refactor(editor): Fix NodeView/Canvas related TS errors (#9581)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>

packages/editor-ui/src/Interface.ts

@@ -136,6 +136,8 @@ export type EndpointStyle = {
 
 export type EndpointMeta = {
 	__meta?: {
+		nodeName: string;
+		nodeId: string;
 		index: number;
 		totalEndpoints: number;
 		endpointLabelLength: number;
@@ -247,7 +249,7 @@ export interface IWorkflowData {
 export interface IWorkflowDataUpdate {
 	id?: string;
 	name?: string;
-	nodes?: Array<INode | IWorkflowTemplateNode>;
+	nodes?: INode[];
 	connections?: IConnections;
 	settings?: IWorkflowSettings;
 	active?: boolean;
@@ -268,7 +270,10 @@ export interface NewWorkflowResponse {
 }
 
 export interface IWorkflowTemplateNode
-	extends Pick<INodeUi, 'name' | 'type' | 'position' | 'parameters' | 'typeVersion' | 'webhookId'> {
+	extends Pick<
+		INodeUi,
+		'name' | 'type' | 'position' | 'parameters' | 'typeVersion' | 'webhookId' | 'id' | 'disabled'
+	> {
 	// The credentials in a template workflow have a different type than in a regular workflow
 	credentials?: IWorkflowTemplateNodeCredentials;
 }
@@ -1926,13 +1931,13 @@ export type NewConnectionInfo = {
 	index: number;
 	eventSource: NodeCreatorOpenSource;
 	connection?: Connection;
-	nodeCreatorView?: string;
+	nodeCreatorView?: NodeFilterType;
 	outputType?: NodeConnectionType;
 	endpointUuid?: string;
 };
 
 export type AIAssistantConnectionInfo = NewConnectionInfo & {
-	stepName: string;
+	stepName?: string;
 };
 
 export type EnterpriseEditionFeatureKey =

packages/editor-ui/src/components/AIAssistantChat/AIAssistantChat.vue

@@ -5,12 +5,11 @@ import ChatComponent from '@n8n/chat/components/Chat.vue';
 import { ChatOptionsSymbol, ChatSymbol } from '@n8n/chat/constants';
 import type { Chat, ChatMessage, ChatOptions } from '@n8n/chat/types';
 import type { Ref } from 'vue';
-import { computed, provide, ref } from 'vue';
+import { computed, provide, ref, onMounted, onBeforeUnmount } from 'vue';
 import QuickReplies from './QuickReplies.vue';
 import { DateTime } from 'luxon';
 import { useAIStore } from '@/stores/ai.store';
 import { chatEventBus } from '@n8n/chat/event-buses';
-import { onMounted } from 'vue';
 import {
 	AI_ASSISTANT_EXPERIMENT_URLS,
 	AI_ASSISTANT_LOCAL_STORAGE_KEY,
@@ -19,7 +18,6 @@ import {
 import { useStorage } from '@/composables/useStorage';
 import { useMessage } from '@/composables/useMessage';
 import { useTelemetry } from '@/composables/useTelemetry';
-import { onBeforeUnmount } from 'vue';
 
 const locale = useI18n();
 const telemetry = useTelemetry();
@@ -93,7 +91,7 @@ const thanksResponses: ChatMessage[] = [
 ];
 
 const initialMessageText = computed(() => {
-	if (latestConnectionInfo.value) {
+	if (latestConnectionInfo.value?.stepName) {
 		return locale.baseText('aiAssistantChat.initialMessage.nextStep', {
 			interpolate: { currentAction: latestConnectionInfo.value.stepName },
 		});

packages/editor-ui/src/components/MainHeader/WorkflowDetails.vue

@@ -54,7 +54,6 @@ import type {
 } from '@/Interface';
 import { useI18n } from '@/composables/useI18n';
 import { useTelemetry } from '@/composables/useTelemetry';
-import type { MessageBoxInputData } from 'element-plus';
 import type { BaseTextKey } from '../../plugins/i18n';
 
 const props = defineProps<{
@@ -385,7 +384,7 @@ async function handleFileImport(): Promise<void> {
 	}
 }
 
-async function onWorkflowMenuSelect(action: string): Promise<void> {
+async function onWorkflowMenuSelect(action: WORKFLOW_MENU_ACTIONS): Promise<void> {
 	switch (action) {
 		case WORKFLOW_MENU_ACTIONS.DUPLICATE: {
 			uiStore.openModalWithData({
@@ -427,7 +426,7 @@ async function onWorkflowMenuSelect(action: string): Promise<void> {
 		}
 		case WORKFLOW_MENU_ACTIONS.IMPORT_FROM_URL: {
 			try {
-				const promptResponse = (await message.prompt(
+				const promptResponse = await message.prompt(
 					locale.baseText('mainSidebar.prompt.workflowUrl') + ':',
 					locale.baseText('mainSidebar.prompt.importWorkflowFromUrl') + ':',
 					{
@@ -436,9 +435,9 @@ async function onWorkflowMenuSelect(action: string): Promise<void> {
 						inputErrorMessage: locale.baseText('mainSidebar.prompt.invalidUrl'),
 						inputPattern: /^http[s]?:\/\/.*\.json$/i,
 					},
-				)) as MessageBoxInputData;
+				);
 
-				if ((promptResponse as unknown as string) === 'cancel') {
+				if (promptResponse.action === 'cancel') {
 					return;
 				}
 

