// WRONG - ES6
const MAX_RETRIES = 3;
let currentUser = gs.getUser();

// CORRECT - ES5
var MAX_RETRIES = 3;
var currentUser = gs.getUser();

// WRONG - Arrow functions
var active = incidents.filter(inc => inc.active);
var process = () => { return 'done'; };

// CORRECT - ES5 functions
var active = [];
for (var i = 0; i < incidents.length; i++) {
  if (incidents[i].active) {
    active.push(incidents[i]);
  }
}
var process = function() { return 'done'; };

// WRONG - Template literals
var message = `Incident ${number} assigned to ${user}`;

// CORRECT - String concatenation
var message = 'Incident ' + number + ' assigned to ' + user;

// WRONG - for...of
for (var item of items) {
  gs.info(item);
}

// CORRECT - Traditional for loop
for (var i = 0; i < items.length; i++) {
  gs.info(items[i]);
}

// WRONG - Default parameters
function process(incident, priority = 3) {
  // ...
}

// CORRECT - Manual defaults
function process(incident, priority) {
  if (typeof priority === 'undefined') {
    priority = 3;
  }
  // ...
}