MatDialog passing object in data is by reference ?

[Christophe MAILFERT]

I have this code :

```

export class DialogValidateComponent implements OnInit {

...

...

sequence: Sequence;

...

constructor(
  private fb: FormBuilder,
  private sequenceService: SequenceService,
  private dialogRef: MatDialogRef<DialogValidateComponent>,
  @Inject(MAT_DIALOG_DATA) public data: any) {
  this.sequence = data.sequence;
}

...
...
...

submit(): void {
...
  this.sequence.status = Sequence.STATUS_VALIDATED;
  this.sequence.major_index = splittedVersion[0];
  this.sequence.minor_index = splittedVersion[1];

  this.dialogRef.close();
});

```

In my main component:

```

const dialogRef = this.dialog.open(DialogValidateComponent, {
  data: {
    sequence: this.sequence
  },
  width: '350px'
});

dialogRef.afterClosed().subscribe(result => {
  if (result) {}
});

```

Without return anything in dialogRef.close my object has been updated in my main component.

So the question : is data object is passing by reference ?

Thx for advance.