GitHub - lynx-family/primjs: JavaScript Engine Optimized for LynxYou signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session. Dismiss alert
Turbocharging V8 with mutable heap numbers · V8
At V8, we're constantly striving to improve JavaScript performance. As part of this effort, we recently revisited the JetStream2 benchmark suite to eliminate performance cliffs. This post details a specific optimization we made that yielded a significant 2.5x improvement in the async-fs benchmark, contributing to a noticeable boost in the overall score. The optimization was inspired by the benchma
Speeding up the JavaScript ecosystem - Rust and JavaScript Plugins
Over the past year (2024) there has been a strong movement to rewrite JavaScript tools in Rust to make them faster. Rust is well suited for this as it runs much closer to hardware and doesn't rely on garbage collection. This makes it an ideal candidate for computationally intensive tasks. Linting in its basic form is such a task, as it involves parsing and traversing lots of source code. But there
Web における Beacon の変遷 (sendBeacon(), fetch() keepalive, fetchLater()) | blog.jxck.io
Intro ページを閉じる際に何かしらの情報をサーバで収集したいケースがある。 これを Beacon の送信(Beaconing)と呼び、ブラウザではページ表示中に収集したパフォーマンス統計の収集や、広告タグによるトラッキングなどに用いられる。 しかし、「ページが閉じる直前に、サーバにリクエストを送信する」を確実に実行するのは実は難しく、これを標準技術で実現する過程で、複数の API が生まれるに至った。 各 API の策定経緯と、挙動の違いについて解説していく。 <img> での送信 最もプリミティブな Beacon の送信は、<img> を用いたものだった。 window.addEventListener("unload", () => { const beaconImage = new Image(1, 1); beaconImage.src = "https://telemetry
ECMAScript feature: regular expression pattern modifiers
For more information, see the section on flags in “Exploring JavaScript”. The remaining flags are not supported because they would either make regular expression semantics too complicated (e.g. flag v) or because they only make sense if applied to the whole regular expression (e.g. flag g). What are the use cases for pattern modifiers? # Use case: changing flags for part of a regular expression
Case Study — Using a JavaScript component inside a Haskell application | The Haskell Programming Language's blog
Mateusz Goślinowski January 08, 2025 [GHC] #javascript #case-study GHC since version 9.8 allows us to create callbacks from JS to Haskell code, which enables us to create full-fledged browser apps. This article shows how to use the JS backend with foreign component libraries. repository: https://github.com/Swordlash/halogen-blog ghc used: javascript-unknown-ghcjs-ghc-9.12.1 (ghcup) Preface Any use
Zero Docs
Developing web applications has gotten insanely complex. You need a tall pile of tech to build a "modern" web app: client-side code, server-side code, APIs to tie them together, data fetching, state management, hydration, websockets for reactivity, and a whole lot more. And once you're done, the resulting app still isn't very good. It's time for a rethink. We're building an open-source, general-pu
How To Improve INP: Yield Patterns
In the following, we’ll go over different patterns we can use to yield to the main thread to improve the Interaction-to-Next-Paint (INP). Knowing how to improve INP is more important than ever, as it’s a metric reflecting User Experience (UX) and has recently been added to the Core Web Vitals (CWVs) – which are used by Google’s search ranking. We’ll take a look at which part of INP we’re targettin
GitHub - samizdatco/skia-canvas: A GPU-accelerated 2D graphics environment for Node.js
Skia Canvas is a browser-less implementation of the HTML Canvas drawing API for Node.js. It is based on Google’s Skia graphics engine and, accordingly, produces very similar results to Chrome’s <canvas> element. The library is well suited for use on desktop machines where you can render hardware-accelerated graphics to a window and on the server where it can output a variety of image formats. Whil
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The greatness and limitations of the js-framework-benchmark
I love the js-framework-benchmark. It’s a true open-source success story – a shared benchmark, with contributions from various JavaScript framework authors, widely cited, and used to push the entire JavaScript ecosystem forward. It’s a rare marvel. That said, the benchmark is so good that it’s sometimes taken as the One True Measure of a web framework’s performance (or maybe even worth!). But like
Re-implementing JavaScript's == in JavaScript
This post is for people who are familiar with JavaScript’s == operator. JavaScript’s “double equals” operator, ==, is typically discouraged. And for good reason: its behavior is tricky. Where === asks “are these the same thing?”, the double-equals operator asks a question that’s not straightforward. More specifically, == implements something called the Abstract Equality Comparison Algorithm, a 13-
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A Mere Mortal's Introduction to JIT Vulnerabilities in JavaScript Engines - TrustFoundry
GitHub - LeaVerou/style-observer: Run JS when a CSS property changes. Any CSS property.
Jack Duvall's Blog - All Javascript Keyboard Shortcut Libraries Are Broken
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GitHub - cmiscm/leonsans: Leon Sans is a geometric sans-serif typeface made with code in 2019 by Jongmin Kim.
