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jay-es 2024/12/03
DevTools

performance
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Previous slideNext slideToggle fullscreenOpen presenter view About https://x.com/mizchi Node.js ã¨ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰ã®å°‚é–€å®¶ 120ä¸‡*é”æˆçŽ‡ã§å¾¡ç¤¾ã®ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰ã®é«˜é€ŸåŒ–ã‚’ã‚„ã‚Šã¾ã™ ä»Šæ—¥è©±ã™å†…å®¹ãŒã§ãã¾ã™ã€‚ç¤¾å†…å‹‰å¼·ä¼šç‰ã‚‚æ‰¿ã‚Šã¾ã™ã€‚ è©±ã™ã“ã¨/è©±ã•ãªã„ã“ã¨ è©±ã™ã“ã¨ ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã¨ã„ã†äºˆç®—ã®è€ƒãˆæ–¹ Lighthouseã«ã‚ˆã‚‹è¨ˆæ¸¬ ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’äºŒåˆ†æŽ¢ç´¢ã—ã¦å•é¡Œã‚’ç‰¹å®š è¨ˆæ¸¬ã—ãŸå•é¡Œã®æ‰±ã„æ–¹ è©±ã•ãªã„ã“ã¨ å…·ä½“çš„ãªå•é¡Œã®è§£æ±ºæ–¹æ³•(éƒ½åº¦èª¿ã¹ã¦) ç™ºè¡¨ã®ã‚³ãƒ³ãƒ†ã‚ã‚¹ãƒˆ ç‰¹å®šã‚³ãƒ¼ãƒ‰ã®å½±éŸ¿ç¯„å›²ã®ã¿ã‚’è¨ˆæ¸¬ã™ã‚‹æ–¹æ³•ã‚’å‘¨çŸ¥ã—ãŸã„ ã‚µãƒ¼ãƒ‰ãƒ‘ãƒ¼ãƒ†ã‚£ã‚¹ã‚¯ãƒªãƒ—ãƒˆé–‹ç™ºã§å¤§é‡ã®ã‚¦ã‚§ãƒ–ã‚µã‚¤ãƒˆã‚’è¨ˆæ¸¬ã—ã¦ã„ãŸ æš—é»™çŸ¥åŒ–ã—ã¦ã„ã‚‹ã®ã‚’æ£šå¸ã—ã—ãŸã„ ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰è¨ˆæ¸¬â‰’E2Eè¨ˆæ¸¬ ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰èª²é¡Œã«é™å®šã›ãšã«å…¨éƒ¨ã«å‘ãåˆã† ãƒ¦ãƒ¼ã‚¶ãƒ¼ã¨åŒã˜
jay-es 2024/11/23
Lighthouse, Chrome DevTools ã®å‹˜æ‰€

performance

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jay-es 2024/11/21
Webãƒ•ã‚©ãƒ³ãƒˆ

performance
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How To Optimize Performance In Vue Apps | DebugBear
Vue is built to handle most typical use cases efficiently without requiring a lot of manual tweaking. But sometimes, youâ€™ll hit situations that need a bit more fine-tuning. In this article, weâ€™ll go over the key things to keep an eye on for optimizing performance in a Vue app. Page Load Performance vs. Update Performanceâ€‹ When talking about optimizing performance in Vue apps, there are two main as
jay-es 2024/11/16
Vue ã‚¢ãƒ—ãƒªã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹æ”¹å–„ã‚¬ã‚¤ãƒ‰

Vue

performance
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ãƒã‚¹ãƒˆã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ç½ RE: TypeScriptã§ã€Œé¸æŠžè‚¢ã€ã®å®šç¾©ã‚’Enumçš„ãªå®šæ•°ã«ã¾ã¨ã‚ã‚‹
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jay-es 2024/08/14
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TypeScript

performance
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Web Performance Guide | SpeedCurve
New to the world of web performance? Welcome! Here's everything you need to know to master website monitoring, analytics, and diagnostics.Â Learn how to deliver a fast, joyous experience to all your users. Business Success Making your pages faster isn't just for the web performance geeks in your organization. Site speed affects every business metric you care about â€“ from bounce rate to conversions
jay-es 2024/07/06
Web ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«ã¤ã„ã¦ã®ç¶²ç¾…çš„ãªã‚¬ã‚¤ãƒ‰

performance
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GitHub - e18e/e18e
The e18e (Ecosystem Performance) project is an initiative to bring together the groups and individuals who are passionate about improving performance of the JavaScript ecosystem. Many ongoing efforts are already happening in this space, from dependency tree cleanups to performance optimizations, and much more. Our aim is to provide a space for contributions, ideas and knowledge sharing around the
jay-es 2024/06/29
JavaScript

performance
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e18e
Welcome to e18e! â€‹e18e (Ecosystem Performance) is an initiative to connect the folks and projects working to improve JS packages performance. We'd also like to provide visibility to the efforts of countless Open Source developers working to cleanup, levelup, and speedup our dependencies. We invite you to get involved in the different projects linked from these pages, and to connect with others lik
jay-es 2024/06/29
JS ã‚¨ã‚³ã‚·ã‚¹ãƒ†ãƒ ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å‘ä¸Šãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã€‚ä¾å˜é–¢ä¿‚ã®æ”¹å–„ã€ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸é«˜é€ŸåŒ–ã€å¤ã„ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã®ç½®ãæ›ãˆãªã©

