9 Times the Web Platform Was Influenced by Libraries | Jad Joubran
The web platform didn't invent most of its best APIs. It caught up to them. Libraries did the R&D work in production. They got tested by thousands of developers across thousands of codebases, which is the kind of feedback you can't simulate. They got bug reports. They iterated. And, the patterns that survived eventually became part of the platform itself. If you've been writing JavaScript for a wh
Cleaning up import paths in JS/TS packages - Socket
Cleaning up import paths in JS/TS packagespackage.json contains a local aliasing mechanism for import paths called "imports" it satisfies many use cases without tooling specific solutions like tsconfig.json Applications and libraries grow over time. In JavaScript and TypeScript these lead to large amounts of files over time due to various conventions and linting rules that may be held in a code ba
Signals, the push-pull based algorithm — Willy Brauner
We have been using Signals in production for years via several modern front-end frameworks like Solid, Vue, and others, but few of us are able to explain how they work internally. I wanted to dig into it, especially diving deep into the push-pull based algorithm, the core mechanism behind their reactivity. The subject is fascinating. The state of the world Imagine an application as a world where w
Scroll Restoration | TanStack Router Docs
Hash/Top-of-Page Scrolling# Out of the box, TanStack Router supports both hash scrolling and top-of-page scrolling without any additional configuration. Scroll-to-top & Nested Scrollable Areas# By default, scroll-to-top mimics the behavior of the browser, which means only the window itself is scrolled to the top after successful navigation. For many apps however, it's common for the main scrollabl
External import maps, today! • Lea Verou
A few weeks ago, I posted Web dependencies are broken. Can we fix them?. Today’s post is a little less gloomy: Turns out that the major limitation that would allow centralized set-it-and-forget-it import map management can be lifted today, with excellent browser support! The core idea is that you can use DOM methods to inject an import map dynamically, by literally creating an <script type="import
Temporal: The 9-Year Journey to Fix Time in JavaScript
Welcome to our blog! I'm Jason Williams, a senior software engineer on Bloomberg's JavaScript Infrastructure and Terminal Experience team. Today the Bloomberg Terminal runs a lot of JavaScript. Our team provides a JavaScript environment to engineers across the company. Bloomberg may not be the first company you think of when discussing JavaScript. It certainly wasn't for me in 2018 before I worked
Writing Good Unit Tests
In my first job as a software engineer the project I was working on grew out of control. As often happens, use cases were added without proper refactoring and with more users we were drowning in support tickets and nothing seemed to work. It was clear we needed to push for quality so we started adding unit tests. The tech lead at the time mandated high test coverage. But here's the reality: writin
JSer.info 15周年: 15年間のJavaScriptを振り返る
2011年1月16日に開始したJSer.infoは、2026年1月16日で15周年を迎えました🎉 JSer.infoは15年間で820件の記事を公開し、13,606件のサイト/記事/ライブラリを紹介してきました。週1回の更新を15年間継続しています。 この記事では、15年間のJSer.infoのデータを振り返りながら、JavaScriptエコシステムがどのように変化してきたかを見ていきます。 なお、この記事のデータはJSer.infoで紹介した記事の傾向であり、JavaScriptエコシステム全体を示すものではありません。 また、2024-2025年はJSer.info自体の投稿数が減少しているため、データにも2025年に減少傾向が出てしまっている点に注意してください。 15年間の基本統計 項目 数値 総投稿数 820回 総紹介記事数 13,606件 運営期間 2011年1月〜2026年
Introducing: React Best Practices - Vercel
We've encapsulated 10+ years of React and Next.js optimization knowledge into react-best-practices, a structured repository optimized for AI agents and LLMs. React performance work is usually, well, reactive. A release goes out, the app feels slower, and the team starts chasing symptoms. That’s expensive, and it’s easy to optimize the wrong thing. We’ve seen the same root causes across production
Streaming JSON in just 200 lines of JavaScript
I was continueing my exploration of React server components when I stumbled upon on this article about progressive JSON. Dan Abramov describes a technique for streaming JSON from a server to a client in chunks, allowing the client to start rendering parts of the data before the entire payload has been received. This can significantly improve perceived performance, especially for large datasets. So
How to compile JavaScript to C with Static Hermes
12/29/2025 Lately, I've been working on porting more of Parcel to Rust. One of the challenges with Rust-based tools is how to support plugins. Many of the most common tools already have Rust-based equivalents: SWC and OXC for JavaScript, Lightning CSS for CSS, oxvg for SVG, etc. But other popular tools like React Compiler, Less, and Sass, are still written in JavaScript, so we need a way to run th
The many, many, many JavaScript runtimes of the last decade
This last decade has seen an inundation of new JavaScript runtimes (and engines in equal measure), enabling us to run JavaScript in all manner of contexts with precise fitness for task. Through these, we've seen the language spread to the Cloud, the edge, Smart TVs, mobile devices, and even microcontrollers. In this article, we'll explore what's driving this diversity, and why no one runtime or en
第三者のJavaScriptをセキュアに実行するには？― exaBase Studio のプラグイン機能
メリークリスマス🎄 Studio Application 開発グループの吉田です。 エクサウィザーズのAdvent Calendar 25日目、最終日です！ exaBase Studio に Figma みたいなプラグイン機能を入れたい これはけっこう前からずっと頭の片隅にあったアイデアでした。 exaBase Studio（エクサベース スタジオ）はアプリケーション開発基盤ですが、Figma のようなキャンバス画面を持っています。キャンバスを読み書きできるプラグインをユーザー自身が自由に開発できれば、Studioの機能を拡張することができます。 exaBase Studio とは exaBase Studio は、エクサウィザーズが提供するクラウドネイティブな AI サービス開発環境です。GUI でシステム設計ができ、ワンクリックで Kubernetes ベースの本番環境を自動構築でき
Standard JSON Schema
A standardized JSON Schema representation that preserves inferred type information Standard JSON Schema is a common interface designed to be implemented by JavaScript and TypeScript entities that are or can be converted to JSON Schema. The goal is to make it easier for ecosystem tools to accept user-defined types (typically defined using schema/validation libraries) without needing to write custom
I Built the Same App 10 Times: Evaluating Frameworks for Mobile Performance | Loren Stewart
Performance context: All frameworks tested achieve excellent Lighthouse scores (100) with similar First Contentful Paint times. Since performance is essentially identical, bundle size is what differentiates these frameworks for mobile users. The 6.1x range matters for data usage, parse time, and battery consumption. Field data validation: The Chrome User Experience Report (CrUX) provides real-worl
Introducing TanStack Start Middleware – Frontend Masters Blog
TanStack Start is one of the most exciting full-stack web development frameworks I’ve seen. I’ve written about it before. In essence, TanStack Start takes TanStack Router, a superb, strongly-typed client-side JavaScript framework, and adds server-side support. This serves two purposes: it gives you a place to execute server-side code, like database access; and it enables server-side rendering, or
Oxlint JS Plugins Preview
Earlier this year we asked for input from the community to inform design for Oxlint support for custom JS plugins. Today, we are pleased to announce the result of many months of research, prototyping, and finally building: Oxlint supports plugins written in JS! Key features ESLint-compatible plugin API. Oxlint will be able to run many existing ESLint plugins without modification.An alternative AP
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The Intl API: The best browser API you're not using | Polypane
Third Parties and Single Points of Failure
Moving Mountains: How We Migrated from Enzyme to React Testing Library