This Week In React #260: TanStack, Actions, Immer, RTK, Streamdown, XState Store, ReScript, HTML streaming | Vercel v0, Worklets, Skia, Tailwind, Native Stack, Gifted Chat, Enriched | TC39, Playwright, Bun, Astro, Better Auth | This Week In React

"Why is internationalization so hard? How do you set up i18n in Next.js so it feels built-in - not bolted on? In learn.next-intl.dev, Jan Amann (maintainer of next-intl) distills years of hard-won lessons into practical patterns you can apply today: 🌍 I18n ≠ translations - Understand the pieces that make a truly localized experience 🧩Architecture that scales - Routing, locales, time zones & currencies done right 🚀The full picture - Backend, CMS, SEO, dev tooling, AI translations & more"

"TanStack Pacer is now in Beta A new framework-agnostic library has just landed from the TanStack hands. It offers high-quality utilities for controlling function execution timing, including debouncing, throttling, rate limiting, batching, and more. It provides a dedicated React adapter (@tanstack/react-pacer), which gives you a set of easy-to-use hooks on top of the core Pacer utilities, such as useDebouncedValue, useThrottledValue, useQueuedState, or useBatcher. It also gives you the ability to debug the code via TanStack Devtools."

TanStack Pacer debuted in Beta as a framework-agnostic library offering utilities for controlling function execution timing, including debouncing, throttling, rate limiting, and batching. A dedicated React adapter (@tanstack/react-pacer) exposes hooks like useDebouncedValue, useThrottledValue, useQueuedState, and useBatcher, and integrates with TanStack Devtools for debugging. Next-Intl supplies practical patterns for Next.js internationalization covering routing, locales, time zones, currencies, backend integration, CMS, SEO, dev tooling, and AI translations. Additional highlights include a reported 20,000x improvement in TanStack Router route matching speed, Next.js on Kubernetes performance tips, a React 19 Actions tutorial, and Vercel’s v0 iOS app breakdown.

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