AI makes experienced open-source devs… slower?!🐢

We might feel more productive with AI—but the data says otherwise:

A new METR study found that when devs use AI tools, they take 19% longer than without.

Maybe AI’s real superpower is making us believe it’s a superpower.

🔗 metr.org/blog/2025-07...

Son défi : traverser les routes du Sud des États-Unis à pied avec un t-shirt « Black Lives Matter »

My latest article is out! I dive into the world of database query builders, comparing **Kysely** and **Drizzle ORM**. If you're wondering which one is right for your next TypeScript project, give this a read!
[https://marmelab.com/blog/2025/06/26/kysely-vs-drizzle.html](marmelab.com/blog/2025/06...)

📣 Le Palais de la Découverte a besoin de vous !

Musée de sciences installé à proximité des Champs-Élysées, il attire les curieux et férus de science depuis son ouverture en 1937.
Fermé depuis 2020 pour rénovation, sa réouverture est aujourd'hui menacée.

console.log() is probably the first function I ever used in Node.js...

And yet, I was today years old when I learned it supports format strings! 🤯

🧵👇

⚛️📝 New on Overreacted: What Does "use client" Do?

📢 New blog post: "Testing Zero: @rocicorp.dev's Ultra-Fast Sync Engine for the Web"🏃‍♂️‍➡️

What is Zero❓

Zero is a new general-purpose sync engine for the web that promises instant response time for almost all user interactions.

But does it deliver?🤔 We put it to the test!

marmelab.com/blog/2025/02...

Just discovered react-scan: a tool that automatically detects performance issues in your #React app.

It visually highlights component re-renders, helping you spot performance issues at a glance. Simple & effective!

Great work! 👏 @aidenybai.bsky.social

🔗 github.com/aidenybai/re...

How to Build a CMS With React-Admin, by @thibault-barrat.bsky.social (@marmelab@mastodon.social):

Born at Netscape in just 10 days (as legend says) back in 1995, it now powers production servers and the modern web. Here’s to 29 years of interactivity, innovation, and countless console.log()s! 🖥️ #HappyBirthdayJS

On est allé à une superbe conf avec @guilbill.bsky.social !

Nouvelle vidéo sur les alternatives à Twitter (et autres), qui affirment être des réseaux sociaux décentralisés !!

Avec un message clair : @bsky.app est nettement le plus prometteur.

Cependant, il reste encore un énorme chantier à accomplir pour sécuriser Bluesky.
tournesol.app/entities/yt:...

Chrome DevTools Local Overrides: Mock APIs, edit CSS/JS, and fix bugs locally without touching production. Override headers (e.g., CORS) and content (e.g., JSON, style). It’s like debugging superpowers. ✨ #WebDev #DevTools

This is a quality article by @samwho.dev, very nice reading and the interactive examples are a gem, check it out! encore.dev/blog/queueing

How to build efficient #GenAI programs?

🏗️ Break the problem into smaller sub-tasks
⚙️ Implement #LLM Orchestration
🚨 Establish robust error handling
🕵🏻 Evaluate your LLM setup regularly
💸 Monitor costs closely

Check out our latest article on this topic👇
marmelab.com/blog/2024/10...