fidzu : java

#​768 - January 13, 2026

Read on the Web

JavaScript Weekly

Web Dependencies are Broken; Can We Fix Them? - Lea, who has worked at the heart of Web Standards for years, delivers a compelling (and educational) call to action about a problem every JavaScript developer has encountered: why is managing dependencies and introducing them into code so unnecessarily messy and what could we do about it?

Lea Verou

Build Marketing Sites Like Apple - Learn how modern, high-impact marketing sites are built from someone doing it at the highest level. Matias Gonzales, Design Engineer at Vercel, teaches GSAP animation, scroll-driven storytelling, 3D with Three.js, and performance-first techniques used on award-winning sites.

Frontend Masters sponsor

IN BRIEF:

• 📺 The full set of React Conf 2025 videos is now online, made up of 25 talks and 23 interviews, including one with four members of the core team.

• There's a tiny update in the Deno-vs-Oracle JavaScript trademark dispute with Oracle requesting, and Deno agreeing to, a 60-day extension. As it stands, the case is set to drag into 2027.

• 📘 The Concise TypeScript Book is a short, focused TypeScript guide that's open and free to read.

RELEASES:

• Node.js January 13 2026 Security Releases - Long-awaited security releases of Node.js v20.x, 22.x, 24.x, and 25.x to resolve five different vulnerabilities.

• Bun v1.3.6 - Bun.Archive can now work with tar archives, Bun.JSONC supports parsing commented JSON, plus there are many performance optimizations and tweaks.

• pnpm 10.28 - The efficient package manager adds a beforePacking hook to customize package.json's contents at publish time.

• Angular 21.1 is expected this week. v21.1 rc0 landed last week teasing some of the updates.

• Ember 6.9, ESLint v10.0.0 RC0, Rspack 1.7

📖 Articles and Videos

Date is Out, Temporal is In - The Temporal API has been promised as a future API tackling the weaknesses of JavaScript's Date for many years now, but finally that future is arriving. Mat leans on numerous examples to show off Date's weaknesses and push Temporal's strengths here.

Mat "Wilto" Marquis

💡 Temporal's browser support still looks weak, but Chrome 144 - rolling out generally this week - brings full support. Temporal Polyfill also offers a stop-gap while native support grows.

How Wrong Can a JavaScript Date Calculation Go? - "the story of an issue that I faced that will be much easier to handle once Temporal is more widespread."

Phil Nash

Add GitHub, Slack & Google Integrations Without Rebuilding OAuth - WorkOS Pipes handles OAuth flows, token refresh, and storage. Users connect via a widget, your app makes one API call.

WorkOS sponsor

Stop Turning Everything Into Arrays (and Do Less Work Instead) - A post showing off iterator helpers, a broadly supported set of methods for working with Iterator objects as a more efficient way of processing data lazily in an iterative (rather than randomly accessed) fashion.

Matt Smith

How to 'Steal' Any React Component - A look at how to reproduce a component from a production React app without the original source, using React's internal data structures (via Fiber) and LLMs to reconstruct things.

David Fant

📄 JavaScript's for-of Loops Are Actually Fast Suren Enfiajyan

📄 Why ARM Has a 'JavaScript Instruction' - FJCVTZS, specifically. NotNotP

📄 How I Write Custom Elements with lit-html Dave Samaniego

📄 document.currentScript is More Useful Than I Thought Chris Coyier

📄 What Happened (and What's Happening) to WebAssembly Emnudge

🛠 Code & Tools

memlab 2.0: A Framework for Finding JavaScript Memory Leaks - A testing and analysis framework for identifying memory leaks and optimization opportunities that spawned from Facebook's own approach to optimizing its main app. Write scenarios, and memlab compares heap snapshots, filters memory leaks, and aggregates the results.

Facebook Open Source

The Time-Series Database That Balances Simplicity and Performance - Stay Postgres-native with automatic partitioning, 95% compression, and continuous aggregates at production scale.

