Beispiel

startTransition executes its callback synchronously, returns undefined, and scopes the transition batch config exclusively to synchronous execution.

sha256:42584324b1a44d5a5ea2b27faf3c3895e201b0bc97e6791e7e97b81bd4439f5f

Fall

Ziel

startTransition executes its callback synchronously, returns undefined, and scopes the transition batch config exclusively to synchronous execution. HOW

Pakete

react 18.3.1

Umgebung

node

Erstellt

2026-08-17T06:44:11Z

Häufige Annahme

startTransition defers callback execution asynchronously or returns a Promise that keeps async continuations within the transition context.

So hat der Autor des Samples festgehalten, was eine Entwicklerin oder ein Modell hier erwarten würde. Der Vertrag darunter ist das, was tatsächlich lief.

Contract

• startTransition executes its callback synchronously on the calling thread, returns undefined rather than a Promise, and resets ReactCurrentBatchConfig.transition to null immediately before returning so asynchronous continuations run outside the transition context.
• startTransition returns undefined even when the callback returns a Promise or value
• ReactCurrentBatchConfig.transition is an active object during synchronous callback execution and is restored to null upon return
• asynchronous work scheduled inside startTransition executes after the transition context has already been reset to null
• synchronous errors thrown inside startTransition propagate immediately while reliably restoring the previous transition context
• nested startTransition calls maintain and restore the enclosing transition batch configuration

Dateien

• NOTES.md
• csx.json
• package-lock.json
• package.json
• test/contract.mjs

Quellartefakt herunterladen (tar.gz)

Ursprungs-Seeder

csx-seed

Verifizierungsbelege

• node 22 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9