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
1. Bring everything you learned about software testing. 2. Apply it to either your skill or your harness to measure effectiveness and prevent regressions This article by Anthropic does it with tons of links and examples from past experience www.anthropic.com/engineering/...
Demystifying evals for AI agents
Demystifying evals for AI agents
anthropic.com
A great, great piece from one of my favorite Product guys. The thread contains the TL;DR, but at the end there's the detailed article x.com/i/status/206...
Marco Pesani on X: "A trustworthy agent is not an agent that is always right. It is an agent that makes it cheap to notice when it is wrong. Six patterns that make agent output trustworthy, not just fluent:" / X
A trustworthy agent is not an agent that is always right. It is an agent that makes it cheap to notice when it is wrong. Six patterns that make agent output trustworthy, not just fluent:
x.com
Good overview, and useful mental model, around harness engineering
Coração Tricolor@amilnyleve.bsky.social · 4mo agoNice short talk about - harnesses via PI state machines - optimized skills and evals around them www.youtube.com/watch?v=vy7o...
How I deleted 95% of my agent skills and got better results — Nick Nisi, WorkOS
YouTube video by AI Engineer
youtube.com
Only golden articles from Nadia 😊
Nadia Makarevich@adevnadia.bsky.social · 4mo agoBeen processing an unreasonable amount of information on everything AI-related lately, here's the result ☺️ Ever wondered why your clever chat and code assistants are so dumb sometimes? I'm on a mission to answer that with research and data! www.developerway.com/posts/how-ai...
Tests have always been key for a quick and safe SDLC, and AI amplifies this good practice. Here you can find a great list of high quality contents and a course around the topic (I also suggest "The Art of Unit Testing" book) x.com/i/status/205... By @kettanaito.com
Artem Zakharchenko on X: "More and more people are asking me about testing resources so let's put everything I've written in one post. Bookmark, share, and, most importantly, please read these. The True Purpose of Testing https://t.co/qFop2Xt1SJ Developers often overlook the fundamentals and rush into https://t.co/jKeEFVMbVK" / X
More and more people are asking me about testing resources so let's put everything I've written in one post. Bookmark, share, and, most importantly, please read these. The True Purpose of Testing https://t.co/qFop2Xt1SJ Developers often overlook the fundamentals and rush into https://t.co/jKeEFVMbVK
x.com
Very very very good read, I personally experienced both situations (me learning a lot while using LLMs, but also me not learning much and not being able to elaborate on why some changes have been made) x.com/i/status/205...
x.com
Interesting article: the 100% code coverage is controversial, but it makes a lot of sense, actually bits.logic.inc/p/ai-is-forc...
AI Is Forcing Us To Write Good Code
When Best Practices Are Best
bits.logic.inc
Omlet is now open source!!!!! Self-hosting it is free; they are winding down Omlet as a business omlet.dev/blog/omlet-o... This move makes a lot of sense to me nowadays...
Omlet is going open source
Measure the Success of Your Components
omlet.dev
Always check, introducing true negatives, that LLMs catch failures in the success criteria you give them. I'm not surprised by their creativity, but let's not joke about what I use to verify their work 😅
Don't miss this platform execution master piece, from one of the masters 😎 www.youtube.com/watch?v=D6ys...
Killing Micro Frontends How Radical Simplification 10x'd Our Frontend Velocity - Nicolas Beaussart
YouTube video by BeJS
youtube.com
Nicolas Beaussart@beaussan.io · 4mo agoThanks a lot React Paris for having me! It was a great conference, with amazing folks joining! Also, thank you everyone that gave me amazing feedback on my talk! I'm glad it resonated with soo many of you! Here are the slides if you missed it! beaussan.io/talks/2026/r...
This includes a very productive, data-first, backend-isolated, way of working. x.com/i/status/202... I shared a similar approach back in the days, and the suggested approach automates the most annoying (yet important) part: typing that mocks (dev.to/noriste/fron...) Via @kettanaito.com
Front-end productivity boost: Cypress as your main development browser
Productivity, productivity, and productivity: how you should leverage a testing tool like Cypress as...
dev.to
On native HTML dialog vs JS ones..
