TYPESCRIPT

mat dialog disable close

this.dialog.open(DialogComponent, { disableClose: true });

material dialog disable close

  // disableclose 'true' but if you try to backdrop click it diesn't lose data
  @HostListener('window:keyup.esc') onKeyUp() {
    this._dialogRef.close(this.socios);
  }
  ngOnInit(): void {
    this._dialogRef.disableClose = true;
    this._dialogRef.backdropClick().subscribe(_ => {
      this._dialogRef.close(this.socios);
    })
  }