Bookmarks

Build reusable React components with React 19 Actions using useTransition() and useOptimistic(). Learn how to track pending states, implement optimistic updates, and expose action properties for custom logic in the Next.js App Router with practical examples.

Watt optimizes Next.js on Kubernetes for 93% faster latency and near-perfect reliability, overcoming scaling challenges.

Stop treating SPAs and SSR as opposing paradigms. The browser already loads resources in parallel—you just have to use it.

Why TypeScript’s built-in Omit breaks discriminated unions, and how a distributive version preserves them.

As well as testing the core functionality of your code with regular tests, you can use automated tools to test that your app or website has good accessibility. In this post, I will explain how and what tools you can use, and why manual testing is still essential...

React Router is adding React Server Components support! Learn how to enable RSC, use server components in routes and loaders, and leverage server functi...

Fast, Simple, Fully Typed JavaScript from the Future

ReScript is a robustly typed language that compiles to efficient and human-readable JavaScript. - rescript-lang/rescript

Another wave of Shai-Hulud campaign has hit npm with more than 500 packages and 700+ versions affected.

Modern web development involves transforming your source code before deploying it. We minify JavaScript to reduce file sizes, bundle multiple files together, transpile TypeScript to JavaScript, and convert modern syntax into browser-compatible code.

Elegant types in Ruby

Learn about trends in Ruby development and opportunities for improving performance that many organizations are leaving on the table.

Malware driving attack includes "dead man's switch" that can harm user data.

Learn more about the agentic security principles that we use to build secure AI products—and how you can apply them to your own agents.

Discover how Python changed developer culture—and see why it keeps evolving.

はじめに 「Just use Postgres」という言葉を初めて聞いたのは、いつだったか覚えていません。Twitter か Hacker News か、あるいは社内の Slack か。どこで聞いたにせよ、私の反応は決まっていました。「また極端なことを言う人がいる」と。 「それ、〇〇でもできますよ」——この手のフレーズ…

はじめに 🚀 こんにちは！2 回目の登場です！ YOUTRUST で Web エンジニアをしている林（YOUTRUST）です。 今月末で入社してから半年が経ちました。 なんとこの半年の間に 4 つもの YOUTRUST 主催のイベントが開催されました！😲 （小さいものを含めるともっと） 日々の開発業務だけでなく、こうい…

そういうコマンドがあるわけではありません。 以下のような git alias を .gitconfig に設定すると git aicommit で Claude にコミットメッセージを書かせられるというだけです。 [alias] aicommit = "!f() { COMMITMSG=$(claude -p 'Gen…

A radically different micro-frontends solution that actually works and is easy to incrementally adopt. - web-fragments/web-fragments

🚀 An incremental, low-risk, high ROI approach, to building micro-frontends.

Write type-safe, composable, future-proof Design Systems code using styleframe's powerful TypeScript CSS API. - styleframe-dev/styleframe

From simple UI styles to full Design Systems, write code using Styleframe’s powerful TypeScript CSS API — AI-ready by design.

✅ ESLint plugin to enforce the JavaScript Baseline. - 3ru/eslint-plugin-baseline-js

数週間前、私たちの本番アプリがハングし始めました。コンポーネントがランダムに読み込まれなくなったのです。ユーザーの画面ローディングスピナーの前で固まってしまいました。40時間デバッグした末に、私たち…

2025/11/23 TSKaigi Hokuriku2025 に登壇した際の資料です。 https://hokuriku.tskaigi.org/ 複数のドメインコンテキストで構成されるWebシステムは、コンテキストを跨ぐ更新を行う同期APIがパフォーマンスの悪化や障害の連鎖を招き、ユーザー体…

Stop waiting for GitHub Actions. Rails 8.1's local CI runs your tests in seconds on your own machine. Here's how it works.

Backup automation for self-hosters. Contribute to nicotsx/zerobyte development by creating an account on GitHub.

Anthropic released Claude Opus 4.5 this morning, which they call “best model in the world for coding, agents, and computer use”. This is their attempt to retake the crown for …