Stefano Magni
@noriste.bsky.social
Passionate, positive-minded, Sr Front-end Engineer @ Preply (Design System) / Front-end advisor @ Plannix / ex Hasura (platform team), WorkWave (team leader) / Speaker / Instructor / Writer
Pinned
Stefano Magni
@noriste.bsky.social
· Nov 6
Visual coverage: Why and How Preply Measures the Impact of the Design System
We implemented a custom way to measure the impact of the Design System, and we measure it on user’s devices.
medium.com
My latest/most popular articles:
- Visual coverage: Why and How Preply Measures the Impact of the Design System (+ open source code) medium.com/preply-engin...
- Some things I learnt from working on big frontend codebases dev.to/noriste/some...
Full list+courses+talks github.com/NoriSte/all-...
- Visual coverage: Why and How Preply Measures the Impact of the Design System (+ open source code) medium.com/preply-engin...
- Some things I learnt from working on big frontend codebases dev.to/noriste/some...
Full list+courses+talks github.com/NoriSte/all-...
I want to publicly shout out www.adora.so, definitely one of my favorite products today ❤️
What I love the most is the Slack messages sent to report some UX issues in the product. They are all AI-generated and always relevant, amazing!
What I love the most is the Slack messages sent to report some UX issues in the product. They are all AI-generated and always relevant, amazing!
Adora: Visualize your entire product experience
Every user-journey, every screen, every interaction. Your entire product mapped for you in real-time, overlaid with analytics and replays.
www.adora.so
January 9, 2026 at 9:14 AM
I want to publicly shout out www.adora.so, definitely one of my favorite products today ❤️
What I love the most is the Slack messages sent to report some UX issues in the product. They are all AI-generated and always relevant, amazing!
What I love the most is the Slack messages sent to report some UX issues in the product. They are all AI-generated and always relevant, amazing!
Holy words 👍
This is a lesson to all of you: *talk to people*. Teach yourself to ask. Being annoying is free. Rewriting a month-worth of code is not. There is no better way to level up as an engineer than code review. It starts from how well you're able to plan out the feature and split it.
December 30, 2025 at 6:47 PM
Holy words 👍
In case you missed that maybe the best design system is now open source... 😍
When starting Reshaped, having a paid license kept me going but also felt wrong sometimes. I wanted to give back more to the community. After 5 years – it is finally happening. Reshaped React and Figma libraries are now open-source.
reshaped.so/blog/reshape...
Get the links below ✨
reshaped.so/blog/reshape...
Get the links below ✨
Reshaped is now open-source - Reshaped
After five years of closed-source, Reshaped is finally open for all – both in React and Figma.
reshaped.so
December 13, 2025 at 5:56 AM
In case you missed that maybe the best design system is now open source... 😍
Our MCPs are used in other companies is always interesting 💡
Today, our MCP deepdive is out in @pragmaticengineer.com. Coveringthe on-the-ground realities of building and using MCP servers, the good and the bad) based on input from 40+ devs building MCPs.
Some surprising findings: newsletter.pragmaticengineer.com/p/mcp-deepdive
Some surprising findings: newsletter.pragmaticengineer.com/p/mcp-deepdive
December 10, 2025 at 8:52 AM
Our MCPs are used in other companies is always interesting 💡
TIL: Restart Frame in the Chrome devtools 🤯
blittle.github.io/chrome-dev-t...
thanks to the amazing @stefanjudis.com' newsletter ❤️
blittle.github.io/chrome-dev-t...
thanks to the amazing @stefanjudis.com' newsletter ❤️
Restart Frame | Down and Dirty with Chrome Developer Tools
A deep dive into advanced functionality within the Chrome Developer tools that will enable you to more effectively build and debug web apps. Presented at the 2014 OpenWest Conference.
blittle.github.io
December 8, 2025 at 2:41 PM
TIL: Restart Frame in the Chrome devtools 🤯
blittle.github.io/chrome-dev-t...
thanks to the amazing @stefanjudis.com' newsletter ❤️
blittle.github.io/chrome-dev-t...
thanks to the amazing @stefanjudis.com' newsletter ❤️
TIL the difference, in React Native, between TextInput `inputMode` (similar to Web's `inputmode` which doesn't customize the keyboard reliably, but it adds good screen readers support) and `keyboardType` (simply changes the keyboard).