Tiger Data (creators of TimescaleDB) sponsor

Fabric.js 7.1: A Powerful SVG Abstraction Library - Provides an interactive object model on top of the HTML5 canvas to make it easier to work with multiple visual elements. Ideal for the browser but it works with Node too.

Fabric.js

Ohm: A Parsing Toolkit for JavaScript and TypeScript - It's been a few years since we covered this project and it's come along a lot since. It's a library for building PEG-based parsers you can use in interpreters, compilers, analysis tools, etc. and you can even play with its grammar online.

Warth, Dubroy, et al.

Superdiff 3.2: Compares Two Arrays or Objects and Return a Diff - Got two similar objects or arrays and want to see the underlying differences? Superdiff's recent updates boost performance, add support for streamed input and using a worker for more efficient diffing in a separate thread.

antoine

• JavaScriptKit 0.38 - Swift framework to interact with JavaScript via WebAssembly.

• 🎵 alphaTab 1.8 - Music notation and guitar tab rendering library.

• Neo.mjs v11.20 - Multi-threaded application engine for the Web.

• Monio 0.70.0 - Kyle Simpson's IO monad implementation.

• Ant Design 6.2 - UI design language and React UI library.

• xstyled 4.1 - Utility-first CSS-in-JS framework for React.

• Jint 4.5 - JavaScript interpreter for .NET.

📢 Elsewhere in the ecosystem

Some other interesting tidbits in the broader landscape:

• 🤖 Even Linus Torvalds is 'vibe coding' now. He's been using Google's Antigravity tool to create some digital sound effects.

• GitHub is planning to implement 'staged publishing' for npm packages in 2026 as a way to introduce a review step before releases go live.

• 🗓️ The Astro team shares a full 2025 year in review post. It's been a big year for the popular framework.

• Anil Dash shares the story of how Markdown took over the world.

• The results of the State of HTML 2025 survey are now available.

• TIL that Deno, the JavaScript runtime, is being distributed on Python's PyPI to make it easier for Python apps to call out to JavaScript as needed.

• In 2025, Bun was the third largest contributor to JavaScriptCore, the JavaScript engine powering both Safari and Bun.

#​767 - January 6, 2026

Read on the Web

🎉 Happy New Year. JavaScript Weekly is now landing in your inboxes on Tuesdays, so here we are! Let's see what 2026 brings.
__
Your editor, Peter Cooper

JavaScript Weekly

The 2025 JavaScript Rising Stars - At the start of each year, Michael rounds up the projects in the JavaScript ecosystem that gained the most popularity on GitHub in the prior year. After a two-year run of topping the chart, shadcn/ui has been pushed down to #3 by n8n and React Bits. This is a fantastic roundup, now in its tenth(!) year, and features commentary from a few industry experts too.

Michael Rambeau et al.

Make Flaky Tests a Last-Year Problem - Meticulous creates and maintains a continuously evolving E2E UI test suite with zero developer effort. Built on Chromium with a deterministic engine, it's the only testing tool that eliminates flakes. Relied on by Dropbox, Notion, and Lattice.

Meticulous Ai sponsor

MicroQuickJS: A New JavaScript Engine from Fabrice Bellard - Fabrice, one of the world's most prolific developers well-known for creating FFmpeg, QEMU and QuickJS, is back with a new JavaScript engine targeting embedded systems, and that can run with as little as 10KB of RAM.

Fabrice Bellard

💡 The discussion about MicroQuickJS on Hacker News was particularly rich. Redis's creator, Salvatore Sanfilippo, even noted that Redis would have used JavaScript as its scripting language instead of Lua if this had existed in 2010.

IN BRIEF:

• pnpm's lead maintainer, Zoltan Kochan, presents a look back at how 2025 was a transformative year for the project.

• If you missed our final issue of 2025, be sure to check it out. We did a month-by-month rundown of what happened in the JavaScript world and shared the top ten links of the year.

• WebF is a new WHATWG-compliant web runtime for Flutter so you can build parts of Flutter apps using a more typical JS stack (React, Vue, etc.)

