fidzu : javascript

#​775 - March 3, 2026

Read on the Web

JavaScript Weekly

Bun v1.3.10 Released: A Surprisingly Big Update - Bun's REPL has been completely rewritten with many improvements (both practical and cosmetic), there's a --compile --target=browser option for building self-contained HTML files with all JS, CSS, and assets included (ideal for simple JS-powered single page apps), full support for TC39 stage 3 ES decorators, a faster event loop, barrel import optimization, and more.

Jarred Sumner

Still Writing Tests Manually? Meticulous AI Is Here - Notion, Dropbox, Wiz and LaunchDarkly now use a testing paradigm they can't work without. Built by former Palantir engineers, Meticulous automatically creates an evolving suite of E2E UI tests, delivering exhaustive coverage with no developer effort.

Meticulous sponsor

External Import Maps, Today! - Several weeks ago Lea posted about web dependencies being broken, but now she has a solution. The core technique employed to emulate support for external import maps isn't obvious, despite being simple, but is already offered by JSPM 4.0.

Lea Verou

IN BRIEF:

• The React Foundation has officially launched taking over ownership of React, React Native and JSX. It has a board of eight founding members (including Meta) with Seth Webster, former head of React at Meta, as exec director.

• It's not formal yet, but this preview post reveals how Node.js's release schedule is changing later this year (one major release per year, every release to be LTS, with no more odd/even distinction).

• 📢 Monthly roundups have landed from Svelte, ViteLand / VoidZero, and Astro.

• 🔒 The Angular team explains two recently patched vulnerabilities in Angular.

• The Navigation API is now Baseline Newly Available across all major browsers.

RELEASES:

• Deno 2.7 - The alternative runtime stabilizes Temporal API support, supports Windows on ARM, adds package.json overrides support, and more.

• Expo SDK 55 - The popular React Native framework/toolchain.

• Shiki 4.0 - TextMate grammar powered, VS Code-like syntax highlighter.

• Angular 21.2, Mediabunny 1.35, Neo.mjs 12.0

📖 Articles and Videos

Making WebAssembly a First-Class Citizen on the Web - WASM has come a long way but remains tricky to work with on the Web, with even performing a console.log requiring a lot of glue code. Ryan makes the case that the WebAssembly Component Model could change this by letting modules bind directly to browser APIs, load directly from script tags, and more.

Ryan Hunt

We Deserve a Better Streams API for JavaScript - "I'm publishing this to start a conversation," says James who shows off an alternative approach to Web streams that works around the current standard's "fundamental usability and performance issues." The end results and James' extensive experience in this area make for a compelling argument.

James M Snell

npx workos: An AI Agent That Writes Auth Directly Into Your Codebase - Reads your project, detects your framework, writes the integration, then typechecks and fixes its own build errors.

WorkOS sponsor

The Illusion of JavaScript-Powered 'DRM' - An explanation of why building a DRM/copy protection system purely in JavaScript (rather than EME-based approaches) is ultimately just "sophisticated friction", at best, and uses a tale of breaking a (NSFW) platform's protection to make the point.

Ahmed Arat

How Cloudflare Rebuilt Next.js with AI in a Week - vinext is an experimental, Vite-based reimplementation of Next.js's API surface, letting existing apps run in more environments, though with some tradeoffs.

Steve Faulkner (Cloudflare)

Using Val Town to Get Me to the Movies - Val Town is a fantastic platform for quickly writing and deploying JavaScript-powered services. Like this one!

Raymond Camden

📄 Sticky Grid Scroll: Building a Scroll-Driven Animated Grid - I'm not a huge fan of scroll-driven effects, but this one does look neat. Theo Plawinski

📄 From instanceof to Error.isError for Safer Error Checking Matt Smith

📄 Proxying Fetch Requests in Server-Side JavaScript Nicholas C. Zakas

▶️ Why I Chose Electron Over Native (And I'd Do It Again) Syntax Podcast

📄 Using React Native to Create Meta Quest VR Apps Chludziński, Jaworski, and Leyendecker

🛠 Code & Tools

txiki.js: A Small, Powerful JavaScript Runtime - Stands on the shoulders of QuickJS-ng and libuv and aims to support the latest ECMAScript features while being WinterTC compliant. GitHub repo.

