Just recently I wanted to write a script that uploads a directory to S3. I decided to use Copilot. It's my attempt to prove two things: (a) that AI can't (still) replace me as a senior software engineer and (b) that it still makes sense to learn programming. krasimirtsonev.com/blog/article...

Finally. Holding a printed copy of my fifth book 📖✨ “Pocket Guide to Seniority”. A short, practical read with my tips on growing into a senior engineer. Written on and off for 2 years. ~60 pages. Quick read. 👉 seniority.krasimirtsonev.com

These two things: "For every hard pitch I’ve soloed, I’ve probably soloed a hundred easy pitches." "I differentiate between risk and consequence. Sure, falling from this building is a high consequence, but, for me, it’s low risk." (because he's well prepared) www.youtube.com/watch?v=KkVZ...

Just to remind you that we did have server-side JavaScript 25 years ago ... Nothing new really ... just well-forgotten old.

New blog post 🔥 "Streaming JSON in 200 lines of JS" 👉 krasimirtsonev.com/blog/article... React Server Components brainrot led me here. Also yes, I made an npm package. It’s called Streamson 😎 #JavaScript #HoldMyJSON #YetAnotherNpmPackage

🤦 Remember that quote from Brian Kernighan: "Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it."

When the AI gets confused, it’s usually not thinking — it’s mirroring your lack of fundamentals. Adaptability comes from fundamentals. AI just exposes who skipped them. 😌🔥 P.S. Scott at Syntaxfm

Let’s be real, friends — most days we just… write code (or stare at it until it fixes itself) 🙂 P.S. And yes, of course I generated the version on the right with my personal AI assistant. It knows me a little too well, doesn’t it? 😄

Admit it - you like #JavaScript! It’s fine, this is a safe space ... confess the truth. You write JavaScript. P.S. @JSTalks

🏁 Wrapped up my final workshop of the year - the grand finale of “Krasimir talks about SSR until someone stops him.” See you in 2026 — and yes, you can hire me to bring this workshop to your event. 🚀

JavaScript has its 30th birthday today! 🎂 I'm attaching a function that calculate its age 😂. In its lifetime it has given us: - Pop-up ads 👀 - jQuery magic ✨ - Callbacks 😵 - Promises 🙂 - async/await 😍 - ... and React hydration errors 🤬 What a journey. Happy 30th Birthday, you chaotic legend!

🎢 20 years of web dev chaos and “wait… what” moments. At WebExpo 2025, @krasimir.bsky.social zipped us through the web’s origins. 🦕 The first surviving webpage, early Ajax, the rise and fall of Flash and the reminder that HTML, CSS and JS still carry everything.

🚀 Had a blast at #JSTalks2025! MC-ing, a talk, an AI panel, and tons of great JavaScript vibes. Huge thanks to Mihail Mateev, Piya Khongcharoen & team for the flawless event. Saw old friends, made new ones — can’t wait for next year! 🙌

Learn from @krasimir.bsky.social, Author & JavaScript Expert, how to build Vanilla Server Components in React - no framework needed! 🧩 Dive deep into server-side rendering with pure JS & Node. Join https://reactadvanced.com/

🔥 OMG big announcement time (AI told me to start with enthusiasm) 🔥 I’m speaking at @webexpo.bsky.social 2026 in Prague 🇨🇿 — May 27–29! Talk: “JavaScript: Weird by design and we ❤️ it” AI wrote this post. I ruined it. We’re a team now. 🎟️ webexpo.net/tickets/ #WebExpo #JavaScript #AIWroteThis

🤘There are just two weeks till JSTalks. The schedule is up at www.jstalks.net/schedule. Make sure that you stop by if you are in Sofia on the 29th of November. All day #JavaScript! I'm wrapping up my slides and want to share a sneak peek. I'm almost sure that your apps looks similar. Isn't it? 😎

🚀🤩 I'll be leading a free online workshop on 4th of December as part of React Advanced Conference. We'll be exploring server-side rendering. Don’t miss out – grab your conference ticket to attend here reactadvanced.com P.S. By the way, you could attend remotely!

🚀🎊 Hey, world. I'm starting the week with a huge announcement. I'm turning a new page in my career. I'm now a proffesional "vibe code restoration specialist". I'm here now to read, understand and fix the code that AI generates. Wish me luck🤞.

Great talk by @krasimir.bsky.social! Learn how to apply #React principles beyond React projects for scalable, maintainable codebases in front-end JavaScript tasks. https://gitnation.com/contents/using-react-without-using-react

Holy cow ... done with WebGL and Three.js 👉 messenger.abeto.co

Spent the weekend testing React Server Components support across popular frameworks 👉 rsc.krasimirtsonev.com Results: ✅ Next.js, Vite, Waku (100%) ⚠️ Forket, Parcel, ReactRouter, RedwoodSDK (83%) Tests: rsc.krasimirtsonev.com#testcases Know another RSC-ready lib? Ping me! #ReactJS #javascript

HA! It was about time ... AI agent injection www.youtube.com/watch?v=vlF0...

Here's my new and shiny library - Forket and its story krasimirtsonev.com/blog/article... It's about supporting React Server Components without a framework. #rsc #react #javascript

The online world is changing for good or bad. Here's a new kind of service - translate every site to a simplified markdown. My own looks like this into.md/https:/krasi...

For those of you that write #CSS. Pretty interesting findings in here 2025.stateofcss.com/en-US/

What a nice little app I found - a cool way to create some sort of a digital signature based on your name 👉 signature.cnrad.dev

🚀Excited to lead a React Architecture Masterclass this October in Amsterdam – together with the amazing folks at @triforkams! 🎉 2 days of patterns, SSR, RSC, state mgmt, testing & real-world app building. Let’s level up together! 💪 trifork.nl/academy/our-... #React #Amsterdam

Today’s “How the hell didn’t I know about that?” moment: we can use the hidden attribute on any HTML element to hide it. Until now, my go-to method was using display: none. More about it here: developer.mozilla.org/en-US/docs/W...

Be honest! When was the last time when you click on that "2"?

The #JavaScript minifiers are really interesting. Here's something that I just saw and it saves a couple of bytes.

🏝️🍹⛱️🌞🌊 @reactsummit.gitnation.org vibes at the beach :)

👋 Hey, I started preparing the new conference season -🎤 Excited to speak at DEV: Challenge Accepted on Sept 28 in Sofia, Bulgaria! Topics include AI/ML, front-end, back-end, DevOps, leadership & more. Check out www.challengeaccepted.dev — come say hi if you're around! 👋

I'm just passing by to say that another framework that supports RSCs is github.com/wakujs/waku

Rollup is what powers Vite and it’s the base for so many other tools. youtu.be/azk-GuGiy3E?...

Just wrapped an amazing week at #JSNation and #ReactSummit in Amsterdam! 👨‍🏫 Ran my "React in Patterns" workshop 🧠 Joined the React Ecosystem Contributors Summit 🎤 Spoke on "Using React Without Using React" 💯 Top-notch organization for everyone! 🇳🇱 Hope to be back soon!