fidzu : javascript

#​777 - March 17, 2026

Read on the Web

JavaScript Weekly

Temporal: The 9-Year Journey to Fix Time in JavaScript - JavaScript's date/time handling is notoriously messy and libraries like Moment.js became popular as a way to work around it. In 2017, Maggie Johnson-Pint, a maintainer of Moment.js, proposed the Temporal API to fix date/time handling for good, and we're mostly there (support is growing, with Safari and Node to catch up).

Jason Williams (Bloomberg)

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

Vite 8.0 Released - A mega release for the popular build tool. Designed to be a smooth upgrade, there's a lot behind the scenes: @vitejs/plugin-react v6 no longer needs Babel, Rolldown replaces Rollup and esbuild, Wasm SSR support, browser console forwarding to the terminal, and big performance gains.

Vite

💡 VoidZero has also open sourced its Vite+ toolkit. Originally intended to be a commercial project, Vite+ combines Vite, Vitest, Oxlint, Oxfmt, Rolldown, and tsdown into a single, unified toolchain, and it's now in alpha.

IN BRIEF:

• Sarah Gooding rounds up last week's TC39 meeting and the proposals that advanced there, including Temporal, Import Text, Error Stack Accessor, and Iterator Includes.

• 😆 BigInt.PI = 3? Enjoy qntm's tongue-in-cheek proposal to add mathematical constants to BigInt.

• Laurent Cazanove rounds up what was announced at last week's Vue.js Amsterdam conference, including Vue Router 5, Vite 8, and Void Cloud.

RELEASES:

• Electron 41.0 - The cross-platform desktop app framework adds ASAR Integrity digest and MSIX auto-updating support, improves Wayland support, and updates to Chromium 146, Node v24.14.0, and V8 14.6.

• Nitro v3 Beta - Extend your Vite app with a production-ready server, compatible with any runtime. Handy if you want to try building your own framework!

• Vitest 4.1 - Next-gen testing framework, now supporting Vite 8.

• Preact 10.29.0, Prisma 7.5.0, Babel 8.0 RC3, Vue 3.6.0 Beta 8

📖 Articles and Videos

Source Maps: Shipping Features Through Standards - Source maps are JSON files that provide debuggers and similar tools with a mapping between minified/transformed code and the original codebase. Jon gives us a tour and takes us behind the scenes of how the feature has progressed towards becoming a standard (ECMA-426).

Jon Kuperman (Bloomberg)

How we Rewrote 130K Lines from React to Svelte in Two Weeks - A common adage in recent months has been that the use of LLMs and coding agents could lock us into using only the most popular frameworks, but in reality they also make switching between frameworks easier than ever before.

Strawberry

Your Slowest Endpoint Is Probably an Analytics Query - TimescaleDB extends Postgres so analytics queries stay fast at scale. Hypertables, 95% compression, live data. Start for free.

Tiger Data (creators of TimescaleDB) sponsor

Best Practices for Svelte Developers - A brand new page in the Svelte docs that outlines some best practices for writing more robust Svelte apps.

Svelte Docs

An Empirical Study of Frontend Memory Leaks - Analysis of five hundred React, Vue and Angular apps for patterns that lead to memory leaks. Missing timer cleanups and event listener removals cause the majority of problems.

Ko-Hsin Liang

Rewriting a 12-Year-Old JavaScript Library in TypeScript - Specifically, the Machina finite state machine library.

Jim Cowart

📄 Lies I Was Told About Collaborative Editing: Why We Don't Use Yjs Alex Clemmer

▶️ Breaking and Securing OAuth 2.0 in Frontends Philippe De Ryck

📄 How I Added Bluesky Likes to My Astro Blog Luciano Mammino

📄 Why Node.js Needs a Virtual File System Matteo Collina

📄 Native JSON Modules Are Finally Real Matt Smith

🛠 Code & Tools

Nuxt 4.4: The Full-Stack Vue Framework - The full-stack Vue framework that includes routing (now powered by Vue Router v5), server-side rendering, and data fetching out of the box now adds custom useFetch/useAsyncData factories, typed layout props, build profiling, and more.

Daniel Roe and the Nuxt Team

Reveal.js 6.0: The HTML Presentation Framework - A long-standing way to bring elegant presentations to anyone with a browser. v6.0 has some breaking changes, switches to Vite, and introduces an official React wrapper.

Hakim El Hattab

40-60% of Your Mobile Builds Don't Need to Happen - Expo Workflows is mobile CICD that detects whether your changes touch native code and skips the builds you don't need.

