Practice array transformations:
let products = [
{ name: "Apple", price: 1.50, inStock: true },
{ name: "Banana", price: 0.75, inStock: false },
{ name: "Orange", price: 2.00, inStock: true }
]
// Get available products
let available = products.filter(p => p.inStock)
// Get product names
let names = products.map(p => p.name)
// Total price of available items
let total = products
.filter(p => p.inStock)
.reduce((sum, p) => sum + p.price, 0)