react_code_Thu Feb 12 2026 03:24:35 GMT+0600 (Bangladesh Standard Time)

```javascript
const products = [
  { id: 1, name: 'Laptop', price: 1200, category: 'Electronics', stock: 5 },
  { id: 2, name: 'Smartphone', price: 800, category: 'Electronics', stock: 12 },
  { id: 3, name: 'Coffee Maker', price: 150, category: 'Appliances', stock: 8 },
  { id: 4, name: 'Desk Chair', price: 250, category: 'Furniture', stock: 15 },
  { id: 5, name: 'Monitor', price: 300, category: 'Electronics', stock: 0 },
];

/**
 * FILTER: Get only electronics that are in stock
 */
const availableElectronics = products.filter(product =>
  product.category === 'Electronics' && product.stock > 0
);

/**
 * MAP: Create a list of formatted strings with a 10% discount price applied
 */
const productPriceLabels = products.map(product => {
  const discountedPrice = (product.price * 0.9).toFixed(2);
  return `${product.name} is now $${discountedPrice}`;
});

/**
 * REDUCE: Calculate the total inventory value
 */
const totalInventoryValue = products.reduce((accumulator, product) => {
  return accumulator + (product.price * product.stock);
}, 0);

/**
 * CHAINED: Get the total cost of all electronics (Filter -> Map -> Reduce)
 */
const totalElectronicsCost = products
  .filter(p => p.category === 'Electronics')
  .map(p => p.price)
  .reduce((sum, price) => sum + price, 0);

// Usage
console.log('Available Electronics:', availableElectronics);
console.log('Price Labels:', productPriceLabels);
console.log('Total Inventory Value:', totalInventoryValue);
console.log('Sum of Electronics Prices:', totalElectronicsCost);
```