const match = cityStateRegex.match(cityStateRegex) // < HERE

  var breweryName = name || 'Hipster Brew Co.' // < HERE

var menuConfig = {
  title: 'Foo',
  body: 'Bar',
  buttonText: 'Baz',
  cancellable: true
} // < HERE

var menuConfig = {
  title: null,
  body: 'Bar',
  buttonText: null,
  cancellable: true
} // < HERE

var menuConfig = {
  title: 'Order',
  // User did not include 'body' key
  buttonText: 'Send',
  cancellable: true
} // < HERE

var name = 'Ryan McDermott' // < HERE

var Employee = function(name) {
  this.name = name;
} // < HERE

Employee.prototype.getName = function() {
  return this.name;
} // < HERE

require('request').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin', function(err, response) {
  if (err) {
    console.error(err);
  }
  else {
    require('fs').writeFile('article.html', response.body, function(err) {
      if (err) {
        console.error(err);
      } else {
        console.log('File written');
      }
    }) // < HERE
  }
}) // < HERE

require('request-promise').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin')
  .then(function(response) {
    return require('fs-promise').writeFile('article.html', response);
  })
  .then(function() {
    console.log('File written');
  })
  .catch(function(err) {
    console.error(err);
  }) // < HERE

require('request-promise').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin')
  .then(function(response) {
    return require('fs-promise').writeFile('article.html', response);
  })
  .then(function() {
    console.log('File written');
  })
  .catch(function(err) {
    console.error(err);
  }) // < HERE

    var request = await require('request-promise') // < HERE

let actions = function() {
  // ...
} // < HERE

let actions = function() {
  // ...
} // < HERE

Array.prototype.diff = function(comparisonArray) {
  const values = [];
  const hash = {};

  for (let i of comparisonArray) {
    hash[i] = true;
  }

  for (let i of this) {
    if (!hash[i]) {
      values.push(i);
    }
  }

  return values;
} // < HERE

car.setModel('F-150') // < HERE