Jeff Posnick
@jeff.posnick.org
Reposted by Jeff Posnick
ECMAScript excitement 😉
TC39 has a *packed* agenda for next week & will consider advancing:
4️⃣ Intl.Locale info
4️⃣ Iterator Sequencing
4️⃣ JSON.parse source
3️⃣ Intl Era Month Code
3️⃣ Joint Iteration
2️⃣.7️⃣ Error.prototype.stack
2️⃣.7️⃣ export defer
2️⃣ Amount
2️⃣ await dictionary
2️⃣ Declarations in Conditionals
🧵
TC39 has a *packed* agenda for next week & will consider advancing:
4️⃣ Intl.Locale info
4️⃣ Iterator Sequencing
4️⃣ JSON.parse source
3️⃣ Intl Era Month Code
3️⃣ Joint Iteration
2️⃣.7️⃣ Error.prototype.stack
2️⃣.7️⃣ export defer
2️⃣ Amount
2️⃣ await dictionary
2️⃣ Declarations in Conditionals
🧵
November 11, 2025 at 9:00 AM
ECMAScript excitement 😉
TC39 has a *packed* agenda for next week & will consider advancing:
4️⃣ Intl.Locale info
4️⃣ Iterator Sequencing
4️⃣ JSON.parse source
3️⃣ Intl Era Month Code
3️⃣ Joint Iteration
2️⃣.7️⃣ Error.prototype.stack
2️⃣.7️⃣ export defer
2️⃣ Amount
2️⃣ await dictionary
2️⃣ Declarations in Conditionals
🧵
TC39 has a *packed* agenda for next week & will consider advancing:
4️⃣ Intl.Locale info
4️⃣ Iterator Sequencing
4️⃣ JSON.parse source
3️⃣ Intl Era Month Code
3️⃣ Joint Iteration
2️⃣.7️⃣ Error.prototype.stack
2️⃣.7️⃣ export defer
2️⃣ Amount
2️⃣ await dictionary
2️⃣ Declarations in Conditionals
🧵
Reposted by Jeff Posnick
I havent read such a banger of an essay in a very long time. This is so well-written!
Maybe Don’t Talk to the New York Times About Zohran Mamdani
It’s remarkable, the people you’ll hear from. Teach for even a little while at an expensive institution—the term they tend to prefer is “elite”—and odds are that eventually someone who was a studen…
lithub.com
November 8, 2025 at 5:37 PM
I havent read such a banger of an essay in a very long time. This is so well-written!
Reposted by Jeff Posnick
Two years ago I interviewed a 31-year-old NY state assemblymember about a 7-year-old girl killed by an SUV driver in his district. I hung up the phone, astonished that I'd talked to a legislator who so thoughtfully articulated what actually needs to change on our streets.
He'll make a great mayor
He'll make a great mayor
June 26, 2025 at 1:55 AM
Two years ago I interviewed a 31-year-old NY state assemblymember about a 7-year-old girl killed by an SUV driver in his district. I hung up the phone, astonished that I'd talked to a legislator who so thoughtfully articulated what actually needs to change on our streets.
He'll make a great mayor
He'll make a great mayor
Reposted by Jeff Posnick
Reposted by Jeff Posnick
October 31, 2025 at 2:23 PM
Reposted by Jeff Posnick
The dream of every Muslim is simply to be treated the same as any other New Yorker.
And yet, for too long, we have been told to ask for less than that, and endure hatred and bigotry in the shadows.
No more.
And yet, for too long, we have been told to ask for less than that, and endure hatred and bigotry in the shadows.
No more.
My Message to Muslim New Yorkers — and Everyone Who Calls This City Home.
YouTube video by Zohran Mamdani for NYC
www.youtube.com
October 25, 2025 at 3:27 AM
The dream of every Muslim is simply to be treated the same as any other New Yorker.
And yet, for too long, we have been told to ask for less than that, and endure hatred and bigotry in the shadows.
No more.
And yet, for too long, we have been told to ask for less than that, and endure hatred and bigotry in the shadows.
