docs/integrations/creating-nodes/build/reference/node-base-files/structure.md

metadata

title: Structure of the node base file
description: A reference document detailing the basic structure of the node base file.
contentType: reference

Structure of the node base file

The node base file follows this basic structure:

1. Add import statements.
2. Create a class for the node.
3. Within the node class, create a description object, which defines the node.

A programmatic-style node also has an execute() method, which reads incoming data and parameters, then builds a request. The declarative style handles this using the routing key in the properties object, within descriptions.

Outline structure for a declarative-style node

This code snippet gives an outline of the node structure.

import { INodeType, INodeTypeDescription } from 'n8n-workflow';

export class ExampleNode implements INodeType {
    description: INodeTypeDescription = {
        // Basic node details here
        properties: [
            // Resources and operations here
        ]
    };
}

Refer to Standard parameters for information on parameters available to all node types. Refer to Declarative-style parameters for the parameters available for declarative-style nodes.

Outline structure for a programmatic-style node

This code snippet gives an outline of the node structure.

import { IExecuteFunctions } from 'n8n-core';
import { INodeExecutionData, INodeType, INodeTypeDescription } from 'n8n-workflow';

export class ExampleNode implements INodeType {
    description: INodeTypeDescription = {
    // Basic node details here
    properties: [
      // Resources and operations here
    ]
  };

  async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
    // Process data and return
  }
};

Refer to Standard parameters for information on parameters available to all node types. Refer to Programmatic-style parameters and Programmatic-style execute method for more information on working with programmatic-style nodes.