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

@@ -204,8 +204,8 @@ export default function useCanvasMouseSelect() {
 		uiStore.lastSelectedNode = null;
 		uiStore.lastSelectedNodeOutputIndex = null;
 
-		canvasStore.lastSelectedConnection = null;
 		canvasStore.newNodeInsertPosition = null;
+		canvasStore.setLastSelectedConnection(undefined);
 	}
 
 	const instance = computed(() => canvasStore.jsPlumbInstance);

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

@@ -70,7 +70,7 @@ export function useCanvasPanning(
 	/**
 	 * Ends the panning process and removes the mousemove event listener
 	 */
-	function onMouseUp(_: MouseEvent) {
+	function onMouseUp() {
 		if (!uiStore.nodeViewMoveInProgress) {
 			// If it is not active return directly.
 			// Else normal node dragging will not work.
@@ -89,7 +89,7 @@ export function useCanvasPanning(
 	 * Handles the actual movement of the canvas during a mouse drag,
 	 * updating the position based on the current mouse position
 	 */
-	function onMouseMove(e: MouseEvent) {
+	function onMouseMove(e: MouseEvent | TouchEvent) {
 		const element = unref(elementRef);
 		if (e.target && !(element === e.target || element?.contains(e.target as Node))) {
 			return;
@@ -100,11 +100,11 @@ export function useCanvasPanning(
 		}
 
 		// Signal that moving canvas is active if middle button is pressed and mouse is moved
-		if (e.buttons === MOUSE_EVENT_BUTTONS.MIDDLE) {
+		if (e instanceof MouseEvent && e.buttons === MOUSE_EVENT_BUTTONS.MIDDLE) {
 			uiStore.nodeViewMoveInProgress = true;
 		}
 
-		if (e.buttons === MOUSE_EVENT_BUTTONS.NONE) {
+		if (e instanceof MouseEvent && e.buttons === MOUSE_EVENT_BUTTONS.NONE) {
 			// Mouse button is not pressed anymore so stop selection mode
 			// Happens normally when mouse leave the view pressed and then
 			// comes back unpressed.

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

@@ -1,12 +1,19 @@
-import type { ElMessageBoxOptions } from 'element-plus';
+import type { ElMessageBoxOptions, Action, MessageBoxInputData } from 'element-plus';
 import { ElMessageBox as MessageBox } from 'element-plus';
 
 export type MessageBoxConfirmResult = 'confirm' | 'cancel';
 
 export function useMessage() {
-	const handleCancelOrClose = (e: unknown) => {
+	const handleCancelOrClose = (e: Action | Error): Action => {
 		if (e instanceof Error) throw e;
-		else return e;
+
+		return e;
+	};
+
+	const handleCancelOrClosePrompt = (e: Error | Action): MessageBoxInputData => {
+		if (e instanceof Error) throw e;
+
+		return { value: '', action: e };
 	};
 
 	async function alert(
@@ -15,7 +22,7 @@ export function useMessage() {
 		config?: ElMessageBoxOptions,
 	) {
 		const resolvedConfig = {
-			...(config || (typeof configOrTitle === 'object' ? configOrTitle : {})),
+			...(config ?? (typeof configOrTitle === 'object' ? configOrTitle : {})),
 			cancelButtonClass: 'btn--cancel',
 			confirmButtonClass: 'btn--confirm',
 		};
@@ -32,24 +39,23 @@ export function useMessage() {
 		message: ElMessageBoxOptions['message'],
 		configOrTitle?: string | ElMessageBoxOptions,
 		config?: ElMessageBoxOptions,
-	): Promise<MessageBoxConfirmResult> {
+	) {
 		const resolvedConfig = {
-			...(config || (typeof configOrTitle === 'object' ? configOrTitle : {})),
+			...(config ?? (typeof configOrTitle === 'object' ? configOrTitle : {})),
 			cancelButtonClass: 'btn--cancel',
 			confirmButtonClass: 'btn--confirm',
 			distinguishCancelAndClose: true,
-			showClose: config?.showClose || false,
+			showClose: config?.showClose ?? false,
 			closeOnClickModal: false,
 		};
 
 		if (typeof configOrTitle === 'string') {
-			return await (MessageBox.confirm(message, configOrTitle, resolvedConfig).catch(
+			return await MessageBox.confirm(message, configOrTitle, resolvedConfig).catch(
 				handleCancelOrClose,
-			) as unknown as Promise<MessageBoxConfirmResult>);
+			);
 		}
-		return await (MessageBox.confirm(message, resolvedConfig).catch(
+
-			handleCancelOrClose,
+		return await MessageBox.confirm(message, resolvedConfig).catch(handleCancelOrClose);
-		) as unknown as Promise<MessageBoxConfirmResult>);
 	}
 
 	async function prompt(
@@ -58,17 +64,17 @@ export function useMessage() {
 		config?: ElMessageBoxOptions,
 	) {
 		const resolvedConfig = {
-			...(config || (typeof configOrTitle === 'object' ? configOrTitle : {})),
+			...(config ?? (typeof configOrTitle === 'object' ? configOrTitle : {})),
 			cancelButtonClass: 'btn--cancel',
 			confirmButtonClass: 'btn--confirm',
 		};
 
 		if (typeof configOrTitle === 'string') {
 			return await MessageBox.prompt(message, configOrTitle, resolvedConfig).catch(
-				handleCancelOrClose,
+				handleCancelOrClosePrompt,
 			);
 		}
-		return await MessageBox.prompt(message, resolvedConfig).catch(handleCancelOrClose);
+		return await MessageBox.prompt(message, resolvedConfig).catch(handleCancelOrClosePrompt);
 	}
 
 	return {

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

@@ -39,6 +39,7 @@ import type {
 	IWorkflowData,
 	IWorkflowDataUpdate,
 	IWorkflowDb,
+	IWorkflowTemplateNode,
 	TargetItem,
 	XYPosition,
 } from '@/Interface';
@@ -307,7 +308,11 @@ function getNodes(): INodeUi[] {
 }
 