No more.
Reposted by Jeff Posnick
Life Is More Than an Engineering Problem, an interview with Ted Chiang from earlier this year. “I don’t believe it’s meaningful to say that something is better art absent any context of how it was created. Art is all about context.” [lareviewofbooks.org]
Life Is More Than an Engineering Problem | Los Angeles Review of Books
Julien Crockett speaks with Ted Chiang about the search for a perfect language, the state of AI, and the future direction of technology.
lareviewofbooks.org
October 3, 2025 at 5:02 PM
Life Is More Than an Engineering Problem, an interview with Ted Chiang from earlier this year. “I don’t believe it’s meaningful to say that something is better art absent any context of how it was created. Art is all about context.” [lareviewofbooks.org]
Reposted by Jeff Posnick
Vitest 4 is out!
- Browser Mode is Stable
- Visual Regression Testing
- Improved Debugging
- Pool Stabilization
- New APIs
- Bug Fixes
Stay updated with our blog post:
vitest.dev/blog/vitest-4
- Browser Mode is Stable
- Visual Regression Testing
- Improved Debugging
- Pool Stabilization
- New APIs
- Bug Fixes
Stay updated with our blog post:
vitest.dev/blog/vitest-4
Announcing Vitest 4.0
Vitest 4.0 Release Announcement
vitest.dev
October 22, 2025 at 3:43 PM
Vitest 4 is out!
- Browser Mode is Stable
- Visual Regression Testing
- Improved Debugging
- Pool Stabilization
- New APIs
- Bug Fixes
Stay updated with our blog post:
vitest.dev/blog/vitest-4
- Browser Mode is Stable
- Visual Regression Testing
- Improved Debugging
- Pool Stabilization
- New APIs
- Bug Fixes
Stay updated with our blog post:
vitest.dev/blog/vitest-4
Reposted by Jeff Posnick
Built-in HTTP proxies are now on v22 😇
(Going to update the version mentions in a WIP guide on using Node.js in enterprise network environments)
(Going to update the version mentions in a WIP guide on using Node.js in enterprise network environments)
Node.js v22.21.0 is out 🙌 Check out the notable changes here: nodejs.org/en/blog/rele...
Node.js — Node.js v22.21.0 (LTS)
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
nodejs.org
October 21, 2025 at 7:05 PM
Built-in HTTP proxies are now on v22 😇
(Going to update the version mentions in a WIP guide on using Node.js in enterprise network environments)
(Going to update the version mentions in a WIP guide on using Node.js in enterprise network environments)
Reposted by Jeff Posnick
I did build SWTL in the meantime though, which (my blog is also built with SWTL: passle.dev) does exactly what OP describes and runs both on the server and in a service worker
github.com/thepassle/swtl
github.com/thepassle/swtl
GitHub - thepassle/swtl: A Service Worker Templating Language (swtl) for component-like templating in service workers. Streams templates to the browser as they're being parsed, and handles rendering i...
A Service Worker Templating Language (swtl) for component-like templating in service workers. Streams templates to the browser as they're being parsed, and handles rendering iterables/Responses...
github.com
October 19, 2025 at 1:17 PM
I did build SWTL in the meantime though, which (my blog is also built with SWTL: passle.dev) does exactly what OP describes and runs both on the server and in a service worker
github.com/thepassle/swtl
github.com/thepassle/swtl
Reposted by Jeff Posnick
In fact, I'd really urge someone to investigate this and pick it up, MAINLY because it *is* a really fun problem space to work on, where not much investigation/development by major (meta) frameworks is happening (as far as I'm aware!)
I never continued that with Astro, it used to work for a while, but it doesn't anymore in recent versions of Astro, and it's unlikely I'll dive back into making it work again, but Matthew has said it should still be possible, so anybody interested could try to make something happen there.
October 19, 2025 at 1:22 PM
In fact, I'd really urge someone to investigate this and pick it up, MAINLY because it *is* a really fun problem space to work on, where not much investigation/development by major (meta) frameworks is happening (as far as I'm aware!)
