iiinova — where your digital self keeps evolving

Tomas @tomasklingen.nl · 04/10/2026

Sonnet 5.5 high and extra high are my favourites now for active collaboration work. The speed/quality balance is very good. Opus might be better but not by much, and is slower.

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Tomas @tomasklingen.nl · 02/10/2026

Wow this is pretty clever en.wikipedia.org/wiki/Cache_s...

en.wikipedia.org

Cache stampede - Wikipedia

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Tomas @tomasklingen.nl · 20/09/2026

Forgot how good this video is

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Tomas @tomasklingen.nl · 06/09/2026

Unironically added this to a prompt before: “how would @danabra.mov write this code?” It works 😅

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Tomas @tomasklingen.nl · 16/08/2026

A good reminder. Any process that can be done with old school mechanical static deterministic code instead of LLMs should be done like that.

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Scott Tolinski @tolin.ski · 14/08/2026

This is the most important video I've ever made. In this, I explore the negative and positive mental health effects of AI coding, with data and expert commentary. www.youtube.com/watch?v=iPUn...

youtube.com

The True Cost of AI Coding

YouTube video by Syntax

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Scott Tolinski @tolin.ski · 31/07/2026

I’m exploring the mental health effects of AI coding. This is a super quick (blazing fast), anonymous survey. Please fill out and share so that the responses will be well rounded. forms.gle/dpD8Tk1QnXAz...

forms.gle

AI Coding & Mental Health

All answers are anonymous.

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Tomas @tomasklingen.nl · 08/07/2026

Indeed, so always write it as simple for the reader to understand. Or you know, for yourself in 2 weeks.

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alto! @alto.fish · 24/05/2026

The Cure were really onto something when they thought of JavaScript in 1979

[Chorus]
Object, object
Object, object
Object, object
Object, object

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Tomas @tomasklingen.nl · 11/05/2026

Wow this is really nice. It’s a feature I’ve been missing that I used at my first programming job where they used SVN lol.

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Lars @webpro.nl · 02/04/2026

Massive props to @lubach.nl (Dutch TV) for speaking out against X, recommending @bsky.app and Mastodon. youtube.com/watch?v=u4hH...

youtube.com

Wat doet onze overheid nog op X? | LUBACH

YouTube video by LUBACH

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Tomas @tomasklingen.nl · 24/03/2026

If everyone uses a release cooldown, do comprised packages get noticed in time? Or is it like the joke you hear during a safari: “you don’t need to outrun the lion, you just need to outrun your friend”? nesbitt.io/2026/03/04/p...

nesbitt.io

Package Managers Need to Cool Down

A survey of dependency cooldown support across package managers and update tools.

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Tomas @tomasklingen.nl · 24/03/2026

The topic of skills atrophy has been running through my mind quite a bit. Delegating cognitive tasks to an AI system could mean over time you lose some of those abilities yourself. Similarly to how you need to keep training a muscle or a sport: use it or lose it. But is this always bad per se?

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Tomas @tomasklingen.nl · 22/03/2026

Yesterday I had my iPhone battery replaced after some years. I had forgotten what a great feeling it is to only have to charge once per day. It lessens the desire to replace this 13 pro, which is otherwise working perfectly fine still 👌

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Tomas @tomasklingen.nl · 21/03/2026

Wow and remember the io js drama?

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Tomas @tomasklingen.nl · 16/03/2026

From a token efficiency perspective I don’t fully follow why agent skills would be more efficient than MCP. Doesn’t MCP expose a short description of available tools in the same way skill markdown files have some meta details in frontmatter?

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Laurie Voss @seldo.com · 15/03/2026

I have always been the kind of developer who only cared about outcomes. Give me the tool, the framework, the head start. I just want my website. A totally different kind of developer exists who cares about the *craft*. Getting that function just right. Those devs are in pain right now.

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Tomas @tomasklingen.nl · 06/03/2026

My girlfriend and I are taking Spanish lessons. We got a traditional book and studying goes well. So of course I’m working on a tool to optimize learning. Using spaced repetition algorithms, flash cards and good quality spoken output. Pretty much Anki, but more specialised.

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Tomas @tomasklingen.nl · 06/03/2026

Due to technical limitations there can't be two usb 3 ports. Awkward, but fine. But then the placement is a bit counter intuitive. When both ports are in use, it's probably most likely the port more to the back of the device is used for charging, keeping the faster port occupied.

