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useCallback hook pattern
#react · #hooks
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docker compose up -d
#docker
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#career · #react
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MDN Array.prototype.map()
#js · #mdn
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useCallback
useCallback hook pattern
npx create-react-app

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useCallback.ts
const handleClick = useCallback(() => {
2doSomething(id);
}, [id]);

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You are a senior TypeScript engineer. Review the following code for bugs, performance issues...

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typescript
async function fetchUserData(userId: string) {
2const res = await fetch(`/api/users/${userId}`);
3if (!res.ok) throw new Error('Not found');
4return res.json();
}
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#typescript#async#fetch#error-handling#api
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