Reposted by Jeff Posnick
Lit is joining @openjsf.org! 🎉
Today at JSConf, The OpenJS Foundation announced Lit is officially joining as an Impact Project!
We're beyond excited for this move and look forward to continuing our work to build the open web with OpenJS!
Read more on our blog: lit.dev/blog/2025-10...
Today at JSConf, The OpenJS Foundation announced Lit is officially joining as an Impact Project!
We're beyond excited for this move and look forward to continuing our work to build the open web with OpenJS!
Read more on our blog: lit.dev/blog/2025-10...
Lit is Joining the OpenJS Foundation!
Lit is officially joining the OpenJS Foundation as an Impact Project!
lit.dev
October 14, 2025 at 1:35 PM
Lit is joining @openjsf.org! 🎉
Today at JSConf, The OpenJS Foundation announced Lit is officially joining as an Impact Project!
We're beyond excited for this move and look forward to continuing our work to build the open web with OpenJS!
Read more on our blog: lit.dev/blog/2025-10...
Today at JSConf, The OpenJS Foundation announced Lit is officially joining as an Impact Project!
We're beyond excited for this move and look forward to continuing our work to build the open web with OpenJS!
Read more on our blog: lit.dev/blog/2025-10...
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.
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.
September 21, 2025 at 11:41 AM
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.
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.
Reposted by Jeff Posnick
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
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
September 20, 2025 at 11:17 AM
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
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
Reposted by Jeff Posnick
I've joined @whiskey.fm as a permanent show host!
I'll be bringing #CSS content and overall more dorky nerdery to the pod.
Tune in if you're into
(web tech news || whiskey || whatnot)
nerdy.dev/www-ep208
I'll be bringing #CSS content and overall more dorky nerdery to the pod.
Tune in if you're into
(web tech news || whiskey || whatnot)
nerdy.dev/www-ep208
Www Ep208 · September 4, 2025
Website for Adam Argyle: Teacher, Speaker, CSSWG member, and creator of Open Props and VisBug.
nerdy.dev
September 10, 2025 at 4:22 PM
I've joined @whiskey.fm as a permanent show host!
I'll be bringing #CSS content and overall more dorky nerdery to the pod.
Tune in if you're into
(web tech news || whiskey || whatnot)
nerdy.dev/www-ep208
I'll be bringing #CSS content and overall more dorky nerdery to the pod.
Tune in if you're into
(web tech news || whiskey || whatnot)
nerdy.dev/www-ep208
Reposted by Jeff Posnick
Between the time we launched the original Learn CSS course on web.dev and today, container queries landed in browsers and became Baseline Widely available! It was high time for an update, and we were lucky enough to have the team at OddBird work with us. Enjoy 9 new modules! web.dev/blog/learn-c...
A refresh of Learn CSS with nine new modules | Blog | web.dev
Our popular Learn CSS course has been updated with new modules covering the latest CSS features.
web.dev
September 9, 2025 at 8:10 PM
Between the time we launched the original Learn CSS course on web.dev and today, container queries landed in browsers and became Baseline Widely available! It was high time for an update, and we were lucky enough to have the team at OddBird work with us. Enjoy 9 new modules! web.dev/blog/learn-c...
Reposted by Jeff Posnick
terrific post, to which i'll add a couple of related thoughts. first: a lot of developers, especially juniors, tend to assume that other people's code is better than theirs, and so using a dependency (rather than a snippet) makes their codebase better
this is very much not the case
this is very much not the case
some thoughts about the bloat introduced by edge-case first libraries
The bloat of edge-case first libraries
How building edge-case first led to bloated, overly-granular libraries and what we can do about it
43081j.com
September 9, 2025 at 5:52 PM
terrific post, to which i'll add a couple of related thoughts. first: a lot of developers, especially juniors, tend to assume that other people's code is better than theirs, and so using a dependency (rather than a snippet) makes their codebase better
this is very much not the case
this is very much not the case
Reposted by Jeff Posnick
Reposted by Jeff Posnick
gradient.style has finally
- come out of beta
- offers multiple background editing
- is open source
🎉 nerdy.dev/gradient.sty...
