Introduce removeElementFromParent helper

src/browser/AccessibilityManager.ts

@@ -12,6 +12,7 @@ import { addDisposableDomListener } from 'browser/Lifecycle';
 import { Disposable } from 'common/Lifecycle';
 import { ScreenDprMonitor } from 'browser/ScreenDprMonitor';
 import { IRenderService } from 'browser/services/Services';
+import { removeElementFromParent } from 'browser/Dom';
 
 const MAX_ROWS_TO_READ = 20;
 
@@ -106,7 +107,7 @@ export class AccessibilityManager extends Disposable {
 
   public dispose(): void {
     super.dispose();
-    this._terminal.element?.removeChild(this._accessibilityTreeRoot);
+    removeElementFromParent(this._accessibilityTreeRoot);
     this._rowElements.length = 0;
   }
 
@@ -240,9 +241,7 @@ export class AccessibilityManager extends Disposable {
 
     // Only detach/attach on mac as otherwise messages can go unaccounced
     if (isMac) {
-      if (this._liveRegion.parentNode) {
-        this._accessibilityTreeRoot.removeChild(this._liveRegion);
-      }
+      removeElementFromParent(this._liveRegion);
     }
   }