No longer crash editor after removing link from image when LinkConfig#addTargetToExternalLinks is enabled

packages/ckeditor5-link/src/utils/automaticdecorators.ts

@@ -109,6 +109,13 @@ export default class AutomaticDecorators {
 				const linkInImage = Array.from( viewFigure.getChildren() )
 					.find( ( child ): child is ViewElement => child.is( 'element', 'a' ) )!;
 
+				// It's not guaranteed that the anchor is present in the image block during execution of this dispatcher.
+				// It might have been removed during the execution of unlink command that runs the image link downcast dispatcher
+				// that is executed before this one and removes the anchor from the image block.
+				if ( !linkInImage ) {
+					return;
+				}
+
 				for ( const item of this._definitions ) {
 					const attributes = toMap( item.attributes );
 

packages/ckeditor5-link/tests/unlinkcommand.js

@@ -3,11 +3,15 @@
  * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
  */
 
+import { global } from '@ckeditor/ckeditor5-utils';
 import ModelTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/modeltesteditor.js';
 import UnlinkCommand from '../src/unlinkcommand.js';
 import LinkEditing from '../src/linkediting.js';
 import { setData, getData } from '@ckeditor/ckeditor5-engine/src/dev-utils/model.js';
 import testUtils from '@ckeditor/ckeditor5-core/tests/_utils/utils.js';
+import LinkImageEditing from '../src/linkimageediting.js';
+import Image from '@ckeditor/ckeditor5-image/src/image.js';
+import ClassicTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/classictesteditor.js';
 
 describe( 'UnlinkCommand', () => {
 	let editor, model, document, command;
@@ -508,4 +512,43 @@ describe( 'UnlinkCommand', () => {
 			expect( getData( model ) ).to.equal( '<paragraph>[<linkableInline></linkableInline>]</paragraph>' );
 		} );
 	} );
+
+	describe( '`Image` plugin integration', () => {
+		let editorElement;
+
+		beforeEach( async () => {
+			await editor.destroy();
+
+			editorElement = global.document.body.appendChild(
+				global.document.createElement( 'div' )
+			);
+
+			return ClassicTestEditor.create( editorElement, {
+				extraPlugins: [ LinkEditing, LinkImageEditing, Image ],
+				link: {
+					addTargetToExternalLinks: true
+				}
+			} )
+				.then( newEditor => {
+					editor = newEditor;
+					model = editor.model;
+					document = model.document;
+				} );
+		} );
+
+		afterEach( async () => {
+			await editor.destroy();
+			editorElement.remove();
+		} );
+
+		it( 'should not crash during removal of external `linkHref` from `imageBlock` when `Image` plugin is present', () => {
+			setData( model, '[<imageBlock linkHref="url"></imageBlock>]' );
+
+			expect( () => {
+				editor.execute( 'unlink' );
+			} ).not.to.throw();
+
+			expect( getData( model ) ).to.equal( '[<imageBlock></imageBlock>]' );
+		} );
+	} );
 } );