 // Returns a workflow instance.
-function getWorkflow(nodes: INodeUi[], connections: IConnections, copyData?: boolean): Workflow {
+function getWorkflow(
+	nodes: Array<INodeUi | IWorkflowTemplateNode>,
+	connections: IConnections,
+	copyData?: boolean,
+): Workflow {
 	return useWorkflowsStore().getWorkflow(nodes, connections, copyData);
 }
 

packages/editor-ui/src/constants.ts

@@ -398,7 +398,6 @@ export const ROLE_OTHER = 'other';
 /** END OF PERSONALIZATION SURVEY */
 
 export const MODAL_CANCEL = 'cancel';
-export const MODAL_CLOSE = 'close';
 export const MODAL_CONFIRM = 'confirm';
 
 export const VALID_EMAIL_REGEX =

packages/editor-ui/src/jsplumb.d.ts

@@ -0,0 +1,34 @@
+import type { Connection, Endpoint, EndpointRepresentation, AbstractConnector, Overlay } from '@jsplumb/core';
+import type { NodeConnectionType } from 'n8n-workflow';
+
+declare module '@jsplumb/core' {
+	interface EndpointRepresentation {
+		canvas: HTMLElement;
+		scope: NodeConnectionType;
+	}
+	interface AbstractConnector {
+		canvas: HTMLElement;
+		overrideTargetEndpoint: Endpoint;
+	}
+	interface Overlay {
+		canvas: HTMLElement;
+	}
+	interface Connection {
+		__meta: {
+			sourceOutputIndex: number;
+			targetNodeName: string;
+			targetOutputIndex: number;
+			sourceNodeName: string;
+		};
+	}
+	interface Endpoint {
+		scope: NodeConnectionType;
+		__meta: {
+			nodeName: string;
+			nodeId: string;
+			index: number;
+			totalEndpoints: number;
+			endpointLabelLength: number;
+		};
+	};
+}

packages/editor-ui/src/router.ts

@@ -165,7 +165,7 @@ export const routes = [
 			// Templates view remembers it's scroll position on back
 			scrollOffset: 0,
 			telemetry: {
-				getProperties(route: RouteLocation) {
+				getProperties() {
 					const templatesStore = useTemplatesStore();
 					return {
 						wf_template_repo_session_id: templatesStore.currentSessionId,
@@ -474,7 +474,7 @@ export const routes = [
 					},
 					telemetry: {
 						pageCategory: 'settings',
-						getProperties(route: RouteLocation) {
+						getProperties() {
 							return {
 								feature: 'usage',
 							};
@@ -492,7 +492,7 @@ export const routes = [
 					middleware: ['authenticated'],
 					telemetry: {
 						pageCategory: 'settings',
-						getProperties(route: RouteLocation) {
+						getProperties() {
 							return {
 								feature: 'personal',
 							};
@@ -515,7 +515,7 @@ export const routes = [
 					},
 					telemetry: {
 						pageCategory: 'settings',
-						getProperties(route: RouteLocation) {
+						getProperties() {
 							return {
 								feature: 'users',
 							};
@@ -533,7 +533,7 @@ export const routes = [
 					middleware: ['authenticated'],
 					telemetry: {
 						pageCategory: 'settings',
-						getProperties(route: RouteLocation) {
+						getProperties() {
 							return {
 								feature: 'api',
 							};
@@ -556,7 +556,7 @@ export const routes = [
 					},
 					telemetry: {
 						pageCategory: 'settings',
-						getProperties(route: RouteLocation) {
+						getProperties() {
 							return {
 								feature: 'environments',
 							};
@@ -579,7 +579,7 @@ export const routes = [
 					},
 					telemetry: {
 						pageCategory: 'settings',
-						getProperties(route: RouteLocation) {
+						getProperties() {
 							return {
 								feature: 'external-secrets',
 							};
@@ -606,7 +606,7 @@ export const routes = [
 					},
 					telemetry: {
 						pageCategory: 'settings',
-						getProperties(route: RouteLocation) {
+						getProperties() {
 							return {
 								feature: 'sso',
 							};

packages/editor-ui/src/shims.d.ts

@@ -22,6 +22,7 @@ declare global {
 		BASE_PATH: string;
 		REST_ENDPOINT: string;
 		n8nExternalHooks?: PartialDeep<ExternalHooks>;
+		preventNodeViewBeforeUnload?: boolean;
 	}
 
