Daniel Rosenwasser

Senior Program Manager, TypeScript

Daniel is the program manager of the TypeScript team. He started on the team as an engineer, and has a strong interest in programming languages, compilers, and great developer tooling.

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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 ...
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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 ...

Announcing TypeScript 3.9 RC

April 28th, 2020
Today we're announcing the availability of TypeScript 3.9 RC, the release candidate of TypeScript 3.9. Between now and the final release, 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 3.9 Beta

March 27th, 2020
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 For this release our team been has been focusing on performance, polish, and stability. We've been working on speeding up ...
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Announcing TypeScript 3.8

February 20th, 2020
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 ...