avg_with_reduce.js

const basket = [
  { name:"apple", type: "fruit", calories: 52 }, 
  { name:"broccoli", type: "vegetable", calories: 45 },
  { name:"banana", type: "fruit", calories: 89 }
];

// Try to understand acc without looking at the last line
const { avgCalories } = basket.reduce((acc, food) => {
  if (food.type !== "fruit"){
    return acc;
  }
   
  const fruitCount = acc.fruitCount + 1;
  const avgCalories = (acc.avgCalories * acc.fruitCount + food.calories) / fruitCount;
  
  return { fruitCount, avgCalories };
}, { fruitCount: 0, avgCalories: 0 });