fix(table): Fixes an issue with ngDestroy timings.

libs/barista-components/table/src/cell.ts

@@ -231,10 +231,18 @@ export class DtCell implements AfterContentInit, OnDestroy {
   }
 
   ngOnDestroy(): void {
-    this._stateChanges.complete();
-    this._sortChangeSubscription.unsubscribe();
-    this._destroy.next();
-    this._destroy.complete();
+    // Exhaustively check if the subjects still exist during the onDestroy
+    // ADES-5588
+    if (this._stateChanges) {
+      this._stateChanges.complete();
+    }
+    if (this._sortChangeSubscription) {
+      this._sortChangeSubscription.unsubscribe();
+    }
+    if (this._destroy) {
+      this._destroy.next();
+      this._destroy.complete();
+    }
     if (this._row) {
       this._row._unregisterCell(this);
     }

libs/barista-components/table/src/header/header-cell.ts

@@ -61,7 +61,11 @@ export class DtHeaderCell implements OnDestroy {
   }
 
   ngOnDestroy(): void {
-    this._destroy.next();
-    this._destroy.complete();
+    // Exhaustively check if the subjects still exist during the onDestroy
+    // ADES-5588
+    if (this._destroy) {
+      this._destroy.next();
+      this._destroy.complete();
+    }
   }
 }

libs/barista-components/table/src/order/order-cell.ts

@@ -122,8 +122,12 @@ export class DtOrderCell<T>
   }
 
   ngOnDestroy(): void {
-    this._destroy$.next();
-    this._destroy$.complete();
+    // Exhaustively check if the subjects still exist during the onDestroy
+    // ADES-5588
+    if (this._destroy$) {
+      this._destroy$.next();
+      this._destroy$.complete();
+    }
   }
 
   /**

libs/barista-components/table/src/selection/selectors.ts

@@ -163,8 +163,12 @@ export class DtTableHeaderSelector<T> implements OnDestroy {
   }
 
   ngOnDestroy(): void {
-    this._destroy$.next();
-    this._destroy$.complete();
+    // Exhaustively check if the subjects still exist during the onDestroy
+    // ADES-5588
+    if (this._destroy$) {
+      this._destroy$.next();
+      this._destroy$.complete();
+    }
   }
 
   /** @internal Callback when the master checkbox is interacted with */

libs/barista-components/table/src/sort/sort.ts

@@ -103,7 +103,8 @@ export class DtSort
 
   /** Event emitted when the user changes either the active sort or sort direction. */
   @Output('dtSortChange')
-  readonly sortChange: EventEmitter<DtSortEvent> = new EventEmitter<DtSortEvent>();
+  readonly sortChange: EventEmitter<DtSortEvent> =
+    new EventEmitter<DtSortEvent>();
 
   /** Sets the active sort id and determines the new sort direction. */
   sort(sortable: DtSortHeader): void;
@@ -172,8 +173,14 @@ export class DtSort
   }
 
   ngOnDestroy(): void {
-    this._stateChanges.complete();
-    this._initialized.complete();
+    // Exhaustively check if the subjects still exist during the onDestroy
+    // ADES-5588
+    if (this._stateChanges) {
+      this._stateChanges.complete();
+    }
+    if (this._initialized) {
+      this._initialized.complete();
+    }
   }
 }
 

libs/barista-components/table/src/table.ts

@@ -284,9 +284,15 @@ export class DtTable<T> extends _DtTableBase<T> implements OnDestroy {
 
   ngOnDestroy(): void {
     super.ngOnDestroy();
-    this._destroy$.next();
-    this._destroy$.complete();
-    this._portalOutletSubscription.unsubscribe();
+    // Exhaustively check if the subjects still exist during the onDestroy
+    // ADES-5588
+    if (this._destroy$) {
+      this._destroy$.next();
+      this._destroy$.complete();
+    }
+    if (this._portalOutletSubscription) {
+      this._portalOutletSubscription.unsubscribe();
+    }
   }
 
   /**