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Daniel Rosenwasser

@danr.bsky.social
2.3K followers 601 following 160 posts

TypeScript Product Manager and TC39 rep working on JavaScript standards. Enthusiast of compilers, dev tools, language VMs/runtimes.

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Reposted by Daniel Rosenwasser
Visual Studio Code @vscode.dev · 9h
🧠 HydraFusion is now available in VS Code as a Research Preview. Instead of relying on a single model, HydraFusion orchestrates multiple models and workflows to tackle coding tasks. Give it a try today! 🚀 aka.ms/VSCode/Hydra...
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Reposted by Daniel Rosenwasser
Visual Studio Code @vscode.dev · 7h
🚀 The latest VS Code release makes it easier to work across repositories and worktrees and delegate tasks to remote agent hosts. 🧵 Here’s what’s new: code.visualstudio.com/updates/v1_140
code.visualstudio.com
Visual Studio Code 1.140
Learn what's new in Visual Studio Code 1.140
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Daniel Rosenwasser @danr.bsky.social · 30/09/2026
This happened. In the United States. In 2014.
A photo of Macklemore performing Thrift Shop - a song about saving money while shopping in a thrift store - while dressed as a racist racist caricature of a Jewish man.
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Visual Studio Code @vscode.dev · 29/09/2026
🎬 How did VS Code make language support easier to build across editors? Explore the story behind language servers and the common protocol that helped shape the VS Code experience. 🍿 Watch The Story of VS Code: www.youtube.com/watch?v=kHL3... #vscode #storyofvscode
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Daniel Rosenwasser @danr.bsky.social · 17/09/2026
Oh you're interested in compilers? We have a new API that'll get you hooked on distributed systems.
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TypeScript @typescriptlang.org · 17/09/2026
A new documentary about @vscode.dev is out! 🎬🎞️🍿 Check out The Story of VS Code, the story of the editor that brought the TypeScript experience to everyone! www.youtube.com/watch?v=kHL3...
youtube.com
The Story of VS Code | Official Documentary
YouTube video by Visual Studio Code
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Visual Studio Code @vscode.dev · 16/09/2026
🚀 The latest VS Code release brings new ways to work with agents, move between environments, and keep your sessions organized. 🧵 Here’s what’s new: aka.ms/VSCode/138 code.visualstudio.com/updates/v1_138
code.visualstudio.com
Visual Studio Code 1.138
Learn what is new in Visual Studio Code 1.138
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Reposted by Daniel Rosenwasser
Visual Studio Code @vscode.dev · 09/09/2026
🚀 The latest @code release brings new ways to automate recurring work, continue quick chats in a workspace, and work with GitHub without leaving the Agents window. 🧵 Here’s what’s new: code.visualstudio.com/updates/v1_137
code.visualstudio.com
Visual Studio Code 1.137
Learn what's new in Visual Studio Code 1.137
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Reposted by Daniel Rosenwasser
Jake Bailey @jakebailey.dev · 04/09/2026
this'll be exciting to a very specific kind of person github.com/microsoft/Ty...
github.com
Strongly type file paths by jakebailey · Pull Request #64159 · microsoft/TypeScript
This is a wacky change I've wanted to try out for a while and finally started screwing around with with copilot. Right now (and in Strada), we have just two kinds of paths: string - 🤷 Path - a...
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Reposted by Daniel Rosenwasser
Visual Studio Code @vscode.dev · 04/09/2026
🎬 The Story of VS Code is out now! From the first prototypes to the future of coding, discover the story behind VS Code. Watch now, and as always, happy coding! 💙 aka.ms/the-story-of...
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Reposted by Daniel Rosenwasser
Visual Studio Code @vscode.dev · 04/09/2026
🍿 The Story of VS Code premieres today! 🔔 Join us for the world premiere at 8:00 AM PT: aka.ms/the-story-of...
