Daniel Rosenwasser

What kinds of things are you hitting there? Stale errors? Error popups?

console.log("Hello, World!");

Follow for updates on every new release of @vscode.dev!

Some pretty awesome improvements in 1.26 for compiling/testing typescript-go.

With a clean build/test cache, running the full test suite used to take 3m45s, but now takes just 2m10s.

A line chart showing many lines, each representing the time take to type check a package, all decreasing over a one-month span.

Our tsgo adoption at Vanta has been pretty high-impact. Everything is so, so much faster now.

TypeScript 6.0 Beta is out 🎉

🔶 Temporal
🔶 Map#getOrInsert
🔶 RegExp.escape
🔶 #/ prefix for Package Imports

New defaults!
🔶 --target=ES2025
🔶 "use strict"
🔷 --strict

Deprecations!
🗑️ baseUrl, outFile
🗑️ import assertions
🗑️ `module` namespaces
🗑️ module: amd
🗑️ moduleResolution: node
🗑️ target: ES5

Made a few updates to the post - specifically:

- es2025 target
- new library additions/updates
- deprecation of node10

bsky.app/profile/type...

Announcing TypeScript 6.0 Beta - TypeScript Today we are announcing the beta release of TypeScript 6.0! To get started using the beta, you can get it through npm with the following command: npm install -D typescript@beta TypeScript 6.0 is a uni...

TypeScript 6.0 beta is now published!

This release brings

- inference improvements for functions
- updates to package.json 'imports'
- the Temporal APIs
- alignments for the upcoming TypeScript 7.0
- & more!

Try it today!

devblogs.microsoft.com/typescript/a...

reddit comment with the contents "i've been waiting for typescript 6, hopefully it fixes the annoying issues i've been having with 5, specifically the whole module resolution thing"

Probably as specific as anyone really needs to get

"You know, I actually don't hate it anymore. It's actually pretty good."

Glowing endorsements from my Python friends. 🥰

Introduce ES2025 target & Add missing ScriptTargetFeatures by petamoriken · Pull Request #63046 · microsoft/TypeScript Fixes #61735 This PR includes the addition of 2 type files: es2025.regexp.d.ts es2025.intl.d.ts Related issues and (stalled) PRs ES2025 RegExp.escape (es2025.regexp.d.ts) Closes #61321 Closes #62...

TypeScript excitement 😉

Congrats to @moriken.dev on landing support for the ES2025 target in upstream TypeScript 🎉

Heading for TS 6.0 Beta next week 👍

github.com/microsoft/Ty...

Add lib.esnext.temporal by Renegade334 · Pull Request #62628 · microsoft/TypeScript Closes #60164. No custom calendar support, as per the latest spec changes. There are lots of places in the spec where property bags have "at least one of" constraints (eg. either month or...

TypeScript excitement 😉

Congrats to Renegade334 on landing type declarations for @tc39.es Temporal - the new JS Date-Time API - in upstream TypeScript 🎉

Heading for TS 6.0 Beta next week 👍

Temporal is available in Firefox & Chrome today.

github.com/microsoft/Ty...

By the way, TypeScript is finally strict by default 🎉

👀 TypeScript 6.0 (beta) drops next week

It should be the last JS-based TSC version
(no 6.1.*, only patches)

TypeScript 6.0 is a “bridge release ” toward TypeScript 7.0, written in Go, ~10x faster

github.com/microsoft/Ty...

You told us you’re running multiple AI agents and wanted a better UX. We listened and shipped it!

Here’s what’s new:
🗂️ Unified agent sessions workspace for local, background, and cloud agents
🔀 Parallel subagents
💻 Claude and Codex support for local and cloud agents
🌐 Integrated browser
& more...

Also let us know if anything significant feels missing. We're not going to have *everything* 100% off the bat, but knowing what people look for can help us prioritize.

On the editor side let us know if you see any instability. Smaller & detailed repros help there. I often find it's better to pause, write down what I'm running into, and try to minimize it in detail later, instead of doing it at the moment.

TypeScript excitement 😉

Congrats to @jakebailey.dev on updating upstream tsc to default to an unpinned *latest* yearly edition of ES20xx. Heading for TS 6.0 🎉

This mean less transpilation of new JS features & more use of native language features provided by JS engines 👍

github.com/microsoft/Ty...

Forgive me, I wrote a thing about AI: journal.stuffwithstuff.com/2026/01/24/t...

You gotta be prepared with a lie to make them feel bad about taking too much time.

Do not give up your brain It's tempting to just let tools think for you, but you still need to be able to think for yourself and stay sharp.

"Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them."

― Frank Herbert, Dune

cassidoo.co/post/good-br...

The one time I tried this I wish I had used half the espresso it called for.

@hawkticehurst.com might have thoughts (or just want a heads up)

Yeah, I ran into exactly that...

In fact, I ended up not even splitting by `\r\n?` because our test suite normalizes `\r\n` but not `\r` - at least for most tests.

It has to download the index and the search logic, but those are both lazily loaded (only when a user starts searching) and it's cached afterwards.

Personally I think getting instant results locally is a better experience, but I'm wondering if it's a huge issue for people.

You may have noticed that search on the VS Code website has gotten a lot quicker lately.

In our latest blogpost, João Moreno breaks down the engineering process behind docfind, a search engine we built that runs entirely in your browser using WebAssembly: code.visualstudio.com/blogs/2026/0...

The golden thread AI can serve us as a force multiplier, augmenting our own agency and making the most of our own effort, hard work and value. Not by replacing it.

wrote some things I've been thinking about ai
... and it ended up feeling very personal

roe.dev/blog/the-go...

I should probably rephrase as "everything in and about" 😄

Examples include but are not limited to:

- Non-ASCII line terminators in programming languages
- UTF-16

- one of the people on a standards committee at the time, probably

"It was the 90s, everything in Unicode seemed like a good idea."