Daniel Rosenwasser

Good news for programmers who managed to inflate their titles in the last few decades. www.washingtonpost.com/technology/i...

🚀 The latest VS Code release makes the Copilot SDK-based harness the default for new sessions, adds model comparisons, and brings a file list to multi-file diffs. 🧵 Here’s what’s new: code.visualstudio.com/updates/v1_143

Some speed & memory improvements you'll see with TypeScript 7.1 Beta. We're hoping to land more before RC & stable.

TypeScript 7.1 Beta is now available! Now with a preview API, content mapper support, new features, and some great optimizations. Give it a try and give us some feedback!

✨ VS Code’s UI is evolving, shaped by developer feedback! Explore the modernized interface, with refined tabs, more consistent layouts, and new ways to customize your workspace. 🔗 Read the blog: code.visualstudio.com/blogs/2026/1...

🚀 The latest VS Code release brings interactive canvases for agent workflows, chat handoffs without losing context, and new ways to edit Markdown. 🧵 Here’s what’s new: code.visualstudio.com/updates/v1_142

📝 Explore new ways to edit Markdown in VS Code! Paste images directly into your document, rename file links throughout your content, navigate headings with Outline and breadcrumbs, and copy code blocks without accidentally editing them.

🧠 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...

🚀 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

🎬 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

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...

🚀 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

🚀 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

this'll be exciting to a very specific kind of person github.com/microsoft/Ty...

🎬 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...

🍿 The Story of VS Code premieres today! 🔔 Join us for the world premiere at 8:00 AM PT: aka.ms/the-story-of...

🚀 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

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

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

🚀 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! 💙

This was a really fun chat with @joshuakgoldberg.com. Thanks for having me @softwaredaily.bsky.social!

I love talking to Daniel whenever possible - and especially about the future of TypeScript!

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...

🚀 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

Ember now has preliminary TS7 support ~ via the content-mappers feature that merged in TS last week Testers wanted! (requires TS Nightly)

🚀 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?...

it's happened

💪🏽 Control your Android & iOS apps directly in VS Code with Mobile Canvas extension!

My editor using mdx-content-mapper is now showing TypeScript info for frontmatter and code blocks.

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! 💖

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. 🧵

📣 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...

🌐 Local HTML previews now reload automatically when the file changes on disk. Toggle auto-reload per tab or set it as the default.

TypeScript, now downloaded... 1G a month?

notes.jordanscales.com/coffee

📄 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.

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

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.

📝 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.

🚀 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: