Claude Code v2.1.154 で Dynamic Workflow と呼ばれる機能が追加されました。Dynamic Workflow は数時間から数日かかるような大規模な作業を実行するために設計されています。最近では Bun を Zig から Rust に移植するプロジェクト が話題を呼びましたが、このプロジェクトにおいても Dynamic Workflow が利用されていたようです。 Dynamic Workflow は複数のサブエージェントをオーケストレーションするための JavaScript スクリプトのことです。ワークフローが開始されると計画をコードに変換します。Claude はタスクに応じてワークフローのスクリプトを生成し、実行時にはそのスクリプトとランタイムがサブエージェントの実行順序や中間結果を管理します。計画をコード化することにより、単にエージェントの数を増やす
Today we’re excited to announce the release of TypeScript 5.0! This release brings many new features, while aiming to make TypeScript smaller, simpler, and faster. We’ve implemented the new decorators standard, added functionality to better support ESM projects in Node and bundlers, provided new ways for library authors to control generic inference, expanded our JSDoc functionality, simplified con
OpenUI は Generative UI を構築するためのフレームワークです。OpenUI 言語と呼ばれる独自の宣言型言語を使用して、AI が UI を構築するための指示を与えるという新しいアプローチを提供します。この記事では OpenUI を使用して Generative UI を実装する方法について解説します。 AI エージェントがチャットの応答で UI を生成する Generative UI と呼ばれる分野が注目を集めています。従来の AI エージェントとの対話はテキストベースが中心です。例えば「京都の旅行の計画をして」といった質問に対して、AI はテキストで観光地の場所を説明したり観光名所の外観を説明しようとしますが、人間の脳は視覚情報で理解する方が得意なため、テキストで長々と説明されるよりも地図や写真を見た方が理解しやすいことが多いです。 Generative UI とは、A
REST API Design Best Practices Handbook – How to Build a REST API with JavaScript, Node.js, and Express.js
By Jean-Marc Möckel I've created and consumed many API's over the past few years. During that time, I've come across good and bad practices and have experienced nasty situations when consuming and building API's. But there also have been great moments. There are helpful articles online which present many best practices, but many of them lack some practicality in my opinion. Knowing the theory with
プログラミングにおいて、ユニットテストを書いてコードが正しく動くか検証することはとても重要です。ユニットテストを導入する目的といえば品質の向上ですが、それ以外にもメリットがたくさんあります。 この記事ではユニットテストを書くとどんなメリットがあるのか、またユニットテストを書くときのちょっとしたコツを紹介します。 ユニットテストを書くメリット 「TODOアプリ」を作っていると仮定して、実際にコードとテストコードを確認しながらメリットを考えてみましょう。 この記事で紹介するテストコードは以下から確認できます。実際に手元で動かせるのでぜひ試してみてください。 コードを確認する ※上記のテストコードはテストフレームワークのVitestを使用して書かれていますが、記事の内容自体はフレームワークによらない普遍的な考え方をもとにしています。 メリット①書いたコードが意図したとおりに動くかすぐ確認できる
Extreme Explorations of TypeScript's Type System | Learning TypeScript
TypeScript's type system is Turing Complete: meaning it has conditional branching (conditional types) and works with an arbitrary huge amount of memory. As a result, you can use the type system as its own programming language complete with variables, functions, and recursion. Developers have pushed the bounds of type operations possible in the type system to write some pretty incredible things! Th
Today we’re excited to announce the availability of TypeScript 4.7! If you’re not yet familiar with TypeScript, it’s a language that builds on JavaScript and adds syntax for types. Types help describe what kinds of values you’re working with and what kinds of functions you’re calling. TypeScript can use this information to help you avoid about mistakes like typos, missing arguments, or forgetting
Today we are excited to announce the beta release of TypeScript 4.7! To get started using the beta, you can use npm with the following command: npm install typescript@beta You can also get editor support by Downloading for Visual Studio 2022/2019 Following directions for Visual Studio Code and Sublime Text 3. Here’s a quick list of what’s new in TypeScript 4.7! ECMAScript Module Support in Node.js
Introduction to Spherical Harmonics for Graphics Programmers
This post requires JavaScript to properly render mathematics (like $\int f(x) dx$, $Y_\ell^m$). It's not likely to work in your browser's "reader mode". On your computer graphics journey, you will eventually run into some paper or code mentioning spherical harmonic functions. They are indeed a very useful tool: with just a few coefficients, they allow us to approximate a given function defined on
Today we’re excited to announce our Release Candidate (RC) of TypeScript 4.7! Between now and the stable release of TypeScript 4.7, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or use npm with the following command: npm install typescript@rc You can also get editor support by Downloading for Visual Studio 2022/2019 Following
Today we’re excited to announce our Release Candidate of TypeScript 5.0! Between now and the stable release of TypeScript 5.0, we expect no further changes apart from critical bug fixes. This release brings many new features, while aiming to make TypeScript, smaller, simpler, and faster. We’ve implemented the new decorators standard, functionality to better support ESM projects in Node and bundler
How a simple Linux kernel memory corruption bug can lead to complete system compromise
