unstated-next による Redux に頼らない状態管理の考察React.kyoto v0.3.0 でのLT発表資料です。 https://react-kyoto.connpass.com/event/137847/
Modern Script Loading - JASON Format
Serving the right code to the right browsers can be tricky. Here are some options. Serving modern code to modern browsers can be great for performance. Your JavaScript bundles can contain more compact or optimized modern syntax, while still supporting older browsers. The tooling ecosystem has consolidated on using the module/nomodule pattern for declaratively loading modern VS legacy code, which p
入門Node.jsプログラミング | 翔泳社
JavaScript（ES2015以降）をフル活用して 柔軟性に富んだWebアプリを作成しよう！ フロントエンドもバックエンドも JavaScriptのスキルを120％活用する 本書は 「Get Programming with Node.js」 Jonathan Wexler, Manning Publications Co, 2019 の翻訳書です。 アプリケーションを構築できるプラットフォームは数多く存在します。Node.jsは、そのひとつですが、Webアプリケーション（インターネットを介してリクエストを処理し、応答として処理したデータとビューを返すアプリケーション）の構築に適している点が最大の特徴です。 本書は、純粋にJavaScript（ECMAScript 2015以降）だけを使ってアプリケーションを構築する手法と、その手立てを提供します。そのため、JavaScriptの機能と
Project Fluent
Asymmetric Localization Natural-sounding translations with genders and grammatical cases only when necessary. Expressiveness is not limited by the grammar of the source language. Progressive Enhancement Translations are isolated; locale-specific logic doesn't leak to other locales. Authors can iteratively improve translations without impact on other languages. Fully-Featured Date, time, and number
Release v2.0.1 · MithrilJS/mithril.js
This is really what v2.0.0 was supposed to be, but the npm upload got botched the first time around. Breaking changes API: Component vnode children are not normalized into vnodes on ingestion; normalization only happens if and when they are ingested by the view (#2155 (thanks to @magikstm for related optimization #2064)) API: m.redraw() is always asynchronous (#1592) API: m.mount() will only rende
pure JS WiFi QR Code Generator
Ever wanted to create a cool QR code for your guests? But never wanted to type in your WiFi credentials into a form that submits them to a remote webserver to render the QR code? QiFi for the rescue! It will render the code in your browser, on your machine, so the WiFi stays as secure as it was before (read the code if you do not trust text on the internet :-))! If you use the Save-button to store
JavaScripr言語にリアクティビティを実現するフロントエンドフレームワークSvelte 3 - 作者のRich Harris氏に聞く
原文(投稿日：2019/05/06)へのリンク Svelteフロントエンドフレームワークは先頃、Svelte 3をリリースした。Svelte 3では、ユーザーインターフェイスの実装に関連して、エンティティをリンクするインバリアントを宣言的に表現する、新たな方法を導入している。これによって開発者は、パフォーマンスを意識して再レンダリングを実施したり、状態依存の部分を意識的に同期するような処理が不要になる可能性がある。新しいロゴとキャッチフレーズ、Webサイトも用意された。Sapper(Svelteを搭載したNext.jsスタイルのアプリケーションフレームワーク)とSvelte Native (モバイルアプリケーション開発をターゲットとする)は、Svelte 3にアップグレードされている。InfoQは今回、Svelteの開発者であるRich Harris氏にインタビューして、Svelte 3の
Weak references and finalizers · V8
Show navigation Generally, references to objects are strongly held in JavaScript, meaning that as long you have a reference to the object, it won’t be garbage-collected. const ref = { x: 42, y: 51 }; // As long as you have access to `ref` (or any other reference to the // same object), the object won’t be garbage-collected.Currently, WeakMaps and WeakSets are the only way to kind-of-weakly referen
GitHub - ehmicky/test-each: 🤖 Repeat tests. Repeat tests. Repeat tests.
🤖 Repeat tests. Repeat tests. Repeat tests. Repeats tests using different inputs (Data-Driven Testing): test runner independent: works with your current setup generates test titles that are descriptive, unique, for any JavaScript type (not just JSON) loops over every possible combination of inputs (cartesian product) can use random functions (fuzz testing) snapshot testing friendly // The example
Is postMessage slow? — surma.dev
Toggle dark mode No, not really. (It depends.) What does “slow” mean? I said it before, and I will say it again: If you didn’t measure it, it is not slow, and even if you measure it, the numbers are meaningless without context. That being said, the fact that people will not even consider adopting Web Workers because of their concerns about the performance of postMessage(), means that this is worth
Algebraic Effects for the Rest of Us — overreacted
Algebraic Effects for the Rest of UsJuly 21, 2019 Have you heard about algebraic effects? My first attempts to figure out what they are or why I should care about them were unsuccessful. I found a few pdfs but they only confused me more. (There’s something about academic pdfs that makes me sleepy.) But my colleague Sebastian kept referring to them as a mental model for some things we do inside of
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