December 1, 2025 at 11:40 AM
TIL the difference, in React Native, between TextInput `inputMode` (similar to Web's `inputmode` which doesn't customize the keyboard reliably, but it adds good screen readers support) and `keyboardType` (simply changes the keyboard).
Small yet very useful testing suggestion!!!! 👏👏👏
📰 Today, I've got a practical testing tip for you. I've picked this one up relatively recently and I've been using it for testing anything async since. And I think you should use it, too!
Let's talk about the `.resolves` chaining in your assertions.
www.epicweb.dev/prefer-the-...
Let's talk about the `.resolves` chaining in your assertions.
www.epicweb.dev/prefer-the-...
Prefer the `.resolves` Chaining
Improve the error experience when testing asynchronous code with the `.resolves`/`.rejects` chaining.
www.epicweb.dev
November 24, 2025 at 4:51 PM
Small yet very useful testing suggestion!!!! 👏👏👏
I had so much fun chatting with Dan!!! 😍
🎙 New episode of Señors @ Scale is out!
This time with @noriste.bsky.social , Senior Front-End Engineer &
Tech Lead at Preply — we talk about scaling design systems, balancing perfectionism with pragmatism, and working in public.
Watch here 👇
youtu.be/DMF3dOcAbsM
This time with @noriste.bsky.social , Senior Front-End Engineer &
Tech Lead at Preply — we talk about scaling design systems, balancing perfectionism with pragmatism, and working in public.
Watch here 👇
youtu.be/DMF3dOcAbsM
Design Systems at Scale with Stefano Magni, Tech Lead at Preply
YouTube video by Neciu Dan - The Señor Developer
youtu.be
November 4, 2025 at 3:12 PM
I had so much fun chatting with Dan!!! 😍
> Sorry for the spam but I wanted to say kudos for the great storybook documentation 📷 I had to interact with several components for the first time and docs made it way easier.
Sharing the joy we received from a design system user ❤️
Sharing the joy we received from a design system user ❤️
November 3, 2025 at 4:05 PM
> Sorry for the spam but I wanted to say kudos for the great storybook documentation 📷 I had to interact with several components for the first time and docs made it way easier.
Sharing the joy we received from a design system user ❤️
Sharing the joy we received from a design system user ❤️
Unmissable talk for who works on DX and for everyone to understand how the dev tools you use can help your LLM workflow
Netlify CEO @biilmann.blog explains the critical shift from Developer Experience (DX) to the new paradigm of Agent Experience (AX), demonstrating how the next generation of web development tools must be built for AI agents to use effectively.
Full videos in comments 👇
Full videos in comments 👇
October 31, 2025 at 7:16 AM
Unmissable talk for who works on DX and for everyone to understand how the dev tools you use can help your LLM workflow
After a couple of weeks of using it, I can say that the user experience of the DX platform is neat and perfect...
October 25, 2025 at 1:13 PM
After a couple of weeks of using it, I can say that the user experience of the DX platform is neat and perfect...
You can't imagine how much time I spent encouraging engineers to do the same, sharing all the advantages I gained from writing, speaking, and teaching.
It's an advantage for companies too, I've recently given an internal talk at Preply about the hiring benefits with numbers.
x.com/joaoqalves/s...
It's an advantage for companies too, I've recently given an internal talk at Preply about the hiring benefits with numbers.
x.com/joaoqalves/s...
João Alves on X: ".@karpathy says the best way to learn is to build things. He’s right, but as engineers, we know that’s only half the story. Writing, teaching, or preparing a talk forces you to understand what you have built. That’s what this post is about. Link below 👇 https://t.co/zTW4WwUfMD" / X
.@karpathy says the best way to learn is to build things. He’s right, but as engineers, we know that’s only half the story. Writing, teaching, or preparing a talk forces you to understand what you have built. That’s what this post is about. Link below 👇 https://t.co/zTW4WwUfMD
x.com
October 22, 2025 at 1:03 PM
You can't imagine how much time I spent encouraging engineers to do the same, sharing all the advantages I gained from writing, speaking, and teaching.
It's an advantage for companies too, I've recently given an internal talk at Preply about the hiring benefits with numbers.
x.com/joaoqalves/s...
It's an advantage for companies too, I've recently given an internal talk at Preply about the hiring benefits with numbers.
x.com/joaoqalves/s...
Don't miss the latest, amazingly detailed, super in-depth Nadia's article 👏👏👏
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-...
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-...