 	namespace JSX {

packages/editor-ui/src/stores/canvas.store.ts

@@ -52,7 +52,8 @@ export const useCanvasStore = defineStore('canvas', () => {
 
 	const jsPlumbInstanceRef = ref<BrowserJsPlumbInstance>();
 	const isDragging = ref<boolean>(false);
-	const lastSelectedConnection = ref<Connection | null>(null);
+	const lastSelectedConnection = ref<Connection>();
+
 	const newNodeInsertPosition = ref<XYPosition | null>(null);
 
 	const nodes = computed<INodeUi[]>(() => workflowStore.allNodes);
@@ -68,6 +69,9 @@ export const useCanvasStore = defineStore('canvas', () => {
 	const nodeViewScale = ref<number>(1);
 	const canvasAddButtonPosition = ref<XYPosition>([1, 1]);
 	const readOnlyEnv = computed(() => sourceControlStore.preferences.branchReadOnly);
+	const lastSelectedConnectionComputed = computed<Connection | undefined>(
+		() => lastSelectedConnection.value,
+	);
 
 	watch(readOnlyEnv, (readOnly) => {
 		if (jsPlumbInstanceRef.value) {
@@ -75,6 +79,10 @@ export const useCanvasStore = defineStore('canvas', () => {
 		}
 	});
 
+	const setLastSelectedConnection = (connection: Connection | undefined) => {
+		lastSelectedConnection.value = connection;
+	};
+
 	const setRecenteredCanvasAddButtonPosition = (offset?: XYPosition) => {
 		const position = getMidCanvasPosition(nodeViewScale.value, offset ?? [0, 0]);
 
@@ -314,11 +322,12 @@ export const useCanvasStore = defineStore('canvas', () => {
 		isDemo,
 		nodeViewScale,
 		canvasAddButtonPosition,
-		lastSelectedConnection,
 		newNodeInsertPosition,
 		jsPlumbInstance,
 		isLoading: loadingService.isLoading,
 		aiNodes,
+		lastSelectedConnection: lastSelectedConnectionComputed,
+		setLastSelectedConnection,
 		startLoading: loadingService.startLoading,
 		setLoadingText: loadingService.setLoadingText,
 		stopLoading: loadingService.stopLoading,

packages/editor-ui/src/stores/workflows.store.ts

@@ -30,6 +30,7 @@ import type {
 	NodeMetadataMap,
 	WorkflowMetadata,
 	IExecutionFlattedResponse,
+	IWorkflowTemplateNode,
 } from '@/Interface';
 import { defineStore } from 'pinia';
 import type {
@@ -312,9 +313,31 @@ export const useWorkflowsStore = defineStore(STORES.WORKFLOWS, () => {
 		setNodeValue({ name: node.name, key: 'position', value: position });
 	}
 
+	function convertTemplateNodeToNodeUi(node: IWorkflowTemplateNode): INodeUi {
+		const filteredCredentials = Object.keys(node.credentials ?? {}).reduce<INodeCredentials>(
+			(credentials, curr) => {
+				const credential = node?.credentials?.[curr];
+				if (!credential || typeof credential === 'string') {
+					return credentials;
+				}
+
+				credentials[curr] = credential;
+
+				return credentials;
+			},
+			{},
+		);
+
+		return {
+			...node,
+			credentials: filteredCredentials,
+		};
+	}
+
 	function getWorkflow(nodes: INodeUi[], connections: IConnections, copyData?: boolean): Workflow {
 		const nodeTypes = getNodeTypes();
 		let cachedWorkflowId: string | undefined = workflowId.value;
+
 		if (cachedWorkflowId && cachedWorkflowId === PLACEHOLDER_EMPTY_WORKFLOW_ID) {
 			cachedWorkflowId = undefined;
 		}
@@ -327,7 +350,6 @@ export const useWorkflowsStore = defineStore(STORES.WORKFLOWS, () => {
 			active: false,
 			nodeTypes,
 			settings: workflowSettings.value,
-			// @ts-ignore
 			pinData: pinnedWorkflowData.value,
 		});
 
@@ -1520,6 +1542,7 @@ export const useWorkflowsStore = defineStore(STORES.WORKFLOWS, () => {
 		getPinDataSize,
 		getNodeTypes,
 		getNodes,
+		convertTemplateNodeToNodeUi,
 		getWorkflow,
 		getCurrentWorkflow,
 		getWorkflowFromUrl,

packages/editor-ui/src/types/externalHooks.ts

@@ -25,6 +25,7 @@ import type {
 	INodeUpdatePropertiesInformation,
 	IPersonalizationLatestVersion,
 	IWorkflowDb,
+	IWorkflowTemplateNode,
 	NodeFilterType,
 } from '@/Interface';
 import type { ComponentPublicInstance } from 'vue/dist/vue';
@@ -68,6 +69,7 @@ export interface ExternalHooks {
 		addNodeButton: Array<ExternalHooksMethod<{ nodeTypeName: string }>>;
 		onRunNode: Array<ExternalHooksMethod<ITelemetryTrackProperties>>;
 		onRunWorkflow: Array<ExternalHooksMethod<ITelemetryTrackProperties>>;
+		onOpenChat: Array<ExternalHooksMethod<ITelemetryTrackProperties>>;
 	};
 	main: {
 		routeChange: Array<ExternalHooksMethod<{ to: RouteLocation; from: RouteLocation }>>;
@@ -255,7 +257,7 @@ export interface ExternalHooks {
 			ExternalHooksMethod<{
 				templateId: string;
 				templateName: string;
-				workflow: { nodes: INodeUi[]; connections: IConnections };
+				workflow: { nodes: INodeUi[] | IWorkflowTemplateNode[]; connections: IConnections };
 			}>
 		>;
 	};

packages/editor-ui/src/utils/canvasUtilsV2.spec.ts

@@ -3,7 +3,7 @@ import {
 	mapLegacyEndpointsToCanvasConnectionPort,
 	getUniqueNodeName,
 } from '@/utils/canvasUtilsV2';
-import type { IConnections, INodeTypeDescription } from 'n8n-workflow';
+import { NodeConnectionType, type IConnections, type INodeTypeDescription } from 'n8n-workflow';
 import type { CanvasConnection } from '@/types';
 import type { INodeUi } from '@/Interface';
 
