'use strict'; const electron = require('electron'); const app = electron.app; const BrowserWindow = electron.BrowserWindow; let mainWindow; function createWindow () { mainWindow = new BrowserWindow({width: 1240, height: 640, autoHideMenuBar: true, useContentSize: true}); mainWindow.loadURL('file://' + __dirname + '/index.html'); mainWindow.on('closed', function() { mainWindow = null; }); } app.on('ready', createWindow); app.on('window-all-closed', function () { app.quit(); }); app.on('activate', function () { if (mainWindow === null) { createWindow(); } });