// Good: choose between two options as appropriate (see below). import * as ng from '@angular/core'; import {Foo} from './foo'; // Only when needed: default imports. import Button from 'Button'; // Sometimes needed to import libraries for their side effects: import 'jasmine'; import '@polymer/paper-button'; Import paths TypeScript code must use paths to import other TypeScript code. Paths may be r
Pretty Print Raw files are usually minified, and therefore hard to read. Use the Pretty Print option to format it In the background, Chrome is creating a new file (names filename.js:formatted), closing that file will undo the formatting. If doing this each time is getting boring, then there's an experimental setting to auto-enable pretty print for all sources. Under ⋮ → Settings → Experiments Sele
パイプライン指向JSON処理プログラミング言語 jq - 檜山正幸のキマイラ飼育記 (はてなBlog)
jq（https://stedolan.github.io/jq/）の紹介では、「JSON処理のワンライナー〈一行野郎〉としてめちゃくちゃ便利！」とアピールするのが定番です。もちろんそれは本当で、「めちゃくちゃ便利！」です。が、実は jq は、ワンライナー記述にとどまらない、かなり本格的なプログラミング言語です。 JSON処理のためのDSL〈Domain Specific Language | 領域特化言語〉なので、汎用言語ではありません。しかし、汎用言語が備えている言語機能の一部（関数定義、モジュールシステムなど）を jq も持っています。また jq は、独特で楽しいプログラミング・パラダイム -- “パイプライン指向”に基づいて設計されています。 この記事では、ワンライナーを超えた jq の使い方と、プログラミング言語としての jq の特徴を紹介します。長い記事になってしまったので、一
How I built a modern website in 2021September 29th, 2021 — 34 min read For over half of 2021, I worked on a complete rewrite of kentcdodds.com. You're reading this on the rewrite of this site! Are you using dark mode or light mode? Have you signed in and selected your team yet? Have you tried to call into the Call Kent Podcast? This blog post isn't about these and other features of the new site, b
ブラウザで動作する地理空間データ処理ライブラリとして DuckDB-wasm を使い、 SQL を TypeScript で管理する仕組みを作る - newmo 技術ブログ
newmo では、地図データや地理情報を扱う場面が多くあります。 たとえば、タクシーやライドシェアでは、営業区域のような営業していいエリアといった地理的な定義があります。 また、乗り入れ禁止区域のようなタクシーが乗り入れてはいけないエリアといった定義も必要になります。 これらの地理に関する定義は GeoJSON のような地理情報を扱うデータ形式で管理されることが多いです。 しかし、GeoJSONなどの定義をテキストとして手書きするのは困難です。 そのため、地図上に区域を作図するエディタやその定義した区域が正しいかをチェックするような管理ツールが必要です。 管理ツールは、ウェブアプリケーションとして作った方が利用できる環境が広がります。 このような地理情報は一度に扱うデータが多かったり、空間的な計算処理が必要になるため、専用の仕組みを使うことが多いです。 このような技術を、地理情報システム（
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
【忙しい人のための】Next.js公式チュートリアルを完走してきたので記事１本で振り返る【ギュッと凝縮】 | DevelopersIO
本記事はNext.jsのチュートリアルが大きく変わったためリンク切れを起こしています。 技術メモのため記事としては残しますが、リンク切れにご留意ください。 また機会があれば新チュートリアルで記事を書こうと思いますm(_ _)m こんちには。 データアナリティクス事業本部 インテグレーション部 機械学習チームの中村です。 今回は以下のNext.jsのチュートリアルをほぼ一通り（SEOのところ以外）実施しましたので、ポイントを記事化しました。 https://nextjs.org/learn/foundations/about-nextjs" チュートリアル自体は、以下のような内容が分かるものとなっています。 CRA（create-react-app）のみ使用しているとイメージしづらい、素のHTML + JavaScriptとReactの関係のイメージが分かる Reactがフレームワークではな
ゼロアロケーションLINQライブラリ「ZLinq」のリリースとアーキテクチャ解説 2025-05-05 ZLinq v1を先月リリースしました！structとgenericsベースで構築することによりゼロアロケーションを達成しています。またLINQ to Span, LINQ to SIMD, LINQ to Tree(FileSystem, JSON, GameObject, etc.)といった拡張要素と、任意の型のDrop-in replacement Source Generator。そして.NET Standard 2.0, Unity, Godotなどの多くのプラットフォームサポートまで含めた大型のライブラリとなっています！現在GitHub Starsも2000を超えました。 https://github.com/Cysharp/ZLinq structベースのLINQそのものは
LINE株式会社は、2023年10月1日にLINEヤフー株式会社になりました。LINEヤフー株式会社の新しいブログはこちらです。 LINEヤフー Tech Blog この記事は UIT 新春 Tech blog 3日目の記事です。 こんにちは。LINE証券のフロントエンドを開発している岩本海童です。 今日は、業務で利用できる便利なVS Codeの機能拡張を作ってみた話をします。 背景 LINEでは、XLTと呼ばれるアプリケーションの多言語化のための社内ツールがあります。 あるキーとなる文字列に対して、対応する日本語や英語の文字列を関連づけることができ、それをソースコードから参照します。 例えば次のように、ボタンにXLTから設定した文字列を表示します。 export const ShowAllAssetsButton: FC = () => <button>{xlt('portofolio.
TypeScript をより安全に使うために その 1: オブジェクトの mutable な操作を避ける - Object.create(null)