- come out of beta
- offers multiple background editing
- is open source
🎉 nerdy.dev/gradient.sty...
August 28, 2025 at 9:06 PM
gradient.style has finally
- come out of beta
- offers multiple background editing
- is open source
🎉 nerdy.dev/gradient.sty...
- come out of beta
- offers multiple background editing
- is open source
🎉 nerdy.dev/gradient.sty...
Reposted by Jeff Posnick
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 🎉
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 🎉
Just filed an issue to turn `--strict` on by default in TypeScript.
Maybe it's a little bit ambitious, but I'm excited for us to try this one. 😄
github.com/microsoft/Ty...
Maybe it's a little bit ambitious, but I'm excited for us to try this one. 😄
github.com/microsoft/Ty...
Enable `--strict` mode by default · Issue #62333 · microsoft/TypeScript
Background Almost a decade ago, we began to add certain options beyond --noImplicitAny and --strictNullChecks. Flags like --strictFunctionTypes, --noImplicitThis, and --strictBindCallApply have bee...
github.com
August 25, 2025 at 7:42 PM
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 🎉
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 🎉
Reposted by Jeff Posnick
Galavanting around NYC for a Zcavenger Hunt? Don't mind if we do!
August 24, 2025 at 7:56 PM
Galavanting around NYC for a Zcavenger Hunt? Don't mind if we do!
Reposted by Jeff Posnick
MDN just got a glow-up! 🌟
We’ve completely rebuilt our front end, redesigned, reengineered, and ready to help you find what you need.
✨ New search
✨ Improved typography & code rendering
✨ Sleeker nav & icons
Read more 👇
developer.mozilla.org/en-US/blog/...
We’ve completely rebuilt our front end, redesigned, reengineered, and ready to help you find what you need.
✨ New search
✨ Improved typography & code rendering
✨ Sleeker nav & icons
Read more 👇
developer.mozilla.org/en-US/blog/...
Launching MDN's new front end | MDN Blog
MDN is getting a facelift 🎉 Discover what's changed, what's improved, and how navigating the site just got smoother.
developer.mozilla.org
August 20, 2025 at 8:30 AM
MDN just got a glow-up! 🌟
We’ve completely rebuilt our front end, redesigned, reengineered, and ready to help you find what you need.
✨ New search
✨ Improved typography & code rendering
✨ Sleeker nav & icons
Read more 👇
developer.mozilla.org/en-US/blog/...
We’ve completely rebuilt our front end, redesigned, reengineered, and ready to help you find what you need.
✨ New search
✨ Improved typography & code rendering
✨ Sleeker nav & icons
Read more 👇
developer.mozilla.org/en-US/blog/...
Reposted by Jeff Posnick
This is one I've been thinking about for a long time, and I do hope you'll read it, and share it. The stakes have never been higher, but it'ss never been clearer: @zohrankmamdani.bsky.social is exactly what NYC's entrepreneurial community needs. www.anildash.com/2025/08/20/z...
Zohran Mamdani is the leader NYC needs for innovation and entrepreneurship - Anil Dash
A blog about making culture. Since 1999.
www.anildash.com
August 20, 2025 at 1:59 AM
This is one I've been thinking about for a long time, and I do hope you'll read it, and share it. The stakes have never been higher, but it'ss never been clearer: @zohrankmamdani.bsky.social is exactly what NYC's entrepreneurial community needs. www.anildash.com/2025/08/20/z...
walton
goggins
cobie
smulders
tyler
childers
goggins
cobie
smulders
tyler
childers
August 19, 2025 at 6:30 PM
walton
goggins
cobie
smulders
tyler
childers
goggins
cobie
smulders
tyler
childers
Reposted by Jeff Posnick
The JavaScript Oxidation Compiler
A collection of high-performance JavaScript tools written in Rust
oxc.rs
August 17, 2025 at 4:55 AM