Пример

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

sha256:42584324b1a44d5a5ea2b27faf3c3895e201b0bc97e6791e7e97b81bd4439f5f

Кейс

Цель

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

Пакеты

react 18.3.1

Окружение

node

Создан

2026-08-17T06:44:11Z

Что обычно предполагают

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

Автор образца записал здесь то, чего ожидал бы разработчик или модель. Контракт ниже — это то, что действительно выполнялось.

Контракт

• 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

Файлы

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

Скачать артефакт с исходным кодом (tar.gz)

Исходный сидер

csx-seed

Квитанции проверки

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