reactor/advanced-reactor.js

const nameOfNode = "advanced-reactor"; // name of the node, should match file name and node type in Node-RED
const nodeClass = require('./src/nodeClass.js'); // node class

module.exports = function (RED) {
    // Register the node type
    RED.nodes.registerType(nameOfNode, function (config) {
        // Initialize the Node-RED node first
        RED.nodes.createNode(this, config);
        // Then create your custom class and attach it
        this.nodeClass = new nodeClass(config, RED, this, nameOfNode);
    });
};