Answer
React builds a new UI tree in memory (double buffering) and commits only complete updates, ensuring consistent UI state.
Quick Answer
React uses the transition system and internal lanes to track which renders are in-progress. During concurrent rendering, React maintains consistency by committing all pending updates from one lane atomically before moving to the next. The commit phase is synchronous and non-interruptible — once React starts committing, it finishes.
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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