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Code reviewMedium
Question
Review this React TypeScript component.
What a strong answer looks like
Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.
Learn the concepts
function CheckoutButton({ cartId }: { cartId: string }) { const [done, setDone] = useState(false); const pay = async () => { const res = await fetch('/api/checkout', { method: 'POST', body: JSON.stringify({ cartId }), }); if (res.ok) setDone(true); }; return <button onClick={pay} disabled={done}>Pay now</button>;}Run or narrate your approach, then ask the coach.