Expense Summary

Given a list of expenses, calculate useful totals and identify the largest expense. The final summary should reuse the smaller helper functions.

Write these functions:

• calculateTotal(expenses) should return the total amount spent.

• calculateCategoryTotal(expenses, category) should return the total for one category.

• findLargestExpense(expenses) should return the full expense object with the largest amount.

• createExpenseSummary(expenses) should return total, foodTotal, transportTotal, and largestExpense.

Sample checks:

const expenses = [  { id: 1, category: 'food', amount: 24 },  { id: 2, category: 'transport', amount: 15 },  { id: 3, category: 'food', amount: 18 },  { id: 4, category: 'books', amount: 40 },];console.log(createExpenseSummary(expenses));console.log(calculateCategoryTotal(expenses, 'food'));console.log(calculateCategoryTotal(expenses, 'health'));console.log(findLargestExpense(expenses));

Expected output:

{ total: 97, foodTotal: 42, transportTotal: 15, largestExpense: { id: 4, category: "books", amount: 40 } }420{ id: 4, category: "books", amount: 40 }

findLargestExpense should return the whole expense object, not only the amount.