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fix(cdk/portal): prevent calling ApplicationRef.detachView on destroyed instance #24775

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Apr 18, 2022
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6 changes: 5 additions & 1 deletion src/cdk/portal/dom-portal-outlet.ts
Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,11 @@ export class DomPortalOutlet extends BasePortalOutlet {
);
this._appRef!.attachView(componentRef.hostView);
this.setDisposeFn(() => {
this._appRef!.detachView(componentRef.hostView);
// Verify that the ApplicationRef has registered views before trying to detach a host view.
// This check also protects the `detachView` from being called on a destroyed ApplicationRef.
if (this._appRef!.viewCount > 0) {
this._appRef!.detachView(componentRef.hostView);
}
componentRef.destroy();
});
}
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