TypeScript

Announcing TypeScript 5.3 Beta

October 3, 2023 Oct 3, 2023 10/3/23

Daniel Rosenwasser

Today we are excited to announce the availability of TypeScript 5.3 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here's a quick list of what's new in TypeScript 5.3! Import Attributes Stable Support resolution-mode in Import Types switch (...

Announcing TypeScript 5.2

August 24, 2023 Aug 24, 2023 08/24/23

Daniel Rosenwasser

Today we're excited to announce the release of TypeScript 5.2! If you're not familiar with TypeScript, it's a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null ...

Announcing TypeScript 5.2 RC

August 9, 2023 Aug 9, 2023 08/9/23

Daniel Rosenwasser

Today we're excited to announce our Release Candidate of TypeScript 5.2! Between now and the stable release of TypeScript 5.2, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here's a quick list ...

Announcing TypeScript 5.2 Beta

June 30, 2023 Jun 30, 2023 06/30/23

Daniel Rosenwasser

Today we are excited to announce the availability of TypeScript 5.2 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here's a quick list of what's new in TypeScript 5.2! using Declarations and Explicit Resource Management Decorator Metadata ...

Announcing TypeScript 5.1

June 1, 2023 Jun 1, 2023 06/1/23

Daniel Rosenwasser

Today we're excited to announce the release of TypeScript 5.1! If you're not yet familiar with TypeScript, it's a language that builds on JavaScript by adding constructs called types. These types can describe some details about our program, and can be checked by TypeScript before they're compiled away in order to catch possible typos, logic ...

Announcing TypeScript 5.1 RC

May 18, 2023 May 18, 2023 05/18/23

Daniel Rosenwasser

Today we're excited to announce our Release Candidate of TypeScript 5.1! Between now and the stable release of TypeScript 5.1, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here's a quick list ...

Introducing Deopt Explorer

May 12, 2023 May 12, 2023 05/12/23

Ron Buckton

Over the past few months, during the lead-up to the TypeScript 5.0 beta, our team spent a good portion of our time looking for ways to improve the performance of our compiler so that your projects build faster. One of the ways we improved was by looking into an oft overlooked aspect of many JavaScript VMs: inline caching. A Brief Primer on ...

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: npm install -D typescript@beta Here's a quick list of what's new in TypeScript 5.1! Easier Implicit Returns for undefined-Returning Functions Unrelated Types for Getters and...

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

Daniel 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 ...