JavaScript

performance
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jay-es 2024/05/15
database

performance

knowledge
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TypeScriptã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹æ”¹å–„
2024/05/11ã«è¡Œã‚ã‚ŒãŸTSKaigiã§ç™ºè¡¨ã—ãŸLTã®è³‡æ–™ã§ã™ï¼ â—Žæ¦‚è¦ TypeScriptã¯JavaScriptã®ã‚¹ãƒ¼ãƒ‘ãƒ¼ã‚»ãƒƒãƒˆã¨ã—ã¦ã€é™çš„åž‹ä»˜ã‘ã¨é«˜åº¦ãªåž‹ã‚·ã‚¹ãƒ†ãƒ ã‚’æä¾›ã—ã€å¤§è¦æ¨¡ãªãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®é–‹ç™ºã‚’åŠ©ã‘ã¦ã„ã¾ã™ã€‚ã—ã‹ã—ã€ã“ã‚Œã‚‰ã®åˆ©ç‚¹ã‚’æœ€å¤§é™ã«æ´»ç”¨ã™ã‚‹ãŸã‚ã«ã¯ã€ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³â€¦
jay-es 2024/05/12
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TypeScript

slide

performance

TSKaigi

knowledge
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This Pattern Will Wreck Your React App's TS Performance
Matt PocockMatt is a well-regarded TypeScript expert known for his ability to demystify complex TypeScript concepts. A couple of years ago, Sentry were having big probl ems with their React app. They'd pretty recently migrated it to TypeScript from JavaScript. And the app was part of a large monorepo. But the IDE performance was slow. You'd often need to wait a couple of seconds after making a chan
jay-es 2024/03/21
äº¤å·®åž‹ã‚ˆã‚Šã‚‚ interface + extends ã®æ–¹ãŒå°‘ã—é€Ÿã„ã€‚interface ã¯ä½œæˆã•ã‚ŒãŸæ™‚ã«ãƒ—ãƒãƒ‘ãƒ†ã‚£ã‚’ãƒã‚§ãƒƒã‚¯ã™ã‚‹ãŒã€type ã¯ä½¿ã†ãŸã³ã«ãƒã‚§ãƒƒã‚¯ã€‚React.HTMLAttributes ã®ã‚ˆã†ãªå·¨å¤§ãªåž‹ã‚’ & ã§æ‹¡å¼µã—å¤šç”¨ã™ã‚‹ã¨é…ããªã‚‹

TypeScript

performance
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Guide to fast websites with Next.js: Tips for maximizing server speeds and minimizing client burden â€“ Vercel
Tinloof is an agency obsessed with delivering fast websites such as jewelry brandÂ Jennifer Fisher, which went from a Shopify theme to a modernÂ Next.jsÂ website that instantly loads with 80% less JavaScript. When evaluating the speed of a website, they look at key metrics in a typical user journey: Server response time: How long it takes for the user to get any feedback once landed on the page.Page
jay-es 2023/12/01
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Next.js

performance
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Speeding up the JavaScript ecosystem - The barrel file debacle
Let's imagine you are working on a big project with many files. You add a new file to work on a new feature and import a function from another directory into your code. import { foo } from "./some/other-file"; export function myCoolCode() { // Pretend that this is super smart code :) const result = foo(); return result; } Excited about finishing your feature, you run the code and realize that it t
jay-es 2023/10/13
barrel file = ä»–ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã‚¨ã‚¯ã‚¹ãƒãƒ¼ãƒˆã™ã‚‹ã ã‘ã®ãƒ•ã‚¡ã‚¤ãƒ«ã€‚ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚°ãƒ©ãƒ•ã®æ§‹ç¯‰ã‚³ã‚¹ãƒˆãŒå¤§å¹…ã«å¢—ãˆã‚‹ã®ã§å‰Šé™¤ã—ãŸæ–¹ãŒã‚ˆã„ã€‚ãƒ†ã‚¹ãƒˆã‚„ãƒªãƒ³ãƒˆã¯ãƒ•ã‚¡ã‚¤ãƒ«ã”ã¨ã«ä½•åº¦ã‚‚ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚°ãƒ©ãƒ•ã‚’æ§‹ç¯‰ã™ã‚‹ã®ã§ç‰¹ã«å½±éŸ¿ãŒã‚ã‚‹