In this case, reallocating the object as one of those three types didn't seem to me like a nice way forward (although it should be possible to exploit this somehow with some effort, e.g. by using count.counter to corrupt the buf field of seq_file). Also, some systems might be using the slab_nomerge kernel command line flag, which disables this merging behavior. Another approach that I didn't look
Developer Tools secrets that shouldn’t be secrets | Christian Heilmann
Update: As this is blowing up on Hackernews I added information to each of the tips in which environment they are supported in parenthesis after each heading. When I state “Chromium browsers”, this refers to all browsers that use the Chromium core and also feature all the Developer Tools. This is Chrome, Microsoft Edge, Brave and many more. As a reminder: Microsoft Edge is the browser that comes w
MAI-Thinking-1: Building a Hill-Climbing Machine The Microsoft AI Team 1 Abstract Progress in AI is driven not by a single model, but by the ability to continually improve upon the current state of models. Achieving this requires treating model development as a system-level optimization problem, for which the solution is building a hill-climbing machine for rapid improvement. Our process includes
Biome v2.4—Embedded Snippets, HTML Accessibility, and Better Framework Support
Biome v2.4 is the first minor release of the year! After more than ten patches from v2.3, today we bring to you a new version that contains many new features! Once you have upgraded to Biome v2.4.0, migrate your Biome configuration to the new version by running the migrate command: biome migrate --write Highlights Among all the features shipped in this release, here are the ones we think you’re go
GitHub Pull Requests Version 0.100.0 of the GitHub Pull Requests extension adds Copilot integration: Use the @githubpr chat participant in the Chat view to search for issues, summarize issues/prs, and suggest fixes for issues. @githubpr uses a number of Language Model tools to accomplish this. There's also a new Notifications view that shows GitHub notifications, with an action to prioritize them
--- name: skill-creator description: Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations. license: Complete terms in LICENSE.txt --- # Skill Creator This skill provides guidance for creating effective skills. ## About Skills S
Reading the excellent article by JeanHeyd Meneide on how broken string encoding in C/C++ is made me realise that Unicode is a topic that is often overlooked by a large number of developers. In my experience, there’s a lot of confusion and wrong expectations on what Unicode is, and what best practices to follow when dealing with strings that may contain characters outside of the ASCII range. This a
Node.js
Notable changes Add support for externally shared js builtins By default Node.js is built so that all dependencies are bundled into the Node.js binary itself. Some Node.js distributions prefer to manage dependencies externally. There are existing build options that allow dependencies with native code to be externalized. This commit adds additional options so that dependencies with JavaScript code
Secure Payment Confirmation
Secure Payment Confirmation W3C Candidate Recommendation Draft, 4 June 2026 More details about this document This version: https://www.w3.org/TR/2026/CRD-secure-payment-confirmation-20260604/ Latest published version: https://www.w3.org/TR/secure-payment-confirmation/ Editor's Draft: https://w3c.github.io/secure-payment-confirmation/ Previous Versions: https://www.w3.org/TR/2026/CRD-secure-payment
Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Update 1.72.1: The update addresses these security issues. Update 1.72.2: The update addresses these issues. Welcome to the September 2022 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Tool bar customization - Hide/show
Large Text Compression Benchmark Matt Mahoney Last update: Mar. 25, 2026. history This competition ranks lossless data compression programs by the compressed size (including the size of the decompression program) of the first 109 bytes of the XML text dump of the English version of Wikipedia on Mar. 3, 2006. About the test data. The goal of this benchmark is not to find the best overall compress
Big O
Big O notation is a way of describing the performance of a function without using time. Rather than timing a function from start to finish, big O describes how the time grows as the input size increases. It is used to help understand how programs will perform across a range of inputs. In this post I'm going to cover 4 frequently-used categories of big O notation: constant, logarithmic, linear, and
JupyterLab Changelog — JupyterLab 4.6.0a1 documentation
