Electron sample boostrap..js file

bootstrap.js

// console.log('testing')
const{app,BrowserWindow, Menu}  = require('electron')
const ipc = require('electron').ipcMain
// main process
const path = require('path')
const url = require('url')
require('electron-reload')(__dirname)

let win 

ipc.on('reply', (event,message) => {
    console.log(event,message)
    win.webContents.send('Message from bootstrap.js', 'Message from window 2: ${message}')
})

function createWindow() {
    win = new BrowserWindow({width:800,height:600})
    win.loadURL(url.format({
        pathname:path.join(__dirname, 'src/main.html'),
        protocol: 'file',
        slashes:true
    }))

    win.on('closed',() => { 
        win = null 
    })

    win.openDevTools()
    var menu = Menu.buildFromTemplate([
    {
        label:'Electron',submenu:[
            {label:'Preferences'},
            {type:'separator'},
            {label:'log',click() { console.log('log item clicked')} }


        ]
    }
    ])
    Menu.setApplicationMenu(menu)
}

app.on('ready', createWindow)

app.on('wondow-all-closed', ()=>{
    app.quit()
   /* if(process.platform !== 'darwin') {
        app.quit()
    } */
})

app.on('activate', () => {
    if (win == null){
        createWindow()
    }
})