Answer
React marks updates inside startTransition as belonging to a separate transition tree that can pause, resume, or discard work.
Quick Answer
The transition tree is the work-in-progress tree being built for a low-priority transition update. React renders it concurrently alongside the current tree. If an urgent update arrives, React abandons the transition tree, handles the urgent update on the current tree, and then starts a new transition tree incorporating all pending updates.
S
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