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app.post('/api/items', (req, res) => {
  const { name, price } = req.body;
  if (!name || !price) {
    return res.status(400).json({ error: 'Name aur price daalna zaroori hai!' });
  }
  const newItem = { id: Date.now(), name, price };
  items.push(newItem);
  res.status(201).json(newItem);
});

// Zustand custom store setup (store/useUserStore.ts)
import { create } from 'zustand';

interface UserState {
  user: User | null;
  setUser: (user: User | null) => void;
  logout: () => void;
}

export const useUserStore = create<UserState>((set) => ({
  user: null,
  setUser: (user) => set({ user }),
  logout: () => set({ user: null }),
}));

// fixed dependency loop
useEffect(() => {
  const fetchStats = async () => {
    const data = await getStats();
    setStats(data); // State updates here
  };
  fetchStats();
}, []); // empty dependency to run only on mount

// Secure parameterized query representation
const userId = req.params.id;
// BEFORE: db.query(`SELECT * FROM users WHERE id = ${userId}`)
// AFTER (Parameterized):
const result = await db.query(
  'SELECT * FROM users WHERE id = $1',
  [userId]
);