FrontendHaltJavaScript·Advanced·Conceptual·1 min read
Can an unresolved promise leak forever?
Short interview answer
A promise and attached handlers are collectible when nothing reachable refers to them. It becomes a leak when a long-lived owner, pending host operation, or captured resource retains the chain.
Key takeaway
Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.