feat(core): Add support for pairedItem (beta) (#3012)

* ✨ Add pairedItem support

* 👕 Fix lint issue

* 🐛 Fix resolution in frontend

* 🐛 Fix resolution issue

* 🐛 Fix resolution in frontend

* 🐛 Fix another resolution issue in frontend

* ⚡ Try to automatically add pairedItem data if possible

* ⚡ Cleanup

* ⚡ Display expression errors in editor UI

* 🐛 Fix issue that it did not display errors in production

* 🐛 Fix auto-fix of missing pairedItem data

* 🐛 Fix frontend resolution for not executed nodes

* ⚡ Fail execution on pairedItem resolve issue and display information
about itemIndex and runIndex

* ⚡ Allow that pairedItem is only set to number if runIndex is 0

* ✨ Improve Expression Errors

* ⚡ Remove no longer needed code

* ⚡ Make errors more helpful

* ⚡ Add additional errors

* 👕 Fix lint issue

* ⚡ Add pairedItem support to core nodes

* ⚡ Improve support in Merge-Node

* ⚡ Fix issue with not correctly converted incoming pairedItem data

* 🐛 Fix frontend resolve issue

* 🐛 Fix frontend parameter name display issue

* ⚡ Improve errors

* 👕 Fix lint issue

* ⚡ Improve errors

* ⚡ Make it possible to display parameter name in error messages

* ⚡ Improve error messages

* ⚡ Fix error message

* ⚡ Improve error messages

* ⚡ Add another error message

* ⚡ Simplify

packages/workflow/test/Helpers.ts

@@ -9,6 +9,7 @@ import {
 	ICredentialsEncrypted,
 	ICredentialsHelper,
 	IDataObject,
+	IExecuteData,
 	IExecuteFunctions,
 	IExecuteResponsePromiseData,
 	IExecuteSingleFunctions,
@@ -146,6 +147,7 @@ export function getNodeParameter(
 	mode: WorkflowExecuteMode,
 	timezone: string,
 	additionalKeys: IWorkflowDataProxyAdditionalKeys,
+	executeData: IExecuteData,
 	fallbackValue?: any,
 ): NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[] | object {
 	const nodeType = workflow.nodeTypes.getByNameAndVersion(node.type, node.typeVersion);
@@ -189,6 +191,7 @@ export function getExecuteFunctions(
 	node: INode,
 	itemIndex: number,
 	additionalData: IWorkflowExecuteAdditionalData,
+	executeData: IExecuteData,
 	mode: WorkflowExecuteMode,
 ): IExecuteFunctions {
 	return ((workflow, runExecutionData, connectionInputData, inputData, node) => {
@@ -272,6 +275,9 @@ export function getExecuteFunctions(
 			getTimezone: (): string => {
 				return additionalData.timezone;
 			},
+			getExecuteData: (): IExecuteData => {
+				return executeData;
+			},
 			getWorkflow: () => {
 				return {
 					id: workflow.id,
@@ -291,6 +297,7 @@ export function getExecuteFunctions(
 					mode,
 					additionalData.timezone,
 					{},
+					executeData,
 				);
 				return dataProxy.getDataProxy();
 			},
@@ -375,6 +382,7 @@ export function getExecuteSingleFunctions(
 	node: INode,
 	itemIndex: number,
 	additionalData: IWorkflowExecuteAdditionalData,
+	executeData: IExecuteData,
 	mode: WorkflowExecuteMode,
 ): IExecuteSingleFunctions {
 	return ((workflow, runExecutionData, connectionInputData, inputData, node, itemIndex) => {
@@ -431,6 +439,9 @@ export function getExecuteSingleFunctions(
 			getTimezone: (): string => {
 				return additionalData.timezone;
 			},
+			getExecuteData: (): IExecuteData => {
+				return executeData;
+			},
 			getNodeParameter: (
 				parameterName: string,
 				fallbackValue?: any,
@@ -473,6 +484,7 @@ export function getExecuteSingleFunctions(
 					mode,
 					additionalData.timezone,
 					{},
+					executeData,
 				);
 				return dataProxy.getDataProxy();
 			},

packages/workflow/test/RoutingNode.test.ts

@@ -15,6 +15,7 @@ import {
 	INodeExecuteFunctions,
 	IN8nRequestOperations,
 	INodeCredentialDescription,
+	IExecuteData,
 } from '../src';
 
 import * as Helpers from './Helpers';
@@ -657,6 +658,11 @@ describe('RoutingNode', () => {
 					node,
 					itemIndex,
 					additionalData,
+					{
+						node,
+						data: {},
+						source: null,
+					},
 					mode,
 				);
 
@@ -1636,6 +1642,12 @@ describe('RoutingNode', () => {
 					mode,
 				);
 
+				const executeData = {
+					data: {},
+					node,
+					source: null,
+				} as IExecuteData;
+
 				// @ts-ignore
 				const nodeExecuteFunctions: INodeExecuteFunctions = {
 					getExecuteFunctions: () => {
@@ -1648,6 +1660,7 @@ describe('RoutingNode', () => {
 							node,
 							itemIndex,
 							additionalData,
+							executeData,
 							mode,
 						);
 					},
@@ -1661,6 +1674,7 @@ describe('RoutingNode', () => {
 							node,
 							itemIndex,
 							additionalData,
+							executeData,
 							mode,
 						);
 					},
@@ -1670,6 +1684,7 @@ describe('RoutingNode', () => {
 					inputData,
 					runIndex,
 					nodeType,
+					executeData,
 					nodeExecuteFunctions,
 				);
 

packages/workflow/test/Workflow.test.ts

@@ -1243,6 +1243,7 @@ describe('Workflow', () => {
 										],
 									],
 								},
+								source: [],
 							},
 						],
 					},

packages/workflow/test/WorkflowDataProxy.test.ts

@@ -94,6 +94,7 @@ describe('WorkflowDataProxy', () => {
 									],
 								],
 							},
+							source: [],
 						},
 					],
 					Rename: [
@@ -122,6 +123,7 @@ describe('WorkflowDataProxy', () => {
 									],
 								],
 							},
+							source: [],
 						},
 					],
 				},