fix(ui): resolve type errors

apps/client/src/app/components/home-holdings/home-holdings.component.ts

@@ -58,7 +58,7 @@ export class GfHomeHoldingsComponent implements OnInit {
   protected hasImpersonationId: boolean;
   protected hasPermissionToAccessHoldingsChart: boolean;
   protected hasPermissionToCreateActivity: boolean;
-  protected holdings: PortfolioPosition[];
+  protected holdings: PortfolioPosition[] | undefined;
   protected holdingType: HoldingType = 'ACTIVE';
   protected readonly holdingTypeOptions: ToggleOption[] = [
     { label: $localize`Active`, value: 'ACTIVE' },
@@ -181,8 +181,8 @@ export class GfHomeHoldingsComponent implements OnInit {
       this.viewModeFormControl.setValue(
         this.deviceType === 'mobile'
           ? GfHomeHoldingsComponent.DEFAULT_HOLDINGS_VIEW_MODE
-          : this.user?.settings?.holdingsViewMode ||
-              GfHomeHoldingsComponent.DEFAULT_HOLDINGS_VIEW_MODE,
+          : (this.user?.settings?.holdingsViewMode ??
+              GfHomeHoldingsComponent.DEFAULT_HOLDINGS_VIEW_MODE),
         { emitEvent: false }
       );
     } else if (this.holdingType === 'CLOSED') {
@@ -192,7 +192,7 @@ export class GfHomeHoldingsComponent implements OnInit {
       );
     }
 
-    this.holdings = [];
+    this.holdings = undefined;
 
     this.fetchHoldings()
       .pipe(takeUntilDestroyed(this.destroyRef))

libs/ui/src/lib/treemap-chart/treemap-chart.component.ts

@@ -56,7 +56,7 @@ export class GfTreemapChartComponent
   @Input() colorScheme: ColorScheme;
   @Input() cursor: string;
   @Input() dateRange: DateRange;
-  @Input() holdings: PortfolioPosition[];
+  @Input() holdings: PortfolioPosition[] | undefined;
   @Input() locale = getLocale();
 
   @Output() treemapChartClicked = new EventEmitter<AssetProfileIdentifier>();
@@ -70,15 +70,11 @@ export class GfTreemapChartComponent
     Chart.register(LinearScale, Tooltip, TreemapController, TreemapElement);
   }
   public ngAfterViewInit() {
-    if (this.holdings) {
-      this.initialize();
-    }
+    this.initialize();
   }
 
   public ngOnChanges() {
-    if (this.holdings) {
-      this.initialize();
-    }
+    this.initialize();
   }
 
   public ngOnDestroy() {
@@ -159,6 +155,10 @@ export class GfTreemapChartComponent
   }
 
   private initialize() {
+    if (!this.holdings) {
+      return;
+    }
+
     this.isLoading = true;
 
     const { endDate, startDate } = getIntervalFromDateRange({