fidzu : javascript

#​778 - March 24, 2026

Read on the Web

JavaScript Weekly

Announcing TypeScript 6.0 - Over six months in the making, TypeScript 6.0 is designed to bridge the gap between its self-hosted compiler and the (almost ready) Go-powered native compiler of TypeScript 7.0 . There are new features (Temporal improvements, RegExp.escape, and more), but most important are the changes to help you prepare for 7.0:

• Numerous default changes: strict is now true, module is esnext, rootDir defaults to ., and more.
• A change that will affect many apps is types defaulting to [] rather than pulling in everything from node_modules/@types.
• Numerous deprecations: the es5 target, emitting AMD, UMD, and SystemJS modules, --baseUrl, and others.
• --stableTypeOrdering makes 6.0's type ordering behavior match 7.0's to help diagnose inference differences as you update.

Daniel Rosenwasser (Microsoft)

Add Excel-like Spreadsheet Functionality to Your JavaScript Apps - SpreadJS is the industry-leading JavaScript spreadsheet for adding advanced spreadsheet features to your enterprise apps. Build finance, analysis, budget, and other apps. Excel I/O, 500+ calc functions, tables, charts, and more. View demos now.

SpreadJS from MESCIUS inc sponsor

IN BRIEF:

• 🤖 The Node.js community is wrestling with the role that LLM-produced code should play in its implementation, with the once creator of the io.js fork starting a petition to say 'no' to contributions built with AI assistance.

• A large number of Deno employees announced (e.g.) they were departing the company last week. Deno employee Josh Collinsworth, not speaking for the company, noted "Deno is not going away. These are just hard times."

• 📗 Chibivue is a code project and associated online book that provides, and explains how to build for yourself, a minimal Vue.js implementation.

RELEASES:

• Next.js 16.2 - The React framework gets much faster next dev startup and ~50% faster rendering.

• Storybook 10.3.0 - The component workshop adds Vite 8, Next.js 16.2, and ESLint 10 support, plus a preview of an MCP server for React dev.

• ⚠️ All maintained Node.js versions are due security releases later today to address nine vulnerabilities.

• Deno 2.7.6 - deno eval auto-detects CJS vs ESM, and --cpu-prof-flamegraph generates interactive SVG flamegraphs.

• Bun 1.3.11, Valibot 1.3, ESLint 10.1

📖 Articles and Videos

The Three Pillars of JavaScript Bloat - Three reasons your node_modules is huge: needless ES3-era compat packages, micro-libraries with a single consumer, and ponyfills for APIs that shipped years ago! James, known for the e18e ecosystem performance project, offers some ways to calm the chaos.

James Garbutt

How Rewriting a Rust and WASM-Powered Parser in TypeScript Made it Faster - A counterintuitive result on the surface, but the WASM-JS boundary can introduce a serious performance penalty for many use cases, such that it can be 2-4x quicker to stay in the JS world.

Thesys Engineering Team

Clerk Auth for Chrome Extensions - Now in Vanilla JS - The Chrome Extension SDK now supports vanilla JS via createClerkClient(). Build popups and side panels without React. New quickstart included.

Clerk sponsor

📊 A React SSR Framework Performance Showdown - A large benchmark of TanStack Start, React Router, and Next.js under heavy load. The results led to patches benefitting both TanStack and React generally.

Matteo Collina (Platformatic)

Two React Design Choices Developers Don't Like, But Can't Avoid - Deferred state commits and dependency arrays on effects cause a lot of issues, but Ryan points out that signal-based alternatives (like Solid) only avoid them by staying synchronous.

Ryan Carniato

📄 JavaScript Thinks Everything's a Date - This is why we celebrate the progress of the Temporal API! Robert Gambee

📄 An Introductory Guide to Bookmarklets - Tiny bits of JavaScript saved in, and triggered by, bookmarks. Declan Chidlow

📺 How to Burn $30M on a JavaScript Framework - A five-minute retrospective of 2012's famo.us project. Fireship

📄 Node.js Worker Threads are Problematic, But They Work Great for Us Aaron Harper (Inngest)

🛠 Code & Tools

pnpm 11 Beta 0: A Sneak Peek - The efficiency-focused npm alternative continues its outsized impact on JS package management. It's moving to a SQLite-powered store, gets a configuration overhaul, and has stricter build security by default. Four new commands, too, including pnpm sbom for generating Software Bill of Materials JSON documents.

pnpm contributors

Edge.js: Running Node Apps Inside a WebAssembly Sandbox - A new, in-alpha runtime that maintains full Node compatibility while offering isolation via WebAssembly. Existing apps/modules run unmodified with system calls sandboxed, and the JS engine used is pluggable (between V8, JavaScriptCore and QuickJS). More info on the homepage.

Syrus Akbary (Wasmer)

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.

Wallaby Team sponsor

ArrowJS 1.0: Fast, Reactive UI Runtime Built on Platform Primitives - Built around ES modules, template literals and the DOM, it can also isolate component logic inside WASM sandboxes while rendering full inline DOM directly. First unveiled in 2022 by the creator of FormKit, it's now clearly finding its feet.

Justin Schroeder

Sugar High 1.0: A Lightweight JSX Syntax Highlighter - Doesn't need React present, so you can use it for syntax highlighting JSX snippets anywhere. You can also theme it with CSS. GitHub repo.

Jiachi Liu

• htmlparser2 12.0 - Fast, forgiving HTML and XML parser focused on performance. Works both server-side and in the browser.

• 🔊 vue-audio-visual 3.1 - Vue 3 HTML5 audio visualization components using the Web Audio API. Check out the demos.

• Svelte SEO 2.1 - Optimize Svelte apps for search engines/social media with meta tags, Open Graph, and JSON-LD.

• pnpm/action-setup 5.0 - GitHub Action to install and configure pnpm. Now uses Node.js v24.

• ☎︎ vue-tel-input v9.8.0 - Vue component for global phone number input. (Demo.)

• Mediabunny 1.40.0 - Powerful toolkit for reading/writing/converting media files.

• 🗓️ EventCalendar 5.5 - Full-sized drag and drop event calendar.

• Maz UI 4.9 - Lightweight UI components for Vue 3 and Nuxt 3.

• React Joyride 3.0 - Create guided tours in React apps.

📢 Elsewhere in the ecosystem

• The Microsoft Visual Studio Code team shares how they use AI to work on VS Code, from organizing their work and handling issues, to pushing out new releases. If you've noticed VS Code is getting a release every week now, this is why!

• 🔒 Perhaps more than ever, it's essential to ensure no secrets have sneaked into your repos. Secretlint is a linter dedicated to that task.

• Back in 1989, Rob Pike, famous for his work on both the Go programming language and co-creating UTF-8, wrote Rob Pike's 5 Rules of Programming which has gone viral this week and still apply in 2026!

• 🤖 Addy Osmani introduces us to comprehension debt. In a world of agent-produced code, the question is now not "how do we generate more code?" but "how do we actually understand more of what we're shipping?"

•  Dislike all the menu icons that macOS 26 (Tahoe) has introduced? There's a solution: defaults write -g NSMenuEnableActionImages -bool NO

#​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.