ふだん TypeScript のコードレビュー時に参考に貼ったりしている内部ドキュメントがあるのですが, 内部では何かと人目につきにくいので, 内容を整えて公開していきます. TypeScript の型システムは安全ではありません. つまり型検査を通過したコードであっても, 実行時にエラーが発生する可能性があります. TypeScript の設計についてのドキュメントにおいても, non-goals の一つとして Apply a sound or "provably correct" type system. Instead, strike a balance between correctness and productivity. が挙げられており, 完全に安全なものを目指すのではなく, 安全性と利便性とのバランスをとるものとされています. かといって TypeScript を使うなら
WebKit Features in Safari 16.4
Mar 27, 2023 by Patrick Angle, Marcos Caceres, Razvan Caliman, Jon Davis, Brady Eidson, Timothy Hatcher, Ryosuke Niwa, and Jen Simmons ContentsWeb Push on iOS and iPadOSImprovements for Web AppsWeb ComponentsCSSHTMLJavaScript and WebAssemblyWeb APIImages, Video, and AudioWKWebViewDeveloper ToolingWeb InspectorSafari Web ExtensionsSafari Content BlockersNew Restrictions in Lockdown ModeMore Improve
Next.js 13 vs Remix: An In-depth case studyLast updated on 29 Sep 2023 by Prateek Surana • - min read When it comes to building web applications, React has been at the forefront for a while now, and its adoption continues to grow. Among the most common approaches to building web applications with React, Next.js stands out as one of the most preferred options. Next.js has also been in the limel
PacketProxyで探るGemini CLIのコンテキストエンジニアリング 〜AIエージェントを信頼できる相棒に〜 | BLOG - DeNA Engineering
2025.07.18 技術記事 PacketProxyで探るGemini CLIのコンテキストエンジニアリング 〜AIエージェントを信頼できる相棒に〜 by akira.kuroiwa #gemini-cli #ai #security #aiエージェント #コンテキストエンジニアリング #packetproxy 「なんかよく分からないけど、すごい」で終わらせないために こんにちは、DeNA セキュリティ技術グループの 黒岩 亮 ( @kakira9618 ) です。 AIエージェント、とくに Gemini CLI のようなコーディングを支援してくれるツールは非常に強力で、私たちの開発体験を大きく変えようとしています。しかし、その一方で、こんな風に感じたことはありませんか？ 「このファイルの情報、勝手にAIに送られたりしない？ 大丈夫かな？」 と、情報管理・セキュリティ面で漠然とした不安を
What is TypeScriptTypeScript is a popular JavaScript superset created by Microsoft that brings a type system on top of all the flexibility and dynamic programming capabilities of JavaScript. The language has been built as an open-source project, licensed under the Apache License 2.0, has a very active and vibrant community, and has taken off significantly since its original inception. Installing T
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
Today we’re excited to announce our beta 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, functionality to better support ESM projects in Node and bundlers, new ways for library authors to control generic inference, expanded our JSDoc functionality, simplified configuratio
Object Structure in JavaScript EnginesFrom a developer's perspective, objects in JavaScript are quite flexible and understandable. We can add, remove, and modify object properties on our own. However, few people think about how objects are stored in memory and processed by JS engines. Can a developer's actions, directly or indirectly, impact performance and memory consumption? Let's try to delve i
All JavaScript and TypeScript Features of the last 3 years
TypeScript as envisioned by Stable DiffusionThis article goes through almost all of the changes of the last 3 years (and some from earlier) in JavaScript / ECMAScript and TypeScript . Not all of the following features will be relevant to you or even practical, but they should instead serve to show what’s possible and to deepen your understanding of these languages. There are a lot of TypeScript fe
WebKit Features in Safari 17.4
ContentsArchitectural improvementsWeb AppsForm elementsCSSWeb APIJavaScriptMediaSVGWebGLWeb AssemblyWeb InspectorChanges to SafariSafari ExtensionsWeb AuthenticationBug Fixes and moreUpdating to Safari 17.4Feedback Just like Safari 15.4 and Safari 16.4, this March’s release of Safari 17.4 is a significant one for web developers. We’re proud to announce another 46 features and 146 bug fixes. You ca
