drills-2.6.5.js

function makeStudentsReport(data) {
  return data.map(function(student) {
    return `${student.name}: ${student.grade}`
  })
}

function enrollInSummerSchool(students) {
  return students.map(function(student) {
    return {
      name: student.name,
      course: student.course,
      status: 'In Summer school'
    }
  });
}

function findById(items, idNum) {
 return items.find(function(item) {
   return (item.id === idNum)
 })
}

// BOOM!
function validateKeys(object, expectedKeys) {  
  return Object.keys(object).sort().join() === expectedKeys.sort().join();
}

function makeToDos(owner, toDos) {
   return {
     owner: owner,
     toDos: toDos,
     generateHtml: function() {
       return '<ul><li>' + toDos.join('</li><li>') + '</li></ul>';
     }
   }
}