main.js

const electron = require('electron')
const app = electron.app
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow
const {dialog} = require('electron')
const path = require('path')
const url = require('url')
const fs = require('fs')

const {Menu} = require("electron")

require('electron-debug')({showDevTools: true})
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow
//global.userData = app.getPath('userData')
//global.userData = app.getPath('home')
global.userData = app.getPath('documents')
console.log("userData:  ", userData)

function createWindow() {
    app.server = require(__dirname + '/eapp/app')();

    // Create the browser window.
    mainWindow = new BrowserWindow({
        width: 1200,
        height: 800,
        webPreferences: {
            nodeIntegration: false

        }
    })
    //mainWindow = new BrowserWindow({width: 1200, height: 800,titleBarStyle: 'hidden'})
    //mainWindow = new BrowserWindow({width: 1200, height: 800,frame: false})


    // and load the index.html of the app.
    /*mainWindow.loadURL(url.format({
      pathname: path.join(__dirname, 'index.html'),
      protocol: 'file:',
      slashes: true
    }))*/

    mainWindow.loadURL('http://127.0.0.1:3000')
    mainWindow.webContents.on('new-window', function (e, url) {
        e.preventDefault();
        electron.shell.openExternal(url);
    });
    // Open the DevTools.
    //mainWindow.webContents.openDevTools()

    // Emitted when the window is closed.
    mainWindow.on('closed', function () {
        // Dereference the window object, usually you would store windows
        // in an array if your app supports multi windows, this is the time
        // when you should delete the corresponding element.
        mainWindow = null
    })
    var template = [{
        label: "Application",
        submenu: [
            {label: "About Application", selector: "orderFrontStandardAboutPanel:"},
            {type: "separator"},
            {
                label: "Quit", accelerator: "Command+Q", click: function () {
                    app.quit();
                }
            }
        ]
    }, {
        label: "Edit",
        submenu: [
            {label: "Undo", accelerator: "CmdOrCtrl+Z", selector: "undo:"},
            {label: "Redo", accelerator: "Shift+CmdOrCtrl+Z", selector: "redo:"},
            {type: "separator"},
            {label: "Cut", accelerator: "CmdOrCtrl+X", selector: "cut:"},
            {label: "Copy", accelerator: "CmdOrCtrl+C", selector: "copy:"},
            {label: "Paste", accelerator: "CmdOrCtrl+V", selector: "paste:"},
            {label: "Select All", accelerator: "CmdOrCtrl+A", selector: "selectAll:"}

        ]
    }
    ];

    Menu.setApplicationMenu(Menu.buildFromTemplate(template));
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', function () {
    // On OS X it is common for applications and their menu bar
    // to stay active until the user quits explicitly with Cmd + Q
    if (process.platform !== 'darwin') {
        app.quit()
    }
})

app.on('activate', function () {
    // On OS X it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (mainWindow === null) {
        createWindow()
    }
})