ジャンプTOON Next.js App Router の活用〜得られた恩恵と課題〜 | CyberAgent Developers Blog
目次 はじめに Colocation を意識した設計方針 Parallel Routes と Intercepting Routes を用いた設計パターン サーバー側に処理を寄せたことによる恩恵と課題 Next.js が抱える課題 おわりに 参考文献 はじめに ジャンプTOON のWeb版（以降、ジャンプTOON Web）の開発を担当している浅原昌大（@assa1605）です。 5 月にサービスを開始した「ジャンプTOON」は、オリジナル縦読みマンガ作品や人気作品のタテカラー版を連載する、ジャンプグループ発の新サービスです。 ジャンプTOON のフロントエンドには、Next.js を採用し開発をしています。 本記事では、Next.js の最新機能や設計パターン、Next.js を採用した恩恵と現在の課題について紹介します。 Colocation を意識した設計方針 Parallel Rou
Developers are increasingly relying on AI coding assistants to accelerate our daily workflows. These tools can autocomplete functions, suggest bug fixes, and even generate entire modules or MVPs. Yet, as many of us have learned, the quality of the AI’s output depends largely on the quality of the prompt you provide. In other words, prompt engineering has become an essential skill. A poorly phrased
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How modern browsers work
Note: For those eager to dive deep into how browsers work, an excellent resource is Browser Engineering by Pavel Panchekha and Chris Harrelson (available at browser.engineering). Please do check it out. This article is an overview of how browsers work. Web developers often treat the browser as a black box that magically transforms HTML, CSS, and JavaScript into interactive web applications. In tru
One of the most impactful things we’ve worked on in TypeScript 5.0 isn’t a feature, a bug fix, or a data structure optimization. Instead, it’s an infrastructure change. In TypeScript 5.0, we restructured our entire codebase to use ECMAScript modules, and switched to a newer emit target. What to Know Now, before we dive in, we want to set expectations. It’s good to know what this does and doesn’t m
Programming is an iterative process. As much as we would like to come up with the perfect solution from the start, it rarely works that way. Good programs often begin as quick prototypes. While many experiments remain prototypes, the best programs can evolve into production code. Whether you’re writing games, CLI tools, or designing library APIs, prototyping helps tremendously in finding the best
Go's infamous error handling has caught quite the attention from outsiders to the programming language, often touted as one of the language's most questionable design decisions. If you look into any project on Github written in Go, it's almost a guarantee you'll see the lines more frequently than anything else in the codebase: if err != nil { return err } Although it may seem redundant and unneces
All JavaScript and TypeScript Features of the last 3 years
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Update 1.69.1: The update addresses these issues. Update 1.69.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the June 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: 3-way merge editor - Resolve merge conflicts wit
Debugging in CSS means figuring out what might be the problem when you have unexpected layout results. Today, Stephanie Eckles will look at a few categories bugs often fit into, see how you can evaluate the situation, and explore techniques that help prevent these bugs. We’ve all been there, at the end of completing CSS for a layout and — what’s that? Ah! An extra scrollbar! Or maybe an element is
AST vs. Bytecode: Interpreters in the Age of Meta-Compilation
233 AST vs. Bytecode: Interpreters in the Age of Meta-Compilation OCTAVE LAROSE, University of Kent, UK SOPHIE KALEBA, University of Kent, UK HUMPHREY BURCHELL, University of Kent, UK STEFAN MARR, University of Kent, UK Thanks to partial evaluation and meta-tracing, it became practical to build language implementations that reach state-of-the-art peak performance by implementing only an interprete
WebKit Features in Safari 18.0
ContentsNew in Safari 18Web apps for MacCSSSpatial WebHTMLJavaScriptWeb APICanvasManaged Media SourceWebRTCHTTPSWebGLWeb InspectorPasskeysSafari ExtensionsApple PayDeprecationsBug Fixes and moreUpdating to Safari 18.0Feedback Safari 18.0 is here. Along with iOS 18, iPadOS 18, macOS Sequoia and visionOS 2, today is the day another 53 web platform features, as well as 25 deprecations and 209 resolve
Today we’re excited to announce the release of TypeScript 5.4! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null and undefined, and more. Types also power TypeScript’s edi
