message: Use arrow functions when able
diff: @@ -24,19 +24,13 @@ export default class MaintenanceBanner extends Component.extend({
  this.set('maintenance', data.maintenance);
  }).restartable(),
  }) {
  - start = computed('maintenance.start', function(): string {
  - return moment(this.get('maintenance.start')).format('lll');
  - });
  + start = computed('maintenance.start', (): string => moment(this.get('maintenance.start')).format('lll'));
  - end = computed('maintenance.end', function(): string {
  - return moment(this.get('maintenance.end')).format('lll');
  - });
  + end = computed('maintenance.end', (): string => moment(this.get('maintenance.end')).format('lll'));
  - utc = computed('maintenance.start', function(): string {
  - return moment(this.get('maintenance.start')).format('ZZ');
  - });
  + utc = computed('maintenance.start', (): string => moment(this.get('maintenance.start')).format('ZZ'));
  - alertClass = computed('maintenance.level', function(): string {
  + alertClass = computed('maintenance.level', (): string => {
  const levelMap = ['info', 'warning', 'danger'];
  return `alert-${levelMap[this.get('maintenance.level') - 1]}`;
  });
  