A huge week for both Svelte and Next.js

Svelte 5 is Alive — The long awaited next major release of Svelte, the compiler-driven JS UI framework, is the “most significant release in the project’s history”, while remaining largely backwards compatible. A big addition is runes for explicitly declaring reactive state, but there’s much more besides. The official svelte.dev site has also undergone a big rebuild to act as an ‘omnisite’ for all things Svelte.

The Svelte Team

FlexGrid by Wijmo: The Industry-Leading JavaScript Datagrid — A fast and flexible DataGrid for building modern web apps. Key features and virtualized rendering are included in the grid module. Pick and choose special features to keep your app small. Built for JavaScript, extended to Angular, React, and Vue.

Wijmo From MESCIUS inc

GenAIScript: Microsoft’s Generative AI Scripting Environment — Microsoft is really poking at AI from all angles. TypeChat introduced a type-safe way to talk to LLMs; now GenAIScript offers a JavaScript-powered way to programmatically assemble prompts and process responses. They claim it “brings essential LLM prompt tooling into a cohesive scripting environment.”

Microsoft

Next.js 15 Released — It’s a big week for the popular (some may even argue default) React framework with Next.js Conf starting today, as well as this release. It includes a codemod CLI for easier upgrading, async request APIs, alignment with React 19, and more.

Vercel

🤖 Transformers.js v3: Run Transformers in the Browser — A JS port of Hugging Face’s transformers Python library that can run natural language, vision, and audio machine learning models right in the browser. v3 adds WebGPU support for boosted performance and now supports Node, Deno and Bun too.

Hugging Face