Feature/paired item support (#3869)

* Add paired item helper and implement it in some nodes

packages/nodes-base/nodes/Salesforce/Salesforce.node.ts

@@ -1062,7 +1062,7 @@ export class Salesforce implements INodeType {
 
 	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
 		const items = this.getInputData();
-		const returnData: IDataObject[] = [];
+		const returnData: INodeExecutionData[] = [];
 		let responseData;
 		const qs: IDataObject = {};
 		const resource = this.getNodeParameter('resource', 0) as string;
@@ -3073,27 +3073,34 @@ export class Salesforce implements INodeType {
 						);
 					}
 				}
-				if (Array.isArray(responseData)) {
-					returnData.push.apply(returnData, responseData as IDataObject[]);
-				} else {
-					if (responseData === undefined) {
-						// Make sure that always valid JSON gets returned which also matches the
-						// Salesforce default response
-						responseData = {
-							errors: [],
-							success: true,
-						};
-					}
-					returnData.push(responseData as IDataObject);
+
+				if (!Array.isArray(responseData) && responseData === undefined) {
+					// Make sure that always valid JSON gets returned which also matches the
+					// Salesforce default response
+					responseData = {
+						errors: [],
+						success: true,
+					};
 				}
+
+				const executionData = this.helpers.constructExecutionMetaData(
+					this.helpers.returnJsonArray(responseData),
+					{ itemData: { item: i } },
+				);
+
+				returnData.push(...executionData);
 			} catch (error) {
 				if (this.continueOnFail()) {
-					returnData.push({ error: error.message });
+					const executionErrorData = this.helpers.constructExecutionMetaData(
+						this.helpers.returnJsonArray({ error: error.message }),
+						{ itemData: { item: i } },
+					);
+					returnData.push(...executionErrorData);
 					continue;
 				}
 				throw error;
 			}
 		}
-		return [this.helpers.returnJsonArray(returnData)];
+		return this.prepareOutputData(returnData);
 	}
 }