~javascriptweekly | Bookmarks (209)

🔎 Fuzzball: Fuzzy String Matching Library — To tackle those cases where what’s typed isn’t quite what’s wanted. There’s a neat tree-themed Web-based demo.

Master Chrome's DevTools — Join Jon Kuperman for this video course diving into Chrome's DevTools. You'll go beyond console.log(), learning how to inspect, debug, and audit your web apps — tracking performance, identifying bottlenecks, making performance gains, and more. Level up your DevTools skills.

War Story: The Hardest Bug I Ever Debugged — A former engineer on the Google Docs team tells the tale of a bizarre error that afflicted Google Docs out of the blue about ten years ago. It’s a gnarly one and was only solved due to his swift access to V8’s engineers. If you’ve ever spent hours digging into a bug, you’ll feel glad...

Next.js's Recent Middleware Security Woes — Last weekend, a new version of Next.js landed to resolve a security vulnerability that could allow middleware to be bypassed. Self-hosted Next.js deployments need to be upgraded immediately. The news led to many responses including deep dives into the vulnerability and criticism of how it was all handled.

Writing a Tiny Undo/Redo Stack in JavaScript — You might prefer to lean upon an established approach (using Immer patches perhaps), but if you want to implement something small yourself, this might help.

Land Ahoy: Leaving the Sea of Nodes — A deeply technical post from a core member of the V8 JavaScript engine team that explains the limitations of Turbofan, one of V8’s optimizing compilers. If you don’t care for the internals of how your JavaScript is compiled and run, just be assured the V8 team is working to make it run even faster.

Mission jQuery Zero: How FreeAgent Removed jQuery From Its App — Despite popular developer sentiment, jQuery’s prevalence on the Web continues to be significant but “sometimes legends need to retire”.

▶  React Query API Design: Lessons Learned — You might know Dominik for all his work on React Query, TanStack Router, and his epic React Query - The Bad Parts series. Here, he walks us through the design choices made while building React Query and shares lessons and mistakes valuable to anyone building their own libraries. (30 minutes.)

Deploying a Next.js App to Production on Any Server — A popular article from last year that’s been updated for 2025 and Next.js 15.

Babylon.js 8.0: Microsoft's JavaScript 3D Engine — 8.0 adds support for improved ‘image based lighting’ and ‘area lights’ for environmental lighting and shadows, extra control of the render pipeline, and a new lightweight viewer. And, as always, they have ▶️ a short video showing it all off.

🤖 An MCP Server for Playwright and Browser Automation — MCP (Model Context Protocol) servers enable certain LLM-based agents (such as Claude, Claude Code, and Cursor) to perform actions on a system outside of their usual sandbox. This new project from Microsoft enables such LLMs to interact with browsers via Playwright.

Lexical 0.29: An Easy-to-Extend Text Editor Framework from Meta — A text editor framework built by Meta with extensibility, accessibility, and cross platform support in mind (there’s even a Swift variant for iOS). There’s a live playground if you want to give it a try.

⭐ The State of Vue.js Report 2025 — Created with the support of the Vue and Nuxt teams, this is no mere collection of statistics and charts (though there’s plenty of both) but a thorough update on the state of both projects and an interview with Evan You on Vue (and Vite's) latest developments. Essential reading for any Vue, Vite, or Nuxt user and a...

Next.js vs TanStack — An incisive essay from a developer who’s had enough of the Next.js approach and has found solace in the approach offered by the increasingly capable TanStack collection of tools (as well as Vite).

The Great ESLint v9 Migration Adventure: A Developer's Survival Guide — “Let’s just say… I’ve seen things. I hit all the bumps, took all the wrong turns, and somehow made it to the other side—so you don’t have to.”

React Trends in 2025 — Each year Robin does a post giving his opinion on what trends he sees arising over the next year. Last year, he put his money on Astro, RSCs, Vercel, and Biome – this year he points at React Server Components, shadcn/ui, TanStack Start, React Router, and more.

Build a Custom RAG AI Agent with TypeScript and Jupyter — Deno, Ollama, and a few different AI models come together in this tutorial for storing document embeddings in a vector store and querying them for use in a basic agent.

Introducing Motion for Vue — Motion is a popular and powerful animation library most commonly associated with React, but now there’s a new Vue flavor and it’s feature complete, too.

Reveal.js 5.2: The HTML Presentation Framework — Brings elegant presentations to anyone with a Web browser. v5.2 adds the ability to trigger ‘lightboxes’ where viewers can see images and videos in a way where they stand out more.

Introducing @clerk/agent-toolkit — Build agentic systems with support for user and organizational management. Compatible with Vercel's AI SDK and LangChain.

Konva: A JavaScript 2D Canvas Library — The native API for Canvas elements is pretty good, but Konva is a popular abstraction that sits on top and provides a more structured way to work with shapes, styling, events, animations, and more (lots of demos with code). It also has extra integration libraries for Vue, Svelte and React.

Typist 8.0: Tiptap-Based Rich Text Editor Component — Simple and opinionated. You can try several examples linked in the sidebar. Well suited for basic rich text situations like writing comments or messages and has a single-line mode. GitHub repo.

PeanoScript: TypeScript But It's a Theorem Prover — An experimental proof assistant for Peano arithmetic based on TypeScript syntax.

Rsdoctor 1.0: An Analyzer for Rspack and Webpack — A one-stop, intelligent build analyzer making it easier to identify bottlenecks and optimize performance. It’s part of the same family of tools as Rspack (a Rust-powered web bundler) but is fully webpack compatible. If you’ve ever asked why your build times are too long, this is for you.