Answer
React tracks pending wakeables and detects repeated suspension cycles, surfacing errors to boundaries.
Quick Answer
React tracks already-resolved Suspense trees in the fiber structure. When a suspended Promise in an async tree depends on another suspended Promise, React resolves them in dependency order. React deduplicates identical Promises (same reference) and resolves the dependency chain bottom-up, retrying parent boundaries when child dependencies resolve.
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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