youtube.com
The Story of VS Code | Official Documentary
Erich Gamma once called VS Code an overnight success 10 years in the making. Those 10 years were pretty eventful. Before becoming one of the most widely used developer tools in the world, VS Code…
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Reposted by Daniel Rosenwasser
Visual Studio Code @vscode.dev · 02/09/2026
🚀 The latest VS Code release brings new ways to work with pull requests, agents, and related chats. 🎬 This week, we’re premiering The Story of VS Code on September 4. 🧵 Here’s what’s new: aka.ms/VSCode/136
aka.ms
VS Code 1.136
New release
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Visual Studio Code @vscode.dev · 01/09/2026
The Story of VS Code | Official Trailer 🎥 Watch The Story of VS Code on Friday, September 4th at 8am PT on the VS Code YouTube channel. 👉🏽 Subscribe to the VS Code YouTube channel to be notified as soon as the documentary drops: aka.ms/the-story-of... #vscode #storyofvscode
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Reposted by Daniel Rosenwasser
GitHub @github.com · 01/09/2026
GitHub wants to learn about the tools, product settings, and personal adaptations developers use to do their best work. You don't need to identify as someone with disabilities or already consider yourself an accessibility-tool user to participate. Respond by 9/30 ⬇️ gh.io/2026-accesscats-survey
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Visual Studio Code @vscode.dev · 31/08/2026
🚀 August brought a lot of updates to VS Code! Some highlights: 📄 Review Markdown diffs while keeping the document editable 🦆 Get a second opinion on agent work with /rubber-duck 🌐 Auto-reload HTML files 🎙️ Dictate prompts in multiple languages 🔗 aka.ms/VSCode/chang... Happy coding! 💙
aka.ms
GitHub Copilot in VS Code, August 2026 releases - GitHub Changelog
This changelog covers VS Code v1.132 through v1.135, shipped throughout August 2026. These releases make it easier to organize agent sessions, review changes, and navigate long conversations. Agent Ho...
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Daniel Rosenwasser @danr.bsky.social · 27/08/2026
This was a really fun chat with @joshuakgoldberg.com. Thanks for having me @softwaredaily.bsky.social!
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Josh Goldberg @joshuakgoldberg.com · 27/08/2026
I love talking to Daniel whenever possible - and especially about the future of TypeScript!
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Software Engineering Daily @softwaredaily.bsky.social · 27/08/2026
Daniel Rosenwasser is the Principal Product Manager of @typescriptlang.org at @microsoft.com. He joins @joshuakgoldberg.com to discuss TypeScript 7, the new API and IPC boundary, AI’s impact on type checking, and more. @danr.bsky.social softwareengineeringdaily.com/podcasts/typ...
softwareengineeringdaily.com
TypeScript 7 and What Comes Next - Software Engineering Daily
Daniel Rosenwasser is the Principal Product Manager of TypeScript at Microsoft. He joins Josh Goldberg to discuss TypeScript 7, the new API and IPC boundary, and AI’s impact on type checking.
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Visual Studio Code @vscode.dev · 26/08/2026
🚀 The latest VS Code release brings new ways to work with agents and get more from agent sessions. 🧵 Here’s what’s new: code.visualstudio.com/updates/v1_135
code.visualstudio.com
Visual Studio Code 1.135
Learn what's new in Visual Studio Code 1.135
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NullVoxPopuli @nullvoxpopuli.com · 26/08/2026
Ember now has preliminary TS7 support ~ via the content-mappers feature that merged in TS last week Testers wanted! (requires TS Nightly)
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Visual Studio Code @vscode.dev · 20/08/2026
🚀 Discover Agent Host in VS Code and see how your agent sessions persist across projects and run across multiple environments. From VS Code to the web and across machines, your sessions stay in sync wherever you work. 🧵 Check out the resources below 👇 youtu.be/k91ejc3G1YM?...
youtu.be
Agent Host: Your Sessions, Anywhere You Go
YouTube video by Visual Studio Code
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Jake Bailey @jakebailey.dev · 20/08/2026
it's happened
Migrate repo to TypeScript 7- #63763
#63763
Merged
microsoft:main
jakebailey:main-ts7
2 minutes ago
+2,928,712
-6,073,031
Lines changed: 2928712 additions & 6073031 deletions
Conversation7 (7)
Commits2495 (2495)
Checks23 (23)
Files changed3000+ (3000+)
Conversation
@jakebailey
Jake Bailey (jakebailey)
4 hours ago
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Visual Studio Code @vscode.dev · 17/08/2026
💪🏽 Control your Android & iOS apps directly in VS Code with Mobile Canvas extension!
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Remco Haszing @remcohaszing.nl · 17/08/2026
My editor using mdx-content-mapper is now showing TypeScript info for frontmatter and code blocks.
