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
An introduction to WebAssembly for JavaScript Developers
If you transmit a number whereas an integer encoded on 64 bits is expected you will get an exception: let run = async () => { try { let bytecode = await fetch("add/add.wasm"); let wasm = await WebAssembly.instantiateStreaming(bytecode); console.log(wasm.instance.exports.addInt64(1,2)); } catch(e) { console.error(e); } }; > run().then(); TypeError: wasm function signature contains illegal type Call
Today, we are excited to announce the launch of .NET 10, the most productive, modern, secure, intelligent, and performant release of .NET yet. It’s the result of another year of effort from thousands of developers around the world. This release includes thousands of performance, security, and functional improvements across the entire .NET stack-from languages and developer tools to workloads-enabl
Turing Machines
ALAN M. TURING 23 June 1912 – 7 June 1954 F | | P(T) R P(u) R P(r) R P(i) R P(n) R P(g) R P( ) R P(M) R P(a) R P(c) R P(h) R P(i) R P(n) R P(e) R P(s) R -> B B | | L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) L P( ) -> F 2024-12-20 Translations: English, Spanish In 1928, David Hilbert, one of the most influential mathematicians of his time, aske
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’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
Since I wrote about async Ruby and patched Solid Queue to support fibers, people keep asking the same questions. What happens when a fiber blocks? Don’t you still need threads? What about database transactions? What about Ractors? This post answers all of it. From the ground up. The four primitives Ruby gives you four concurrency primitives: processes, threads, fibers, and Ractors. They nest. Ever
WebKit Features in Safari 17.0
Sep 18, 2023 by Jen Simmons and the Safari / WebKit Team Today’s the day for Safari 17.0. It’s now available for iOS 17 and iPadOS 17. [Update September 26th] And now, Safari 17.0 is available for macOS Ventura, and macOS Monterey, and macOS Sonoma. Safari 17.0 is also available in the vision OS Simulator, where you can test your website by downloading the latest beta of Xcode 15, which supports t
Show navigation Writing a high-performance JavaScript engine takes more than just having a highly optimising compiler like TurboFan. Particularly for short-lived sessions, like loading websites or command line tools, there’s a lot of work that happens before the optimising compiler even has a chance to start optimising, let alone having time to generate the optimised code. This is the reason why,
Today we are excited to announce the availability of TypeScript 4.9! If you’re not familiar with TypeScript, it’s a language that builds on JavaScript by adding types and type-checking. Types can describe things like the shapes of our objects, how functions can be called, and whether a property can be null or undefined. TypeScript can check these types to make sure we’re not making mistakes in our
On January 14, 2006, John Resig introduced a JavaScript library called jQuery at BarCamp in New York City. Now, 20 years later, the jQuery team is happy to announce the final release of jQuery 4.0.0. After a long development cycle and several pre-releases, jQuery 4.0.0 brings many improvements and modernizations. It is the first major version release in almost 10 years and includes some breaking c
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
Weird Lexical Syntax
I just learned 42 programming languages this month to build a new syntax highlighter for llamafile. I feel like I'm up to my eyeballs in programming languages right now. Now that it's halloween, I thought I'd share some of the spookiest most surprising syntax I've seen. The languages I decided to support are Ada, Assembly, BASIC, C, C#, C++, COBOL, CSS, D, FORTH, FORTRAN, Go, Haskell, HTML, Java,
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
Announcing Dart 3
Hello from Google I/O 2023. Today, live from Mountain View, we’re announcing Dart 3 — the largest Dart release to date! Dart 3 contains three major advancements. First, we’ve completed the journey to 100% sound null safety. Second, we’ve added major new language features for records, patterns, and class modifiers. Third, we’re giving a preview of the future, where we broaden our platform support w