Today we’re announcing the availability of TypeScript 4.6. 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 to check
A Walk with LuaJIT
The following is a chronicle of implementing a general purpose zero-instrumentation BPF based profiler for LuaJIT. Some assumptions are made about what this entails and it may be helpful to read some of our other work in this area. One major change from prior efforts is that instead of working with the original Parca unwinder we are now working with the OpenTelemetry eBPF profiler. If you missed t
14 Linting Rules To Help You Write Asynchronous Code in JavaScript
Debugging asynchronous code in JavaScript can feel like navigating a minefield at times. You don't know when and where the console.logs will print out, and you have no idea how your code is executed. It's hard to correctly structure async code so it executes in the right order as you intend it to. Wouldn't it be nice if you had some guidance while writing asynchronous code, and to get a helpful me
Wasm core dumps and debugging Rust in Cloudflare Workers
Wasm core dumps and debugging Rust in Cloudflare Workers2023-08-14 A clear sign of maturing for any new programming language or environment is how easy and efficient debugging them is. Programming, like any other complex task, involves various challenges and potential pitfalls. Logic errors, off-by-ones, null pointer dereferences, and memory leaks are some examples of things that can make software
Jun 9, 2025 by Jen Simmons, Saron Yitbarek, Jon Davis, Richard Robinson, Eddy Wong, Brandel Zachernuk, Marcos Cáceres, Tim Nguyen, Daniel Liu, Razvan Caliman, Blaze Burg, Qianlang Chen, Brian Weinstein, Aditya Keerthi, Karl Dubost, David Johnson, Luming Yin ContentsSVG IconsEvery site can be a web app on iOS and iPadOSHDR ImagesWebKit in SwiftUI<model> on visionOSImmersive video and audio on visio
The Grug Brained Developer
The Grug Brained Developer A layman's guide to thinking like the self-aware smol brained Introduction this collection of thoughts on software development gathered by grug brain developer grug brain developer not so smart, but grug brain developer program many long year and learn some things although mostly still confused grug brain developer try collect learns into small, easily digestible and fun
What I learned working with a senior engineer as a new grad: TK's website
A summary of what I learned about software development working with a senior software engineer with far more experience than me. Over the past few months, I've been working on a new project with Chet Corcos, the first engineering hire at Notion. Chet has been a professional engineer for 6 years and helped build Notion from the ground up. For contrast, I graduated from school in May 2021. I've been
Jun 10, 2024 by Jen Simmons, Jon Davis, Karl Dubost, Anne van Kesteren, Marcos Cáceres, Ada Rose Canon, Tim Nguyen, Sanjana Aithal, Pascoe, and Garrett Davidson ContentsWebXRCSSWeb apps for MacSafari ExtensionsSpatial mediaHTMLMediaWebRTCPasskeysHTTPSJavaScriptWeb APICanvasWebGLWeb InspectorWKWebViewApple PayDeprecationsBug Fixes and moreHelp us Beta TestFeedback The last year has been a great one
WebKit Features in Safari 18.4
Mar 31, 2025 by Jen Simmons, Saron Yitbarek, Jon Davis, Razvan Caliman, Karl Dubost, Brady Eidson, Elika Etemad, Youenn Fablet, Matthew Finkel, Simon Fraser, Timothy Hatcher, David Johnson, Anne van Kesteren, Daniel Liu, Keith Miller, Rupin Mittal, Tim Nguyen, Pascoe, Abrar Rahman Protyasha, Richard Robinson, Lily Spiniolas, Brandon Stewart, John Wilander and Luming Yin ContentsDeclarative Web Pus
Summary Introduce virtual threads to the Java Platform. Virtual threads are lightweight threads that dramatically reduce the effort of writing, maintaining, and observing high-throughput concurrent applications. This is a preview API. Goals Enable server applications written in the simple thread-per-request style to scale with near-optimal hardware utilization. Enable existing code that uses the j
--- 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
WebKit Features for Safari 26.2
Safari 26.2 is a big release. Packed with 62 new features, this release aims to make your life as a web developer easier by replacing long-standing frustrations with elegant solutions. You’ll find simpler ways to create common UI patterns with just a few lines of HTML or CSS, and no JavaScript — like auto-growing text fields with CSS field-sizing, and buttons that open/close dialogs and popovers w