An MDX file with two JavaScript code blocks. One is hovered and shows information about the code. The other highlights a type error.An MDX file with YAML frontmatter data and a variable named frontmatter. Hover information for the frontmatter variable shows the TypeScript type of the frontmatter data.
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Remco Haszing @remcohaszing.nl · 16/08/2026
I just published an initial draft of an MDX content mapper. Content mappers are a new type of plugin system for an upcoming version of TypeScript that will allow you to type check MDX, Vue, Astro, etc. The approach is inspired by, but doesn’t use Volar. Thanks @andrewbran.ch for working on this! 💖
github.com
GitHub - remcohaszing/mdx-content-mapper: A TypeScript content mapper for MDX content
A TypeScript content mapper for MDX content. Contribute to remcohaszing/mdx-content-mapper development by creating an account on GitHub.
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Reposted by Daniel Rosenwasser
Andrew Branch @andrewbran.ch · 15/08/2026
If you’re not stalking TypeScript PRs, you might be surprised how much you can do with the API in nightlies (and even in 7.0 stable), so here’s a tiny demo that I think hits some of the highlights. 🧵
A package.json in VS Code after npm installing typescript@next
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Visual Studio Code @vscode.dev · 11/08/2026
📣 MAI-Code-1.1-Flash is now available in VS Code, featuring native vision support, improved coding quality, and 73% lower pricing. Give it a try! github.blog/changelog/20...
github.blog
MAI-Code-1.1-Flash available in GitHub Copilot - GitHub Changelog
MAI-Code-1.1-Flash, Microsoft’s latest small-tier coding model, is now rolling out in GitHub Copilot. Building on MAI-Code-1-Flash, it adds native vision support for image understanding and delivers i...
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Visual Studio Code @vscode.dev · 12/08/2026
🌐 Local HTML previews now reload automatically when the file changes on disk. Toggle auto-reload per tab or set it as the default.
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Jake Bailey @jakebailey.dev · 12/08/2026
TypeScript, now downloaded... 1G a month?
TypeSCript

CI | passing
npm package | 7.0.2
downloads | 1G/month
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jordan @jdan.me · 08/08/2026
notes.jordanscales.com/coffee
notes.jordanscales.com
I recently sat down for coffee with one of my oldest friends in the industry.
I recently sat down for coffee with one of my oldest friends in the industry. “How’s everything going?” I asked, “Crazy times right?” “We’re up to 1 million...
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Reposted by Daniel Rosenwasser
Visual Studio Code @vscode.dev · 05/08/2026
📄 Review rendered Markdown diffs without leaving the editor. Switch between text diffs and the hybrid Markdown editor with diff annotations. Available as an experimental feature.
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Daniel Rosenwasser @danr.bsky.social · 05/08/2026
*hacker voice* I'm in
The screen at Gophercon
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Ryan Cavanaugh @searyanc.dev · 05/08/2026
I'll be at GopherCon in Seattle today and tomorrow, working the morning shift at the Microsoft booth. Come say hi! And don't miss @jakebailey.dev's talk later today
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David Sherret @dsherret.dev · 30/07/2026
ts-ast-viewer.com now supports TypeScript 7 along with nightly builds of the typescript-go repository. It's not selected by default, but available in the dropdown.
Dropdown menu showing a TypeScript 7.0.2 selection on ts-ast-viewer.com
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Visual Studio Code @vscode.dev · 29/07/2026
📝 Work on Markdown files and agent feedback in one place. The new hybrid Markdown editor in the Agents window lets you edit in place, add comments for the agent to act on, and switch views with Reopen Editor With when needed.
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Visual Studio Code @vscode.dev · 29/07/2026
🚀 See what your subagents are doing in real time, use built-in dictation across VS Code, and streamline docs with the hybrid Markdown editor. 🧵 Here's what's new in the latest VS Code release:
Visual Studio Code release announcement graphic featuring the blue VS Code logo centered on a dark, textured background. Below the logo, large white text reads “VS Code v1.131,” with smaller text underneath that says “New release.” The design uses a minimalist, high-contrast layout with Microsoft branding colors.