Syntax Highlighting in Hand-Coded Websites The problem I have been trying to identify practical reasons why hand-coding websites with HTML and CSS is so hard (by hand-coding, I mean not relying on frameworks, generators or 3rd party scripts that modify the DOM). Let's say, I want to make a blog. What are the actual things that prevent me from making—and maintaining—it by hand? What would it take t
Parsing SQL - Strumenta
The code for this tutorial is on GitHub: parsing-sql SQL is a language to handle data in a relational database. If you worked with data you have probably worked with SQL. In this article we will talk about parsing SQL. It is in the same league of HTML: maybe you never learned it formally but you kind of know how to use it. That is great because if you know SQL, you know how to handle data. However
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
Rosetta 2 is remarkably fast when compared to other x86-on-ARM emulators. I’ve spent a little time looking at how it works, out of idle curiosity, and found it to be quite unusual, so I figured I’d put together my notes. My understanding is a bit rough, and is mostly based on reading the ahead-of-time translated code, and making inferences about the runtime from that. Let me know if you have any c
Jun 6, 2023 by Patrick Angle, Jean-Yves Avenard, Marcos Caceres, Ada Rose Cannon, Eric Carlson, Garrett Davidson, Jon Davis, Karl Dubost, Brady Eidson, Matthew Finkel, Simon Fraser, Brent Fulgham, Rachel Ginsberg, David Johnson, Anne van Kesteren, Mark Lam, Sihui Liu, Justin Michaud, Jer Noble, Tim Nguyen, Ben Nham, Richard Robinson, Michael Saboff, Alexey Shvaika, Jen Simmons, Sam Sneddon, Brando
rollup.js と TypeScript を使って npm 公開用のライブラリを作ろうとしたら、 Rollup の公式プラグインがRollup Pluginsに移動していて、 ビルド環境構築に苦労したので、雑にメモを残しておきます。 作るもの ✍ npm で公開するためのライブラリを作成する環境 モジュールバンドラに rollup.js を利用する TypeScript を使って開発する 他の npm のモジュール(CommonJS も含む)も利用できる 作成したライブラリは、汎用的に使えるようにする CommonJS、ESModule で利用できる CDN 経由でブラウザで利用できる (buble でトランスパイルし、IE でも動くように 😇) babel を利用して ES2015 まで構文変換は行うが、pollifill は利用者側に委ねる ライブラリが個々に pollifill
Today we’re excited to announce our Release Candidate (RC) of TypeScript 4.9. Between now and the stable release of TypeScript 4.9, 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 -D typescript@rc You can also get editor support by Downloading for Visual Studio 2022/2019 Follow
日本語で記述できるプログラミング言語「お抹茶」を作りながら学ぶインタプリタの仕組み - カミナシ エンジニアブログ
アイキャッチ画像 「日本語で記述できるプログラミング言語「お抹茶」を作りながら学ぶインタプリタの仕組み」 はじめに プログラミング言語って自分で作れるの？と思っていた僕ですが、実はインタプリタ型の簡単な言語なら意外と作れることがわかりました。 今回は「お抹茶」という日本語で書けるプログラミング言語を作ってみたので、その実装方法を紹介します。 インタプリタ言語を作るのに必要な3つの要素 プログラミング言語を作るというと難しそうですが、実は基本的な仕組みは意外とシンプルです。インタプリタ型言語を作るには、以下の3つの要素が必要になります。 1. トークナイザー（字句解析器） ソースコードを「トークン」と呼ばれる最小単位に分解する部分です。例えば 定義 x = 10 というコードを ["定義", "x", "=", "10"] のような配列に変換します。人間が読む文章を単語単位に区切るようなイメ
Introduction to Go 1.19 The latest Go release, version 1.19, arrives five months after Go 1.18. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language There is only one small change to the language, a
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
GitHub - endojs/Jessie: Tiny subset of JavaScript for ocap-safe universal mobile code
This document is an early draft. Comments appreciated! Thanks. Today, JavaScript is the pervasive representation for (somewhat) safe mobile code. For another representation to achieve universality quickly, it must be a subset of JavaScript, and so runs at least everywhere JavaScript runs. Whereas JSON is a simple universal representation for safe mobile data, Jessie is a simple universal represent
Editor’s note: This guide to React design patterns was last reviewed for accuracy by Isaac Okoro on 12 April 2024. The article was also updated to add four more design patterns, covering prop combination, controlled components, forwardRefs, and conditional rendering. It was previously updated to include information about the render props pattern and state reducer pattern. Check out this article fo
はじめに はじめまして。Fixel で開発に携わっているフリーランス Web エンジニアの佐藤（@thesugar）と申します。 現在私は、デザインシステムの作成と共有を簡単に行えるプラットフォーム UXHub の開発を担当しています。数ヶ月前に UXHub 開発に参画したのですが、そのときまずはじめに、フロントエンドコードの全面 TypeScript 化や、React のクラスコンポーネントから React Hooks + 関数コンポーネントへの書き換えといったリファクタリングを提案しました。新機能の追加ではなくすでに動いているコードの書き換えですから、その提案が受け入れられるかどうかは未知数だったのですが、将来の開発効率は確実に向上するだろうから是非やろうということになり、エンジニアチームで一致団結し一ヶ月ちょっと掛けて取り組みました。 このように、Fixel にはコードの品質や技術的
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