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...
www.developerway.com
October 22, 2025 at 10:39 AM
Don't miss the latest, amazingly detailed, super in-depth Nadia's article 👏👏👏
I've just applied @simonwillison.net 's Vibe Engineering for delivering a small GitHub Action 😊 simonwillison.net/2025/Oct/7/v...
Vibe engineering
I feel like vibe coding is pretty well established now as covering the fast, loose and irresponsible way of building software with AI—entirely prompt-driven, and with no attention paid to …
simonwillison.net
October 13, 2025 at 10:52 AM
I've just applied @simonwillison.net 's Vibe Engineering for delivering a small GitHub Action 😊 simonwillison.net/2025/Oct/7/v...
Nice morning surprise right after opening Slack 😍
October 13, 2025 at 7:28 AM
Nice morning surprise right after opening Slack 😍
This article contains what I'm re-learning working in a design system team (especially because of the a11y act), after a decade spent in web games and high interactive websites, then a decade on B2B complex apps ♥️
alfy.blog/2025/10/04/h...
alfy.blog/2025/10/04/h...
How Functional Programming Shaped (and Twisted) Frontend Development
alfy.blog
October 10, 2025 at 4:06 AM
This article contains what I'm re-learning working in a design system team (especially because of the a11y act), after a decade spent in web games and high interactive websites, then a decade on B2B complex apps ♥️
alfy.blog/2025/10/04/h...
alfy.blog/2025/10/04/h...
In case you missed that the same @storybook.js.org great DX is coming to React Native..... 😍
Of course, if you can't render your RN components with RN Web, you'll miss what you get from Chromatic but... @dannyhw.com is cooking, look at this bsky.app/profile/nori...
Of course, if you can't render your RN components with RN Web, you'll miss what you get from Chromatic but... @dannyhw.com is cooking, look at this bsky.app/profile/nori...
🆕 Building beautiful components faster with Storybook 9 and Expo
This guest post by @dannyhw.com covers how to:
• Add Storybook 9 to an Expo app
• Catalog UI states and share them with your team
• Distribute Storybook builds using EAS
• Reuse stories for automated tests
expo.dev/blog/storybo...
This guest post by @dannyhw.com covers how to:
• Add Storybook 9 to an Expo app
• Catalog UI states and share them with your team
• Distribute Storybook builds using EAS
• Reuse stories for automated tests
expo.dev/blog/storybo...
Building beautiful components faster with Storybook 9 and Expo
Learn how to set up Storybook 9 in your Expo app to build, test, and share React Native UI components faster and with less friction.
expo.dev
September 26, 2025 at 4:15 AM
In case you missed that the same @storybook.js.org great DX is coming to React Native..... 😍
Of course, if you can't render your RN components with RN Web, you'll miss what you get from Chromatic but... @dannyhw.com is cooking, look at this bsky.app/profile/nori...
Of course, if you can't render your RN components with RN Web, you'll miss what you get from Chromatic but... @dannyhw.com is cooking, look at this bsky.app/profile/nori...
Wait, what?!
The best end-to-end (Figma<>code) Design System, built by one of the most experienced design (and principal) engineer, that used to cost 1K$ because of its quality and completeness, that has plenty of happy clients... Is it now fully open-source? 🤯
x.com/blvdmitry/st...
The best end-to-end (Figma<>code) Design System, built by one of the most experienced design (and principal) engineer, that used to cost 1K$ because of its quality and completeness, that has plenty of happy clients... Is it now fully open-source? 🤯
x.com/blvdmitry/st...
Dima Belyaev on X: "When starting Reshaped, having a paid license kept me going but also felt wrong sometimes. I wanted to give back more to the community. After 5 years – it is finally happening. Reshaped React and Figma libraries are now open-source. https://t.co/1kOhDcBAde Get the links below ✨" / X
When starting Reshaped, having a paid license kept me going but also felt wrong sometimes. I wanted to give back more to the community. After 5 years – it is finally happening. Reshaped React and Figma libraries are now open-source. https://t.co/1kOhDcBAde Get the links below ✨
x.com
September 9, 2025 at 8:17 AM
Wait, what?!
The best end-to-end (Figma<>code) Design System, built by one of the most experienced design (and principal) engineer, that used to cost 1K$ because of its quality and completeness, that has plenty of happy clients... Is it now fully open-source? 🤯
x.com/blvdmitry/st...
