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Carlos Fuentes

@metcoder.dev

Node.js Collaborator | Open Source Maintainer | Currently Auth0/Okta Just another guy playing to be a software engineer ๐Ÿ‡ณ๐Ÿ‡ฑ Amsterdam

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Latest posts by Carlos Fuentes @metcoder.dev

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sea: support ESM entry point in SEA by joyeecheung ยท Pull Request #61813 ยท nodejs/node This uses the new StartExecutionCallbackWithModule embedder API added in #61548 to support ESM entrypoint in SEA via a new configuration field "mainFormat". The behavior currently aligns ...

Landed initial support for ESM in Node.js SEA: github.com/nodejs/node/...

Similar to CJS entrypoints, it only supports importing builtins, so generally require bundling. @nodeland.dev is working on support for VFS in SEA that will unlock loading other modules within SEA github.com/nodejs/node/...

18.02.2026 21:39 ๐Ÿ‘ 45 ๐Ÿ” 9 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 3

ai;dr

AI; didn't read.

15.02.2026 21:06 ๐Ÿ‘ 253 ๐Ÿ” 62 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 3
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Node.js โ€” Node.js 24.13.1 (LTS) Node.jsยฎ is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

Node.js patch release day! Full changelog and download links at nodejs.org/en/blog/rele... and nodejs.org/en/blog/rele...

10.02.2026 14:20 ๐Ÿ‘ 19 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

How many enterprise companies have meaningfully reduced, or eliminated, their software engineering backlogs. Are we at the point where GenAI is paying off in production?

Are salaries increasing to match this new level of productivity?

10.02.2026 04:42 ๐Ÿ‘ 171 ๐Ÿ” 28 ๐Ÿ’ฌ 23 ๐Ÿ“Œ 6
Why Replacing Developers with AI is Going Horribly Wrong
Why Replacing Developers with AI is Going Horribly Wrong YouTube video by Mackard

The narrative of replacement is something that has been warned for a long time, and should stop for the sanity of the developers and the industry.

Another tool for the toolbox, but never a drop-in replacement.

youtu.be/WfjGZCuxl-U?...

05.02.2026 22:14 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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๐Ÿ”ฅ NEW BANTER: "Scaling Node.js with the Right Signals: ELU"

CPU utilization is lying to you.

Your auto-scaler adds pods while your actual bottleneck gets worse.

Luca and I explain why ELU is the metric you should be watching.

๐Ÿ“… Feb 4th

02.02.2026 16:59 ๐Ÿ‘ 15 ๐Ÿ” 5 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 1
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Node.js โ€” Chalk to Node.js util styleText Node.jsยฎ is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

New Node.js codemod โœจ Migrate from Chalk to Node.js util styleText nodejs.org/en/blog/migr...

02.02.2026 15:34 ๐Ÿ‘ 81 ๐Ÿ” 14 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
GitHub - metcoder95/fuse-box: Easy to use resiliency library for all kind of workloads. Easy to use resiliency library for all kind of workloads. - metcoder95/fuse-box

I've been thinking about this project for a while and finally found the time to materialize it! github.com/metcoder95/f...

A small library with utilities to apply resiliency patterns to (almost) all kind of workloads!

Feedback is always welcomed :)

09.01.2026 11:48 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Node.s sec release

We are doing our best. We are ensuring test passes on all platforms and all active release lines (v20, v22, v24 and v25) - and they aren't currently.

Unfortunately, we don't have an ETA for that, and it's likely that this security release will be postponed one more time. Sorry.

08.01.2026 20:53 ๐Ÿ‘ 7 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Do you mean โ€œpico de galloโ€?
Completely out of topic but now I want some haha

13.12.2025 18:04 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Pizza places pioneered online ordering so that we wouldn't have to have a conversation in order pizza. 20-30 years later, AI companies want us to have a conversation to interact with basically any piece of software.

We have regressed.

11.12.2025 16:39 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I feel the dilemma is, that I feel responsible for being friendly and welcoming to make the experience nicer for newcomers to OSS, who may not yet know the manner well.

But with AI messing this up, it's really hard to tell if it's a human behind I should take care or just AI doing terrible work.

05.12.2025 05:05 ๐Ÿ‘ 163 ๐Ÿ” 16 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 2
Everyone in Seattle hates AI | Hacker News

Fascinating discussion on HN re: how burned out everyone in big tech is on AI: news.ycombinator.com/item?id=4613...

