refactor(core): Remove NodeExecutionOutput. Add execution hints directly to the context (#13111)

packages/nodes-base/nodes/Transform/Aggregate/Aggregate.node.ts

@@ -11,7 +11,6 @@ import {
 	type IPairedItemData,
 	NodeConnectionType,
 	type NodeExecutionHint,
-	NodeExecutionOutput,
 } from 'n8n-workflow';
 
 import { addBinariesToItem } from './utils';
@@ -432,7 +431,9 @@ export class Aggregate implements INodeType {
 				}
 			}
 
-			if (hints.length) return new NodeExecutionOutput([[returnData]], hints);
+			if (hints.length) {
+				this.addExecutionHints(...hints);
+			}
 		}
 
 		return [[returnData]];

packages/nodes-base/nodes/Transform/RemoveDuplicates/v2/RemoveDuplicatesV2.node.ts

@@ -1,9 +1,4 @@
-import {
-	NodeConnectionType,
-	NodeExecutionOutput,
-	NodeOperationError,
-	tryToParseDateTime,
-} from 'n8n-workflow';
+import { NodeConnectionType, NodeOperationError, tryToParseDateTime } from 'n8n-workflow';
 import type {
 	INodeTypeBaseDescription,
 	IExecuteFunctions,
@@ -126,13 +121,12 @@ export class RemoveDuplicatesV2 implements INodeType {
 						);
 
 						if (maxEntriesNum > 0 && processedDataCount / maxEntriesNum > 0.5) {
-							return new NodeExecutionOutput(returnData, [
-								{
-									message: `Some duplicates may be not be removed since you're approaching the maximum history size (${maxEntriesNum} items). You can raise this limit using the ‘history size’ option.`,
-									location: 'outputPane',
-								},
-							]);
-						} else return returnData;
+							this.addExecutionHints({
+								message: `Some duplicates may be not be removed since you're approaching the maximum history size (${maxEntriesNum} items). You can raise this limit using the ‘history size’ option.`,
+								location: 'outputPane',
+							});
+						}
+						return returnData;
 					} else if (logic === 'removeItemsUpToStoredIncrementalKey') {
 						if (!['node', 'workflow'].includes(scope)) {
 							throw new NodeOperationError(

packages/nodes-base/nodes/Transform/SplitOut/SplitOut.node.ts

@@ -1,11 +1,6 @@
 import get from 'lodash/get';
 import unset from 'lodash/unset';
-import {
-	NodeOperationError,
-	deepCopy,
-	NodeExecutionOutput,
-	NodeConnectionType,
-} from 'n8n-workflow';
+import { NodeOperationError, deepCopy, NodeConnectionType } from 'n8n-workflow';
 import type {
 	IBinaryData,
 	IDataObject,
@@ -281,7 +276,9 @@ export class SplitOut implements INodeType {
 				}
 			}
 
-			if (hints.length) return new NodeExecutionOutput([returnData], hints);
+			if (hints.length) {
+				this.addExecutionHints(...hints);
+			}
 		}
 
 		return [returnData];

packages/nodes-base/nodes/Transform/Summarize/Summarize.node.ts

@@ -5,7 +5,6 @@ import {
 	type INodeExecutionData,
 	type INodeType,
 	type INodeTypeDescription,
-	NodeExecutionOutput,
 	type NodeExecutionHint,
 	type IDataObject,
 } from 'n8n-workflow';
@@ -345,6 +344,10 @@ export class Summarize implements INodeType {
 			}
 		}
 
+		if (fieldsNotFound.length) {
+			this.addExecutionHints(...fieldsNotFound);
+		}
+
 		if (options.outputFormat === 'singleItem') {
 			const executionData: INodeExecutionData = {
 				json: aggregationResult,
@@ -352,7 +355,7 @@ export class Summarize implements INodeType {
 					item: index,
 				})),
 			};
-			return new NodeExecutionOutput([[executionData]], fieldsNotFound);
+			return [[executionData]];
 		} else {
 			if (!fieldsToSplitBy.length) {
 				const { pairedItems, ...json } = aggregationResult;
@@ -362,7 +365,7 @@ export class Summarize implements INodeType {
 						item: index,
 					})),
 				};
-				return new NodeExecutionOutput([[executionData]], fieldsNotFound);
+				return [[executionData]];
 			}
 			let returnData: IDataObject[] = [];
 			if (nodeVersion > 1) {
@@ -379,7 +382,7 @@ export class Summarize implements INodeType {
 					})),
 				};
 			});
-			return new NodeExecutionOutput([executionData], fieldsNotFound);
+			return [executionData];
 		}
 	}
 }

packages/nodes-base/nodes/Transform/Summarize/test/unitTests/execute.test.ts

@@ -1,7 +1,7 @@
 import type { MockProxy } from 'jest-mock-extended';
 import { mock } from 'jest-mock-extended';
 import type { IExecuteFunctions } from 'n8n-workflow';
-import { NodeExecutionOutput, NodeOperationError } from 'n8n-workflow';
+import { NodeOperationError } from 'n8n-workflow';
 
 import { Summarize } from '../../Summarize.node';
 import type { Aggregations } from '../../utils';
@@ -43,14 +43,11 @@ describe('Test Summarize Node, execute', () => {
 
 		const result = await summarizeNode.execute.call(mockExecuteFunctions);
 
-		expect(result).toBeInstanceOf(NodeExecutionOutput);
 		expect(result).toEqual([[{ json: { sum_nonexistentField: 0 }, pairedItem: [{ item: 0 }] }]]);
-		expect((result as NodeExecutionOutput).getHints()).toEqual([
-			{
-				location: 'outputPane',
-				message: "The field 'nonexistentField' does not exist in any items",
-			},
-		]);
+		expect(mockExecuteFunctions.addExecutionHints).toHaveBeenCalledWith({
+			location: 'outputPane',
+			message: "The field 'nonexistentField' does not exist in any items",
+		});
 	});
 
 	it('should throw error if node version is < 1.1 and fields not found', async () => {