Golang Mini Reference 2022: A Quick Guide to the Modern Go Programming Language (REVIEW COPY)
Golang Mini Reference 2022 A Quick Guide to the Modern Go Programming Language (REVIEW COPY) Harry Yoon Version 0.9.0, 2022-08-24 REVIEW COPY This is review copy, not to be shared or distributed to others. Please forward any feedback or comments to the author. • feedback@codingbookspress.com The book is tentatively scheduled to be published on September 14th, 2022. We hope that when the release da
The product https://joinmastodon.org Mastodon is a free, open-source social network server based on ActivityPub where users can follow friends and discover new ones. On Mastodon, users can publish anything they want: links, pictures, text, and video. All Mastodon servers are interoperable as a federated network. Open source The project is open source at https://github.com/mastodon/mastodon License
Highlights This is a summary of the significant changes, both breaking and non-breaking, you need to know about when upgrading from ESLint v8.x to ESLint v9.0.0. Installing Because this is a major release, you may not automatically be upgraded by npm. To ensure you are using this version, run: npm i eslint@9.0.0 --save-dev Copy code to clipboard Migration Guide As there are a lot of changes, we’ve
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 the release of TypeScript 5.5! 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 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
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.54.1: The update addresses an issue with an extension dependency. Update 1.54.2: The update addresses these issues. Update 1.54.3: The update addresses this issue. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the February 2021 release of Vi
2025-05-06, Version 24.0.0 (Current), @RafaelGSS and @juanarbol We’re excited to announce the release of Node.js 24! This release brings several significant updates, including the upgrade of the V8 JavaScript engine to version 13.6 and npm to version 11. Starting with Node.js 24, support for MSVC has been removed, and ClangCL is now required to compile Node.js on Windows. The AsyncLocalStorage API
Toggle dark mode I may be late to the party, but LangGraph lets you build complex workflow architectures and codify them as powerful automations. Also LLMs, if you want. But you don’t have to! LLM Architecture I always liked the idea of “flow-based” programming. PureData, DaVinci Resolve, Node Red... they all appeal to me. I also always liked the idea of running LLMs locally, rather than spending
Get affordable and hassle-free WordPress hosting plans with Cloudways — start your free trial today. So, you have been working on this new and fancy web application. Be it a recipe app, a document manager, or even your private cloud, you‘ve now reached the point of working with users and permissions. Take the document manager as an example: you don’t just want admins; maybe you want to invite gues
Release date: May 8, 2025 Update: Enable Next Edit Suggestions (NES) by default in VS Code Stable (more...). Update 1.100.1: The update addresses these security issues. Update 1.100.2: The update addresses these issues. Update 1.100.3: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the April 2025 release
When a single-page application needs to fetch data from a remote source, it needs to do so while remaining responsive and providing feedback to the user during an often slow query. Five patterns help with this. Asynchronous State Handler wraps these queries with meta-queries for the state of the query. Parallel Data Fetching minimizes wait time. Fallback Markup specifies fallback displays in marku