@@ -15,7 +15,7 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 	it('should map legacy connections to canvas connections', () => {
 		const legacyConnections: IConnections = {
 			'Node A': {
-				main: [[{ node: 'Node B', type: 'main', index: 0 }]],
+				main: [[{ node: 'Node B', type: NodeConnectionType.Main, index: 0 }]],
 			},
 		};
 		const nodes: INodeUi[] = [
@@ -53,11 +53,11 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node A',
 					source: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
@@ -67,7 +67,7 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 	it('should return empty array when no matching nodes found', () => {
 		const legacyConnections: IConnections = {
 			'Node A': {
-				main: [[{ node: 'Node B', type: 'main', index: 0 }]],
+				main: [[{ node: 'Node B', type: NodeConnectionType.Main, index: 0 }]],
 			},
 		};
 		const nodes: INodeUi[] = [];
@@ -113,8 +113,8 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 		const legacyConnections: IConnections = {
 			'Node A': {
 				main: [
-					[{ node: 'Node B', type: 'main', index: 0 }],
+					[{ node: 'Node B', type: NodeConnectionType.Main, index: 0 }],
-					[{ node: 'Node B', type: 'main', index: 1 }],
+					[{ node: 'Node B', type: NodeConnectionType.Main, index: 1 }],
 				],
 			},
 		};
@@ -153,11 +153,11 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node A',
 					source: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
@@ -171,11 +171,11 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node A',
 					source: {
 						index: 1,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 1,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
@@ -186,8 +186,8 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 		const legacyConnections: IConnections = {
 			'Node A': {
 				main: [
-					[{ node: 'Node B', type: 'main', index: 0 }],
+					[{ node: 'Node B', type: NodeConnectionType.Main, index: 0 }],
-					[{ node: 'Node C', type: 'main', index: 0 }],
+					[{ node: 'Node C', type: NodeConnectionType.Main, index: 0 }],
 				],
 			},
 		};
@@ -234,11 +234,11 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node A',
 					source: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
@@ -252,11 +252,11 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node A',
 					source: {
 						index: 1,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
@@ -266,11 +266,13 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 	it('should map complex node setup with mixed inputs and outputs', () => {
 		const legacyConnections: IConnections = {
 			'Node A': {
-				main: [[{ node: 'Node B', type: 'main', index: 0 }]],
+				main: [[{ node: 'Node B', type: NodeConnectionType.Main, index: 0 }]],
-				other: [[{ node: 'Node C', type: 'other', index: 1 }]],
+				[NodeConnectionType.AiMemory]: [
+					[{ node: 'Node C', type: NodeConnectionType.AiMemory, index: 1 }],
+				],
 			},
 			'Node B': {
-				main: [[{ node: 'Node C', type: 'main', index: 0 }]],
+				main: [[{ node: 'Node C', type: NodeConnectionType.Main, index: 0 }]],
 			},
 		};
 		const nodes: INodeUi[] = [
@@ -316,29 +318,29 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node A',
 					source: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
 			{
-				id: '[1/other/0][3/other/1]',
+				id: `[1/${NodeConnectionType.AiMemory}/0][3/${NodeConnectionType.AiMemory}/1]`,
 				source: '1',
 				target: '3',
-				sourceHandle: 'outputs/other/0',
+				sourceHandle: `outputs/${NodeConnectionType.AiMemory}/0`,
-				targetHandle: 'inputs/other/1',
+				targetHandle: `inputs/${NodeConnectionType.AiMemory}/1`,
 				data: {
 					fromNodeName: 'Node A',
 					source: {
 						index: 0,
-						type: 'other',
+						type: NodeConnectionType.AiMemory,
 					},
 					target: {
 						index: 1,
-						type: 'other',
+						type: NodeConnectionType.AiMemory,
 					},
 				},
 			},
@@ -352,11 +354,11 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node B',
 					source: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
@@ -367,8 +369,8 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 		const legacyConnections: IConnections = {
 			'Node A': {
 				main: [
-					[{ node: 'Nonexistent Node', type: 'main', index: 0 }],
+					[{ node: 'Nonexistent Node', type: NodeConnectionType.Main, index: 0 }],
-					[{ node: 'Node B', type: 'main', index: 0 }],
+					[{ node: 'Node B', type: NodeConnectionType.Main, index: 0 }],
 				],
 			},
 		};
@@ -407,11 +409,11 @@ describe('mapLegacyConnectionsToCanvasConnections', () => {
 					fromNodeName: 'Node A',
 					source: {
 						index: 1,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 					target: {
 						index: 0,
-						type: 'main',
+						type: NodeConnectionType.Main,
 					},
 				},
 			},
@@ -435,66 +437,69 @@ describe('mapLegacyEndpointsToCanvasConnectionPort', () => {
 	});
 
