Load url into electron without caching

no-cache-electron.js

import { app, BrowserWindow, Menu, shell } from 'electron';
import Server from './server/server.js';

let menu;
let template;
let mainWindow = null;

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

app.on('ready', () => {
  Server.init();
  mainWindow = new BrowserWindow({ show: false, width: 1024, height: 728 });
  Server.on('server.loaded', port => {
    mainWindow.loadURL(`http://localhost:${port}`, { extraHeaders: 'pragma: no-cache\n' });
    mainWindow.webContents.send('loaded.server', port);
  });
  mainWindow.webContents.on('did-finish-load', () => {
    mainWindow.show();
    mainWindow.focus();
    mainWindow.webContents.send('app.started');
  });

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