GitHub - e18e/e18e
The e18e (Ecosystem Performance) project is an initiative to bring together the groups and individuals who are passionate about improving performance of the JavaScript ecosystem. Many ongoing efforts are already happening in this space, from dependency tree cleanups to performance optimizations, and much more. Our aim is to provide a space for contributions, ideas and knowledge sharing around the
New JavaScript Set methods | MDN Blog
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
Polyfill supply chain attack hits 100K+ sites
by Sansec Forensics Team Published in Threat Research − June 25, 2024 The new Chinese owner of the popular Polyfill JS project injects malware into more than 100 thousand sites. Update June 28th: We are flagging more domains that have been used by the same actor to spread malware since at least June 2023: bootcdn.net, bootcss.com, staticfile.net, staticfile.org, unionadjs.com, xhsbpza.com, union.m
State of JavaScript 2023
It should be clear by now that, for better or for worse, JavaScript is not slowing down. Between server components, server actions, signals, compilers, and more, we're seeing new innovations pop up faster than most of us can handle. The trick to avoiding the dreaded JavaScript fatigue is remembering that you can pick your lane: sure, you can live life on the cutting edge with the early adopters; b
Release Version 8.12.0 · acornjs/acorn
### New features Support ES2025 duplicate capture group names in regular expressions. ### Bug fixes Include `VariableDeclarator` in the `AnyNode` type so that walker objects can refer to it without getting a type error. Properly raise a parse error for invalid `for`/`of` statements using `async` as binding name. Properly recognize \"use strict\" when preceded by a string with an escaped newline. M
TypeScriptの型と値とバリデーション
TypeScript は本質的に自分に型が付与されていると思っているだけの JavaScript です。 いくら型を付与しようが、それが実行時に影響を与えることはありません。 コードレビューをしているとここを誤解している人が本当に多いです。何度も解説しているのですが、なかなか浸透しないので、TypeScript におけるバリデーションという視点で記事を書くことにしました。 あと TS でバリデータ使って色々作ろうとしている友人と、プログラミング始めたてで zod と openapi を使っいる友人がいたので、彼らが想定読者です。 型と値の名前空間 TypeScript 上での名前空間(スコープ)は2つに分類できます。 値: 実行時にランタイム上のメモリに存在するもの 型: 静的解析時にのみ参照可能なもの。コンパイル時に完全に消滅する。 TypeScript は基本的に JavaScript
Turborepo 2.0
Turborepo 2.0 improves the developer experience of JavaScript and TypeScript repositories, with features including: New terminal UI: Interactive tasks and clearer logs Watch Mode: Dependency-aware task watcher for any tooling in your repository All-new documentation: Core monorepo concepts, refreshed API reference, and ecosystem tooling guides Licensing and maintenance updates: Upgraded to MIT lic
Storybook 8.1
Storybook is the industry standard workshop for building, testing, and documenting UI components. Thousands of developers use it every day, including teams at BBC, Etsy, and Dropbox. Over the past year we’ve focused on quality of life maintenance work. This culminated in the March launch of Storybook 8.0, our most performant and stable release yet. Now in 8.x, we’re back on the hunt to improve you
GitHub - slevithan/regex: JS regexes + future. A template tag for readable, high-performance, native JS regexes with extended syntax, context-aware interpolation, and always-on best practices.
Regex+ (aka regex, based on its package and tag name) is a template tag that extends JavaScript regular expressions with key features that make regexes more powerful and dramatically more readable. It returns native RegExp instances that run with native performance, and can exceed the performance of regex literals you'd write yourself. It's also lightweight, supports all ES2025 regex features, has
Rspack
Announcing Rspack 0.7# May 28, 2024 Rspack v0.7 has been released! This is the last minor release before the Rspack v1.0. After this, the Rspack team will focus on the development of v1.0 and aim to launch the Rspack v1.0 alpha version soon. Notable changes in Rspack v0.7: Support for Lazy Compilation: Significantly improves the dev startup performance of large applications by compiling on demand.
Prettier 3.3: New Flow features and a lot of bug fixes · Prettier
This release includes support for new Flow features such as component and hook declarations. All of these features were implemented by the engineers on the Flow team, thank you. If you appreciate Prettier and would like to support our work, please consider sponsoring us directly via our OpenCollective or by sponsoring the projects we depend on, such as typescript-eslint, remark, and Babel. Thank y
A virtual DOM in 200 lines of JavaScript
In this post I’ll walk through the full implementation of a Virtual DOM in a bit over 200 lines of JavaScript. The result is a full-featured and sufficiently performant virtual DOM library (demos). It’s available on NPM as the smvc package. The main goal is to illustrate the fundamental technique behind tools like React. React, Vue and the Elm language all simplify the creation of interactive web
Release @ark-ui/react@3.0.0 · chakra-ui/ark
Highlights The 3.0 release brings significant enhancements and some breaking changes for a more streamlined and flexible API. Key updates include new components and types, improved form integration, and forward compatibility with React 19. Here are some of the highlights: Added Context Components: Introduced the Context component for easier access to internal machine APIs, improving component comp
CVE-2024-4367 - Arbitrary JavaScript execution in PDF.js — Codean Labs
This post details CVE-2024-4367, a vulnerability in PDF.js found by Codean Labs. PDF.js is a JavaScript-based PDF viewer maintained by Mozilla. This bug allows an attacker to execute arbitrary JavaScript code as soon as a malicious PDF file is opened. This affects all Firefox users (<126) because PDF.js is used by Firefox to show PDF files, but also seriously impacts many web- and Electron-based a
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
GitHub - e18e/ecosystem-issues: A place to keep track of ongoing efforts to improve performance in the JS ecosystem
Test: Support module mocking with conditional subpath imports in `package.json` by kasperpeulen · Pull Request #26688 · storybookjs/storybook
power-assert-monorepo/packages/node at main · twada/power-assert-monorepo
Release CLI v1.8.0 · biomejs/biome
[Tracking]: Rspack v1.0 · Issue #6689 · web-infra-dev/rspack
Release Release v1.7.0 · axios/axios
