~javascriptweekly | Bookmarks (201)

🎵 Communicate with Ableton Live via WebSockets — Ableton Live is a popular DAW (digital audio workstation) and this opens up a way to control it from JavaScript.

Node.js Testing Best Practices — A detailed guide to modern testing in Node from a group of developers who know all about it. It’s on GitHub, but essentially written like a free book covering over 50 battle-tested tips covering areas as diverse as the ‘Testing Diamond’, testing microservices, and simulating flaky networks.

Comparing Tauri and Electron for Building Desktop Apps — Electron is a natural choice for building JS and HTML-powered cross-platform desktop apps but numerous alternatives have appeared like Neutralinojs and the Rust-based Tauri. This post does a good job of quickly showing how Tauri differs and why you might choose it.

Mastering Default Values with Nullish Coalescing (??) — Matt’s a big fan of the ?? operator over the || approach, largely due to JavaScript’s ideas of what it considers ‘falsy’.

How Clerk Integrates with a Next.js Application Using Supabase — Learn how Supabase + Clerk work with Next.js to increase security and reduce development hours.

Accelerating Large-Scale Test Migration with LLMs — How Airbnb completed its first large-scale, LLM-driven code migration in moving from Enzyme to React Testing Library.

React Reconciliation: The Hidden Engine Behind Your Components — React uses a reconciliation algorithm to update the DOM based on changes to the virtual DOM. Understanding how it works is essential for producing faster apps.

Hiding Elements That Require JavaScript Without Using JavaScript — If you’ve got non-essential features that require JavaScript and you want to hide them for users who have JavaScript disabled for whatever reason, this is a tidy old-school way to do it.

Next.js 15.3: Now Including Turbopack Builds — The popular React framework now includes alpha support for using Turbopack for much faster production builds (especially if you have lots of cores available), community support for Rspack, and new navigation hooks.

Chrono 2.8: A Natural Language Date Parser — Give it a string like “today”, “last Friday”, “2 weeks from now”, or even an entire date and time, and it’ll come up with a date object to suit.

Breakpoints and console.log Is the Past, Time Travel Is the Future — 15x faster JavaScript debugging than with breakpoints and console.log, supports Vitest, Jest, Karma, Jasmine, and more.

🤖 Firebase Studio: Google's New Agentic AI-Powered Development Environment — Buzzing from the success of Gemini 2.5 Pro for dev tasks, Google’s Firebase team gets in on the AI development action with a Cursor/v0/Lovable-a-like of its own for building apps in the browser.

Some Features Every JavaScript Developer Should Know in 2025 — A quick list post breezing through a few more modern areas of JavaScript including iterator helpers, structuredClone(), and set operations.

Next.js Fundamentals, v4 — Master Next.js with Scott Moss. Learn React Server Components, Server Actions, dynamic routing, authentication, caching, and edge functions. Create a modern React app, deploy it to Vercel, and level up your skills.

An Update on the Deno v Oracle JavaScript™ Fight — Deno filed a petition with the USPTO to cancel the 'JavaScript' trademark, as claimed by Oracle, and Oracle stepped up to fight back. Ryan recaps the basic story and asks for help to get the word out (signing the open letter is a great start, if you agree Oracle abandoned the trademark).

AG Grid: The Best JavaScript Data Grid In The World — Create high-performance data grids with our open-source library, trusted by 90% of the Fortune 500. Add advanced features like Integrated Charting, Grouping, Pivoting and more with a few lines of code. Supports React, Angular and Vue. Try for free.

React 19.1 Released — The headline feature is Owner Stacks, a dev-only feature to track which components are responsible for rendering other components. 19.1 also brings fixes, small additions (like support for streaming in edge environments), a new API for prerendering RSCs on the server, and enhanced Suspense support.

Could JavaScript Have Synchronous await? — Dr. Axel reflects on the problems around async code being different to synchronous code and ways around the limitations faced. What could the consequences of a synchronous await be?

JavaScript's Missing Link? Wasp Offers a Full Stack Solution — A look at what the Wasp team is trying to do building a full-stack webapp framework around React, Node, and Prisma. It’s a powerful option if you’re looking for a more traditional-feeling full-stack approach.

Anime.js 4.0: A JS Animation Library for the Web — If you’re tired of Web animations, maybe Anime.js will refresh your appetite. This is a major upgrade to a mature library for animating CSS properties, SVGs, the DOM, and JS objects. It’s smooth, well-built, and now complete with fresh documentation.

Learn How to Integrate Clerk with Lovable — Lovable integrates Clerk for custom domains, streamlined auth flows, and waitlist-powered onboarding.

Milkdown 7.7: WYSIWYG Markdown Editor Framework — A WYSIWYG Markdown editor framework based around a plugin system that enables a high level of customization. The docs are rendered by Milkdown itself. GitHub repo.

TinyBase v6.0: A Reactive Data Store for Local-First Apps — We’re huge fans of this powerful reactive data store that can be used as the entire backend for many types of app. v6.0 adds no new functionality but brings React 19 support and goes ESM-only. Check out the homepage for more.

Bare: A New Lightweight Runtime for Modular JS Apps — Imagine something like Node.js but really stripped back: bare, if you will. Like Node, it’s built on top of V8 and libuv (though it's designed to support multiple JavaScript engines) but Bare’s approach is to provide as little as possible (a module system, addon system, and thread support) and then rely upon userland modules...