Announcing TypeScript 5.1 Beta

April 18, 2023 Apr 18, 2023 04/18/23
Daniel Rosenwasser
Today we're announcing our beta release of TypeScript 5.1! To get started using the beta, you can get it through NuGet, or through npm with the following command: Here's a quick list of what's new in TypeScript 5.1! Easier Implicit Returns for undefined-Returning Functions In JavaScript, if a ...

Announcing TypeScript 5.0

March 16, 2023 Mar 16, 2023 03/16/23
Daniel Rosenwasser
Today we're excited to announce the release of TypeScript 5.0! This release brings many new features, while aiming to make TypeScript smaller, simpler, and faster. We've implemented the new decorators standard, added functionality to better support ESM projects in Node and bundlers, provided new ways for library authors to control generic ...

TypeScript’s Migration to Modules

March 9, 2023 Mar 9, 2023 03/9/23
authorsDaniel Rosenwasser, Jake Bailey
One of the most impactful things we've worked on in TypeScript 5.0 isn't a feature, a bug fix, or a data structure optimization. Instead, it's an infrastructure change. In TypeScript 5.0, we restructured our entire codebase to use ECMAScript modules, and switched to a newer emit target. What to Know Now, before we dive in, we want to set ...

Announcing TypeScript 5.0 RC

March 1, 2023 Mar 1, 2023 03/1/23
Daniel Rosenwasser
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, ...
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Announcing TypeScript 5.0 Beta

January 26, 2023 Jan 26, 2023 01/26/23
Daniel Rosenwasser
Today we're excited to announce our beta release of TypeScript 5.0! 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 bundlers, new ways for library authors to control generic inference, ...

Announcing TypeScript 4.9

November 15, 2022 Nov 15, 2022 11/15/22
Daniel Rosenwasser
Today we are excited to announce the availability of TypeScript 4.9! If you're not familiar with TypeScript, it's a language that builds on JavaScript by adding types and type-checking. Types can describe things like the shapes of our objects, how functions can be called, and whether a property can be null or undefined. TypeScript can check...

Announcing TypeScript 4.9 RC

November 1, 2022 Nov 1, 2022 11/1/22
Daniel Rosenwasser
Today we're excited to announce our Release Candidate (RC) of TypeScript 4.9. Between now and the stable release of TypeScript 4.9, 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 Here's...

Ten Years of TypeScript

October 1, 2022 Oct 1, 2022 10/1/22
Daniel Rosenwasser
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 ...

Announcing TypeScript 4.9 Beta

September 23, 2022 Sep 23, 2022 09/23/22
Daniel Rosenwasser
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: You can also get editor support by Here's a quick list of what's new in TypeScript 4.9! The satisfies Operator TypeScript developers are often faced with a...

Announcing TypeScript 4.8

August 25, 2022 Aug 25, 2022 08/25/22
Daniel Rosenwasser
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 ...