Computers aren’t random. On the contrary, hardware designers work very hard to make sure computers run every program the same way every time. So when a program does need random numbers, that requires extra effort. Traditionally, computer scientists and programming languages have distinguished between two different kinds of random numbers: statistical and cryptographic randomness. In Go, those are
Exploring biphasic programming: a new approach in language design
I’ve noticed a small but interesting trend in the programming languages space. I’m not sure how novel it is, but this pattern, which I’ll refer to as “biphasic programming,” is characterized by languages and frameworks that enable identical syntax to express computations executed in two distinct phases or environments while maintaining consistent behavior (i.e., semantics) across phases. These pha
Improved local development with wrangler and workerd2023-05-17 For over a year now, we’ve been working to improve the Workers local development experience. Our goal has been to improve parity between users' local and production environments. This is important because it provides developers with a fully-controllable and easy-to-debug local testing environment, which leads to increased developer eff
“CSS Carousels” were formally introduced a few weeks ago in an article on the Chrome for developers blog, and quite a few people have shared the excitement since then. When I first heard of them I was very reluctant to jump on the bandwagon of excitement. I will also admit that there was even a small part inside of me that was terrified by the idea. Not only does creating interactive widgets using
research!rsc: Programming Language Memory Models (Memory Models, Part 2)
Programming language memory models answer the question of what behaviors parallel programs can rely on to share memory between their threads. For example, consider this program in a C-like language, where both x and done start out zeroed. // Thread 1 // Thread 2 x = 1; while(done == 0) { /* loop */ } done = 1; print(x); The program attempts to send a message in x from thread 1 to thread 2, using d
Introduction to Go 1.19 The latest Go release, version 1.19, arrives five months after Go 1.18. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language There is only one small change to the language, a
Deconstructing prompt-based meta-tool architecture and context injection patterns for AI engineering - Claude’s Agent Skills system represents a sophisticated prompt-based meta-tool architecture that extends LLM capabilities through specialized instruction injection. Unlike traditional function calling or code execution, skills operate through prompt expansion and context modification to modify ho
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
Faster virtual machines: Speeding up programming language execution - Mort's Ramblings
Date: 2023-01-15 Git: https://gitlab.com/mort96/blog/blob/published/content/00000-home/00015-fast-interpreters.md In this post, I hope to explore how interpreters are often implemented, what a "virtual machine" means in this context, and how to make them faster. Note: This post will contain a lot of C source code. Most of it is fairly simple C which should be easy to follow, but some familiarity w
Introduction to Go 1.22 The latest Go release, version 1.22, arrives six months after Go 1.21. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language Go 1.22 makes two changes to “for” loops. Previous
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Announcing TypeScript 5.0 - TypeScript
Announcing .NET 10 - .NET Blog
Announcing TypeScript 4.7 - TypeScript
Announcing TypeScript 5.0 Beta - TypeScript
Ruby Concurrency: What Actually Happens
Sparkplug — a non-optimizing JavaScript compiler · V8
Announcing TypeScript 4.9 - TypeScript
jQuery 4.0.0 | Official jQuery Blog
Font with Built-In Syntax Highlighting
Announcing TypeScript 4.7 RC - TypeScript
Announcing TypeScript 5.0 RC - TypeScript
Why is Rosetta 2 fast?
News from WWDC23: WebKit Features in Safari 17 beta
rollup.js × TypeScriptのライブラリをnpm公開する環境の構築（2020年12月版）
Announcing TypeScript 4.9 RC - TypeScript
Go 1.19 Release Notes - The Go Programming Language
A guide to React design patterns - LogRocket Blog
JavaScriptで覗き見る関数型プログラミングの世界｜F Lab｜Fixel株式会社
Secure Randomness in Go 1.22 - The Go Programming Language
Improved local development with wrangler and workerd
Are 'CSS Carousels' accessible?
Go 1.19 Release Notes - The Go Programming Language
Claude Agent Skills: A First Principles Deep Dive
May 2021 (version 1.57)
Go 1.22 Release Notes - The Go Programming Language