code to reboot a Ikea Tradfri gateway

rebootGW.js

const trad = require('node-tradfri-client');
const TradfriClient = trad.TradfriClient;

const psk = "the psk stored in the QR code on bottom of GW";
const ip = "IP address of GW"; // you find this with avahi

const client = new TradfriClient(ip);
//console.log(client);

client.authenticate(psk).then( (creds) => {
  console.log(creds);
  client.connect(creds.identity, creds.psk);
  // client.observeNotifications()
  client.rebootGateway().then((res) => {
    if (res) {
  		console.log("rebooting");
  	} else {
  		console.log("problem");
  	}
  });
});