Devon Govett@devongovett.me · 5mo agoI'm often asked why you would use a JS library like React Aria for modals instead of the HTML <dialog> element, so I wrote up a detailed response. One of the main features of <dialog> (top layer) is also one of its weaknesses. github.com/adobe/react-...
Well, with 1. Perfect API docs 2. Extensive usage across the web 3. Perfect tests 4. Good understanding and taste Your limit is the sky. Rewriting Next.js with Vite is a good example, don't miss the second part of the article about "how was this possible?" 😍
News 📰@some-news.bsky.social · 5mo agoOne engineer used AI to rebuild Next.js on Vite in a week. vinext builds up to 4x faster, produces 57% smaller bundles, and deploys to Cloudflare Workers with a single command.
Definitely the best ever article I read about OKRs 🤯 medium.com/pathtoproduc...
So What are OKRs? A Beginner’s Primer
For anyone new to building OKRs (Objective and Key Results), this primer will set you up to understand the “why” and “how” behind OKRs.
medium.com
Codex PR review for me has an incredibly high signal/noise ratio, catching also cross-module mistakes 😍
> It is about teaching at the exact moment you need to learn. This is one of my favourite articles about how to effectively use AI nowadays 😍 x.com/shuding/stat...
x.com
Short and effective article about Slot/asChild composition patterns ♥️ boda.sh/blog/react-s...
React Slot/asChild Composition Pattern
Introductory guide on Radix UI Slot/asChild, clsx, forwardRef and Base UI useRender/mergeProps
boda.sh
Two great @sarasoueidan.com articles I read and loved before implementing alert banners at the top of the page for Preply's users 😍 www.sarasoueidan.com/blog/accessi... www.sarasoueidan.com/blog/accessi...
Accessible notifications with ARIA Live Regions (Part 1)
— The personal website of Sara Soueidan, inclusive Web UI engineer
sarasoueidan.com
I tried out Guidepup virtual screen reader in Storybook to test how components are announced scottnath.com/blahg/virtua... The prerequisites are great, but I didn't get it reading the current state of the DOM after interacting with it, bummer!
Simple setup: Virtual Screen Reader in Storybook
How to set up Storybook with Guidepup's Virtual Screen Reader and test what the screen reader speaks
scottnath.com
And... right before the holidays, one of our team shared the love they put into testing before shipping, including investing a lot in @storybook.js.org, of course 😍
Stefano Magni@noriste.bsky.social · 7mo agoTwo Preply's engineers undertook a huge project: providing all front-end developers with a way to effectively test their front-end applications, leveraging and betting on @storybook.js.org , and then documenting everything in an amazing article 😍 medium.com/preply-engin... 👇
Two Preply's engineers undertook a huge project: providing all front-end developers with a way to effectively test their front-end applications, leveraging and betting on @storybook.js.org , and then documenting everything in an amazing article 😍 medium.com/preply-engin... 👇
Front-end testing at Preply: shifting left towards component testing
Co-authored by Lukasz Rados
medium.com
Finally you can throttle individual Network requests in Google Chrome Dev tools 🎉 developer.chrome.com/blog/new-in-...
What's new in DevTools, Chrome 144 | Blog | Chrome for Developers
Chrome DevTools MCP server, individual request throttling, adopted stylesheets and 2025 highlights.
developer.chrome.com
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!
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.
adora.so
Great read for tech leads 👏👏👏 world.hey.com/joaoqalves/t...
Traits of a good Tech Lead
The software development industry during the 2010–2020 decade created roles such as Engineering Manager (EM) and Tech Lead (TL). People had already been using one or the other, but during that decade,...
world.hey.com
In case you missed that maybe the best design system is now open source... 😍
Dima Belyaev@blvdmitry.me · 11mo agoWhen 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 ✨
Our MCPs are used in other companies is always interesting 💡
Gergely Orosz@gergely.pragmaticengineer.com · 8mo agoToday, 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
TIL: Restart Frame in the Chrome devtools 🤯 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
