main.js

const electron = require('electron')
const {app, BrowserWindow, menu} = electron

const path = require('path')
const url = require('url')

let win

function createWindow() {
    win = new BrowserWindow({
        width:800,
        height:600,
        resizable: false,
        icon: __dirname+'app/assets/images/favicon.ico'
    });

//  win.setMenu(null);

    win.loadURL(
        url.format({
            pathname: path.join(__dirname,'app/index.html'),
            protocol: 'file',
            slashes: true
        })
    );
}

app.on('ready', createWindow)