I can relate. At this point, I've been working in the AI space for the better part of 2 years and I'm pretty sick of it. The value add just isn't there.

03.12.2025 23:55 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I called this right, didn't I? Mexico, Ireland, etc.

www.nytimes.com/2025/10/20/t...

20.11.2025 21:34 ๐Ÿ‘ 27 ๐Ÿ” 6 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 0
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LambdaTest - AI Powered Testing Tool | AI Testing Agents On Cloud Power your software testing with AI and cloud. Test intelligently, deploy and scale faster with LambdaTest unified testing platform.

Major thanks toย lambdatest.comย for becoming a Bronze Sponsor of Piscina.js ๐Ÿ™
It ensures we can dedicate time to critical maintenance and new features.

Thank you! Learn more about our sponsors: piscinajs.dev
#oss #Community #piscinajs

30.10.2025 09:22 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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"No more juggling CommonJS and faux-ESM."
- @joyeecheung.bsky.social revealed how @nodejs.org is moving to full ESM and why the future looks brighter for developers.

www.youtube.com/watch?v=I0jv...

16.10.2025 08:12 ๐Ÿ‘ 30 ๐Ÿ” 11 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
Use a minimum password length of 8-128 characters, including lowercase and uppercase characters and numbers.

Use a minimum password length of 8-128 characters, including lowercase and uppercase characters and numbers.

How many years will it take for people to stop this? These requirements are completely useless.

19.10.2025 13:36 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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feat(#2458): WebSocket through HTTP/2 by metcoder95 ยท Pull Request #4540 ยท nodejs/undici This relates to... Closes #2458 Rationale Implements WebSocket over HTTP/2 NoteExperimental warning is emitted on first usage. Changes Features Bug Fixes Breaking Changes and Deprecations St...

Wild PR for WebSocket over HTTP/2 appears:
github.com/nodejs/undic...

03.10.2025 10:42 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

A propos of nothing, it's a completely reasonable thing to not use a company's products, services, and OSS, when their CEO openly supports (and takes selfies with) a world leader who the UN says is currently committing genocide.

30.09.2025 13:25 ๐Ÿ‘ 44 ๐Ÿ” 10 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 0

It reinforces my "AI is a calculator" premise. It helps you come to a correct answer faster and more consistently. But if you don't have the foggiest idea what that correct answer should look like, a calculator ain't gonna make a difference.

05.09.2025 04:52 ๐Ÿ‘ 24 ๐Ÿ” 7 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 0

Amusing how 99% of people using LLMs forget how these things work:

They are advanced probability machines. They generate the next most likely token (word) based in the input and their training.

Under the hood, itโ€™s a giant matrix multiplication that has eerily good output.

04.09.2025 13:47 ๐Ÿ‘ 569 ๐Ÿ” 67 ๐Ÿ’ฌ 56 ๐Ÿ“Œ 16
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JSConf2025: Node.js - Whatโ€™s New and Whatโ€™s Next - R... View more about this event at JSConf2025

I'm going to be speaking at JSConf US in October โญ๏ธ jsconf2025.sched.com/event/26Ubg

12.08.2025 17:41 ๐Ÿ‘ 17 ๐Ÿ” 3 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

and the jar is emptying.

01.08.2025 15:01 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I reached AI fatigue faster over any other tech trending over the last 10 years.

It is just... too much.

31.07.2025 10:47 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I'm starting to think that I should document more the progress on Piscina; maybe some articles on a blog?

21.07.2025 21:23 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

It can be even shorter:

git commit -anm 'wip'

25.06.2025 10:41 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I actually havenโ€™t, at least not detailed.

Overall the CI went down from minutes to seconds.

I can do some research later on if interested

19.06.2025 10:58 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I'm amazed by how fast Piscina's tests get after moving to node:test

Thanks @pmarchini for the contribution!

19.06.2025 09:14 ๐Ÿ‘ 3 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Open Source is still largely chewing and spitting people out even more so now that itโ€™s harder to get paid to do open source work so itโ€™s fully a second job, but literally all of that code is what is powering the Internet and training your LLMs.

The tech industry doesnโ€™t exist without open source.

28.05.2025 22:26 ๐Ÿ‘ 54 ๐Ÿ” 11 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

Yeah, that has sense.

But setting resourceLimits + NODE_OPTIONS="" didn't work? That combination should work (imagine you got the OOM from there)

15.05.2025 18:28 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0