Krasimir
@krasimir.bsky.social
Senior engineer. Book author. Speaker. Serial SaaS builder.
🏁 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. 🚀
See you in 2026 — and yes, you can hire me to bring this workshop to your event. 🚀
December 5, 2025 at 8:09 AM
🏁 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. 🚀
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!
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!
December 4, 2025 at 12:26 PM
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!
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!
Reposted by Krasimir
🎢 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.
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.
Fundamentals, practice and progress: Lessons from 20+ years of change
May 27-29, 2026
webexpo.net
December 2, 2025 at 7:26 AM
🎢 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.
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! 🙌
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! 🙌
December 1, 2025 at 9:35 AM
🚀 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! 🙌
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! 🙌
Reposted by Krasimir
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/
🧩 Dive deep into server-side rendering with pure JS & Node.
Join https://reactadvanced.com/
November 21, 2025 at 2:01 PM
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/
🧩 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
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
November 12, 2025 at 9:42 AM
🔥 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
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? 😎
November 10, 2025 at 8:11 AM
🤘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!
P.S.
By the way, you could attend remotely!
October 29, 2025 at 2:02 PM
🚀🤩 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!
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🤞.
October 6, 2025 at 6:31 AM
🚀🎊 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🤞.
Reposted by Krasimir
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
https://gitnation.com/contents/using-react-without-using-react
September 29, 2025 at 2:00 PM
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
https://gitnation.com/contents/using-react-without-using-react
Holy cow ... done with WebGL and Three.js 👉 messenger.abeto.co
Messenger
It's a small planet, but someone's gotta make the deliveries.
messenger.abeto.co
September 28, 2025 at 7:52 AM
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
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
React Server Components support
Can I use React Server Components (RSCs) today. A project that shows the support of RSCs across the frameworks and libraries.
rsc.krasimirtsonev.com
September 15, 2025 at 12:04 PM
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
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...
AgentHopper: An AI Virus (Proof-of-concept Research Project)
YouTube video by Embrace The Red
www.youtube.com
September 13, 2025 at 1:40 PM
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
It's about supporting React Server Components without a framework. #rsc #react #javascript
React Server Components support without a framework
React Server Components support without a framework / I was at ReactSummit this June and spoke with some folks from Vercel about Next.js and RSC support outside of the framework. I really wanted to tr...
krasimirtsonev.com
September 2, 2025 at 7:41 PM
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
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...
September 2, 2025 at 4:46 AM
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/
State of CSS 2025
2025.stateofcss.com
August 29, 2025 at 11:11 AM
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
August 18, 2025 at 8:52 AM
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
2 days of patterns, SSR, RSC, state mgmt, testing & real-world app building.
Let’s level up together! 💪 trifork.nl/academy/our-...
#React #Amsterdam
July 30, 2025 at 12:30 PM
🚀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
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...
More about it here: developer.mozilla.org/en-US/docs/W...
July 13, 2025 at 5:21 PM
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...
More about it here: developer.mozilla.org/en-US/docs/W...
Be honest! When was the last time when you click on that "2"?
July 7, 2025 at 4:07 PM
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.
July 2, 2025 at 6:07 PM
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 :)
June 25, 2025 at 7:45 AM
🏝️🍹⛱️🌞🌊 @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! 👋
Topics include AI/ML, front-end, back-end, DevOps, leadership & more.
Check out www.challengeaccepted.dev — come say hi if you're around! 👋
June 23, 2025 at 8:51 AM
👋 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! 👋
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
GitHub - wakujs/waku: ⛩️ The minimal React framework
⛩️ The minimal React framework. Contribute to wakujs/waku development by creating an account on GitHub.
github.com
June 21, 2025 at 3:30 PM
I'm just passing by to say that another framework that supports RSCs is github.com/wakujs/waku
The Story of Rollup with Rich Harris
YouTube video by CultRepo (formerly Honeypot)
youtu.be
June 21, 2025 at 9:16 AM