Code reviewMediumcr-g180

Subject State mutationLevel Mid–Senior~18 minCommon in Algorithms & data structures interviewsIndustries Software development

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.

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Talk through your review

Code to reviewtsx

1function Cart() {2  const [items, setItems] = useState<Item[]>([]);3 4  const addItem = (item: Item) => {5    items.push(item);6    setItems(items);7  };8 9  return <button onClick={() => addItem(newItem())}>Add ({items.length})</button>;10}

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