Saúl Ibarra Corretgé

numpy-ts: A NumPy Implementation for TypeScript - A recreation of NumPy, a fundamental piece of the Python scientific computing ecosystem, that works in the browser, Node, Bun, and Deno. 94% of NumPy's API is covered so far and there's an online playground to give it a try.

Nicolas Dupont

Ship Real-Time Features Without Real-Time Complexity - TimescaleDB extends Postgres: hypertables, 95% compression, continuous aggregates. Run analytics on live data. Try free.

Tiger Data (creators of TimescaleDB) sponsor

Yoopta Editor 6.0: A Headless Rich Text Editor for React - MIT-licensed library for creating block-based, Notion-style rich text editing experiences. It's headless at heart, but comes with a variety of UI components to get started fast. The playground offers a live example.

Akhmed Ibragimov

AdonisJS v7 Released: 'Batteries-Included' Node.js Framework - A popular framework that includes auth, ORM, queues, testing, etc. With v7 comes an all new web site, OpenTelemetry integration, new starter kits to rapidly build new apps, and more.

Harminder Virk

🎨 Color Thief 3.0: Grab Color Palettes from Images - Given an image, this uses canvas to return a list of the dominant colors. Works in browsers or Node. Now with OKLCH support, Web Worker offloading, 'live extraction' for video, canvas and image elements, and more. GitHub repo.

Lokesh Dhakar

📊 ng2-charts: Chart.js-Based Charting Library for Angular - Now with Angular 20 support.

Valor Labs

vue-superselect: A Headless Select/Combobox for Vue 3

Nemanja Malesija

• 📄 React PDF 10.4 - Display PDFs in React apps. v10.4 adds the ability to override colors used in rendering.

• 🕹️ JSNES 2.0 - JavaScript NES emulator for browsers and Node. (Demo.)

• Milkdown 7.19 - Plugin-driven WYSIWYG markdown editor framework.

• Peggy 5.1 - Simple parser generator.

📢 Elsewhere in the ecosystem

• 🎉 Three weeks ago we featured npmx.dev, a new, fast way to browse and search the official npm registry. Things have got more serious this week with a full announcement post about the site's alpha release, coupled with a flurry of enthusiastic blog posts from around the community celebrating the project. I can't remember the last time a JavaScript project attracted so many blog posts at the same time.

• Locutus is a curious project that offers TypeScript ports of standard libraries from fifteen other programming languages (e.g. PHP, Go, Python, Ruby).

• The results of the State of React Native 2025 survey have been released by Software Mansion and Devographics.

• Detailed notes for performing a TypeScript 5.x to 6.0 migration. The author suggests it might be handy to feed to an AI agent of your choice.

• An interactive version of the famous xkcd comic about single-person dependencies, courtesy of p5.js.

• The Drizzle ORM team has joined PlanetScale.

• A list of little, fun programming languages.

#​774 - February 24, 2026

Read on the Web

JavaScript Weekly

Oxfmt Beta: A Fast, Rust-Powered JavaScript Code Formatter - A 100% Prettier-compatible JavaScript code formatter (and sister project of Oxlint) that boasts being 30x faster than Prettier and 3x faster than Biome. Since the alpha, it now supports embedded language formatting (JSX, YAML, HTML, etc), Tailwind CSS class sorting, import sorting, and more.

Boshen, Dunqing, and Sugiura (VoidZero)

FlexGrid by Wijmo: The Industry-Leading JavaScript Datagrid - A fast and flexible DataGrid for building modern web apps. Key features and virtualized rendering are included in the core grid module. Pick & choose special features to keep your app small. Built for JavaScript, extended to Angular, React, and Vue.

