Initial commit to release

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

@@ -0,0 +1,82 @@
+import { IExecuteSingleFunctions } from 'n8n-core';
+import {
+	IBinaryKeyData,
+	IDataObject,
+	INodeExecutionData,
+	INodeType,
+	INodeTypeDescription,
+} from 'n8n-workflow';
+
+const { NodeVM } = require('vm2');
+
+export class FunctionItem implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Function Item',
+		name: 'functionItem',
+		icon: 'fa:code',
+		group: ['transform'],
+		version: 1,
+		description: 'Run custom function code which gets executed once per item.',
+		defaults: {
+			name: 'FunctionItem',
+			color: '#FF9922',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		properties: [
+			{
+				displayName: 'Function',
+				name: 'functionCode',
+				typeOptions: {
+					alwaysOpenEditWindow: true,
+					rows: 10,
+				},
+				type: 'string',
+				default: 'item.myVariable = 1;\nreturn item;',
+				description: 'The JavaScript code to execute for each item.',
+			},
+		],
+	};
+
+	async executeSingle(this: IExecuteSingleFunctions): Promise<INodeExecutionData> {
+		const item = this.getInputData();
+
+		// Define the global objects for the custom function
+		const sandbox = {
+			getBinaryData: (): IBinaryKeyData | undefined => {
+				return item.binary;
+			},
+			getNodeParameter: this.getNodeParameter,
+			helpers: this.helpers,
+			item: item.json,
+			setBinaryData: (data: IBinaryKeyData) => {
+				item.binary = data;
+			},
+		};
+
+		const vm = new NodeVM({
+			console: 'inherit',
+			sandbox,
+			require: {
+				external: false,
+				root: './',
+			}
+		});
+
+		// Get the code to execute
+		const functionCode = this.getNodeParameter('functionCode') as string;
+
+
+		let jsonData: IDataObject;
+		try {
+			// Execute the function code
+			jsonData = await vm.run(`module.exports = async function() {${functionCode}}()`);
+		} catch (e) {
+			return Promise.reject(e);
+		}
+
+		return {
+			json: jsonData
+		};
+	}
+}