OSS Feed: 2026-04-18

A snapshot of what the React, TanStack, and Next.js core contributors have been shipping in the last 24 hours.

@acdlite

Andrew Clark kept the React ↔ Next.js prefetch pipeline moving. He was reviewing and iterating on several Next.js prefetch patches and also touched StrictMode effect behavior in React.

• Commented on Update tests for prefetch inlining (1/n) in vercel/next.js
• Commented on Remove prefetch from instant config
• Commented on Support more prefetch configuration options
• Commented on [Fiber] Double invoke Effects in StrictMode after Fast Refresh
• Commented on [Fiber] Double invoke Effects in Strict Mode during Hydration
• Commented on Implement react-server-dom-rspack — ongoing rspack bindings for RSC

@gaearon

A quiet day — no public activity.

@sebmarkbage

A quiet day — no public activity.

@tannerlinsley

Tanner was active across the TanStack ecosystem and a Payload CMS integration.

• Commented on feat: AG-UI core interop - spec-compliant event types in TanStack/ai
• Commented on feat: admin framework adapter pattern and tanstack support in payloadcms/payload
• Commented on Parallel Routes RFC in TanStack/router — parallel routing is coming to TanStack Router

@leerob

A quiet day — no public activity.

@timneutkens

Tim touched Next.js perf and triaged an old sticky-header <Link> issue.

• Commented on Perf: Simplify static metadata handling
• Commented on <Link> not scrolling top sticky header

@bvaughn

• Commented on [Panel][PersistentLayouts][Collapsible] Unable to expand collapsible panel back to its defaultSize if it is collapsed on init in react-resizable-panels

@t3dotgg

A quiet day — no public activity.

@TkDodo

Dominik had the busiest day of the feed, grinding through a big apiOptions migration inside getsentry/sentry and shipping an ESLint rule.

PRs opened:

• ref(tsc): trace item stats to apiOptions (draft)
• ref(tsc): explore saved queries endpoint to apiOptions
• ref(tsc): ai-conversations endpoint to apiOptions
• feat(eslint): no-unnecessary-type-narrowing — merged
• ref(tsc): group-search-views endpoint to apiOptions
• ref(tsc): :key and :key/values endpoint to apiOptions
• ref(tsc): checkIns endpoint to apiOptions

Notable reviews / comments:

• feat(seer): Consolidate fields on the Autofix Project details page
• SolidJS Devtools '/production' export in TanStack/query
• fix(ui): track topbar offset for sticky headers

@phryneas

• Commented on GHSA-mwcw-c2x4-8c55 — a security advisory in apollo-client-integrations

@markerikson

Mark was doing review work on the Replay toolchain.

• Commented on Update jest config and add more unit test coverage
• Commented on PRO-2387 forward REPLAY_CLIENT_SOURCE env as request header

@kettanaito

Artem shipped three PRs on MSW, including fixes for the Service Worker lifecycle and initial support for intercepting navigate requests.

PRs opened:

• chore: replace missing ServiceWorkerIncomingRequest with IncomingWorkerRequest — merged
• feat: support navigate requests (draft) — the implementation side of a long-requested feature
• fix: use pagehide instead of beforeunload for tracking closing pages — merged

Notable comments:

• Support intercepting navigate requests
• MSW sometimes still handles requests after worker is stopped

Today's Highlight

Two threads stand out today:

1. MSW is finally getting navigate request interception. Artem (@kettanaito) opened msw#2721 as a draft implementation of issue #1594 — a feature request that has been open for years. If you mock APIs in tests or local dev with MSW, this is the one to watch.

2. Andrew Clark is quietly reshaping how Next.js prefetching works. Three related PRs (#92908, #92761, #92859) moved forward today, touching prefetch inlining and the instant config. Expect the App Router's navigation model to feel different in a future release.

Bonus: @TkDodo opened seven PRs against getsentry/sentry in one day — a steady apiOptions migration that's a great case study in how to do a large incremental refactor across an app.