const { app, BrowserWindow } = require('electron'); let mainWindow; function createWindow () { mainWindow = new BrowserWindow({ width: 800, height: 600, webPreferences: { nodeIntegration: true, } }); mainWindow.loadFile('index.html'); mainWindow.on('closed', function () { mainWindow = null; }); } app.on('ready', createWindow); app.on('window-all-closed', function () { if (process.platform !== 'darwin') { app.quit(); } }); app.on('activate', function () { if (mainWindow === null) { createWindow(); } });