Our May 2026 recap covers VoidZero joining Cloudflare, Rolldown reaching 1.0 stable, and more.

Local-first session search, analytics, insights, and token use statistics for coding agents, supporting Claude Code, Codex, and more than 20 other agents. - kenn-io/agentsview

Local-first desktop and web app for AI agent sessions

A designer and an engineer shipped a production MVP in four weeks on Rails + Inertia. In this post, we share our agentic coding stack, the skills we built, and why it clicked.

まさに黒船来航といったところでしょうか。 先月、OpenAIは内部モデルを使ってエルデシュの単位距離問題を解決したと発表しました。これは、AIが初めて数学における重要な未解決問題を解いた例であるという意味で、極めて重要な意義を持つと思います。 本記事は、今、数学界で何が起こっているのかを、数学者である筆者が私見も交えつつ解説し、まとめるものです。第一部では数学的内容を、第二部では専門家による評価を、第三部では今後の展望について書いています。 主な参考文献は二つあります。 一つ目はOpenAIによる当該論文(https://cdn.openai.com/pdf/74c24085-19b

Self-hosted Google Fonts configurator.

🛏 An HTML to Markdown converter written in JavaScript - mixmark-io/turndown

Convert any web page to clean, readable Markdown with just one click. - Ademking/MD-This-Page

Sometimes not doing something is the right move.

Node.js is moving to one major release a year, year-based version numbers, every release becoming LTS, and a new Alpha channel. Here is what changes.

Exploring the API design behind Playwright fixtures, and how a simple test API hides a surprisingly magical implementation.

Learn how to use a VS Code agent hook to detect edits to a specific file and trigger deterministic follow-up automation.

A safe, zero-dependency expression language for rules, filters, and templates - danfry1/bonsai-js

A zero-dependency expression engine for pricing rules, search filters, templates, and user-authored conditions.

FFmpeg bindings for Node.js. Features both low-level and high-level APIs, full hardware acceleration, TypeScript support, and modern async patterns - seydx/node-av

FFmpeg bindings for Node.js

Environment variable validation for Node, Bun, and other compatible JS runtimes - af/envalid

In React, it’s always preferable to maintain a linear data flow. If a parent needs something, lift the state instead of smuggling it back up. All rules are made to be broken, though.

Modern engineering values.

a fast local diff viewer. Contribute to nkzw-tech/codiff development by creating an account on GitHub.

Deno emerged as a solution to the overwhelming configuration requirements of the modern TypeScript ecosystem by offering a zero-config, single-binary experience. By integrating essential tools for formatting, linting, and testing alongside web-standard APIs, it removed the tedious setup rituals that often deterred developers. Recently, however, Deno has pivoted toward deep Node.js compatibility, supporting npm packages and traditional module structures to accelerate adoption. This shift creates a strategic risk where high compatibility might inadvertently discourage developers from targeting Deno’s unique APIs, especially as Node.js adopts Deno’s innovations like native TypeScript support and permission models. Commercial pressures may be forcing a prioritization of rapid growth and compatibility over the patient development of a truly self-sufficient, vertically integrated toolchain. While Deno remains a powerful choice, its convergence with the legacy ecosystem suggests a move away from the radical simplicity that originally defined its mission. The ongoing convergence of runtimes serves as a vital reminder of the trade-offs between technical purity and the demands of commercial viability.

Sourcemaps unlock some observability benefits but might expose your codebase. Check out how they work, and how to protect yourself.

Accessible modal dialogs with minimal configuration. Just 1.9kb minified and gzipped, its a tiny library for big change.

⭕ Tiny javascript library for creating accessible modal dialogs - micromodal/Micromodal

Find more performant and safer replacements for outdated or unnecessary npm packages.

Turning Chrome's Built-in AI to tackle Zork

Flow vs. TypeScript: how object exactness, variance defaults, `as` casts, type guards, and Flow's `component`/`hook`/`renders` syntax differ from TypeScript.

Active link styling is one of the most common things you need in a real application. Here is how to build a reusable NavLink component for a Next.js app, taking inspiration from React Router, that handles Cache Components and flicker-free hydration.

Applications often end up with all sorts of UI whose sole purpose is to occupy the space where data should eventually appear. We're all spending a surprising amount of time solving the same problem, and none of it is really product work.