The best end-to-end (Figma<>code) Design System, built by one of the most experienced design (and principal) engineer, that used to cost 1K$ because of its quality and completeness, that has plenty of happy clients... Is it now fully open-source? 🤯
x.com/blvdmitry/st...
I wrote about code reviews more than once ( see dev.to/noriste/supp... for example), and I definitely suggest Matthias' article to find key suggestions for reviewers endler.dev/2025/how-to-...
https://dev.to/noriste/suppor…
August 30, 2025 at 4:15 AM
I wrote about code reviews more than once ( see dev.to/noriste/supp... for example), and I definitely suggest Matthias' article to find key suggestions for reviewers endler.dev/2025/how-to-...
In 20 minutes, I didn't get to make react-scanner work with Oxc Parser (www.npmjs.com/package/oxc-.... but given that Oxc Parser claims that
> the AST conforms to @typescript-eslint/typescript-estree's TS-ESTree format.
It's just a matter of dedicating a bit more time 😍
> the AST conforms to @typescript-eslint/typescript-estree's TS-ESTree format.
It's just a matter of dedicating a bit more time 😍
www.npmjs.com
August 21, 2025 at 5:30 AM
In 20 minutes, I didn't get to make react-scanner work with Oxc Parser (www.npmjs.com/package/oxc-.... but given that Oxc Parser claims that
> the AST conforms to @typescript-eslint/typescript-estree's TS-ESTree format.
It's just a matter of dedicating a bit more time 😍
> the AST conforms to @typescript-eslint/typescript-estree's TS-ESTree format.
It's just a matter of dedicating a bit more time 😍
"What I Wish Someone Told Me When I Was Getting Into ARIA"
Definitely the best practical article I've ever read about ARIA 😍
www.smashingmagazine.com/2025/06/what...
via @stefanjudis.com of course 😎
Definitely the best practical article I've ever read about ARIA 😍
www.smashingmagazine.com/2025/06/what...
via @stefanjudis.com of course 😎
What I Wish Someone Told Me When I Was Getting Into ARIA — Smashing Magazine
[Accessible Rich Internet Applications (ARIA)](https://www.w3.org/WAI/standards-guidelines/aria/) is an inevitability when working on web accessibility. That said, it’s everyone’s first time learning ...
www.smashingmagazine.com
August 14, 2025 at 5:32 AM
"What I Wish Someone Told Me When I Was Getting Into ARIA"
Definitely the best practical article I've ever read about ARIA 😍
www.smashingmagazine.com/2025/06/what...
via @stefanjudis.com of course 😎
Definitely the best practical article I've ever read about ARIA 😍
www.smashingmagazine.com/2025/06/what...
via @stefanjudis.com of course 😎
Well, @storybook.js.org's Danny is cooking something veeeeeeery interesting 🤩
- Interaction tests function for React Native github.com/storybookjs/...
- Screenshot testing for React Native github.com/dannyhw/rn-s...
- Interaction tests function for React Native github.com/storybookjs/...
- Screenshot testing for React Native github.com/dannyhw/rn-s...
feat: experimental playfn by dannyhw · Pull Request #751 · storybookjs/react-native
Issue: #734
What I did
playfnexample.mp4
How to test
Please explain how to test your changes and consider the following questions
Does this need a new example ...
github.com
August 11, 2025 at 7:43 AM
Well, @storybook.js.org's Danny is cooking something veeeeeeery interesting 🤩
- Interaction tests function for React Native github.com/storybookjs/...
- Screenshot testing for React Native github.com/dannyhw/rn-s...
- Interaction tests function for React Native github.com/storybookjs/...
- Screenshot testing for React Native github.com/dannyhw/rn-s...
How do you (automatically) test your React Native components' a11y? Join the discussion on @storybook.js.org 's Discord channel 😊
discord.com/channels/486...
discord.com/channels/486...
Discord - Group Chat That’s All Fun & Games
Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and hang out.
discord.com
August 8, 2025 at 9:38 AM
How do you (automatically) test your React Native components' a11y? Join the discussion on @storybook.js.org 's Discord channel 😊
discord.com/channels/486...
discord.com/channels/486...
Learning on the go: this Rating component (it's interactive, and it has tooltips for each star) is so "anonymous" (from an HTML perspective) that Axe can't even detect a11y violations 😅
August 8, 2025 at 9:18 AM
Learning on the go: this Rating component (it's interactive, and it has tooltips for each star) is so "anonymous" (from an HTML perspective) that Axe can't even detect a11y violations 😅