 	it('should map string endpoints correctly', () => {
-		const endpoints: INodeTypeDescription['inputs'] = ['main', 'ai_tool'];
+		const endpoints: INodeTypeDescription['inputs'] = [
+			NodeConnectionType.Main,
+			NodeConnectionType.AiTool,
+		];
 		const result = mapLegacyEndpointsToCanvasConnectionPort(endpoints);
 
 		expect(result).toEqual([
-			{ type: 'main', index: 0, label: undefined },
+			{ type: NodeConnectionType.Main, index: 0, label: undefined },
-			{ type: 'ai_tool', index: 0, label: undefined },
+			{ type: NodeConnectionType.AiTool, index: 0, label: undefined },
 		]);
 	});
 
 	it('should map object endpoints correctly', () => {
 		const endpoints: INodeTypeDescription['inputs'] = [
-			{ type: 'main', displayName: 'Main Input' },
+			{ type: NodeConnectionType.Main, displayName: 'Main Input' },
-			{ type: 'ai_tool', displayName: 'AI Tool', required: true },
+			{ type: NodeConnectionType.AiTool, displayName: 'AI Tool', required: true },
 		];
 		const result = mapLegacyEndpointsToCanvasConnectionPort(endpoints);
 
 		expect(result).toEqual([
-			{ type: 'main', index: 0, label: 'Main Input' },
+			{ type: NodeConnectionType.Main, index: 0, label: 'Main Input' },
-			{ type: 'ai_tool', index: 0, label: 'AI Tool', required: true },
+			{ type: NodeConnectionType.AiTool, index: 0, label: 'AI Tool', required: true },
 		]);
 	});
 
 	it('should map mixed string and object endpoints correctly', () => {
 		const endpoints: INodeTypeDescription['inputs'] = [
-			'main',
+			NodeConnectionType.Main,
-			{ type: 'ai_tool', displayName: 'AI Tool' },
+			{ type: NodeConnectionType.AiTool, displayName: 'AI Tool' },
-			'main',
+			NodeConnectionType.Main,
 		];
 		const result = mapLegacyEndpointsToCanvasConnectionPort(endpoints);
 
 		expect(result).toEqual([
-			{ type: 'main', index: 0, label: undefined },
+			{ type: NodeConnectionType.Main, index: 0, label: undefined },
-			{ type: 'ai_tool', index: 0, label: 'AI Tool' },
+			{ type: NodeConnectionType.AiTool, index: 0, label: 'AI Tool' },
-			{ type: 'main', index: 1, label: undefined },
+			{ type: NodeConnectionType.Main, index: 1, label: undefined },
 		]);
 	});
 
 	it('should handle multiple same type object endpoints', () => {
 		const endpoints: INodeTypeDescription['inputs'] = [
-			{ type: 'main', displayName: 'Main Input' },
+			{ type: NodeConnectionType.Main, displayName: 'Main Input' },
-			{ type: 'main', displayName: 'Secondary Main Input' },
+			{ type: NodeConnectionType.Main, displayName: 'Secondary Main Input' },
 		];
 		const result = mapLegacyEndpointsToCanvasConnectionPort(endpoints);
 
 		expect(result).toEqual([
-			{ type: 'main', index: 0, label: 'Main Input' },
+			{ type: NodeConnectionType.Main, index: 0, label: 'Main Input' },
-			{ type: 'main', index: 1, label: 'Secondary Main Input' },
+			{ type: NodeConnectionType.Main, index: 1, label: 'Secondary Main Input' },
 		]);
 	});
 
 	it('should map required and non-required endpoints correctly', () => {
 		const endpoints: INodeTypeDescription['inputs'] = [
-			{ type: 'main', displayName: 'Main Input', required: true },
+			{ type: NodeConnectionType.Main, displayName: 'Main Input', required: true },
-			{ type: 'ai_tool', displayName: 'Optional Tool', required: false },
+			{ type: NodeConnectionType.AiTool, displayName: 'Optional Tool', required: false },
 		];
 		const result = mapLegacyEndpointsToCanvasConnectionPort(endpoints);
 
 		expect(result).toEqual([
-			{ type: 'main', index: 0, label: 'Main Input', required: true },
+			{ type: NodeConnectionType.Main, index: 0, label: 'Main Input', required: true },
-			{ type: 'ai_tool', index: 0, label: 'Optional Tool' },
+			{ type: NodeConnectionType.AiTool, index: 0, label: 'Optional Tool' },
 		]);
 	});
 });

packages/editor-ui/src/utils/testData/templateTestData.ts

@@ -1,6 +1,7 @@
 // eslint-disable-next-line import/no-extraneous-dependencies
 import { faker } from '@faker-js/faker/locale/en';
 import type { ITemplatesWorkflowFull, IWorkflowTemplateNode } from '@/Interface';
+import { NodeConnectionType } from 'n8n-workflow';
 