RELEASES:

• pnpm 10.27 - The alternative, efficient (and increasingly security-focused) package manager gets some tweaks, including a setting to ignore trust policy checks for packages published more than a specified time ago.

• Ink 6.6 - Use React to build CLI apps, as used by Claude Code, Gemini CLI, and many others.

• 🎨 Color.js v0.6 - The popular standards-compliant color conversion and manipulation library approaches its eventual 1.0 release.

• Prisma 7.2, Deno 2.6.4

📖 Articles and Videos

How to Compile JavaScript to C with Static Hermes - The creator of Parcel is porting parts of the project to Rust, but this raises some challenges on interoperating with existing JavaScript plugins, especially without a runtime JS interpreter. What about compiling JavaScript to C libraries that can be called directly? It's possible!

Devon Govett

🦖 Build a Dinosaur Runner Game with Deno - An ongoing series of posts (part two and three are also available) on the official Deno blog where you get to recreate something akin to Chrome's Dinosaur Game for yourself.

Jo Franchetti

How CERN Cut Storage by 95% and 40x'd Query Speed with TimescaleDB - Learn how CERN engineers modernized Large Hadron Collider time-series data for performance, scale, and cost efficiency.

Tiger Data (creators of TimescaleDB) sponsor

Fixing TypeScript Performance Problems: A Case Study - A big monorepo-based TypeScript project was suffering sluggish IntelliSense, long type-checking times, and slow builds, but Solomon's team found some ways to significantly improve things.

Solomon Hawk

Why Object of Arrays (SoA Pattern) Beat Interleaved Arrays - A dive down a JavaScript performance rabbit hole.

Royal Bhati

📄 Brendan Eich Warns Against "Rushed Web UX Over Native" as Windows 11 Leans Harder on WebView2 and Electron Windows Latest

📄 Implementing Streaming JSON in Just 200 Lines of JavaScript Krasimir Tsonev

📄 Signals vs Query-Based Compilers Marvin Hagemeister

📄 The Nine Levels of JavaScript Dependency Hell Andrew Nesbitt

📄 How to Create a Pixel-to-Voxel Video Drop Effect with Three.js and Rapier Junichi Kasahara

🛠 Code & Tools

Schedule-X 3.6: A Material Design Calendar and Date Picker - Available in the form of React/Preact, Vue, Svelte, Angular, or plain JS components. Open source but with a premium version with extra features. GitHub repo.

Tom Österlund

📄 jsPDF 4.0: Client-Side JavaScript PDF Generation - Create tickets, documents, certificates, etc. all on the fly. There's a live demo, as well as thorough documentation.

Parallax

SurveyJS: JavaScript Libraries for Custom Web Forms - Keep full ownership of your data. Build JSON-driven forms in your app without SaaS limitations.

SurveyJS sponsor

Bruno 3.0: An Open-Source HTTP API Client App - There are a lot of 'API client' tools with varying levels of features, but this is open source and entirely built in JavaScript. v3.0 features a complete overhaul of the UI, adds workspaces for grouping things together, and more. GitHub repo.

Bruno Software Inc.

• JoltPhysics.js 1.0 - A popular C++ physics library can now be used from JavaScript thanks to Emscripten. Check out numerous demos here.

• 🎶 ChordSheetJS 13.0 - Library for parsing and formatting chords and chord sheets. (Demo.)

• Middy 7.0 - Node.js middleware engine for AWS Lambda. Now supports Durable Functions.

• PlayCanvas glTF Viewer 5.8 - 3D model viewer supporting glTF 2.0 and PLY.

• k6 1.5 - Modern Go + JavaScript-powered load testing tool. (Homepage.)

• 📊 Recharts 3.6 - Popular D3-powered React charting library.

• NATS.js 3.3 - JavaScript client for the NATS messaging system.

📢 Elsewhere in the ecosystem

Some other interesting tidbits in the broader landscape:

• For years, Mozilla, Apple, and the CSS Working Group have been working to bring "masonry" layouts (as above) natively to CSS. The concept is now called CSS Grid Lanes and here's how it works. You can already try it out in Safari Technology Preview 234.

