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
JavaScript の Object 比較を変えるか？ 新しいプロポーザル proposal-composite とは - エムスリーテックブログ
皆さん、こんにちは！ デジスマチームの小島(@jiko_21)です。 このブログはデジスマチームブログリレーの 2 日目の記事です。 JavaScript の進化は止まりませんね！ 毎年、新しい仕様が TC39（ECMAScript の標準化委員会）にて議論され追加されています。 今回は、最近 TC39 に追加された、proposal-compositeについてご紹介します。これは、JavaScript におけるObjectの比較という、長年の課題を解決する可能性を秘めた興味深い提案です。 proposal-composite について SameValueZero による評価戦略 SameValueZero とは？ SameValueZero の動作原理（疑似コードで理解する） proposal-composite がどのようなアプローチで解決を目指すのか？ Composite の多岐にわ
Prettier 3.6: Experimental fast CLI and new OXC and Hermes plugins! · Prettier
This release includes several important feature additions that we're excited to share with you. First, we're shipping a new experimental high-performance CLI behind a feature flag (--experimental-cli). This CLI was previously only available in prettier@next, but now you can enable it simply by using a flag. We encourage you to try it out and share your feedback! If you are interested in the intern
Biome v2—codename: Biotype
We are happy to announce that Biome v2 is officially out! 🍾 Biome v2—codename: Biotype, the first JavaScript and TypeScript linter that provides type-aware linting rules that doesn’t rely on the TypeScript compiler! This means that you can lint your project without necessarily installing the typescript package. With this release, the Core Contributors of the project want to show to the whole comm
Nova
Welcome!Nova is a JavaScript (ECMAScript) and WebAssembly engine written in Rust and following data-oriented design principles. It is currently nothing more than a fun experiment to learn and to prove the viability of such an engine, but may very well become something much more in the future. The engine is still very limited in it's capabilities only passing about 48% of the test262 test suite. Ho
Why are 2025/05/28 and 2025-05-28 different days in JavaScript?
Why are 2025/05/28 and 2025-05-28 different days in JavaScript? 2025-05-28 While setting up this site itself, I ran into the following oddity: console.log(new Date('2025/05/28').toDateString()); // Wed May 28 2025 console.log(new Date('2025-05-28').toDateString()); // Tue May 27 2025 // Bonus: (omit leading 0) console.log(new Date('2025-5-28').toDateString()); // Wed May 28 2025 You may get differ
DeepIntoDev | In-Depth Software Development Insights
In the world of software development, filled with frameworks, libraries, and abstractions, I often felt like I was just using technologies without truly understanding them. So, I started digging deeper, reading more, researching, and questioning everything. That’s why I created this blog: to break down complex programming concepts into simpler, easy-to-understand explanations. Explore the Most Pop
Bare | Fast, Lightweight Runtime for Modular JavaScript Apps
Bare is a small and modular JavaScript runtime for desktop and mobile. Like Node.js, it provides an asynchronous, event-driven architecture for writing applications in the lingua franca of modern software. Unlike Node.js, it makes embedding and cross-device support core use cases, aiming to run just as well on your phone as on your laptop. The result is a runtime ideal for networked, peer-to-peer
On JavaScript's Weirdness - Stack Auth
“JavaScript sucks because '0' == 0!” - literally everyone ever Sure, that part of JavaScript sucks, but every JS setup these days contains a linter that yells at you for code like that. Instead, I want to talk about some of the weirder quirks of JavaScript — those that are much more insidious than that — the kind of stuff you wouldn't find on r/ProgrammerHumor or a JS tutorial. All of them can occ
Could JavaScript have synchronous `await`?
In JavaScript, code has color: It is either synchronous or asynchronous. In this blog post, we explore: The problems caused by that How to fix them via synchronous await The two downsides that prevent synchronous await from being practical The problems of asynchronous code being different from synchronous code # The key problem is that synchronous code can’t call asynchronous code. On one hand th
Land ahoy: leaving the Sea of Nodes · V8
V8’s end-tier optimizing compiler, Turbofan, is famously one of the few large-scale production compilers to use Sea of Nodes (SoN). However, since almost 3 years ago, we’ve started to get rid of Sea of Nodes and fall back to a more traditional Control-Flow Graph (CFG) Intermediate Representation (IR), which we named Turboshaft. By now, the whole JavaScript backend of Turbofan uses Turboshaft inste
JavaScriptがブラウザでどのように動くのか | メルカリエンジニアリング
実際にコードを用いてスタック領域とヒープ領域の概念を説明します。 person オブジェクトを宣言した時、JavaScript エンジンはオブジェクトの実体をヒープ領域にメモリ割り当てを行い、ヒープ領域にある実体への参照をスタック領域にメモリ割り当てを行います。 const person = { name: 'Taro', age: 24 }; 次のように新しい変数(newPerson)に再代入をすると参照がコピーされ、newPerson も person もヒープ領域に割り当てられた同じ実体に対する参照を持ちます。 const newPerson = person; Object.assign を使って新しいオブジェクトを生成するのは、参照コピーをしないための方法の一つで、よく使われる手法の1つです。 function getName(person) { return person.na
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Never write your own Date Parsing Library—zachleat.com
GitHub - wendelmax/v8-rust: Uma engine JavaScript moderna, inspirada no V8 Engine do Google, porém totalmente escrita em Rust.
new Date("wtf")
GitHub - aymericzip/intlayer: Internationalisation solution for JS application focusing on scalability. Make your JavaScript / TypeScript application multilingue.
A brief history of JavaScript | Deno
GitHub - sqliteai/sqlite-js: Create custom SQLite functions in JavaScript. Extend your database with scalars, aggregates, window functions, and collations directly in JavaScript.
GitHub - EvanZhouDev/polycompiler: Merge Python and JS code into one file that can be run in both languages.
Debugging JavaScript Memory Leaks | Bun Blog