The Early Days When TypeScript first debuted, there was a lot of skepticism – and understandably so. To some JavaScript users, a team trying to bring static types to JavaScript might have sounded like an evil plot or a joke. But the fea

Today we’re announcing our beta release of TypeScript 4.9! To get started using the beta, you can get it through NuGet, or- use npm with the following command: npm install -D typescript@beta You can also get editor support by Downloading for Visual Studio 2022/2019 Following directions for Visual Studio Code. Here’s a quick list of what’s new in TypeScript 4.9! The satisfies Operator Unlisted Prop

Today we’re excited to announce the release of TypeScript 4.8! If you’re not yet familiar with TypeScript, it’s a language that builds on JavaScript and adds syntax for types. These types let you put your expectations and assumptions into your code, and those assumptions can then be checked by the TypeScript type-checker. This checking can help avoid typos, calling uninitialized values, mixing up

Today we’re excited to announce the availability of TypeScript 4.7! If you’re not yet familiar with TypeScript, it’s a language that builds on JavaScript and adds syntax for types. Types help describe what kinds of values you’re working with and what kinds of functions you’re calling. TypeScript can use this information to help you avoid about mistakes like typos, missing arguments, or forgetting

Today we’re excited to announce the availability of TypeScript 4.3! If you’re not yet familiar with TypeScript, it’s a language that builds on JavaScript by adding syntax for static types. Tools like the TypeScript compiler can just erase TypeScript syntax, leaving you with clean readable JavaScript that works anywhere. So what’s that syntax adding if it just gets erased away? Well, when you add t

Hey folks, we’re happy to announce that a fresh re-write of the TypeScript Handbook is out of beta and is now our website’s primary resource for learning TypeScript! Read the handbook on Web / Epub / PDF In the last year, the TypeScript team has heavily focused on ramping up the scale, modernity and scope of our documentation. One of the most critical sections of our documentation is the handbook,

Today we’re excited to announce the release of TypeScript 4.2! For those who aren’t familiar with TypeScript, it’s an extension to JavaScript that adds static types and type-checking. With types, you can state exactly what your functions take, and what they’ll return. You can then use the TypeScript type-checker to catch lots of common mistakes like typos, forgetting to handle null and undefined,

Today we’re excited to announce our Release Candidate of TypeScript 4.2! Between now and the stable release of TypeScript 4.2, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or use npm with the following command: You can also get editor support by Downloading for Visual Studio 2019/2017 Following directions for Visual Studio C

Today we are making the Release Candidate (RC) of TypeScript 4.1 available. To get started using the RC, you can get it through NuGet, or use npm with the following command: You can also get editor support by Downloading for Visual Studio 2019/2017 Following directions for Visual Studio Code and Sublime Text. For this release, we have some exciting new features, new checking flags, editor producti

Today we are thrilled to announce the availability of TypeScript 4.0! This version of the language represents our next generation of TypeScript releases, as we dive deeper into expressivity, productivity, and scalability. If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by adding syntax for static types. The idea is that by writing down the types of your val

Hey folks, I'm happy to announce that the next iteration version of the TypeScript Website has launched on typescriptlang.org. The new version of the website was built out of a desire to make the documentation for TypeScript feel as expansive as its type-system, with a design that fits modern Microsoft styles. To get a sense of what people wanted, we reached out to the community about where they w

Today we’re excited to release the beta of the next major milestone in the TypeScript programming language: TypeScript 4.0. This beta takes us on our first step into TypeScript 4.0, and while it brings a new major version, don’t fret – there are no substantially larger breaking changes than usual. Our philosophy in evolving TypeScript has always been to provide an upgrade path that minimizes disru

The Definitely Typed repository on GitHub is now a regular fixture in GitHub’s annual Octoverse report as one of the top 10 repos with the most contributors. If you haven’t heard of Definitely Typed, it’s a repository that holds type declaration files (*.d.ts files) for thousands of JavaScript projects, and it’s likely you’ve seen the results of this repo in the form of the npm modules @types/some

Today we’re excited to announce the release of TypeScript 3.9! If you’re unfamiliar with TypeScript, it’s a language that builds on JavaScript by adding syntax for type declarations and annotations. This syntax can be used by the TypeScript compiler to type-check our code, and then output clean readable JavaScript that runs on lots of different runtimes. Static type-checking can tell us about erro

Today we’re announcing the availability of TypeScript 3.9 Beta! To get started using the beta, you can get it through NuGet, or use npm with the following command: You can also get editor support by Downloading for Visual Studio 2019/2017 Following directions for Visual Studio Code and Sublime Text. For this release our team been has been focusing on performance, polish, and stability. We’ve been

Today we’re proud to release TypeScript 3.8! For those unfamiliar with TypeScript, it’s a language that adds syntax for types on top of JavaScript which can be analyzed through a process called static type-checking. This type-checking can tell us about errors like typos and values that are potentially null and undefined before we even run our code. More than just that, that same type analysis can

Today we’re announcing the availability of TypeScript 3.8 Beta! This Beta release contains all the new features you should expect from TypeScript 3.8’s final release. To get started using the beta, you can get it through NuGet, or through npm with the following command: You can also get editor support by Downloading for Visual Studio 2019/2017 Following directions for Visual Studio Code and Sublim

We’re thrilled to announce the release of TypeScript 3.7, a release packed with awesome new language, compiler, and tooling features. If you haven’t yet heard of TypeScript, it’s a language based on JavaScript that adds static type-checking along with type syntax. Static type-checking lets us know about problems with our code before we try to run it by reporting errors if we do something questiona

Today we’re happy to announce the availability of our release candidate (RC) of TypeScript 3.3. Our hope is to collect feedback and early issues to ensure our final release is simple to pick up and use right away.To get started using the RC, you can get it through NuGet, or use npm with the following command: You can also get editor support by Downloading for Visual Studio 2017 (for version 15.2 o