A roundup of the most compelling recent developments in the JavaScript ecosystem. Key highlights include the rise of local-first SQL datastores in the browser (PGlite, RxDB), WinterTC's push for truly universal isomorphic JavaScript across Node/Deno/Bun/Cloudflare Workers, the growing adoption of reactive Signals for state management, and JSR as a modern alternative to NPM with built-in TypeScript support. Also covered: Deno Deploy reaching general availability as a full-stack edge platform with AI-code sandboxing, and ESLint v10 dropping the legacy .eslintrc config format in favor of flat config.
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