OSS Feed: 2026-03-29

A Saturday roundup of activity across the React, Next.js, and TanStack ecosystems. Quite a few engineers were active reviewing and commenting on PRs.

@acdlite

Andrew was busy reviewing Next.js internals — all focused on navigation and prefetching improvements:

• Commented on Respect generateStaticParams in instant navigation shell — static param handling for instant navs
• Commented on [Prefetch Inlining] Generate size-based hints on server — server-side prefetch hint generation
• Commented on [test] Deflake instant-navs-devtools — test stability fix
• Commented on [Prefetch Inlining] Size-based static prefetch bundling — bundling strategy for prefetched content
• Commented on Unify CacheNode RSC rendering and spawn dynamic requests during instant test hydration — unifying cache node rendering paths

@gaearon

Dan was active on the React docs site:

• Commented on Accept header negotiation beforeFiles — header negotiation for react.dev
• Commented on Add next/image component as MDX component — improving image handling in docs
• Commented on New Italian Translation Progress — supporting the Italian translation effort

@sebmarkbage

A quiet day for Sebastian. 🌿

@tannerlinsley

Tanner was the most active today, touching TanStack Query, Router, and the new TanStack DB:

• Commented on chore(deps): bump websocket-extensions — dependency maintenance in Query
• Commented on fix: ssr render error — SSR fix in TanStack Router
• Commented on RFC - define query types — query type definitions RFC
• Commented on Add SSR & RSC Support for @tanstack/react-db — SSR/RSC support for TanStack DB is being discussed!
• Commented on Discussion: DI Container, Transaction Scoping, and Testability — architectural discussion for TanStack DB
• Commented on Remove unused code — cleanup in Query
• Commented on chore(deps): bump websocket-extensions (suspense example) — more dep bumps

@leerob

A quiet day for Lee. 🌿

@timneutkens

Tim was reviewing Next.js PRs focused on performance and DX:

• Commented on fix(config): guard cloneObject against circular references — config safety improvement
• Commented on Perf: Only instrument clientComponentLoadTimes when used — performance optimization to reduce instrumentation overhead
• Commented on fix(next): improve getStaticPaths error message — better DX for static path errors

@bvaughn

Brian shipped a PR for react-resizable-panels:

• Opened PR Import version 3 saved layouts in version 4 — migration path for v3→v4 saved layouts
• Commented on Import version 3 saved layouts in version 4? — responding to the original feature request

@t3dotgg

A quiet day for Theo. 🌿

@TkDodo

Dominik split his time between TanStack Query and Sentry:

• Commented on isSuccess() not triggering effect() during testing — debugging a testing edge case in Query
• Commented on ref(alerts): migrate project alerts settings form — Sentry alerts refactor
• Commented on ref(apiQueryKey): Refactor ApiQueryKey — query key architecture in Sentry
• Commented on ref(nav): move whatsnew outside of its folder — Sentry nav cleanup
• Commented on ref(whats-new): Single data-fetch source — consolidating data fetching in Sentry

@phryneas

Lenz reviewed an Apollo Client fix:

• Commented on fix(useQuery): prevent hydration mismatch when ssr: false and skip: true — hydration edge case fix

@markerikson

A quiet day for Mark. 🌿

@kettanaito

Artem was active across MSW and related projects:

• Commented on feat: implement msw plugin — MSW plugin for openapi-ts is in progress!
• Commented on Zod triggers unsafe-eval CSP error — CSP compatibility issue in Zod
• Commented on TransformStream doesn't exist on React Native — React Native compatibility for MSW
• Commented on high severity npm libs — security audit in mocking-techniques

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Today's Highlight

🔥 TanStack DB is gaining momentum — Tanner was deep in discussions about SSR/RSC support (#545) and DI container architecture (#1420) for TanStack DB. This is a relatively new project in the TanStack ecosystem and it's exciting to see server-side rendering support being planned from the start.

Also notable: Brian Vaughn shipped a v3→v4 migration path for react-resizable-panels (#699), and Artem Zakharchenko is working on an MSW plugin for openapi-ts (#3570) — auto-generating mock handlers from OpenAPI specs would be a huge DX win.