React Native: Closing the Scheduler's Race Conditions
A cluster of commits from Pieter De Baets retires two feature flags after the underlying race condition in React Native's scheduler was fixed upstream, while a separate series locks down C++ module boundaries with stable API guards ahead of a broader interface freeze.
Duration: PT2M28S
Episode overview
This episode is a short developer briefing from React Native.
It explains recent repository work in plain language.
- Show: React Native
- Published: 2026-08-26T13:04:46Z
- Audio duration: PT2M28S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
You're listening to React Native, your developer briefing for August 26th, 2026.
Today's biggest story is cleanup work that closes out a long-running safety investigation in the rendering scheduler.
For months, a feature flag called "enable scheduler delegate invalidation" has guarded against a use-after-free bug: rendering updates that outlive a destroyed delegate. Commit 9682967 removes that flag entirely, because the real fix landed elsewhere — the runtime scheduler now clears its pending task and rendering…
The second theme is architectural: five separate commits from Jakub Piasecki, plus a new pull request, are adding "stable API guards" across modules — performance timelines, networking, web performance, the scheduler, and now the runtime scheduler in PR 58150. These guards are inert today, but they're laying…
Smaller but practical: PR 58147 brings Android's networking module in line with iOS by including app name and version in the default User-Agent header. And two commits from Christian Falch fix Swift Package Manager naming collisions that could silently break iOS builds when dependency names collide.
What to remember: the scheduler race is meaningfully safer now, but not…
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