Really exciting to see this finally coming together! It's been a long journey for myself and many others, and I'm very happy with where we've landed.

ECMAScript excitement 😉 This week TC39 advanced these proposals 🎉 3️⃣ Non-extensible applies to Private 2️⃣.7️⃣ Import Bytes 2️⃣.7️⃣ Iterator Chunking 2️⃣ Native Promise Predicate 1️⃣ Array.prototype.pushAll 1️⃣ Native Promise Adoption

This is huge, Temporal is on its way, its been a long effort and great to see collaboration on a centralized Rust library including V8 who have never integrated Rust before now! Shout out to everyone who has been involved. Much more info in the blog post!

I bang on about Temporal a LOT because it's important, it's needed, it's taken a long time to do so there are lessons about sustaining work and how browsers work with standards and the shared library is a really interesting model for dealing with perceptions of 'it's too much work for us to do it'

Nice.

⚡ UPDATE ⚡ An hour after posting, Chrome revised their estimate on shipping TC39 Stage 3 Temporal to be Chromium 144. (This is still very welcome news! 😉) chromestatus.com/feature/5668...

ECMAScript excitement 😉 @jason-williams.co.uk from TechAtBloomberg announces the release of Boa's Rust-based implementation of TC39 Stage 3 Temporal 🎉 Chrome estimates this will ship in Chromium 143 🎉🎉 Temporal is the shiny replacement for the broken JS Date API ✨

This year, the State of JS survey is coming early! Go take it now! survey.devographics.com/en-US/survey...

ECMAScript excitement 😉 Congrats to @styfle.dev on advancing the Import Bytes proposal to Stage 2.7 today at TC39 🎉 It lets you import raw bytes as a readonly Uint8Array 👍 import bytes from "./photo.png" with { type: "bytes" } Similar APIs are already available in Deno, Bun, & bundlers.

🚀 BIG NEWS: We just open-sourced the Intelligent Command Center (ICC) for Node.js! After years of watching teams struggle with Node.js on Kubernetes, we're changing the game. The problem? K8s was built for Java/.NET, not Node.js's async model. The cost? 40% overprovisioning. 🧵

I don't have a problem with making new RPC systems! I can stop any time I want! But I don't want to. So I made a new one for you. It's called Cap'n Web. It's like Cap'n Proto RPC, except focused on working great in browsers and JavaScript/TypeScript servers. blog.cloudflare.com/capnweb-java...

ECMAScript excitement 😉 Congrats to Mark Miller on advancing the proposal for "Non-extensible applies to Private" to Stage 3 today at TC39 🎉 This breaking change means that if you seal/freeze an object, it cannot later have private fields stamped upon it ❄️

ECMAScript excitement 😉 Congrats to @danr.bsky.social on advancing the Array.prototype.pushAll proposal to Stage 1 today at TC39 🎉 It lets you append many items into an existing array without running out of stack memory 👍 ❌ Risky: arr.push(...veryBigArray) ✅ Safe: arr.pushAll(veryBigArray)

ECMAScript excitement 😉 Congrats to @michael.ficarra.me on advancing the Iterator Chunking proposal to Stage 2.7 today at TC39 🎉 It lets you make iterators that can chunk & window content. [0,1,2,3].values().chunks(2); // [0,1], [2,3] [0,1,2,3].values().windows(2); // [0,1], [1,2], [2,3]

TypeScript excitement 😉 TS 6.0 will enable "noUncheckedSideEffectImports" by default 🎉 This increases type safety by erroring if you try to import a non-existent file. Thanks for @arnaud-barre.bsky.social for pitching & @searyanc.dev for manually coding the PR 👍 github.com/microsoft/Ty...

I'm grateful that TechAtBloomberg folk get to meet in-person whilst living around the globe. Travel is a privilege. We just wrapped up a week in London that brought together our JS Infra & Performance/Observability teams who power the Terminal. Day 1 was at the National Maritime Museum, Greenwich.

Some personal news: I'm starting a job tomorrow Bloomberg Engineering. It'll be exciting to work someplace where JavaScript/TypeScript are key to the business. And more importantly, I'll be joining a fantastic group of people.

SquiggleConf deserves an order of magnitude more attendees

ECMAScript excitement 😉 Next week's TC39 meeting has a packed agenda: 🔼 Amount 🔼 Array.prototype.pushAll 🔶 AsyncContext 🔶 Await Dictionary 🔼 Import Bytes 🔶 Intl Era Month Code 🔼 Iterator Chunking 🔶 new Global() 🔼 Non-extensible applies to private 🔼 Promise Adoption 🔼 Promise Predicate 🔶 Temporal

The WebAssembly 3.0 spec is complete! webassembly.org/news/2025-09... This includes major features like GC, 64-bit memories, exceptions, and tail calls.

👏 Shoutout to our sponsor Bloomberg! @bloomberglp.bsky.social runs one of the world's largest information networks, powered by web tech. Its engineers have built ts-blank-space & Stricli + contributed features to TypeScript incl. Isolated Declarations. More: TechAtBloomberg.com/JavaScript

ECMAScript excitement 😉 Congrats to @firefox.com developers Yoshi Cheng-Hao Huang, Jon Coppeard, Dan Minor on landing ES2023 "Symbols as WeakMap keys" in upstream SpiderMonkey. Heading for Firefox 146 🎉 This completes support across all major browsers 👍 github.com/tc39/proposa...

