Run JavaScript on real background threads in React Native — no Workers, no Worklets. Uses Hermes on both iOS and Android, each on a dedicated OS-level thread. Built as a New Architecture TurboModule.

NOTE: This proposal has subsumed the Async Explicit Resource Management proposal. This proposal repository should be used for further discussion of both sync and async of explicit resource management.

So, what is scheduler.yield()? It’s a method of the Scheduler interface from the new Prioritized Task Scheduling API. This method allows you, as a developer, to pause your JavaScript execution and ...