updater.js

const {app, autoUpdater, dialog} = require('electron');
const ms = require('ms');

const platform = process.platform === 'darwin' ? 'osx' : process.platform;
const version = app.getVersion();
const feedUrl = `https://my-updates-here.herokuapp.com/update/${platform}`;

export default class AutoUpdater {

  constructor(mainWindow) {
    var self = this;

    this.mainWindow = mainWindow;
    this.nutsUrl = `${FEED_URL}/${version}`;

    autoUpdater.on('update-available', () => {
      console.log('[Updater] Update available');
    });

    autoUpdater.on('update-downloaded', (e, releaseNotes, releaseName) => {
      console.log('[Updater] Update downloaded');
      console.log(releaseNotes);
      
      // create dialog here
    });

    setTimeout(() => {
      autoUpdater.setFeedURL(self.nutsUrls)
      self.checkForUpdates();
    }, ms('10s'));
  };

  startCheckTimer() {
    var self = this;

    setInterval(() => {
      self.checkForUpdates();
    }, ms('30m'));
  };

  checkForUpdates() {
    try {
      autoUpdater.checkForUpdates()
    } catch (ex) {
      console.warn(`[Updater] Failure checking for updates: ${ex.message}`)
    }
  };
};