💈Where should Node look first for configuration values? Vote now below.

Storybook gets 15% lighter by switching from CJS to ESM 🔥

@e18e.dev is so important

In the next release, Rspack ships advanced tree-shaking for dynamic imports via member expression analysis. We've also contributed this optimization to webpack — pushing the ecosystem forward. 🚀

TypeScript nostalgia 😉 TS 1.5 is now 10 years old and was a huge release: 🔷 ES6 🔷 ES Modules 🔷 tsconfig introduced 🔷 `namespace` keyword 🔷 Experimental Decorators 🔷 All star credits Best Quote: "One of the common points of feedback we’ve heard ... is that the modules are a bit confusing."

🌐 Reminder from the Node.js TSC meeting today: We're having a Collaborator Summit next October 17th! github.com/openjs-found...

Friendly reminder that I will be at @squiggleconf.com in a couple weeks, talking about source maps. Come say hi! :)

Today on the pod, learn about TS 6.0 breaking changes, Node type stripping migration strategies, Deno's #FreeJavaScript campaign, Nx security PSA, Vitest 4 perf improvements & more! share.transistor.fm/s/56804839 #typescript

Fresh 2 has graduated to beta releases - essentially release candidates before a stable release. Fresh can now act as a Vite plugin, opening the door to HMR, faster boot times, and Cloudflare deployments. deno.com/blog/fresh-a...

🔥 Today we're shipping something special at @platformatic: Next-generation flamegraph visualization for Node.js! We've built a complete profiling ecosystem that makes performance optimization intuitive and actionable. Let me show you what we've cooked up 🧵

Want to hang with the Node.js crew IRL? JSConf is the spot. Tickets are 20% off until September 2 for the End of Summer Sale. 👀 Use code JSCONF25SUMMER at checkout: events.linuxfoundation.org/jsconf-north...

Ripple is a new UI framework by @trueadm.dev 🔥

Today on the pod, major TS ecosystem updates: TypeScript Go gets biggest nightly update yet, Rspack announces new Rslint linter, Bun 1.2.21 features 500x faster postMessage, plus Next.js 15.5 has typed routing! share.transistor.fm/s/0304855f #typescript

After several months of work, the node:fs APIs in Cloudflare workers are finally ready to ship

@robpalmer.bsky.social makes a good point - `--strict`-by-default isn't the only thing to expect in TypeScript 6.0. We're trying to adopt better defaults and simplify for the future. Check out the current plans on our milestone: github.com/microsoft/Ty...

📜 A case study by Stuart Dotson on how @calm.com migrated a Rush.js monorepo to use Node's type-stripping 📈 Describes migration phases 🆕 Starts with converting to ESM 💥 Sinon usage needed careful handling 🌟 Adopted erasableSyntaxOnly 🔥 30% faster dev iteration ⚡ 40% faster app start

TypeScript excitement 😉 TS 6.0 is planning a bunch of breaking changes to tsconfig options to deprecate some and change the defaults for others. This will simplify configuration and ease the transition to the Go-based TS 7.0 👍 The latest pitch is to enable strict type-checking modes by default 🎉

we've just launched the replacements docs on the @e18e.dev site! this is part of a wider effort to document how to make your projects more performant. for now, just the replacements - but in future, perf tips and much more 🎉 all feedback much appreciated! ❤️

Multithreaded linting just landed in ESLint! eslint.org/blog/2025/08...

Let's see .. how about a little experiment involving direct support for typescript erasable syntax in workerd. This is not expected to be enabled in production anytime soon (or necessarily at all)... Just experimenting with possibilities. github.com/cloudflare/w...

🎙 New Episode of Igalia Chats: TC39 Episode 109: The Proposal Awakens Brian and Eric talk to their TC39 representative colleagues @nicr.dev and @ryzokuken.bsky.social about TC39 in general, and the most recent meeting. www.igalia.com/chats/tc39-109

Tonight will be one of the best nightlies of the TypeScript Native Preview ever. 1) @andrewbran.ch fully rewrote the language server infra into a snapshot model. No more data races. It's so cool 2) Sheetal added build mode (-b), and it's even _concurrent_ build mode. 10x+ on dt-tools, hot and cold

⚡ Speaker highlight: Kevin Deng, Creator of tsdown When it comes to publishing and packing libraries, there are tons of things to consider. Luckily, @sxzz.dev built an all-in-one solution! Meet tsdown and learn about automatic dts generation, dependency analysis, multi-format output and more!

Node.js can now execute TypeScript nodejs.org/en/blog/rele...

Type-aware linting is a fast-moving space with multiple experimental approaches, several recent changes, and potentially confusing names. This is a well-written article that describes Oxc's approach and helps clarify the overall landscape 👍

My ahead-of-time JS engine Porffor eliminates JS cold starts on AWS Lambda. 12x faster and 2x cheaper than managed Node. Still very early but these results should speak for themselves :) goose.icu/lambda/

As we look forward to TypeScript being ported to Go, it raises the interesting prospect of a new stack of tooling that integrates natively on top of it. ESBuild uses Go, but it is fully separate from TS Go. Whereas Rslint is an example of a new Go-based linter with direct integration 🔥

So many great things happening right now in @cloudflare.social Workers.... Coming within weeks will be node:fs, node:http, and node:process improvements, we're experimenting with integrated typescript support in the runtime itself, might be enabling dynamic eval soon, wasm/rust improvements, ...