Answer
React maintains current and work-in-progress trees. Commit replaces a whole subtree at once, ensuring atomicity.
Quick Answer
React uses lanes to batch related updates. When multiple state updates occur (within a transition, for example), React groups them into the same lane and commits them all together atomically. The commit phase is synchronous — no interruptions allowed. This guarantees users always see a consistent UI, never a half-applied state.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