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Tomas @tomasklingen.nl · 19/02/2026

Scraping bots are getting good. They can pass CloudFlare challenges. We’ve been fighting a 40k “random” ip botnet for a couple of days now. CF does mark them as “somewhat odd” with a lower bot score though. That helps.

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React Router @reactrouter.com · 02/02/2026

Official Agent Skills are now available for React Router github.com/remix-run/ag...

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CodePen @codepen.io · 02/01/2026

"Collision detection using style queries plus keyframes" by lee codepen.io/leemeyer/pen...

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Tomas @tomasklingen.nl · 24/12/2025

We ran into a memory leak in a Node service due to a misunderstanding of Reselect’s createSelector memoization. Might be worth writing up, or is that too dry? 🤔

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Tomas @tomasklingen.nl · 02/12/2025

Can’t wait to try it out! 👌

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Seb ⚛️ ThisWeekInReact.com @sebastienlorber.com · 18/11/2025

👀 Future of JS This underrated upcoming JS feature is super useful 🔥 Soon, you should be able to import JS code as a string! This is super useful, in particular for docs sites! Similar to Webpack raw loader, asset query ?raw etc, but available everywhere natively!

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Nadia Makarevich @adevnadia.bsky.social · 21/10/2025

React Server Components: do they improve performance or make it worse? If your answer is “I’ve no idea 😅,” I wrote a deep-dive to answer that! Experiments and real numbers, CSR vs SSR vs RSC, same app + test setup. Focus: initial load + data fetching. www.developerway.com/posts/react-...

developerway.com

React Server Components: Do They Really Improve Performance?

A data-driven comparison of CSR, SSR, and RSC under the same app and test setup, focusing on initial-load performance and the impact of client- vs server-side data fetching (including Streaming + Susp...

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Tomas @tomasklingen.nl · 20/10/2025

Wow I’m shocked.. I’ve watched so many hours of videos of him explaining chess with so much passion and expertise. I was literally watching one tonight. This is an extremely sad loss for the chess community.

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Ollie Williams @ollie-williams.bsky.social · 14/10/2025

Firefox now supports view transitions, the command and commandfor HTML attributes, and the moveBefore() method. www.firefox.com/en-US/firefo...

firefox.com

Firefox 144.0, See All New Features, Updates and Fixes

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Tomas @tomasklingen.nl · 02/10/2025

It’s not explicitly required, but passing an Error object type as { cause } will display very nicely in error monitoring tools like @sentry.io. It will show the child and parent errors stacked together.

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Tomas @tomasklingen.nl · 29/09/2025

Go take the State of JavaScript 2025 survey if you have a minute! survey.devographics.com/survey/state...

survey.devographics.com

State of JavaScript 2025

Take the State of JavaScript survey

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Tomas @tomasklingen.nl · 20/09/2025

Every React hook has multiple levels of understanding a dev has to go through to get to most out of them. Hopefully at some point I fully understand Reacts concurrent rendering gotchas.

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Tomas @tomasklingen.nl · 19/09/2025

Having this exact same problem. In the Mac dock I'm trying to keep them far away from each other

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Tomas @tomasklingen.nl · 17/09/2025

About the React useEffect bug and the CloudFlare outage.. Of course devs just need to learn their tools, RTFM and understand the libs/frameworks they're using. But what's also true is that framework APIs should be designed in such a way that they're intuitive to use and hard to accidentally abuse.

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Dominik 🔮 @tkdodo.eu · 13/09/2025

Can't believe what I'm reading. Accidentally DDoS yourself because you fetch in useEffect in 2025 is so avoidable 😂 blog.cloudflare.com/deep-dive-in...

The API calls were managed by a React useEffect hook, but we mistakenly included a problematic object in its dependency array.

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MDN Web Docs @developer.mozilla.org · 25/08/2025

We’ve launched MDN’s new front end — and it’s just the beginning. Intentionally targeting Baseline "Widely available" features when deciding on which ones to use. This means we're able to adopt modern CSS and web components for our UI. Check it out 👇 developer.mozilla.org/en-US/blog/...

developer.mozilla.org

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.

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Filippo Valsorda @filippo.abyssdomain.expert · 13/08/2025

I edited my Cross-Site Request Forgery countermeasures research into a stand-alone article, including recommendations reusable by other projects. tl;dr: no need for tokens or keys, modern browsers tell you if a request is cross-origin! words.filippo.io/csrf

words.filippo.io

Cross-Site Request Forgery

Cross-Site Request Forgery countermeasures can be greatly simplified using request metadata provided by modern browsers.

