The year is 2024, and Node.js has reached version 23. With two semver-majors released per year, it might be difficult to keep track of all aspects of Node.js. This article revisits the State of Node.js performance, with a focus on comparing versions 20 through 22. The goal is to provide a detailed analysis of how the platform has evolved over the past year. This is a second version of "The State o
By: Michael Mitchell, Patrick Hayes We previously wrote about how Airtable migrated its codebase from Flow to TypeScript. A few years and several TypeScript versions later, TypeScript is still a critical tool for preventing bugs early on in the development cycle. Back when the previous article was written, we had just over 50 TypeScript projects — mostly mirroring the top-level directory structure
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
Vue is built to handle most typical use cases efficiently without requiring a lot of manual tweaking. But sometimes, you’ll hit situations that need a bit more fine-tuning. In this article, we’ll go over the key things to keep an eye on for optimizing performance in a Vue app. Page Load Performance vs. Update Performance When talking about optimizing performance in Vue apps, there are two main as
こんにちは，株式会社 AbemaTV Web browser チームの山﨑です． 私たちのプロダクトでは JavaScript や TypeScript などの静的解析ツールである ESlint を CI で活用しています．しかし，ESlint の実行が不安定になっており開発速度や開発者体験が低下している問題が発生していました．具体的には， eslint を実行している CircleCI のインスタンスクラスを large にしても，job の失敗率が 50% を超えてしまっているような状態でした． この問題を解決すべく，eslint のルール毎の実行時間を計測する TIMIMG オプションを活用することでボトルネックとなっていたルールの特定・精査を行いました． 今回の記事では，不安定だった CI 上での ESlint 実行を TIMIMG オプションを活用し安定化させるに至った話をします
This guide covers some modern web performance features of Chrome DevTools, with a focus on the new Performance Panel features which helps you optimize Core Web Vitals and improve your general web performance. What We'll Cover In this guide, we'll dive deep into the new Performance Panel features in Chrome DevTools. We'll explore what the new features are, how to access it, and how to use it effec
Track page speed over time and get the data you need to optimize it. Font performance optimization is a set of web development techniques that make fonts load faster and render more smoothly. They involve practices such as thoughtful font selection, the use of performant font formats, self-hosting, optimized @font-face declarations, font display strategies, and more. Optimizing the fonts displayed
The Two Lines of CSS That Tanked Performance (120fps to 40fps) First published: 22/08/2024 I recently released Learn WCs. If you’ve seen it, you’ve likely noticed the animation in the background, where the coloured circles move diagonally across the screen. It looks like this: It works nicely on Chrome and Safari, but I noticed a severe drop in performance on Firefox. You might not be able to see
For this post, we used data from page navigations with a subresource image LCP in Chrome to take a look at the LCP sub-parts. We've looked at this kind of data before, but never from field data to see where real users are spending their time while waiting for a page's LCP. Like with Core Web Vitals, we took the 75th percentile (p75) of each LCP sub-part for each origin in the CrUX dataset, resulti
Patterns for Memory Efficient DOM Manipulation with Modern Vanilla JavaScript July 29, 2024 I’ll discuss best practices to avoid excess memory usage when managing updating the DOM to make your apps blazingly fast™️. DOM: Document Object Model – A Brief Overview When you render HTML, the live view of those rendered elements in the browser is called the DOM. This is what you’ll see in your developer
Node.js includes a built-in module called performance hooks for precise performance measurement. But why use it when you can simply log timestamps and calculate the difference between two dates? At least because it is precise. The module uses a monotonic clock that allows you, as a user, to make performance measurements and be sure that they are not corrupted. At first, I struggled to understand h
Apr 10, 2024 by Alan Baradlay, Antti Koivisto, Matt Woodrow, Patrick Angle, Ryosuke Niwa, Vitor Ribeiro Roriz, Wenson Hsieh, and Yusuke Suzuki The introduction of Speedometer 3.0 is a major step forward in making the web faster for all, and allowing Web developers to make websites and web apps that were not previously possible. In this article, we explore ways the WebKit team made performance opti
I often feel like javascript code in general runs much slower than it could, simply because it’s not optimized properly. Here is a summary of common optimization techniques I’ve found useful. Note that the tradeoff for performance is often readability, so the question of when to go for performance versus readability is a question left to the reader. I’ll also note that talking about optimization n
sourceImagine your team secured a budget for doubling the number of software engineers. That’s great! You can finally fix all the bugs, implement new ideas, and clean up all the technical debt that’s been accumulating for years. Right? Wait, wait… Not so fast. First, it will take time to hire new software engineers and onboard them. They’ll need to learn the product domain, deep dive into the tech
As announced on browserbench.org today, in collaboration with other browser engine developers, Apple’s WebKit team is excited to introduce Speedometer 3.0, a major update that better reflects the Web of today. It’s built together by the developers of all major browser engines: Blink, Gecko, and WebKit with hundreds of contributions from companies like Apple, Google, Intel, Microsoft, and Mozilla.
こんにちは。フィナンシャル開発センターの鈴木です。LINE証券のフロントエンドを担当しています。この記事は【LINE証券 FrontEnd】シリーズの4番目の記事です。 最近のWeb Vitalsの隆盛を受けて、LINE証券のフロントエンドでもパフォーマンスの改善に取り組み始めました。およそ2週間ほど改善に取り組んだ結果として、開発環境での計測ではLighthouseのperformanceスコアが従来より30点ほど上昇しました。 パフォーマンス改善のためにさまざまな施策を行いましたが、この記事ではその中でも興味深かったものとして、requestIdleCallbackを活用してLazy Loadingされるコンポーネントの読み込みを遅延し、その結果初期レンダリングにかかる時間を約14%削減できた事例をご紹介します。 環境 以前の記事でご紹介したとおり、LINE証券のフロントエンドはTyp
Million Lint is in public betaAiden Bai (opens in a new tab), John Yang (opens in a new tab), Nisarg Patel (opens in a new tab) – February 29, 2024 It’s launch time. After three months and hundreds of commits, we invite you to try out Million Lint. The experience is not finished – there are a few known bugs and several missing features – but we are really happy with how it's shaping up and couldn'
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