Wijmo From MESCIUS sponsor

IN BRIEF:

• Martin Kleppe, known for his creative experiments like tixy.land, has created a scrolling bitmap quine in just 666 characters of HTML and JavaScript. Here's the annotated source so you can see how it works.

• In the Oracle vs Deno JavaScript trademark case, Oracle has asked for a two month extension to proceedings, which Deno has agreed to.

• Patrick Brosset notes that, as of last month's release of Firefox 147, you can now use JS modules in service workers on all major browsers.

• A cute technical trick for using the browser's canvas element to compress textual data from JavaScript.

RELEASES:

• Vuetify 4.0 - Vue framework for building responsive UIs. (Upgrade docs.)

• npm v11.10.0 - Maintainers can now add/update trusted publishing configs across multiple packages simultaneously. There's also a new --min-release-age option.

• Node.js v25.7.0 (Current) and v24.14.0 (LTS)

• ESLint 10.0.2, Hono 4.12, Deno 2.6.10, Electron 40.6, Three.js r183

📖 Articles and Videos

The Fastest Frontend Tooling for Humans and AI - Christoph (of Jest fame) covers his preferred tools for getting your JavaScript tool stack running as fast as possible. It's also intended for LLMs to process via this Markdown version.

Christoph Nakazawa

Goodbye innerHTML, Hello setHTML for Stronger XSS Protection - As of v148, Firefox supports the Sanitizer API. Rather than assigning HTML to DOM nodes with innerHTML, you can use setHTML for safety by default. It's a cutting-edge feature, with Chrome 146 (beta) also adding support, but nothing in Safari yet, so DOMPurify will remain useful for a while.

Mozilla Hacks

Clerk's Free Tier Now Covers 50,000 MRUs - Up from 10K. MFA included in Pro. Unlimited apps on all plans. No per-app upgrades anymore.

Clerk sponsor

Halving Node.js Memory Usage with Pointer Compression - Cloudflare, Igalia, and the Node project have collaborated on node-caged, a Node.js 25 Docker image with V8 pointer compression enabled, yielding up to 50% memory savings. Matteo digs into all the details.

Matteo Collina

📺 My Angular Stack in 2026 - An opinionated walk through tools the author would pick if starting a new Angular project now. Rainer Hahnekamp

📄 How to Publish to npm from GitHub Actions - Using the new npm OIDC trusted publishing workflow. Gleb Bahmutov

📄 Building an Endless Procedural Snake with Three.js and WebGL Sujen Phea

🛠 Code & Tools

OpenSeadragon 6.0: A Web Viewer for High Resolution Images - A big step forward for a project that's almost 15 years old, and one of few stable, trusty options for rendering ultra-high resolution images for users to zoom into and pan around. Version 6 introduces a new async and cache-managed pipeline, making it far more efficient at scale.

OpenSeadragon Contributors

💡 OpenSeadragon was recently used as the basis for the Isometric NYC (well worth reading about in its own right!) project.

SurveyJS: JavaScript Libraries for Dynamic Web Forms - Build JSON-driven forms in your app (React/Angular/Vue) without SaaS limitations. Keep full ownership of your data.

SurveyJS sponsor

bignumber.js 10.0: Library for Arbitrary-Precision Arithmetic - Works around limitations of JavaScript's Number and BigInt types, such as if you need to work with very large non-integers. Usefully, the library is included on the page so you can play with it in the JS console.

Michael Mclaughlin

⏳ Slowmo: Slow Down, Pause, or Speed Up Time - A tool you can use either as a library or browser extension that slows down time in the browser for debugging and testing purposes. It slows down numerous things including CSS animations, transitions, and requestAnimationFrame.

Francois Laberge

React Doctor: Give Your React Code a Quick Check-Up - Fresh from the creator of React Scan and React Grab, a new tool that scans your codebase and gives you a 0-100 score. (GitHub repo.)

Aiden Bai

💡 Angular Doctor is a similar project for Angular apps inspired by React Doctor.

