Style Observer: A Library to Observe CSS Property Changes — Lea Verou is a developer who’s easy to admire because whenever she sets out to solve a problem, the results are always fully formed with no cut corners. So it goes with this ‘exhaustively tested’ JS library for observing changes to CSS properties which deftly handles lots of browser quirks. See the project homepage for more. (TIL there’s a .style TLD!)

Lea Verou

Build Better with AWS, Using Tips and Tools from the Developer Center — Get hands-on with DevOps, Data & ML, and Generative AI. Use any language, level up your skills. Connect with like-minded devs all over the world on AWS Communities. The AWS Developer Center has everything you need in one place. Don’t miss out!

AWS sponsor

Why to Move On to 'ESM-Only' — The march to using ES modules has been going on for years, but if you’re still holding out, there’s probably a good reason why? However, while you can maintain packages supporting both ESM and CommonJS, Anthony thinks it’s time to go ‘ESM only’ and explains why.

Anthony Fu

How and Why to Build 'Copy Code' Buttons — A commonly encountered way to give readers easier access to source shared on the Web. David Bushell has an interesting followup reflecting on his own experiences implementing the same feature.

Salma Alam-Naylor

The RegExp Escaping ECMAScript Proposal — RegExp.escape() is a function to create an escaped version of a supplied text that matches itself when used as, or in, a regular expression. Axel has also written an implementation in plain JS to get a feel for how it works.

Dr. Axel Rauschmayer

Build a Next.js Sign-Up Form with React Hook Form — Features progressive enhancement, dynamic validation, and secure password handling with Argon2.

Clerk sponsor

How to Start a React Project in 2025 — While there are many ways to start a React project, Robin examines the pros and cons of a few popular approaches.

Robin Wieruch

Learning How to Build Modern Web Extensions — It’s easy to run into outdated docs when building extensions. Lucky for us, Hui has been through the process and shares some tips.

Hui Jing

Testing 10 JavaScript Frameworks on Their HTML Defaults — Using a JavaScript framework is now ‘the way’ for many Web site developers, but how do the popular options fare at producing valid, error free HTML?

Jens Oliver Meiert

Ohm: A Parsing Toolkit for JavaScript and TypeScript — It’s been a few years since we covered this project and it’s come along a lot. It’s a library for building PEG-based parsers you can use in interpreter, compilers, analysis tools, etc. and you can even play with its grammar online.

Warth, Dubroy, et al.

Start Selling to Enterprise Faster with WorkOS — Add SSO, SCIM, and RBAC to your B2B SaaS app in minutes—not months.

WorkOS sponsor

Human Regex: Human-Friendly Regular Expression Builder with English Syntax — After 8 years of Perl, regexes are my friend, but most developers aren’t big fans? This library offers a natural, fluent approach. Magic Regexp and Super Expressive are alternatives to consider.

Ridwan Ajibola

Svader: Create GPU-Rendered Svelte Components — The examples are a good way to get a feel for what this offers.

Holger Dal Mogensen

web-worker 1.5: Consistent Web Workers for the Browser and Node — Want to publish npm modules that use Web Workers and that work in both Node and client-side? In Node, it works as a web-compatible Worker implementation atop worker_threads. In the browser, it’s an alias for Worker.

Jason Miller

The React Data Table I Always Wanted — A look into a particularly fast and clean shadcn/ui-based data table component (GitHub repo). See a live demo.

Maximilian Kaske

GitHub Extends Its Monaspace Font Family — Monaspace is a fantastic set of monospaced fonts from GitHub targeted at coding use cases. Its new v1.2 release ups the ante by including Nerd Fonts support and symbols, new box drawing glyphs, characters, character variants, ligatures, and more.

GitHub