• Addy Osmani shares 21 valuable lessons from spending 14 years at Google. Good general advice for remaining a competent and engaged engineer over time.

• Andy Pavlo has put together a neat review of what happened in the world of databases in 2025. Simon Willison has a similar review of LLMs in 2025.

• 🤖 Mattias Geniar explains how AI has made web development fun again (for him, at least).

• Ultimate Linux is a curious experiment to build a minimal userspace for Linux entirely in JavaScript.

#​766 - December 19, 2025

Read on the Web

🗓️ As it's the last issue of 2025, a reminder that JavaScript Weekly moves to Tuesdays in January. See you again on January 6, 2026!
__
Your editor, Peter Cooper

JavaScript Weekly

It's the final issue of the year, so we're going to cover a few new items, then look back at the top links of 2025 (based on reader engagement) and recap what happened in the ecosystem month-by-month this year.

The JavaScript Bundler Grand Prix - Bundlers now sit at the heart of many JavaScript workflows and are sometimes even integrated into runtimes (e.g. Bun's). This piece surveys the landscape and argues the speed wars are mostly over, with the real battle shifting to artifact size and the code that actually ships to users.

Kate Holterhoff

Coding with AI: The Practical Path for JavaScript Devs - Go beyond demos and hype. Learn real AI-powered workflows with JavaScript, from prompt engineering and coding agents to MCP, ML, and production-ready apps.

Frontend Masters sponsor

'I Ported JustHTML from Python to JavaScript with LLMs in 4.5 Hours' - Prolific AI blogger Simon Willison shares the tale of porting a standards-compliant HTML5 parser (which passes all 9200+ html5lib-tests) from Python to JavaScript using OpenAI's Codex CLI and GPT 5.2. You can play with the end result or check out the code.

Simon Willison

IN BRIEF:

• 🛠️ Dan Abramov shows off his new 'RSC Explorer', a tool for exploring how React Server Components work behind the scenes.

• Cloudflare Workers' Wrangler tool now supports automatic configuration for deploying apps using numerous web frameworks to Workers, including Next.js, Astro, TanStack Start, SvelteKit, and Nuxt.

• picknplace.js offers a fresh take on the idea of drag-and-drop.

• 🤖 OpenAI has revealed its GPT 5.2 Codex model and we learn how two recent React vulnerabilities were discovered with its help.

RELEASES:

• Tesseract.js 7.0 - OCR library to extract text from images; now faster.

• Base UI 1.0 - Elegant React component suite from a strong team.

• Wasp 0.20 - Rails-like framework for React 19, Node & Prisma.

• Graffle 7.4 - JavaScript GraphQL client that runs anywhere.

• Next.js 16.1, Bun 1.3.5, MathJax 4.1, Prisma 7.2

🏆 The Top 10 Links of 2025

1. A Perplexing JavaScript Parsing Puzzle - Hillel's deceptively simple puzzle - just 14 bytes of code - attracted by far the most attention this year. Despite working with JavaScript for most of its lifespan, I got it wrong!

Hillel Wayne

2. Ecma International Approved ECMAScript 2025: What's New? - Each year, the Ecma General Assembly approves the latest ECMAScript language specification, and you can read the ES2025 spec in full. Better, though, is to enjoy Dr. Axel's succinct explainer.

Dr. Axel Rauschmayer

MACROSCOPE - Free AI Code Review for Open Source - Free for non-commercial projects. Everyone else: use OSSAI for 50% off your first 2 months.

Macroscope sponsor

3. 'I Think the Ergonomics of Generators is Growing on Me' - If you've never worked with generator functions, this remains a great look at what they are and where they can be useful. Alex notes that "their practicality hasn't exactly caught on" (yet..)

Alex MacArthur

4. How the Web is Using JavaScript - The JavaScript section of this year's HTTP Archive Web Almanac report went into depth on how much JS we're using (and failing to use), the popularity of TypeScript, Web Worker usage, and.. yes, jQuery still dominates!

