index.js

// Create the app frontend.
const electron = require('electron')
const app = electron.app
const BrowserWindow = electron.BrowserWindow

const path = require('path')
const url = require('url')

let mainWindow

function createWindow () {
  mainWindow = new BrowserWindow({width: 680, height: 500, minWidth:650, minHeight:500, frame: false, show: false, webPreferences: {webSecurity: false}})
  // Load default page, index.html
  mainWindow.loadURL(url.format({
    pathname: path.join(__dirname, 'index.html'),
    protocol: 'file:',
    slashes: true
  }))
  // On DOM Ready, show the window, its better ;)
  mainWindow.webContents.on('dom-ready', () => {
    mainWindow.show();
  })

  mainWindow.on('closed', function () {
    mainWindow = null
  })
}

app.on('ready', createWindow)


// Stupid things for iDummies operational system.
app.on('window-all-closed', function () {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', function () {
  if (mainWindow === null) {
    createWindow()
  }
})