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Vercel's mission is to provide the speed and reliability innovators need to create at the moment of inspiration. Last year, we focused on speeding up the way Next.js bundles your apps. Each time we moved from a JavaScript-based tool to a Rust-based one, we saw enormous improvements. We migrated away from Babel, which resulted in 17x faster transpilation. We replaced Terser, which resulted in 6x fa
Common mistakes with React Testing LibraryMay 4th, 2020 — 15 min read Hi there 👋 I created React Testing Library because I wasn't satisfied with the testing landscape at the time. It expanded to DOM Testing Library and now we have Testing Library implementations (wrappers) for every popular JavaScript framework and testing tool that targets the DOM (and even some that don't). As time has gone on,
Electron Forge is an all-in-one tool for packaging and distributing Electron applications. It combines many single-purpose packages to create a full build pipeline that works out of the box, complete with code signing, installers, and artifact publishing. For advanced workflows, custom build logic can be added in the Forge lifecycle through its Plugin API. Custom build and storage targets can be h
While developing a new project is like rolling on a green field for you, maintaining it is a potential dark twisted nightmare for someone else. Here's a list of guidelines we've found, written and gathered that (we think) works really well with most JavaScript projects here at elsewhen. If you want to share a best practice, or think one of these guidelines should be removed, feel free to share it
dotsで開催されたReactの導入を検討されてる方向けの勉強会でお話しました https://eventdots.jp/event/597088
渋日記@shibu.jp 渋川よしきの日記です。ソフトウェア開発とか、ライフハックを中心に記事を書いていきます。 メモリリーク。一言でプログラマを死に追いやる恐怖の言葉。C/C++の世界ではmallocしたのにfreeしないとかのケアレスミスでよく起きていた問題です。その後、ガベージコレクタが掃除してくれるプログラミング言語が増え、一部の言語で循環参照に気をつけるぐらいであまり気にしなくても良い的な風潮になっています。 というものの、そうとも言ってられなくない状況も増えてきています。クラウドのスケールアウトブームも一段落というかコモディティ化し、go言語で再び性能向上方面に関心が寄せられたり、日本でErlangの勉強会が満席になったり、スケールアウトから再びスケールアップ方面に話題が移りつつあるのを感じます。長時間稼働のサーバで、スケールアップしてさらに数多くのリクエストを大量に受けるよう
After I prototype an app I'm building, my time is split between the editor and the browser with the console open. I try to debug as I go to avoid creating a complete mess. Moreover, when I get a bug report for a production app the first thing that I do is try to debug using Chrome devtools, and I usually find the bug without touching my editor. To be effective at that, I had to learn a great deal
Last Updated on August 4, 2022 by Dev Support One of the easiest performance wins you can gain for your website is to combine and compress your JavaScript and CSS files. But what happens when you need to debug the code within those compressed files? It can be a nightmare. Fear not however, there is a solution on the horizon and it goes by the name of source maps. A source map provides a way of map
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