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Tomas @tomasklingen.nl · 10/08/2025

I’m a little bit obsessed with hydration errors in React. To prevent them the typical advice is to use useEffect when using browser apis like localStorage. But useSyncExternalStore is so much more powerful! When (re)mounting a component, it skips the getServerSnapshot 💡 saves a useless render.

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Tomas @tomasklingen.nl · 08/08/2025

Of all the type-aware TS linting rules I’m really looking forward to see “No-unnecessary-condition” implemented in the Rust/Go-based linters. I almost feel like it could be a strict tsc flag. typescript-eslint.io/rules/no-unn...

typescript-eslint.io

no-unnecessary-condition | typescript-eslint

Disallow conditionals where the type is always truthy or always falsy.

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Kenji Baheux @exploractical.com · 04/08/2025

Saw @ThePrimeTime's video (youtu.be/ciNXbR5wvhU?...) & comments around HTTP cache & sharing across origins. Resources have long been isolated due to partitioning (2020+ in Chrome, longer in other browsers). Spreading knowledge is hard 😳: developer.chrome.com/blog/http-ca... #webperf #webdev

youtu.be

Why your website should be under 14kB in size

YouTube video by ThePrimeTime

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Tomas @tomasklingen.nl · 26/07/2025

Together with Claude Code I'm migrating my site from react-router (with pre-prendering for SSG) to Astro. I first let CC read some Astro docs, then prompted to create a project requirement plan for the migration in several steps. This generally works great for CC. The time estimation is funny.

screenshot of a PRD that claude code created

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Cory LaViska @cory.laviska.com · 26/07/2025

“The reason SPAs became the default wasn’t because they were better. It was because, for a while, they were the only way to deliver something that felt fluid – something that didn’t flash white between pages or jank the scroll position.” www.jonoalderson.com/conjecture/i...

jonoalderson.com

It's time for modern CSS to kill the SPA

Native CSS transitions have quietly killed the strongest argument for client-side routing. Yet people keep building terrible apps instead of performant websites.

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Josh W. Comeau @joshwcomeau.com · 21/07/2025

One of the most powerful tools in my toolbox is SVG. When combined with CSS and JavaScript, we can do some truly remarkable things. ✨ 📝 I’ve just published a brand-new blog post that covers the most critical fundamentals. It’s chock full of interactive demos. 😄 Check it out:

joshwcomeau.com

A Friendly Introduction to SVG • Josh W. Comeau

SVGs are one of the most remarkable technologies we have access to on the web. They’re first-class citizens, fully addressable with CSS and JavaScript. In this tutorial, I’ll cover all of the most imp...

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Tomas @tomasklingen.nl · 22/07/2025

At work we’re currently in the process of migrating from php + react SPA with some old school Hypernova SSR rendering to @reactrouter.com in framework mode. It’s tough and a lot of work, but probably worth it!

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Tomas @tomasklingen.nl · 22/07/2025

Dropped out of technical computer science. I liked web and visual stuff things more than low level programming. It doesn’t t hurt to have dabbled into assembly and c for a little bit though!

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Tomas @tomasklingen.nl · 19/07/2025

I upgraded my site! ✨ tomasklingen.nl 💿 Static site generation using React Router with pre-render 🐙 Builds with GitHub Actions, hosted on GitHub pages 💨 My first experience with Tailwind (the design is in beta shape still though 🚧) 📝 Notes/thoughts/blog in Markdown #publiclearning #frontend

tomasklingen.nl

Tomas Klingen - Front-end Web Developer

Meet Tomas Klingen, a passionate Front-end Web Developer based in the Netherlands. Explore his portfolio showcasing expertise in React, Angular, TypeScript, and crafting modern, user-centric web appli...

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Tomas @tomasklingen.nl · 11/07/2025

I scored 10/28 on jsdate.wtf and all I got was this lousy text to share on social media.

jsdate.wtf

new Date("wtf")

How well do you know JavaScript's Date class?

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Tomas @tomasklingen.nl · 03/07/2025

Cloudflare's bot crawl payments: Is this innovation or just monetizing unauthorized data access? Feels a bit like fencing digital info. #Cloudflare #DataRights #PayPerCrawl

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