 export const newWorkflowTemplateNode = ({
 	type,
@@ -26,6 +27,7 @@ export const fullShopifyTelegramTwitterTemplate = {
 	workflow: {
 		nodes: [
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991cc1',
 				name: 'Twitter',
 				type: 'n8n-nodes-base.twitter',
 				position: [720, -220],
@@ -39,6 +41,7 @@ export const fullShopifyTelegramTwitterTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991dd3',
 				name: 'Telegram',
 				type: 'n8n-nodes-base.telegram',
 				position: [720, -20],
@@ -53,6 +56,7 @@ export const fullShopifyTelegramTwitterTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991dd2',
 				name: 'product created',
 				type: 'n8n-nodes-base.shopifyTrigger',
 				position: [540, -110],
@@ -72,12 +76,12 @@ export const fullShopifyTelegramTwitterTemplate = {
 					[
 						{
 							node: 'Twitter',
-							type: 'main',
+							type: NodeConnectionType.Main,
 							index: 0,
 						},
 						{
 							node: 'Telegram',
-							type: 'main',
+							type: NodeConnectionType.Main,
 							index: 0,
 						},
 					],
@@ -195,6 +199,7 @@ export const fullSaveEmailAttachmentsToNextCloudTemplate = {
 	workflow: {
 		nodes: [
 			{
+				id: 'd65f8060-0196-430a-923c-57f8389911f3',
 				name: 'IMAP Email',
 				type: 'n8n-nodes-base.emailReadImap',
 				position: [240, 420],
@@ -206,6 +211,7 @@ export const fullSaveEmailAttachmentsToNextCloudTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991gg2',
 				name: 'Nextcloud',
 				type: 'n8n-nodes-base.nextCloud',
 				position: [940, 420],
@@ -217,6 +223,7 @@ export const fullSaveEmailAttachmentsToNextCloudTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991ddh',
 				name: 'Map each attachment',
 				type: 'n8n-nodes-base.function',
 				position: [620, 420],
@@ -228,8 +235,12 @@ export const fullSaveEmailAttachmentsToNextCloudTemplate = {
 			},
 		],
 		connections: {
-			'IMAP Email': { main: [[{ node: 'Map each attachment', type: 'main', index: 0 }]] },
+			'IMAP Email': {
-			'Map each attachment': { main: [[{ node: 'Nextcloud', type: 'main', index: 0 }]] },
+				main: [[{ node: 'Map each attachment', type: NodeConnectionType.Main, index: 0 }]],
+			},
+			'Map each attachment': {
+				main: [[{ node: 'Nextcloud', type: NodeConnectionType.Main, index: 0 }]],
+			},
 		},
 	},
 	workflowInfo: {
@@ -303,6 +314,7 @@ export const fullCreateApiEndpointTemplate = {
 	workflow: {
 		nodes: [
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991dd1',
 				name: 'Webhook',
 				type: 'n8n-nodes-base.webhook',
 				position: [375, 115],
@@ -315,6 +327,7 @@ export const fullCreateApiEndpointTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991dd9',
 				name: 'Note1',
 				type: 'n8n-nodes-base.stickyNote',
 				position: [355, -25],
@@ -327,6 +340,7 @@ export const fullCreateApiEndpointTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991dd5',
 				name: 'Respond to Webhook',
 				type: 'n8n-nodes-base.respondToWebhook',
 				position: [815, 115],
@@ -339,6 +353,7 @@ export const fullCreateApiEndpointTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991df1',
 				name: 'Create URL string',
 				type: 'n8n-nodes-base.set',
 				position: [595, 115],
@@ -358,6 +373,7 @@ export const fullCreateApiEndpointTemplate = {
 				typeVersion: 1,
 			},
 			{
+				id: 'd65f8060-0196-430a-923c-57f838991dbb',
 				name: 'Note3',
 				type: 'n8n-nodes-base.stickyNote',
 				position: [355, 275],
@@ -371,8 +387,10 @@ export const fullCreateApiEndpointTemplate = {
 			},
 		],
 		connections: {
-			Webhook: { main: [[{ node: 'Create URL string', type: 'main', index: 0 }]] },
+			Webhook: { main: [[{ node: 'Create URL string', type: NodeConnectionType.Main, index: 0 }]] },
-			'Create URL string': { main: [[{ node: 'Respond to Webhook', type: 'main', index: 0 }]] },
+			'Create URL string': {
+				main: [[{ node: 'Respond to Webhook', type: NodeConnectionType.Main, index: 0 }]],
+			},
 		},
 	},
 	lastUpdatedBy: 1,

packages/editor-ui/src/utils/typeGuards.ts

@@ -6,6 +6,8 @@ import type {
 } from 'n8n-workflow';
 import { nodeConnectionTypes } from 'n8n-workflow';
 import type { ICredentialsResponse, NewCredentialsModal } from '@/Interface';
+import type { jsPlumbDOMElement } from '@jsplumb/browser-ui';
+import type { Connection } from '@jsplumb/core';
 
 /*
 	Type guards used in editor-ui project
@@ -46,10 +48,14 @@ export const isResourceMapperValue = (value: unknown): value is string | number
 	return ['string', 'number', 'boolean'].includes(typeof value);
 };
 
-export const isJSPlumbEndpointElement = (element: Node): element is HTMLElement => {
+export const isJSPlumbEndpointElement = (element: Node): element is jsPlumbDOMElement => {
 	return 'jtk' in element && 'endpoint' in (element.jtk as object);
 };
 