JavaScript

performance
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Get All That Network Activity Under Control with Priority Hints
Get All That Network Activity Under Control with Priority Hints The browser is very good at prioritizing resources requests on its own. But it's not always great. Priority hints makes it easy to provide explicit instructions as to how and in what network activity occurs. Open up the browser's network tab and you'll see a lot of activity. Assets are being downloaded, information's being submitted,
jay-es 2023/09/22
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performance

HTML

JavaScript
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Speeding up the JavaScript ecosystem - npm scripts
If youâ€™re working with JavaScript youâ€™ve likely used the "scripts" field in package.json to set up common tasks for your project. Those scripts can be executed with npm run on the terminal. I noticed that I opted more and more to just call the underlying command directly instead of shelling out to npm run, mostly because it's noticeably faster. But what makes them so much slower in comparison? Tim
jay-es 2023/03/25
npm CLI ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹æ”¹å–„

JavaScript

npm

performance
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Speeding up the JavaScript ecosystem - eslint
We've talked quite a bit about linting in the past two posts of this series, so I thought it's time to give eslint the proper limelight it deserves. Overall eslint is so flexible, that you can even swap out the parser for a completely different one. That's not a rare scenario either as with the rise of JSX and TypeScript that is frequently done. Enriched by a healthy ecosystem of plugins and prese
jay-es 2023/02/11
ESLint å†…éƒ¨ã‚³ãƒ¼ãƒ‰ã‚’ä¾‹ã«ã—ã¦ã€ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã®ãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã‚’æŽ¢ã—ã¦é«˜é€ŸåŒ–ã‚’ç›®æŒ‡ã™è¨˜äº‹ã€‚ãŠã¾ã‘éƒ¨åˆ†ã®ã€ŒRust ã˜ã‚ƒãªãã¦ JS ã§ã‚‚å……åˆ†ã«é«˜é€Ÿãªãƒªãƒ³ã‚¿ãƒ¼ã‚’ä½œã‚Œã‚‹ã€ã¨ã„ã†ä¾‹ãŒèˆˆå‘³æ·±ã„

JavaScript

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Why Is My Jest Suite So Slow?
Our team is a couple of months into developing a new application, and our suite of unit 240 tests takes 46 seconds to run. That duration is not excessive yet, but itâ€™s increasing in proportion to the number of tests. In a couple of months, itâ€™ll take a couple of minutes to run our tests. We were surprised by this, as Jest is known for its fast performance. However, while Jest reported that each te
jay-es 2023/01/21
Jest ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹æ”¹å–„ã€‚`node --inspect-brk` ã‚’ä½¿ç”¨ã—ã¦ãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã‚’æŽ¢ã‚‹ã€‚å·¨å¤§ãªãƒ©ã‚¤ãƒ–ãƒ©ãƒªã¯å¿…è¦ãªãƒ•ã‚¡ã‚¤ãƒ«ã ã‘ã‚¤ãƒ³ãƒãƒ¼ãƒˆã™ã‚‹ã€‚TS ã®åž‹ãƒã‚§ãƒƒã‚¯ã‚’çœã

JavaScript

Jest

testing

performance
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Why Not document.write()? â€“ CSS Wizardry
10 January, 2023 Why Not document.write()? Written by Harry Roberts on CSS Wizardry. Table of Contents What Makes Scripts Slow? The Preload Scanner document.write() Hides Files From the Preload Scanner What About Async Snippets? document.write() Executes Synchronously Is It All Bad? Early document.write() Late document.write() It Gets Worseâ€¦ Avoid document.write() If youâ€™ve ever run a Lighthouse t
jay-es 2023/01/21
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JavaScript

performance
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Using inline JavaScript modules to prevent CSS blockage
Stoyan (@stoyanstefanov) is a former Facebook and Yahoo! engineer, writer ("JavaScript Patterns", "React: Up and Running"), speaker (JSConf, Velocity, Fronteers), toolmaker (Smush.it, YSlow 2.0) and a guitar hero wannabe. Probl em As the previous post puts it: A slow CSS prevents the JavaScript following it from executing. And in addition, when the JS following the CSS is inline, itâ€™s naturally syn
jay-es 2023/01/14
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JavaScript

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JavaScript Start-up Optimization Â |Â Articles Â |Â web.dev
JavaScript Start-up Optimization Stay organized with collections Save and categorize content based on your preferences. As we build sites more heavily reliant on JavaScript, we sometimes pay for what we send down in ways that we canâ€™t always easily see. In this article, weâ€™ll cover why a little discipline can help if youâ€™d like your site to load and be interactive quickly on mobile devices. Delive
jay-es 2022/12/13
JavaScript

performance

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