Jotai, an atomic state management library for React, has released version 3.0.0, now exclusively using ES modules. It maintains backward compatibility but removes some deprecated APIs. Migration is straightforward for most users. This version emphasizes a leaner core with improvements while deferring significant feature changes for future updates.

Meta recently announced the beta release of Astryx, an open-source React design system developed internally over eight years. Astryx builds on React 19 and StyleX to provide over 150 accessible UI components, customizable CSS design tokens, and dedicated CLI and MCP tooling — for both engineers and AI agents.

tsgolint has released a stable v7, enhancing TypeScript linting with native Go speed. It offers type-aware linting, leveraging TypeScript's semantic analysis through the typescript-go compiler. Oxlint manages configurations and file discovery. The release, compatible with TypeScript 7.0.2, handles 59 of 61 type-aware rules and shows significant performance improvements over ESLint.

Matteo Collina has proposed a Virtual File System (VFS) for Node.js core through the node:vfs module. The proposal includes about 19,000 lines of code and addresses common workflow challenges. While it has community support, concerns have arisen regarding the use of AI in its development, prompting debates about its implications for code verification and necessity in the Node.js ecosystem.

Safari's release of version 26.2 in December introduced support for the scrollend event, completing its alignment with major browsers. This event signals when scrolling has definitively ended, enabling more reliable interactions without the need for workarounds. It improves performance for developers managing UI updates and data fetching based on scroll completion.

Module Federation 2.0, an open-source micro-frontend mechanism introduced with webpack 5, offers significant updates including dynamic TypeScript type hints, decoupled runtime layers, and Node.js support. It enhances compatibility across various bundlers and frameworks. Key features include a Side Effect Scanner and easier integration for remote modules, addressing previous adoption challenges.