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TypeScript @typescriptlang.org · 28/07/2026
Have you been using TypeScript 7? @ahejlsberg.bsky.social shows off what 10x faster build & editing experiences look like with @vscode.dev!
youtube.com
TypeScript 7 Is Here (And It's 10× Faster)
YouTube video by Microsoft Developer
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Pier Fumagalli @pier.fumagalli.org · 25/07/2026
Today’s Typescript 7 daily release finally includes my contribution to support “emit” via API! Right before the weekend, so I can waste it playing around with it 😛 Thanks @andrewbran.ch tor including it! npmx.dev/package-code...
npmx.dev
Code - typescript@7.1.0-dev.20260725.1 - npmx
Browse source code for typescript@7.1.0-dev.20260725.1
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Visual Studio Code @vscode.dev · 24/07/2026
📣 Claude Opus 5 is now rolling out in VS Code. Give it a try! github.blog/changelog/20...
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Visual Studio Code @vscode.dev · 22/07/2026
🚀 Spend less time on approvals, review changes faster, and get more insight into your chats. 🧵 Here's what's new in the latest VS Code release:
Visual Studio Code (VS Code) logo in blue centered on a dark background. Below the logo, large white text reads “VS Code v1.130” and smaller text underneath reads “New release.” The design resembles an announcement graphic for the latest VS Code release.
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Artem Zakharchenko @kettanaito.com · 21/07/2026
TypeScript 7.0 is incredible. I didn't even know type checking/generation took that much time in my build. Now it's 3-4x faster. Highly recommend updating.
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Jake Bailey @jakebailey.dev · 21/07/2026
Am I sick or procrastinating? You decide Anyway I made the Go compiler twice as fast at compiling the TS checker package go-review.googlesource.com/c/go/+/803462
go-review.googlesource.com
Gerrit Code Review
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Jake Bailey @jakebailey.dev · 19/07/2026
Soo I hit the button to release TS 7 then swiftly went out of office for vacation 😅 How's it going for everyone? Hopefully speedy speedy good
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Chris Krycho @chriskrycho.com · 15/07/2026
Thanks to lots of work preparing and tracking the preview builds for most of the year 2026… Vanta’s upgrade to #TypeScript v7 was basically trivial! I made one small change for a change (an improvement!) to inference that landed between our last nightly mid-June, and that was it. ✅ Feels good!
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Chris Krycho @chriskrycho.com · 08/07/2026
This is a really big deal. For us at Vanta, the speedup was a bit less than the highest values some teams have seen (3–5×), but let me tell you: 3–5× is still a very big deal for our CI times, and the improvement to editor performance is night and day.
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Russ Cox @swtch.com · 08/07/2026
TypeScript is now officially written in Go.
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npm @npmjs.com · 08/07/2026
npm v12 is now generally available. npm install now makes install scripts, Git, and remote-URL dependencies opt-in by default. We're also retiring npm 2FA-bypass GAT: no account management (early Aug 2026), no direct publishing (~Jan 2027). More info at github.blog/changelog/20...
github.blog
npm install-time security and GAT bypass2fa deprecation - GitHub Changelog
npm v12 is now generally available and tagged latest. This major release turns on the install-time security defaults we announced in June, and it’s also where we begin a deprecation…
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Visual Studio Code @vscode.dev · 08/07/2026
⚡ VS Code just shipped a big wave of GitHub Copilot upgrades! 🌐 Build and validate web apps with browser agent tools 🤖 Manage parallel agent workflows with the Agents window (Preview) 🎓 New VS Code Learn courses, and much more. 📖 Read the full changelog: aka.ms/VSCode/chang... Happy coding! 💙
Promotional graphic for GitHub Copilot in Visual Studio Code June 2026 releases. The image features a dark background with a subtle grid pattern and a large green glowing circle containing the GitHub Copilot logo silhouette. Centered white text reads “GitHub Copilot in VS Code June 2026 releases,” with a “NEW RELEASE” badge displayed below. The design uses a dark theme with green accents, reflecting the Visual Studio Code and GitHub Copilot branding.
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Savannah Ostrowski @savannah.dev · 08/07/2026
i've actually decided to like typescript in the last year or so! good language! great even! maybe even my second favourite! go use typescript 7! go tell the typescript team they rock!
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Samuel @samuel.fm · 08/07/2026
look whose compile times just got 8.7x faster! 🏎️💨
Compile times between typescript 6 & 7
vscode, sentry, bluesky, playwright, tldraw are all listed, with bluesky going from 24.3s to 2.8s
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