Vue Scrollama 3.0: Vue Component for Scroll-Driven Interactions - Scrollama is a library for doing so called 'scrollytelling' where scroll position affects the presence of certain elements in the viewport. This project makes it easier to use with Vue.

Vignesh Shenoy

• Beautiful Mermaid 1.0 - Render Mermaid diagram markup to SVG or ASCII/Unicode outputs (above) from JavaScript.

• 📊 Plotly.js 3.4 - Standalone data visualization library covering charts, graphs, maps, and more. Examples.

• pnpm v10.30.0 - pnpm why now shows a reverse dependency tree.

• 📄 DOCX 9.6.0 - Generate/modify .docx files from JavaScript.

📢 Elsewhere in the ecosystem

• Play with a complete Windows 3.11 environment in your browser. A lot of fun! There's a recreation of 90s search engine Altavista (above), a version of mIRC that connects to an actual IRC server, and a variety of classic games.

• Andrew Nesbitt shares some useful pointers on Git's 'magic' files including .gitignore, .gitmessage, and other files that affect Git's behavior.

• It used to be cool to emulate CPUs and consoles in JavaScript. But now someone's made an x86 CPU emulator in CSS!

• Hologram is an interesting web framework for the Elixir language that compiles Elixir front-end code to JavaScript with a striking level of success.

• Tailwind CSS v4.2 introduces new mauve, olive, mist and taupe color palettes to the default theme.

• 🎉 Angular has just passed 100K GitHub stars!

#​773 - February 17, 2026

Read on the Web

JavaScript Weekly

TanStack Hotkeys: A Type-Safe, Cross-Platform Hotkey Library - The TanStack family gains a new member: Hotkeys, an alpha-stage universal keyboard interaction toolkit. It handles cross-environment quirks, supports multi-step sequences (like Vim commands or cheat codes), and can record user shortcuts. Here's the full pitch.

TanStack LLC

💡 Being in alpha, the focus in the docs is on React for now, but it's not React only, and they're looking for help with Solid, Angular, Svelte, and Vue adapters.

Still Writing Tests Manually? Meticulous AI Is Here - Notion, Dropbox, Wiz, and LaunchDarkly have found a new testing paradigm - and they can't imagine working without it. Built by ex-Palantir engineers, Meticulous autonomously creates a continuously evolving suite of E2E UI tests that delivers near-exhaustive coverage with zero developer effort.

Meticulous sponsor

Announcing TypeScript 6.0 Beta - v6.0 is largely a "time to clean up your tsconfig" release, designed to bridge the transition to the Go-powered native TypeScript 7 later this year. Be aware of some tweaks, like types defaulting to [] and --strict now being true by default, among many more breaking changes and deprecations.

Microsoft

IN BRIEF:

• 📊 Hot on the heels of the recent State of JS survey results come the State of React results.

• 🤖 Google shows off a preview of WebMCP, an attempt to create a standard way for web sites to offer up abilities for AI agents to use.

RELEASES:

• Biome 2.4 - The formatting/linting tool can now handle embedded CSS & GraphQL in JS files, improves Vue and Svelte support, and adds HTML accessibility linting rules.

• React Native 0.84 - Hermes V1 is now the default JS engine on iOS and Android, iOS ships with precompiled binaries, and React 19.2.3.

• Node.js 25.6.1 (Current) and Node.js 24.13.1 (LTS)

• sql.js v1.14.0 - SQLite compiled to JavaScript.

📖 Articles and Videos

Experiments with CodeMirror - CodeMirror is one of the most robust code editor components out there (we've just used it while rebuilding our newsletter editor!) and it's very extensible too, as seen in this walkthrough of building a VSCode-like 'change review' feature for it.

Antonio De Lucreziis

How to Make an HTTP Request in Node.js - A comprehensive guide to using fetch in production, tackling timeouts, streaming requests and responses, retries, concurrency, mocking, and more. Most of this is useful in the broader JavaScript context.

