refactor(core): Move copyInputItems to node helpers (no-changelog) (#7299)

packages/core/src/NodeExecuteFunctions.ts

@@ -2709,6 +2709,24 @@ const getBinaryHelperFunctions = (
 	},
 });
 
+/**
+ * Returns a copy of the items which only contains the json data and
+ * of that only the defined properties
+ */
+export function copyInputItems(items: INodeExecutionData[], properties: string[]): IDataObject[] {
+	return items.map((item) => {
+		const newItem: IDataObject = {};
+		for (const property of properties) {
+			if (item.json[property] === undefined) {
+				newItem[property] = null;
+			} else {
+				newItem[property] = deepCopy(item.json[property]);
+			}
+		}
+		return newItem;
+	});
+}
+
 /**
  * Returns the execute functions the poll nodes have access to.
  */
@@ -3239,6 +3257,7 @@ export function getExecuteFunctions(
 			},
 			helpers: {
 				createDeferredPromise,
+				copyInputItems,
 				...getRequestHelperFunctions(workflow, node, additionalData),
 				...getFileSystemHelperFunctions(node),
 				...getBinaryHelperFunctions(additionalData, workflow.id),