New JavaScript Set methods are arriving! Since Firefox 127, these methods are available in most major browser engines, which means you won't need a polyfill to make them work everywhere. This article is a good read for people who are new to Set in JavaScript and are looking to find out how to use these new JavaScript methods. I'll highlight some advantages of using these methods with basic example
The idea of state is one of the trickier things to nail down when you’re starting with React, and as your app grows, so do your state management needs. In this post I’ll give you the Grand Tour of state management options in React and help you decide which one to use in your project. What is State? Just so we’re on the same page, let’s talk about state for a second. Every interactive app involves
Today we are excited to announce the availability of TypeScript 5.5 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here’s a quick list of what’s new in TypeScript 5.5! Inferred Type Predicates Control Flow Narrowing for Constant Indexed Accesses Type Imports in JSDoc Regular Expression Syntax Checking Iso
Using Ultra, the new React web framework - LogRocket Blog
Table of Contents What is Ultra? Features of Ultra Ultra vs Aleph.js The drawbacks to using Ultra Getting started with Ultra Building components in Ultra Deploying an Ultra app In the world of frontend development, React is one of the most popular libraries for developing components for web applications. React v18 includes new features, such as concurrent rendering, and it supports SSR with React
WebKit Features in Safari 17.2
ContentsHTMLCSSImages and videoJavaScriptWeb APIWeb AppsWebGLPrivacyWeb InspectorFixes for Interop 2023 and moreUpdating to Safari 17.2Feedback Web technology is constantly moving forward, with both big new features and small subtle adjustments. Nowadays, web developers expect web browsers to update multiple times a year, instead of the once or twice a year typical of the late 2000s — or the once
【gRPC】Connect が作られた背景概要／これまでの gRPC-Web／Connect でできること - SYM's Tech Knowledge Index & Creation Records
【gRPC】Connect が作られた背景概要／これまでの gRPC-Web／Connect でできること はじめに 何故 Connect が作られたのか？ gRPC-Web とは proxy 層が必要な理由 gRPC-Web のソースを追う Envoy Proxy & gRPC-gateway 補足 Connect とは Connect-Web Connect-Web のソースを追う fetch api についての補足 Connect チュートリアル ＋ α connect-go (サーバサイド) 初期構築 コード生成 ルーティング ERROR Interceptors Streaming Client-Side Streaming RPC Server-Side Streaming RPC 補足 (HTTP Trailer について) connect-web (フロントエンド) 初期構
Today we are excited to announce the availability of the release candidate of TypeScript 5.5. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.5! Inferred Type Predicates Control Flow Narrowing for Constant Indexed Accesses Type Imports in JSDoc Regular Expression Syn
agent loop �� �p�� You are Manus, an AI agent created by the Manus team. You excel at the following tasks: 1. Information gathering, fact-checking, and documentation 2. Data processing, analysis, and visualization 3. Writing multi-chapter articles and in-depth research reports 4. Creating websites, applications, and tools 5. Using programming to solve various problems beyond development 6. Variou
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Google TypeScript Style Guide
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Announcing TypeScript 5.0 - TypeScript
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