HTTP Archive

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

Suren Enfiajyan

6. How to Keep package.json Under Control - Covers 'dependency hygiene' and ways to keep things under control. Great tips and tool recommendations.

7. A Brief History of JavaScript - This epic timeline of JavaScript's history will remain a go-to resource for years.

8. War Story: The Hardest Bug I Ever Debugged - A former engineer on the Google Docs team told the tale of a bizarre error that afflicted Google Docs ten years ago.

9. Things People Get Wrong About Electron - One of Electron's maintainers defended the technical choices made by the project over the years.

10. Move On to ESM-Only - While you can maintain packages supporting both ESM and CommonJS, Anthony explained why it's finally time to go 'ESM only'.

🗓️ JavaScript in 2025: Month by Month

Let's step through the year and remember the biggest things that happened in JavaScript each month:

JANUARY - At the start of a very productive year for the alternative JS runtime, Bun took a big step forward with Bun 1.2. We also got a big update on progress with Express.js.

FEBRUARY - An epic documentary about Angular was released. The Deno vs Oracle battle over the JavaScript trademark rumbled on. TypeScript 5.8 was a big release for Node developers in particular. Meanwhile, a developer implemented Doom entirely in TypeScript's type system.

MARCH - Babylon.js 8.0, the latest version of Microsoft's epic JavaScript 3D engine, was released, as was Express 5.1.

APRIL - Koa 3.0 was released, a major Node.js collaboration summit took place in Paris, and p5.js 2.0 was released.

MAY - The Remix project had a huge shakeup. The GSAP animation toolkit was made freely available. The Glitch platform announced it was shutting down. The Deno team put together an epic timeline of JavaScript's history and Microsoft released its first preview of its new natively-compiled Go port of TypeScript.

JUNE - Oxlint 1.0 and Vite 7.0 were released. Dr. Axel unveiled the ES2025 edition of his Exploring JavaScript book. Biome v2 became the first type-aware linter that didn't require tsc, and Ecma International approved the ECMAScript 2025 spec.

When LLMs Hit Your Database, Schema Names Aren't Enough - See how adding semantic context to Postgres helps LLMs query data correctly, and boosts SQL accuracy by 27%.

Tiger Data sponsor

JULY - The JS1024 code golfing contest took place, Deno 2.4 was released, and Vercel acquired NuxtLabs.

AUGUST - TypeScript 5.9 and Apache Echarts 6 were released. The jQuery team dropped a release candidate of jQuery 4.0 (we're still waiting for the final release, though).

SEPTEMBER - Mediabunny shook up the media processing scene. Chrome turned 17, and a messy few months for npm package security began with a variety of packages being compromised in a phishing attack. In response, pnpm added support for delayed dependency updates. macOS Tahoe users found Electron apps were laggy due to a change in a private API. The Deno project asked the community for $200k to help with its JavaScript trademark case.

OCTOBER - React Compiler v1.0 was released, as well as Node.js v25.0, and Node.js 24 became the active LTS release. The React team announced the React Foundation and moves to make React's ownership less attached to Meta. Bun 1.3 was released to much fanfare and Evan You announced Vite+. GitHub announced TypeScript had become the platform's #1 language.

NOVEMBER - The now-named Shai Hulud supply chain attack reared its ugly head in a 'version 2' form. The JavaScript Engines Zoo launched to show us just how rich the JS runtime and engine ecosystem is. Google unveiled Angular v21.

DECEMBER - JavaScript turned 30 years old. Microsoft shared an update on TypeScript 7.0 and Deno 2.6 was released. Node.js v24.12.0 (LTS) was also released, finally making type stripping stable in an LTS release.

🎄 This is the final issue of JavaScript Weekly for 2025 - thanks for reading, submitting links, and supporting us! We're going to return on Tuesday, January 6, 2026. See you then! And, if we're really lucky, we might catch up on our inbox packed with submissions by then too... ;-)