message: fix(live-chart): fix memory leak.
diff: @@ -25,6 +25,7 @@ export class LiveChartComponent implements OnDestroy {
  public type: ChartType;
  private timerSubscription: Subscription;
  + private datePipe = new DatePipe('en');
  constructor() {
  this.data = {
  @@ -38,8 +39,7 @@ export class LiveChartComponent implements OnDestroy {
  updateData() {
  const time: Date = new Date(),
  - datePipe = new DatePipe('en'),
  - formattedTime = datePipe.transform(time, 'HH:mm:ss'),
  + formattedTime = this.datePipe.transform(time, 'HH:mm:ss'),
  random = getRandomInt(1, 40),
  data = this.data.series[0],
  labels = this.data.labels;
  