Daniel Rosenwasser

Senior Program Manager, TypeScript

Daniel Rosenwasser is the program manager of the TypeScript team. He has a passion for programming languages, compilers, and great developer tooling.

Post by this author

Announcing TypeScript 4.2

February 23rd, 2021
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 ...

Announcing TypeScript 4.2 RC

February 11th, 2021
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 ...

Announcing TypeScript 4.2 Beta

January 12th, 2021
Today we're excited to announce the availability of TypeScript 4.2 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 Let's take a look at what's in store for TypeScript 4.2! Leading/Middle Rest Elements in Tuple Types In ...

Announcing TypeScript 4.1

November 19th, 2020
Today we're proud to release TypeScript 4.1! 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. ...

Announcing TypeScript 4.1 RC

November 3rd, 2020
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 For this release, we have some exciting new features, new checking flags, editor productivity updates, and speed ...

Announcing TypeScript 4.1 Beta

September 18th, 2020
Today we're announcing the availability of TypeScript 4.1 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 For this release, we have some exciting new features, new checking flags, editor productivity updates, and speed ...

Announcing TypeScript 4.0

August 20th, 2020
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 ...

Announcing TypeScript 4.0 RC

August 6th, 2020
Today we're announcing our release candidate of TypeScript 4.0. While this RC brings us closer to a new major version of TypeScript, don't fret - there are no larger breaking changes than usual. Our philosophy in evolving TypeScript has always been to provide an upgrade path that minimizes disruptive breaking changes while still giving ...

Announcing TypeScript 4.0 Beta

June 26th, 2020
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 ...

Announcing TypeScript 3.9

May 12th, 2020
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 ...