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.57.1: The update addresses these issues. The Workspace Trust feature addresses CVE-2021-34529. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the May 2021 release of Visual Studio Code. There are a number of updates in this version that we ho
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
What's new in Swift 5.5? Async/await, actors, throwing properties, and more! Swift 5.5 comes with a massive set of improvements – async/await, actors, throwing properties, and many more. For the first time it’s probably easier to ask “what isn’t new in Swift 5.5” because so much is changing. In this article I’m going to walk through each of the changes with code samples, so you can see how each of
React Best Practices – Tips for Writing Better React Code
By Jean-Marc Möckel Two years ago, I started to learn and use React. And today I'm still using it at my day job as a Software Developer and in my own side projects. During that time I've come across a lot of "typical" issues. So I searched around and found some best practices that I've integrated into my workflow, and I've come up with things that have made my life or my team members' lives easier
WebKit Features in Safari 26.0
Sep 15, 2025 by Jen Simmons, Saron Yitbarek, Jon Davis, Tim Nguyen, Blaze Burg, Marcos Cáceres, Razvan Caliman, Qianlang Chen, Karl Dubost, Kiet Ho, David Johnson, Aditya Keerthi, Daniel Liu, Keith Miller, Abrar Rahman Protyasha, Richard Robinson, Kiara Rose, Ahmad Saleem, Anne van Kesteren, Brian Weinstein, Eddy Wong, Luming Yin, Brandel Zachernuk ContentsCSSEvery site can be a web app on iOS and
The Wado Programming Language
Wado takes a different approach. By targeting Wasm GC, the garbage collector is provided by the host runtime itself — so it doesn't have to ship inside the module. The output is a thin shell of pure logic. The timing matters too. With the Wasm Component Model and WASI P3 maturing, Wado is designed for this new era from the ground up — no legacy baggage, no retrofitting. A Real Example: an HTTP Ser
OAuth 2.0 Simplified | What is Oauth and How Does it Work | FusionAuth | FusionAuth Docs
OAuth 2.0 Simplified | What is Oauth and How Does it Work | FusionAuthBy Brian Pontarelli, Ahmed Hashesh and Dan Moore I know what you are thinking, is this really another guide to OAuth 2.0? Well, yes and no. This guide is different from most of the others out there because it covers all of the ways that we actually use OAuth. It also covers all of the details you need to be an OAuth expert witho
Cleaner JavaScript promises with safe-awaitPublished on 22 May 2024Nested try/catch blocks are a common pattern in JavaScript when working with promises. However, they often lead to hard-to-read and maintain code. To better understand the problem, let's look at an example where we have a series of promises, each relying on the result of the previous one (or if you just want to skip to the solution
In the previous post, I covered how I reimplemented JSON::Generator::State#configure in Ruby and some other changes. Unfortunately, it didn’t go as well as I initially thought. Mistakes Were Made The default gems that ship with Ruby are automatically copied inside ruby/ruby’s repo. In short, there’s a bot aptly named matzbot, that replicates all the commits from the various ruby/* gems, inside rub
Django for Startup Founders: A better software architecture for SaaS startups and consumer apps
In an ideal world, startups would be easy. We'd run our idea by some potential customers, build the product, and then immediately ride that sweet exponential growth curve off into early retirement. Of course it doesn't actually work like that. Not even a little. In real life, even startups that go on to become billion-dollar companies typically go through phases like: Having little or no growth fo
Photo by Birmingham Museums Trust on UnsplashA few years ago, I read The Toyota Way, driven by my curiosity about the origins of Agile software development. However, I became even more intrigued by Toyota’s manufacturing processes and their efficiency improvements. The book offered many valuable insights and practices to adopt. As a developer, the 5S principle particularly caught my attention. I b
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