Expo Workflows sponsor

RedwoodSDK 1.0 Released: The Cloudflare-Native React Framework - A server-first React framework, built as a Vite plugin, that integrates deeply with the Cloudflare platform (why?) and its provision of workers, databases (D1), durable objects, storage (R2), AI APIs, etc.

Peter Pistorius

• Defuddle 0.14.0 - Get the main content of a page as Markdown. A modern implementation of the ideas behind Mozilla's Readability.

• Extension.js 3.9 - Framework for developing fast, unified cross-browser extensions with zero configuration.

• React Native Sandbox 0.5 - Run multiple, isolated RN instances within an app.

• XO 2.0 - Opinionated, configurable ESLint 10 wrapper with 'lots of goodies'.

• Poku 4.1 - Cross-platform test runner that supports Node, Bun, and Deno.

• sax js 1.6 - SAX-style streaming XML parser for Node and browsers.

• 📺 YouTube.js 17.0 - JavaScript client for YouTube's private API.

• Svelte SPA Router 5.0 - A router for Svelte 5 single-page apps.

• 📃 PDFKit 0.18 - PDF generation library for Node and browsers.

• Cypress ESLint Plugin v6.2.0 - ESLint plugin for Cypress tests.

📢 Elsewhere in the ecosystem

• 📈 In The 49MB Web Page, Shubham Bose expresses surprise at finding that loading a single NY Times page results in 422 network requests and 49 megabytes of data transferred. He reflects on the problems that have led to this being a common experience on news sites.

• Difftastic is a handy tool to diff code files based on syntax. It supports most popular languages including JavaScript and TypeScript.

• VS Code 1.111 has been released. It's notable as being the first release in VS Code's new weekly stable release cadence.

• Amazon S3 has introduced account regional namespaces for S3 buckets, a feature that will help prevent so-called 'bucketsquatting'.

• 🎂 Feeling old yet? Sticking with S3, Amazon's Sébastien Stormacq reflects on the ubiquitous AWS S3 cloud storage system turning 20 years old.

#​776 - March 10, 2026

Read on the Web

JavaScript Weekly

Solid v2.0.0 Beta: The <Suspense> is Over - After a long experimental phase, Solid 2.0's first beta lands with first-class async support where computations can return Promises or async iterables, and the reactive graph suspends and resumes around them natively. <Suspense> is retired in favor of <Loading> for initial renders, and mutations get a first-class action() primitive with optimistic support. For existing users the breaking changes are substantial, but there's a migration guide.

Ryan Carniato

💡 Ryan also had an AI write up the architectural case for Solid 2.0, framing fine-grained reactivity as the only sustainable model for an AI-agent world. He also did ▶️ a livestream where he tried to break Solid 2.0 by pushing against its limits.

The Most Loved JavaScript Course Year After Year - JavaScript: The Hard Parts is rated 4.92 on average by thousands of developers. Build real mental models for how JavaScript works, from execution context and closures to async behavior and modern language features.

Frontend Masters sponsor

TypeScript 6.0 Release Candidate - v6.0 is primarily a stepping stone to the eventual Go-powered native TypeScript 7.0 due later this year and all the necessary tsconfig.json changes will put you in a good position for the future. There are only a few small changes in the RC vs the recent beta.

Daniel Rosenwasser (Microsoft)

IN BRIEF:

• TC39's 113th meeting has just started with the topic of taking the Temporal API to stage 4 high on the agenda.

• 📊 Minification Benchmarks is a frequently updated comparison of different JavaScript minifiers. SWC is in the lead overall, but Minify and Oxc's minifier aren't far behind and are much faster.

• 11ty (Eleventy) started life as a Node.js-powered static site generator, but now it's becoming Build Awesome, a project under the Font Awesome umbrella.

• 🇫🇷 The dotJS conference is back in Paris this September 1. Its CFP is open until April 28.

RELEASES:

• Node.js 25.8.0 (Current) - Adds a --permission-audit option to run Node's permission model in a warning-only mode.

• Astro 6.0 - astro dev is now using Vite's new Environment API so you can now run your exact prod runtime during dev. Also, a new Fonts API takes care of custom fonts.

• Knockout 3.5.2 - The classic MVVM library gets its first update in six years!

