main.js

export function sumSalaries(salaries) {
  let sum = 0;
  for (const salary of Object.values(salaries)) {
    sum += salary;
  }
  return sum;
}

export function count(user) {
  return Object.keys(user).length
}

export function topSalary(salaries) {
  let top = null;
  for (let [name, salary] of Object.entries(salaries)) {
    if (!top) { top = name; }

    if (salaries[top] < salary) {
      top = name;
    }
  }
  return top;
}