Array helper methods in array of objects

const employees = [
  { ID: 123, empName: "kane", department: "HR", salary: 65000, age: 32 },
  { ID: 100, empName: "Jane", department: "Office", salary: 45000, age: 32 },
  { ID: 123, empName: "Liz", department: "MBA", salary: 39000, age: 45 },
  { ID: 1008, empName: "McFe", department: "Science", salary: 25000, age: 29 },
];
// i. Find and Display employees earning more than 40000 salary
console.log("Employees earning more than 40000 salary:");
const highSalaryEmployees = employees.filter(
  (employee) => employee.salary > 40000
);
highSalaryEmployees.forEach((employee) => {
  console.log(
    `ID: ${employee.ID}, Name: ${employee.empName}, Salary: ${employee.salary}`
  );
});

// ii. Display the Employees details in alphabetical order
console.log("Employees details in alphabetical order (by name):");
const sortedEmployees = employees.sort((a, b) =>
  a.empName.localeCompare(b.empName)
);
sortedEmployees.forEach((employee) => {
  console.log(
    `ID: ${employee.ID}, Name: ${employee.empName}, Department: ${employee.department}, Salary: 
    ${employee.salary}`
  );
});

// iii. Find and display the total salary paid to all employees
const totalSalary = employees.reduce(
  (total, employee) => total + employee.salary,
  0
);
console.log("Total salary paid to all employees:", totalSalary);

// iv. Find maximum salary
const maxSalary = employees.reduce(
  (max, employee) => (employee.salary > max ? employee.salary : max),
  employees[0].salary
);
console.log("Maximum Salary:", maxSalary);

// v. Find minimum salary
const minSalary = employees.reduce(
  (min, employee) => (employee.salary < min ? employee.salary : min),
  employees[0].salary
);
console.log("Minimum Salary:", minSalary);

// vi. Find employees less than 30 years old
const youngEmployees = employees.filter((employee) => employee.age < 30);
console.log("Employees less than 30 years old:");
youngEmployees.forEach((employee) => {
  console.log(
    `ID: ${employee.ID}, Name: ${employee.empName}, Age: ${employee.age}`
  );
});
// vii) Give bonus to employees with salary less than 30000
const bonusEmployees = employees.map((employee) => {
  if (employee.salary < 30000) {
    return { ...employee, salary: employee.salary + 5000 };
  }
  return employee;
});

console.log("Employees with bonus:");
bonusEmployees.forEach((employee) => {
  console.log(
    `ID: ${employee.ID}, Name: ${employee.empName}, Salary: ${employee.salary}`
  );
});