• ESLint v10.0.3 and ESLint v9.39.4

• Ember 6.11, Ionic Framework 8.8, React Native 0.85 RC.0, pnpm v10.32.0, Recharts 3.8, Jest 30.3

📖 Articles and Videos

Seven Years to TypeScript: Migrating 11,000 Files at Patreon - The popular creator platform had a million lines of JavaScript on its hands, and while adopting TypeScript on new code was going well, converting all their code was a daunting task. This retrospective covers the tools and techniques involved.

Gavy Aggarwal (Patreon)

Building a Real-Time Todo App with Jazz and Vue 3 - Jazz is a distributed database with real-time syncing and local reactive JSON state.

Alexander Opalic

Next.js Source Maps: From Minified Chunks to Readable Stack Traces - Your stack traces shouldn't point to random chunk files. Learn how to wire up source maps so Sentry shows the code you actually wrote.

Sentry sponsor

A Tale of Stealing npm Publish Tokens by Opening a GitHub Issue - A repo had an AI-powered issue triage system that ran when any issue was opened, and the issue's title was fed directly into the prompt… and that was just step one of the three-stage attack explained here.

Neciu Dan

Wikipedia Hit by Self-Propagating JavaScript Worm - A writeup of how a dormant script, accidentally triggered by a Wikimedia employee, exploited a shared global script and vandalized nearly 4,000 pages on Wikipedia's Meta-Wiki.

Lawrence Abrams (Bleeping Computer)

📄 How to Decode a VIN in JavaScript - VINs (Vehicle Identification Numbers) are standardized codes assigned to various types of motor vehicle. Cardog

📄 Building Async Page Transitions in Vanilla JavaScript Valentin Mor

🛠 Code & Tools

RevoGrid: High-Performance Data Grid Component - A high-performance data grid control built for massive datasets. Integrates with Vue, Angular, React, Svelte, or can be used from vanilla JS. Live demo and GitHub repo.

Revolist OU

Clerk Core 3: Redesigned Hooks, Smaller Bundles, Agent-Ready APIs - Redesigned useSignIn, useSignUp, and useCheckout hooks, ~50KB bundle savings, and keyless mode extended to TanStack Start, Astro, and React Router.

Clerk sponsor

ArkType 2.2: Use Your TypeScript Types as Runtime Validators - A TypeScript-first validation library where types and validators are the same thing. Write a type once and it becomes both the static type and the runtime validator. In v2.2, type.fn brings runtime-validated functions, checking inputs and return values automatically.

ArkType

TinyBase 8.0: A Reactive Data Store for Local-First Apps - A reactive data store and sync engine that can be used as the entire backend for many types of app. It can stand alone or integrate with all sorts of things like cloud storage, client-side stores, SQL databases, etc. v8.0 adds a middleware feature and the ability to store objects and arrays in its 'cells'.

James Pearce

📄 VMPrint: Pure JS Typesetting Engine for Perfect PDF Output - It's common to defer to headless Chrome instances for print-to-PDF type work, but VMPrint "guarantees identical layout given identical input, down to the sub-point position of every glyph." Here's a sample PDF.

Cosmic Iron

• SQLite JS 1.3 - Write custom SQLite functions in JavaScript.

• Heapify 1.0 - Fast JavaScript priority queue, implemented using a binary heap.

• 📺 OpenPlayer.js 3.0 - Modular, tree-shakeable HTML5 media player.

• Emittery 2.0 - Sindre Sorhus's simple, modern async event emitter.

• Svelte Sonner 1.1 - Toast notification component for Svelte apps.

• 📄 EmbedPDF 2.8 - Framework-agnostic JavaScript PDF viewer.

• Tabulator 6.4 - Interactive data tables for JavaScript apps.

• 🕹️ melonJS 18.0 - Lightweight HTML5 2D game engine.

• flatted 3.4 - Fast, minimal circular JSON parser.

• Poku 4.0 - Cross-platform test runner.

📢 Elsewhere in the ecosystem

• It's been eight years since we last mentioned JSLinux, Fabrice Bellard's JavaScript-powered Linux VM that runs in the browser. He's still working on it, and as of this week it supports x86_64, AVX-512 and APX.

  Head into a full x86_64 Alpine Linux environment, and start using Git, Node, Ruby, Perl, Python, and more, right away. Hacker News users discussed some use cases for it.

  The tech behind JSLinux is explained here with the biggest limitation being how its Internet connection works, going through a 40KB/s capped proxy.

• Did you know you can use newline and tab characters in URLs in HTML and they'll be ignored?

• How long does it take to compile Node.js on NVIDIA's tiny Jetson Nano device? About 27 hours.

• How to recreate the Flappy Bird game with CSS and no JavaScript at all.

#​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.