Your question is JavaScript basics and React fundamentals. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain JavaScript basics (hoisting, const/let/var, deep/shallow copy, map/filter, spread operator) and describe common React hooks usage (useState, useCallback, useEffect) and TypeScript generics and interfaces.