+export const isJSPlumbConnection = (connection: unknown): connection is Connection => {
+	return connection !== null && typeof connection === 'object' && 'connector' in connection;
+};
+
 export function isDateObject(date: unknown): date is Date {
 	return (
 		!!date && Object.prototype.toString.call(date) === '[object Date]' && !isNaN(date as number)

packages/editor-ui/src/views/NodeView.v2.vue

@@ -42,6 +42,7 @@ import { useExternalSecretsStore } from '@/stores/externalSecrets.ee.store';
 import { useRootStore } from '@/stores/n8nRoot.store';
 import { useCollaborationStore } from '@/stores/collaboration.store';
 import { getUniqueNodeName } from '@/utils/canvasUtilsV2';
+import { isValidNodeConnectionType } from '@/utils/typeGuards';
 
 const NodeCreation = defineAsyncComponent(
 	async () => await import('@/components/Node/NodeCreation.vue'),
@@ -217,13 +218,17 @@ function onCreateNodeConnection(connection: Connection) {
 	const sourceNodeId = connection.source;
 	const sourceNode = workflowsStore.getNodeById(sourceNodeId);
 	const sourceNodeName = sourceNode?.name ?? '';
-	const [, sourceType, sourceIndex] = (connection.sourceHandle ?? '').split('/');
+	const [, sourceType, sourceIndex] = (connection.sourceHandle ?? '')
+		.split('/')
+		.filter(isValidNodeConnectionType);
 
 	// Input
 	const targetNodeId = connection.target;
 	const targetNode = workflowsStore.getNodeById(targetNodeId);
 	const targetNodeName = targetNode?.name ?? '';
-	const [, targetType, targetIndex] = (connection.targetHandle ?? '').split('/');
+	const [, targetType, targetIndex] = (connection.targetHandle ?? '')
+		.split('/')
+		.filter(isValidNodeConnectionType);
 
 	if (sourceNode && targetNode && !checkIfNodeConnectionIsAllowed(sourceNode, targetNode)) {
 		return;
@@ -248,7 +253,7 @@ function onCreateNodeConnection(connection: Connection) {
 }
 
 // @TODO Figure out a way to improve this
-function checkIfNodeConnectionIsAllowed(sourceNode: INodeUi, targetNode: INodeUi): boolean {
+function checkIfNodeConnectionIsAllowed(_sourceNode: INodeUi, _targetNode: INodeUi): boolean {
 	// const targetNodeType = nodeTypesStore.getNodeType(
 	// 	targetNode.type,
 	// 	targetNode.typeVersion,
@@ -341,7 +346,7 @@ async function onAddNodes(
 ) {
 	let currentPosition = position;
 	for (const { type, name, position: nodePosition, isAutoAdd, openDetail } of nodes) {
-		const node = await addNode(
+		const _node = await addNode(
 			{
 				name,
 				type,
@@ -407,7 +412,7 @@ type AddNodeOptions = {
 	isAutoAdd?: boolean;
 };
 
-async function addNode(node: AddNodeData, options: AddNodeOptions): Promise<INodeUi | undefined> {
+async function addNode(node: AddNodeData, _options: AddNodeOptions): Promise<INodeUi | undefined> {
 	if (!checkIfEditingIsAllowed()) {
 		return;
 	}
@@ -663,11 +668,11 @@ async function createNodeWithDefaultCredentials(node: Partial<INodeUi>) {
  * @TODO Probably not needed and can be merged into addNode
  */
 async function injectNode(
-	nodeTypeName: string,
+	_nodeTypeName: string,
-	options: AddNodeOptions = {},
+	_options: AddNodeOptions = {},
-	showDetail = true,
+	_showDetail = true,
-	trackHistory = false,
+	_trackHistory = false,
-	isAutoAdd = false,
+	_isAutoAdd = false,
 ) {
 	// const nodeTypeData: INodeTypeDescription | null =
 	// 	this.nodeTypesStore.getNodeType(nodeTypeName);

packages/editor-ui/src/views/SettingsView.vue

@@ -25,7 +25,7 @@ const SettingsView = defineComponent({
 	components: {
 		SettingsSidebar,
 	},
-	beforeRouteEnter(to, from, next) {
+	beforeRouteEnter(_to, from, next) {
 		next((vm) => {
 			(vm as unknown as InstanceType<typeof SettingsView>).previousRoute = from;
 		});

packages/editor-ui/src/views/WorkflowOnboardingView.vue

@@ -29,7 +29,7 @@ const openWorkflowTemplate = async (templateId: string) => {
 		const workflow = await workflowsStore.createNewWorkflow({
 			name,
 			connections: template.workflow.connections,
-			nodes: template.workflow.nodes,
+			nodes: template.workflow.nodes.map(workflowsStore.convertTemplateNodeToNodeUi),
 			pinData: template.workflow.pinData,
 			settings: template.workflow.settings,
 			meta: {

packages/workflow/src/Interfaces.ts

@@ -68,7 +68,7 @@ export interface IConnection {
 	node: string;
 
 	// The type of the input on destination node (for example "main")
-	type: string;
+	type: NodeConnectionType;
 
 	// The output/input-index of destination node (if node has multiple inputs/outputs of the same type)
 	index: number;

packages/workflow/src/Workflow.ts

@@ -168,7 +168,8 @@ export class Workflow {
 			if (!connections.hasOwnProperty(sourceNode)) {
 				continue;
 			}
-			for (const type in connections[sourceNode]) {
+
+			for (const type of Object.keys(connections[sourceNode]) as NodeConnectionType[]) {
 				if (!connections[sourceNode].hasOwnProperty(type)) {
 					continue;
 				}