Initial commit to release

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

@@ -0,0 +1,71 @@
+import { IExecuteFunctions } from 'n8n-core';
+import {
+	INodeExecutionData,
+	INodeType,
+	INodeTypeDescription,
+} from 'n8n-workflow';
+
+const { NodeVM } = require('vm2');
+
+export class Function implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Function',
+		name: 'function',
+		icon: 'fa:code',
+		group: ['transform'],
+		version: 1,
+		description: 'Run custom function code which gets executed once per item.',
+		defaults: {
+			name: 'Function',
+			color: '#FF9922',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		properties: [
+			{
+				displayName: 'Function',
+				name: 'functionCode',
+				typeOptions: {
+					alwaysOpenEditWindow: true,
+					rows: 10,
+				},
+				type: 'string',
+				default: 'items[0].json.myVariable = 1;\nreturn items;',
+				description: 'The JavaScript code to execute.',
+			},
+		],
+	};
+
+	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
+		// const item = this.getInputData();
+		let items = this.getInputData();
+
+		// Define the global objects for the custom function
+		const sandbox = {
+			getNodeParameter: this.getNodeParameter,
+			helpers: this.helpers,
+			items,
+		};
+
+		const vm = new NodeVM({
+			console: 'inherit',
+			sandbox,
+			require: {
+				external: false,
+				root: './',
+			}
+		});
+
+		// Get the code to execute
+		const functionCode = this.getNodeParameter('functionCode', 0) as string;
+
+		try {
+			// Execute the function code
+			items = await vm.run(`module.exports = async function() {${functionCode}}()`);
+		} catch (e) {
+			return Promise.reject(e);
+		}
+
+		return this.prepareOutputData(items);
+	}
+}