JupyterLab Changelog# v4.5# JupyterLab 4.5 includes a number of new features (described below), bug fixes, and enhancements. This release is compatible with extensions supporting JupyterLab 4.0. Extension authors are encouraged to consult the Extension Migration Guide which lists deprecations and changes to the public API. Performance and windowing# The default windowing mode is now contentVisibil
ECMAScript proposal “Change Array by copy”: four new non-destructive Array methods
ECMAScript proposal “Change Array by copy”: four new non-destructive Array methods This blog post describes the ECMAScript proposal “Change Array by copy” by Robin Ricard and Ashley Claymore. It proposes four new methods for Arrays and Typed Arrays: .toReversed() .toSorted() .toSpliced() .with() The new methods are for Arrays and TypedArrays # This blog post only demonstrates the new methods with
Aberdeen - v1.4.0
Aberdeen Build fast reactive UIs in pure TypeScript/JavaScript without a virtual DOM. Aberdeen's approach is refreshingly simple: Use many small anonymous functions for emitting DOM elements, and automatically rerun them when their underlying data changes. JavaScript Proxy is used to track reads and updates to this data, which can consist of anything, from simple values to complex, typed, and deep
Node.js
Notable Changes Deprecations and Removals (SEMVER-MAJOR) fs: runtime deprecate string coercion in fs.write, fs.writeFileSync (Livia Medeiros) #42607 (SEMVER-MAJOR) dns: remove dns.lookup and dnsPromises.lookup options type coercion (Antoine du Hamel) #41431 (SEMVER-MAJOR) process: runtime deprecate multipleResolves (Benjamin Gruenbaum) #41896 (SEMVER-MAJOR) stream: remove thenable support (Robert
【2023/05/05 変更】 ES2023 Change Array by Copy の議論によって Array に追加するメソッドが減り、同様に Tuple から取り除かれた pushed や sorted などの独自メソッドについての記述を削除 Symbols as WeakMap keys が ES2023 となったため修正 0, -0, NaN の等価性、同値性が決まったため修正 JSON.parseImmutable が別提案としてスプリットされたため修正 支持されなかった Box についての記述を削除 【2025/04/15 変更】 Record & Tuple が廃止され、後続として新しい提案である Composites が登場したことを追記 JavaScript におけるイミュータブル、ミュータブル JavaScript においてプリミティブはイミュータブル、つまり変更不
Bullshit Jobs
Notes: ISBN 978-1-5011-4331-1, ISBN 978-1-5011-4334-2 (ebook); Most names and many identifying characteristics have been changed.; Interior design by Carly Loman; Jacket design by David L Itman To anyone who would rather be doing something useful with themselves. Preface: On the Phenomenon of Bullshit Jobs In the spring of 2013, I unwittingly set off a very minor international sensation. It all be
Hacking Google with A.I. for $500,000What happens when you unleash an AI across all of Google's infrastructure? 1,500 APIs, 3,600 keys, and $500,000 in bounties later, here's what I found. After being invited to bugSWAT Mexico in October 2025, I found myself drawn back to Google research. While I'd been focused on other projects for several months, the team's willingness to give researchers a peek
How fast is javascript? Simulating 20,000,000 particles The challenge, simulate 1,000,000 particles in plain javascript at 60 fps on a phone using only the cpu. Let's go. Ok, this is not a particularly difficult challenge if you did all the work on a gpu but the rule of the challenge is to use the CPU only or as much as possible and to stay in js land so no wasm. I know what you are thinking. This
TanStack npm Packages Compromised in Ongoing Mini Shai-Hulud...
The Socket Threat Research team detected a compromise across 84 npm package artifacts in the tanstack namespace. Affected packages were modified to add a suspected credential stealer targeting various CI systems, including Github Actions. All packages were flagged by Socket AI Scanner in six minutes or less after publication. Several of the newly turned malicious packages, like pkg:npm/@tanstack/r
Arquero
Arquero Arquero is a JavaScript library for query processing and transformation of array-backed data tables. Following the relational algebra and inspired by the design of dplyr, Arquero provides a fluent API for manipulating column-oriented data frames. Arquero supports a range of data transformation tasks, including filter, sample, aggregation, window, join, and reshaping operations. Fast: proce
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Claude Code の Dynamic Workflow を試してみた
Announcing TypeScript 5.0 - TypeScript
Generative UI のためのフレームワーク OpenUI
JavaScriptのユニットテストを始めよう - ユニットテストのメリットと書き方のコツ - ICS MEDIA
Announcing TypeScript 4.7 - TypeScript
Announcing TypeScript 4.7 Beta - TypeScript
Announcing TypeScript 4.7 RC - TypeScript
Announcing TypeScript 5.0 RC - TypeScript
MAI-Thinking-1: Building a Hill-Climbing Machine
October 2024 (version 1.95)
prompts.chat - AI Prompts Community
Unicode is harder than you think · mcilloni's blog
September 2022 (version 1.72)
Large Text Compression Benchmark
イミュータブルにデータを扱うライブラリと Stage 2 Record & Tuple（廃止）
Hacking Google with A.I. for $500,000
How fast is javascript? Simulating 20,000,000 particles