RepoJournal
Meta Meta
114 wires and counting
$ status: archived — this briefing has stopped; the archive stays readable. browse live briefings →

$ status

wire 2026-07-25
stories 11
RSS Archive Reviews Topics

© 2026 RepoJournal Home Showcase Explore How it works Privacy

$ the-wire · showcase

REACT FIBER FIXES SINGLETON PROPERTY BLEED, REACT NATIVE STRIPS DEAD CODE

By RepoJournal · Filed · About Meta · Composed from the cited sources · methodology

gnoff Christoph Purrer Van der Auwermeulen Grégoire Nicola Corti
4 people shipped this
gnoff @gnoff 2 cited Christoph Purrer @christophpurrer 1 cited Van der Auwermeulen Grégoire @Gregoirevda 1 cited Nicola Corti @cortinico 1 cited

React plugged a critical Fiber bug where singleton cleanup was nuking third-party attributes, while React Native dropped unused timing code from iOS binaries.

React merged a fix [1] [2] that rewrites how Fiber releases singleton instances. The old path was wiping all properties indiscriminately, which trashed any attributes set by third-party scripts and browser extensions on the same singleton. The new implementation clears only properties based on the last committed props for that fiber, preserving external state. This is the kind of invisible breaking change that would surface in production as mysteriously vanished DOM behavior.

Over on React Native, the team is cleaning house ahead of the new architecture cutover. RCTTiming got axed from iOS binaries [3] since it's not used in the new architecture and is slated for full deletion. Codegen now properly handles iOS platform extensions [4], fixing a bug where the platform argument was being passed as an array index instead of the actual platform string, which means you can now use .ios.ts files for native module specs. Gradle 9 resource warnings got addressed [5] ahead of AGP9 upgrades breaking the build.

$ ls meta/reviews/ # the step-back reads

the week in review React 19.3 ships View Transitions, RN 0.88-rc breaks Touchable the month in review React, React Native, and Jest harden the stack
Topics: JavaScript AI / ML Full archive → Weekly reviews →

Quick answers

What shipped in Meta on July 25, 2026?
React plugged a critical Fiber bug where singleton cleanup was nuking third-party attributes, while React Native dropped unused timing code from iOS binaries. In total, 10 commits and 1 pull requests landed.
Who contributed to Meta on July 25, 2026?
4 developers shipped this update, including gnoff, Christoph Purrer, Van der Auwermeulen Grégoire, and Nicola Corti.
What were the notable Meta updates?
[Fiber] only remove properties from singletons on release, [Fiber] only remove properties from singletons on release (#37112), and Don't register unused RCTTimingCls in RN iOS (#57657).
♥

$ log Meta --recent

React Native strips dead config, React compiler fixes exponent folding 21 shipped React Native's generated SwiftPM manifests inherit the app's iOS floor, and SectionList scrolls to the right row 30 shipped React stops emulating bubbling for toggle events, fixes Fragment compareDocumentPosition 9 shipped React Native's Babel preset stops dropping Platform.select side effects 6 shipped

$ log --all # elsewhere on the wire

@openclaw Cold-start Gateway diagnostics stop crying wolf, doctor repairs plugin drift Agentic Coding Cline desktop bundles shrink, goose unblocks its own clicks

$ ls showcases/

Rails Django Laravel Node.js Go Vercel Vue.js Kubernetes HashiCorp Arch Linux Linux Anthropic

$ init your-desk

RepoJournal can write one of these for any repo you care about. Sign in with GitHub, pick your repos and sources, and your desk gets a wire like this one every morning.