Luciano Mammino

One Database for Transactions and Analytics. No Pipelines - TimescaleDB extends Postgres so analytics runs on live data-no sync lag, no drift, no second system. Try free.

Tiger Data (creators of TimescaleDB) sponsor

Implementing Virtual Scrolling at Billion-Row Scale - A walkthrough of tackling the numerous challenges involved in building a table component (HighTable) that handles billions of rows.

Sylvain Lesage

JS-Heavy Approaches Aren't Compatible with Long-Term Performance Goals - A web performance engineer at Automattic makes the case against JS-heavy architectures and in support of a more server-centric approach.

Sérgio Gomes

📄 Fun with TypeScript Generics - Not your typical entry-level tutorial but a dive into a niche use case. Adam Rackis

📄 Building Bulletproof React Components - Elegant, no-nonsense tips from the co-creator of SWR. Shu Ding

📄 How Rolldown Works: High-Performance Code Splitting with Bitset Logic Atriiy

📄 Angular Bindings: What Are They and How Do I Use Them? Bo French

🛠 Code & Tools

Electrobun v1: A Bun-Based Desktop App Approach - An introduction to a cross-platform runtime for JS/TS desktop apps. It uses the OS's default web renderer (like Neutralinojs) with Bun as the engine and bundler behind the scenes. The resulting bundles are as small as 12MB. (Homepage and GitHub repo.)

Blackboard

💡 Electrobun's creator ▶️ shows it off in this 4 minute video.

Console Ninja: Inline Logs & Smarter Debugging - See console output, runtime data, and errors next to your code, shared with your AI. Rethought, redesigned, and rebuilt in v2 for faster JavaScript debugging workflows.

Wallaby Team sponsor

fetch-network-simulator: Intercept fetch to Simulate Poor Network Conditions - The heart of this is a library that intercepts fetch and applies rules to do things like drop random requests, delay them, or slow them down, so you can see how resilient your app is.

Karn Pratap Singh

Peek: A Lightweight Library for Smart Page Header Behavior - You can see it in action on the page. It's "smart" in that it will differentiate between small insignificant scrolls and intentional ones. You can customize the thresholds and delays and it works with any framework. Repo here.

Chad Pierce

🏎️ Rari: Runtime-Accelerated Rendering Infrastructure - A React Server Components framework but with a Rust-powered server runtime, aiming for higher throughput and lower latency. The getting started guide will help you get the idea.

Ryan Skinner

Broad Infinite List: A Bidirectional Infinite List for React and Vue - Smoothly stream logs, feed updates, or chat history in both directions without layout shifts.

suhaotian

• 📊 Perspective 4.2 - Interactive analytics and data viz component for large/streaming datasets.

• Dockview 5.0 - Zero dependency layout manager supporting tabs, groups, grids, and split views.

• ♟️ Stockfish.js 18 - A WASM port of the Stockfish chess engine you can use from JavaScript.

• Ohm 17.5 - Parsing toolkit for building parsers, interpreters, etc.

📢 Elsewhere in the ecosystem

• 🎨 Three years ago we linked to DPaint.JS, a web based image editor modeled after the legendary 1980s Amiga and PC graphics editor Deluxe Paint. Many side projects like this fizzle out, but not DPaint! v0.2.0 has been released after two years with support for animations, pen support, texture brushes, and more.

• almostnode is an experimental project that brings a Node.js runtime environment into the browser. The demo on the homepage is neat.

• 📊 Data from over 100,000 sites was boiled down into this useful report on modern CSS usage. The median number of CSS rules per site was 2,802, with one page somehow using 210,695 rules!

• 🕹️ Not content to just port Quake to run in the browser, the creator of Three.js has now attempted a Descent port too (source).

• 🤖 Can you recreate something like SQLite with a swarm of agents? Kian Kyars had a try, as part of an agent coordination experiment.

• Cloudflare is rolling out a feature to allow agents to fetch Markdown directly from Cloudflare-powered sites.