const { app, BrowserWindow } = require('electron') let mainWindow = null function createWindow () { const windowOptions = { width: 600, height: 400, title: 'Create a frameless window', webPreferences: { nodeIntegration: true } } mainWindow = new BrowserWindow(windowOptions) mainWindow.loadFile('index.html') mainWindow.on('closed', () => { mainWindow = null }) } app.whenReady().then(() => { createWindow() })