feat(editor): Allow unknown nodes on new canvas (no-changelog) (#10962)

packages/editor-ui/src/components/canvas/elements/nodes/CanvasNode.vue

@@ -313,7 +313,6 @@ onBeforeUnmount(() => {
 			@open:contextmenu="onOpenContextMenuFromNode"
 		>
 			<NodeIcon
-				v-if="nodeTypeDescription"
 				:node-type="nodeTypeDescription"
 				:size="nodeIconSize"
 				:shrink="false"

packages/editor-ui/src/composables/__tests__/useCanvasOperations.spec.ts

@@ -102,15 +102,6 @@ describe('useCanvasOperations', () => {
 			expect(result).toBe(expectedDescription);
 		});
 
-		it('should throw an error when node type does not exist', () => {
-			const type = 'nonexistentType';
-			const { requireNodeTypeDescription } = useCanvasOperations({ router });
-
-			expect(() => {
-				requireNodeTypeDescription(type);
-			}).toThrow();
-		});
-
 		it('should return node type description when only type is provided and it exists', () => {
 			const nodeTypesStore = useNodeTypesStore();
 			const type = 'testTypeWithoutVersion';
@@ -123,6 +114,25 @@ describe('useCanvasOperations', () => {
 
 			expect(result).toBe(expectedDescription);
 		});
+
+		it("should return placeholder node type description if node type doesn't exist", () => {
+			const type = 'nonexistentType';
+
+			const { requireNodeTypeDescription } = useCanvasOperations({ router });
+			const result = requireNodeTypeDescription(type);
+
+			expect(result).toEqual({
+				name: type,
+				displayName: type,
+				description: '',
+				defaults: {},
+				group: [],
+				inputs: [],
+				outputs: [],
+				properties: [],
+				version: 1,
+			});
+		});
 	});
 
 	describe('addNode', () => {

packages/editor-ui/src/composables/useCanvasOperations.ts

@@ -445,16 +445,23 @@ export function useCanvasOperations({ router }: { router: ReturnType<typeof useR
 		historyStore.stopRecordingUndo();
 	}
 
-	function requireNodeTypeDescription(type: INodeUi['type'], version?: INodeUi['typeVersion']) {
-		const nodeTypeDescription = nodeTypesStore.getNodeType(type, version);
-		if (!nodeTypeDescription) {
-			throw new Error(
-				i18n.baseText('nodeView.showMessage.addNodeButton.message', {
-					interpolate: { nodeTypeName: type },
-				}),
-			);
+	function requireNodeTypeDescription(
+		type: INodeUi['type'],
+		version?: INodeUi['typeVersion'],
+	): INodeTypeDescription {
+		return (
+			nodeTypesStore.getNodeType(type, version) ?? {
+				properties: [],
+				displayName: type,
+				name: type,
+				group: [],
+				description: '',
+				version: version ?? 1,
+				defaults: {},
+				inputs: [],
+				outputs: [],
 			}
-		return nodeTypeDescription;
+		);
 	}
 
 	async function addNodes(