Vibe codingHardvc-g115

Subject Ai code reviewLevel Senior–Staff~20 minCommon in Concurrency interviewsIndustries Software development

Question

This AI-written search-as-you-type component sometimes shows results for a previous query. Reproduce the race and fix it.

tsx

1function Search({ query }: { query: string }) {2  const [results, setResults] = useState<Item[]>([]);3  useEffect(() => {4    fetch(`/api/search?q=${query}`)5      .then(r => r.json())6      .then(data => setResults(data.items));7  }, [query]);8  return <ResultList items={results} />;9}

What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.

Learn the concepts

Describe your solution

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.