Oxfmt Beta
We are excited to announce that Oxfmt has reached beta. Oxfmt is a Rust-powered, Prettier-compatible code formatter built for the JavaScript ecosystem. It is designed to deliver full compatibility with modern tooling while dramatically improving performance. In benchmarks, Oxfmt is more than 30× faster than Prettier and 3× faster than Biome on an initial run without caching. See the full benchmark
Writing Good Unit Tests
In my first job as a software engineer the project I was working on grew out of control. As often happens, use cases were added without proper refactoring and with more users we were drowning in support tickets and nothing seemed to work. It was clear we needed to push for quality so we started adding unit tests. The tech lead at the time mandated high test coverage. But here's the reality: writin
React Native 0.84 - Hermes V1 by Default · React Native
Today we're excited to release React Native 0.84! This release makes Hermes V1 the default JavaScript engine, bringing significant performance improvements to all React Native apps. We've also continued removing the Legacy Architecture on both iOS and Android, and are shipping precompiled iOS binaries by default. Highlights​ Hermes V1 as Default Precompiled Binaries on iOS by Default Legacy Archit
OpenWebF - OpenWebF
The way to build fast, native flutter apps with JavaScript and CSS Bring JavaScript and Web Dev to The high-performance W3C/WHATWG compliant web runtime for Flutter. Use your favorite web frameworks like React and Vue to build native apps with direct access to the entire Flutter ecosystem. Beyond WebView PerformanceWebF is a custom high-performance runtime, not a system WebView wrapper. We optimiz
State of JavaScript 2025
When the long-awaited Nintendo Switch 2 recently came out, it had been eight years since the original Switch. Can you imagine what that must've been like for those poor game developers? Eight long years having to develop for the same platform, with no new APIs, no new capabilities, no new bugs, no new versions that break your build… Those poor souls! Thankfully that's something we won't ever have
Release Version 28.0.0 · jsdom/jsdom
Overhauled resource loading customization. See the new README for details on the new API. Added MIME type sniffing to <iframe> and <frame> loads. Regression: WebSockets are no longer correctly throttled to one connection per origin. This is a result of the bug at nodejs/undici#4743. Fixed decoding of the query components of <a> and <area> elements in non-UTF-8 documents. Fixed XMLHttpRequest fetch
Lodash Rolls Out Major Security Overhaul | OpenJS Foundation
With the release of Lodash 4.17.23 and the publication of CVE-2025-134655, the project is making visible progress in strengthening its security posture. Lodash remains a quiet but essential part of the JavaScript ecosystem that is deeply embedded in frameworks, build systems, and production applications across the web. With the release of Lodash 4.17.23 and the publication of CVE-2025-134655, the
Yarn 6 Preview
(more benchmarks are available here; we’re also setting up a new benchmark on massive megarepos, but those don’t run on other package managers yet) Beyond raw speed, these numbers unlock new opportunities. While some concepts are still in the ideation phase, others have already been implemented - such as the Lazy Install feature I’m just about to present. New features Our primary focus is completi
Introducing Lix: An embeddable version control system | Lix Blog
Introducing Lix: An embeddable version control system Lix is an embeddable version control system that can be imported as a library. Use lix, for example, to enable human-in-the-loop workflows for AI agents like diffs and reviews. It's just a library — Lix is a library you import. Get branching, diff, rollback in your existing stack Tracks semantic changes — diffs, blame, and history are queryable
Release 3.48.0 - 2026.01.21 · zloirock/core-js
Changes v3.47.0...v3.48.0 (126 commits) Map upsert proposal: Built-ins: Map.prototype.getOrInsert Map.prototype.getOrInsertComputed WeakMap.prototype.getOrInsert WeakMap.prototype.getOrInsertComputed Moved to stable ES, January 2026 TC39 meeting Added es. namespace modules, /es/ and /stable/ namespaces entries Use CreateDataProperty / CreateDataPropertyOrThrow in some missed cases, #1497 Minor fix
GitHub - ohmjs/ohm: A library and language for building parsers, interpreters, compilers, etc.
Ohm is a parsing toolkit consisting of a library and a domain-specific language. You can use it to parse custom file formats or quickly build parsers, interpreters, and compilers for programming languages. The Ohm language is based on parsing expression grammars (PEGs), which are a formal way of describing syntax, similar to regular expressions and context-free grammars. The Ohm library provides a
JSer.info 15周年: 15å¹´é–“ã®JavaScriptを振り返る
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GitHub - hamzaydia/verifyfetch: Resumable, verified downloads for large browser files. Fail at 3.8GB, resume from 3.8GB.
Asynchronous Code — Emscripten 5.0.1-git (dev) documentation
GitHub - LibPDF-js/core: A modern PDF library for TypeScript. Parse, modify, and generate PDFs with a clean, intuitive API.
GitHub - nyariv/SandboxJS: Safe eval runtime
Vanilla Web - Maximiliano Firtman
GitHub - dy/jz: Research: minimal JS subset compiling to WASM
GitHub - DoneDeal0/superdiff: Superdiff provides a complete and readable diff for both arrays and objects. Plus, it supports stream and file inputs for handling large datasets efficiently, is battle-tested, has zero dependencies, and is super fast.
jasmine/release_notes/6.0.0.md at main · jasmine/jasmine
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