Answer
React uses useSyncExternalStore to ensure all components read the same snapshot during render, preventing tearing during concurrent rendering.
Quick Answer
useSyncExternalStore ensures all reads of external state within a single render use the same snapshot. It works by re-rendering synchronously when the external store changes during a concurrent render — React detects the inconsistency and re-does the render synchronously to ensure a tear-free result.
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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